Alert archive / Wisconsin / Snow Advisories in 2005

Snow Advisory 3, NWS La Crosse, WI

December 29, 20059 counties in Wisconsin; 7 counties in Minnesota

NWS La Crosse, WI issued this snow advisory at Dec 29, 2005, 3:37 PM CST for 9 counties in Wisconsin; 7 counties in Minnesota. It took effect at Dec 30, 2005, 12:00 AM CST. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued
Dec 29, 2005, 3:37 PM CST (21:37 UTC)
In effect from
Dec 30, 2005, 12:00 AM CST
Expired
Dec 30, 2005, 9:23 PM CST
In force
21 hr
Issued by
NWS La Crosse, WI

Counties 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, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Monroe County, WI, Taylor County, WI, Trempealeau County, WI

The radar

The La Crosse radar (KARX), 37 km from the middle of the area, began a volume at 21:39 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, 9.6 hours before the alert went out and 193 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 2005-12-29Temperature 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 2005-12-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939587897117Sfc1 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
740 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS43 KARX 292137
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
337 PM CST THU DEC 29 2005

...WINTER STORM HEADING INTO THE AREA LATE TONIGHT...

.A STRONG AREA OF LOW PRESSURE WAS LOCATED OVER SOUTH DAKOTA LATE
THIS AFTERNOON AND MOVING EAST. A WINTRY MIX OF PRECIPITATION WAS
BREAKING OUT ACROSS EASTERN SOUTH DAKOTA WITH HEAVY SNOW FOUND
FURTHER NORTH. THIS STORM CENTER WILL MOVE INTO IOWA
FRIDAY...SPREADING ACCUMULATING SNOWS INTO MUCH OF MINNESOTA AND
WISCONSIN. SNOW IS EXPECTED AFTER MIDNIGHT TONIGHT WEST OF THE
MISSISSIPPI RIVER...WITH WISCONSIN SEEING THE SNOW BY EARLY FRIDAY
MORNING. SNOW IS EXPECTED ALL DAY FRIDAY FROM ROUGHLY THE I-90
CORRIDOR AND NORTH. SNOW TOTALS OF 3 TO 7 INCHES ARE EXPECTED
BEFORE THE SNOW TAPERS OFF...FROM WEST TO EAST...AFTER MIDNIGHT
FRIDAY NIGHT.

THOSE PLANNING TRAVEL FRIDAY SHOULD BE PREPARED FOR WINTRY
PRECIPITATION AND SNOW COVERED SURFACES. LISTEN TO NOAA WEATHER
RADIO OR YOUR LOCAL MEDIA FOR THE LATER UPDATES ON THIS SITUATION.

MNZ086-087-094-095-300415-
/O.NEW.KARX.SN.Y.0003.051230T0600Z-051231T0600Z/
DODGE-OLMSTED-MOWER-FILLMORE-
INCLUDING THE CITIES OF...ROCHESTER...AUSTIN
337 PM CST THU DEC 29 2005

...SNOW ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT CST
FRIDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT
CST FRIDAY NIGHT. 

EXPECT SNOW TO SPREAD IN AFTER MIDNIGHT TONIGHT WITH ABOUT AN INCH EXPECTED
BY MORNING. A HEAVY SNOW PERIOD WILL OCCUR FRIDAY MORNING WHERE ANOTHER
2 TO 3 INCHES COULD ACCUMULATE BY NOON. SNOW WILL THEN TAPER OFF
LATER FRIDAY AND FRIDAY OVERNIGHT. A STORM TOTAL OF 2 TO 4 INCHES
IS EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

MNZ079-088-096-WIZ032>034-041>044-300415-
/O.NEW.KARX.SN.Y.0003.051230T0900Z-051231T0900Z/
WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU-JACKSON-LA CROSSE-
MONROE-JUNEAU-ADAMS-
INCLUDING THE CITIES OF...WINONA...BLACK RIVER FALLS...
LA CROSSE...SPARTA/TOMAH...MAUSTON
337 PM CST THU DEC 29 2005

...SNOW ADVISORY IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY...

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY. 

EXPECT SNOW TO SPREAD IN FROM THE WEST AFTER 3 AM TONIGHT. AN
INCH OR LESS IS EXPECTED BY 6 AM...MAINLY IN AREAS ALONG THE
MISSISSIPPI RIVER. A HEAVY SNOW PERIOD WILL OCCUR FRIDAY MORNING
WHERE ANOTHER 2 TO 4 INCHES COULD ACCUMULATE BY AFTERNOON. SNOW
WILL THEN TAPER OFF LATE FRIDAY NIGHT. A STORM TOTAL OF 3 TO 6
INCHES IS EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

WIZ017-029-300415-
/O.NEW.KARX.SN.Y.0003.051230T0900Z-051231T0900Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
337 PM CST THU DEC 29 2005

...SNOW ADVISORY IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY...

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY. 

EXPECT SNOW TO SPREAD IN FROM THE WEST LATE TONIGHT WITH LESS THAN AN
INCH EXPECTED BY 6 AM. STEADY ACCUMULATING SNOW IS EXPECTED
FRIDAY WITH AN ADDITIONAL 3 TO 4 INCHES EXPECTED BY LATE AFTERNOON.
SNOW WILL THEN TAPER OFF AND END LATE FRIDAY NIGHT. A STORM TOTAL
OF 4 TO 7 INCHES IS EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$
8 follow-up statements
000 
WWUS43 KARX 300053
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
653 PM CST THU DEC 29 2005

...WINTER STORM HEADING INTO THE AREA LATE TONIGHT...

.A STRONG AREA OF LOW PRESSURE WAS LOCATED OVER CENTRAL SOUTH
DAKOTA EARLY THIS EVENING AND WAS MOVING EAST. A WINTRY MIX OF
PRECIPITATION WAS BREAKING OUT ACROSS NORTHWEST IOWA AND EASTERN
SOUTH DAKOTA WITH HEAVY SNOW FOUND FURTHER NORTH. THIS STORM
WILL MOVE INTO IOWA FRIDAY... SPREADING ACCUMULATING SNOWS INTO
MUCH OF MINNESOTA AND WISCONSIN. SNOW IS EXPECTED AFTER MIDNIGHT
TONIGHT WEST OF THE MISSISSIPPI RIVER...WITH WISCONSIN SEEING THE
SNOW BY EARLY FRIDAY MORNING. SNOW IS EXPECTED ALL DAY FRIDAY FROM
ROUGHLY THE I-90 CORRIDOR AND NORTH. SNOW TOTALS OF 3 TO 7 INCHES
ARE EXPECTED BEFORE THE SNOW TAPERS OFF...FROM WEST TO EAST...AFTER
MIDNIGHT FRIDAY NIGHT.

