The Washington Post

PM Update: Late spring-like weather continues; warm Wednesday ahead

5:00 p.m. update: A few pop-up showers and storms are developing in the region. These will be hit-or-miss, but as indicated below, could produce brief downpours, hail, and gusty winds. They should dissipate around sunset.

From 4 p.m.: Afternoon temperatures today - up to around 80 - resembled what we typically experience around June 1. And there’s plenty more to come. There’s an outside chance of a thunderstorm into the evening as a little front rolls by - but the air behind it is no cooler, just a bit drier. So Wednesday should be just delightful.

Through Tonight: Radar is quiet right now, but there’s a 20-30% chance isolated-scattered showers and thunderstorms fire up. If they do, they may develop quickly and with little notice. Any storms could contain some hail and gusty winds. Otherwise, partly cloudy skies early on gradually clear. There should be little trouble viewing the Venus-Jupiter conjunction in the early evening. Overnight lows are mild, ranging from the mid-40s in the cooler suburbs to the low-to-mid 50s downtown.

Wednesday: If you can stand the surging pollen count, this may be the nicest day of the year so far. With a light breeze from the northwest (5 to 10 mph), the air is dry and fresh - but comfortably warm. Highs reach the mid-to-upper 70s under brilliant sunshine and crystal blue skies. With the lower humidity, it won’t feel quite as warm as today - but temperatures will be about the same.

See Matt Rogers’ forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter. For related traffic news, check out Dr. Gridlock.

Pollen: The U.S. Army Allergen Lab indicates the tree pollen count has risen to 129 grains/cubic meter, which is HIGH. That’s up from yesterday’s MODERATE 33 grains/cubic meter count.

Historic snow for Oregon coast : While unseasonably warm weather covers the eastern two-thirds of the nation, the Pacific Northwest has been stormy and cold. Steve Pierce, weather blogger for the Columbian, describes the snowy scene in Oregon: Many residents along the coastline of Oregon awoke Tuesday morning to no power, downed trees, closed roads and as much as 8” of snow in a rare one-two punch. This storm will likely go down in the record books as one of the largest coastal snowstorms in the month of March ever recorded at some locations.

Jason is the Washington Post’s weather editor and Capital Weather Gang's chief meteorologist. He earned a master's degree in atmospheric science, and spent 10 years as a climate change science analyst for the U.S. government. He holds the Digital Seal of Approval from the National Weather Association.


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