Tacoma, Washington Weather Conditions

Severe Weather Alerts

Your Weather

To update your location please enter your ZIP code, city, state, airport code or country in the field below. Weather by E-mail: Forecast storm alerts. Weather E-Mail Alert Sign Up »

Current Conditions

  • 56°
  • Light Rain
  • Wind: Variable 5 mph
  • Humidity: 90%
  • Visibility: 8.0 miles
  • Dew Point: 53°
  • Pressure: 29.60 in. -

Select a Section

Click a section below for more information.

Next 12 Hours

5  pm
8  pm
11  pm
2  am
5  am
Rain Showers
Rain Showers
Rain Showers
Rain Showers
Rain Showers
Rain Showers
Rain Showers
Rain Showers
Chance of a Thunderstorm
Chance of T-storms
57°
55°
55°
57°
52°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Rain
  • High: 59 °
  • Low: 52 °
  • Rain
  • Thursday
  • Chance of a Thunderstorm
  • High: 57 °
  • Low: 46 °
  • Chance of T-Storms
  • Friday
  • Rain
  • High: 59 °
  • Low: 46 °
  • Rain
  • Saturday
  • Chance of Rain
  • High: 59 °
  • Low: 50 °
  • Chance of Rain
  • Sunday
  • Chance of Rain
  • High: 59 °
  • Low: 48 °
  • Chance of Rain

Forecast for Tacoma, Washington

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

  • Wednesday

    Overcast with rain. High of 59F. Winds from the South at 5 to 20 mph. Chance of rain 100% with rainfall amounts near 0.4 in. possible.

  • Wednesday Night

    Overcast with rain showers, then a chance of a thunderstorm and rain showers after midnight. Low of 52F. Winds from the South at 5 to 10 mph. Chance of rain 90% with rainfall amounts near 0.7 in. possible.

  • Thursday

    Overcast with a chance of a thunderstorm and rain showers. High of 57F. Winds from the SSW at 10 to 15 mph. Chance of rain 80% with rainfall amounts near 0.2 in. possible.

  • Thursday Night

    Overcast with rain showers. Low of 46F. Winds from the SSW at 5 to 10 mph. Chance of rain 70%.

  • Friday

    Overcast with a chance of rain, then rain in the afternoon. High of 59F. Winds from the ESE at 5 to 10 mph shifting to the NE in the afternoon. Chance of rain 50%.

  • Friday Night

    Overcast with a chance of rain. Low of 46F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday

    Overcast with a chance of rain. High of 59F. Winds from the ENE at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Saturday Night

    Overcast with a chance of rain. Low of 50F. Breezy. Winds from the South at 15 to 25 mph. Chance of rain 40%.

  • Sunday

    Overcast in the morning, then mostly cloudy with a chance of rain. High of 59F. Winds from the SSW at 10 to 15 mph. Chance of rain 40%.

  • Sunday Night

    Partly cloudy. Low of 48F. Winds from the South at 5 to 10 mph.

  • Monday

    Mostly cloudy with a chance of rain. High of 54F. Winds from the South at 5 to 10 mph. Chance of rain 50%.

  • Monday Night

    Overcast with a chance of rain. Low of 50F. Winds less than 5 mph. Chance of rain 40% with rainfall amounts near 0.3 in. possible.

  • Tuesday

    Partly cloudy with a chance of rain. High of 59F. Winds from the NNE at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.6 in. possible.

  • Tuesday Night

    Mostly cloudy with a chance of rain. Low of 48F. Winds from the SSW at 5 to 10 mph. Chance of rain 50%.

  • Wednesday

    Partly cloudy with a chance of rain. High of 57F. Winds less than 5 mph. Chance of rain 50%.

  • Wednesday Night

    Overcast with a chance of rain. Low of 46F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.

  • Thursday

    Partly cloudy with a chance of rain. Fog early. High of 55F. Winds less than 5 mph. Chance of rain 50% with rainfall amounts near 0.2 in. possible.

  • Thursday Night

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

  • Friday

    Mostly cloudy with a chance of a thunderstorm. Fog early. High of 54F. Winds less than 5 mph. Chance of rain 20%.

  • Friday Night

    Partly cloudy. Low of 39F. Winds less than 5 mph.

