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Mesoscale Discussion 82 |
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MESOSCALE DISCUSSION 0082
NWS STORM PREDICTION CENTER NORMAN OK
0721 AM CST TUE FEB 11 2014
AREAS AFFECTED...NE SC AND SE NC
CONCERNING...WINTER MIXED PRECIPITATION
VALID 111321Z - 111915Z
SUMMARY...RAIN WILL CHANGE TO FREEZING RAIN...POSSIBLY MIXED WITH
SNOW AND SLEET...THIS MORNING. PRECIPITATION RATES ARE EXPECTED TO
INCREASE THROUGH MIDDAY.
DISCUSSION...RAIN WAS CHANGING TO MIXED WINTER PRECIPITATION TYPES
THIS MORNING ACROSS PARTS OF THE COASTAL PLAIN IN SE NC AND NE
SC...AS SFC TEMPERATURES BEGIN TO FALL IN AREA OF LOW-LEVEL COLD-AIR
ADVECTION. TEMPERATURES MAINLY FROM 30-33 DEGREES WILL CONTINUE TO
FALL THROUGH THE DAY AND FREEZING RAIN...POSSIBLY MIXED WITH SNOW
AND SLEET AT TIMES...IS EXPECTED FOR SEVERAL HOURS. PRECIPITATION
RATES WILL INCREASE AS FRONTOGENETIC FORCING IN THE 850-700 MB LAYER
OVERSPREADS THE REGION...AND WARM/MOIST ADVECTION OVERRIDES
COLDER/DRIER LOW LEVELS. THIS TREND WAS EVIDENT IN SFC OBS AT KEYF
WHERE MODERATE RAIN /33 DEGREES F/ AND AT KMRH WHERE MODERATE
FREEZING RAIN /32 DEGREES F/ WAS REPORTED. FREEZING RAIN RATES COULD
APPROACH 0.05 IN PER 3 HRS THROUGH THE MORNING HOURS.
..LEITMAN.. 02/11/2014
ATTN...WFO...MHX...RAH...ILM...CAE...GSP...
LAT...LON 34858081 35047955 35287719 35287664 35167628 34927622
34687626 34427682 33767803 33727824 33717893 33757956
33918026 34108063 34418108 34768119 34858081
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