947  
ACUS02 KWNS 060558  
SWODY2  
SPC AC 060558  
 
DAY 2 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK  
1158 PM CST TUE DEC 05 2017  
 
VALID 071200Z - 081200Z  
   
..NO THUNDERSTORM AREAS FORECAST
 
 
   
..SUMMARY
 
 
NO THUNDERSTORMS ARE EXPECTED ON THURSDAY.  
   
..SYNOPSIS
 
 
A DEEP UPPER TROUGH WILL COVER MUCH OF THE CONUS AT THE BEGINNING OF  
THE PERIOD WITH UPPER RIDGING IN PLACE ALONG THE WEST COAST. THIS  
HIGHLY AMPLIFIED PATTERN WILL PERSIST, AND PERHAPS DEEPEN, AS IT  
GRADUALLY SHIFTS EASTWARD DURING THE DAY. BY 12Z FRIDAY, EXPANSIVE  
UPPER RIDGING WILL LIKELY BE CENTERED OVER NORTHERN CA/SOUTHERN OR  
AND POSITIVELY TILTED UPPER TROUGHING WILL EXTEND FROM THE HUDSON  
BAY INTO NORTHERN MEXICO.  
 
AT THE SURFACE, STRONG HIGH PRESSURE WILL EXPAND  
EASTWARD/SOUTHEASTWARD INTO THE MIDDLE/LOWER MS VALLEY AND  
SOUTHEAST, HELPING THE DRY, COLD, AND STABLE CONTINENTAL AIRMASS  
REMAIN IN CONTROL OF THE SENSIBLE WEATHER ACROSS THE MAJORITY OF THE  
CONUS. THE ONLY EXCEPTION IS FROM SOUTH TX NORTHEASTWARD INTO THE  
CAROLINA WHERE SOME SHOWERS ARE POSSIBLE WITHIN THE WARM-AIR  
ADVECTION ZONE NORTH OF THE DECAYING FRONT. HOWEVER, MOIST PROFILES  
AND RESULTING POOR LAPSE RATES WILL TEMPER INSTABILITY, KEEPING  
LIGHTNING POTENTIAL VERY LOW.  
 
..MOSIER.. 12/06/2017  
 

 
 
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