Alert archive / Wisconsin / Winter Weather Advisories in 2021
Winter Weather Advisory 6, NWS La Crosse, WI
NWS La Crosse, WI issued this winter weather advisory at Feb 3, 2021, 1:53 PM CST for 13 counties in Wisconsin; 8 counties in Iowa; 7 counties in Minnesota. It took effect at Feb 4, 2021, 3:00 AM CST. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Feb 3, 2021, 1:53 PM CST (19:53 UTC)
- In effect from
- Feb 4, 2021, 3:00 AM CST
- Expired
- Feb 5, 2021, 12:00 AM CST
- In force
- 21 hr
- Issued by
- NWS La Crosse, WI
All 28 counties
Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Clark County, WI, Crawford County, WI, Grant County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Monroe County, WI, Richland County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 27 km from the middle of the area, began a volume at 19:53 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, 7.9 hours before the alert went out and 210 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1233 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
935 WWUS43 KARX 031953 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 153 PM CST Wed Feb 3 2021 ...Snow, Wind, Impacts To Travel Thursday and Thursday Night... .A wintry mix or rain will slide across the area late tonight, transitioning to snow by early morning. The snow will quickly push east northeast through the day, gradually exiting across the northern Great Lakes by late evening. A few inches of snow are expected, with the higher amounts across Wisconsin. The bulk will fall during the day Thursday. In addition, a light icing cannot be ruled out for the Thursday morning commute thanks to that wintry mix. In addition, winds will be on the increase Thursday afternoon, staying strong and gusty through Thursday night. Gusts from 30 to 40 mph are anticipated. Areas of blowing and drifting snow will result. A short period of ground blizzard conditions are possible across the wind prone, open areas of southeast Minnesota and northeast Iowa, with this threat centered on the afternoon to early evening hours. Travel could become dangerous in some areas later Thursday afternoon into the overnight. IAZ008>010-018-019-029-MNZ086-087-094-095-040400- /O.UPG.KARX.WS.A.0003.210204T1200Z-210205T1200Z/ /O.NEW.KARX.WW.Y.0006.210204T0900Z-210205T0600Z/ Mitchell-Howard-Winneshiek-Floyd-Chickasaw-Fayette-Dodge-Olmsted- Mower-Fillmore- Including the cities of Osage, Cresco, Decorah, Charles City, New Hampton, Oelwein, Dodge Center, Rochester, Austin, and Preston 153 PM CST Wed Feb 3 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM THURSDAY TO MIDNIGHT CST THURSDAY NIGHT... * WHAT...Snow expected. Accumulations of 1 to 3 inches. Winds gusting as high as 40 mph. Drifting and blowing snow. * WHERE...Portions of north central and northeast Iowa and southeast Minnesota. * WHEN...From 3 AM Thursday to midnight CST Thursday night. * IMPACTS...Plan on slippery road conditions. Blowing snow could significantly reduce visibility. The hazardous conditions will impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ011-030-MNZ079-088-096-WIZ032-033-041-053>055-061-040400- /O.UPG.KARX.WS.A.0003.210204T1200Z-210205T1200Z/ /O.NEW.KARX.WW.Y.0006.210204T0900Z-210205T0600Z/ Allamakee-Clayton-Wabasha-Winona-Houston-Buffalo-Trempealeau- La Crosse-Vernon-Crawford-Richland-Grant- Including the cities of Waukon, Elkader, Wabasha, Winona, Caledonia, Alma, Arcadia, Whitehall, La Crosse, Viroqua, Prairie Du Chien, Richland Center, and Platteville 153 PM CST Wed Feb 3 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM THURSDAY TO MIDNIGHT CST THURSDAY NIGHT... * WHAT...Snow expected. Accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. Patchy blowing and drifting. * WHERE...Portions of southwest and west central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...From 3 AM Thursday to midnight CST Thursday night. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WIZ017-029-034-042>044-040400- /O.UPG.KARX.WS.A.0003.210204T0900Z-210205T1200Z/ /O.NEW.KARX.WW.Y.0006.210204T0900Z-210205T0600Z/ Taylor-Clark-Jackson-Monroe-Juneau-Adams- Including the cities of Medford, Neillsville, Black River Falls, Sparta, Tomah, Mauston, and Friendship 153 PM CST Wed Feb 3 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM THURSDAY TO MIDNIGHT CST THURSDAY NIGHT... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. Patchy blowing and drifting snow. * WHERE...Portions of west central Wisconsin. * WHEN...From 3 AM Thursday to midnight CST Thursday night. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Rieck
9 follow-up statements
