Hillsboro, Oregon Weather Conditions

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Current Conditions

  • 56°
  • Light Rain
  • Wind: SE 8 mph
  • Humidity: 97%
  • Visibility: 2.0 miles
  • Dew Point: 55°
  • Pressure: 29.70 in. -

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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Rain
  • High: 61 °
  • Low: 54 °
  • Rain
  • Thursday
  • Rain Showers
  • High: 61 °
  • Low: 50 °
  • Rain Showers
  • Friday
  • Rain
  • High: 63 °
  • Low: 50 °
  • Rain
  • Saturday
  • Chance of Rain
  • High: 63 °
  • Low: 46 °
  • Chance of Rain
  • Sunday
  • Chance of Rain
  • High: 57 °
  • Low: 46 °
  • Chance of Rain

Forecast for Hillsboro, Oregon

Updated: 2:00 PM PDT on October 22, 2014

  • Wednesday

    Overcast with rain. High of 61F. Breezy. Winds from the South at 10 to 20 mph. Chance of rain 100% with rainfall amounts near 0.6 in. possible.

  • Wednesday Night

    Overcast with rain, then rain showers after midnight. Fog overnight. Low of 54F. Winds from the South at 5 to 15 mph. Chance of rain 100% with rainfall amounts near 1.0 in. possible.

  • Thursday

    Overcast with rain showers. High of 61F. Winds from the SSW at 10 to 15 mph. Chance of rain 90% with rainfall amounts near 0.2 in. possible.

  • Thursday Night

    Overcast with rain showers, then a chance of rain after midnight. Fog overnight. Low of 50F. Winds from the SE at 5 to 10 mph. Chance of rain 70%.

  • Friday

    Overcast with rain. High of 63F. Winds less than 5 mph. Chance of rain 70%.

  • Friday Night

    Overcast with a chance of rain. Low of 50F. Winds less than 5 mph. Chance of rain 30%.

  • Saturday

    Overcast with a chance of rain. High of 63F. Winds from the East at 5 to 20 mph shifting to the SSE in the afternoon. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Saturday Night

    Overcast with a chance of rain in the evening, then partly cloudy with a chance of rain. Fog overnight. Low of 46F. Winds from the SSW at 5 to 20 mph. Chance of rain 60% with rainfall amounts near 0.3 in. possible.

  • Sunday

    Partly cloudy with a chance of rain in the morning, then overcast with a chance of rain. High of 57F. Winds from the SSW at 5 to 10 mph. Chance of rain 60%.

  • Sunday Night

    Mostly cloudy with a chance of rain. Fog overnight. Low of 46F. Winds from the South at 5 to 10 mph. Chance of rain 50% with rainfall amounts near 0.2 in. possible.

  • Monday

    Overcast with a chance of rain. High of 54F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.2 in. possible.

  • Monday Night

    Mostly cloudy with a chance of rain. Low of 48F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.7 in. possible.

  • Tuesday

    Overcast with a chance of rain. High of 55F. Winds from the ENE at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.8 in. possible.

  • Tuesday Night

    Partly cloudy with a chance of rain. Fog overnight. Low of 45F. Winds from the South at 5 to 10 mph. Chance of rain 50% with rainfall amounts near 0.4 in. possible.

  • Wednesday

    Clear with a chance of rain. High of 61F. Winds from the SE at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.2 in. possible.

  • Wednesday Night

    Overcast with a chance of rain. Fog overnight. Low of 43F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday

    Clear with a chance of a thunderstorm. Fog early. High of 57F. Winds less than 5 mph. Chance of rain 60% with rainfall amounts near 0.4 in. possible.

  • Thursday Night

    Clear with a chance of rain. Fog overnight. Low of 39F. Winds less than 5 mph. Chance of rain 40%.

  • Friday

    Overcast with a chance of a thunderstorm. Fog early. High of 55F. Winds less than 5 mph. Chance of rain 40%.

  • Friday Night

    Mostly cloudy with a chance of rain. Fog overnight. Low of 39F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday

    Mostly cloudy with a chance of a thunderstorm. High of 54F. Winds less than 5 mph. Chance of rain 50% with rainfall amounts near 0.2 in. possible.

  • Saturday Night

    Mostly cloudy with a chance of a thunderstorm. Fog overnight. Low of 41F. Winds less than 5 mph. Chance of rain 50%.

