* Heat advisory from midday to eight p.m. right now and Friday *
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By Tonight: Thunderstorms — a number of of which might flip extreme with damaging wind, harmful lightning and flooding downpours — might not end earlier than fireworks on the Nationwide Mall. It’s a detailed name on timing tonight, with a number of rounds of potential storms, however nearly all exercise needs to be carried out by 11 p.m. Rain gear and plan-B shelter choices close by are inspired. Discover higher element on this extreme climate risk under.
An elevated threat of warmth sickness stays till 8 p.m. for these outdoor, with warmth index values (temperatures plus humidity) solely slowly lowering towards the mid-90s. By dawn, the thermometer alone ought to sink to the higher 60s to mid-70s. Anticipate very soupy midsummer situations.
Tomorrow (Friday): It might really feel like 110 levels throughout the afternoon within the hottest and most humid spots. A couple of clouds needs to be round from doable early showers or storms. Breezes from the southwest grow to be extra noticeable because the midafternoon to nighttime bathe and storm possibilities arrive. The strongest storms might keep west of city. The thermometer tops out inside a number of levels of 95 earlier than dipping into the steamy 70s in a single day.
Extreme storm potential into tonight
We may even see a number of rounds of extreme storms this afternoon into tonight with damaging gusts over 57 mph, frequent lightning and flooding downpours. Let’s chronologically evaluate the “marginal” (1 out of 5) general extreme storm likelihood into tonight:
- What: Potential for a number of rounds of storms versus one definitive line or cluster
- Timing: 3 p.m. to 7:30 p.m. for the very best potential for extreme storms, with less-intense storms nonetheless doable into late night
- Threats: Damaging gusts over 57 mph (graphic above); a number of flooding downpours (graphic under) with slow-moving storms; and frequent, harmful lightning
- Geography: The movement of storms will usually be from west to east, most likely forming over mountains to our west earliest within the afternoon. Storms will transfer towards and east of D.C. into the night.
- Commentary: Whereas our extreme storm risk degree isn’t large and widespread, we’re flagging a bit extra vociferously than typical as a result of this vacation is once we are all way more more likely to be outdoors and susceptible to extreme climate.
