Alert archive / Wisconsin / Winter Storm Watches in 2021
Winter Storm Watch 5, NWS La Crosse, WI
NWS La Crosse, WI issued this winter storm watch at Dec 8, 2021, 2:41 AM CST for 6 counties in Iowa; 12 counties in Wisconsin; 7 counties in Minnesota. It took effect at Dec 10, 2021, 12:00 PM CST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 8, 2021, 2:41 AM CST (08:41 UTC)
- In effect from
- Dec 10, 2021, 12:00 PM CST
- Expired
- Dec 9, 2021, 1:50 PM CST
- In force
- Issued by
- NWS La Crosse, WI
All 25 counties
Allamakee County, IA, Chickasaw 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, 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), 26 km from the middle of the area, began a volume at 08:42 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 00:00Z, 8.7 hours before the alert went out and 201 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 593 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
558 WWUS43 KARX 080841 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 241 AM CST Wed Dec 8 2021 IAZ008>011-018-019-MNZ079-086>088-094>096-WIZ029-032>034-041>044- 053>055-082100- /O.NEW.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Wabasha- Dodge-Olmsted-Winona-Mower-Fillmore-Houston-Clark-Buffalo- Trempealeau-Jackson-La Crosse-Monroe-Juneau-Adams-Vernon-Crawford- Richland- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Neillsville, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 241 AM CST Wed Dec 8 2021 ...WINTER STORM WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 4 to 8 inches possible. * WHERE...Portions of southwest into central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Rieck
10 follow-up statements
880 WWUS43 KARX 081936 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 136 PM CST Wed Dec 8 2021 IAZ008>011-018-019-MNZ079-086>088-094>096-WIZ029-032>034-041>044- 053>055-091000- /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Wabasha- Dodge-Olmsted-Winona-Mower-Fillmore-Houston-Clark-Buffalo- Trempealeau-Jackson-La Crosse-Monroe-Juneau-Adams-Vernon-Crawford- Richland- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Neillsville, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 136 PM CST Wed Dec 8 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 4 to 8 inches possible. * WHERE...Portions of central, southwest and west central Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ KAA
984 WWUS43 KARX 082036 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 236 PM CST Wed Dec 8 2021 WIZ017-090445- /O.EXA.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Taylor- Including the city of Medford 236 PM CST Wed Dec 8 2021 ...WINTER STORM WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 5 to 9 inches possible. * WHERE...Taylor County. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ IAZ008>011-018-019-MNZ079-086>088-094>096-WIZ029-032>034-041>044- 053>055-090445- /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Wabasha- Dodge-Olmsted-Winona-Mower-Fillmore-Houston-Clark-Buffalo- Trempealeau-Jackson-La Crosse-Monroe-Juneau-Adams-Vernon-Crawford- Richland- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Neillsville, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 236 PM CST Wed Dec 8 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 4 to 9 inches possible. * WHERE...Portions of central, southwest and west central Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ db
047 WWUS43 KARX 082101 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 301 PM CST Wed Dec 8 2021 IAZ008>011-018-019-MNZ079-086>088-094>096-WIZ017-029-032>034- 041>044-053>055-090515- /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Wabasha- Dodge-Olmsted-Winona-Mower-Fillmore-Houston-Taylor-Clark-Buffalo- Trempealeau-Jackson-La Crosse-Monroe-Juneau-Adams-Vernon-Crawford- Richland- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Medford, Neillsville, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 301 PM CST Wed Dec 8 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 5 to 9 inches possible. * WHERE...Portions of central, southwest and west central Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Baumgardt
569 WWUS43 KARX 090447 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 1047 PM CST Wed Dec 8 2021 IAZ008>011-018-019-MNZ079-086>088-094>096-WIZ017-029-032>034- 041>044-053>055-091300- /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Wabasha- Dodge-Olmsted-Winona-Mower-Fillmore-Houston-Taylor-Clark-Buffalo- Trempealeau-Jackson-La Crosse-Monroe-Juneau-Adams-Vernon-Crawford- Richland- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Medford, Neillsville, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 1047 PM CST Wed Dec 8 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 5 to 9 inches. * WHERE...All of southeast Minnesota and much of west-central Wisconsin and northeastern Iowa. * WHEN...The storm would move in midday Friday and exit by sunrise on Saturday. The heaviest snow is likely to fall Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ KDS