THOSE PLANNING TRAVEL FRIDAY SHOULD BE PREPARED FOR WINTRY
PRECIPITATION AND SNOW COVERED SURFACES. LISTEN TO NOAA WEATHER
RADIO OR YOUR LOCAL MEDIA FOR THE LATER UPDATES ON THIS
SITUATION.

MNZ086-087-094-095-300900-
/O.CON.KARX.SN.Y.0003.051230T0600Z-051231T0600Z/
DODGE-OLMSTED-MOWER-FILLMORE-
INCLUDING THE CITIES OF...ROCHESTER...AUSTIN
653 PM CST THU DEC 29 2005

...SNOW ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
MIDNIGHT CST FRIDAY NIGHT...

A SNOW ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
MIDNIGHT CST FRIDAY NIGHT. 

EXPECT SNOW TO SPREAD IN AFTER MIDNIGHT TONIGHT WITH ABOUT AN
INCH EXPECTED BY MORNING. A PERIOD OF HEAVY SNOW WILL OCCUR
FRIDAY MORNING WHERE ANOTHER 2 TO 3 INCHES COULD ACCUMULATE BY
NOON. THE SNOW WILL THEN TAPER OFF LATER FRIDAY AND FRIDAY NIGHT
WITH A STORM TOTAL OF 2 TO 4 INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

MNZ079-088-096-WIZ032>034-041>044-300900-
/O.CON.KARX.SN.Y.0003.051230T0900Z-051231T0900Z/
WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU-JACKSON-LA CROSSE-
MONROE-JUNEAU-ADAMS-
INCLUDING THE CITIES OF...WINONA...BLACK RIVER FALLS...
LA CROSSE...SPARTA/TOMAH...MAUSTON
653 PM CST THU DEC 29 2005

...SNOW ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY. 

EXPECT SNOW TO SPREAD IN FROM THE WEST AFTER 3 AM TONIGHT. AN
INCH OR LESS IS EXPECTED BY 6 AM...MAINLY IN AREAS ALONG THE
MISSISSIPPI RIVER. A PERIOD OF HEAVY SNOW WILL OCCUR FRIDAY
MORNING WHERE ANOTHER 2 TO 4 INCHES COULD ACCUMULATE BY AFTERNOON.
THE SNOW WILL THEN TAPER OFF LATE FRIDAY NIGHT WITH A STORM TOTAL OF 3
TO 6 INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

WIZ017-029-300900-
/O.CON.KARX.SN.Y.0003.051230T0900Z-051231T0900Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
653 PM CST THU DEC 29 2005

...SNOW ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY. 

EXPECT SNOW TO SPREAD IN FROM THE WEST LATE TONIGHT WITH LESS
THAN AN INCH EXPECTED BY 6 AM. STEADY ACCUMULATING SNOW IS
EXPECTED FRIDAY WITH AN ADDITIONAL 3 TO 4 INCHES EXPECTED BY LATE
AFTERNOON. THE SNOW WILL THEN TAPER OFF AND END LATE FRIDAY NIGHT
WITH A STORM TOTAL OF 4 TO 7 INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

04
000 
WWUS43 KARX 300429
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
1029 PM CST THU DEC 29 2005

...WINTER STORM HEADING INTO THE AREA LATE TONIGHT...

.A STRONG AREA OF LOW PRESSURE WAS LOCATED OVER EASTERN SOUTH DAKOTA
LATE THIS EVENING AND WAS MOVING EAST. A WINTRY MIX OF PRECIPITATION
WAS BREAKING OUT ACROSS NORTHWEST INTO NORTH CENTRAL IOWA WITH
HEAVY SNOW FOUND FURTHER NORTH. THIS STORM WILL MOVE INTO IOWA
FRIDAY...SPREADING ACCUMULATING SNOWS INTO MUCH OF MINNESOTA AND
WISCONSIN. SNOW WILL CONTINUE FALLING TONIGHT WEST OF THE MISSISSIPPI
RIVER...SPREADING INTO CENTRAL WISCONSIN BEFORE DAYBREAK FRIDAY MORNING.
SNOW IS EXPECTED ALL DAY FRIDAY FROM ROUGHLY THE I-90 CORRIDOR AND
NORTH. SNOW TOTALS OF 3 TO 7 INCHES ARE EXPECTED BEFORE THE SNOW
TAPERS OFF...FROM WEST TO EAST...AFTER MIDNIGHT FRIDAY NIGHT.

THOSE PLANNING TRAVEL FRIDAY SHOULD BE PREPARED FOR WINTRY
PRECIPITATION AND SNOW COVERED SURFACES. LISTEN TO NOAA WEATHER
RADIO OR YOUR LOCAL MEDIA FOR THE LATER UPDATES ON THIS
SITUATION.

MNZ086-087-094-095-301230-
/O.CON.KARX.SN.Y.0003.051230T0600Z-051231T0600Z/
DODGE-OLMSTED-MOWER-FILLMORE-
INCLUDING THE CITIES OF...ROCHESTER...AUSTIN
1029 PM CST THU DEC 29 2005

...SNOW ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST FRIDAY
NIGHT...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST FRIDAY
NIGHT. 

LIGHT SNOW WILL CONTINUE TO SPREAD ACROSS THE REGION. THE SNOW
WILL INCREASE IN INTENSITY EARLY FRIDAY MORNING WITH ABOUT AN
INCH EXPECTED BY DAYBREAK. A PERIOD OF HEAVY SNOW WILL OCCUR FRIDAY
MORNING WHERE ANOTHER 2 TO 3 INCHES COULD ACCUMULATE BY NOON. THE
SNOW WILL THEN TAPER OFF LATER FRIDAY AND FRIDAY NIGHT WITH A
STORM TOTAL OF 2 TO 4 INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

MNZ079-088-096-WIZ032>034-041>044-301230-
/O.CON.KARX.SN.Y.0003.051230T0900Z-051231T0900Z/
WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU-JACKSON-LA CROSSE-
MONROE-JUNEAU-ADAMS-
INCLUDING THE CITIES OF...WINONA...BLACK RIVER FALLS...
LA CROSSE...SPARTA/TOMAH...MAUSTON
1029 PM CST THU DEC 29 2005

...SNOW ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY. 

