Preliminary - Sunday's Wintry Mix Storm Summary

The following is a preliminary summary from Sunday's Wintry Mix Storm.  Expect more information and enhancements to this story throughout the day today.


Meteorological Overview Storm Reports

Freezing Rain Accumulations

Snow and Sleet Accumulations

Submit a Report


Meteorological Overview

An area of low pressure lifting through the Upper Mississippi River Valley region Sunday January 27th lifted an unseasonably mild and moist airmass from the Gulf of Mexico above cold air in place. The result was a variety of precipitation across the region. 

  • South of Interstate 90, the air aloft stayed warm enough to mostly result in rain, which then turned to freezing rain as it hit the cold air at the surface. Ice accumulations ranged from 1/10 to 3/10, with a few higher amounts.
  • North of Interstate 90, the air both aloft and at the surface was allowed to stay cold, leading to mostly snow and sleet on Sunday.  Accumulations of snow and sleet were mostly between 2 and 4 inches.
  • Along the Interstate 90 corridor, the battle of the temperatures aloft was present, yielding periods of freezing rain, sleet and snow.  Accumulations of snow and sleet were upwards of an inch, with ice accumulations up to 1/4 inch.

During the late afternoon and evening hours, the clouds lost their ability to produce snowflakes due to a surge of dry air that came in. This resulted in the precipitation everywhere changing to freezing drizzle.  Once the low pressure area passed to the east Sunday night, the freezing drizzle ended.


Storm Reports 

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LA CROSSE WI
933 PM CST SUN JAN 27 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     FREEZING RAIN    CHARLES CITY            43.07N 92.68W
01/27/2013  U0.00 INCH       FLOYD              IA   LAW ENFORCEMENT

            MIXTURE OF FREEZING RAIN AND SLEET. ROADWAYS BEGINNING TO
            BECOME COVERED.

0810 AM     FREEZING RAIN    OSAGE                   43.28N 92.81W
01/27/2013  U0.00 INCH       MITCHELL           IA   LAW ENFORCEMENT

            SLEET/FREEZING RAIN STARTED. ROADS BECOMING COVERED.

0812 AM     FREEZING RAIN    NASHUA                  42.95N 92.54W
01/27/2013  U0.00 INCH       CHICKASAW          IA   LAW ENFORCEMENT

            FREEZING RAIN REPORTED - ROADS SLICK

0835 AM     FREEZING RAIN    OELWEIN                 42.68N 91.91W
01/27/2013  U0.00 INCH       FAYETTE            IA   AMATEUR RADIO

            FREEZING RAIN REPORTED. ROADS BECOMING ICY.

0908 AM     FREEZING RAIN    AUSTIN                  43.67N 92.97W
01/27/2013  U0.00 INCH       MOWER              MN   BROADCAST MEDIA

            GLAZE OF ICE REPORTED IN AUSTIN

0912 AM     FREEZING RAIN    AUSTIN                  43.67N 92.97W
01/27/2013  U0.00 INCH       MOWER              MN   LAW ENFORCEMENT

            REPORTS OF ROLL OVER ACCIDENTS ON INTERSTATE 90 EAST OF
            AUSTIN DUE TO GLAZE OF ICE.

0918 AM     FREEZING RAIN    DECORAH                 43.31N 91.79W
01/27/2013  U0.00 INCH       WINNESHIEK         IA   LAW ENFORCEMENT

            MAIN ROADS ICE AND SLEET COVERED. SEVERAL ACCIDENTS
            REPORTED ON STATE HWY 9

0930 AM     SNOW             DE SOTO                 43.43N 91.20W
01/27/2013  M0.1 INCH        VERNON             WI   CO-OP OBSERVER

            STILL SNOWING.

1005 AM     FREEZING RAIN    WEST CONCORD            44.15N 92.90W
01/27/2013  M0.02 INCH       DODGE              MN   BROADCAST MEDIA

            ICE COVERED SURFACES AND TREES.

1016 AM     FREEZING RAIN    CRESCO                  43.37N 92.12W
01/27/2013  U0.00 INCH       HOWARD             IA   BROADCAST MEDIA

            GLAZE OF ICE

1016 AM     FREEZING RAIN    GRAND MEADOW            43.71N 92.57W
01/27/2013  U0.00 INCH       MOWER              MN   BROADCAST MEDIA

            GLAZE OF ICE

1016 AM     FREEZING RAIN    DOVER                   43.97N 92.13W
01/27/2013  U0.00 INCH       OLMSTED            MN   BROADCAST MEDIA

            GLAZE OF ICE

1049 AM     FREEZING RAIN    7 NE DECORAH            43.38N 91.69W
01/27/2013  M0.03 INCH       WINNESHIEK         IA   CO-OP OBSERVER

            SLICK AND ICE COVERED ROADS DUE TO MIX OF SNOW AND SLEET
            THEN FREEZING RAIN.

