Hermiston, Oregon

National Weather Service: Wind Advisory

Current Conditions

 
Temp: 44°
Dew Point: 27°
Humidity: 51%
Wind: SSE 7 mph
Visibility: 10.0 miles
Pressure: 29.98 in. -
Sky: Clear
Wind Chill: 40°

 

Customize Your Weather

Get weather by ZIP code, city, state, airport code or country:

Weather by E-mail: Get forecasts and storm alerts delivered to you.

Sign Up...

Almanac

Average High: 46°

Average Low: 33°

Record high/year: 74° (1974)

Record low/year: 9° (1985)

Sunrise: 7:05 AM

Sunset: 4:20 PM

Detailed History

Sun and Moon

Sunrise: 07:05 AM (PST)

Moon Rise: 11:17 AM (PST) 11 21

Sunset: 04:20 PM (PST)

Moon Set: 08:38 PM (PST) 11 21

Moon Phase

Today
Nov. 24
Dec. 02
Dec. 08
Dec. 16

 

Local Radar

Local Satellite



Next 12 Hours

 
5  pm
8  pm
11  pm
2  am
5  am
Rain Rain
Rain Rain
Rain Rain
Rain Rain
Chance of Rain Chance of Rain
45°
43°
41°
40°
38°

 

Forecast data from the National Digital Forecast Database


5-Day Forecast

Saturday Mostly Cloudy Hi 49° Lo 34° Mostly Cloudy
Sunday Chance of Rain Hi 47° Lo 29° Chance of Rain
Monday Mostly Cloudy Hi 45° Lo 31° Mostly Cloudy
Tuesday Mostly Cloudy Hi 47° Lo 31° Mostly Cloudy
Wednesday Mostly Cloudy Hi 45° Lo 31° Mostly Cloudy

 

Forecast for Lower Columbia Basin

Updated: 4:08 PM PST on November 21, 2009
Wind Advisory in effect from 4 am to 4 PM PST Sunday...

Tonight

Cloudy. A slight chance of rain in the evening...then widespread rain overnight. Very windy. Lows 35 to 41. South wind 10 to 20 mph increasing to 25 to 35 mph overnight. Gusts around 30 mph increasing to 45 mph overnight. Chance of precipitation 80 percent.

 

Sunday

Mostly cloudy. A chance of rain in the morning...then a slight chance of showers in the afternoon. Very windy. Highs 47 to 52. West wind 30 to 40 mph. Gusts around 55 mph in the morning. Chance of precipitation 50 percent.

 

Sunday Night

Mostly cloudy in the evening then becoming partly cloudy. Breezy. Lows 29 to 34. Southwest wind 15 to 25 mph decreasing to 5 to 15 mph overnight.

 

Monday

Partly cloudy in the morning then becoming cloudy. Highs 43 to 48. Light wind.

 

Monday Night

Mostly cloudy. Lows 32 to 37. South wind 5 to 10 mph.

 

Tuesday

Partly cloudy. Highs 43 to 48.

 

Tuesday Night

Mostly cloudy. Patchy fog and freezing fog. Lows 26 to 34.

 

Wednesday

Partly cloudy. Highs 39 to 45.

 

Wednesday Night

Partly cloudy. Patchy fog and freezing fog. Lows 29 to 35.

 

Thanksgiving Day

Mostly cloudy. A chance of rain. Highs 45 to 50.

 

Thursday Night

Partly cloudy. A slight chance of rain showers. Lows 34 to 39.

 

Friday

Partly cloudy. Highs 45 to 50.

 

Friday Night

Partly cloudy. Lows 28 to 35.

 

Saturday

Mostly cloudy. A slight chance of showers. Highs 42 to 47.

 

 

 Wind Advisory  Statement as of 3:04 PM PST on November 21, 2009


... Wind Advisory in effect from 4 am to 4 PM PST Sunday...

The National Weather Service in Pendleton has issued a Wind
Advisory... which is in effect from 4 am to 4 PM PST Sunday.

South to southwest winds of 25 to 35 mph with gusts to 55 mph will
develop late tonight and persist through Sunday afternoon.
Strongest winds will occur though the Columbia River gorge and
near north to northeast facing slopes of the Horse Heaven Hills
and Rattlesnake Mountain.

Precautionary/preparedness actions...

A Wind Advisory is issued when sustained winds are forecast
between 30 and 39 mph or gusts ranging from 45 to 57 mph. Winds
of these magnitudes can make driving difficult... especially for
high profile vehicles. Minor property damage may also occur. For
additional weather information... check our web site at
www.Weather.Gov/Pendleton.






Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: JW's Backyard - West Park Area, Hermiston, OR

Updated: 5:03 PM PST

Temperature: 44.6 °F Dew Point: 27 °F Humidity: 50% Wind: East at 2.2 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Windchill: 45 °F Historical Graphs

Location: South Hill, Umatilla, OR

Updated: 5:03 PM PST

Temperature: 45.0 °F Dew Point: 26 °F Humidity: 48% Wind: SSE at 6.0 mph Pressure: 29.93 in Hourly Precipitation: - Windchill: 42 °F Historical Graphs

Location: MesoWest Umatilla OR US PDTWFO, Umatilla, OR

Updated: 4:30 PM PST

Temperature: 43 °F Dew Point: 34 °F Humidity: 70% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Windchill: 43 °F Historical Graphs

Location: Umatilla High School, Umatilla, OR

Updated: 5:00 PM PST

Temperature: 41.0 °F Dew Point: 32 °F Humidity: 71% Wind: ESE at 3.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Windchill: 41 °F Historical Graphs

Location: Madison Farms, Echo, OR

Updated: 5:02 PM PST

Temperature: 41.3 °F Dew Point: 25 °F Humidity: 52% Wind: SSE at 3.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: 41 °F Historical Graphs

Location: MesoWest Echo OR US UPR, Echo, OR

Updated: 3:30 PM PST

Temperature: 47 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 47 °F Historical Graphs

Location: MesoWest Reese OR US CPCRC, Echo, OR

Updated: 4:00 PM PST

Temperature: 46 °F Dew Point: 27 °F Humidity: 47% Wind: SSE at 8 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 42 °F Historical Graphs

Location: MesoWest Horse Heaven @ I-82 WA US WA DOT, Kennewick, WA

Updated: 3:15 PM PST

Temperature: 45 °F Dew Point: 28 °F Humidity: 51% Wind: SW at 7 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Windchill: 41 °F Historical Graphs

Location: RAWS UMATILLA OR US, Irrigon, OR

Updated: 4:29 PM PST

Temperature: 43 °F Dew Point: 28 °F Humidity: 56% Wind: ESE at 5 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 40 °F Historical Graphs

Location: MesoWest Lorenzen Road (I-84 MP 198.5) OR US ODOT, Echo, OR

Updated: 4:21 PM PST

Temperature: 43 °F Dew Point: 25 °F Humidity: 48% Wind: SE at 13 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 36 °F Historical Graphs

Location: MesoWest Barnhart OR US UPR, Pendleton, OR

Updated: 4:00 PM PST

Temperature: 47 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 47 °F Historical Graphs

Location: National Weather Service, Pendleton, OR

Updated: 5:03 PM PST

Temperature: 41.8 °F Dew Point: 25 °F Humidity: 51% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: 42 °F Historical Graphs

Location: MesoWest Castle OR US UPR, Boardman, OR

Updated: 4:00 PM PST

Temperature: 47 °F Dew Point: - Humidity: - Wind: NNW at 2 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 47 °F Historical Graphs

MSN Maps of:

Temperature Dew Point Humidity Wind Pressure Hourly Precipitation -

NWS Forecaster Discussion




060 
fxus66 kpdt 212332 aaa 
afdpdt 


Area forecast discussion...updated 
National Weather Service Pendleton or 
332 PM PST Sat Nov 21 2009 


Updated aviation discussion 


Short term...tonight through Monday...thoughts have changed little 
from the previous overnight shift. Models remained very consistent 
with the progression of the system across the area. With a couple of 
pronounced issues dealt with today. 


First, decided to follow the surface low as shown by the NAM with 
the 18z GFS now lending the closest support of recent runs. This 
gives a very tight pressure gradient across most of the area as the 
surface low tracks across the Washington Cascades and the lower 
Columbia Basin before lifting northeast later tomorrow. These 
gradients, combined with a very stable lower level air mass, will 
give a prolonged period of strong winds aloft down toward the 
surface. Will issue numerous wind advisories and high wind warnings 
as a result. 


The second issue deals with snowfall. Snow level will be somewhat 
variable with a brief period of warm air advection as warm diffluent 
air crosses the Cascades tonight. The Washington Cascades will see 
significant accumulations mainly tonight with the major passes 
impacted. Do think mainly western areas will bear the brunt after 
the cold front passes later tonight and Sunday. The Blue Mountains 
will start seeing accumulations later tonight at the higher 
elevations and passes but snow levels will drop and accumulation 
rates will increase mainly tomorrow after the cold front passes and 
a northwesterly flow develops. Both areas will see significant 
blowing snow but dont have the confidence to go with a Blizzard 
Warning, but it bears watching however. 