  • Sunday

    Clear. High of 54F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Special Statement  Statement as of 3:11 PM PDT on October 22, 2014


... Wet and windy through the weekend for southwest Washington and
northwest Oregon...

A moist and slow-moving frontal system is bringing widespread
heavy rain to southwest Washington and northwest Oregon today. The
band of heaviest rain will slowly shift southeast through this
evening... before becoming confined to the Lane County Cascades
overnight. Expect numerous Post-frontal showers to continue
across the region through Thursday.

Storm total rainfall totals upwards of 1.5 to 2.5 inches are
expected in the inland valleys by Thursday afternoon. Coastal
locations are expected to receive 2 to 4 inches of rain... and 3 to
6 inches of rain are forecast for most of the Coast Range and
Cascades.

Minor urban flooding is possible due to Autumn Leaves clogging
storm drains. Additionally... there is a possibility of minor
flooding on a couple of fast responding small streams and rivers
due to the heavy rain. Burn scar areas from recent wildfires in
the Cascades may also be subject to debris flows or mudslides. All
of this will be monitored closely over the coming days.

After a lull on Thursday night and early Friday... another strong
system may affect part of the area later Friday into this
weekend. Details on this system are still uncertain... but it
appears southwest Washington and northwest Oregon are in for
another period of wet and windy weather.


545 am PDT Wed Oct 22 2014

... Wet and windy week ahead for southwest Washington and northwest
Oregon...

A strong and wet Pacific storm system will bring periods of heavy
rain to southwest Washington and northwest Oregon through Thursday
morning. Strong winds have developed along the coastal headlands
and higher terrain of the Coast Range and will continue throughout
the morning.

Gusty south winds are also developing in the inland valleys. Local
gusts of up to 40 mph have already occurred and will continue
through the morning. Many trees still have a fair amount of
leaves on them... which could cause more limbs to break than is
often the case with such winds. As a result... some minor power
outages are possible with the gusty winds.

The frontal system has tapped into sub-tropical moisture which
will enhance rainfall near the front as it slowly moves through
the area today through early Thursday. Rain will be heavy at
times... not just along the coast and in the higher terrain... but
for the inland valleys as well.

Storm total rainfall totals upwards of 2 inches are expected in
the inland valleys by Thursday afternoon. Coastal locations are
expected to receive 2 to 4 inches of rain... and 3 to 6 inches of
rain are forecast for most of the Coast Range and Cascades. One to
two inches of this rain have already fallen across much of
southwest Washington.

Minor urban flooding is possible due to Autumn Leaves clogging
storm drains. Additionally... there is a possibility of minor
flooding on a couple of fast responding small streams and rivers
due to the heavy rain. Burn scar areas from recent wildfires in
the Cascades may also be subject to debris flows or mudslides. All
of this will be monitored closely over the coming days.

After a lull on Thursday... another strong system may affect part
of the area Friday into this weekend. Details on this system are
still quite uncertain... but it appears southwest Washington and
northwest Oregon are in for a fairly extended period of wet and
unsettled Fall weather.


Weagle

235 PM PDT Tue Oct 21 2014

... Wet and windy week ahead for southwest Washington and northwest
Oregon...

A strong and wet Pacific storm system will bring periods of heavy
rain to southwest Washington and northwest Oregon tonight through
Thursday morning. Strong winds are also expected along the coastal
headlands and higher terrain of the Coast Range tonight into
Wednesday morning.

South winds are increasing along the coast this afternoon as the
front approaches the Pacific northwest coastal waters. Winds will
be especially strong along the beaches and headlands... where gusts
of 60 to 70 mph are expected at times tonight through early
Wednesday. Coastal communities may see gusts upwards of 50 mph as
the front slowly sags down the coast later tonight into Wednesday
morning.

South winds will also increase later tonight into Wednesday for
the inland valleys and main Metro areas... where gusts of 25 to 35
mph are possible. Many trees still have a fair amount of leaves
on them... which could cause more limbs to break than is often the
case with such winds. As a result... some minor power outages are
possible as the gusty winds develop.

The frontal system has tapped into sub-tropical moisture which
will enhance rainfall near the front as it slowly moves through
the area tonight through early Thursday. Rain will be heavy at
times along the coast and in the higher terrain... and possibly in
the inland valleys as well.