LIGHT SNOW WILL CONTINUE TO SPREAD INTO THE REGION. THE SNOW WILL
INCREASE IN INTENSITY AFTER 3 AM FRIDAY MORNING WITH AN INCH OR LESS
EXPECTED BY DAYBREAK...MAINLY IN AREAS ALONG THE MISSISSIPPI
RIVER. A PERIOD OF HEAVY SNOW WILL OCCUR FRIDAY MORNING WHERE
ANOTHER 2 TO 4 INCHES COULD ACCUMULATE BY AFTERNOON. THE SNOW WILL
THEN TAPER OFF LATE FRIDAY NIGHT WITH A STORM TOTAL OF 3 TO 6
INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

WIZ017-029-301230-
/O.CON.KARX.SN.Y.0003.051230T0900Z-051231T0900Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
1029 PM CST THU DEC 29 2005

...SNOW ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM CST
SATURDAY. 

LIGHT SNOW WILL SPREAD INTO THE REGION EARLY FRIDAY MORNING AND
SHOULD INCREASE IN INTENSITY AFTER 3 AM. ACCUMULATIONS THROUGH
DAYBREAK FRIDAY SHOULD BE LESS THAN AN INCH. STEADY ACCUMULATING
SNOW IS EXPECTED FRIDAY WITH AN ADDITIONAL 3 TO 4 INCHES EXPECTED
BY LATE AFTERNOON. THE SNOW WILL THEN TAPER OFF AND END LATE
FRIDAY NIGHT WITH A STORM TOTAL OF 4 TO 7 INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

04
000 
WWUS43 KARX 301002
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
402 AM CST FRI DEC 30 2005

...WINTER STORM CONTINUES TRACKING TOWARD THE AREA...

.AN AREA OF LOW PRESSURE WAS LOCATED ALONG THE BORDER OF SOUTH
DAKOTA AND MINNESOTA EARLY THIS MORNING...AND WAS HEADING EAST
TOWARD THE AREA. LIGHT SNOW WAS FALLING MAINLY NORTH OF A LINE
FROM AUSTIN MINNESOTA THROUGH LA CROSSE AND MAUSTON WISCONSIN. 
THE STORM SYSTEM WILL TRACK SLOWLY EAST ACROSS SOUTHERN MINNESOTA
TODAY...SPREADING ACCUMULATING SNOWS INTO MUCH OF MINNESOTA AND
WISCONSIN. SNOW IS EXPECTED ALL DAY TODAY FROM ROUGHLY THE I-90
CORRIDOR AND POINTS NORTH. SNOW TOTALS OF 3 TO 6 INCHES ARE
EXPECTED BEFORE THE SNOW TAPERS OFF...FROM WEST TO EAST...AFTER
MIDNIGHT TONIGHT.

THOSE PLANNING TRAVEL TODAY SHOULD BE PREPARED FOR WINTRY
PRECIPITATION AND SNOW COVERED SURFACES. LISTEN TO NOAA WEATHER
RADIO OR YOUR LOCAL MEDIA FOR THE LATER UPDATES ON THIS
SITUATION.

MNZ086-087-094-095-301815-
/O.CON.KARX.SN.Y.0003.000000T0000Z-051231T0600Z/
DODGE-OLMSTED-MOWER-FILLMORE-
INCLUDING THE CITIES OF...ROCHESTER...AUSTIN
402 AM CST FRI DEC 30 2005

...SNOW ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT. 

LIGHT SNOW WILL CONTINUE TO FALL ACROSS THE REGION. THE SNOW WILL
INCREASE IN INTENSITY THIS MORNING WHERE ANOTHER 2 TO 3 INCHES
COULD ACCUMULATE BY NOON. THE SNOW WILL THEN TAPER OFF BY TONIGHT 
WITH A STORM TOTAL OF 2 TO 4 INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

MNZ079-088-096-WIZ032>034-041>044-301815-
/O.CON.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU-JACKSON-LA CROSSE-
MONROE-JUNEAU-ADAMS-
INCLUDING THE CITIES OF...WINONA...BLACK RIVER FALLS...
LA CROSSE...SPARTA/TOMAH...MAUSTON
402 AM CST FRI DEC 30 2005

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY. 

LIGHT SNOW WILL CONTINUE TO SPREAD INTO THE REGION TODAY. THE SNOW IS
EXPECTED TO PICK UP IN INTENSITY AGAIN LATER THIS MORNING WHERE
ANOTHER 2 TO 4 INCHES COULD ACCUMULATE BY AFTERNOON. THE SNOW WILL
THEN TAPER OFF LATE TONIGHT WITH A STORM TOTAL OF 3 TO 6
INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

WIZ017-029-301815-
/O.CON.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
402 AM CST FRI DEC 30 2005

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY. 

STEADY ACCUMULATING SNOW IS EXPECTED TODAY WITH AN ADDITIONAL 3 TO
4 INCHES EXPECTED BY LATE AFTERNOON. THE SNOW WILL THEN TAPER OFF
AND END LATE TONIGHT WITH A STORM TOTAL OF 4 TO 7 INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

DAS
000 
WWUS43 KARX 301643
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
1043 AM CST FRI DEC 30 2005

...WINTER STORM TRACKING SLIGHTLY FURTHER NORTH...

.AN AREA OF LOW PRESSURE WAS LOCATED IN SOUTHWESTERN MINNESOTA
LATE THIS MORNING AND CONTINUED MOVING EAST. HEAVY SNOW WAS LOCATED
ACROSS SOUTHWEST MINNESOTA INTO CENTRAL MINNESOTA WITH LIGHTER
SNOW HEADING EAST TOWARD THE MISSISSIPPI RIVER. THIS STORM TRACK
IS SLIGHTLY FURTHER NORTH THAN EARLIER FORECASTS AND THEREFORE THE
ACCUMULATING SNOW HAS ALSO SHIFTED FURTHER NORTH. TOTAL SNOWFALL
AMOUNTS OF OVER 3 INCHES ARE EXPECTED ALONG AND NORTH OF A RED
WING MINNESOTA...TO WISCONSIN DELLS LINE. ALTHOUGH ABOUT ANOTHER
2 INCHES IS EXPECTED ALONG THE I-90 CORRIDOR...IMPACTS TO TRAVEL
SHOULD BE LESS AND THEREFORE THE ADVISORY AREA HAS BEEN SHIFTED
NORTHWARD.

AS THE STORM CONTINUES TO MOVE EAST TOWARD LA CROSSE WISCONSIN
TODAY...EXPECT SNOW TO INCREASE ACROSS SOUTHEAST MINNESOTA AND
NORTH OF I-90 IN WISCONSIN. A PERIOD OF DRIZZLE OR FREEZING
DRIZZLE WITH ISOLATED SLICK SPOTS WILL ALSO OCCUR LATE THIS
MORNING AND THIS AFTERNOON. THOSE PLANNING TRAVEL TODAY SHOULD BE
PREPARED FOR WINTRY PRECIPITATION AND SNOW COVERED SURFACES IN THE
ADVISORY AREA. LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR
THE LATER UPDATES ON THIS SITUATION.