733 WWUS43 KARX 091021 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 421 AM CST Thu Dec 9 2021 IAZ008>011-018-019-MNZ079-086>088-094>096-WIZ017-029-032>034- 041>044-053>055-091830- /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Wabasha- Dodge-Olmsted-Winona-Mower-Fillmore-Houston-Taylor-Clark-Buffalo- Trempealeau-Jackson-La Crosse-Monroe-Juneau-Adams-Vernon-Crawford- Richland- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Medford, Neillsville, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 421 AM CST Thu Dec 9 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 5 to 12 inches possible. * WHERE...Portions of central, north central, southwest and west central Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Zapotocny
762 WWUS43 KARX 091123 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 523 AM CST Thu Dec 9 2021 IAZ008>011-018-019-MNZ086>088-094>096-WIZ053>055-091930- /O.NEW.KARX.WW.Y.0013.211209T1123Z-211209T1500Z/ /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Dodge- Olmsted-Winona-Mower-Fillmore-Houston-Vernon-Crawford-Richland- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Viroqua, Prairie Du Chien, and Richland Center 523 AM CST Thu Dec 9 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...For the Winter Weather Advisory,a mix of freezing rain, sleet and snow transitioning to all snow. Snow accumulations a trace to one inch. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 5 to 12 inches possible. * WHERE...Portions of southwest Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...For the Winter Weather Advisory, until 9 AM CST this morning. For the Winter Storm Watch, from Friday afternoon through late Friday night. * IMPACTS...This morning, roads may become slippery. For Friday night, travel could be very difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ IAZ029-030-WIZ061-091500- /O.NEW.KARX.WW.Y.0013.211209T1123Z-211209T1500Z/ Fayette-Clayton-Grant- Including the cities of Oelwein, Elkader, and Platteville 523 AM CST Thu Dec 9 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING... * WHAT...A mix of freezing rain, sleet and snow. A light glaze of ice. Snow accumulations a trace to one inch. * WHERE...In Wisconsin, Grant County. In Iowa, Fayette and Clayton Counties. * WHEN...Until 9 AM CST this morning. * IMPACTS...This morning, roads may become slippery. For Friday night, travel could be very difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ MNZ079-WIZ017-029-032>034-041>044-091930- /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Wabasha-Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe- Juneau-Adams- Including the cities of Wabasha, Medford, Neillsville, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, and Friendship 523 AM CST Thu Dec 9 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 5 to 12 inches possible. * WHERE...Portions of central, north central and west central Wisconsin and southeast Minnesota. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Zapotocny
497 WWUS43 KARX 091429 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 829 AM CST Thu Dec 9 2021 ...Wintry Mix Causing Some Slick Roads This Morning... .A wintry mix continues to shift through the area and roads are slick and crashes have been reported by the Department of Transportation in Minnesota and Iowa. Freezing rain is now changing over to sleet and snow in many areas. The precipitation will be finished by 10 am in Minnesota and Iowa. Mainly sleet and snow will fall through early afternoon in Wisconsin, however a brief period of freezing rain could occur and make roads slick. IAZ008>011-018-019-MNZ086>088-094>096-WIZ053>055-092230- /O.CON.KARX.WW.Y.0013.000000T0000Z-211209T1500Z/ /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Dodge- Olmsted-Winona-Mower-Fillmore-Houston-Vernon-Crawford-Richland- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Viroqua, Prairie Du Chien, and Richland Center 829 AM CST Thu Dec 9 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...For the Winter Weather Advisory,a mix of freezing rain, sleet and snow transitioning to all snow. Snow accumulations a trace to one inch. For the Winter Storm Watch, heavy snow possible. Total snow accumulations of 5 to 12 inches possible. * WHERE...Portions of southwest Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...For the Winter Weather Advisory, until 9 AM CST this morning. For the Winter Storm Watch, from Friday afternoon through late Friday night. * IMPACTS...This morning, roads may become slippery. For Friday night, travel could be very difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Monitor the latest forecasts for updates on this situation. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ IAZ029-030-WIZ061-091530- /O.CON.KARX.WW.Y.0013.000000T0000Z-211209T1500Z/ Fayette-Clayton-Grant- Including the cities of Oelwein, Elkader, and Platteville 829 AM CST Thu Dec 9 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... * WHAT...A mix of freezing rain, sleet and snow. A light glaze of ice. Snow accumulations a trace to one inch. * WHERE...In Wisconsin, Grant County. In Iowa, Fayette and Clayton Counties. * WHEN...Until 9 AM CST this morning. * IMPACTS...This morning, roads may become slippery. For Friday night, travel could be very difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ MNZ079-WIZ017-029-032>034-041>044-092230- /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Wabasha-Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe- Juneau-Adams- Including the cities of Wabasha, Medford, Neillsville, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, and Friendship 829 AM CST Thu Dec 9 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 5 to 12 inches possible. * WHERE...Portions of central, north central and west central Wisconsin and southeast Minnesota. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
