Seattle, Washington Weather Conditions

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Areal Flood Watch View All Alerts

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Current Conditions

  • 55°
  • Partly Cloudy
  • Wind: Calm
  • Humidity: 69%
  • Visibility: 10.0 miles
  • Dew Point: 45°
  • Pressure: 29.72 in. +

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Next 12 Hours

4  am
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Sunday
  • Rain
  • High: 59 °
  • Low: 48 °
  • Rain
  • Monday
  • Chance of Rain
  • High: 55 °
  • Low: 46 °
  • Chance of Rain
  • Tuesday
  • Rain
  • High: 59 °
  • Low: 41 °
  • Rain
  • Wednesday
  • Chance of Rain
  • High: 57 °
  • Low: 37 °
  • Chance of Rain
  • Thursday
  • Partly Cloudy
  • High: 54 °
  • Low: 37 °
  • Partly Cloudy

Forecast for Seattle, Washington

Updated: 1:00 AM PST on December 21, 2014

  • Sunday

    Overcast with rain. High of 59F. Breezy. Winds from the SW at 15 to 25 mph. Chance of rain 70%.

  • Sunday Night

    Overcast with a chance of rain. Low of 48F. Breezy. Winds from the SW at 10 to 20 mph. Chance of rain 40%.

  • Monday

    Mostly cloudy with a chance of rain. High of 55F. Winds from the South at 5 to 10 mph shifting to the ESE in the afternoon. Chance of rain 30%.

  • Monday Night

    Mostly cloudy with a chance of rain. Low of 46F. Winds less than 5 mph. Chance of rain 50%.

  • Tuesday

    Overcast with a chance of rain, then rain in the afternoon. High of 59F. Winds from the South at 5 to 15 mph. Chance of rain 50%.

  • Tuesday Night

    Overcast with a chance of rain. Low of 41F. Winds less than 5 mph. Chance of rain 80% with rainfall amounts near 1.0 in. possible.

  • Wednesday

    Overcast with a chance of rain. High of 57F. Winds less than 5 mph. Chance of rain 60%.

  • Wednesday Night

    Overcast. Low of 37F. Winds less than 5 mph.

  • Thursday

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

  • Thursday Night

    Partly cloudy. Low of 37F. Winds less than 5 mph.

  • Friday

    Overcast. High of 52F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 39F. Winds from the SSE at 5 to 10 mph.

  • Saturday

    Mostly cloudy with a chance of rain. High of 48F. Winds from the SSE at 5 to 10 mph. Chance of rain 40%.

  • Saturday Night

    Overcast. Low of 39F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 50F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy. Low of 32F. Winds less than 5 mph.

  • Monday

    Partly cloudy. High of 45F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 25F. Winds less than 5 mph.

  • Tuesday

    Partly cloudy. High of 46F. Winds less than 5 mph.

  • Tuesday Night

    Partly cloudy with a chance of rain. Low of 25F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday

    Partly cloudy with a chance of rain. High of 45F. Winds less than 5 mph. Chance of rain 40%.

  • Wednesday Night

    Clear. Fog overnight. Low of 25F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Areal Flood Watch  Statement as of 5:56 PM PST on December 20, 2014


... Flood Watch remains in effect through late Sunday night...

The Flood Watch continues for

* portions of western Washington... including the following
counties... Grays Harbor... Clallam... Jefferson... King... Lewis...
Pierce... Snohomish... and Thurston.

* Through late Sunday night.

* Snow levels will rise into the 6000 to 7000 foot range this
evening before lowering into the 4500 to 5500 foot range early
Sunday. In the 24 hour period ending at 4 PM PST Sunday... 1 to 3
inches of rain... locally higher on Mount Rainier... is forecast
to fall on the mountains.

* Additional heavy rain at times overnight through Sunday could
lead to flooding on some rivers. At this time... it appeared that
the Snoqualmie river and the Nisqually river near National have
the highest threat of flooding.

Precautionary/preparedness actions...