Rainfall totals of 1 to 2 inches are expected in the inland
valleys by Thursday afternoon. Coastal locations are expected to
receive 2 to 4 inches of rain... and 3 to 6 inches of rain are
forecast for most of the Coast Range and Cascades.

Minor urban flooding is possible due to Autumn Leaves clogging
storm drains... especially Wednesday into Wednesday night when the
heaviest rain is expected. Additionally... there is a possibility
of minor flooding on a couple of fast responding small streams
and rivers due to the heavy rain. Burn scar areas from recent
wildfires in the Cascades may also be subject to debris flows or
mudslides. All of this will be monitored closely over the coming
days.

After a lull on Thursday... another strong system may affect part
of the area Friday into this weekend. Details on this system are
still quite uncertain... but it appears southwest Washington and
northwest Oregon is in for a fairly extended period of wet and
unsettled Fall weather.




 Public Information Statement  Statement as of 10:17 am PDT on October 22, 2014



... Latest rainfall reports...

Location amount time/date lat/Lon

... Oregon...

... Benton...
Wilkinson Ridge (1346 ft) 1.26 in 0957 am 10/22 44.33n/123.72w
Summit (746 ft) 0.60 in 0930 am 10/22 44.63n/123.58w

... Clackamas...
blazed Alder (3650 ft) 1.40 in 0900 am 10/22 45.43n/121.86w
South Fork Bull Run (2630 ft) 1.30 in 0900 am 10/22 45.45n/122.03w
Horse Creek (3402 ft) 0.88 in 0927 am 10/22 44.95n/122.40w
2 NE Cherryville (1250 ft) 0.71 in 0954 am 10/22 45.39n/122.11w
Peavine Ridge (3500 ft) 0.60 in 0900 am 10/22 45.04n/121.93w
Zigzag (1379 ft) 0.50 in 0800 am 10/22 45.35n/121.95w
2 E Brightwood (1336 ft) 0.50 in 1006 am 10/22 45.36n/121.98w

... Clatsop...
Tidewater (2035 ft) 2.17 in 0914 am 10/22 46.01n/123.56w
1 WNW Jewell (569 ft) 1.40 in 1000 am 10/22 45.94n/123.53w
W f Satsop river (300 ft) 1.20 in 0930 am 10/22 46.18n/123.56w
Cannon Beach (22 ft) 0.99 in 0951 am 10/22 45.89n/123.96w
Knappa (104 ft) 0.96 in 0953 am 10/22 46.17n/123.58w

... Columbia...
Miller (1030 ft) 0.77 in 0912 am 10/22 46.02n/123.27w
Nehalem river nr Vernonia 0.65 in 0915 am 10/22 45.81n/123.28w

... Hood River...
Red Hill (4400 ft) 1.10 in 0900 am 10/22 45.46n/121.70w
Cascade Locks (142 ft) 0.84 in 0830 am 10/22 45.68n/121.87w
Greenpoint (3200 ft) 0.70 in 0900 am 10/22 45.62n/121.70w

... Lane...
1 se Heceta Beach (98 ft) 1.44 in 0951 am 10/22 44.02n/124.12w
1 se Florence (45 ft) 1.06 in 1002 am 10/22 43.98n/124.09w
2 NNW Mapleton (41 ft) 1.00 in 0930 am 10/22 44.06n/123.88w
dunes (120 ft) 0.96 in 0904 am 10/22 43.96n/124.12w
5 ENE Heceta Beach (236 ft) 0.89 in 0800 am 10/22 44.06n/124.05w
McKenzie (4800 ft) 0.70 in 0900 am 10/22 44.21n/121.87w
1 NW Florence (68 ft) 0.67 in 0700 am 10/22 44.00n/124.11w
Village Creek (1565 ft) 0.63 in 0953 am 10/22 44.25n/123.47w
Salt Creek Falls (4000 ft) 0.60 in 0900 am 10/22 43.61n/122.12w
Holland Meadows (4900 ft) 0.50 in 0900 am 10/22 43.67n/122.57w

... Lincoln...
Cannibal Mountain (1939 ft) 1.58 in 0903 am 10/22 44.35n/123.89w
1 NW Yachats (32 ft) 1.37 in 1004 am 10/22 44.32n/124.11w
Waldport (164 ft) 0.97 in 0956 am 10/22 44.42n/124.07w
Newport (127 ft) 0.86 in 1004 am 10/22 44.64n/124.06w
1 NNE Lincoln Beach (72 ft) 0.83 in 0953 am 10/22 44.87n/124.04w
1 S Otter Rock (141 ft) 0.79 in 1000 am 10/22 44.72n/124.06w
Waldport (60 ft) 0.77 in 1003 am 10/22 44.42n/124.07w

