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Mesoscale Discussion 81 |
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MESOSCALE DISCUSSION 0081
NWS STORM PREDICTION CENTER NORMAN OK
0720 AM CST TUE FEB 11 2014
AREAS AFFECTED...PORTIONS OF NERN MS...NRN AL...NRN GA...NWRN
SC...SWRN NC
CONCERNING...WINTER MIXED PRECIPITATION
VALID 111320Z - 111815Z
SUMMARY...FREEZING RAIN...SLEET AND SNOW WILL CONTINUE ACROSS THE
EASTERN HALF OF THE DISCUSSION AREA THROUGH 18Z WHILE GRADUALLY
DIMINISHING...AT LEAST IN THE SHORT TERM...ACROSS WESTERN PORTIONS
TOWARDS 18Z.
DISCUSSION...WIDESPREAD PRECIPITATION CONTINUES AT 13Z ACROSS MUCH
OF THE SERN U.S. TO THE NORTH OF A FRONTAL BOUNDARY DRAPED ACROSS
THE N-CENTRAL/NERN GULF OF MEXICO. A WEAK SHORTWAVE OVER THE LOWER
MS VALLEY EMBEDDED WITHIN THE LARGELY ZONAL FLOW CONTINUES TO
SUPPORT THE EXPANSIVE PRECIPITATION AREA. THE NRN PERIPHERY OF THIS
AREA OF PRECIPITATION IS OCCURRING WITHIN NEAR- OR BELOW-FREEZING
WET-BULB TEMPERATURES...AND WHERE AN EAST-WEST AXIS OF 800-700 MB
FRONTOGENETIC FORCING HAS LED TO HEAVIER BANDED PRECIPITATION.
OBSERVED AND FORECAST SOUNDINGS SUPPORT A CONTINUED MIX OF FREEZING
RAIN /RATES OF 0.05 INCHES/3 HRS/ AND SLEET ACROSS SRN PORTIONS OF
THE DISCUSSION AREA WITH MOSTLY SNOW ACROSS NRN PORTIONS. SNOWFALL
RATES OF ONE INCH/HR WILL BE POSSIBLE WITH THE HEAVIER MESOSCALE
BANDING...PRIMARILY ACROSS NRN PORTIONS OF AL/GA...NWRN SC AND FAR
SWRN NC.
WRN PORTIONS OF DISCUSSION AREA SHOULD SEE DIMINISHED PRECIP RATES
AT LEAST IN THE SHORT TERM IN THE 15Z-18Z TIME FRAME.
..BUNTING.. 02/11/2014
ATTN...WFO...CAE...GSP...MRX...FFC...BMX...HUN...MEG...JAN...
LAT...LON 34878791 34888509 35228239 35428105 35018047 34608067
34348087 33948228 33888353 33888452 33428653 33168772
33168827 33318876 33678905 34268890 34698846 34878791
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