167
ACUS11 KWNS 232227
SWOMCD
SPC MCD 232226
OKZ000-240130-
MESOSCALE DISCUSSION 0508
NWS STORM PREDICTION CENTER NORMAN OK
0526 PM CDT THU APR 23 2026
AREAS AFFECTED...SOUTHWEST INTO SOUTH-CENTRAL OKLAHOMA
CONCERNING...TORNADO WATCH 137...
VALID 232226Z - 240130Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 137 CONTINUES.
SUMMARY...CONDITIONS ARE FAVORABLE FOR A SUPERCELL OR TWO, WITH VERY
LARGE HAIL AND TORNADO RISK PRIMARILY OVER SOUTHWEST INTO
SOUTH-CENTRAL OKLAHOMA.
DISCUSSION...VISIBLE SATELLITE IMAGERY SHOWS TOWERING CU ALONG THE
DRYLINE FROM SOUTHWEST OK WHERE TEMPERATURES HAVE RISEN INTO THE 90S
F. MEANWHILE, GUSTY SOUTH/SOUTHEAST WINDS HAVE MAINTAINED UPPER 60S
F DEWPOINTS EAST OF THE DRYLINE. GIVEN COOL MIDLEVEL TEMPERATURES
AND STEEP LAPSE RATES, THIS IS RESULTING IN AN AREA OF VERY STRONG
INSTABILITY.
NOTABLY, GPS PWAT SENSORS INDICATE RELATIVELY GREATER VALUES NEAR
THE RED RIVER AND SOUTH INTO TX, WHILE DRIER AIR ALOFT IS MORE
EVIDENT INTO CENTRAL OK CURRENTLY.
THE DRYLINE IS EXPECTED TO BACK WESTWARD LATER THIS EVENING, WHILE
THE LOW-LEVEL JET ALSO INCREASES RAPIDLY INTO THE 40-50 KT RANGE.
SINCE THE MOIST SECTOR IS NOT COOL, THE ENTIRE AREA SHOULD REMAIN
QUITE UNSTABLE, AND SEVERAL MODELS SUGGEST AN ISOLATED SUPERCELL
WILL BE POSSIBLE. IF THIS OCCURS, VERY LARGE HAIL AND A TORNADO RISK
IS EVIDENT. FORECAST HODOGRAPHS INDICATE A RELATIVELY SLOW STORM
MOTION TO THE EAST FOR A RIGHT-MOVING SUPERCELL.
..JEWELL/HART.. 04/23/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...OUN...
LAT...LON 34749908 35139890 35259862 35289806 35259784 35209769
35119758 34829751 34519764 34369806 34279905 34399923
34749908
MOST PROBABLE PEAK TORNADO INTENSITY...120-145 MPH
MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN
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