... Linn...
Hogg pass (4760 ft) 1.00 in 0900 am 10/22 44.42n/121.86w
Daly Lake (3600 ft) 1.00 in 0900 am 10/22 44.52n/122.09w
Little Meadows (4000 ft) 0.90 in 0900 am 10/22 44.61n/122.23w
Marion Forks (2600 ft) 0.80 in 0800 am 10/22 44.59n/121.97w
Yellowstone mtn (3080 ft) 0.80 in 0917 am 10/22 44.59n/122.43w
Marion Forks Fish Hatchery 0.69 in 0730 am 10/22 44.61n/121.95w
Santiam Junction (3750 ft) 0.50 in 0900 am 10/22 44.44n/121.95w
Jump Off Joe (3500 ft) 0.50 in 0900 am 10/22 44.39n/122.17w

... Marion...
1 S Salem (319 ft) 0.57 in 1005 am 10/22 44.90n/123.03w

... Multnomah...
North Fork (3120 ft) 1.90 in 0900 am 10/22 45.55n/122.00w
log creek (2800 ft) 1.31 in 0906 am 10/22 45.50n/121.90w
Corbett (659 ft) 0.52 in 1000 am 10/22 45.53n/122.29w

... Polk...
Falls City (419 ft) 1.60 in 0930 am 10/22 44.88n/123.46w
Rockhouse 1 (1797 ft) 1.25 in 0912 am 10/22 44.92n/123.47w
grande ronde (395 ft) 1.00 in 0930 am 10/22 45.05n/123.62w
4 SSW Dallas (459 ft) 0.92 in 1002 am 10/22 44.86n/123.34w
1 NW Dallas (413 ft) 0.79 in 1005 am 10/22 44.93n/123.33w
1 ESE Dallas (282 ft) 0.54 in 1005 am 10/22 44.92n/123.30w

... Tillamook...
Nehalem river nr Foss (40 ft) 2.01 in 1000 am 10/22 45.70n/123.75w
Rye Mountain (2000 ft) 1.85 in 0914 am 10/22 45.22n/123.53w
South Fork (2256 ft) 1.63 in 0912 am 10/22 45.60n/123.48w
Lees Camp (654 ft) 1.50 in 1000 am 10/22 45.59n/123.52w
Tillamook 8 ENE (71 ft) 0.88 in 0930 am 10/22 45.48n/123.72w
Tillamook 1w (10 ft) 0.85 in 0800 am 10/22 45.46n/123.87w
1 NW Manzanita (154 ft) 0.73 in 0800 am 10/22 45.72n/123.94w
Tillamook (11 ft) 0.72 in 0912 am 10/22 45.46n/123.80w
Wilson r at Tillamook (10 ft) 0.66 in 1000 am 10/22 45.48n/123.81w
2 E Oceanside (1420 ft) 0.60 in 1005 am 10/22 45.47n/123.92w

... Washington...
Saddle Mountain (3250 ft) 1.70 in 0900 am 10/22 45.54n/123.37w
seine creek (2000 ft) 1.10 in 0900 am 10/22 45.53n/123.30w
scoggins crk blo Henry hagg la 0.63 in 1000 am 10/22 45.47n/123.20w

... Yamhill...
6 SW Pike (755 ft) 1.50 in 0930 am 10/22 45.31n/123.35w
4 E Hebo (3160 ft) 1.16 in 1002 am 10/22 45.21n/123.75w
Miller Woods (450 ft) 1.00 in 0900 am 10/22 45.24n/123.26w
4 ESE Hebo (2220 ft) 0.83 in 0910 am 10/22 45.21n/123.77w
5 NW Sheridan (293 ft) 0.61 in 0700 am 10/22 45.16n/123.46w
3 WNW grande ronde (122 ft) 0.51 in 0700 am 10/22 45.09n/123.67w

... Washington...