MNZ086-087-094-095-301745-
/O.CAN.KARX.SN.Y.0003.000000T0000Z-051231T0600Z/
DODGE-OLMSTED-MOWER-FILLMORE-
INCLUDING THE CITIES OF...ROCHESTER...AUSTIN
1043 AM CST FRI DEC 30 2005

...SNOW ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS CANCELLED THE SNOW
ADVISORY BECAUSE LESS SNOW IS EXPECTED FROM THIS WINTER STORM.
DRIZZLE...SNOW...AND ISOLATED FREEZING DRIZZLE IS STILL EXPECTED
THIS AFTERNOON...CHANGING TO ALL LIGHT SNOW THIS AFTERNOON. 1
TO 3 INCHES TOTAL IS EXPECTED FROM THIS STORM. 
$$

MNZ088-096-WIZ041-042-301745-
/O.CAN.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
WINONA-HOUSTON-LA CROSSE-MONROE-
INCLUDING THE CITIES OF...WINONA...LA CROSSE...SPARTA/TOMAH
1043 AM CST FRI DEC 30 2005

...SNOW ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS CANCELLED THE SNOW
ADVISORY...BECAUSE LESS SNOW IS EXPECTED FROM THIS WINTER STORM.
DRIZZLE...SNOW...AND ISOLATED FREEZING DRIZZLE IS STILL EXPECTED
THIS AFTERNOON...CHANGING TO ALL LIGHT SNOW THIS EVENING. 1 TO 3
INCHES TOTAL IS EXPECTED FROM THIS STORM.

$$

MNZ079-WIZ032>034-043-044-302100-
/O.CON.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
WABASHA-BUFFALO-TREMPEALEAU-JACKSON-JUNEAU-ADAMS-
INCLUDING THE CITIES OF...BLACK RIVER FALLS...MAUSTON
1043 AM CST FRI DEC 30 2005

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY. 

LIGHT SNOW WILL INCREASE THIS AFTERNOON AND EARLY EVENING ACROSS
THE AREA. SHORT PERIODS OF DRIZZLE OR FREEZING DRIZZLE MAY ALSO
OCCUR. SNOW WILL TAPER OFF AFTER MIDNIGHT. STORM TOTALS SHOULD BE
IN THE 2 TO 4 INCH RANGE...WITH MORE 4 INCH TOTALS FURTHER NORTH
IN THE COUNTY.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

WIZ017-029-302100-
/O.CON.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
1043 AM CST FRI DEC 30 2005

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY. 

STEADY ACCUMULATING SNOW IS EXPECTED THIS AFTERNOON AND INTO EARLY
THIS EVENING. TODAY ABOUT 2 TO 3 INCHES OF SNOW IS EXPECTED. THE
SNOW WILL THEN TAPER OFF AND END LATE TONIGHT WITH A STORM TOTAL
OF 4 TO 6 INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

BAUMGARDT
000 
WWUS43 KARX 301946
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
146 PM CST FRI DEC 30 2005

...DRIER AIR WRAPPING INTO THE WINTER STORM...

.AN AREA OF LOW PRESSURE WAS LOCATED IN SOUTH-CENTRAL MINNESOTA
EARLY THIS AFTERNOON...SLOWLY SHIFTING EAST. HEAVY SNOW CONTINUED
ALONG I-35 IN MINNESOTA ...NORTHWARD INTO THE MINNEAPOLIS AREA. A
NARROW RIBBON OF DRY AIR WAS WRAPPING INTO THE STORM FROM IOWA...
NORTHEASTWARD INTO WESTERN WISCONSIN. THIS DRY AIR WAS ABOVE THE
SURFACE...AND WAS ACTING TO PREVENT SNOW FROM FORMING.
INSTEAD...WIDESPREAD DRIZZLE...AND VERY ISOLATED FREEZING
DRIZZLE...WERE FOUND ACROSS THE AREA FROM SOUTHWEST OF I-94 IN
WESTERN WISCONSIN...INTO IOWA. SNOWFALL WAS ALSO FOUND ALONG AND
EAST OF THE WISCONSIN RIVER.

AS THE LOW SHIFTS EAST INTO WISCONSIN...COLDER AIR WILL MOVE IN
AND PRECIPITATION WILL CHANGE OVER TO LIGHT SNOW. HOWEVER...THE
DRY AIR HAS DRASTICALLY REDUCED THE AMOUNT OF SNOW EXPECTED FROM
THE STORM. BY LATE THIS AFTERNOON...THE ADVISORIES MAY BE DROPPED
SHOULD CONDITIONS SUGGEST ANY ADDITIONAL SNOWFALL WILL BE MINIMAL.

SNOW IS STILL FORECAST IN THE ADVISORY AREA...OR OCCURRING..SO THOSE
PLANNING TRAVEL THROUGH THE EVENING SHOULD BE PREPARED FOR WINTRY
PRECIPITATION AND SNOW COVERED SURFACES IN THE ADVISORY AREA.
LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR UPDATES ON
THIS SITUATION.

MNZ079-WIZ032>034-043-044-302200-
/O.CON.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
WABASHA-BUFFALO-TREMPEALEAU-JACKSON-JUNEAU-ADAMS-
INCLUDING THE CITIES OF...BLACK RIVER FALLS...MAUSTON
146 PM CST FRI DEC 30 2005

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY. 

LIGHT SNOW WILL CONTINUE THIS AFTERNOON...MAINLY NORTHEAST OF
I-94. SOUTHWEST OF I-94 EXPECT DRIZZLE OR FREEZING DRIZZLE AND
OCCASIONAL FLURRIES. ALL SNOW IS EXPECTED IN THE ADVISORY AREA BY
LATE THIS AFTERNOON AND EARLY EVENING. STORM TOTALS SHOULD BE IN
THE 2 TO 4 INCH RANGE BY SATURDAY MORNING.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

WIZ017-029-302200-
/O.CON.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
146 PM CST FRI DEC 30 2005

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY. 

PERIODS OF LIGHT SNOW ARE EXPECTED THIS AFTERNOON WITH FREEZING
DRIZZLE ALSO OCCURRING. ABOUT 1 TO 2 INCHES OF SNOW SHOULD FALL
TODAY...WITH AN INCH FALLING OVERNIGHT. THE SNOW WILL THEN TAPER
OFF AND END LATE TONIGHT WITH A STORM TOTAL OF 2 TO 5 INCHES
EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

BAUMGARDT
000 
WWUS43 KARX 302131
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
331 PM CST FRI DEC 30 2005

...WINTER STORM STILL BRINGING SNOW TO NORTH-CENTRAL WISCONSIN...