462 WWUS43 KARX 091459 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 859 AM CST Thu Dec 9 2021 ...The Threat for Additional Freezing Rain Has Passed... .A wintry mix, including freezing rain and light icing, affected the area early this morning. Over the next hours, the precipitation will end if it has not already, and thus the threat for additional hazardous weather is ending. Some roads may still be slick, especially those untreated and less traveled. The snow storm for Friday still looks on track with the heaviest snows north and west of La Crosse, Wisconsin. IAZ008>011-018-019-MNZ086>088-094>096-WIZ053>055-092300- /O.EXP.KARX.WW.Y.0013.000000T0000Z-211209T1500Z/ /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Dodge- Olmsted-Winona-Mower-Fillmore-Houston-Vernon-Crawford-Richland- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Viroqua, Prairie Du Chien, and Richland Center 859 AM CST Thu Dec 9 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... ...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 AM CST THIS MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 5 to 12 inches possible. * WHERE...Portions of southwest Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ IAZ029-030-WIZ061-091600- /O.EXP.KARX.WW.Y.0013.000000T0000Z-211209T1500Z/ Fayette-Clayton-Grant- Including the cities of Oelwein, Elkader, and Platteville 859 AM CST Thu Dec 9 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 AM CST THIS MORNING... Precipitation will be ending and conditions improving. $$ MNZ079-WIZ017-029-032>034-041>044-092300- /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Wabasha-Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe- Juneau-Adams- Including the cities of Wabasha, Medford, Neillsville, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, and Friendship 859 AM CST Thu Dec 9 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 5 to 12 inches possible. * WHERE...Portions of central, north central and west central Wisconsin and southeast Minnesota. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Baumgardt
929 WWUS43 KARX 091741 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 1141 AM CST Thu Dec 9 2021 MNZ079-086>088-094-095-WIZ032>034-100145- /O.UPG.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ /O.NEW.KARX.WS.W.0006.211210T1500Z-211211T1200Z/ Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Buffalo-Trempealeau- Jackson- Including the cities of Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Alma, Arcadia, Whitehall, and Black River Falls 1141 AM CST Thu Dec 9 2021 ...WINTER STORM WARNING IN EFFECT FROM 9 AM FRIDAY TO 6 AM CST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 8 to 12 inches. * WHERE...Portions of west central Wisconsin and southeast Minnesota. * WHEN...From 9 AM Friday to 6 AM CST Saturday. The heaviest snow period will be Friday late afternoon and evening. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The hazardous conditions will 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. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ WIZ017-029-100145- /O.UPG.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ /O.NEW.KARX.WS.W.0006.211210T1800Z-211211T1200Z/ Taylor-Clark- Including the cities of Medford and Neillsville 1141 AM CST Thu Dec 9 2021 ...WINTER STORM WARNING IN EFFECT FROM NOON FRIDAY TO 6 AM CST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 8 to 12 inches. * WHERE...Taylor and Clark Counties. * WHEN...From noon Friday to 6 AM CST Saturday. The heaviest snow period will be Friday evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ IAZ008>011-018-019-MNZ096-WIZ041>044-053>055-100145- /O.CON.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Houston- La Crosse-Monroe-Juneau-Adams-Vernon-Crawford-Richland- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Caledonia, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 1141 AM CST Thu Dec 9 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations of 5 to 9 inches possible. * WHERE...Portions of southwest into central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...Friday afternoon through late Friday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Baumgardt
