956  
ACUS02 KWNS 251740  
SWODY2  
SPC AC 251739  
 
DAY 2 CONVECTIVE OUTLOOK CORR 1  
NWS STORM PREDICTION CENTER NORMAN OK  
1239 PM CDT WED JUN 25 2025  
 
VALID 261200Z - 271200Z  
 
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM PARTS OF  
THE SOUTHERN PLAINS TO THE GREAT LAKES...FROM THE MID-ATLANTIC TO  
THE SOUTHEAST...AND INTO FLORIDA...AND ACROSS NORTHERN MONTANA...  
 
CORRECTED FOR INCORRECT GRAPHIC  
   
..SUMMARY
 
 
SCATTERED STRONG STORMS ARE POSSIBLE FROM THE CENTRAL PLAINS TO  
LOWER MICHIGAN, OVER PARTS OF THE SOUTHEAST, AND OVER PARTS OF  
MONTANA ON THURSDAY. SCATTERED DAMAGING GUSTS APPEARS TO BE THE MAIN  
CONCERN.  
   
..SYNOPSIS
 
 
A WEAK UPPER LOW WILL REMAIN OVER FLORIDA TOMORROW, WITH RELATIVELY  
COOL MIDLEVEL TEMPERATURES OVER THE SOUTHEAST, ALTHOUGH WARMER  
COMPARED TO TODAY. OTHERWISE, MUCH OF THE EAST WILL REMAIN BENEATH  
AN UPPER RIDGE. AROUND THE NORTHERN PERIPHERY OF THIS RIDGE, MODEST  
SOUTHWEST FLOW ALOFT WILL STRETCH FROM THE CENTRAL PLAINS INTO THE  
GREAT LAKES AND NORTHEAST, WITH RELATIVELY WARM TEMPERATURES ALOFT.  
TO THE WEST, A LOW-AMPLITUDE UPPER TROUGH WILL PUSH EAST ACROSS  
MONTANA.  
 
AT THE SURFACE, AN EXPANSIVE AREA OF MOISTURE WILL PERSIST FROM THE  
CENTRAL AND SOUTHERN PLAINS EASTWARD TO THE MID ATLANTIC, SOUTH OF A  
COLD FRONT. THIS FRONT WILL EXTEND FROM KS INTO SOUTHERN WI AND  
LOWER MI, AND ALSO FROM CENTRAL NY INTO EASTERN PA.  
   
..MID ATLANTIC TO THE SOUTHEAST
 
 
A BROAD AREA OF MODERATE TO STRONG INSTABILITY IS FORECAST FROM THE  
MID-ATLANTIC TO THE SOUTHEAST ON THURSDAY. SHEAR IS EXPECTED TO BE  
VERY WEAK THROUGH THE PERIOD, BUT MODERATE TO STRONG INSTABILITY AND  
RELATIVELY STEEP MID-LEVEL LAPSE RATES BENEATH THE UPPER LOW WILL  
PROVIDE A THERMODYNAMIC ENVIRONMENT FAVORABLE FOR SOME DAMAGING WIND  
GUSTS. MORE FOCUSED AREAS OF STRONG TO SEVERE STORMS MAY EXIST NEAR  
OUTFLOW BOUNDARIES FROM D1/WEDNESDAY CONVECTION.  
   
..CENTRAL/SOUTHERN PLAINS TO THE GREAT LAKES
 
 
MODERATE TO STRONG INSTABILITY IS FORECAST TO DEVELOP ALONG A  
FRONTAL ZONE FROM KANSAS TO WISCONSIN ON THURSDAY AFTERNOON/EVENING.  
SHEAR IS EXPECTED TO REMAIN WEAK (20 TO 25 KNOTS), BUT STRONG  
INSTABILITY WILL SUPPORT THE THREAT FOR SOME DAMAGING WIND GUSTS.  
FARTHER SOUTH, ACROSS WESTERN OKLAHOMA, SHEAR WILL BE VERY WEAK, BUT  
MODERATE INSTABILITY AND DEEP MIXING (TO AROUND 600MB) WILL SUPPORT  
SOME THREAT FOR DOWNBURSTS AND ISOLATED WIND GUSTS.  
   
..MONTANA
 
 
MODERATE MID-LEVEL FLOW IS EXPECTED TO OVERSPREAD NORTHERN MONTANA  
ON THURSDAY WHERE A DEEPLY MIXED BOUNDARY LAYER (DEEPER THAN 3KM) IS  
FORECAST. WHILE INSTABILITY SHOULD BE LIMITED BY MEAGER MOISTURE, IT  
SHOULD BE SUFFICIENT FOR A FEW STORMS. MODERATE SHEAR (25 TO 30  
KNOTS) AND A DEEPLY MIXED BOUNDARY LAYER WILL SUPPORT A THREAT FOR  
SOME SEVERE WIND GUSTS THURSDAY AFTERNOON/EVENING.  
 
..BENTLEY.. 06/25/2025  
 

 
 
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