649  
ACUS48 KWNS 100825  
SWOD48  
SPC AC 100824  
 
DAY 4-8 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK  
0324 AM CDT SUN AUG 10 2025  
 
VALID 131200Z - 181200Z  
   
..DISCUSSION
 
 
FROM WEDNESDAY/D4 INTO THURSDAY/D5, A SHORTWAVE TROUGH IS FORECAST  
TO MOVE FROM THE PACIFIC NORTHWEST ACROSS MT AND OVER THE FAR  
NORTHERN PLAINS, WITH AN UPPER SPEED MAX DEVELOPING INTO SOUTHERN SK  
AND MB. IN ADVANCE OF THIS TROUGH, A LEADING TROUGH AFFECTING THE  
GREAT LAKES REGION WILL ALSO LIFT NORTHEASTWARD, WITH HEIGHT RISES  
AND A WARMING PATTERN ACROSS PARTS OF THE PLAINS AND UPPER MIDWEST.  
THE COMBINATION OF INCREASING DEWPOINTS AND THE UPPER TROUGH  
GLANCING THE REGION MAY RESULT IN SOME MANNER OF SEVERE RISK LATE  
THURSDAY/D5, AND MOST LIKELY FROM PARTS OF ND INTO NORTHERN MN, AND  
IN EVENING/OVERNIGHT MCS FORM. FUTURE MODEL TRENDS WILL BE MONITORED  
FOR A POSSIBLE RISK AREA.  
 
FROM FRIDAY/D6 ONWARD, PREDICTABILITY DECREASES WITH THE MOTION OF  
THE AFOREMENTIONED UPPER WAVE. HOWEVER, LARGE INSTABILITY IS LIKELY  
TO AGAIN BUILD ACROSS THE MID MO/UPPER MS VALLEYS, AND AT LEAST  
SPORADIC SEVERE STORMS CANNOT BE RULED OUT FROM THE NORTHERN HIGH  
PLAINS EASTWARD TOWARD THE UPPER GREAT LAKES.  
 
..JEWELL.. 08/10/2025  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab SPC Page Main Text Page