... Clark...
Canyon creek (2500 ft) 0.68 in 0952 am 10/22 45.92n/122.30w
Larch Mountain (1149 ft) 0.59 in 0909 am 10/22 45.72n/122.35w

... Cowlitz...
Sheep Canyon (4030 ft) 2.00 in 0900 am 10/22 46.19n/122.25w
Abernathy mtn (2000 ft) 1.63 in 0901 am 10/22 46.35n/123.10w
Cougar (540 ft) 1.58 in 1002 am 10/22 46.06n/122.29w
1 WSW Yale (462 ft) 0.94 in 1000 am 10/22 46.00n/122.40w
Kalama Falls hatchery (310 ft) 0.70 in 0800 am 10/22 46.02n/122.73w
8 ESE Toutle (2386 ft) 0.67 in 1000 am 10/22 46.29n/122.55w
Castle Rock (212 ft) 0.62 in 0909 am 10/22 46.27n/122.89w
Elk Rock (2500 ft) 0.61 in 0901 am 10/22 46.31n/122.39w

... Pacific...
Huckleberry Ridge (2424 ft) 2.84 in 0911 am 10/22 46.50n/123.38w
Rock Creek (1445 ft) 2.23 in 0930 am 10/22 46.53n/123.40w
1 ENE Long Beach (6 ft) 1.70 in 1006 am 10/22 46.36n/124.03w
Brooklyn (1036 ft) 1.64 in 0930 am 10/22 46.73n/123.55w
Frances (231 ft) 1.40 in 0930 am 10/22 46.54n/123.50w
Long Beach 1.01 in 0958 am 10/22 46.35n/124.05w
1 N Klipsan Beach (36 ft) 0.83 in 1003 am 10/22 46.48n/124.05w

... Skamania...
Cougar 6 E (659 ft) 1.45 in 0900 am 10/22 46.06n/122.20w
Dry Creek (2700 ft) 1.35 in 0925 am 10/22 45.94n/121.99w
Carson Fish Hatchery (1134 ft) 1.13 in 0730 am 10/22 45.87n/121.97w
calamity (2500 ft) 1.00 in 0900 am 10/22 45.90n/122.22w
2 WSW Spirit Lake (3120 ft) 1.00 in 0900 am 10/22 46.26n/122.18w
6 NW North Bonneville 0.94 in 0900 am 10/22 45.72n/122.04w
Surprise Lakes (4250 ft) 0.70 in 0900 am 10/22 46.09n/121.76w
pepper creek (2139 ft) 0.70 in 0900 am 10/22 46.10n/121.96w
Buck Creek (2690 ft) 0.68 in 0925 am 10/22 46.06n/121.54w
Orr creek (3000 ft) 0.62 in 0909 am 10/22 46.36n/121.60w

Observations are collected from a variety of sources with varying
equipment and exposure. Not all data listed are considered official.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: CWS - Orion, Hillsboro, OR

Updated: 3:15 PM PDT

Temperature: 55.7 °F Dew Point: 53 °F Humidity: 92% Wind: ESE at 2.3 mph Pressure: 29.67 in Hourly Precipitation: 0.15 in Graphs

Location: Jackson School, Hillsboro, OR

Updated: 3:15 PM PDT

Temperature: 56.1 °F Dew Point: 54 °F Humidity: 93% Wind: Calm Pressure: 29.67 in Hourly Precipitation: 0.08 in Graphs

Location: Connell Avenue, Hillsboro, OR

Updated: 3:19 PM PDT

Temperature: 56.3 °F Dew Point: 53 °F Humidity: 89% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.13 in Graphs

Location: Intel Ronler Acres, Hillsboro, OR, Hillsboro, OR

Updated: 3:14 PM PDT

Temperature: 55.9 °F Dew Point: 54 °F Humidity: 94% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.12 in Graphs

Location: Edwards Meadows, Hillsboro, OR

Updated: 3:06 PM PDT

Temperature: 55.6 °F Dew Point: 54 °F Humidity: 93% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.20 in Graphs

Location: Lely Park, Hillsboro, OR

Updated: 3:17 PM PDT

Temperature: 56.0 °F Dew Point: 46 °F Humidity: 68% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.19 in Graphs

Location: Near Century High School, Hillsboro, OR

Updated: 3:15 PM PDT

Temperature: 56.7 °F Dew Point: 55 °F Humidity: 94% Wind: Calm Pressure: 31.01 in Hourly Precipitation: 0.27 in Graphs

Location: Baseline / Cornelius Pass, Aloha, OR

Updated: 3:19 PM PDT

Temperature: 55.9 °F Dew Point: 54 °F Humidity: 95% Wind: Calm Pressure: 29.73 in Hourly Precipitation: 0.24 in Graphs

