Alert archive / Wisconsin / Winter Storm Warnings in 2023

Winter Storm Warning 2, NWS La Crosse, WI

February 8, 2023Grant County, Wisconsin; Clayton County, Iowa

NWS La Crosse, WI issued this winter storm warning at Feb 8, 2023, 2:28 PM CST for Grant County, Wisconsin; Clayton County, Iowa. It took effect at Feb 9, 2023, 3:00 AM CST. It was in force for 13 hr. 12 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 8, 2023, 2:28 PM CST (20:28 UTC)
In effect from
Feb 9, 2023, 3:00 AM CST
Expired
Feb 9, 2023, 4:29 PM CST
In force
13 hr
Issued by
NWS La Crosse, WI

Counties Clayton County, IA, Grant County, WI

The radar

The La Crosse radar (KARX), 108 km from the middle of the area, began a volume at 20:29 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.

What was reported inside it

TimeReportWhereRemark
Feb 9, 11:00 AM CSTSNOW 51 W Platteville, WI
Feb 9, 11:00 AM CSTSNOW 51 W Platteville, WI
Feb 9, 11:00 AM CSTSNOW 5Dickeyville, WI
Feb 9, 11:00 AM CSTSNOW 5Dickeyville, WI
Feb 9, 11:42 AM CSTHEAVY SNOW 5Lancaster, WI
Feb 9, 11:42 AM CSTHEAVY SNOW 5Lancaster, WI
Feb 9, 12:54 PM CSTSNOW 24 W Stitzer, WI
Feb 9, 12:54 PM CSTSNOW 24 W Stitzer, WI
Feb 9, 1:30 PM CSTSNOW 5Lancaster, WI
Feb 9, 1:30 PM CSTSNOW 7.52 Ene East Dubuque, WISNOWFALL SINCE 8 AM.
Feb 9, 2:25 PM CSTSNOW 6Cuba City, WI
Feb 9, 2:25 PM CSTSNOW 6Cuba City, WI

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.5 hours before the alert went out and 144 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, Davenport, at 12:00Z on 2023-02-08Temperature 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, Davenport, at 12:00Z on 2023-02-08The 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
1941 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

014 
WWUS43 KARX 082028
WSWARX

URGENT - WINTER WEATHER MESSAGE
National Weather Service La Crosse WI
228 PM CST Wed Feb 8 2023

...A Band of Mixed Precipitation and Heavy Snow Likely...

.A storm system spreads from south to north late tonight and 
early Thursday morning across northeast Iowa and southwest
Wisconsin. A mixture of snow, rain, and freezing rain may occur
early in the morning before transitioning to all snow by mid-
morning. As temperatures warm in the afternoon, the snow may mix
with rain before coming to an end in the late afternoon. The snow
that falls will be heavy in nature with rates of over 1 inch per
hour at times. This forecast has been fluctuating over the last 24
hours and may continue to shift slightly overnight, so it is
advised to pay close attention to the forecast.

IAZ030-WIZ061-090430-
/O.UPG.KARX.WS.A.0002.230209T0900Z-230210T0000Z/
/O.NEW.KARX.WS.W.0002.230209T0900Z-230210T0000Z/
Clayton-Grant-
Including the cities of Elkader and Platteville
228 PM CST Wed Feb 8 2023

...WINTER STORM WARNING IN EFFECT FROM 3 AM TO 6 PM CST
THURSDAY...

* WHAT...Heavy mixed precipitation expected. Total snow
  accumulations of 3 to 6 inches and ice accumulations from a
  glaze to one tenth of an inch. Winds gusting as high as 35 mph.

* WHERE...In Iowa, Clayton County. In Wisconsin, Grant County.

* WHEN...The best potential for a mix of snow and freezing rain 
  will be early in the morning, transitioning to snow by mid-
  morning and the possibly a rain and snow mix in the afternoon 
  before ending.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the morning and evening commute.

* ADDITIONAL DETAILS...There still remains some degree of
  uncertainty in how much freezing rain and rain will mix with 
  the snow, which could quickly impact snowfall amounts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

In Iowa, visit 511ia.org for road conditions. In Wisconsin,
visit 511wi.gov for road conditions.

