Mesoscale Discussion 0397
NWS Storm Prediction Center Norman OK
0333 PM CDT Fri Apr 04 2025
Areas affected...Northeast TX...southeast OK...western AR
Concerning...Tornado Watch 113...114...
Valid 042033Z - 042200Z
The severe weather threat for Tornado Watch 113, 114 continues.
SUMMARY...Maturing supercells will pose an increasing tornado threat
this afternoon.
DISCUSSION...Multiple supercells have developed over the last hour
across northeast TX, in the immediate vicinity of a slow-moving cold
front that extends from southeast OK into central TX. The 18Z SHV
sounding is representative of the environment across the region,
with very rich low-level moisture, large to extreme MLCAPE,
deep-layer shear sufficient for supercells, and a rather strong
low-level jet.
A corridor of increasing short-term tornado threat is evident from
northeast TX into far southeast OK and western AR, where locally
backed surface winds are resulting in 0-1 km SRH of 150-250 m2/s2.
This combination of favorable buoyancy, boundary-layer moisture, and
relatively strong low-level shear/SRH will support an increasing
tornado threat with any sustained supercells, including significant
(EF2+) tornado potential. Large hail and damaging winds could also
accompany the strongest cells.
..Dean.. 04/04/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LZK...SHV...TSA...FWD...
LAT...LON 31889648 32739620 33549548 34629455 35499358 35179295
34369299 32779455 31879567 31889648
MOST PROBABLE PEAK TORNADO INTENSITY...120-150 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN
|