657  
FXUS01 KWBC 290822  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
321 AM EST MON NOV 29 2021  
 
VALID 12Z MON NOV 29 2021 - 12Z WED DEC 01 2021  
 
...LIGHT TO MODERATE RAIN SHOWERS TO CONTINUE OVER PORTIONS OF THE  
PACIFIC NORTHWEST...  
 
...LAKE EFFECT SNOW SHOWERS CONTINUE ACROSS GREAT LAKES REGION  
OVER THE NEXT COUPLE OF DAYS...  
 
...WARMER TEMPERATURES AHEAD FOR MUCH OF THE COUNTRY; ELEVATED  
FIRE WEATHER RISK FOR SOUTHERN CALIFORNIA...  
 
A QUIETER AND WARMER PATTERN IS IN STORE FOR MUCH OF THE COUNTRY  
AS UPPER-LEVEL ENERGY REMAINS EITHER OVER CANADA OR STATIONARY OFF  
THE BAJA COAST. A DEEPENING LOW PRESSURE SYSTEM OFF THE NORTHEAST  
COAST WILL CAUSE GUSTY WINDS ACROSS NEW ENGLAND THIS AFTERNOON  
THROUGH TONIGHT. A WEAK CLIPPER SYSTEM WILL BRING YET ANOTHER  
ROUND OF SNOW SHOWERS TO THE GREAT LAKES REGION OVER THE NEXT TWO  
DAYS. SNOWFALL TOTALS WILL BE LESS THAN THE PREVIOUS SYSTEM, BUT  
AREAS DOWNWIND OF THE GREAT LAKES MAY RECEIVE HIGHER AMOUNTS DUE  
TO LAKE EFFECT ENHANCEMENT. A WEAK ATMOSPHERIC RIVER WILL ARRIVE  
OVER MUCH OF BRITISH COLUMBIA, CANADA AND PARTS OF THE PACIFIC  
NORTHWEST ON TUESDAY. RAINFALL AMOUNTS IN THE U.S. WILL BE HIGHEST  
OVER AREAS THAT BORDER BRITISH COLUMBIA SUCH AS THE NORTHERN  
CASCADES AND OLYMPIC MOUNTAINS DUE TO OROGRAPHIC ENHANCEMENT. ONLY  
A FEW INCHES OF RAIN ARE EXPECTED TO ACCUMULATE BY THE TIME THAT  
THE AR EVENT ENDS ON TUESDAY NIGHT.  
 
PERSISTENT UPPER-LEVEL RIDGING IN THE WEST LONGWAVE TROUGHING IN  
THE EAST AND A CUTOFF LOW OVER BAJA CALIFORNIA WILL CONTRIBUTE TO  
THE SPREAD OF WARM AIR ACROSS THE MUCH OF THE CONUS OVER THE NEXT  
SEVERAL DAYS. TEMPERATURES ARE EXPECTED TO BE BETWEEN 25-30  
DEGREES ABOVE AVERAGE OVER MUCH OF THE NORTHERN/CENTRAL PLAINS  
TODAY, WHILE THE EAST EXPERIENCES A COOLDOWN IN THE WAKE OF A  
DEEPENING AREA OF LOW PRESSURE SYSTEM AND ITS ASSOCIATED COLD  
FRONT MOVING INTO THE NORTH ATLANTIC. TEMPERATURES WILL MODERATE A  
BIT ON TUESDAY BEFORE ANOTHER SUBSTANTIAL WARM-UP RETURNS TO THE  
NORTHERN PLAINS ON WEDNESDAY AND SPREADS EAST THROUGH THE END OF  
THE WEEK. THE ROCKIES WILL EXPERIENCE THIS WARM SPELL TOO, WHICH  
SHOULD BE DISAPPOINTING TO SNOW LOVERS, PARTICULARLY IN THE  
CENTRAL ROCKIES AREA, AS MUCH OF THE REGION CONTINUES TO  
EXPERIENCE A DRYER THAN NORMAL SNOW SEASON. ELEVATED FIRE WEATHER  
RISK IS IN EFFECT FOR PARTS OF SOUTHERN CALIFORNIA THROUGH TUESDAY  
DUE TO MARGINALLY DRY AND WINDY CONDITIONS.  
 
KEBEDE  
 
GRAPHICS ARE AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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