Location: South Hillsboro - Tualatin River, Hillsboro, OR

Updated: 3:19 PM PDT

Temperature: 55.9 °F Dew Point: 55 °F Humidity: 96% Wind: East at 1.0 mph Pressure: 29.70 in Hourly Precipitation: 0.16 in Graphs

Location: Rock Creek, Portland, OR

Updated: 3:20 PM PDT

Temperature: 57.2 °F Dew Point: 55 °F Humidity: 92% Wind: Calm Pressure: 29.60 in Hourly Precipitation: 0.16 in Graphs

Location: Seminole Estates, Beaverton, OR

Updated: 3:20 PM PDT

Temperature: 55.8 °F Dew Point: 52 °F Humidity: 88% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.21 in Graphs

Location: Longacre Park, Beaverton, OR

Updated: 3:20 PM PDT

Temperature: 55.2 °F Dew Point: 55 °F Humidity: 98% Wind: Calm Pressure: 29.71 in Hourly Precipitation: 0.25 in Graphs

Location: Whispering Woods Area, Beaverton, OR

Updated: 3:19 PM PDT

Temperature: 55.0 °F Dew Point: 54 °F Humidity: 98% Wind: ESE at 2.7 mph Pressure: 29.57 in Hourly Precipitation: - Graphs

Location: Intel Aloha Campus, Aloha, OR, Beaverton, OR

Updated: 3:14 PM PDT

Temperature: 55.0 °F Dew Point: 54 °F Humidity: 96% Wind: ESE at 7.0 mph Pressure: 29.55 in Hourly Precipitation: 0.25 in Graphs

Location: Cornelius, CORNELIUS, OR

Updated: 3:15 PM PDT

Temperature: 56.1 °F Dew Point: 55 °F Humidity: 97% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.15 in Graphs

Location: 209th / Parker Court, Aloha, OR

Updated: 3:20 PM PDT

Temperature: 54.7 °F Dew Point: -1 °F Humidity: - Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Graphs

Location: Somerset Meadows Park, Beaverton, OR

Updated: 3:19 PM PDT

Temperature: 55.0 °F Dew Point: 54 °F Humidity: 96% Wind: Calm Pressure: 29.67 in Hourly Precipitation: 0.23 in Graphs

Location: Farm near Meriwether Golf Course, Hillsboro, OR

Updated: 11:34 AM PDT

Temperature: 56.2 °F Dew Point: 54 °F Humidity: 92% Wind: South at 6.0 mph Pressure: 29.75 in Hourly Precipitation: 0.09 in Graphs

Location: at Harleman Park, Cornelius, OR

Updated: 3:17 PM PDT

Temperature: 56.5 °F Dew Point: 54 °F Humidity: 90% Wind: Calm Pressure: 29.70 in Hourly Precipitation: 0.08 in Graphs

Location: Helvetia, Hillsboro, OR

Updated: 3:20 PM PDT

Temperature: 56.5 °F Dew Point: 55 °F Humidity: 94% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.11 in Graphs

Location: Panorama Point (Washington Cty), Cornelius, OR

Updated: 3:20 PM PDT

Temperature: 54.6 °F Dew Point: 55 °F Humidity: 100% Wind: Calm Pressure: 29.67 in Hourly Precipitation: 0.21 in Graphs

Location: 209th & Farmington Aloha, OR

Updated: 3:04 PM PDT

Temperature: 55.6 °F Dew Point: 55 °F Humidity: 97% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.35 in Graphs

Location: Aloha, OR

Updated: 3:20 PM PDT

Temperature: 55.2 °F Dew Point: 55 °F Humidity: 99% Wind: NNE at 4.7 mph Pressure: 29.29 in Hourly Precipitation: 0.22 in Graphs

Location: Hwy 26 and Cornell, Beaverton, OR

Updated: 3:20 PM PDT

Temperature: 55.7 °F Dew Point: 55 °F Humidity: 97% Wind: Calm Pressure: 29.67 in Hourly Precipitation: 0.25 in Graphs

Location: Helvetia Oregon, Hillsboro, OR

Updated: 3:10 PM PDT

Temperature: 55.4 °F Dew Point: 54 °F Humidity: 93% Wind: Calm Pressure: 29.23 in Hourly Precipitation: 0.00 in Graphs