  • Saturday

    Partly cloudy with a chance of a thunderstorm. High of 54F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday Night

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

  • Sunday

    Clear. High of 55F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Public Information Statement  Statement as of 2:00 PM PDT on October 22, 2014



... 24 hour wind reports around western Washington...

These are the latest 24 hour wind reports around the area. All
reports are gusts... except those with a (p) are peak wind... and
those with a (s) are sustained winds.

Location speed time/date

... Admiralty Inlet area...
Whidbey Island NAS (47 ft) 56 mph(p) 0243 am 10/22
cama beach (9 ft) 48 mph 0319 PM 10/21
2 WNW Oak Harbor (158 ft) 39 mph 1144 PM 10/21
2 W Oak Harbor (106 ft) 36 mph 0503 PM 10/21
Coupeville (98 ft) 33 mph 1229 am 10/22
Fort Worden dock (22 ft) 32 mph(s) 0823 PM 10/21
Keystone Ferry dock (9 ft) 30 mph(s) 1015 PM 10/21
4 NE Gardiner (282 ft) 30 mph 0944 PM 10/21
2 W Port Townsend (252 ft) 30 mph 0215 am 10/22
Port Townsend (190 ft) 29 mph 0824 PM 10/21
2 NW Port Hadlock (258 ft) 29 mph 0441 PM 10/21
1 SSW Freeland (59 ft) 25 mph 0622 PM 10/21
Indian Island (42 ft) 24 mph 1243 PM 10/22
6 E Coupeville (145 ft) 21 mph 1050 PM 10/21

... Bellevue and vicinity...
1 S Eastgate (1170 ft) 31 mph 0716 am 10/22
Kenmore (42 ft) 21 mph 0233 PM 10/21
1 NW Eastgate (419 ft) 21 mph 0805 am 10/22

... Bremerton and vicinity...
4 SW Bremerton (482 ft) 29 mph 0255 am 10/22
2 NNE Silverdale (367 ft) 26 mph 0710 PM 10/21
1 ESE Poulsbo (278 ft) 24 mph 0214 PM 10/21
1 E Suquamish (55 ft) 22 mph 0342 PM 10/21

... Central coast...
Hoquiam bowerman ap (12 ft) 41 mph(p) 0314 am 10/22
3 NNW Ocean City (16 ft) 33 mph 0213 am 10/22
2 N Ocean Shores (15 ft) 30 mph 0847 PM 10/21
10 ENE Cape Elizabeth (618 ft) 25 mph 0931 PM 10/21

... East Puget Sound lowlands...
Eatonville (838 ft) 30 mph 0624 am 10/22
Enumclaw (744 ft) 27 mph 0422 am 10/22
1 NE South Prairie (705 ft) 26 mph 0313 am 10/22
2 ESE North Bend (608 ft) 25 mph 0142 am 10/22
2 ESE North Bend (814 ft) 25 mph 0410 am 10/22
North Bend (420 ft) 23 mph 0350 am 10/22
North Bend (439 ft) 23 mph 0400 am 10/22
1 SW Enumclaw (745 ft) 22 mph 0349 am 10/22
Enumclaw (780 ft) 21 mph 0723 am 10/22
1 NW Prairie Ridge (630 ft) 20 mph 0300 am 10/22
1 SW Bonney Lake (666 ft) 20 mph 0333 am 10/22
3 NNE Bonney Lake (540 ft) 20 mph 0155 am 10/22

... Eastern Strait of Juan de Fuca...
1 ENE Blyn (255 ft) 35 mph 0140 am 10/22
3 NNW Gardiner (259 ft) 33 mph 0908 PM 10/21
2 ESE Sequim (173 ft) 25 mph 0942 PM 10/21
3 W Sequim (166 ft) 23 mph(s) 1204 am 10/22

... Everett and vicinity...
Snohomish County (paine field) 31 mph(p) 0946 PM 10/21
Arlington 28 mph 0855 am 10/22
Everett (9 ft) 26 mph 0210 PM 10/21
3 S Everett (121 ft) 20 mph 0310 PM 10/21

