Alert archive / Iowa / Winter Weather Advisories in 2021
Winter Weather Advisory 13, NWS La Crosse, WI
NWS La Crosse, WI issued this winter weather advisory at Dec 9, 2021, 5:23 AM CST for 4 counties in Wisconsin; 6 counties in Minnesota; 8 counties in Iowa. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Dec 9, 2021, 5:23 AM CST (11:23 UTC)
- Expired
- Dec 9, 2021, 9:00 AM CST
- In force
- 4 hr
- Issued by
- NWS La Crosse, WI
Counties Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Winona County, MN, Crawford County, WI, Grant County, WI, Richland County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 69 km from the middle of the area, began a volume at 11:22 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, 11.4 hours before the alert went out and 214 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
- 1481 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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
2 follow-up statements
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
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 9, 11:41 AM CST | Winter Storm Warning | ARX | Adams, Buffalo, Clark, Jackson, Juneau, La Crosse and 4 more | 45 hr |
| Dec 9, 1:50 PM CST | Winter Weather Advisory | ARX | Adams, Crawford, Juneau, La Crosse, Monroe, Richland and 1 more | 43 hr |
Nearby
Winter Weather Advisories in Iowa, 2021Winter Weather Advisories in Minnesota, 2021Winter Weather Advisories in Wisconsin, 2021Every winter weather advisory 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.