&&

$$

IAZ029-WIZ055-090430-
/O.UPG.KARX.WS.A.0002.230209T0900Z-230210T0000Z/
/O.EXA.KARX.WW.Y.0006.230209T0900Z-230210T0000Z/
Fayette-Richland-
Including the cities of Oelwein and Richland Center
228 PM CST Wed Feb 8 2023

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 6 PM CST
THURSDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations of
  1 to 4 inches and ice accumulations of a light glaze.

* WHERE...In Iowa, Fayette County. In Wisconsin, Richland County.

* WHEN...The best potential for a mix of snow and freezing rain
  will be early in the morning, transitioning to snow by mid-
  morning and the possibly a rain and snow mix in the afternoon
  before ending.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...There still remains some degree of
  uncertainty in how much freezing rain and rain will mix with 
  the snow, which could quickly impact snowfall amounts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Iowa, visit 511ia.org for road conditions. In Wisconsin,
visit 511wi.gov for road conditions.

&&

$$

IAZ010-011-019-WIZ042>044-053-054-090430-
/O.CON.KARX.WW.Y.0006.230209T0900Z-230210T0000Z/
Winneshiek-Allamakee-Chickasaw-Monroe-Juneau-Adams-Vernon-
Crawford-
Including the cities of Decorah, Waukon, New Hampton, Sparta, 
Tomah, Mauston, Friendship, Viroqua, and Prairie Du Chien
228 PM CST Wed Feb 8 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO 6 PM
CST THURSDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations of
  1 to 4 inches and ice accumulations of a light glaze.

* WHERE...Portions of northeast Iowa and central, southwest and 
  west central Wisconsin.

* WHEN...The best potential for a mix of snow and freezing rain
  will be early in the morning, transitioning to snow by mid-
  morning and the possibly a rain and snow mix in the afternoon
  before ending.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...There still remains some degree of
  uncertainty in how much freezing rain and rain will mix with 
  the snow, which could quickly impact snowfall amounts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Iowa, visit 511ia.org for road conditions. In Wisconsin,
visit 511wi.gov for road conditions.

&&

$$

KDS
7 follow-up statements
599 
WWUS43 KARX 082045
WSWARX

URGENT - WINTER WEATHER MESSAGE
National Weather Service La Crosse WI
245 PM CST Wed Feb 8 2023

...A Band of Mixed Precipitation and Heavy Snow Likely...

.A storm system spreads from south to north late tonight and
early Thursday morning across northeast Iowa and southwest
Wisconsin. A mixture of snow, rain, and freezing rain may occur
early in the morning before transitioning to all snow by mid-
morning. As temperatures warm in the afternoon, the snow may mix
with rain before coming to an end in the late afternoon. The snow
that falls will be heavy in nature with rates of over 1 inch per
hour at times. This forecast has been fluctuating over the last
24 hours and may continue to shift slightly overnight, so it is
advised to pay close attention to the forecast.

IAZ030-WIZ061-090500-
/O.CON.KARX.WS.W.0002.230209T0900Z-230210T0000Z/
Clayton-Grant-
Including the cities of Elkader and Platteville
245 PM CST Wed Feb 8 2023

...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM CST
THURSDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 3 to 6 inches and ice accumulations from a 
  glaze to one tenth of an inch. Winds gusting as high as 35 mph.

* WHERE...In Iowa, Clayton County. In Wisconsin, Grant County.

* WHEN...The best potential for a mix of snow and freezing rain 
  will be early in the morning, transitioning to snow by mid- 
  morning and then possibly a rain and snow mix in the afternoon 
  before ending.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning and evening commute.

* ADDITIONAL DETAILS...There still remains some degree of 
  uncertainty in how much freezing rain and rain will mix with 
  the snow, which could quickly impact snowfall amounts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

In Iowa, visit 511ia.org for road conditions. In Wisconsin, visit
511wi.gov for road conditions.

