709  
ACUS48 KWNS 090932  
SWOD48  
SPC AC 090930  
 
DAY 4-8 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK  
0330 AM CST THU NOV 09 2017  
 
VALID 121200Z - 171200Z  
   
..DISCUSSION
 
 
SEVERAL LOW-AMPLITUDE WAVES ARE FORECAST TO TRAVERSE THE U.S. DURING  
THE MEDIUM-RANGE PERIOD, THROUGH AN OTHERWISE QUASI-ZONAL UPPER FLOW  
PATTERN. HOWEVER, MEDIUM-RANGE MODELS ARE IN AGREEMENT IN  
SUGGESTING THAT PROSPECTS FOR MOISTURE RETURN AHEAD OF ANY OF THESE  
TROUGHS WILL BE MUTED, DUE TO WEAK SURFACE REFLECTION OF THE UPPER  
SYSTEMS AND THUS LITTLE LIKELIHOOD FOR SCOURING OUT ENTRENCHED  
CONTINENTAL AIR PRESIDING OVER THE U.S. MAINLAND. GIVEN THE  
BACKGROUND PATTERN, LITTLE IF ANY RISK FOR SEVERE WEATHER IS EVIDENT  
THROUGH THE PERIOD.  
 
..GOSS.. 11/09/2017  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab SPC Page Main Text Page