... Hood Canal area...
1 WSW Brinnon (689 ft) 42 mph 0123 am 10/22
Shelton Airport (271 ft) 36 mph(p) 1245 am 10/22
Quilcene (62 ft) 30 mph 0236 am 10/22
2 NNW Brinnon (1148 ft) 26 mph 0959 PM 10/21
5 S Tahuya (270 ft) 26 mph 0111 am 10/22
5 E Port Ludlow (49 ft) 26 mph 0155 PM 10/21
2 SSE Seabeck (415 ft) 25 mph 0500 am 10/22
4 W Bremerton (1687 ft) 24 mph(s) 0433 am 10/22
1 WNW Belfair (265 ft) 21 mph 1224 am 10/22
5 ENE Shelton (200 ft) 21 mph 0104 am 10/22
6 ESE Port Ludlow (180 ft) 20 mph 0742 PM 10/21

... Lower Chehalis valley area...
5 WSW Porter (1768 ft) 34 mph 1200 am 10/22
Elma (59 ft) 24 mph 1239 am 10/22

... North coast...
4 NNW Sappho (2305 ft) 48 mph 1200 am 10/22
Quillayute Airport (185 ft) 45 mph(p) 1014 PM 10/21
La Push nos tide gauge 44 mph 1030 PM 10/21
Forks (303 ft) 32 mph 1133 PM 10/21
5 S Neah Bay (1531 ft) 30 mph(s) 1200 am 10/22

... Olympics...
2 SW Hurricane Ridge (5151 ft) 48 mph 0800 PM 10/21
7 W Grisdale (2400 ft) 38 mph 0608 PM 10/21
7 NW Lilliwaup (2200 ft) 32 mph 1036 PM 10/21
13 WSW Joyce (2400 ft) 27 mph 1125 PM 10/21
6 SW Blyn (2400 ft) 26 mph 1209 am 10/22
4 WSW Sequim (1528 ft) 20 mph 0117 am 10/22

... San Juan County...
7 E Friday Harbor (114 ft) 63 mph 1220 am 10/22
Friday Harbor Airport 49 mph 1109 PM 10/21
3 se Eastsound (1033 ft) 41 mph 1044 PM 10/21
4 SSW Roche Harbor (36 ft) 39 mph 1108 PM 10/21
Friday Harbor 34 mph(p) 1130 PM 10/21
Orcas Island ap 33 mph 0115 am 10/22
nps English Camp (60 ft) 32 mph 0137 am 10/22
5 SSW Eastsound (167 ft) 32 mph 0102 am 10/22

... Seattle and vicinity...
Des Moines (272 ft) 26 mph 0444 am 10/22
1 W Hunts Point (22 ft) 26 mph 0400 PM 10/21
Golden Gardens Seattle (20 ft) 25 mph 0250 am 10/22
Henderson Bay (27 ft) 25 mph 1250 am 10/22
Seattle Tacoma Arpt (370 ft) 24 mph 0453 am 10/22
3 NW White Center (377 ft) 23 mph 0200 am 10/22
4 S Sheridan beach (301 ft) 21 mph 0143 PM 10/21
1 NNW Federal Way (174 ft) 21 mph 0235 am 10/22
1 SSW North Hill (328 ft) 21 mph 1255 am 10/22
4 WNW Hunts Point (229 ft) 20 mph 0333 PM 10/21

... Southwest interior...
Olympia Airport (188 ft) 37 mph(p) 0129 am 10/22
1 WSW Lacey (210 ft) 35 mph 0100 am 10/22
4 ESE Tumwater (189 ft) 33 mph 1154 PM 10/21
5 S Lacey (229 ft) 29 mph 1238 am 10/22
1 WNW Nisqually (40 ft) 28 mph 0310 am 10/22
1 SW Yelm (347 ft) 28 mph 0920 PM 10/21
1 NE Yelm (295 ft) 28 mph 1243 am 10/22
1 N Lacey (235 ft) 26 mph 0124 am 10/22
1 NW Chehalis (177 ft) 26 mph 0315 PM 10/21
1 WNW Yelm (313 ft) 25 mph 1134 PM 10/21
1 WNW Olympia (180 ft) 25 mph 1159 PM 10/21
Grand Mound (223 ft) 25 mph 1220 am 10/22
1 NNE Napavine (436 ft) 25 mph 1238 am 10/22
Maytown (200 ft) 24 mph 0215 am 10/22
1 WSW Rochester (154 ft) 23 mph 0228 am 10/22
1 SSE Tumwater (220 ft) 20 mph 0135 am 10/22