.AN AREA OF LOW PRESSURE CONTINUED TO SLOWLY MOVE EAST ACROSS
SOUTHERN MINNESOTA. SNOWFALL CONTINUED FROM MINNEAPOLIS...
EASTWARD TO NEAR EAU CLAIRE ALONG HIGHWAY 29...AND INTO CENTRAL
WISCONSIN. PATCHY FREEZING DRIZZLE WAS ALSO OCCURRING. WITH THE
SNOW FALLING FURTHER NORTH...PORTIONS OF THE ADVISORY HAVE
BEEN CANCELED ALONG AND SOUTH OF A RED WING MINNESOTA TO WISCONSIN
RAPIDS LINE.

FURTHER NORTH...LIGHT SNOW WILL CONTINUE THIS EVENING BEFORE
TAPERING OFF AFTER MIDNIGHT...AS THE LOW DEPARTS TOWARD MICHIGAN.
ABOUT 2 TO 3 INCHES OF SNOW HAS FALLEN IN CLARK AND TAYLOR
COUNTIES THUS FAR...AND ANOTHER INCH IS EXPECTED OVERNIGHT. STORM
TOTALS BY SATURDAY MORNING SHOULD BE IN THE 2 TO 5 INCH RANGE.

THOSE PLANNING TRAVEL OVERNIGHT SHOULD BE PREPARED FOR WINTRY
PRECIPITATION AND SNOW COVERED SURFACES IN THE ADVISORY AREA.
LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR UPDATES ON
THIS SITUATION.

MNZ079-WIZ032>034-043-044-302245-
/O.CAN.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
WABASHA-BUFFALO-TREMPEALEAU-JACKSON-JUNEAU-ADAMS-
INCLUDING THE CITIES OF...BLACK RIVER FALLS...MAUSTON
331 PM CST FRI DEC 30 2005

...SNOW ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS CANCELLED THE SNOW
ADVISORY. NO ACCUMULATION IS EXPECTED FROM ANY LIGHT SNOW TONIGHT. 

$$

WIZ017-029-310415-
/O.CON.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
331 PM CST FRI DEC 30 2005

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY. 

PERIODS OF LIGHT SNOW ARE EXPECTED THIS EVENING. ABOUT AN INCH 
OF SNOW SHOULD FALL OVERNIGHT. THE SNOW WILL THEN TAPER OFF AFTER
MIDNIGHT. A STORM TOTAL OF 2 TO 5 INCHES EXPECTED.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

BAUMGARDT
000 
WWUS43 KARX 310048
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
648 PM CST FRI DEC 30 2005

...WINTER STORM STILL BRINGING SNOW TO NORTH-CENTRAL WISCONSIN...

.AN AREA OF LOW PRESSURE CONTINUED TO SLOWLY MOVE EAST ACROSS
SOUTHERN MINNESOTA. SNOW CONTINUED TO FALL FROM EAST CENTRAL MINNESOTA
INTO CENTRAL WISCONSIN. PATCHY FREEZING DRIZZLE WAS ALSO OCCURRING
OVER PARTS OF CENTRAL WISCONSIN. THE LIGHT SNOW WILL CONTINUE TO
FALL THIS EVENING BEFORE TAPERING OFF AFTER MIDNIGHT...AS THE LOW
DEPARTS TOWARD MICHIGAN. ADDITIONAL ACCUMULATIONS AROUND AN INCH
ARE POSSIBLE TONIGHT. STORM TOTALS BY SATURDAY MORNING SHOULD BE
IN THE 2 TO 5 INCH RANGE.

THOSE PLANNING TRAVEL OVERNIGHT SHOULD BE PREPARED FOR WINTRY
PRECIPITATION AND SNOW COVERED SURFACES IN THE ADVISORY AREA.
LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR UPDATES ON
THIS SITUATION.

WIZ017-029-310900-
/O.CON.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
648 PM CST FRI DEC 30 2005

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST SATURDAY. 

PERIODS OF LIGHT SNOW ARE EXPECTED THIS EVENING...BEFORE TAPERING
OFF TO FLURRIES AFTER MIDNIGHT. ACCUMULATIONS AROUND AN INCH ARE
POSSIBLE TONIGHT. STORM TOTAL ACCUMULATIONS OF 2 TO 5 INCHES ARE
EXPECTED. SOME PATCHY FREEZING DRIZZLE WILL ALSO BE POSSIBLE...ESPECIALLY
SOUTH OF HIGHWAY 98 OVER THE SOUTHERN SECTIONS OF CLARK COUNTY.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

04
000 
WWUS43 KARX 310323
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
923 PM CST FRI DEC 30 2005

...ONLY LIGHT SNOW EXPECTED FOR THE REST OF THE NIGHT...

.AN AREA OF LOW PRESSURE OVER NORTHEAST IOWA THIS EVENING WILL
CONTINUE TO MOVE SLOWLY EAST. THE SNOW FROM THIS AREA OF LOW PRESSURE
HAS EITHER ENDED OR TAPERED OFF TO JUST LIGHT SNOW. THE LIGHT
SNOW WILL CONTINUE ON AND OFF INTO EARLY SATURDAY...BUT ANY
ADDITIONAL ACCUMULATION WILL BE A HALF INCH OR LESS. SOME LIGHT
FREEZING DRIZZLE MAY ALSO OCCUR...WHICH COULD CREATE SOME PATCHY
ICY SPOTS...BUT SIGNIFICANT ICE ACCUMULATION IS NOT EXPECTED.

WIZ017-029-310430-
/O.CAN.KARX.SN.Y.0003.000000T0000Z-051231T0900Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
923 PM CST FRI DEC 30 2005

...SNOW ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS CANCELLED THE SNOW
ADVISORY. 

SOME LIGHT SNOW OR FREEZING DRIZZLE WILL CONTINUE TO FALL INTO
EARLY SATURDAY MORNING. ANY ADDITIONAL SNOW ACCUMULATIONS WILL BE
A HALF INCH OR LESS AND ONLY PATCHY ICY SPOTS ARE EXPECTED FROM THE
FREEZING DRIZZLE.

$$

04

What forecasters said that day

The local office's own words before this snow advisory 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 snow advisory went out at Dec 29, 2:58 PM CST, 39 minutes earlier.

Area forecast discussion, Dec 29, 2:58 PM CST, 39 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
258 PM CST THU DEC 29 2005

.SHORT TERM...TONIGHT THROUGH SUNDAY NIGHT

FORECAST CONCERNS THIS PACKAGE...SNOW AMOUNTS LATE TONIGHT THRU FRI
NIGHT..PRECIP CHANCES/TYPES WITH NEXT SYSTEM LATE SUN/SUN NIGHT...
TEMPERATURES THRU THE PERIOD.