&&

$$

IAZ010-011-019-029-WIZ042>044-053>055-090500-
/O.CON.KARX.WW.Y.0006.230209T0900Z-230210T0000Z/
Winneshiek-Allamakee-Chickasaw-Fayette-Monroe-Juneau-Adams-Vernon-
Crawford-Richland-
Including the cities of Decorah, Waukon, New Hampton, Oelwein, 
Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, 
and Richland Center
245 PM CST Wed Feb 8 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO 6 PM
CST THURSDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of 1 to 4 inches and ice accumulations of a light glaze.

* WHERE...Portions of northeast Iowa and central, southwest and 
  west central Wisconsin.

* WHEN...The best potential for a mix of snow and freezing rain
  will be early in the morning, transitioning to snow by mid-
  morning and then possibly a rain and snow mix in the afternoon 
  before ending.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...There still remains some degree of 
  uncertainty in how much freezing rain and rain will mix with 
  the snow, which could quickly impact snowfall amounts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

In Iowa, visit 511ia.org for road conditions. In Wisconsin, visit
511wi.gov for road conditions.

&&

$$

KDS
467 
WWUS43 KARX 090332
WSWARX

URGENT - WINTER WEATHER MESSAGE
National Weather Service La Crosse WI
932 PM CST Wed Feb 8 2023

...Heavy Snow Thursday For Northeast IA, southwest WI...

.A winter storm will push rain to a wintry mix across parts of 
northeast Iowa and southwest Wisconsin overnight, transitioning to
all snow early Thursday morning. Heavy wet snow will then fall 
for most of the morning hours, shifting east northeast in the 
afternoon. 

The storm has slowed up a bit, and shifted more southeast in it's
track...and thus the heavy snow band has shifted more southeast
too. The higher amounts and impacts will still be confined to
northeast Iowa and southwest Wisconsin. 

IAZ010-019-WIZ042-090445-
/O.CAN.KARX.WW.Y.0006.230209T0900Z-230210T0000Z/
Winneshiek-Chickasaw-Monroe-
Including the cities of Decorah, New Hampton, Sparta, and Tomah
932 PM CST Wed Feb 8 2023

...WINTER WEATHER ADVISORY IS CANCELLED...

The winter storm track is shifting a bit southeast, resulting in
less expected snowfall. Therefore, the advisory has been 
cancelled. 

$$

IAZ030-WIZ061-091145-
/O.CON.KARX.WS.W.0002.230209T0900Z-230210T0000Z/
Clayton-Grant-
Including the cities of Elkader and Platteville
932 PM CST Wed Feb 8 2023

...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM CST
THURSDAY...

* WHAT...Snow with accumulations from 3 to 6 inches. Locally
  higher amounts possible. A wintry mix possible at onset. Winds 
  gusting as high as 35 mph.

* WHERE...In Iowa, Clayton County. In Wisconsin, Grant County.

* WHEN...From 3 AM to 6 PM CST Thursday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions will impact the morning commute.



PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

In Iowa, visit 511ia.org for road conditions. In Wisconsin,
visit 511wi.gov for road conditions.

&&

$$

WIZ043-044-053-091145-
/O.EXT.KARX.WW.Y.0006.230209T1500Z-230210T0000Z/
Juneau-Adams-Vernon-
Including the cities of Mauston, Friendship, and Viroqua
932 PM CST Wed Feb 8 2023

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 9 AM TO 6 PM CST
THURSDAY...

* WHAT...Snow with accumulations of 1 to 3 inches.

* WHERE...Juneau, Adams and Vernon Counties.

* WHEN...From 9 AM to 6 PM CST Thursday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Visit 511wi.gov for road conditions.

&&

$$

IAZ011-029-WIZ054-055-091145-
/O.CON.KARX.WW.Y.0006.230209T0900Z-230210T0000Z/
Allamakee-Fayette-Crawford-Richland-
Including the cities of Waukon, Oelwein, Prairie Du Chien, 
and Richland Center
932 PM CST Wed Feb 8 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO 6 PM
CST THURSDAY...

* WHAT...Snow with accumulations of 1 to 3 inches. A wintry mix
  possible at onset.  

* WHERE...In Iowa, Allamakee and Fayette Counties. In Wisconsin, 
  Crawford and Richland Counties.