1053 AM     SNOW             3 E LA CROSSE           43.83N 91.17W
01/27/2013  M0.2 INCH        LA CROSSE          WI   DEPT OF HIGHWAYS

            MIXTURE OF SNOW AND SLEET CAUSING A FEW ACCIDENTS AND
            SLIDE OFFS ON HWY 33

1100 AM     FREEZING RAIN    KASSON                  44.03N 92.75W
01/27/2013  E0.05 INCH       DODGE              MN   LAW ENFORCEMENT

            REPORTS OF TREE LIMBS DOWN. ALSO ROADS ARE ICE COVERED.

1105 AM     FREEZING RAIN    ROCKFORD                43.05N 92.95W
01/27/2013  M0.04 INCH       FLOYD              IA   LAW ENFORCEMENT

            OFFICERS REPORT ROADWAYS AND OTHER SURFACES GLAZED OVER
            WITH MINOR ACCIDENTS

1112 AM     SNOW             VIROQUA                 43.56N 90.89W
01/27/2013  M0.1 INCH        VERNON             WI   LAW ENFORCEMENT

            MOST ROADS SNOW AND ICE COVERED

1122 AM     FREEZING RAIN    AUSTIN                  43.67N 92.97W
01/27/2013  M0.12 INCH       MOWER              MN   LAW ENFORCEMENT

            ESTIMATED 1/8 INCH OF ICE BUILD UP ON ROADS...TREES...AND
            OTHER SURFACES. NUMEROUS ACCIDENTS ACROSS COUNTY

1125 AM     FREEZING RAIN    SPARTA                  43.94N 90.81W
01/27/2013  U0.00 INCH       MONROE             WI   PUBLIC

            MIXTURE OF FREEZING RAIN...SLEET AND SNOW. MOST SURFACES
            COVERED AND SLIPPERY.

1132 AM     FREEZING RAIN    WINONA                  44.05N 91.66W
01/27/2013  U0.00 INCH       WINONA             MN   LAW ENFORCEMENT

            MIXTURE OF SNOW SLEET AND FREEZING RAIN CAUSING NUMEROUS
            ACCIDENTS MAINLY ON INTERSTATE 90

1138 AM     FREEZING RAIN    ROCHESTER               44.01N 92.48W
01/27/2013  M0.05 INCH       OLMSTED            MN   TRAINED SPOTTER

            ROADWAYS HAZARDOUS. TRAFFIC ON HWY 52 SLOWED
            SIGNIFICANTLY. PRECIPITATION TYPE MOSTLY FREEZING
            RAIN...MIXING WITH SLEET AT TIMES. TREES AND OTHER
            SURFACES HAVE GLAZE.

1200 PM     FREEZING RAIN    LA CROSSE               43.83N 91.23W
01/27/2013  M0.03 INCH       LA CROSSE          WI   CO-OP OBSERVER

            LA CROSSE AIRPORT

1200 PM     FREEZING RAIN    WAUKON                  43.27N 91.48W
01/27/2013  E0.10 INCH       ALLAMAKEE          IA   LAW ENFORCEMENT

            ALL ROADS ICE COVERED. SHERIFFS AND LAW ENFORECEMENT ARE
            ADVISING NO TRAVEL IN ALLAMAKEE COUNTY UNLESS AN
            EMERGENCY.

1222 PM     FREEZING RAIN    WINONA                  44.05N 91.66W
01/27/2013  M0.10 INCH       WINONA             MN   PUBLIC

            FREEZING RAIN STARTING TO COAT TREES AND OTHER SURFACES.