Location: Mason Hill, North Plains, OR

Updated: 3:14 PM PDT

Temperature: 56.7 °F Dew Point: 56 °F Humidity: 96% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.09 in Graphs

Location: Bethany, Portland, OR

Updated: 3:14 PM PDT

Temperature: 55.9 °F Dew Point: 55 °F Humidity: 98% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.03 in Graphs

Location: South Hills, Cornelius, OR

Updated: 3:20 PM PDT

Temperature: 56.6 °F Dew Point: 55 °F Humidity: 95% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.12 in Graphs

Location: Forest Grove Honda Across From Ace Hardware, Forest Grove, OR

Updated: 2:50 PM PDT

Temperature: 56.0 °F Dew Point: 56 °F Humidity: 100% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Graphs

Location: Conifer Ridge, Beaverton, OR

Updated: 3:20 PM PDT

Temperature: 54.4 °F Dew Point: 51 °F Humidity: 89% Wind: West at 1.1 mph Pressure: 29.60 in Hourly Precipitation: 0.00 in Graphs

Location: 170th and Sugar Plum Ln, Beaverton, OR

Updated: 3:20 PM PDT

Temperature: 57.7 °F Dew Point: 56 °F Humidity: 93% Wind: Calm Pressure: 29.56 in Hourly Precipitation: 0.25 in Graphs

Location: Terra Linda, Portland, OR

Updated: 3:15 PM PDT

Temperature: 54.8 °F Dew Point: 53 °F Humidity: 95% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.47 in Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Portland or 
307 PM PDT Wednesday Oct 22 2014 


Synopsis...a moist and slow-moving frontal system is bringing heavy 
rain and gusty winds to southwest Washington and northwest Oregon 
today. The front will slowly move southeast this evening...moving 
into the Cascades overnight. Expect plenty of Post-frontal showers on 
Thursday...and possibly a thunderstorm along the north coast. Another 
potentially strong system may bring more rain and wind to the area on 
Saturday. Yet another front is possible early next week. 


&& 


Short term discussion...tonight through Saturday...a look at the 
latest Doppler radar imagery shows a wide band of moderate to heavy 
rain associated with a slow moving cold front. AMSU satellite derived 
precipitable water values are showing around 1.25 inches feeding into 
the frontal boundary. The rain band has moved very little through the 
course of the day...as a disturbance riding along the boundary led to 
a well defined baroclinic Leaf which effectively stalled the front. 
The upper level disturbance is apparent on water vapor satellite near 
43n 130w at current. The most impressive precipitation totals so far 
are in the S Washington and north or Coast Range and the S Washington Cascades...where 
generally 1.5 to 3 inches have fallen so far. The focus of the 
heavier rain has shifted slightly southward over the central or Coast 
Range and north Willamette Valley over the past couple of hours. 


Expect the heavy rain to push very slowly southeast through this 
evening. The latest river forecasts do not indicate any river 
flooding is likely to occur from this system. However...the coastal 
rivers draining the Coast Range are showing sharp rises this 
afternoon. Another concern is the potential for urban street flooding 
in the Willamette Valley. Heavy rain is expected to continue well 
into this evening. There are also plenty of leaves around...so 
clogged storm drains could be a concern. Things should begin to quiet 
down later this evening and overnight as the steadier rain moves into 
the Lane County Cascades. However...expect plenty of Post frontal 
showers remaining across the region through Thursday. A broad closed low 
off of the British Columbia coast will spin a couple of shortwaves 
toward the Pacific northwest overnight into tomorrow. This should serve to 
enhance the shower activity and may even bring a few thundershowers 
to the offshore waters along the north coast. 


Expect showers to taper off Thursday night into early Friday as upper level 
heights build upstream of ridging developing over The Rockies. Warmer 
air aloft will begin to stabilize the atmosphere. However...model 
agreement is fairly good that another period of light rain will 
spread into the region from south to north Friday afternoon and evening 
as a warm front lifts in ahead of another low pressure system. A 
brief break from the precipitation is being modeled for most of the 
region behind the warm front Friday night into early Sat. Confidence is 
beginning to increase that the low pressure system will strengthen 
rapidly offshore late Friday into early Sat...then push onshore along 
the Washington coast late Sat. If the low tracks close enough to the Oregon 
coast...like the GFS 12z is indicating...there could be potential for 
very gusty winds through the Willamette Valley. However...there is 
quite a bit of model spread in the exact timing and trajectory of the 
low...which will have significant implications on how this system 
impacts our forecast area.At this time...it appears that another wet 
and windy period is likely Sat...but details remain uncertain. Pyle 