... Tacoma area...
2 W Parkland (321 ft) 31 mph(p) 1154 PM 10/21
Tacoma Narrows Airport 30 mph(p) 0941 PM 10/21
4 ESE DuPont (301 ft) 30 mph(p) 0300 PM 10/21
1 W Ruston (213 ft) 28 mph 1234 am 10/22
Orting (186 ft) 22 mph 0605 am 10/22
1 W Tacoma (360 ft) 22 mph 1200 am 10/22
1 NW Fircrest (358 ft) 21 mph 1215 am 10/22
2 S Tacoma (340 ft) 21 mph 1227 am 10/22
1 NE Lakewood (230 ft) 20 mph 0334 PM 10/21
2 NNW Midland (357 ft) 20 mph 0305 PM 10/21
Tacoma (361 ft) 20 mph 1129 PM 10/21
1 N South Hill (490 ft) 20 mph 1215 am 10/22
Elk Plain (439 ft) 20 mph 0138 am 10/22
2 N Gig Harbor (318 ft) 20 mph 0313 PM 10/21
1 WNW Waller (340 ft) 20 mph 0410 PM 10/21

... West slopes north Cascades and passes...
Mount Baker (5000 ft) 52 mph 0400 PM 10/21
4 E Nooksack (3406 ft) 38 mph 0309 am 10/22
2 N Glacier (3485 ft) 33 mph 0228 am 10/22

... West slopes north central Cascades and passes...
5 ENE Cedar Falls (1580 ft) 24 mph 0307 am 10/22
2 ESE Darrington (3350 ft) 20 mph 0728 am 10/22

... West slopes south central Cascades and passes...
3 SSW Crystal Mountain 28 mph 0200 am 10/22
4 se Greenwater (2404 ft) 21 mph 0200 am 10/22

... Western Skagit County...
2 WNW Anacortes (229 ft) 44 mph 0218 am 10/22
4 ENE swinomish Village (8 ft) 35 mph 0210 PM 10/21
Anacortes Ferry dock (33 ft) 32 mph(s) 0215 am 10/22
Burlington/Mount Vernon 30 mph 0215 PM 10/21
1 NNE Allen (98 ft) 27 mph 0228 PM 10/21
2 W Sedro-Woolley (78 ft) 25 mph(s) 0155 am 10/22
3 NNE Anacortes (895 ft) 24 mph 0241 am 10/22

... Western Strait of Juan de Fuca...
5 SSE Clallam Bay (180 ft) 28 mph 0600 PM 10/21

... Western Whatcom County...
1 NW Ferndale (105 ft) 62 mph 0136 am 10/22
6 W Marietta (9 ft) 59 mph 1114 PM 10/21
Bellingham Intl ap (158 ft) 49 mph(p) 1134 PM 10/21
4 ESE Birch Bay (164 ft) 45 mph 1153 PM 10/21
Blaine (55 ft) 42 mph 0126 am 10/22
2 WNW Ferndale (351 ft) 40 mph 0126 am 10/22
2 ENE Lynden (124 ft) 39 mph 0227 am 10/22
3 WSW Sudden Valley (581 ft) 37 mph 0310 am 10/22
Blaine 36 mph 1210 am 10/22
4 SSW Lynden (89 ft) 36 mph 0210 am 10/22
1 ESE Bellingham (600 ft) 35 mph 0253 am 10/22
7 WSW Marietta (163 ft) 35 mph 1050 PM 10/21
3 NNW Ferndale (62 ft) 30 mph 1103 PM 10/21
3 SW Bellingham (184 ft) 29 mph 1243 am 10/22
4 NE Nooksack (36 ft) 28 mph 0510 PM 10/21
Bellingham (100 ft) 26 mph 0854 PM 10/21
3 WSW Lawrence (232 ft) 26 mph 0107 am 10/22
2 WNW Ferndale (338 ft) 23 mph(s) 1159 PM 10/21
3 SSW Everson (171 ft) 21 mph 0142 PM 10/21

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: Strawberry Hill, Tacoma, WA

Updated: 5:37 PM PDT

Temperature: 55.5 °F Dew Point: 54 °F Humidity: 94% Wind: SSE at 9.2 mph Pressure: 29.65 in Hourly Precipitation: 0.04 in Graphs

Location: Pierce County EOC, Tacoma, WA

Updated: 5:36 PM PDT

Temperature: 57.2 °F Dew Point: 54 °F Humidity: 88% Wind: South at 9.0 mph Pressure: 29.58 in Hourly Precipitation: 0.04 in Graphs