1222 PM     FREEZING RAIN    4 N STEWARTVILLE        43.92N 92.49W
01/27/2013  M0.15 INCH       OLMSTED            MN   CO-OP OBSERVER

            MIXTURE OF FREEZING RAIN AND SLEET

1236 PM     FREEZING RAIN    AUSTIN                  43.67N 92.97W
01/27/2013  M0.25 INCH       MOWER              MN   BROADCAST MEDIA

0100 PM     FREEZING RAIN    CALEDONIA               43.63N 91.50W
01/27/2013  E0.10 INCH       HOUSTON            MN   LAW ENFORCEMENT

            MIXTURE OF FREEZING RAIN...SLEET...AND SNOW CAUSING
            ROADWAYS TO BE VERY SLIPPERY ESPECIALLY INTERSTATE 90 AND
            HIGHWAY 53

0111 PM     FREEZING RAIN    2 S HOLMEN              43.93N 91.26W
01/27/2013  M0.13 INCH       LA CROSSE          WI   NWS EMPLOYEE

0111 PM     SNOW             DE SOTO                 43.43N 91.20W
01/27/2013  M0.2 INCH        VERNON             WI   CO-OP OBSERVER

            CURRENTLY FREEZING RAIN

0115 PM     FREEZING RAIN    SPILLVILLE              43.20N 91.95W
01/27/2013  M0.20 INCH       WINNESHIEK         IA   TRAINED SPOTTER

            ICE COVERING ALL SURFACES. HWY 53 IS COVERED AND
            EXTREMELY SLICK. LESS TRAVEL COUNTY ROADS ARE IMPASSABLE.
            WINDS ARE INCREASING.

0155 PM     FREEZING RAIN    BLACK RIVER FALLS       44.30N 90.85W
01/27/2013  U0.00 INCH       JACKSON            WI   LAW ENFORCEMENT

            FREEZING RAIN AND SLEET EARLIER HAS BECOME MODERATE SNOW.
            ROADWAYS SLICK AND ICE COVERED WITH ACCIDENTS REPORTED ON
            INTERSTATE 94.

0158 PM     FREEZING RAIN    MAUSTON                 43.80N 90.08W
01/27/2013  U0.00 INCH       JUNEAU             WI   LAW ENFORCEMENT

            EARLIER SLEET HAS BECOME MODERATE SNOW. SLIDE OFFS
            REPORTED ON INTERSTATE 90.

0231 PM     SNOW             MILLSTON                44.20N 90.65W
01/27/2013  M2.0 INCH        JACKSON            WI   TRAINED SPOTTER

            STILL HEAVY SNOW.

0314 PM     SNOW             4 N NEILLSVILLE         44.62N 90.59W
01/27/2013  M3.0 INCH        CLARK              WI   TRAINED SPOTTER

            STILL SNOWING HEAVILY

0339 PM     FREEZE           AUSTIN                  43.67N 92.97W
01/27/2013  M0.20 F          MOWER              MN   LAW ENFORCEMENT

            REPORTS OF POWER LINES COMING DOWN IN AUSTIN

0340 PM     FREEZING RAIN    AUSTIN                  43.67N 92.97W
01/27/2013  U0.00 INCH       MOWER              MN   LAW ENFORCEMENT

            REPORTS OF POWER LINES DOWN IN AUSTIN. ALSO RELAYED BY
            BROADCAST MEDIA FACEBOOK POST.

0346 PM     FREEZING RAIN    AUSTIN                  43.67N 92.97W
01/27/2013  E0.25 INCH       MOWER              MN   BROADCAST MEDIA

            ESTIMATED BETWEEN 2/10 TO 1/4

0448 PM     SNOW             VEEFKIND                44.70N 90.39W
01/27/2013  E3.5 INCH        CLARK              WI   PUBLIC

0452 PM     FREEZING RAIN    SPRING VALLEY           43.69N 92.39W
01/27/2013  E0.10 INCH       FILLMORE           MN   PUBLIC

            FREEZING RAIN DURATION 24 HOURS

0456 PM     FREEZING RAIN    WEST UNION              42.96N 91.81W
01/27/2013  E0.30 INCH       FAYETTE            IA   LAW ENFORCEMENT

            EMERGENCY MANAGEMENT REPORT OF NUMEROUS ACCIDENTS ACROSS
            THE COUNTY. FREEZING RAIN DURATION 24 HOURS.

0503 PM     FREEZING RAIN    LA CRESCENT             43.83N 91.30W
01/27/2013  E0.10 INCH       HOUSTON            MN   PUBLIC

            FREEZING RAIN DURATION 24 HOURS

0518 PM     FREEZING RAIN    WEST SALEM              43.90N 91.08W
01/27/2013  M0.10 INCH       LA CROSSE          WI   NWS EMPLOYEE

0518 PM     SLEET            WEST SALEM              43.90N 91.08W
01/27/2013  M0.20 INCH       LA CROSSE          WI   NWS EMPLOYEE

0523 PM     SNOW             NEILLSVILLE             44.56N 90.59W
01/27/2013  E3.0 INCH        CLARK              WI   LAW ENFORCEMENT

0527 PM     SNOW             MEDFORD                 45.14N 90.35W
01/27/2013  E2.0 INCH        TAYLOR             WI   LAW ENFORCEMENT

0541 PM     SNOW             1 W BLACK RIVER FALLS   44.30N 90.87W
01/27/2013  E2.0 INCH        JACKSON            WI   LAW ENFORCEMENT

            SNOW DURATION 24 HOURS

0546 PM     FREEZING RAIN    HARMONY                 43.56N 92.01W
01/27/2013  E0.25 INCH       FILLMORE           MN   PUBLIC

            FREEZING RAIN DURATION 24 HOURS.