18Z DATA ANALYSIS SHOWED THE LOW NORTH OF KVTN. WV IMAGERY SHOWED
THE SHORTWAVE ENERGY SPINNING ACROSS WY/CO...MOVING EAST INTO
WESTERN NEB. NATIONAL RADAR MOSAIC SHOWED PRECIP INCREASING ACROSS
CENTRAL NEB/EASTERN SD AHEAD OF THE LOW/SHORTWAVE. FOR THE TIME
BEING...PRECIP WAS SNOW ACROSS ND AND GENERALLY LIQUID OR -FZRA
ACROSS SD/NEB. VIS IMAGERY AND SFC OBS SHOWED THE STRATUS DECK
REMAINED OVER MN/IA/WI...WITH WIDESPREAD FOG ACROSS WESTERN
IA/MN. THE WIDESPREAD LOW CLOUD DECK ONCE AGAIN MADE FOR LIMITED
DIURNAL TEMPERATURE MOVEMENT...WITH MOST NOON-TIME TEMPS ACROSS
MN/IA/WI ONLY A DEGREE OR TWO OFF THEIR MORNING LOWS.

29/12Z NAM/GFS LOOK TO HAVE INITIALIZED OKAY...AND PRESENT RATHER
SIMILAR SOLUTIONS FOR TONIGHT INTO SUN NIGHT. GFS WITH ITS USUAL
BETTER FIT OF 850-500MB HGTS THE RA-OB DATA ACROSS THE CENTRAL/
WESTERN CONUS. NAM WAS ABOUT 2C TOO WARM WITH 850MB TEMPS FROM KTOP-
KABR-KBIS. 300MB JET ANALYSIS LOOKED GOOD WITH GOOD DATA COVERAGE.
DPROG/DT OF 500MB HGTS AT 29/12Z SHOWED THE MODEL RUNS OF 27/12Z AND
28/12Z VERIFIED QUITE WELL WITH THE EASTERN CONUS TROUGH...WITH EDGE
TO GFS. 27/12Z RUNS WERE TOO WEAK WITH THE TROUGH OVER THE CENTRAL
ROCKIES...WHILE THE 28/12Z RUNS WERE QUITE GOOD WITH THIS FEATURE.
THRU 36HRS /00Z SAT/ MODELS HAVE TRENDED TOWARD A COMPROMISE OF
THEIR 28/12Z RUNS. FOR 36-60HRS...NAM/GFS CONTINUE TO TREND FASTER
EXITING THE UPPER LOW EAST OF THE AREA. IN THE 60-84HR TIME-FRAME...
MODELS MAINTAIN DECENT CONSISTENCY WITH THE EARLIER GFS RUNS...BUT
HAVE TRENDED A BIT SLOWER WITH THE NEXT TROUGH INTO THE CENTRAL
CONUS...OPPOSITE THE 29/00Z ECMWF RUN BUT CLOSE TO THE 28/00Z ECMWF
RUN. AT 18Z...A COMPROMISE OF NAM/GFS LOOKED BEST WITH THE SFC MASS
FIELDS AND 12Z-18Z PRECIP ACROSS THE CENTRAL CONUS. WV IMAGERY
SHOWED BOTH NAM/GFS WITH DECENT DEPICTIONS OF THE SHORTWAVE ENERGY
OVER CO/WY. NAM LOOKED BETTER WITH THE SHORTWAVE ENERGY FROM
SOUTHERN CO TO THE CA BAJA. WITH MODELS PRESENTING RATHER SIMILAR
SOLUTIONS THRU THE PERIOD THIS CYCLE...SHORT-TERM FORECAST
CONFIDENCE IS GOOD. OVERALL FAVORED A NAM/GFS COMPROMISE THIS
CYCLE...WHICH LOOKS TO HAVE VERIFIED BEST THE PAST 12 TO 24HRS.

FOR THE SHORT TERM...DEEP LAYERED DYNAMICS/FORCING/LIFT AHEAD OF AND
WITH THE CO/WY SHORTWAVE AND CENTRAL PLAINS LOW SPREAD EAST INTO THE
AREA TONIGHT THEN ACROSS THE FORECAST AREA FRI. BOTH MODELS TRACK
THE SFC LOW AND SHORTWAVE ALMOST DUE EAST TONIGHT/FRI...TO
NORTHEAST IA BY 00Z SAT...THE AXIS OF STRONGEST/DEEPEST LIFT/
DEFORMATION BAND TRANSLATES ACROSS THE NORTHERN 2/3 OF THE FORECAST
AREA LATE TONIGHT INTO FRI AFTERNOON. INITIAL DRY AIR ABOVE THE
STRATUS DECK TO ABOUT 700MB ALLOWS PRECIP FALLING INTO IT TO
EVAPORATIVELY COOL THE WARM LAYER NEAR 850MB TO BELOW 0C. BROAD
ASCENT/LIFT OF THE COLUMN HELP COOL THIS LAYER TOO. MODEL SOUNDINGS
CONTINUE TO INDICATE POTENTIAL FOR SOME SLEET TO MIX WITH THE SNOW
AT TIMES ACROSS NORTHEAST IA/SOUTHWEST WI LATE TONIGHT/FRI...WET-
BULB ZERO IN AN ELEVATED LAYER HOVERING AROUND 0C. BOUNDARY LAYER
TEMPS ACROSS THE FAR SOUTH ON FRI ALSO INDICATING -RA/-SN MIX.
ADDED THIS MENTION FORECAST GRIDS ACROSS THE SOUTH. MODELS PRODUCE
1/3 TO 2/3 INCH QPF ACROSS THE NORTHERN HALF OF THE FORECAST AREA...
WITH BUFKIT COBB DATA INDICATING SNOW-WATER RATIOS OF 10 OR 11 TO
ONE. GIVEN THIS...DECENT MODEL CONSISTENCY SINCE 29/00Z AND MODELS
DOING QUITE WELL AT 18Z...ISSUED SNOW ADVISORY FOR ROUGHLY THE
NORTHERN HALF OF THE FORECAST AREA STARTING LATE TONIGHT WEST OF THE
MS RIVER AND CONTINUING INTO FRI NIGHT ALONG/EAST OF THE MS RIVER.
APPEARS LOCATIONS ALONG NORTH OF INTERSTATE 90 TO SEE 3+ INCHES
SNOW. LATER SHIFTS WILL HAVE TO MONITOR LOCATIONS NORTHEAST OF I-94
FOR POTENTIAL UPGRADE TO WARNING...AS 29/18Z NAM LINGERS THE DEEPER
DEFORMATION BAND FORCING/LIFT ACROSS THE NORTHEAST END OF THE
FORECAST AREA WELL INTO FRI NIGHT. WITH THE SFC-700MB TROUGH AXIS
LINGERING OVER THE AREA SAT...ADDED FLURRIES TO FORECAST GRIDS.
SHORT-LIVED SHORTWAVE RIDGING ALOFT ALONG WITH A WEAK RIDGE OF SFC
HIGH PRESSURE MOVE ACROSS THE AREA SAT NIGHT. DUE TO THE TRANSIENT
NATURE OF THESE FEATURES ALONG WITH THE PERSISTENT LOW LEVEL
INVERSION...APPEARS WHAT SUBSIDENCE IS ASSOCIATED WITH THE RIDGE
AXIS WILL NOT BE ENOUGH TO BREAK UP/CLEAR OUT THE CLOUDS. MID/HIGH
LEVEL MOISTURE AHEAD OF THE NEXT TROUGH INTO THE CENTRAL PLAINS
ALREADY ARRIVES SUN. STRONG LOW LEVEL WARM ADVECTION AHEAD OF THIS
SYSTEM SPREADS ACROSS THE AREA SUN AFTERNOON/NIGHT...WITH LOW LEVEL
THERMAL PROFILES INDICATING A MIX OF PRECIP TYPES WITH THIS SYSTEM.
CHANCE -RA/-SN IN FORECAST GRIDS FOR SUN/SUN NIGHT CONTINUES TO LOOK
GOOD FOR NOW. WITH ALL THE CLOUDS...FAVORED WARMER OF GUIDANCE LOWS
TONIGHT/FRI NIGHT/SAT NIGHT...AND TRENDED THESE UP 1 OR 2 DEGREES AT
MANY LOCATIONS. FAVORED A BLEND OF GUIDANCE HIGHS FRI...THEN WARMER
MAV/MET-MOS VALUES FOR SAT. WITH PLENTY OF CLOUDS ON SUNDAY...
TRENDED HIGHS TOWARD GFS ENSEMBLE-MOS VALUES. WITH THE LOW LEVEL
WARM ADVECTION AND CLOUDS SUN NIGHT...FAVORED WARMER GFS MEX-MOS
LOWS.