* WHEN...From 3 AM to 6 PM CST Thursday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Iowa, visit 511ia.org for road conditions. In Wisconsin,
visit 511wi.gov for road conditions.

&&

$$

Rieck
408 
WWUS43 KARX 090924
WSWARX

URGENT - WINTER WEATHER MESSAGE
National Weather Service La Crosse WI
324 AM CST Thu Feb 9 2023

...Heavy Snow Still Possible in Grant County...Elsewhere Snow
Totals were Reduced...

.It continues to look like the the winter storm will track further
southeast than originally expected today. Due to this, there was 
a reduction in the snow totals for much of the area. The Snow 
Advisory was cancelled for Adams, Juneau, and Vernon counties in 
southwest and central Wisconsin, and Allamakee and Fayette 
counties in northeast Iowa. The Winter Storm Warning was 
downgraded to Winter Weather Advisory in Clayton County in 
northeast Iowa. Grant County remains in the Winter Storm Warning 
with 3 to 7 inches of snow expected. The highest totals will be 
across the southern half of this county. 

IAZ030-091730-
/O.CAN.KARX.WS.W.0002.000000T0000Z-230210T0000Z/
/O.EXA.KARX.WW.Y.0006.230209T0900Z-230210T0000Z/
Clayton-
Including the city of Elkader
324 AM CST Thu Feb 9 2023

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Snow expected. Total snow accumulations of up to 4
  inches. The highest totals will be in the southeast part of this
  county.

* WHERE...Clayton County.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Visit 511ia.org for road conditions.

&&

$$

IAZ011-029-091030-
/O.CAN.KARX.WW.Y.0006.000000T0000Z-230210T0000Z/
Allamakee-Fayette-
Including the cities of Waukon and Oelwein
324 AM CST Thu Feb 9 2023

...WINTER WEATHER ADVISORY IS CANCELLED...

The winter storm track is tracking further southeast than
originally expected. As a result less expected snowfall. 
Therefore, the advisory has been cancelled. 

$$

WIZ043-044-053-091030-
/O.CAN.KARX.WW.Y.0006.230209T1500Z-230210T0000Z/
Juneau-Adams-Vernon-
Including the cities of Mauston, Friendship, and Viroqua
324 AM CST Thu Feb 9 2023

...WINTER WEATHER ADVISORY IS CANCELLED...

The winter storm track is tracking further southeast than
originally expected. As a result less expected snowfall. 
Therefore, the advisory has been cancelled.

$$

WIZ061-091730-
/O.CON.KARX.WS.W.0002.000000T0000Z-230210T0000Z/
Grant-
Including the city of Platteville
324 AM CST Thu Feb 9 2023

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Snow expected. Total snow accumulations of 3 to 7 inches.
  Highest snow totals across the southern portion of this county.
  Winds gusting as high as 35 mph.

* WHERE...Grant County.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Visit 511wi.gov for road conditions.

&&

$$

WIZ054-055-091730-
/O.CON.KARX.WW.Y.0006.000000T0000Z-230210T0000Z/
Crawford-Richland-
Including the cities of Prairie Du Chien and Richland Center
324 AM CST Thu Feb 9 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Snow expected. Total snow accumulations of up to 4
  inches. Highest totals will be in the southern portions of 
  these counties.

* WHERE...Crawford and Richland Counties.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Visit 511wi.gov for road conditions.

&&

$$

Boyne
304 
WWUS43 KARX 091607
WSWARX

URGENT - WINTER WEATHER MESSAGE
National Weather Service La Crosse WI
1007 AM CST Thu Feb 9 2023

...Heavy Snow in Grant County...Elsewhere Snow Totals were 
Reduced...

Heavy snow has been fast to accumulate in southern parts of Grant
County with reports of greater than 1 inch per hour snowfall
rates. With precipitation onset type of rain, slushy, slippery
roads have also been reported. Low level dry air entrained from
the northeast has limited northerly impacts of precipitation.
Forcing and increased snowfall rates expected to slowly pivot 
east into the afternoon. Previous headlines remain applicable,
therefore will be kept in place until further updates.