656 WWUS43 KARX 040221 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 821 PM CST Wed Feb 3 2021 ...Snow, Wind, Impacts To Travel Thursday and Thursday Night... .A light wintry mix will develop overnight, transitioning to snow by early morning. The snow will quickly push east northeast through the day, gradually exiting across the northern Great Lakes by late evening. The morning commute will be slick for much of the area as snow increases. A few inches of snow are expected, with the higher amounts across Wisconsin. The bulk will fall during the day Thursday with rates up to 1 inch per hour possible in the heaviest snow. In addition, winds will be on the increase Thursday afternoon, staying strong and gusty through Thursday night. Gusts from 30 to 40 mph are anticipated. Areas of blowing and drifting snow will result. A short period of ground blizzard conditions are possible across the wind prone, open areas of southeast Minnesota and northeast Iowa, with this threat centered on the afternoon to early evening hours. Travel could become dangerous in some areas later Thursday afternoon into the overnight. IAZ008>010-018-019-029-MNZ086-087-094-095-041030- /O.CON.KARX.WW.Y.0006.210204T0900Z-210205T0600Z/ Mitchell-Howard-Winneshiek-Floyd-Chickasaw-Fayette-Dodge-Olmsted- Mower-Fillmore- Including the cities of Osage, Cresco, Decorah, Charles City, New Hampton, Oelwein, Dodge Center, Rochester, Austin, and Preston 821 PM CST Wed Feb 3 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM THURSDAY TO MIDNIGHT CST THURSDAY NIGHT... * WHAT...Snow expected. Accumulations of 1 to 3 inches. Winds gusting as high as 40 mph. Drifting and blowing snow. * WHERE...Portions of north central and northeast Iowa and southeast Minnesota. * WHEN...From 3 AM Thursday to midnight CST Thursday night. * IMPACTS...Plan on slippery road conditions. Blowing snow could significantly reduce visibility with brief whiteouts possible in open areas. The hazardous conditions will impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ011-030-MNZ079-088-096-WIZ032-033-041-053>055-061-041030- /O.CON.KARX.WW.Y.0006.210204T0900Z-210205T0600Z/ Allamakee-Clayton-Wabasha-Winona-Houston-Buffalo-Trempealeau- La Crosse-Vernon-Crawford-Richland-Grant- Including the cities of Waukon, Elkader, Wabasha, Winona, Caledonia, Alma, Arcadia, Whitehall, La Crosse, Viroqua, Prairie Du Chien, Richland Center, and Platteville 821 PM CST Wed Feb 3 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM THURSDAY TO MIDNIGHT CST THURSDAY NIGHT... * WHAT...Snow expected. Accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. Patchy blowing and drifting. * WHERE...Portions of southwest and west central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...From 3 AM Thursday to midnight CST Thursday night. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WIZ017-029-034-042>044-041030- /O.CON.KARX.WW.Y.0006.210204T0900Z-210205T0600Z/ Taylor-Clark-Jackson-Monroe-Juneau-Adams- Including the cities of Medford, Neillsville, Black River Falls, Sparta, Tomah, Mauston, and Friendship 821 PM CST Wed Feb 3 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM THURSDAY TO MIDNIGHT CST THURSDAY NIGHT... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. Patchy blowing and drifting snow. * WHERE...Portions of west central Wisconsin. * WHEN...From 3 AM Thursday to midnight CST Thursday night. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
124 WWUS43 KARX 040953 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 353 AM CST Thu Feb 4 2021 ...Travel To Deteriorate Through the Day... .A light wintry mix will quickly change to snow this morning across the area.A light glazing of ice has been reported along and north of Interstate 90 overnight so use caution heading out. Snow will accumulate today across the area and travel will deteriorate. Winds will begin to increase this afternoon with gusts of 30 to 40 mph causing blowing and drifting snow. By late afternoon and during the evening, some areas could see pockets of whiteout conditions in Iowa and Minnesota. Blizzard conditions cannot be ruled out. Snow amounts will generally be 2 to 6 inches, with higher amounts north of Interstate 94 in Wisconsin. The snow will diminish this evening but the higher winds will persist through midnight before diminishing. Travel could become dangerous in some areas later today into the overnight. WIZ017-029-041900- /O.UPG.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ /O.NEW.KARX.WS.W.0003.210204T0953Z-210205T1200Z/ Taylor-Clark- Including the cities of Medford and Neillsville 353 AM CST Thu Feb 4 2021 ...WINTER STORM WARNING IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Mixed precipitation becoming all snow. Accumulations of 5 to 7 inches and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Taylor and Clark Counties. * WHEN...Until 6 AM CST Friday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. 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. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ008>010-018-019-029-030-MNZ086-087-094-095-WIZ061-041900- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Mitchell-Howard-Winneshiek-Floyd-Chickasaw-Fayette-Clayton-Dodge- Olmsted-Mower-Fillmore-Grant- Including the cities of Osage, Cresco, Decorah, Charles City, New Hampton, Oelwein, Elkader, Dodge Center, Rochester, Austin, Preston, and Platteville 353 AM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Mixed precipitation becopming all snow. Snow accumulations of 3 to 5 inches and ice accumulations of a light glaze. Winds gusting as high as 40 mph. * WHERE...Portions of southwest Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ011-MNZ079-088-096-WIZ032>034-041>044-053>055-041900- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Allamakee-Wabasha-Winona-Houston-Buffalo-Trempealeau-Jackson- La Crosse-Monroe-Juneau-Adams-Vernon-Crawford-Richland- Including the cities of Waukon, Wabasha, Winona, Caledonia, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 353 AM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Mixed precipitation becoming all snow. Snow accumulations of 3 to 6 inches and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Portions of central, southwest and west central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ baumgardt
838 WWUS43 KARX 041301 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 701 AM CST Thu Feb 4 2021 ...Snowing Moving Southeast Minnesota... .At 7 am, radar indicated snow falling across portions of southeast Minnesota mainly west of Highway 52. Snow was also approaching northeast Iowa with moderate snow reported at Mason City. Snow will spread east and become heavy at times early this morning for all of southeast Minnesota, northeast Iowa, and western Wisconsin. Snow will accumulate today across the area and travel will deteriorate. Winds will begin to increase this afternoon with gusts of 30 to 40 mph causing blowing and drifting snow. By late afternoon and during the evening, some areas could see pockets of whiteout conditions in Iowa and Minnesota. Blizzard conditions cannot be ruled out. The snow will diminish this evening but the higher winds will persist through midnight before diminishing. Travel could become dangerous in some areas later today into the overnight. WIZ017-029-042115- /O.CON.KARX.WS.W.0003.000000T0000Z-210205T1200Z/ Taylor-Clark- Including the cities of Medford and Neillsville 701 AM CST Thu Feb 4 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Mixed precipitation becoming all snow. Accumulations of 5 to 7 inches and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Taylor and Clark Counties. * WHEN...Until 6 AM CST Friday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ008>010-018-019-029-030-MNZ086-087-094-095-WIZ061-042115- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Mitchell-Howard-Winneshiek-Floyd-Chickasaw-Fayette-Clayton-Dodge- Olmsted-Mower-Fillmore-Grant- Including the cities of Osage, Cresco, Decorah, Charles City, New Hampton, Oelwein, Elkader, Dodge Center, Rochester, Austin, Preston, and Platteville 701 AM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Mixed precipitation becoming all snow. Snow accumulations of 3 to 5 inches and ice accumulations of a light glaze. Winds gusting as high as 40 mph. * WHERE...Portions of southwest Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ011-MNZ079-088-096-WIZ032>034-041>044-053>055-042115- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Allamakee-Wabasha-Winona-Houston-Buffalo-Trempealeau-Jackson- La Crosse-Monroe-Juneau-Adams-Vernon-Crawford-Richland- Including the cities of Waukon, Wabasha, Winona, Caledonia, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 701 AM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Mixed precipitation becoming all snow. Snow accumulations of 3 to 6 inches and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Portions of central, southwest and west central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Baumgardt
912 WWUS43 KARX 041456 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 856 AM CST Thu Feb 4 2021 ...Snowing Moving Southeast Minnesota... .At 9 am, radar indicated snow falling across much of southeast Minnesota and northeast Iowa, and parts of western Wisconsin. The snow will continue to spread across the entire area this morning. Snow covered and slippery roads were reported across southeast Minnesota and northeast Iowa. The road conditions in western Wisconsin will become snow covered during the remainder of the morning. Winds will begin to increase this afternoon with gusts of 30 to 40 mph causing blowing and drifting snow. By late afternoon and during the evening, some areas could see pockets of whiteout conditions in Iowa and Minnesota. Blizzard conditions cannot be ruled out. The snow will diminish this evening but the higher winds will persist through midnight before diminishing. Travel could become dangerous in some areas later today into the overnight. WIZ017-029-042300- /O.CON.KARX.WS.W.0003.000000T0000Z-210205T1200Z/ Taylor-Clark- Including the cities of Medford and Neillsville 856 AM CST Thu Feb 4 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Mixed precipitation becoming all snow. Accumulations of 5 to 7 inches and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Taylor and Clark Counties. * WHEN...Until 6 AM CST Friday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. 