Alert archive / Wisconsin / Heavy Snow Warnings in 2005

Heavy Snow Warning 1, NWS La Crosse, WI

December 13, 200513 counties in Wisconsin; 7 counties in Minnesota; 8 counties in Iowa

NWS La Crosse, WI issued this heavy snow warning at Dec 13, 2005, 3:09 PM CST for 13 counties in Wisconsin; 7 counties in Minnesota; 8 counties in Iowa. It took effect at Dec 14, 2005, 12:00 AM CST. It was in force for 22 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 13, 2005, 3:09 PM CST (21:09 UTC)
In effect from
Dec 14, 2005, 12:00 AM CST
Expired
Dec 14, 2005, 9:48 PM CST
In force
22 hr
Issued by
NWS La Crosse, WI
All 28 counties

Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Clark County, WI, Crawford County, WI, Grant County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Monroe County, WI, Richland County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 27 km from the middle of the area, began a volume at 21:11 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.2 hours before the alert went out and 210 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2005-12-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2005-12-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
587 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heavy snow warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS La Crosse, WI wrote its last area forecast discussion before this heavy snow warning went out at Dec 13, 1:41 PM CST, 1 hour 28 minutes earlier.

Area forecast discussion, Dec 13, 1:41 PM CST, 1 hour 28 minutes before
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Hazardous weather outlook, Dec 13, 3:09 PM CST, 0 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LA CROSSE WI
309 PM CST TUE DEC 13 2005

IAZ008>010-018-019-029-MNZ086-087-094-095-141200-
CHICKASAW-DODGE-FAYETTE-FILLMORE-FLOYD-HOWARD-MITCHELL-MOWER-OLMSTED-
WINNESHIEK-
309 PM CST TUE DEC 13 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF SOUTHEAST MINNESOTA
AND NORTHEAST IOWA.

.DAY ONE...TONIGHT

SOME LIGHT FREEZING DRIZZLE WILL BE POSSIBLE THIS EVENING AS
WARM AIR ALOFT IN THE ATMOSPHERE PUSHES TOWARD THE REGION AHEAD OF AN
AREA OF LOW PRESSURE ACROSS SOUTHERN CANADA AND THE HIGH PLAINS.

THE AREA OF LOW PRESSURE WILL APPROACH THE REGION FROM THE NORTHERN
AND CENTRAL PLAINS TONIGHT. SNOW IS EXPECTED TO DEVELOP RAPIDLY AND
MOVE INTO THE AREA AFTER MIDNIGHT WITH ACCUMULATIONS UP TO 2 INCHES
POSSIBLE BY DAYBREAK. A HEAVY SNOW WARNING IS IN EFFECT ACROSS THE
AREA AFTER MIDNIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THE SNOW WILL CONTINUE THROUGH WEDNESDAY WITH AN ADDITIONAL 4 INCHES
OF ACCUMULATION POSSIBLE BY EVENING. THE HEAVY SNOW WARNING IS IN
EFFECT THROUGH WEDNESDAY FOR SNOW ACCUMULATIONS OF AROUND 6 INCHES.
THE AREA OF LOW PRESSURE WILL THEN MOVE VERY SLOWLY EAST ACROSS
WISCONSIN INTO MICHIGAN KEEPING A CHANCE OF LIGHT SNOW AND SOME
ADDITIONAL ACCUMULATIONS IN THE FORECAST THROUGH FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION TONIGHT WILL NOT BE NEEDED. HOWEVER...SNOW
REPORTS WIOULD BE GREATLY APPRECIATED.

.EMERGENCY MANAGEMENT COORDINATION...

NO CALL IS SCHEDULED.

IAZ011-030-MNZ079-088-096-WIZ017-029-032>034-041>044-053>055-061-
141200-
ADAMS-ALLAMAKEE-BUFFALO-CLARK-CLAYTON-CRAWFORD-GRANT-HOUSTON-JACKSON-
JUNEAU-LA CROSSE-MONROE-RICHLAND-TAYLOR-TREMPEALEAU-VERNON-WABASHA-
WINONA-
309 PM CST TUE DEC 13 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF SOUTHEAST MINNESOTA...
NORTHEAST IOWA AND WESTERN INTO CENTRAL WISCONSIN.

.DAY ONE...TONIGHT

SOME LIGHT FREEZING DRIZZLE WILL BE POSSIBLE THIS EVENING AS
WARM AIR ALOFT IN THE ATMOSPHERE PUSHES TOWARD THE REGION AHEAD OF AN
AREA OF LOW PRESSURE ACROSS SOUTHERN CANADA AND THE HIGH PLAINS.

THE AREA OF LOW PRESSURE WILL APPROACH THE REGION FROM THE NORTHERN
AND CENTRAL PLAINS TONIGHT. SNOW IS EXPECTED TO DEVELOP ACROSS THE
AREA LATE TONIGHT WITH ACCUMULATIONS UP TO AN INCH POSSIBLE BY
DAYBREAK.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THE SNOW WILL CONTINUE THROUGH WEDNESDAY WITH AN ADDITIONAL 3 TO 6
INCHES OF ACCUMULATION POSSIBLE BY LATE WEDNESDAY EVENING. A HEAVY
SNOW WARNING IS IN EFFECT WEDNESDAY THROUGH WEDNESDAY EVENING FOR
SNOW ACCUMULATIONS OF 4 TO 8 INCHES. THE AREA OF LOW PRESSURE WILL
THEN MOVE VERY SLOWLY EAST ACROSS WISCONSIN INTO MICHIGAN KEEPING A
CHANCE OF LIGHT SNOW AND SOME ADDITIONAL ACCUMULATIONS IN THE
FORECAST THROUGH FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION TONIGHT WILL NOT BE NEEDED. HOWEVER...SNOW REPORTS
WOULD BE GREATLY APPRECIATED.

.EMERGENCY MANAGEMENT COORDINATION...

NO CALL IS SCHEDULED.

04/DAS

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 13, 3:43 AM CSTWinter Storm WatchARXAdams, Buffalo, Clark, Crawford, Grant, Jackson and 7 more11 hr

Nearby

Heavy Snow Warnings in Wisconsin, 2005Heavy Snow Warnings in Iowa, 2005Heavy Snow Warnings in Minnesota, 2005Every heavy snow warning in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.