Emerald City Weather Blog

Official Seattle-Area Forecast Analysis from Meteorologist Scott Sistek

Historic Southwest heat wave has shades of record-blasting June 2021 Northwest event 500 mb heights chart showing massive heat anomaly over the Desert Southwest this week

500 mb heights chart showing massive heat anomaly over the Desert Southwest this week

Historic Southwest heat wave has shades of record-blasting June 2021 Northwest event

Scott Sistek March 17, 2026

You may have heard that the Southwestern U.S. is undergoing a historic heat wave this week that...

Flood Watches issued in Cascades as multi-day Pineapple Express soaks Seattle GOES-18 Satellite image on March 17, 2026 showing Pineapple Express plume stretching from Hawaii into the Pacific Northwest.

GOES-18 Satellite image on March 17, 2026 showing Pineapple Express plume stretching from Hawaii into the Pacific Northwest.

Flood Watches issued in Cascades as multi-day Pineapple Express soaks Seattle

Scott Sistek March 17, 2026

A multiple day Pineapple Express-type atmospheric river is here. And while it’s been shifting a little north...

Pineapple Express may last for days in Seattle next week, sapping fresh mountain snowpack GOES 18 satellite image from March 14 showing large plume of moisture starting from near Hawaii and spanning a large swath of the Pacific that will gradually take aim at B.C. and then Western Washington next week.

GOES 18 satellite image from March 14 showing large plume of moisture starting from near Hawaii and spanning a large swath of the Pacific that will gradually take aim at B.C. and then Western Washington next week.

Pineapple Express may last for days in Seattle next week, sapping fresh mountain snowpack

Scott Sistek March 14, 2026

It’s already been a pretty notable week of weather here — Seattle just had the windiest (52...

Atmospheric river brings record-setting March snowfall to Seattle Snow falls at Sea-Tac Airport on March 13, 2026. (Photo courtesy: Sea-Tac Airport)

Snow falls at Sea-Tac Airport on March 13, 2026. (Photo courtesy: Sea-Tac Airport)

Atmospheric river brings record-setting March snowfall to Seattle

Scott Sistek March 13, 2026

I have to say I’m impressed. Usually these are the types of fringey snow patterns that totally...

Atmospheric river may bring some slushy snow to Seattle and Puget Sound region Friday HRRR 3-hour snowfall map for Friday early morning. (NOTE: These calculations do not factor in warm ground temps that would melt much of this snow on impact but gives an idea where snowfall may be the heaviest)

HRRR 3-hour snowfall map for Friday early morning. (NOTE: These calculations do not factor in warm ground temps that would melt much of this snow on impact but gives an idea where snowfall may be the heaviest)

Atmospheric river may bring some slushy snow to Seattle and Puget Sound region Friday

Scott Sistek March 12, 2026

So, about that Friday the 13th… To say this week’s weather has been wacky is to sell...

134 mph gust reported atop Alpental Summit while Seattle gets its strongest gust in months GOES-18 Satellite image showing large slug of moisture moving across the Pacific Ocean via strong jet stream and heading toward the Pacific NW.

GOES-18 Satellite image showing large slug of moisture moving across the Pacific Ocean via strong jet stream and heading toward the Pacific NW.

134 mph gust reported atop Alpental Summit while Seattle gets its strongest gust in months

Scott Sistek March 11, 2026

It’s a little late in the year for a windstorm, but don’t tell Mother Nature, who unleashed...

Windstorm looms for Western Washington lowlands with blizzard conditions in Cascades ECMWF predicted peak wind gusts for Wednesday

ECMWF predicted peak wind gusts for Wednesday

Windstorm looms for Western Washington lowlands with blizzard conditions in Cascades

Scott Sistek March 10, 2026

It’s been a while since a good storm has pushed through Western Washington, but that wait ends...

Seattle active forecast for the next 2 weeks features snow, rain, wind, and even some lightning GOES-18 satellite image from Sunday March 8 (NOAA / CIRA / RAAM-B)

GOES-18 satellite image from Sunday March 8 (NOAA / CIRA / RAAM-B)

Seattle active forecast for the next 2 weeks features snow, rain, wind, and even some lightning

Scott Sistek March 8, 2026

The March lion was fashionably late, but now that it’s here, I don’t think the lamb is...

March Madness: Several feet of snow coming to the Cascades Jet Stream Map

Jet Stream Map

March Madness: Several feet of snow coming to the Cascades

Scott Sistek March 6, 2026

(TL;DR: LOTS OF MOUNTAIN SNOW! And…maybe some snowflake sightings in the lowlands. How much? That’s all you...

Sight for sore eyes?: Blue finally appears on Seattle’s temperature outlook NOAA 6-10 day temperature outlook showing cooler than average temps expected in Washington between March 10-14.

NOAA 6-10 day temperature outlook showing cooler than average temps expected in Washington between March 10-14.

Sight for sore eyes?: Blue finally appears on Seattle’s temperature outlook

Scott Sistek March 4, 2026

Blue and green haven’t looked this good in tandem since the Super Bowl. It’s been a looooong...

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