WIZ061-092115-
/O.CON.KARX.WS.W.0002.000000T0000Z-230210T0000Z/
Grant-
Including the city of Platteville
1007 AM CST Thu Feb 9 2023

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Heavy snow. Additional snow accumulations of up to two 
  inches. Winds gusting as high as 35 mph.

* WHERE...Grant County.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Visit 511wi.gov for road conditions.

&&

$$

IAZ030-WIZ054-055-092115-
/O.CON.KARX.WW.Y.0006.000000T0000Z-230210T0000Z/
Clayton-Crawford-Richland-
Including the cities of Elkader, Prairie Du Chien, 
and Richland Center
1007 AM CST Thu Feb 9 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of up to one inch.

* WHERE...In Iowa, Clayton County. In Wisconsin, Crawford and 
  Richland Counties.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Iowa, visit 511ia.org for road conditions. In Wisconsin,
visit 511wi.gov for road conditions.

&&

$$
808 
WWUS43 KARX 091930
WSWARX

URGENT - WINTER WEATHER MESSAGE
National Weather Service La Crosse WI
130 PM CST Thu Feb 9 2023

...Light to Moderate Snow Continuing through the Afternoon...

While the heaviest, quickest accumulating snowfall has departed
east of advisories and warnings, light to moderate snow continues
to create slippery to hazardous conditions. A small area of above
freezing surface temperatures shifting southeast towards these 
headlines will result in a mix of rain, furthering snow weights. 
Amounts this morning have demonstrated the sharp cutoff with over 
5 inches in Platteville, WI to T inches in Boscobel, WI. Light to
moderate snowfall expected to continue east through the 
afternoon into the early evening.

WIZ061-100000-
/O.CON.KARX.WS.W.0002.000000T0000Z-230210T0000Z/
Grant-
Including the city of Platteville
130 PM CST Thu Feb 9 2023

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Heavy snow. Additional snow accumulations of up to one 
  inch.

* WHERE...Grant County.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Visit 511wi.gov for road conditions.

&&

$$

IAZ030-WIZ054-055-100000-
/O.CON.KARX.WW.Y.0006.000000T0000Z-230210T0000Z/
Clayton-Crawford-Richland-
Including the cities of Elkader, Prairie Du Chien, 
and Richland Center
130 PM CST Thu Feb 9 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of up to one inch.

* WHERE...In Iowa, Clayton County. In Wisconsin, Crawford and 
  Richland Counties.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

In Iowa, visit 511ia.org for road conditions. In Wisconsin,
visit 511wi.gov for road conditions.

&&

$$
402 
WWUS43 KARX 092119
WSWARX

URGENT - WINTER WEATHER MESSAGE
National Weather Service La Crosse WI
319 PM CST Thu Feb 9 2023

...Snow Exiting Southeast...Impacts Decreasing...

The snow to rain snow mix was quickly exiting southeast late this
afternoon. Minor additional accumulations still possible across
parts of southwest Wisconsin. Temperatures have warmed into the
mid 30s across much of the area and road conditions have improved. 

IAZ030-WIZ054-055-092230-
/O.CAN.KARX.WW.Y.0006.000000T0000Z-230210T0000Z/
Clayton-Crawford-Richland-
Including the cities of Elkader, Prairie Du Chien, 
and Richland Center
319 PM CST Thu Feb 9 2023

...WINTER WEATHER ADVISORY IS CANCELLED...

The rain snow mix was exiting southeast late this afternoon with
little if any additional accumulations. The winter weather
advisory has been cancelled as a result. 

$$

WIZ061-100000-
/O.CON.KARX.WS.W.0002.000000T0000Z-230210T0000Z/
Grant-
Including the city of Platteville
319 PM CST Thu Feb 9 2023

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Snow with additional accumulations under an inch. 

* WHERE...Grant County.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep a flashlight, food, and water in your 
vehicle in case of an emergency. 

Visit 511wi.gov for road conditions.

&&

$$
261 
WWUS43 KARX 092229
WSWARX

URGENT - WINTER WEATHER MESSAGE
National Weather Service La Crosse WI
429 PM CST Thu Feb 9 2023


WIZ061-092330-
/O.CAN.KARX.WS.W.0002.000000T0000Z-230210T0000Z/
Grant-
Including the city of Platteville
429 PM CST Thu Feb 9 2023

...WINTER STORM WARNING IS CANCELLED...

