ACUS11 KWNS 220707
SWOMCD
MESOSCALE DISCUSSION 1932
NWS STORM PREDICTION CENTER NORMAN OK
0107 AM CST SAT NOV 22 2014
AREAS AFFECTED...SE WI...NE IL...NRN-CNTRL IND...SRN LOWER MI...WRN
OH
CONCERNING...FREEZING RAIN
VALID 220707Z - 221200Z
SUMMARY...THE OCCURRENCE OF FREEZING RAIN IS EXPECTED TO INCREASE
EARLY THIS MORNING AS SHOWER ACTIVITY MOVES NEWD FROM NE IL AND SW
WI INTO SW LOWER MI AND NRN IND OVER THE NEXT 2 TO 4 HOURS. FREEZING
RAIN RATES WILL LIKELY EXCEED 0.05 INCHES PER HOUR IN SOME
LOCATIONS.
DISCUSSION...THE LATEST RADAR TRENDS SHOW SCATTERED SHOWERS FROM SRN
WI SWD INTO NRN IL...ERN IL AND WRN IND. THIS ACTIVITY IS LOCATED
JUST AHEAD OF A SHORTWAVE TROUGH EVIDENT ON WATER VAPOR IMAGERY.
LARGE-SCALE ASCENT ASSOCIATED WITH THE SHORTWAVE TROUGH AND LIFT
ENHANCED BY A LOW-LEVEL SPEED MAX...CURRENTLY MOVING NEWD ACROSS THE
ST LOUIS AREA...WILL HELP PRECIPITATION TO EXPAND IN COVERAGE AND
MOVE EWD ACROSS NRN IND AND LAKE MI OVER THE NEXT FEW HOURS. AT THE
SFC...TEMPS ARE ALREADY IN THE MID TO UPPER 20S F ACROSS SW LOWER MI
AND NE IND WHERE THE GREATEST POTENTIAL FOR FREEZING RAIN IS
EXPECTED LATER THIS MORNING. MANY AREAS SHOULD RECEIVE FREEZING RAIN
RATES OF NEAR 0.05 INCHES PER HOUR. AREAS FROM NEAR GRAND RAPIDS MI
SWD TO THE VICINITY OF FORT WAYNE IND COULD RECEIVE LOCALLY HIGHER
AMOUNTS WITH FREEZING RAIN RATES APPROACHING 0.10 PER HOUR POSSIBLE.
..BROYLES/MEAD.. 11/22/2014
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...CLE...ILN...DTX...IWX...GRR...IND...LOT...ILX...
MKX...
LAT...LON 41738373 42858403 43568468 43758548 43748633 43298756
42998838 42518882 41888881 41118847 40108755 39298639
39288476 39698385 40668376 41738373
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