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WidreMann told us it was gonna snow thread


LithiaWx

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Latest GSP Update:

 

 

AS OF 10 AM...LATEST RADAR IMAGE INDICATED A BAND OF LIGHT PRECIP   ORIENTED SW TO NE ACROSS THE PIEDMONT OF THE CAROLINAS. RECENT   PUBLIC AND SOCIAL MEDIA REPORTS INDICATE THAT LARGE DENDRITIC   SNOWFLAKES ARE REACHING THE SFC UNDER RETURNS OF 30 TO 35 DBZ.   HOWEVER...REPORTS AND WEB CAMS ALSO VERIFY THAT SNOW IS MELTING AS   IT FALLS AS AIR TEMPS RANGE IN THE MID 30S AND SOIL TEMPS REMAIN   WELL IN THE 40S. IT APPEARS THAT LITTLE TO NO ACCUMULATION WILL   OCCUR AS THIS BAND SHIFTS EAST THIS MORNING.    THE FOCUS WITH THIS FORECAST UPDATE WILL BE THE SECOND ROUND OF   PRECIPITATION. THE PASSAGE OF DEEP SYNOPTIC FORCING AND INSTABILITY   SHOULD SUPPORT THE DEVELOPMENT OF SHOWERS ACROSS THE UPSTATE AND   ADJACENT NC COUNTIES LATE THIS MORNING THROUGH THIS AFTERNOON. THIS   IS SUPPORTED BY RECENT RUNS OF THE MESOSCALE MODELS. IN FACT...NAM   FORECAST SOUNDINGS INDICATE THAT MIXING MAY REACH H6 WITH CAPE   VALUES REACHING 200 J/KG. RECENT VISIBLE SATELLITE IMAGES INDICATES   THAT THINNING CLOUD COVER HAS STARTED TO DEVELOP ACROSS THE UPPER   SAVANNAH RIVER VALLEY...POSSIBLY AIDING IN STEEPENING LLVL LAPSE   RATES. AS THE SHOWERS DEVELOP...THEY WILL TRACK SLOWLY EAST ACROSS   THE UPSTATE AND SOUTHERN TIER OF THE CLT METRO AREA DURING THE MID   AND LATE AFTERNOON. BY THIS AFTERNOON...PARTIAL THICKNESS VALUES   WILL COOL WELL WITHIN RANGE TO SUPPORT SN AS THE PRIMARY PRECIP   TYPE. THE LIMITING FACTOR WILL BE AIR TEMPERATURE VALUES RANGING   BETWEEN 33 TO 35 DEGREES AND WARM SOIL/ROAD TEMPS. HOWEVER...WITH   THIS PACKAGE I WILL INTRODUCE A MENTION OF TSRA ACROSS PORTIONS OF   THE UPSTATE...WHICH WOULD PROVIDE HIGH ENOUGH RATES TO OUTPACE   MELTING. THE CURRENT WSW PLACEMENT AND TIMING HIGHLIGHTS THE REGION   OF THE AFTERNOON INSTABILITY SHOWERS...NO CHANGE NEEDED AT THIS TIME. 
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