ZCZC SPCSWOMCD ALL
ACUS11 KWNS 252335 
SPC MCD 252335 
SDZ000-260330-

MESOSCALE DISCUSSION 2062
NWS STORM PREDICTION CENTER NORMAN OK
0535 PM CST FRI DEC 25 2015

AREAS AFFECTED...SRN/CNTRL SD

CONCERNING...HEAVY SNOW 

VALID 252335Z - 260330Z

SUMMARY...SNOWFALL RATES MAY LOCALLY APPROACH 1 INCH PER HOUR THIS
EVENING ACROSS PARTS OF SRN AND CNTRL SD.

DISCUSSION...RADAR TRENDS SHOW INCREASING AREAL COVERAGE OF
PRECIPITATION ACROSS NRN NEB SPREADING INTO SRN SD. SFC OBS ACROSS
THE AREA INDICATE TEMPERATURES ARE GENERALLY RANGING BETWEEN 31-34
F...BUT WET-BULB COOLING SHOULD RESULT IN WIDESPREAD
NEAR-TO-SUB-FREEZING TEMPERATURES IN THE NEXT COUPLE HRS. ALTHOUGH
NOT PARTICULARLY STRONG...NAM/RAP FORECAST SOUNDINGS DEPICT UVV/S
WILL BE MAXIMIZED WITHIN A MODESTLY DEEP DENDRITIC GROWTH
LAYER...WITH VERTICAL ASCENT ENHANCED BY UPPER DIVERGENCE E OF A
CNTRL HIGH PLAINS SHORTWAVE UPPER TROUGH AND ISENTROPIC ASCENT IN
THE LOW-LEVELS. THIS COULD SUPPORT PERIODS OF SNOWFALL RATES
APPROACHING 1 INCH PER HR...WITH THE W-E ORIENTATION OF THE EXPECTED
HIGHEST SNOWFALL RATES GRADUALLY SHIFTING NWD WITH TIME.

..ROGERS.. 12/25/2015

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...FSD...ABR...UNR...

LAT...LON   44319818 44029753 43609698 43189744 43019828 43050022
            43090169 43530206 43970167 44140061 44339921 44319818 

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