A Flood Watch means conditions are favorable for flooding but
flooding is not imminent or occurring. Monitor the latest
forecasts from the National Weather Service and be ready to act
quickly if flooding is observed or a warning is issued.



Www.Weather.Gov




 Record Report  Statement as of 12:32 am PST on December 21, 2014


... Record daily maximum rainfall set at Hoquiam Airport yesterday...

Record rainfall of 1.88 inches was set at Hoquiam WA Airport on Dec
20th. This breaks the old record of 1.38 set in 1974.




Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Belltown, Seattle, WA

Updated: 3:15 AM PST

Temperature: 52.9 °F Dew Point: 47 °F Humidity: 81% Wind: North at - Pressure: 29.70 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Herrera, Inc., Seattle, WA

Updated: 3:19 AM PST

Temperature: 52.1 °F Dew Point: 47 °F Humidity: 84% Wind: South at 5.0 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: UW Integrated Design Lab, Bullitt Center, Seattle, WA

Updated: 3:19 AM PST

Temperature: 50.8 °F Dew Point: 47 °F Humidity: 88% Wind: SSW at 3.0 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Capitol Hill, Seattle, WA

Updated: 3:16 AM PST

Temperature: 52.3 °F Dew Point: 46 °F Humidity: 80% Wind: North at - Pressure: 29.70 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Capitol Hill, Seattle, WA

Updated: 3:12 AM PST

Temperature: 51.8 °F Dew Point: 48 °F Humidity: 86% Wind: WSW at 9.0 mph Pressure: 29.70 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Stevens, Seattle, WA

Updated: 3:16 AM PST

Temperature: 51.6 °F Dew Point: 48 °F Humidity: 86% Wind: North at - Pressure: 29.76 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Queen Anne Southern Exposure, Seattle, WA

Updated: 3:15 AM PST

Temperature: 51.6 °F Dew Point: 45 °F Humidity: 77% Wind: SW at 5.0 mph Pressure: 29.43 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Seattle Girls School, Seattle, WA

Updated: 3:19 AM PST

Temperature: 50.6 °F Dew Point: 47 °F Humidity: 87% Wind: South at 3.0 mph Pressure: 29.71 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Seattle WA US, Seattle, WA

Updated: 2:42 AM PST

Temperature: 52 °F Dew Point: 49 °F Humidity: 88% Wind: SSW at 2 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Eastlake on Lake Union, Seattle, WA

Updated: 3:12 AM PST

Temperature: 52.0 °F Dew Point: 51 °F Humidity: 96% Wind: WSW at 2.7 mph Pressure: 29.37 in Hourly Precipitation: - Windchill: - Graphs

Location: Northeast Seattle, Seattle, WA

Updated: 3:15 AM PST

Temperature: 50.5 °F Dew Point: 49 °F Humidity: 94% Wind: North at - Pressure: 29.80 in Hourly Precipitation: - Windchill: - Graphs

Location: Queen Anne - Toddster weather, Seattle, WA

Updated: 3:18 AM PST

Temperature: 50.7 °F Dew Point: 46 °F Humidity: 83% Wind: SSE at 1.0 mph Pressure: 29.70 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Fremont Troll, Seattle, WA

Updated: 3:15 AM PST

Temperature: 52.5 °F Dew Point: 48 °F Humidity: 85% Wind: South at 4.0 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest UNIVERSITY OF WASHINGTON WA US WAAQ, Seattle, WA

Updated: 1:55 AM PST

Temperature: 52 °F Dew Point: 49 °F Humidity: 88% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: North Queen Anne, Seattle, WA

Updated: 3:16 AM PST

Temperature: 50.9 °F Dew Point: 50 °F Humidity: 96% Wind: North at - Pressure: 29.76 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: West Seattle (Two Dogs Observatory), Seattle, WA

Updated: 3:13 AM PST

Temperature: 50.6 °F Dew Point: 47 °F Humidity: 87% Wind: Calm Pressure: 29.71 in Hourly Precipitation: - Windchill: - Graphs

