George BM

It was a strange wavy/jiggly feeling like adrenaline mixed with vodka and corona shaking it's way through my body... almost as if an anniversary of a wavy/jiggly event hit me.

What the-- I'm not the only one who felt that right?!

There was mention of a 59mph wind gust in Smithsburg in an earlier severe thunderstorm warning issued by the NWS in Sterling, VA.

1630z update put us in a SLGT risk for today. ...Northern VA and vicinity this afternoon... A small thunderstorm cluster and diffuse MCV will move eastward from the eastern WV Panhandle across northern VA/MD this afternoon. Surface heating in advance of this minor wave will contribute to moderate buoyancy (MLCAPE near 2000 J/kg), and some loose clustering of storms is expected this afternoon. Steep low-level lapse rates and DCAPE near 1000 J/kg will favor occasional downbursts with some potential for wind damage.

I'm surrounded in Herndon.

Were those the standard 16.9oz bottles? If so, then that's quite a bit of fluid downed in half a day.

IAD just got 0.23" of rain in one minute between 3:29pm and 3:30pm edt!

weather.us

No kidding! It's boderline disco at times.

The College of Dupage site has been down for days it seems...shame.

We DO have it now.

Low-key watching Tuesday for severe potential.

I've been low-key watching Tuesday myself fo- oh wait... you're talking about heat... nevermind.

Bookmarked. Nice find. 79/59 at IAD.

Feel the tropics. Taste the tropics.

72/68. Starting out in the mid 60's/low 70's tomorrow morning.

There are some left-movers that are trying to move northeast from central Virginia. They're worth watching especially from I-95 and southeastward where there's been more sunshine.

SEL7 0-CWZ000-010100- URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 547 NWS Storm Prediction Center Norman OK 115 PM EDT Wed Jul 31 2019 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Connecticut District Of Columbia Delaware Massachusetts Eastern Maryland New Jersey Southeast New York Southeast Pennsylvania Rhode Island Northeast Virginia Coastal Waters * Effective this Wednesday afternoon and evening from 115 PM until 900 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible SUMMARY...Scattered thunderstorms are expected to develop this afternoon within a warm/unstable air mass. A few clusters of severe storms are expected to form, capable of locally damaging wind gusts. The severe thunderstorm watch area is approximately along and 75 statute miles east and west of a line from 45 miles south southeast of Washington DC to 25 miles north northwest of Boston MA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 25030. ...Hart

Current dewpoint at IAD is 58F.

7/29/2019 highs: IAD: 96F BWI: 96F DCA: 94F

I dreamt that there was a supercell thundersnow storm the night before last and that people were getting blown around like they were leaves when the tornado blew through the campus.

This link explains it in detail. https://www.spc.noaa.gov/exper/mesoanalysis/help/help_lllr.html

Well I'm certainly no meteorologist but I do know somethings about meteorology so here it goes. This past Monday, as you probably know, was the last day of the heatwave in the region. Very hot surface temperatures usually correspond with very steep low-level lapse rates which can help with higher winds aloft being mixed down to the ground say with, for example, a line of thunderstorms . Now this past Monday NJ had an area of 3,000+J/kg of mlcape (Mixed-layer convective available potential energy), which is fairly high (higher than usual), due to the high heat and humidity (surface temps in the 90's and dewpoints in the 70's). With you being in central NJ that means your area missed the previous days storms. This is important because it means that nothing was able to stabilize and moisten the atmosphere. That means that there was some drier air aloft (10,000-20,000ft) for Monday afternoon in your area. So, when strong heating of a moist boundary-layer (the layer below the cumulus clouds) helped cumulus clouds grow into cumulonimbus clouds the water droplets evaporated in the dry air which causes it to cool and sink creating a downdraft. On Monday afternoon there were also some stronger winds aloft around the 700-600mb layer (10,000-15,000ft above the ground) of around 35-40 kts. That can help storm clusters generate a cold-pool and with warm/moist air being forced upwards ahead of the storms and the rain cooled air (the cold-pool) sinking as they move through this creates a feedback loop allowing the storms to accelerate forward to 35-40kts (40-46mph) or faster especially if instability is strong (which it was on Monday). The storms on Monday blasted through your area at 50-60 mph and with the steep low-level lapse rates in place a lot of that wind energy was able to reach the ground. The result is widespread 50-60 mph wind gusts. However, with stronger downdrafts embedded within the line of storms they could've added 15-20+mph to the 50-60 mph winds in localized areas. This is my two cents on Monday's storms in your area. I'm no meteorologist or expert for that matter and I probably look like a total fool to those experts. Oh well, I live and I learn and boy do I have a lot to learn in this field. I also apologize for the horrible grammar. I hope you were able to understand something through all that. Hopefully an actual expert can clarify what the heck I just tried to say lol.

Currently 68F at IAD. It's bitterly cold out there. Bundle up in warm-layers today.

Probably because you're in Carolina.