957 WWUS43 KARX 091950 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 150 PM CST Thu Dec 9 2021 IAZ008-009-MNZ096-WIZ041-042-053-100400- /O.UPG.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ /O.EXA.KARX.WS.W.0006.211210T1500Z-211211T1200Z/ Mitchell-Howard-Houston-La Crosse-Monroe-Vernon- Including the cities of Osage, Cresco, Caledonia, La Crosse, Sparta, Tomah, and Viroqua 150 PM CST Thu Dec 9 2021 ...WINTER STORM WARNING IN EFFECT FROM 9 AM FRIDAY TO 6 AM CST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 7 inches. Winds gusting as high as 35 mph creating some blowing and drifting snow. * WHERE...Portions of southwest and west central Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...From 9 AM Friday to 6 AM CST Saturday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ WIZ043-044-100400- /O.UPG.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ /O.EXA.KARX.WS.W.0006.211210T1800Z-211211T1200Z/ Juneau-Adams- Including the cities of Mauston and Friendship 150 PM CST Thu Dec 9 2021 ...WINTER STORM WARNING IN EFFECT FROM NOON FRIDAY TO 6 AM CST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 7 inches. * WHERE...Juneau and Adams Counties. * WHEN...From noon Friday to 6 AM CST Saturday. * IMPACTS...Travel could be very difficult. 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. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ MNZ079-086>088-094-095-WIZ032>034-100400- /O.CON.KARX.WS.W.0006.211210T1500Z-211211T1200Z/ Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Buffalo-Trempealeau- Jackson- Including the cities of Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Alma, Arcadia, Whitehall, and Black River Falls 150 PM CST Thu Dec 9 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM FRIDAY TO 6 AM CST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 7 to 13 inches. Winds gusting as high as 35 mph creating some blowing and drifting snow. * WHERE...Portions of west central Wisconsin and southeast Minnesota. * WHEN...From 9 AM Friday to 6 AM CST Saturday. * IMPACTS...Travel could be very difficult to impossible. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ WIZ017-029-100400- /O.CON.KARX.WS.W.0006.211210T1800Z-211211T1200Z/ Taylor-Clark- Including the cities of Medford and Neillsville 150 PM CST Thu Dec 9 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO 6 AM CST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 8 to 11 inches. Winds gusting as high as 30 mph creating some blowing and drifting snow. * WHERE...Taylor and Clark Counties. * WHEN...From noon Friday to 6 AM CST Saturday. * IMPACTS...Travel could be very difficult. 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. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ IAZ010-011-018-019-WIZ054-055-100400- /O.UPG.KARX.WS.A.0005.211210T1800Z-211211T1200Z/ /O.NEW.KARX.WW.Y.0014.211210T1800Z-211211T1200Z/ Winneshiek-Allamakee-Floyd-Chickasaw-Crawford-Richland- Including the cities of Decorah, Waukon, Charles City, New Hampton, Prairie Du Chien, and Richland Center 150 PM CST Thu Dec 9 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM NOON FRIDAY TO 6 AM CST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches. Winds gusting as high as 35 mph creating some blowing and drifting snow. * WHERE...Portions of southwest Wisconsin and north central and northeast Iowa. * WHEN...From noon Friday to 6 AM CST Saturday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For the latest road conditions, check 511ia.org in Iowa, 511mn.org in Minnesota, and 511wi.gov in Wisconsin. && $$ 04
What forecasters said that day
The local office's own words before this winter storm watch 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 watch went out at Dec 7, 10:45 PM CST, 3 hours 56 minutes earlier.
Area forecast discussion, Dec 7, 10:45 PM CST, 3 hours 56 minutes before
Area Forecast Discussion National Weather Service La Crosse WI 1045 PM CST Tue Dec 7 2021 .UPDATE... Issued at 423 PM CST Tue Dec 7 2021 Have extended PoPs for another 4-6 hours this evening given the current location and trajectories of a pair of shortwaves upstream over western MN. Snow--albeit light--continues to be reported as far west as Willmar/Glenwood, MN in conjunction with the second wave up towards the Red River Valley. The heaviest snow should be in the next 3-4 hours with very high snow ratios resulting in a quick inch or more of snow in most locales along a broad swath of the I-94 corridor. Areas around Rochester reported upwards of 2-3+ inches of snow with this system earlier in the day. && .SHORT TERM...(Tonight through Wednesday) Issued at 222 PM CST Tue Dec 7 2021 Still dealing with impact of passing short wave trough this afternoon, which might be a bit stronger than previously thought. Surface low as of 20z is is tracking across far southern Minnesota with area of snow advancing along with it. Lift through dendritic zone is maximizing this afternoon just ahead of this feature so quick 1-2 inches of 25:1 snow being observed. And with a stronger low, seeing tighter pressure gradient and some drifting given how fluffy snow is. Still expect this to gradually end from west to east going into the evening as feature moves out. A bit of a break on Wednesday with short term ridging. Even with colder airmass should see more sunshine and light winds for a seasonal day. .LONG TERM...