Other mountain areas will see snow and maybe some blowing as well, 
but should stay below advisory amounts. Precipitation should begin 
tapering off across the west by tomorrow afternoon and gradually 
taper off across the east tomorrow evening. /Jbonk 




Long term...Monday night through Saturday...a weak system will 
break up Monday night it rides over a building upper level ridge. 
The building ridge will move slowly east over the Pacific northwest 
Tuesday. The departing system will combine will upslope flow in the 
mountains to keep a slight chance of showers in northeast Oregon 
Tuesday. Also...slopover precipitation may occur near the Cascades. 
Subsidence associated with the ridge will provide light winds and 
clearing skies with the strong surface inversions Tuesday night. In 
the lower Columbia Basin patchy fog and freezing fog will form at 
night under the inversions and keep daytime temperatures Wednesday 
below normal. At higher elevations the surface inversions will break 
during the day and warmer air aloft associated with the ridge will 
reach the surface to produce large diurnal temperature spreads. 
Wednesday night through Friday there are dramatic differences 
between the GFS and European model (ecmwf) models even though both have southwest 
flow at 500 mb. The 0z European model (ecmwf) has a more progressive pattern with a 
front at an angle to the 500 mb flow that will move into eastern 
Washington and Oregon and form a deformation zone over the Blue 
Mountains that drops half an inch of rain Thursday. The 12z GFS has 
the front parallel to the 500 mb flow so it remains offshore until 
Friday. The GFS ensemble runs show 500 mb flow running to both 
extremes with no clustering. Decided to make little change to 
existing forecast with a chance of probability of precipitation most places and likely probability of precipitation 
over the mountains. Think European model (ecmwf) is overblown with amount of 
precipitation unless the deformation band does set up...but did 
trend toward it by keeping at least a chance of probability of precipitation across the 
area. When the 12z run of the European model (ecmwf) arrived it was slower with no 
deformation band...but it still supported the faster arrival of the 
front during the day Thursday. Both models had precipitation Friday 
with the GFS pushing the front through and the European model (ecmwf) moving the 
upper level trough through. With low confidence due to model 
differences kept a low chance probability of precipitation across the area Saturday. 
Coonfield 


&& 


Aviation...0z tafs...VFR conditions will prevail in most areas 
through 04z with broken middle level ceilings. Another Pacific weather 
system will move into the area tonight and early Sunday morning with 
rain and mountain snow. This will cause areas of MVFR conditions. 
IFR with possibly even LIFR conditions in local areas with rain and 
snow...especially near any mountain ranges or over the central 
Oregon plateaus near taf site krdm. Winds of 10 to 20 kts with gusts 
to 30 kts from the southwest will be common in all areas today. 
However the winds will increase overnight tonight as pressure 
gradients tighten up ahead of the next weather system. During that 
time winds are expected to increase to at least 15 to 25 kts with 
gusts to 40 kts or possibly even higher into Sunday. 76 




Preliminary point temps/pops... 
PDT 41 47 31 43 / 80 70 10 10 
alw 39 48 32 43 / 90 80 10 10 
psc 37 51 30 44 / 90 50 10 10 
ykm 32 45 29 44 / 90 40 10 10 
hri 38 49 29 45 / 80 50 10 10 
eln 34 39 26 39 / 90 70 10 20 
rdm 35 45 24 47 / 80 40 10 10 
lgd 36 42 23 40 / 80 80 20 10 
gcd 34 41 21 44 / 70 60 10 10 
dls 37 49 32 47 / 80 40 20 10 


&& 


PDT watches/warnings/advisories... 
or...High Wind Warning from 7 PM this evening to 10 am PST Sunday for 
orz049-050. 


Winter Storm Warning from 10 PM this evening to 7 PM PST Sunday 
for orz502. 


High Wind Warning from 1 am to 4 PM PST Sunday for orz042. 


Wind Advisory from 10 PM this evening to 1 PM PST Sunday for 
orz043. 


Wind Advisory from 10 PM this evening to 7 PM PST Sunday for 
orz501-504. 


Winter Weather Advisory from 10 PM this evening to 7 PM PST 
Sunday for orz503. 


Wind Advisory from 4 am to 4 PM PST Sunday for orz041-044. 


Washington...Winter Weather Advisory from 7 PM this evening to 4 PM PST 
Sunday for waz501-502. 


Winter Storm Warning from 10 PM this evening to 7 PM PST Sunday 
for waz030. 


Wind Advisory from 10 PM this evening to 7 PM PST Sunday for 
waz029. 


Wind Advisory from 4 am to 4 PM PST Sunday for waz024-028. 


&& 


Threat index 
Sunday : red 
Monday : green 
Tuesday : green 


Green: none or limited need for watches, warnings, or advisories. 
Yellow: a few watches, warnings, or advisories possible or in effect. 
Red: numerous watches, warnings, or advisories possible or in effect. 


For additional weather information, check our web site at... 
www.Weather.Gov/Pendleton 


$$ 


87/76/76 












National Weather Service Glossary of Abbreviations

Non-Expanded Version (with abbreviations)

Powered by the Weather Underground, Inc.