MESO: Mesoscale Discussion 0148

ACUS11 KWNS 230301
SWOMCD
SPC MCD 230301
OHZ000-INZ000-ILZ000-230700-

MESOSCALE DISCUSSION 0148
NWS STORM PREDICTION CENTER NORMAN OK
0901 PM CST SAT FEB 22 2014

AREAS AFFECTED...PORTIONS OF CENTRAL IL...CENTRAL/NRN IND...NWRN OH

CONCERNING...WINTER MIXED PRECIPITATION

VALID 230301Z - 230700Z

SUMMARY...MIXED PRECIPITATION TYPES WILL CHANGE TO ALL SNOW WITHIN A
NARROW ZONE IN WHICH SNOW RATES MAY APPROACH ONE INCH/HR FOR A
COUPLE OF HOURS. PRECIPITATION WILL DIMINISH IN INTENSITY OR END
FROM WEST TO EAST IN THE 05Z-08Z TIME FRAME.

DISCUSSION...A NARROW ZONE OF MIXED PRECIPITATION TYPES EXTENDS
ACROSS PORTIONS OF CENTRAL IL AND CENTRAL/NRN IND AT 0230Z WITHIN A
BROADLY CYCLONIC MID AND UPPER LEVEL FLOW REGIME. FRONTOGENETIC
FORCING WITHIN THE SATURATED 850 MB-700 MB LAYER WILL CONTINUE TO
SUPPORT A NARROW BAND OF PRECIPITATION. FORECAST SOUNDINGS SUGGEST A
CONTINUED TRANSITION FROM RAIN TO SNOW WITH SNOW RATES OF ONE
INCH/HR...LOCALLY HIGHER...POSSIBLE FOR A COUPLE OF HOURS AT ANY
GIVEN LOCATION. FORECAST SOUNDINGS ALSO SUGGEST DRIER AIR WILL
OVERSPREAD THE AREA IN THE 05Z-08Z TIME FRAME RESULTING IN
PRECIPITATION ENDING OR DIMINISHING IN INTENSITY FROM WEST TO EAST.

..BUNTING.. 02/23/2014

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

ATTN...WFO...CLE...ILN...IWX...IND...LOT...ILX...LSX...

LAT...LON 39569088 40768730 41118501 41248398 40738384 40298530
39188910 39069061 39569088

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