.LONG TERM...MONDAY THROUGH THURSDAY

29/00Z GFS/ECMWF SOLUTIONS /AT 500MB/ REMAIN REASONABLY SIMILAR
TO EACH OTHER AND THEIR PREVIOUS RUNS THRU 168HRS...WITH THE GENERAL
TIMING OF THE STRONGER TROUGHS ACROSS THE CONUS. MODELS DO DIFFER
QUITE A BIT WITH THE SHORTWAVE DETAILS. GFS SHOWS THE BETTER RUN-TO-
RUN CONSISTENCY THIS CYCLE...WITH ECMWF ALREADY SHOWING RUN-TO-RUN
DIFFERENCES AT 72HRS /00Z SUN/. GFS ENSEMBLES START TO BECOME
VARIABLE WITH THE SHORTWAVE TIMING DETAILS AT 72HRS...WHICH
INCREASES THRU 168HRS /00Z THU/. ENSEMBLES DO MAINTAIN DECENT
CONSISTENCY OF THE LONG-WAVE RIDGE/TROUGH PATTERN ACROSS NOAM/
EASTERN PAC TO 00Z THU. THE ENSEMBLE LONGWAVE PATTERN THEN BECOMES
QUITE VARIABLE BY 00Z FRI. THE ENSEMBLE MEAN TRENDS TOWARD A
COMPROMISE OF THE 29/00Z GFS/ECMWF OPERATIONAL RUNS IN THE 00Z MON
TO 00Z THU TIME-FRAME. 29/12Z GFS HAS TRENDED A BIT TOWARD A
GFS/ENSEMBLE COMPROMISE BUT MAINTAINS MUCH SIMILARITY TO THE 29/00Z
GFS RUN. FORECAST CONFIDENCE REMAINS ABOVE AVERAGE WITH THE TIMING
OF SYSTEMS ACROSS THE REGION NEXT WEEK...AS MODELS CONSISTENT WITH A
STRONGER TROUGH PASSING ACROSS THE REGION MON...THEN ANOTHER ON WED.
FORECAST CONFIDENCE LOW IN THE DETAILS WITH ALL THE MODEL/ENSEMBLE
VARIABILITY AT THE SHORTWAVE SCALE. LOW LEVEL THERMAL FIELDS SFC-
850MB TEMPS REMAIN IN CRITICAL RANGES FOR MIXED PRECIP TYPES WITH
THE SYSTEMS NEXT WEEK...BUT DID LEAVE WED SYSTEM WITH CHANCE SNOW
FOR NOW WITH THE LOW DETAIL CONFIDENCE...AND FOR CONSISTENCY.
PREVIOUS FORECAST GRID DATA BASE FOR DAYS 4-7 IN DECENT SHAPE AS
MODELS MAINTAIN THE TROUGH TIMING...WITH GENERALLY MINOR ADJUSTMENTS
MADE. TRENDED MON-THU LOWS TOWARD WARMER GFS MEX-MOS LOWS WITH
MOSTLY CLOUDY TO CLOUDY SKIES EXPECTED TO PERSIST. FAVORED COOLER
GFS ENSEMBLE-MOS LOWS MON-TUE...THEN WARMER MEX-MOS HIGHS WED/THU
WITH THE WARMER OVERNIGHT LOWS.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...SNOW ADVISORY FROM 3 AM FRIDAY TO 3 AM CST SATURDAY FOR WIZ032-
     WIZ033-WIZ034-WIZ041-WIZ042-WIZ043-WIZ044.
     SNOW ADVISORY FROM 3 AM FRIDAY TO 3 AM CST SATURDAY FOR
     WIZ017-WIZ029.
MN...SNOW ADVISORY FROM 3 AM FRIDAY TO 3 AM CST SATURDAY FOR MNZ079-
     MNZ088-MNZ096.
     SNOW ADVISORY FROM MIDNIGHT TONIGHT TO MIDNIGHT CST FRIDAY
     NIGHT FOR MNZ086-MNZ087-MNZ094-MNZ095.
IA...NONE.

&&

RRS
Hazardous weather outlook, Dec 29, 3:02 PM CST, 35 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LA CROSSE WI
302 PM CST THU DEC 29 2005

MNZ079-086>088-094>096-WIZ017-029-032>034-041>044-301200-
ADAMS-BUFFALO-CLARK-DODGE-FILLMORE-HOUSTON-JACKSON-JUNEAU-LA CROSSE-
MONROE-MOWER-OLMSTED-TAYLOR-TREMPEALEAU-WABASHA-WINONA-
302 PM CST THU DEC 29 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF SOUTHEAST
MINNESOTA...AND WEST CENTRAL INTO CENTRAL WISCONSIN.

