Saturday, February 4, 2012

MESO: Mesoscale Discussion 0111

ACUS11 KWNS 040928
SWOMCD
SPC MCD 040927
IAZ000-MOZ000-NEZ000-KSZ000-041330-

MESOSCALE DISCUSSION 0111
NWS STORM PREDICTION CENTER NORMAN OK
0327 AM CST SAT FEB 04 2012

AREAS AFFECTED...ERN NEB/WRN IA

CONCERNING...HEAVY SNOW

VALID 040927Z - 041330Z

INCH AN HOUR SNOWFALL RATES /GREATER IN THUNDERSNOW/ WILL GRADUALLY
TAPER OFF LATER THIS MORNING. CESSATION OF HEAVIER RATES IS ALREADY
ONGOING ACROSS CNTRL NEB.

HEAVY SNOWFALL HAS DEVELOPED IN THE FAVORED LEFT EXIT REGION OF A
MID-UPPER LEVEL JET...NOW QUICKLY PROGRESSING NEWD. WITH THE
LESSENING OF MORE SUPPORTIVE VERTICAL MOTION...RATES SHOULD
GRADUALLY BEGIN TO TAPER OFF THIS MORNING. UNTIL THEN...WEAK MID
LEVEL INSTABILITY /ROOTED AT 600-450 MB/ HAS SUPPORTED THE
OCCASIONAL LIGHTNING STRIKE ACROSS SRN NEB. THIS AREA OF ENHANCED
CONVECTIVE SNOWFALL POTENTIAL WILL SHIFT INTO SRN IA OVER THE NEXT
FEW HOURS. BRIEF BURSTS OF HEAVIER SNOW REMAIN POSSIBLE IN
THUNDERSNOW.

..HURLBUT.. 02/04/2012

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

ATTN...WFO...DMX...EAX...OAX...TOP...GID...

LAT...LON 41719543 41339465 40749509 39989670 39829767 40239849
41049753 41439676 41719543

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