018  
ACUS11 KWNS 281246  
SWOMCD  
SPC MCD 281246  
OKZ000-TXZ000-281445-  
 
MESOSCALE DISCUSSION 0591  
NWS STORM PREDICTION CENTER NORMAN OK  
0746 AM CDT TUE APR 28 2026  
 
AREAS AFFECTED...NORTHERN TEXAS INTO SOUTHERN OKLAHOMA  
 
CONCERNING...SEVERE THUNDERSTORM WATCH 168...  
 
VALID 281246Z - 281445Z  
 
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 168  
CONTINUES.  
 
SUMMARY...LARGE HAIL AND EVENTUALLY DAMAGING WINDS APPEAR LIKELY  
ALONG THE WARM FRONTAL CORRIDOR CROSSING THE RED RIVER VALLEY THIS  
MORNING.  
 
DISCUSSION...A MULTICELL STORM COMPLEX IS CURRENTLY OVER  
BAYLOR/ARCHER COUNTIES, TX, WITH IMPRESSIVE MORNING SATELLITE  
PRESENTATION WITH OVERSHOOTING TOPS AND ENHANCED-V SIGNATURE. THESE  
STORMS ARE RIDING ALONG THE WARM FRONT, WHICH EXTENDS EAST/NORTHEAST  
INTO SOUTHEAST OK. SOUTH OF THIS BOUNDARY, A VERY MOIST AND UNSTABLE  
AIR MASS EXISTS, WITH MLCAPE ALREADY OVER 3500 J/KG AT 12Z.  
 
GIVEN EFFECTIVE DEEP-LAYER SHEAR OF 50-60 KT AND 100 KT HIGH-LEVEL  
FLOW, THIS COMPLEX IS FORECAST TO PERSIST THROUGH THE MORNING, AND  
PERHAPS STRENGTHEN AS SBCIN IS REDUCED FURTHER. IN THAT CASE, MORE  
OF A RIGHTWARD PROPAGATION IS POSSIBLE.  
 
ELSEWHERE, STRONG ELEVATED INSTABILITY EXISTS WELL NORTH OF THE WARM  
FRONT. THE 12Z OUN SOUNDING SHOWS MUCAPE OVER 4000 J/KG, ALONG WITH  
AMPLE DEEP-LAYER SHEAR. SHOULD ANY CELLS FORM WITHIN THE BROAD WARM  
ADVECTION ZONE, LARGE HAIL WOULD BE LIKELY.  
 
..JEWELL.. 04/28/2026  
   
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT  
 
ATTN...WFO...TSA...FWD...OUN...  
 
LAT...LON 33629614 33569656 33669724 33709799 33599869 33529929  
33579949 33689953 33939951 34449892 34779788 34899716  
34909621 34599581 34309578 33839581 33629614  
 
MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH  
MOST PROBABLE PEAK WIND GUST...65-80 MPH  
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN  
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