277  
ACUS11 KWNS 272345  
SWOMCD  
SPC MCD 272344  
NEZ000-SDZ000-280115-  
 
MESOSCALE DISCUSSION 0580  
NWS STORM PREDICTION CENTER NORMAN OK  
0644 PM CDT SUN APR 27 2025  
 
AREAS AFFECTED...PORTIONS OF WESTERN NEBRASKA  
 
CONCERNING...TORNADO WATCH 178...  
 
VALID 272344Z - 280115Z  
 
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 178 CONTINUES.  
 
SUMMARY...SUPERCELL TORNADO THREAT IS EXPECTED TO INCREASE OVER THE  
NEXT HOUR.  
 
DISCUSSION...RECENT RADAR DATA FROM LNX HAS SHOWN SPLITTING  
SUPERCELL STRUCTURES AND RELATED MERGERS OVER PORTIONS OF WESTERN  
NE, WITH A RECENT INTENSIFICATION OF A RIGHT-MOVING SUPERCELL. AS  
THIS STORM AND OTHER NEARBY DEVELOPING STORMS CONTINUE  
EAST-NORTHEASTWARD, A MOIST BOUNDARY LAYER (DEWPOINTS IN THE LOWER  
60S) AND INCREASING CLOCKWISE-CURVED HODOGRAPHS (EFFECTIVE SRH  
INCREASING TO AROUND 400 M2/S2) WILL FAVOR AN INCREASING SUPERCELL  
TORNADO RISK. GIVEN, THE AMPLE STREAMWISE VORTICITY AND RICH  
LOW-LEVEL MOISTURE, A STRONG TORNADO CANNOT BE RULED OUT.  
 
..WEINMAN.. 04/27/2025  
   
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
 
 
ATTN...WFO...LBF...UNR...  
 
LAT...LON 41540202 42050220 42480265 42770270 42960242 43060212  
43040173 42830127 42390090 41790095 41470122 41390177  
41540202  
 
MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH  
MOST PROBABLE PEAK WIND GUST...65-80 MPH  
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN  
 
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