George BM

IAD w/ a tropical hourly ob of 84F w/a 78F dewpoint.

High Pwats + decent CAPE = torrential lightning w/ those currently warned storms.

Severe Thunderstorm Watch out until 7pm from roughly US-15 east.

Unusually warm mist here. 75/75 currently at IAD. Some windows are fogged up.

That's right Aldie man. Use your power to get us another major volcanic eruption... preferably at least a high-end VEI 6/ low-end VEI 7. I'll be checking the news throughout the evening.

Midnight thunderstorm dumped over 1.5" of rain here. 2.05" for the weekend. 3.65" for June so far.

Really noticed the hazy smoke on the drive from Burtonsville, MD back to Herndon, VA this evening.

Yeah. That cell definitely has a little bit of a supercell appearance on radar.

The end of the 18z HRRR for Saturday afternoon DOES look a little interesting (yes fantasy range HRRR, I know... plus, verbatim, weak MLLRs and a saturated atmosphere in general limiting DCAPE). ETA: Others CAMs show hints of us being backdoored by a cool front by late Saturday.

Yeap. Line just developed from just north of the Capitol Beltway WSW into The Plains, VA along I-66.

17/8/4 ACE: 140

It's funny. Since the summer of 2023 I've had three months where I measured 7 or more inches of rain in a month (September 2023, August 2024 and May 2025)…. You of all posters beat my monthly rainfall totals for every one of those 3 months!

DCA: 100F IAD: 99F BWI: 101F RIC: 101F

17 years ago.

I didn't see this posted but the recent cool period had some cool stats (no pun intended).

Lol. I'm out of the summer touch at the moment. 84/62 is kicking my butt for some reason... probably due to the extended cool period. I'm screwed aren't I.

Third morning in a row that IAD gets down into the 40s. 47F for the low this AM.

IAD got down to 44F and 43F yesterday and today respectively.

Slightly older. One year until I enter the fourth decade on this sphere.

Welcome to Meteorological Summer and the brightest month of the year! Summer weather lovers rejoice. Cold weather lovers don't fret. Just three weeks until the days start getting shorter!

Baby Yoda: I mean it's no surprise when you see the kind of CAPE and shear that the 18z special sounding showed. Also from the latest meso discussion from SPC: "... A well-established cold pool and rear-inflow jet have accelerated the forward speed of the MCS to over 60kts. The extreme instability and moist airmass coupled with the large downdraft CAPE values will further increase the wind threat with corridors of 100+ mph wind gusts associated with embedded microbursts/macrobursts..." SnowingOverHere: Yeah. I better pack it up now. The tornado is probably embedded in that wall of rain that's protruding ahead of the main rain curtain. The greenage is unreal.

Correct! And thank you.

0.73" for the day. Up to 7.38" for the month of May.

I've finally reached the great egg.

Ha... I was wondering whether they meant to issue it until 6am TOMORROW morning and NOT Sunday morning as that would make more sense looking at the models. They've been very busy at the office this evening. URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 920 PM EDT Fri May 30 2025 DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ038>040-051-053- 054-501-502-505-506-526-527-310930- /O.EXT.KLWX.WI.Y.0016.250531T0400Z-250531T1000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Greene-Madison-Rappahannock- Culpeper-Fairfax-Arlington/Falls Church/Alexandria-Northern Fauquier-Southern Fauquier-Western Loudoun-Eastern Loudoun- Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 920 PM EDT Fri May 30 2025 ...WIND ADVISORY NOW IN EFFECT UNTIL 6 AM EDT SATURDAY... * WHAT...West winds 15 to 30 mph with gusts up to 50 mph. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. * WHEN...Until 6 AM EDT Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. && $$ DHOF