283  
ACUS01 KWNS 030045  
SWODY1  
SPC AC 030044  
 
DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK  
0644 PM CST SAT DEC 02 2017  
 
VALID 030100Z - 031200Z  
   
..NO SEVERE THUNDERSTORM AREAS FORECAST
 
 
   
..SUMMARY
 
 
ISOLATED THUNDERSTORMS ARE POSSIBLE ACROSS THE COASTAL PACIFIC  
NORTHWEST THIS TONIGHT.  
   
..DISCUSSION
 
 
EARLY-EVENING WATER VAPOR IMAGERY DEPICTS A WELL-DEFINED SHORT-WAVE  
TROUGH OFF THE WA/OR COAST, THIS FEATURE WILL MOVE INLAND TONIGHT  
ALONG WITH MODESTLY STEEP LAPSE RATES. 00Z SOUNDING FROM UIL DEPICTS  
WEAK SURFACE-BASED INSTABILITY WHICH MAY PROVE ADEQUATE FOR DEEPER  
CONVECTIVE UPDRAFTS CAPABLE OF PENETRATING LEVELS NECESSARY FOR  
LIGHTNING. EVEN SO, CURRENT LIGHTNING DATA DOES NOT DEPICT ACTIVE  
THUNDERSTORMS OFF THE COAST BENEATH THE TROUGH AND ANY STORMS THAT  
DO FORM WILL BE QUITE SPARSE.  
 
..DARROW.. 12/03/2017  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab SPC Page Main Text Page