Long term...Saturday night through Wednesday...an active weather 
pattern will persist through the long term forecast with frontal 
systems moving across the region every 24 to 48 hours. Models are in 
good agreement that a front will bring rain and gusty winds Saturday 
night into Sunday morning...with showers dwindling Sunday afternoon. 
Snow levels may drop down to near or just below the Cascade passes 
with the showers Sunday afternoon. A warm front ahead of the next 
system should generate light precipitation Sunday night and Monday 
before a cold front moves through Tuesday. The models are in less 
agreement with the strength and position of the low with this 
storm...but are in fair agreement on the timing of rain. Showers 
will continue Tuesday night into Wednesday...then another front is 
expected Wednesday afternoon or evening...with greater uncertainty 
on the timing and strength tj. 
&& 


Aviation...a mix of IFR...MVFR and VFR conditions will occur 
through the evening hours as steady rain associated with a cold 
front continues to reduce visibilities and occasionally produce 
lower ceilings. As the lower atmosphere destabilizes 
overnight behind the cold front and precipitation becomes more 
showery from north to south...expect VFR conditions to follow 
suit. Another developing weak low pressure system could 
temporarily reduce flight conditions Thursday morning into midday 
Thursday. 


Kpdx and approaches...Stead rain associated with a cold front 
will continue to produce occasional IFR to MVFR conditions late 
this afternoon into early this evening. Conditions should trend 
towards a mix of VFR and MVFR overnight and Thursday morning 
before conditions likely turn VFR Thursday afternoon. /Neuman 


&& 


Marine...a cold front continues to March southward across the 
central Oregon waters and based on weather stations at Newport and 
Florence...it appears to be exiting the waters. Will monitor 
trends...but the Gale Warning for the inner central Oregon waters 
appears about over despite short term models suggesting otherwise. 
Will let evening shift take in latest observations before canceling 
the Gale Warning for the central Oregon inner waters. 


Further north...a low pressure has been developing over our 
northwestern waters. It has deepened more than anticipated and 
just started producing low end gale force wind gusts of 35 knots at 
buoy 29. If winds have not peaked already at buoy 29...suspect 
they will in the next hour or two...before spreading into the 
northern inner waters around the mouth of the Columbia River. As a 
result...a Gale Warning for wind gusts to 35 knots was issued for the 
northern waters. Confidence in the details is low. 


For Thursday...seas will in general be on the decrease. 
However...one model suggests another weak low pressure will 
develop and move just north of the waters. This could result in 
at least small craft winds of 25 to 30 knots across the northern 
waters Thursday morning. Similar to todays winds...this may slow 
the downward trend in seas. 


Friday still looks relatively quiet across the waters as seas will 
likely drop below 10 feet. 


The big story will be this weekends low pressure system. Models 
continue to vary on the details...but generally agree a developing 
low pressure system...around 985mb...will move northward inside 130 
west and make landfall somewhere between Vancouver Island and the north 
Oregon coast. This will almost certainly produce gale force winds 
across the waters on Saturday...with a strong possibility of low end 
storm force gusts of 50 knots. Seas will likely rise sharply and 
approach 20 feet late Saturday. 


After a break in the weather late in the weekend and early next 
week...models suggest another strong low pressure will make landfall 
on the West Coast next Tuesday. Gale force to low end storm force 
winds certainly appear possible once again with this storm system. 
/Neuman 


&& 


Pqr watches/warnings/advisories... 
or...none. 
Washington...none. Pz...Gale Warning until 9 PM PDT this evening for coastal 
waters from Cape Shoalwater Washington to Florence or out 10 nm. 


Small Craft Advisory for winds until 3 am PDT Thursday for 
waters from Cape Shoalwater to Florence or from 10 to 60 nm. 


Small Craft Advisory for hazardous seas until 5 PM PDT Thursday 
for waters from Cascade Head to Florence or from 10 to 60 
nm. 


Small Craft Advisory for rough Columbia River bar until 5 PM PDT 
Thursday. 


&& 


$$ 


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This discussion is for northwest Oregon and southwest Washington 
from the Cascade crest to 60 nautical miles offshore. The area is 
commonly referred to as the forecast area. 
&& 






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