George BM

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.

IAD has hit 93F.

I'm watching the activity that's currently in southern West Virginia.

IAD hits 100F at 2:59pm edt Sunday, July 21, 2019.

110F with a 140+F heat index with an epic severe MCS to end it or bust.

@yoda Psssssst.... Monday afternoon on the 12z 3knam. We abscond immediately!

@wxdude64 Day one. If your in the area hang in there my friend.

@WxWatcher007 What would you say were the peak wind gusts that you experienced chasing Barry?

Severe Thunderstorm Watch incoming.

IAD is 95F right now. http://iadasos.org/condensed.html

IAD now 93F as of 11:02am edt, Wednesday, July 17, 2019

https://twitter.com/islivingston/status/1151137077431422976

I'm low-key watching the post-Barry remnants period. While areas to the north are definitely favored a ring of fire type pattern looks fairly likely to make an appearance.

Happy Birthday Mr. Reaper!

Flood Watch National Weather Service Baltimore MD/Washington DC 1123 AM EDT Thu Jul 4 2019 DCZ001-MDZ011-013-014-503>506-VAZ052>054-506-042330- /O.NEW.KLWX.FF.A.0006.190704T1700Z-190705T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ District of Columbia-Southern Baltimore-Prince Georges- Anne Arundel-Northwest Montgomery- Central and Southeast Montgomery-Northwest Howard- Central and Southeast Howard- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Eastern Loudoun- Including the cities of Washington, Baltimore, Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt, Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate, Severna Park, Arnold, Odenton, Germantown, Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, Falls Church, Leesburg, Ashburn, and Sterling 1123 AM EDT Thu Jul 4 2019 ...FLASH FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING... The National Weather Service in Sterling Virginia has issued a * Flash Flood Watch for portions of Maryland, The District of Columbia, and northern Virginia, including the following areas, in Maryland, Anne Arundel, Central and Southeast Howard, Central and Southeast Montgomery, Northwest Howard, Northwest Montgomery, Prince Georges, and Southern Baltimore. The District of Columbia. In northern Virginia, Arlington/Falls Church/Alexandria, Eastern Loudoun, Fairfax, and Prince William/Manassas/Manassas Park. * Until 8 PM EDT this evening * Slow moving showers and thunderstorms are expected to develop after 1 PM this afternoon before diminishing early this evening. Torrential rainfall rates may lead to totals exceeding 2 inches in a short period of time. This may cause flash flooding of small streams and other poor drainage urban areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$

My friends my friends welcome to the club!