0550 PM     SNOW             MONDOVI                 44.57N 91.67W
01/27/2013  E2.0 INCH        BUFFALO            WI   PUBLIC

            SNOW DURATION 24 HOURS

0600 PM     FREEZING RAIN    1 WSW PRAIRIE DU CHIEN  43.04N 91.16W
01/27/2013  E0.00 INCH       CRAWFORD           WI   LAW ENFORCEMENT

            FREEZING RAIN DURATION 24 HOURS

0619 PM     FREEZING RAIN    4 N STEWARTVILLE        43.92N 92.49W
01/27/2013  E0.13 INCH       OLMSTED            MN   PUBLIC

            FREEZING RAIN DURATION 6 HOURS

0619 PM     FREEZING RAIN    2 E LA CROSSE           43.83N 91.19W
01/27/2013  E0.00 INCH       LA CROSSE          WI   OFFICIAL NWS OBS

0658 PM     FREEZING RAIN    4 NNE STODDARD          43.71N 91.19W
01/27/2013  E0.00 INCH       VERNON             WI   NWS EMPLOYEE

            FREEZING RAIN DURATION 24 HOURS

0703 PM     FREEZING RAIN    WABASHA                 44.37N 92.05W
01/27/2013  E0.10 INCH       WABASHA            MN   LAW ENFORCEMENT

            FREEZING RAIN DURATION 24 HOURS

0721 PM     SNOW             ADAMS                   43.96N 89.82W
01/27/2013  E1.5 INCH        ADAMS              WI   LAW ENFORCEMENT

            SNOW DURATION 24 HOURS

0755 PM     FREEZING RAIN    DECORAH                 43.31N 91.79W
01/27/2013  E0.30 INCH       WINNESHIEK         IA   LAW ENFORCEMENT

            ESTIMATES 1/4 TO 1/2 INCH OF ICE ACCUMULATION. UNTREATED
            ROADS ARE ICE COVERED.

0903 PM     FREEZING RAIN    EDGEWOOD                42.65N 91.40W
01/27/2013  E0.10 INCH       CLAYTON            IA   PUBLIC

            24 HOUR ACCUMULATION OF FREEZING PRECIPITATION

 


Freezing Rain Accumulation Reports through 729 PM Sunday 

 

LOCATION                       AMOUNT    TIME/DATE

IOWA

...ALLAMAKEE...
3 SE WATERVILLE                0.11 IN   0507 PM 01/27

...FAYETTE...
WEST UNION                     0.30 IN   0456 PM 01/27

MINNESOTA

...FILLMORE...
HARMONY                        0.25 IN   0546 PM 01/27
SPRING VALLEY                  0.10 IN   0452 PM 01/27

...HOUSTON...
LA CRESCENT                    0.10 IN   0503 PM 01/27

...OLMSTED...
ROCHESTER AIRPORT              0.13 IN   0619 PM 01/27

...WABASHA...
WABASHA (SHERIFF)              0.10 IN   0703 PM 01/27

WISCONSIN

...CRAWFORD...
PRAIRIE DU CHIEN               0.20 IN   0600 PM 01/27

...GRANT...
1 ENE BOSCOBEL                 0.16 IN   0503 PM 01/27

...LA CROSSE...
NWS LA CROSSE                  0.10 IN   0619 PM 01/27

...VERNON...
4 NNE STODDARD                 0.10 IN   0658 PM 01/27

Snow and Sleet Accumulation Reports through 729 PM Sunday

 
LOCATION                       AMOUNT    TIME/DATE
WISCONSIN

...ADAMS...
FRIENDSHIP                     1.5 IN    0721 PM 01/27

...BUFFALO...
MONDOVI                        2.0 IN    0550 PM 01/27

...CLARK...
3 NE VEEFKIND                  3.5 IN    0448 PM 01/27

...JACKSON...
BLK RVR FALLS                  2.0 IN    0541 PM 01/27

...LA CROSSE...
NWS LA CROSSE                  0.2 IN    0613 PM 01/27


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