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PM Update: Our earliest heat wave since 2002 gives way to a cooler and sometimes rainy weekend

7:55 p.m. update: A line of showers has become a bit more energized than expected as it passes through. We’ll see some brief rain move through much of the area as a result. This activity will move through the immediate area over the next hour or so.

From 4:45 p.m…

We snagged another 90 in the city today, even with a bunch more clouds than recent days. This is the earliest we’ve hit 90-plus for three days in a row — a heat wave by local definition — since 2002. That year we did so a bit earlier, on April 16-18. For now, the 90s are done, and in their place we’ll see a lot more clouds and rain in the days ahead. Given the circumstances, we might also see fewer complaints than normal? Ahh, relief!

[After third straight 90-degree day, Washington notches first heat wave of 2018]

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Through tonight: Although it’s hard to rule out showers or storms this evening, I wouldn’t expect much of impressive locally — perhaps an isolated to scattered storm or a quick shower. If anything pops up, it could have some thunder and briefly heavy rain. Our rain odds do increase a bit tonight, but I think we stay drier than not overall. A line of storms approaching late should generally try to fall apart on approach.

View the current weather conditions at The Washington Post.

Tomorrow (Saturday): We continue to see our rain chances rise into Saturday. The distribution across the area may not be even, with the heavier and more consistent activity seemingly wanting to focus west of Interstate 95. With time, the whole area should see something of a soaking. Daytime temperatures are mainly in the mid-60s to near 70. The heaviest rain may come as we get through the evening and into the night. See Jason’s post for more details.

Sunday: Coming off rainy lows in the 50s, Sunday could still be rather wet as we get going. It’s more of a residual dampness than an ongoing rainstorm, although some showers or a drizzle seem likely in the morning and through midday. With time it all shuts off; we’ll perhaps see a few late breaks before sunset. Highs reach the 60s.

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

A moderate risk from the Storm Prediction Center over the Northeast isn’t too common — maybe a once a year or so event in the entire region. This early? Much less typical. Their severe-season peak is usually in the middle of summer. In this case, a very intense jet stream is coupling with a strengthening surface low to produce an unusually strong and early severe-weather threat for that region. A widespread wind damage threat is expected to materialize across the moderate risk zone. Additionally, a few tornadoes seem likely, as well.

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