(Wednesday Night through Tuesday) Issued at 222 PM CST Tue Dec 7 2021 By Wednesday night, mid level ridge passage will begin shift of overall flow. Next short wave trough will exit the Plains and as this approaches, expect low level warm air advection and lift to help saturate and break out precipitation by Thursday morning. This is especially true east of the Mississippi River. Bulk of this should be snow but some temperature profiles could support brief mix with hints of some melting. In any event, precipitation looks fairly light. If short duration mixed or freezing precipitation does materialize, might see some matching brief impacts to travel. Dive into late week details continues to support growing confidence for an impactful winter event. Medium range guidance and ensembles continue to be in good agreement that parts of our service area are in play for heavy snow potential along with a mixed precipitation threat. This potential storm has many classic characteristics, including coupled jet structure aiding lift, positive tilt with ample moisture, strong quasi-geostropic forcing signal, strong lift through the dendritic growth zone, clear deformation zone with persistent mid-level frontogenetic band, and likely longer precipitation time. Ensemble data continues to support possible deformation zone crossing our west and northern counties but some differences in clusters between model groups. Did notice some increase in blend of models /NBM/ and tighter snowfall gradient but still not locked on to one solution. Warmer air aloft does advect into southern areas ahead of system which could create more mixed precipitation south of KLSE, including more liquid closer to KDBQ. Convective threat could produce more sleet. In addition, possibility of dry slot and loss of ice exists so plenty of questions regarding location of these threats. Possibility of headlines could start up next forecast period. The other weather aspect that has been well advertised is the warm up behind the early weekend event. As broad upper ridge quickly sets in across mid CONUS, warm air advection will return quickly. But this might all be tempered somewhat with a fresh snowpack so have moderated amount of warmup for time being. && .AVIATION...(For the 06Z TAFS through 06Z Wednesday night) Issued at 1029 PM CST Tue Dec 7 2021 Mainly VFR conditions are forecast for the TAF period as light snow moves out of the area, but some MVFR ceilings/visibilities are possible over southeast MN and western Wisconsin towards the 09-15Z timeframe (mainly affecting the RST TAF). Confidence in this possibility was not high enough to mention in the TAFs at this time. Light and variable winds now shift to the northwest overnight, then back to the south Wednesday afternoon. && .ARX WATCHES/WARNINGS/ADVISORIES... WI...None. MN...None. IA...None. && UPDATE...Skow SHORT TERM...Shea LONG TERM...Shea AVIATION...Skow
Hazardous weather outlook, Dec 7, 10:50 PM CST, 3 hours 51 minutes before
Hazardous Weather Outlook National Weather Service La Crosse WI 1050 PM CST Tue Dec 7 2021 MNZ079-WIZ017-029-032>034-090900- Wabasha-Taylor-Clark-Buffalo-Trempealeau-Jackson- 1050 PM CST Tue Dec 7 2021 This Hazardous Weather Outlook is for portions of northeast Iowa...southeast Minnesota...and southwest into central Wisconsin. .DAY ONE...Tonight Light snow gradually ends this evening from and west to east with slick roads still possible at times. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Another round of snow is likely Thursday. Accumulations from 1" north of I-94 to a few tenths south of there are currently expected. A winter storm moves in for Friday into Saturday. Confidence is high the storm will produce a heavy snow band, likely some blowing and drifting snow, along with the threat for freezing precipitation. However, with some uncertainty on the storm track, details on what falls where and how much is unclear. Travel impacts are expected and should be planned for. .SPOTTER INFORMATION STATEMENT... Snowfall reports are appreciated. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. IAZ008>011-018-019-029-030-MNZ086>088-094>096-WIZ041>044-053>055- 061-090900- Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Dodge-Olmsted-Winona-Mower-Fillmore-Houston-La Crosse- Monroe-Juneau-Adams-Vernon-Crawford-Richland-Grant- 1050 PM CST Tue Dec 7 2021 This Hazardous Weather Outlook is for portions of north central Iowa...northeast Iowa and southwest Wisconsin. .DAY ONE...Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Another round of snow is likely Thursday. Accumulations from 1" north of I-94 to a few tenths south of there are currently expected. A winter storm moves in for Friday into Saturday. Confidence is high the storm will produce a heavy snow band, likely some blowing and drifting snow, along with the threat for freezing precipitation. However, with some uncertainty on the storm track, details on what falls where and how much is unclear. Travel impacts are expected and should be planned for. .SPOTTER INFORMATION STATEMENT... No action needed. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. NOFWD KDS
In the hours before
Local storm report, Dec 7, 8:49 PM CST, 5 hours 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
849 PM CST TUE DEC 7 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0726 PM SNOW 5 NE MONTANA 44.40N 91.61W
12/07/2021 E3.0 INCH BUFFALO WI PUBLIC
&&Local storm report, Dec 7, 8:50 PM CST, 5 hours 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
850 PM CST TUE DEC 7 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0850 PM SNOW KASSON 44.03N 92.75W
12/07/2021 M3.0 INCH DODGE MN PUBLIC
&&Nearby
Winter Storm Watches in Wisconsin, 2021Winter Storm Watches in Minnesota, 2021Winter Storm Watches in Iowa, 2021Every winter storm watch in 2021
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.