Mesoscale Discussion 0023
NWS Storm Prediction Center Norman OK
0208 PM CST Sun Jan 24 2021
Areas affected...northern Texas...far southern Oklahoma and
southwest Arkansas
Concerning...Severe potential...Watch unlikely
Valid 242008Z - 242245Z
Probability of Watch Issuance...5 percent
SUMMARY...A storm or two may produce marginally severe hail later
today, mainly over northeast Texas.
DISCUSSION...A diffuse warm front currently exists over north TX and
into northern LA, with warm advection occurring just off the surface
ahead of the upper trough. This is occurring beneath modestly steep
midlevel lapse rates, with plenty of strong southwest flow aloft to
elongate hodographs.
Warm air advection and lift will increase along the Red River
through 00Z with 850 mb winds increasing to over 30 kt. Forecast
soundings show the increasing theta-e around 850 mb will lead to
better instability, although still not particularly strong. Given
the strong winds aloft and deep layer shear, a few of the storms
that form this afternoon may eventually consolidate into marginally
severe hail cores.
..Jewell/Hart.. 01/24/2021
...Please see
www.spc.noaa.gov for graphic product...
ATTN...WFO...LZK...SHV...TSA...FWD...OUN...
LAT...LON 34329746 34609524 34119371 33669363 32939403 32489516
32489698 32589732 33119785 33679824 34079809 34329746