
Mesoscale Discussion 0268
NWS Storm Prediction Center Norman OK
0555 PM CDT Thu Mar 17 2022
Areas affected...North TX
Concerning...Severe Thunderstorm Watch 48...
Valid 172255Z - 180030Z
The severe weather threat for Severe Thunderstorm Watch 48
continues.
SUMMARY...A few strong to severe thunderstorms may develop across
North TX over the next several hours.
DISCUSSION...Recent visible satellite imagery shows increasingly
agitated cumulus along the dryline moving into north TX. Forecast
soundings in much of this region continue to show warm temperatures
aloft, supporting convective inhibition. Most recent mesoanalysis
estimates MLCIN is around -25 to -50 J/kg. Recent ACARS soundings
from DAL also continue to show capping, with MLCIN around -30 to -35
J/kg. Even so, convergence along the boundary is quite strong and
moisture advection continue in the downstream environment. Dewpoints
have increased along the I-35 corridor 3-4 degrees over the past 3
hours.
Given these improving thermodynamics and persistent low-level
convergence, the potential exists for a few deeper, more sustained
updrafts. Wind profiles show strong low-level veering but a
pronounced weakness in the mid-levels. As a result, storm
organization will likely be somewhat limited. Even so, a few strong
to severe storms are possible and watch expansion southward may need
to be considered soon.
..Mosier.. 03/17/2022
...Please see
http://www.spc.noaa.gov for graphic product...
ATTN...WFO...FWD...OUN...
Winter time post are almost exclusively focused on the DFW area.