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. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ008>010-018-019-029-030-MNZ086-087-094-095-WIZ061-042300- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Mitchell-Howard-Winneshiek-Floyd-Chickasaw-Fayette-Clayton-Dodge- Olmsted-Mower-Fillmore-Grant- Including the cities of Osage, Cresco, Decorah, Charles City, New Hampton, Oelwein, Elkader, Dodge Center, Rochester, Austin, Preston, and Platteville 856 AM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Mixed precipitation becoming all snow. Snow accumulations of 3 to 5 inches and ice accumulations of a light glaze. Winds gusting as high as 40 mph. * WHERE...Portions of southwest Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ011-MNZ079-088-096-WIZ032>034-041>044-053>055-042300- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Allamakee-Wabasha-Winona-Houston-Buffalo-Trempealeau-Jackson- La Crosse-Monroe-Juneau-Adams-Vernon-Crawford-Richland- Including the cities of Waukon, Wabasha, Winona, Caledonia, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 856 AM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Mixed precipitation becoming all snow. Snow accumulations of 3 to 6 inches and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Portions of central, southwest and west central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Boyne
195 WWUS43 KARX 041658 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 1058 AM CST Thu Feb 4 2021 ...Several Bands of Snow Moving through the Area... .At 11 am, radar indicated several snow bands moving across northeast Iowa, southeast Minnesota, and western Wisconsin. Snow- covered roads have been reported across the entire region. Through 1 PM, expect up to 2 inches of additional snow west of the Mississippi River and 2 to 3 inches of additional snow across western Wisconsin. Snow totals will range from 3 to 7 inches by this evening. The highest snow totals will north of Interstate 94. Winds will begin to increase this afternoon with gusts of 25 to 35 mph causing blowing and drifting snow. By late afternoon and during the evening, some areas could see pockets of whiteout conditions in Iowa and Minnesota. The snow will diminish across central and north-central Wisconsin this evening but the higher winds will persist through midnight before diminishing. Travel could become dangerous in some areas later today into the overnight. WIZ017-029-050100- /O.CON.KARX.WS.W.0003.000000T0000Z-210205T1200Z/ Taylor-Clark- Including the cities of Medford and Neillsville 1058 AM CST Thu Feb 4 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Mixed precipitation becoming all snow. Accumulations of 5 to 7 inches and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Taylor and Clark Counties. * WHEN...Until 6 AM CST Friday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ008>010-018-019-029-030-MNZ086-087-094-095-WIZ061-050100- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Mitchell-Howard-Winneshiek-Floyd-Chickasaw-Fayette-Clayton-Dodge- Olmsted-Mower-Fillmore-Grant- Including the cities of Osage, Cresco, Decorah, Charles City, New Hampton, Oelwein, Elkader, Dodge Center, Rochester, Austin, Preston, and Platteville 1058 AM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Mixed precipitation becoming all snow. Snow accumulations of 2 to 4 inches and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Portions of southwest Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ011-MNZ079-088-096-WIZ032>034-041>044-053>055-050100- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Allamakee-Wabasha-Winona-Houston-Buffalo-Trempealeau-Jackson- La Crosse-Monroe-Juneau-Adams-Vernon-Crawford-Richland- Including the cities of Waukon, Wabasha, Winona, Caledonia, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 1058 AM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Mixed precipitation becoming all snow. Snow accumulations of 3 to 6 inches and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Portions of central, southwest and west central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Boyne
658 WWUS43 KARX 041909 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 109 PM CST Thu Feb 4 2021 ...Snow Continues across Much of the Area... .At 1 PM, radar showed snow falling across northeast Iowa, southeast Minnesota, and western Wisconsin. Snow-covered roads continue to be reported by the DOTs across the entire region. Through 3 PM, expect up to 2 inches of additional snow west of the Mississippi River and 2 to 3 inches of additional snow across western Wisconsin. The snow will end west of the Mississippi River by mid afternoon and by sunset across west central and southwest Wisconsin. Some snow will continue into the evening for central and north-central Wisconsin. Snow totals by this evening will range from 3 to 7 inches. The highest snow totals will be north of