…SUMMARY…
A severe weather outbreak is possible across parts of the eastern
U.S. today with widespread damaging winds, locally destructive, and
isolated tornadoes as the greatest threats from the southern and
central Appalachians to the Mid-Atlantic States.
…Southeast to the Upper OH Valley to the Mid-Atlantic States…
A shortwave trough over the Lower OH Valley will advance across the
northern Appalachians by this evening. A pair of 500-mb speed maxima
from 55-65 kts are expected to be centered by late afternoon across
eastern KY/TN and southern WV into western VA/NC, and separately
over the Mid-South. Peak flow within an expansive 700-mb jet should
be centered between the 500-mb maxima across the TN Valley. A plume
of large potential buoyancy supported by high PW and steep mid-level
lapse rates, and centered over the Mid-South/TN Valley will expand
east-northeast towards the central/southern Appalachians with an
expansive swath of MLCAPE from 2000-3500 J/kg expected by peak
heating. The 12Z BNA sounding well-sampled this potentially volatile
environment.
www.spc.noaa.gov/products/outlook/day1otlk.html
All hands on deck! We have an upgrade to moderate risk with wind shear supportive of tornadoes from northeast TN to southern PA! Rare combination of instability and powerful kinematics. Stay tuned to watches and warnings. Live stream activated by noon pic.twitter.com/ZAqHh2pcVR
— Reed Timmer, PhD (@ReedTimmerAccu) August 7, 2023
BREAKING: The Washington D.C. area and much of the Mid-Atlantic will be in a very rare level 4 out of 5 RED zone risk. @fox5dc @MyRadarWX pic.twitter.com/UZk3N3Nm8F
— Matthew Cappucci (@MatthewCappucci) August 7, 2023
Scary fact I just read over on NWS chat. This is the first time DC has ever been placed in a 45% wind risk contour on a "Day 2" SPC outlook. The last time DC was in this risk zone at all was day 1, 10/31/19.
Take today's threat seriously. Updated outlooks in the next hour or two pic.twitter.com/9uCqLadCsS
— Mike Thomas (@MikeTFox5) August 7, 2023
JUST IN: DC area in Level 4 out of 5 risk for severe storms late this afternoon into the evening. This is very rare. We will have more details shortly but it is very important to pay attention to weather details today and have a way to receive storm warnings. pic.twitter.com/msE5zTM7ZH
— Capital Weather Gang (@capitalweather) August 7, 2023
LIVE update from Johnson City, TN ahead of BIG severe weather and #tornado potential. Target storm already identified to my west. We will be going live storm chase mode in 30 minutes or so. Stay weather aware today eastern US! pic.twitter.com/ITBmG1ljlA
— Reed Timmer, PhD (@ReedTimmerAccu) August 7, 2023
Tornado Warning including Parkersburg WV, Lubeck WV and Murphytown WV until 12:30 PM EDT pic.twitter.com/zyaW9VwBhd
— NWS Tornado (@NWStornado) August 7, 2023
A *very* strongly-worded statement from our friends at the National Weather Service warning of the possibility of an isolated strong tornado.
This is a day to really take seriously. pic.twitter.com/xGpXHZhr5J
— Matthew Cappucci (@MatthewCappucci) August 7, 2023
DC and Baltimore in the cross hairs
Get your everything ready
www.spc.noaa.gov/products/md/md1879.html
Ryan is chasin
Here’s Reed
h/t DOORBERT