Location: University District, Seattle, WA

Updated: 3:15 AM PST

Temperature: 52.7 °F Dew Point: 49 °F Humidity: 86% Wind: SW at 7.0 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Fremont, Seattle, WA

Updated: 3:14 AM PST

Temperature: 52.3 °F Dew Point: 46 °F Humidity: 80% Wind: SSW at 5.0 mph Pressure: 29.64 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Fremont, Seattle, WA

Updated: 3:15 AM PST

Temperature: 51.6 °F Dew Point: 48 °F Humidity: 89% Wind: North at - Pressure: 29.76 in Hourly Precipitation: - Windchill: - Graphs

Location: Queen Anne - Western Exposure, Seattle, WA

Updated: 3:15 AM PST

Temperature: 51.5 °F Dew Point: 47 °F Humidity: 86% Wind: SW at 3.0 mph Pressure: 29.67 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Alki, Seattle, WA

Updated: 3:19 AM PST

Temperature: 51.1 °F Dew Point: 49 °F Humidity: 92% Wind: SW at 2.9 mph Pressure: 29.72 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Magnolia, Seattle, WA

Updated: 1:19 AM WSDT

Temperature: 50.3 °F Dew Point: 47 °F Humidity: 87% Wind: Calm Pressure: 29.70 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest SEATTLE DUWAMISH EAST MARGINAL WA US WAAQ, Seattle, WA

Updated: 2:00 AM PST

Temperature: 55 °F Dew Point: - Humidity: - Wind: SW at 8 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: North Delridge, Seattle, WA

Updated: 3:04 AM PST

Temperature: 51.4 °F Dew Point: 47 °F Humidity: 85% Wind: West at 3.2 mph Pressure: 29.41 in Hourly Precipitation: - Windchill: - Graphs

Location: Phinney Ridge, Seattle, WA

Updated: 3:19 AM PST

Temperature: 51.1 °F Dew Point: 47 °F Humidity: 86% Wind: WSW at 7.0 mph Pressure: 29.74 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Magnolia - MaxHome, Seattle, WA

Updated: 3:19 AM PST

Temperature: 51.5 °F Dew Point: 48 °F Humidity: 88% Wind: SSW at 3.0 mph Pressure: 29.69 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Magnolia, Seattle, WA

Updated: 3:19 AM PST

Temperature: 52.3 °F Dew Point: 47 °F Humidity: 81% Wind: Calm Pressure: 29.70 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: SE Green Lake, Seattle, WA

Updated: 3:18 AM PST

Temperature: 51.7 °F Dew Point: 48 °F Humidity: 87% Wind: South at 1.0 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Tangletown, Seattle, WA

Updated: 3:18 AM PST

Temperature: 50.5 °F Dew Point: 49 °F Humidity: 93% Wind: South at 4.7 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Ballard - West Woodland, Seattle, WA

Updated: 3:19 AM PST

Temperature: 51.8 °F Dew Point: 48 °F Humidity: 86% Wind: SE at 4.0 mph Pressure: 29.71 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Southwest, Seattle, WA

Updated: 3:15 AM PST

Temperature: 49.3 °F Dew Point: 48 °F Humidity: 95% Wind: North at - Pressure: 29.72 in Hourly Precipitation: - Windchill: 49 °F Graphs

Location: APRSWXNET Bow WA US, Mercer Island, WA

Updated: 2:48 AM PST

Temperature: 51 °F Dew Point: 47 °F Humidity: 85% Wind: West at 10 mph Pressure: 29.64 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Genesee Hill, West Seattle, Seattle, WA

Updated: 3:18 AM PST

Temperature: 50.2 °F Dew Point: 42 °F Humidity: 72% Wind: East at 3.4 mph Pressure: 29.60 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Magnolia, Seattle, WA

Updated: 3:15 AM PST

Temperature: 51.3 °F Dew Point: 49 °F Humidity: 92% Wind: North at - Pressure: 29.73 in Hourly Precipitation: - Windchill: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Seattle Washington 
940 PM PST Sat Dec 20 2014 


Synopsis...strong and moist westerly flow aloft will persist 
through Sunday. High pressure aloft will build over the region 
Sunday night and will remain over the area on Monday for a drying 
trend. The high will weaken on on Tuesday...allowing a front to 
sag into the area from the northwest. 


