034  
FXUS01 KWBC 111956  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
255 PM EST SUN NOV 11 2018  
 
VALID 00Z MON NOV 12 2018 - 00Z WED NOV 14 2018  
 
...EXTREMELY CRITICAL FIRE WEATHER CONDITIONS CONTINUE IN  
CALIFORNIA...  
 
...HEAVY SNOW POSSIBLE OVER THE SOUTHERN HIGH PLAINS SUNDAY  
EVENING INTO MONDAY AND OVER PARTS OF NORTHERN NEW ENGLAND ON  
TUESDAY...  
 
...HEAVY RAIN POSSIBLE FROM THE LOWER MISSISSIPPI VALLEY INTO  
PARTS OF THE SOUTHERN APPALACHIANS AND SOUTHERN MID-ATLANTIC...  
 
...TEMPERATURES WILL BE 20 TO 30 DEGREES BELOW AVERAGE OVER PARTS  
OF THE CENTRAL/SOUTHERN ROCKIES AND CENTRAL/SOUTHERN PLAINS...  
 
DRY GROUND AND DRY RELATIVE HUMIDITIES WILL ALL COMBINE TO PROLONG  
DANGEROUS FIRE WEATHER ACROSS CALIFORNIA. THE STORM PREDICTION  
CENTER HAS EXTREMELY CRITICAL CONDITIONS INDICATED FOR PARTS OF  
SOUTHERN CALIFORNIA, WITH CRITICAL CONDITIONS ACROSS PARTS OF  
NORTHERN CALIFORNIA. WIDESPREAD RED FLAG WARNINGS ARE IN EFFECT.  
 
UPPER-LEVEL ENERGY OVER THE GREAT LAKES WILL AID IN PRODUCING SNOW  
OVER THE UPPER GREAT LAKES THROUGH MONDAY MORNING. ADDITIONAL  
UPPER-LEVEL ENERGY WILL MOVE OVER THE UPPER MISSISSIPPI  
VALLEY/UPPER GREAT LAKES ON MONDAY THAT WILL AID IN PRODUCING LAKE  
EFFECT SNOW OVER PARTS OF THE UPPER GREAT LAKES ON MONDAY INTO  
TUESDAY. IN ADDITION, UPPER-LEVEL ENERGY OVER PARTS OF THE  
SOUTHWEST/SOUTHERN ROCKIES WILL MOVE EASTWARD INTO THE SOUTHERN  
PLAINS BY TUESDAY. THE ENERGY WILL AID IN PRODUCING SNOW OVER  
PARTS OF THE CENTRAL/SOUTHERN ROCKIES THAT WILL EXPANDING INTO THE  
CENTRAL PLAINS BY SUNDAY EVENING. THE SNOW WILL CONTINUE TO  
EXPAND INTO PARTS OF THE SOUTHERN HIGH PLAINS BY MONDAY MORNING.  
THE SNOW WILL END WEST TO EAST OVER THE SOUTHERN PLAINS OVERNIGHT  
MONDAY INTO TUESDAY MORNING. FURTHERMORE BY TUESDAY, COLD HIGH  
PRESSURE WILL SETTLE OVER PARTS OF THE CENTRAL ROCKIES INTO THE  
SOUTHERN HIGH PLAINS. ELSEWHERE, SNOW OVER PARTS OF THE NORTHERN  
ROCKIES/NORTHERN HIGH PLAINS WILL END BY MONDAY MORNING.  
 
MEANWHILE, A FRONT EXTENDING FROM THE GREAT LAKES SOUTHWESTWARD TO  
THE SOUTHERN PLAINS WILL MOVE EASTWARD TO THE LOWER GREAT LAKES TO  
THE SOUTHERN APPALACHIANS BY TUESDAY. MOISTURE MOVING NORTHWARD  
OUT OF THE WESTERN GULF OF MEXICO WILL MOVE OVER THE BOUNDARY  
AIDING IN THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS OVER PARTS  
OF THE WESTERN/CENTRAL GULF COAST THAT WILL EXPAND INTO PARTS OF  
THE EASTERN GULF COAST ON MONDAY INTO MONDAY EVENING. FARTHER  
NORTH OF THE FRONT, OVERRUNNING RAIN AND SNOW WILL DEVELOP OVER  
PARTS OF THE MIDDLE MISSISSIPPI VALLEY BY MONDAY AFTERNOON THAT  
WILL MOVE INTO PARTS OF THE OHIO VALLEY OVERNIGHT MONDAY. A WAVE  
OF LOW PRESSURE WILL DEVELOP ALONG THE SOUTHEAST COAST BY MONDAY  
EVENING THAT WILL MOVE NORTHWARD ALONG THE COAST TO THE  
MID-ATLANTIC BY TUESDAY. OVERNIGHT MONDAY, SHOWERS AND  
THUNDERSTORMS WILL DEVELOP ALONG THE SOUTHEAST COAST INTO TUESDAY.  
RAIN WILL ALSO DEVELOP OVER PARTS OF THE OHIO VALLEY/MID-ATLANTIC  
OVERNIGHT MONDAY AS WELL. BY TUESDAY MORNING, RAIN WILL MOVE INTO  
SOUTHERN NEW ENGLAND AND THE NORTHERN MID-ATLANTIC WITH SNOW  
DEVELOPING OVER PARTS OF NORTHERN NEW ENGLAND.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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