279  
FXUS01 KWBC 141939  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
338 PM EDT MON OCT 14 2024  
 
VALID 00Z TUE OCT 15 2024 - 00Z THU OCT 17 2024  
 
 
...WET SNOW OVER PARTS OF THE UPPER GREAT LAKES TO THE NORTHEAST  
AND CENTRAL APPALACHIANS...  
 
...RAIN OVER PARTS OF THE PACIFIC NORTHWEST AND WET SNOW OVER  
PARTS OF THE NORTHERN CASCADES...  
   
..LAKE EFFECT RAIN SOUTH OF THE GREAT LAKES  
 
HIGH PRESSURE OVER CENTRAL CANADA WILL MOVE SOUTHWARD TO THE  
MIDDLE MISSISSIPPI/OHIO VALLEYS BY WEDNESDAY. THE CLEAR SKY AND  
CALM WIND ASSOCIATED WITH THE HIGH HAVE TRIGGERED FREEZE WARNINGS,  
ADVISORIES, AND WATCHES OVER PARTS OF THE MIDWEST.  
 
MOREOVER, AN UPPER-LEVEL LOW OVER THE NORTHEAST TO THE GREAT LAKES  
WILL PRODUCE LAKE-EFFECT RAIN SOUTH OF THE GREAT LAKES OVER PARTS  
OF THE OHIO VALLEY AND CENTRAL APPALACHIANS THROUGH WEDNESDAY  
AFTERNOON. WET SNOW WILL DEVELOP OVER PARTS OF THE HURON MOUNTAINS  
OF MICHIGAN S UPPER PENINSULA THROUGH TUESDAY NIGHT. IN ADDITION,  
RAIN AND WET SNOW AT HIGHER ELEVATIONS WILL DEVELOP OVER PARTS OF  
THE NORTHEAST THROUGH WEDNESDAY EVENING. WET SNOW WILL ALSO  
DEVELOP OVERNIGHT TUESDAY OVER PARTS OF THE HIGHEST ELEVATIONS OF  
THE CENTRAL APPALACHIANS THROUGH WEDNESDAY.  
 
MEANWHILE, EASTERLY FLOW OFF THE GULF OF MEXICO WILL HELP PRODUCE  
SHOWERS AND THUNDERSTORMS OVER PARTS OF THE WESTERN GULF COAST ON  
WEDNESDAY. ADDITIONALLY, TROPICAL MOISTURE OVER THE FLORIDA KEYS  
WILL KEEP SHOWERS AND THUNDERSTORMS IN THE FORECAST THROUGH  
WEDNESDAY.  
 
FURTHERMORE, A FRONT MOVING ONSHORE OVER THE PACIFIC NORTHWEST  
LATE MONDAY AFTERNOON WILL MOVE INLAND TO THE NORTHERN ROCKIES AND  
NORTHERN CALIFORNIA BY WEDNESDAY EVENING. THE SYSTEM WILL PRODUCE  
LIGHT RAIN OVER PARTS OF THE PACIFIC NORTHWEST THROUGH WEDNESDAY  
AFTERNOON. ON WEDNESDAY, THE RAIN WILL EXPAND INTO THE NORTHERN  
INTERMOUNTAIN REGION. MOREOVER, WET SNOW WILL DEVELOP OVER PARTS  
OF THE HIGHEST ELEVATIONS OF THE NORTHERN CASCADES ON WEDNESDAY.  
 
UPPER-LEVEL DYNAMIC ASSOCIATE WITH AN UPPER-LEVEL LOW OVER THE  
SOUTHWEST WILL AID IN PRODUCING WIDELY SCATTERED SHOWERS AND  
THUNDERSTORMS OVER PARTS OF THE GREAT BASIN, SOUTHWEST, AND  
CENTRAL/SOUTHERN ROCKIES FROM MONDAY INTO WEDNESDAY EVENING.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 
 
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