Low pressure moved up the Ohio Valley the evening of January 20, allowing a mixture of winter precipitation to fall across central Indiana. Across the northern third of the area, mostly snow fell. Across the central third, mainly sleet with a mix of snow and freezing rain fell. Across the south, mainly freezing rain fell. Snowfall across the north averaged 1 to 3 inches, with around 1 inch of sleet and snow across the central part of the area. Across the south, 1 to 2 tenths of an inch of freezing rain accumulated. Travel became hazardous across much of the area during the evening of the 20th into the morning of the 21st.
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Above are maps of 24 hour snowfall (left) and snow depth (right), both valid at 7:00 AM January 21.
Below are reports of precipitation received by the NWS Indianapolis:
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1258 PM EST SAT JAN 21 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 PM FREEZING RAIN BLOOMFIELD 39.03N 86.94W
01/20/2012 U0.00 INCH GREENE IN AMATEUR RADIO
NUMEROUS ACCIDENTS OCCURRING DUE TO ROAD ICING ON HIGHWAY
54.
0810 PM FREEZING RAIN BLOOMINGTON 39.17N 86.52W
01/20/2012 U0.00 INCH MONROE IN AMATEUR RADIO
RELAYED REPORT FROM COUNTY SHERIFF INDICATES SOLID ICE ON
COUNTY ROADS. SEVERAL REPORTS OF ACCIDENTS COMING IN.
REFERENCE CITY IS APPROX/GENERALIZED.
0835 PM FREEZING RAIN 3 S INDIANAPOLIS 39.73N 86.15W
01/20/2012 U0.00 INCH MARION IN PUBLIC
SLICK ROADS ON AND AROUND SOUTHPORT
0850 PM FREEZING RAIN COLUMBUS 39.21N 85.91W
01/20/2012 U0.00 INCH BARTHOLOMEW IN PUBLIC
ICY ROADS
0850 PM FREEZING RAIN TERRE HAUTE 39.47N 87.38W
01/20/2012 U0.00 INCH VIGO IN BROADCAST MEDIA
RELAYED HAM RADIO REPORT. ROADWAYS IN TERRE HAUTE AND THE
COUNTY AS A WHOLE ARE ICE COVERED AND SLICK. POLICE ARE
WORKING NUMEROUS ACCIDENTS.
0850 PM SNOW WEST LAFAYETTE 40.44N 86.91W
01/20/2012 M2.1 INCH TIPPECANOE IN TRAINED SPOTTER
NEW SNOW OVER PAST 2 HOURS...STORM TOTAL 2.2
0851 PM SNOW LAFAYETTE 40.41N 86.87W
01/20/2012 M2.2 INCH TIPPECANOE IN TRAINED SPOTTER
STORM TOTAL THUS FAR.
0855 PM FREEZING RAIN PARAGON 39.39N 86.56W
01/20/2012 E0.10 INCH MORGAN IN FIRE DEPT/RESCUE
NUMEROUS ACCIDENTS AND EXTREME DIFFICULTY DRIVING
0900 PM SNOW 2 NW MUNCIE 40.22N 85.42W
01/20/2012 M0.5 INCH DELAWARE IN TRAINED SPOTTER
0.4 INCHES OF SLEET AND 0.1 INCHES OF SNOW.
0905 PM FREEZING RAIN ODON 38.84N 86.99W
01/20/2012 E0.10 INCH DAVIESS IN PUBLIC
ROADS VERY SLICK
0910 PM SNOW 2 W WEST LAFAYETTE 40.44N 86.95W
01/20/2012 U2.5 INCH TIPPECANOE IN PUBLIC
1001 PM FREEZING RAIN SHELBYVILLE 39.52N 85.78W
01/20/2012 E0.10 INCH SHELBY IN TRAINED SPOTTER
0.10 INCH OF FREEZING RAIN IN THE LAST TWO HOURS.
1008 PM FREEZING RAIN SEYMOUR 38.96N 85.89W
01/20/2012 M0.10 INCH JACKSON IN BROADCAST MEDIA
1024 PM SNOW LAFAYETTE 40.41N 86.87W
01/20/2012 M3.0 INCH TIPPECANOE IN TRAINED SPOTTER
STORM TOTAL.
1025 PM FREEZING RAIN BEDFORD 38.86N 86.49W
01/20/2012 E0.10 INCH LAWRENCE IN PUBLIC
ROADS AND SIDEWALKS ARE ICY.
1148 PM SLEET ANDERSON 40.09N 85.69W
01/20/2012 M0.60 INCH MADISON IN TRAINED SPOTTER
AMOUNT ACCUMULATED BETWEEN 1748 EST AND 2348 EST.
1215 AM SLEET 2 S CASTLETON 39.92N 85.49W
01/21/2012 M0.50 INCH HENRY IN CO-OP OBSERVER
0200 AM SLEET 1 S INDIANAPOLIS INT`L 39.71N 86.29W
01/21/2012 M0.60 INCH MARION IN OFFICIAL NWS OBS
STORM TOTAL. MAINLY SLEET WITH A LITTLE BIT OF SNOW MIXED
IN.