The snow to rain snow mix continues to steadily exit southeast 
early this evening, with little if any addition snow accumulation 
expected. Therefore, the warning has been cancelled. 

$$

Rieck

What forecasters said that day

The local office's own words before this winter storm 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 winter storm warning went out at Feb 8, 11:24 AM CST, 3 hours 4 minutes earlier.

Area forecast discussion, Feb 8, 11:24 AM CST, 3 hours 4 minutes before
Area Forecast Discussion
National Weather Service La Crosse WI
1124 AM CST Wed Feb 8 2023

.DISCUSSION...(Today through Tuesday)
Issued at 349 AM CST Wed Feb 8 2023

Key Messages:

 - Recent trends favoring a shift in storm track tonight into
   Thursday have resulted in lower confidence in exactly where the
   anticipated band of heaviest snow will be situated and how much
   is to be expected.

 - Locally, northeast Iowa and southwest Wisconsin still stand the
   greatest chance of seeing several inches of heavy, wet snow.

 - Winter Storm Watch continues for now, with forthcoming headline
   changes to an advisory or warning likely later this morning.

A challenging winter system and snow forecast on tap for later
tonight into Thursday. A pronounced wave is evident on water vapor
imagery crossing into the Southern Plains early this morning. This
negatively tilted system will evolve into a rapidly strengthening
surface low as it pivots northward today and lifts into the Great
Lakes region by Thursday morning. Meanwhile the developing warm
conveyor belt will pump a moisture surge of 250-300% normal
precipitable water up from the Gulf into eastern Iowa and southern
Wisconsin. Strong upper divergence and jet dynamics will provide
favorable synoptic lift. However, the biggest precipitation driver
locally will be a strong band of 750-600mb frontogenesis producing a
period of robust lift from northeast Iowa into southwest Wisconsin
from late tonight into Thursday morning.

The biggest forecast challenge with this system revolves around the
storm track still trending a bit further south/east, with a
resultant shift in the band of heaviest snowfall. Recent ensemble
and deterministic runs have all shown this trend since this time
last night. For instance, the mean EPS 24-hour snowfall for this
event at KLSE was 5.8 inches with the 07.00Z run, but now with the
08.00Z run it's down to 2.2 inches. This unfortunately lends to
lower than desired confidence at this junction with snow onset just
about 24 hours away. For our area, confidence is still highest in
northeast Iowa and far southwest Wisconsin seeing the highest
potential for 3 to 6+ inches of snow, but need to see if that's
still the case by later this morning as new guidance grapples with
locking onto the uncertain storm track.

Given the lingering 11th hour uncertainty, have decided along with
neighboring offices to let the day shift evaluate trends as new
short-term guidance becomes available and determine how to proceed
with the existing Winter Storm Watch later this morning. This
morning's updated forecast obviously brought storm total snowfall
down substantially from yesterday due to the southward shift. Latest
trends suggest an advisory might suffice for roughly the
southeastern half of our forecast area, but still can't rule out the
need for a warning perhaps for a few counties in our far
southeast depending on where the band of heavy snow sets up. Only
headline change this morning is to remove Jackson County from the
watch given the lower totals that far north. Do anticipate a
tight gradient/cutoff in snow amounts on the northern edge, which
will likely become more defined as additional high-res data gets
ingested later this morning.

Where snow falls, it is expected to be the wet and heavy variety
with high liquid water content. Snow rates could approach 1 inch per
hour for a time over portions of northeast Iowa and southwest
Wisconsin Thursday morning between 6AM and noon. The good news is
temperatures around 30 to 35 will be very favorable for effective
road treatments. Could be a brief window of sleet around
precipitation onset time in our south before daybreak, but
otherwise this looks primarily like a snow event with some rain
mixing in at times where temperatures warm sufficiently. Morning
commute will be impacted for some, and expect reduced visibility
where snow falls heaviest. Could be some lingering afternoon
commute impacts for some. Due to the very wet nature of the snow
and winds now not quite as strong due to the system's southward
shift, not expecting significant blowing/drifting snow impacts.

