Radar & lightning: Latest D.C. area radar shows movement of precipitation and lightning strikes over past two hours. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

7:50 p.m. Update: Thunderstorms converging in Montgomery County now have produced large hail and strong winds. A Severe Thunderstorm Warning is in effect until 8:30 p.m. for the storm moving east through western Montgomery County including over Poolesville. The other storm is tracking south through the county along and east of I-270.

From 5:15 p.m… Welcome back to summer in D.C., hope the weekend didn’t fool you too much! While we’ve been slow to add up 90-degree days thus far this summer, we picked up another today and should come out of this stretch more than doubling our (so far) annual total. If you noticed the air didn’t look too good, it was also our first Code Orange of the season, according to Clean Air Partners.

Through Tonight: Isolated showers and storms (some strong) are meandering this general direction from the northwest, though they should try to wane as we lose the heating of the day. Nonetheless, there’s a 30%-40% chance one impacts later, with best shots at any one spot likely to the north of town. After that, partly to mostly clear and humid with lows reaching the mid-60s to near 70.

Tomorrow (Tuesday): It’s another hot and humid day — probably a little more hot than today if you’re keeping score at home. Plan on highs in the near 90 to mid-90s range across the area under partly to mostly sunny skies. There’s an outside shot at a shower or storm late, but nothing major as it stands now.

See Jason Samenow’s 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.


Pilot day in Virginia on June 14. (Joseph Gruber via Flickr)

Pollen update: Grass pollen and mold spores are currently running high per local counts. Tree and weed pollen is low.

Coverage of twin tornadoes: The information about the twin tornadoes in Nebraska has been moved to this post: VIDEO: Twin tornadoes strike Nebraska, leave one dead