Location: Central Tacoma, Tacoma, WA

Updated: 5:34 PM PDT

Temperature: 55.9 °F Dew Point: 54 °F Humidity: 93% Wind: SSE at 6.0 mph Pressure: 29.60 in Hourly Precipitation: 0.00 in Graphs

Location: Proctor District, Tacoma, WA

Updated: 5:36 PM PDT

Temperature: 55.8 °F Dew Point: 56 °F Humidity: 99% Wind: East at 2.2 mph Pressure: 29.27 in Hourly Precipitation: 0.06 in Graphs

Location: North Tacoma, Tacoma, WA

Updated: 5:35 PM PDT

Temperature: 54.9 °F Dew Point: 54 °F Humidity: 95% Wind: South at 3.0 mph Pressure: 29.57 in Hourly Precipitation: 0.04 in Graphs

Location: Jefferson Park/No. 8th & Stevens, Tacoma, WA

Updated: 5:37 PM PDT

Temperature: 55.7 °F Dew Point: 55 °F Humidity: 96% Wind: SE at 5.0 mph Pressure: 29.55 in Hourly Precipitation: 0.00 in Graphs

Location: Snake Lake Watershed, Tacoma, WA

Updated: 4:58 PM PDT

Temperature: 54.9 °F Dew Point: 55 °F Humidity: 99% Wind: South at 1.1 mph Pressure: 29.45 in Hourly Precipitation: - Graphs

Location: South Tacoma, Tacoma, WA

Updated: 5:37 PM PDT

Temperature: 53.8 °F Dew Point: 48 °F Humidity: 82% Wind: SSE at 6.5 mph Pressure: 29.60 in Hourly Precipitation: 0.05 in Graphs

Location: PRS Group, Inc., Tacoma, WA

Updated: 5:30 PM PDT

Temperature: 57.0 °F Dew Point: 52 °F Humidity: 85% Wind: ESE at 10.0 mph Pressure: 29.52 in Hourly Precipitation: 0.00 in Graphs

Location: Gratzer Rd., Tacoma, WA

Updated: 5:36 PM PDT

Temperature: 55.4 °F Dew Point: 55 °F Humidity: 98% Wind: SE at 3.2 mph Pressure: 29.58 in Hourly Precipitation: 0.03 in Graphs

Location: North End, Tacoma, WA

Updated: 5:36 PM PDT

Temperature: 55.6 °F Dew Point: 55 °F Humidity: 99% Wind: Calm Pressure: 29.21 in Hourly Precipitation: 0.00 in Graphs

Location: Browns Point, Tacoma, WA

Updated: 5:36 PM PDT

Temperature: 56.9 °F Dew Point: 54 °F Humidity: 90% Wind: ESE at 10.0 mph Pressure: 29.56 in Hourly Precipitation: 0.06 in Graphs

Location: Cascade, University Place, WA

Updated: 5:36 PM PDT

Temperature: 56.7 °F Dew Point: 56 °F Humidity: 96% Wind: Calm Pressure: 29.09 in Hourly Precipitation: 0.00 in Graphs

Location: Alderdale, Federal Way, WA

Updated: 5:36 PM PDT

Temperature: 55.1 °F Dew Point: 52 °F Humidity: 91% Wind: South at 1.8 mph Pressure: 29.27 in Hourly Precipitation: 0.04 in Graphs

Location: S. 19th & Bridgeport, University Place, WA

Updated: 5:36 PM PDT

Temperature: 54.3 °F Dew Point: 54 °F Humidity: 99% Wind: South at 1.1 mph Pressure: 29.25 in Hourly Precipitation: 0.05 in Graphs

Location: Point Ruston, Ruston, WA

Updated: 5:36 PM PDT

Temperature: 57.2 °F Dew Point: 55 °F Humidity: 92% Wind: SSE at 5.4 mph Pressure: 29.62 in Hourly Precipitation: 0.00 in Graphs

Location: Tacoma, WA

Updated: 5:36 PM PDT

Temperature: 55.4 °F Dew Point: 54 °F Humidity: 94% Wind: SE at 7.0 mph Pressure: 29.57 in Hourly Precipitation: 0.04 in Graphs

