ZCZC NFDSPENES ALL
SPENES
OHZ000-MIZ000-INZ000-WIZ000-ILZ000-IAZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 12/28/07 1810Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-12 1745Z  HANNA
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LOCATION...OHIO...MICHIGAN...INDIANA...WISCONSIN...
LOCATION...ILLINOIS...IOWA...
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ATTN WFOS...CLE...DTX...APX...IWX...GRR...IND...MQT...GRB...LOT...
ATTN WFOS...MKX...DVN...
ATTN RFCS...OHRFC...NCRFC...
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EVENT...LOCALLY HEAVY SNOW
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SATELLITE ANALYSIS AND TRENDS...LATEST WATER VAPOR IMAGERY SHOWS THAT
NEARLY CLOSED OFF MID LEVEL SYSTEM CONTINUES TO RAPIDLY RACE TO THE
NORTHEAST AND WAS MOST RECENTLY CENTERED OVER CNTRL IA.  GOES HIGH
DENSITY WINDS SHOW THAT A VIGOROUS MID AND UPPER LEVEL JET (160KT)
HAS DEVELOPED AT THE BASE OF THE SHORTWAVE TROF.  EXIT REGION OF UL
TROF BASED JET STREAK APPEARS AS THOUGH IT IS BEGINNING TO COUPLE WITH
DEVELOPING ANTICYLONICALLY CURVED JET STREAK IN DOWNSTREAM RIDGE AXIS
AND THIS IS HELPING TO INCREASE LARGE SCALE UVM OVER THE ENTIRE REGION
PER RECENT CLOUD TOP COOLING OVER WI.
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VERY WELL DEFINED SW TO NE ORIENTED BAND STRUCTURES SHOWING UP ON VISIBLE
IMAGERY LATE THIS MORNING AND THIS IS INDICATIVE OF THE FRONTOGENETIC
FORCING IN THE OVERALL LARGER SCALE DEFORMATION PATTERN.  CURRENTLY IT
APPEARS AS THOUGH THE BEST BANDED STRUCTURES HAVE BEEN FROM THE VIC OF N
IL THROUGH SE WI AND INTO NORTHERN LOWER MI.  GOES BASED DENDRITIC SNOW
GROWTH ALGORITHM SHOWS THAT BEST COMBINATION OF SATURATED ASCENT IN THE
DENDRITIC SNOW GROWTH ZONE OCCURRING IN THIS REGION AS WELL SO WOULD THINK
SNOWFALL RATES OF 1-2"/HR COULD BE QUITE COMMON IN THE MOST INTENSE BANDS.
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KEEPING AN EYE ON TWO DRY SLOTS ON WATER VAPOR IMAGERY TO AID IN
DESTABILIZATION FOR BEST SNOWFALL, THOSE BEING THE DRY SLOT NOW WORKING
ITS WAY INTO NORTHERN IL AND ALSO THE ONE WORKING ITS WAY UP THE WESTERN
OHIO RIVER VALLEY.  TRAJECTORIES OF THESE FEATURES ALONG WITH ANTICIPATED
TRACK OF 85H CNTR CURRENTLY OVER E IA WOULD TEND TO FAVOR THE HEAVIEST
SNOWFALL AXIS SOMEWHERE APPROXIMATELY ALONG AN AXIS FROM SFY TO ETB
TO APN.  SECOND DRY SLOT COULD POSSIBLY BRING A SECONDARY HEAVY SNOWFALL
BURST FROM VPZ TO FNT OVER THE NEXT FEW HOURS AS WELL BUT WITH ANTICIPATED
TRACK OF 85H FEATURE BELIEVE THIS SNOWFALL SHOULD NOT BE AS PROLONGED
AS TO WHAT OCCURS FURTHER NORTH AND WEST.  WILL CONTINUE TO MONITOR.
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SEE NCEP HPC DISCUSSION AND QPF/S FOR FORECAST.
....NESDIS IS A MEMBER OF 12 PLANET....
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SSD/SAB WEB ADDRESS FOR PRECIP ESTIMATES:
HTTP://WWW.SSD.NOAA.GOV/PS/PCPN/
...ALL LOWER CASE EXCEPT /PS/PCPN/
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LAT...LON 4640 8242 4465 8028 4326 8119 4206 8269 4119 8421 4094
8548 4073 8660 4091 8745 4126 8785 4123 8944 4174 9038
4293 9022 4474 8840 4560 8654
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