&& 


Short term... 
the steady precipitation has become showery across the County Warning Area. However 
strong orographic enhancement will result in locally heavy showers 
at times on the west facing slopes of the mountains. Strong 
shadowing to the Lee of the olympic range will result in parts of 
the Puget Sound sound region being mainly dry overnight. 


Strong and moist zonal flow aloft will continue on Sunday. Fast- 
moving disturbances embedded in this flow will result in locally 
heavy showers on the west facing slopes of the Cascades. The snow 
level should be mainly in the 4000 to 5000 foot range during the 
day...so expect the precipitation to fall mainly as snow above the 4000 
foot level. In fact...it looks like a Winter Weather Advisory will 
be needed for the Cascades for Sunday as amounts could end up in 
the 6 to 11 inch range...especially in the central Cascades. 


Expect a gradual drying trend Sunday night due to an upper ridge 
building over the region. This ridge will prevail over the area on 
Monday for dry conditions across much of the County Warning Area. 


Models showed the ridge flattening on Tuesday with a baroclinic zone 
sagging south over the County Warning Area during the day. 33/05 


Long term from the previous discussion... 
a cool upper level trough will Cut Through western Washington on Wednesday 
for cooler weather and more showers. Snow levels will drop to 
around 2000 feet. Dry northerly flow will prevail on Christmas day 
for mainly dry weather...with just isolated showers in the Cascades. 
This pattern will continue into Friday. Models then show another 
cool upper trough crossing the Pacific northwest on Saturday...with showers 
lingering into sun. 33 


&& 


Hydrology... 
a Flood Warning was issued for the Skokomish River late in the 
afternoon. The river was still rising and was at 16.9 feet around 
915 PM PST. Other rivers such as the Elwha were showing sharp 
rises. A Flood Watch remains in effect for much of the rivers 
draining off the Olympics and central Cascades through late Sunday 
night. 


Snow levels also rose this evening...with the snow changing over 
to rain above the 3000 foot level. A milder air mass along with 
strong upslope flow will result in locally heavy showers at 
times...mainly on the Cascades...through Sunday. The models 
indicated an additional 1-2 inches of precipitation will fall on the 
Cascades overnight into Sunday morning. However the snow levels 
will lower into the 4500 to 5500 foot range by Sunday morning...so 
some of this precipitation will be in the form of snow. 


The rivers that do experience flooding should crest during the 
day Sunday...Sunday night at the latest. 


Flooding is not expected Monday through Saturday. 


&& 


Aviation...strong westerly flow aloft will prevail tonight and 
Sunday. Strong onshore flow at the surface will start to ease later 
Sunday. The air mass will be moist and stable. Low clouds tonight. 
Ceilings should lift a little during the day on Sunday. 


Ksea...low clouds. Ceilings lifting a bit Sunday afternoon. 
Southerly wind 15g30kt...easing a bit Sunday afternoon. Schneider 


&& 


Marine...a strong frontal system will move onshore tonight... 
bringing gales to most waters. Sunday will be a Post-frontal day with 
onshore flow easing Sunday night and Monday. High pressure will 
build over the area on Monday. A weaker frontal system will arrive 
around Tuesday. Schneider 


&& 


Sew watches/warnings/advisories... 
Washington...flood warnings or watches are in effect for much of the County Warning Area. 


Pz...gale warnings are in effect for the coastal waters...Strait 
of Juan Delaware fuca...and northern inland waters. 


Small craft advisories are in effect for the remaining 
waters. 


Small Craft Advisory for rough bar in effect until 6 PM Sunday 
for the Grays Harbor bar. 


&& 


$$ 


Www.Weather.Gov/Seattle 


You can see an illustrated version of this forecast discussion at 
www.Weather.Gov/Seattle/gafd/latest_webafd.Html 



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