A secondary upper wave will drop in on the heels of this departing
system Thursday afternoon/evening, bringing an additional 1/2 to 1
inch of snow to much of the area before finally ending overnight.

Pretty quiet thereafter into the weekend with the next precip
chances not until the middle of next week.

&&

.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
Issued at 1124 AM CST Wed Feb 8 2023

With the continued southward trend of the upcoming winter storm,
it now appears that the precipitation will stay south of both
airports. This will lead to VFR conditions expected to continue
until the winds swing around to the north as the area of low
pressure moves past the region. There has been a signal for the
development of MVFR ceilings associated with this wind shift and
that these lower ceilings may get into KRST by mid-morning.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...Winter Weather Advisory from 3 AM to 6 PM CST Thursday for
     WIZ042>044-053-054.

     Winter Storm Watch from late tonight through Thursday afternoon
     for WIZ055-061.

MN...NONE.
IA...Winter Weather Advisory from 3 AM to 6 PM CST Thursday for
     IAZ010-011-019.

     Winter Storm Watch from late tonight through Thursday afternoon
     for IAZ029-030.

&&

DISCUSSION...Kurz
AVIATION...04
Hazardous weather outlook, Feb 8, 10:43 AM CST, 3 hours 45 minutes before
Hazardous Weather Outlook
National Weather Service La Crosse WI
1043 AM CST Wed Feb 8 2023

IAZ008-009-018-MNZ079-086>088-094>096-WIZ017-029-032>034-041-
092045-
Mitchell-Howard-Floyd-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-
Houston-Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-
1043 AM CST Wed Feb 8 2023

This Hazardous Weather Outlook is for portions of north central
Iowa...northeast Iowa...southeast Minnesota...central Wisconsin...
north central Wisconsin and west central Wisconsin.

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Light snow accumulations may lead to areas of slippery travel on
Thursday.

.SPOTTER INFORMATION STATEMENT...

Snowfall reports would be appreciated on Thursday.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

IAZ029-030-WIZ055-061-092045-
Fayette-Clayton-Richland-Grant-
1043 AM CST Wed Feb 8 2023

This Hazardous Weather Outlook is for portions of northeast Iowa
and southwest Wisconsin.

.DAY ONE...Today and Tonight

Winter storm watch for snow in effect beginning late tonight with
the potential for slippery travel before daybreak.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Winter storm watch in effect through Thursday with potential for
heavy, wet snowfall. Impacts to the Thursday morning commute are
likely with slippery travel perhaps lingering into the evening.

.SPOTTER INFORMATION STATEMENT...

Snowfall reports would be appreciated on Thursday.

.EMERGENCY MANAGEMENT COORDINATION...

A decision support webinar has been scheduled for today
at 130 PM.

IAZ010-011-019-WIZ042>044-053-054-092045-
Winneshiek-Allamakee-Chickasaw-Monroe-Juneau-Adams-Vernon-
Crawford-
1043 AM CST Wed Feb 8 2023

This Hazardous Weather Outlook is for portions of northeast
Iowa...central Wisconsin...southwest Wisconsin and west central
Wisconsin.

.DAY ONE...Today and Tonight

Winter weather advisory for snow in effect beginning late tonight
with the potential for slippery travel before daybreak.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Winter weather advisory for snow in effect through Thursday. Storm
track could still shift, impacting how much snow will fall and
where. Impacts to the Thursday morning commute are likely with
slippery travel perhaps lingering into the evening.

.SPOTTER INFORMATION STATEMENT...

Snowfall reports would be appreciated on Thursday.

.EMERGENCY MANAGEMENT COORDINATION...

A decision support webinar has been scheduled for today
at 130 PM.

KDS

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 8, 10:29 AM CSTWinter Weather AdvisoryARXAdams, Crawford, Juneau, Monroe, Richland, Vernon29 hr

Nearby

Winter Storm Warnings in Wisconsin, 2023Winter Storm Warnings in Iowa, 2023Every winter storm warning in 2023

Sources

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