AREAS AFFECTED...NERN IL THROUGH NRN IND
CONCERNING...HEAVY SNOW
VALID 051936Z - 052330Z
SUMMARY...AREAS OF MODERATE TO LOCALLY HEAVY SNOW WILL PERSIST
ACROSS NERN IL THE REMAINDER OF THE AFTERNOON...WITH HEAVIER SNOWS
GRADUALLY DEVELOPING EWD THROUGH NCTNRL AND NRN IND LATER THIS
AFTERNOON INTO THE EVENING. SNOWFALL RATES COULD LOCALLY EXCEED 1
INCH PER HOUR AT TIMES.
DISCUSSION...INVERTED SFC TROUGH AXIS PERSISTS FROM NRN IL SEWD
THROUGH CNTRL IND. SFC LOW OVER KY SHOULD DEEPEN AS IT MOVES NEWD
THROUGH THE OH VALLEY WITHIN ZONE OF UPPER DIVERGENCE ASSOCIATED
WITH EJECTING NEGATIVE TILT SHORTWAVE TROUGH. AS SFC LOW DEVELOPS
EWD...AXIS OF DEFORMATION WILL SLOWLY PIVOT COUNTERCLOCKWISE AND
BECOME MORE E-W ORIENTED ACROSS NRN PORTIONS OF THE OH VALLEY. THE
CORRIDOR OF DIVERGENCE ALOFT WILL CONTINUE TO INTERACT WITH
DEFORMATION AXIS RESULTING IN EWD EXPANSION OF ZONE OF FRONTOGENETIC
FORCING AND DEEPER ASCENT THROUGH CNTRL AND NRN IND THIS AFTERNOON
INTO THE EARLY EVENING. THIS PROCESS WILL LIKELY RESULT IN
OCCASIONAL HEAVY SNOWFALL RATES PERSISTING FROM NERN IL THIS
AFTERNOON...EXPANDING THROUGH NCNTRL AND NRN IND THIS AFTERNOON INTO
THE EARLY EVENING.
..DIAL.. 03/05/2013
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...IWX...IND...LOT...
LAT...LON 42368795 41628736 41878571 41228484 40178497 39648617
40988799 42298864 42368795