.DAY ONE...TONIGHT

A WINTER STORM WILL MOVE INTO IOWA OVERNIGHT SPREADING SNOWFALL
INTO SOUTHEAST MINNESOTA AFTER MIDNIGHT. BY MORNING...1 TO 2 INCHES
OF SNOW IS LIKELY THERE. ACCUMULATIONS WILL BE MUCH LIGHTER TO THE
SOUTH AND EAST OF THESE AREAS. A SNOW ADVISORY IN EFFECT FOR LATE
TONIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THE SNOW ADVISORY CONTINUES FRIDAY FOR THE AREA AS WIDESPREAD SNOW IS
EXPECTED...ESPECIALLY ALONG AND NORTH OF INTERSTATE 90...WHERE AN
ADDITIONAL 2 TO 4 INCHES WILL FALL. TRAVEL WILL BE IMPACTED IN
THIS AREA. THE SNOW WILL DIMINISH FROM WEST TO EAST FRIDAY NIGHT.

SNOW TOTALS OF 3 TO 5 INCHES ARE EXPECTED AROUND AND NORTH OF THE I-
90 CORRIDOR BY SUNRISE SATURDAY MORNING. HOWEVER...A BAND OF AT
LEAST 4 TO 6 INCHES IS EXPECTED NORTH OF A LAKE CITY MINNESOTA...TO
BLACK RIVER FALLS WISCONSIN...TO WISCONSIN DELLS LINE. WITH THE
SNOW EXITING THE REGION LATE FRIDAY NIGHT...SATURDAY TRAVEL
CONDITIONS SHOULD IMPROVE RAPIDLY AREA-WIDE.

ANOTHER STORM SYSTEM WILL MOVE THROUGH THE CENTRAL PLAINS SUNDAY AND
MONDAY. THIS STORM WILL SPREAD SOME RAIN OR SNOW ACROSS THE AREA
FROM LATER SUNDAY AFTERNOON THROUGH MONDAY. TEMPERATURES APPEAR
TO BE WARMER OUT IN ADVANCE OF THIS SYSTEM...SO RAIN MAY BE MORE
WIDESPREAD. ISOLATED FREEZING RAIN CANNOT BE RULED OUT FOR SUNDAY
NIGHT.

YET ANOTHER SYSTEM IS ON THE HORIZON FOR WEDNESDAY...WITH ANOTHER
SHOT OF RAIN OR SNOW FOR THE REGION...AS THE ACTIVE WEATHER PATTERN
CONTINUES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED. SNOWFALL REPORTS ARE ALWAYS
APPRECIATED AND ASSIST GREATLY WITH PUBLIC SAFETY DECISIONS.

.EMERGENCY MANAGEMENT COORDINATION...

NO CALL IS SCHEDULED.

IAZ008>011-018-019-029-030-WIZ053>055-061-301200-
ALLAMAKEE-CHICKASAW-CLAYTON-CRAWFORD-FAYETTE-FLOYD-GRANT-HOWARD-
MITCHELL-RICHLAND-VERNON-WINNESHIEK-
302 PM CST THU DEC 29 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF NORTHEAST
IOWA AND SOUTHWEST WISCONSIN.

.DAY ONE...TONIGHT

A WINTER STORM WILL MOVE INTO IOWA OVERNIGHT SPREADING SNOW...RAIN...
AND EVEN A CHANCE OF SLEET INTO NORTHEAST IOWA AFTER MIDNIGHT.
TEMPERATURES SHOULD BE NEAR OR ABOVE FREEZING AND ACCUMULATIONS
SHOULD GENERALLY BE LIGHT. HOWEVER...BY MORNING A FEW SLICK SPOTS
COULD BE FOUND OVER NORTHEAST IOWA...ESPECIALLY LOCATIONS WEST OF
HIGHWAY 63 WHERE UP TO AN INCH OF SNOW COULD FALL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A LIGHT RAIN AND SNOW MIX WILL OCCUR FRIDAY AS THE STORM MOVES EAST
INTO ILLINOIS. HOWEVER...CLOSE TO MINNESOTA...AND NEAR AND
NORTH OF HIGHWAY 14 IN WISCONSIN...ALL SNOW SHOULD BE FOUND WITH 1 TO
2 INCHES EXPECTED FRIDAY. LIGHTER AMOUNTS ARE EXPECTED SOUTH OF THIS
ALL SNOW AREA...WHERE LIGHT RAIN AND SNOW...WITH ISOLATED SLEET...ARE
EXPECTED. THOSE WITH OUTDOOR PLANS OR TRAVEL PLANNED
SHOULD PREPARE FOR THE WINTERY WEATHER.

PRECIPITATION SHOULD CHANGE TO ALL SNOW FRIDAY NIGHT AS COLDER AIR
MOVES IN. WITH THE SNOW EXITING THE REGION LATE FRIDAY NIGHT...
SATURDAY TRAVEL CONDITIONS SHOULD IMPROVE RAPIDLY AREA-WIDE.
SNOW TOTALS OF AROUND AN INCH ARE EXPECTED ALONG AND SOUTH OF
HIGHWAY 18...WITH SNOW TOTALS INCREASING TO THE NORTH. A TOTAL OF 1
TO 3 INCHES OF NEW SNOW IS EXPECTED FROM WISCONSIN DELLS...TO NEW
ALBIN IOWA...WESTWARD ALONG THE IOWA-MINNESOTA BORDER BY SATURDAY
MORNING.

ANOTHER STORM SYSTEM WILL MOVE THROUGH THE CENTRAL PLAINS SUNDAY AND
MONDAY. THIS STORM WILL SPREAD SOME RAIN OR SNOW ACROSS THE AREA
FROM LATER SUNDAY AFTERNOON THROUGH MONDAY. TEMPERATURES APPEAR
TO BE WARMER OUT IN ADVANCE OF THIS SYSTEM...SO RAIN MAY BE MORE
WIDESPREAD. ISOLATED FREEZING RAIN CANNOT BE RULED OUT FOR SUNDAY
NIGHT.

YET ANOTHER SYSTEM IS ON THE HORIZON FOR WEDNESDAY...WITH ANOTHER
SHOT OF RAIN OR SNOW FOR THE REGION...AS THE ACTIVE WEATHER PATTERN
CONTINUES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED. SNOWFALL REPORTS ARE ALWAYS
APPRECIATED AND ASSIST GREATLY WITH PUBLIC SAFETY DECISIONS.

.EMERGENCY MANAGEMENT COORDINATION...

NO CALL IS SCHEDULED.

BINAU/BAUMGARDT

Nearby

Snow Advisories in Wisconsin, 2005Snow Advisories in Minnesota, 2005Every snow advisory 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.