Location: MesoWest S END NEIGHBORHOOD CENTER WA US WAAQ, Tacoma, WA

Updated: 4:00 PM PDT

Temperature: 55 °F Dew Point: 53 °F Humidity: 93% Wind: ESE at 2 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: 30th St West, University Place, WA

Updated: 5:36 PM PDT

Temperature: 56.9 °F Dew Point: 53 °F Humidity: 87% Wind: SW at 1.1 mph Pressure: 29.44 in Hourly Precipitation: 0.04 in Graphs

Location: 1 Mile SW of Decatur High School, Federal Way, WA

Updated: 5:36 PM PDT

Temperature: 55.0 °F Dew Point: 55 °F Humidity: 100% Wind: East at 4.9 mph Pressure: 29.35 in Hourly Precipitation: 0.04 in Graphs

Location: Salmon Beach, Tacoma, WA

Updated: 5:36 PM PDT

Temperature: 55.4 °F Dew Point: 52 °F Humidity: 90% Wind: SE at 2.0 mph Pressure: 29.58 in Hourly Precipitation: 0.06 in Graphs

Location: Alderbrook, Federal Way, WA

Updated: 5:35 PM PDT

Temperature: 54.9 °F Dew Point: 53 °F Humidity: 93% Wind: SSW at 5.0 mph Pressure: 29.58 in Hourly Precipitation: 0.05 in Graphs

Location: City Hall, Federal Way, WA

Updated: 5:35 PM PDT

Temperature: 54.3 °F Dew Point: 52 °F Humidity: 93% Wind: SSW at 1.0 mph Pressure: 29.50 in Hourly Precipitation: 0.00 in Graphs

Location: Highridge, Gig Harbor, WA

Updated: 5:36 PM PDT

Temperature: 54.5 °F Dew Point: 54 °F Humidity: 97% Wind: Calm Pressure: 29.58 in Hourly Precipitation: 0.06 in Graphs

Location: central, Lakewood, WA

Updated: 5:36 PM PDT

Temperature: 55.7 °F Dew Point: 54 °F Humidity: 95% Wind: South at 7.0 mph Pressure: 29.61 in Hourly Precipitation: 0.00 in Graphs

Location: Marine View Estates, Federal Way, WA

Updated: 5:36 PM PDT

Temperature: 53.0 °F Dew Point: -46 °F Humidity: - Wind: ENE at 3.0 mph Pressure: 30.03 in Hourly Precipitation: 0.06 in Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...corrected 
National Weather Service Seattle Washington 
352 PM PDT Wednesday Oct 22 2014 


Corrected minor typo in the second paragraph of the marine segment. 


Synopsis...disturbances moving around an upper trough offshore will 
continue through Thursday. The air mass is unstable...so there will 
be a chance of thunderstorms on the coast tonight and throughout the 
area on Thursday. Shower activity will diminish Thursday night and 
Friday morning. While it will remain rather cloudy Friday 
afternoon...a brief and weak ridge of high pressure aloft combined 
with low level offshore flow will give drier weather. A low pressure 
system developing off the Oregon coast will move across the area 
late Saturday or Saturday night. Active weather will continue into 
next week. 


&& 


Short term...satellite imagery and radars show the front that moved 
across the area early this morning is now nearly stationary from the 
Cascades into northwestern Oregon. A broad and rather deep upper 
level trough is centered around 145w longitude. Upper level 
disturbances are rotating around this trough and are riding 
northeastward along the front across the Pacific northwest. The 
first disturbance enhanced precipitation today as it moved northeast 
across the area. The GFS shows another wave now over the Oregon 
offshore waters shifting NE across the area tonight. The axis of the 
heaviest precipitation amounts will likely be shifted about 50 to 
100 miles farther to the south and east of where the rain was seen 
today. Yet another disturbance...this one now seen as what appears 
to be a developing instant occlusion north of the front near 
135w...appears that it will move across the area on Thursday. 


Thunderstorm activity that was seen earlier today over the coastal 
waters has mainly moved into Vancouver Island...but some isolated 
lightning strikes can still be seen over the offshore waters. Some 
thunderstorm activity can be expected over the coastal waters 
tonight and there is a chance that a few lightning strikes will be 
seen along the coast and in the western Olympic Mountains. The air 
mass is expected to be a bit more unstable over the interior 
Thursday afternoon as the instant occlusion moves NE across the 
area. Lifted index values fall to around -2.1 and convective available potential energy rise to 
about 500 j/kg in the Seattle area 21z Thursday per the nam12 and the GFS 
is slightly more unstable. Showers with a chance of thunderstorms 
will be in the forecast for the entire area on Thursday. 