0436 AM SNOW MUNCIE 40.20N 85.39W
01/21/2012 M1.4 INCH DELAWARE IN TRAINED SPOTTER
STORM TOTAL...SNOW AND SLEET
0520 AM FREEZING RAIN BEDFORD 38.86N 86.49W
01/21/2012 E0.20 INCH LAWRENCE IN PUBLIC
FREEZING RAIN HAS ENDED. HOWEVER SOME GLAZING HAD
OCCURRED ON SOME SURFACES INCLUDING CARS. ONE TO TWO
TENTHS OF AN INCH THCIK.
0700 AM FREEZING RAIN 7 S SPENCER 39.19N 86.77W
01/21/2012 M0.20 INCH OWEN IN TRAINED SPOTTER
STORM TOTAL. ICE ON POWER LINES AND TREES.
0719 AM SNOW ANDERSON 40.09N 85.69W
01/21/2012 M1.6 INCH MADISON IN TRAINED SPOTTER
0.6 INCH SLEET AND 1 INCH OF SNOW.
0909 AM FREEZING RAIN BROOKLYN 39.54N 86.37W
01/21/2012 M0.10 INCH MORGAN IN CO-OP OBSERVER
STORM TOTAL
&&
THE TOTALS BELOW ARE SEPARATED INTO SNOW...AND ICE AND SLEET
CATEGORIES...THEN BY AMOUNT...AND ARE NOT NECESSARILY THE
FINAL AMOUNT FOR EACH LOCATION.
SNOW REPORTS LISTED BY AMOUNT
INCHES LOCATION ST COUNTY TIME
------ ----------------------- -- -------------- -------
3.00 LAFAYETTE IN TIPPECANOE 1024 PM
STORM TOTAL.
2.50 2 W WEST LAFAYETTE IN TIPPECANOE 0910 PM
2.20 LAFAYETTE IN TIPPECANOE 0851 PM
STORM TOTAL THUS FAR.
2.10 WEST LAFAYETTE IN TIPPECANOE 0850 PM
NEW SNOW OVER PAST 2 HOURS...STORM TOTAL 2.2
1.60 ANDERSON IN MADISON 0719 AM
0.6 INCH SLEET AND 1 INCH OF SNOW.
1.40 MUNCIE IN DELAWARE 0436 AM
STORM TOTAL...SNOW AND SLEET
0.50 2 NW MUNCIE IN DELAWARE 0900 PM
0.4 INCHES OF SLEET AND 0.1 INCHES OF SNOW.
SLEET AND FREEZING RAIN REPORTS LISTED BY AMOUNT
INCHES LOCATION ST COUNTY TIME
------ ----------------------- -- -------------- -------
0.60 1 S INDIANAPOLIS INT`L IN MARION 0200 AM
STORM TOTAL. MAINLY SLEET WITH A LITTLE BIT
OF SNOW MIXED IN.
0.60 ANDERSON IN MADISON 1148 PM
AMOUNT ACCUMULATED BETWEEN 1748 EST AND 2348
EST.
0.50 2 S CASTLETON IN HENRY 1215 AM
0.20 7 S SPENCER IN OWEN 0700 AM
STORM TOTAL. ICE ON POWER LINES AND TREES.
0.20 BEDFORD IN LAWRENCE 0520 AM
FREEZING RAIN HAS ENDED. HOWEVER SOME GLAZING
HAD OCCURRED ON SOME SURFACES INCLUDING CARS.
ONE TO TWO TENTHS OF AN INCH THCIK.
0.10 BROOKLYN IN MORGAN 0909 AM
STORM TOTAL
0.10 BEDFORD IN LAWRENCE 1025 PM
ROADS AND SIDEWALKS ARE ICY.
0.10 SEYMOUR IN JACKSON 1008 PM
0.10 SHELBYVILLE IN SHELBY 1001 PM
0.10 INCH OF FREEZING RAIN IN THE LAST TWO
HOURS.
0.10 ODON IN DAVIESS 0905 PM
ROADS VERY SLICK
0.10 PARAGON IN MORGAN 0855 PM
NUMEROUS ACCIDENTS AND EXTREME DIFFICULTY
DRIVING
0.00 TERRE HAUTE IN VIGO 0850 PM
RELAYED HAM RADIO REPORT. ROADWAYS IN TERRE
HAUTE AND THE COUNTY AS A WHOLE ARE ICE
COVERED AND SLICK. POLICE ARE WORKING
NUMEROUS ACCIDENTS.
0.00 COLUMBUS IN BARTHOLOMEW 0850 PM
ICY ROADS
0.00 3 S INDIANAPOLIS IN MARION 0835 PM
SLICK ROADS ON AND AROUND SOUTHPORT
0.00 BLOOMINGTON IN MONROE 0810 PM
RELAYED REPORT FROM COUNTY SHERIFF INDICATES
SOLID ICE ON COUNTY ROADS. SEVERAL REPORTS OF
ACCIDENTS COMING IN. REFERENCE CITY IS
APPROX/GENERALIZED.
0.00 BLOOMFIELD IN GREENE 0730 PM
NUMEROUS ACCIDENTS OCCURRING DUE TO ROAD
ICING ON HIGHWAY 54.
$$
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