Showers diminish Thursday night and come to an end Friday morning across 
much of the area as a deep low develops off the northern California 
and southern Oregon offshore waters. This low appears to be 
developing in response to a system dropping southeast from the Bering Sea 
as it phases somewhat with the remains of Ana northwest of Hawaii. The 
latest nam12 and GFS solutions show the low reaching its maximum 
depth at around 985 mb off the central Oregon coast while the 
Canadian and European model (ecmwf) solutions are 5-10 mb deeper. Offshore flow and 
short wave ridging aloft may bring a rather dry period...albeit 
cloudy...to the area from late Friday morning into early Friday 
evening. 


The low quickly becomes vertically stacked in all of the models off 
the Oregon coast...then it matures...moves northeast...and gradually 
decays as it moves NE across our area Sat evening. Depending on the 
depth and track of the low...it may get windy over portions of 
western Washington later Saturday into Saturday night. But with the 
low decaying and wind field expanding...expect the threat of high 
wind in the forecast area to be below 25 percent. Some model 
solutions...like the 12z Canadian solution...keep the track of the 
low south of the forecast area. This is not unreasonable given the 
general split flow pattern being seen over the western U.S. Of late. 


Temperatures will be seasonable for this time of year and it will 
remain rather cloudy as we go through the next several days. Albrecht 


Long term...showers can be expected behind Saturday nights low 
pressure system on Sunday. Beyond that time...models are having a 
tough time with the details. The European model (ecmwf) has a storm track to the 
north of the area with frontal passages here through the middle of 
next week. The storm track on the GFS is just to the south of the 
area...still a wet one for western Washington but less windy. The 
Canadian solution is closer to the European model (ecmwf). In any case the pattern 
will remain active. Albrecht 


&& 


Hydrology...a Flood Warning remains in effect for the Skokomish 
River in Mason County. The skokomish at Potlatch crested around 17.2 
feet at noon today. It is expected to fall below flood stage tonight 
and gradually recede Thursday through Friday. 


Wet weather is expected to continue through the upcoming week. But 
rainfall amounts are not expected to drive any rivers above flood 
stage. Albrecht 


&& 


Aviation...a slow-moving cold front over the interior is expected to be 
east of the Cascades by 0600 UTC Thursday. It now appears that the unstable 
air mass will remain over the coastal waters through tonight. 
Meanwhile...strong SW flow aloft will continue over the region through 
tonight. The low level flow will remain southerly. 


Expect areas of ceilings and visibilities in the 1-3k feet and 3-5sm range... 
respectively...through tonight. However heavy precipitation will result in 
occasional IFR cigs/vsbys. 


Ksea...ceilings have lifted into the VFR category but occasionally ceilings in the 
2-3k feet range can be expected through part of tonight. Ceilings near 2k feet 
may become predominant late tonight or early Thursday. 


&& 


Marine... 
a 1001 mb low developed over the Oregon coastal waters this 
afternoon and this has slowed down the cold front over the Puget Sound 
sound region. The cold front should be east of the Cascades by late 
this evening. Will need to watch for the possibility of a burst of 
southerly winds near 25 knots over the waters from Point Grenville 
to Cape Shoalwater out to 60 nm late this afternoon through this 
evening as the low moves off to the NE. 


Beyond this afternoon...numerical weather models were not in good 
agreement with the track...timing...and strength of the low that is 
expected the end of this week. Depending on which model is 
correct...this system could produce anywhere from high end gale or 
low end storm force winds over parts of the area to inconsequential 
wind speeds. The forecast reflects the consensus. Thus anticipate 
gale force winds over much of the waters Saturday night. 


&& 


Sew watches/warnings/advisories... 
Washington...Flood Warning in effect for the Skokomish River in Mason 
County. 


Pz...Small Craft Advisory in effect for hazardous in effect for 
the coastal waters and West Entrance to the Strait of Juan Delaware 
fuca. 
Small Craft Advisory for rough bar in effect until 6 am 
Thursday 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 



National Weather Service Glossary of Abbreviations

Non-Expanded Version (with abbreviations)

Powered by the Weather Underground, Inc.