Interstate 94. Winds gusts of 25 to 35 mph will cause blowing and drifting snow through this evening. This may result in pockets of whiteout conditions in northeast Iowa and southeast Minnesota. Travel could be hazardous in some areas this afternoon and tonight. WIZ017-029-050315- /O.CON.KARX.WS.W.0003.000000T0000Z-210205T1200Z/ Taylor-Clark- Including the cities of Medford and Neillsville 109 PM CST Thu Feb 4 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Snow. Accumulations of 5 to 7 inches. Winds gusting as high as 35 mph. These winds will result in some blowing and drifting snow. * WHERE...Taylor and Clark Counties. * WHEN...Until 6 AM CST Friday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The hazardous conditions will impact this evening's commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ008>010-018-019-029-030-MNZ086-087-094-095-WIZ061-050315- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Mitchell-Howard-Winneshiek-Floyd-Chickasaw-Fayette-Clayton-Dodge- Olmsted-Mower-Fillmore-Grant- Including the cities of Osage, Cresco, Decorah, Charles City, New Hampton, Oelwein, Elkader, Dodge Center, Rochester, Austin, Preston, and Platteville 109 PM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Snow. Accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. These winds will result in some blowing and drifting snow. * WHERE...Portions of southwest Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions will impact this evening's commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ011-MNZ079-088-096-WIZ032>034-041>044-053>055-050315- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Allamakee-Wabasha-Winona-Houston-Buffalo-Trempealeau-Jackson- La Crosse-Monroe-Juneau-Adams-Vernon-Crawford-Richland- Including the cities of Waukon, Wabasha, Winona, Caledonia, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 109 PM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Snow. Accumulations of 3 to 6 inches. Winds gusting as high as 35 mph. These winds will result in some blowing and drifting snow. * WHERE...Portions of central, southwest and west central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions will impact this evening's commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Boyne
622 WWUS43 KARX 042047 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 247 PM CST Thu Feb 4 2021 ...Conditions Worsening in Northeast Iowa... .The combination of new snow and strong northwest winds are leading to more drifting, poor visibilities, and related traffic accidents across mainly northeast Iowa at mid afternoon. Because of this an extra area of warnings is being extended. Meanwhile snow will continue to pile up mainly on the Wisconsin side with 3 to 7 inches possible. Winds gusts of 25 to 40 mph will cause blowing and drifting snow through this evening. This may result in pockets of whiteout conditions, mainly in open areas of northeast Iowa and southeast Minnesota. Travel will remain poor to hazardous in most areas this afternoon and tonight. IAZ008-009-018-019-029-030-050500- /O.UPG.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ /O.EXB.KARX.WS.W.0003.000000T0000Z-210205T0600Z/ Mitchell-Howard-Floyd-Chickasaw-Fayette-Clayton- Including the cities of Osage, Cresco, Charles City, New Hampton, Oelwein, and Elkader 247 PM CST Thu Feb 4 2021 ...WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Heavy snow. Additional snow accumulations of up to two inches. Winds gusting as high as 40 mph. * WHERE...Portions of north central and northeast Iowa. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions will impact this evening's commute. * ADDITIONAL DETAILS...Drifting snow has lead to numerous accidents in the area. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Iowa can be found at 511.org. && $$ WIZ017-029-050500- /O.CON.KARX.WS.W.0003.000000T0000Z-210205T1200Z/ Taylor-Clark- Including the cities of Medford and Neillsville 247 PM CST Thu Feb 4 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Snow. Accumulations of 5 to 7 inches. Winds gusting as high as 35 mph. These winds will result in some blowing and drifting snow. * WHERE...Taylor and Clark Counties. * WHEN...Until 6 AM CST Friday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The hazardous conditions will impact this evening's commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Wisconsin can be found at 511wi.gov. && $$ IAZ010-MNZ086-087-094-095-WIZ061-050500- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Winneshiek-Dodge-Olmsted-Mower-Fillmore-Grant- Including the cities of Decorah, Dodge Center, Rochester, Austin, Preston, and Platteville 247 PM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Snow ending. Winds gusting as high as 35 mph. These winds will result in some blowing and drifting snow. * WHERE...Portions of southwest Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions will impact this evening's commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. && $$ IAZ011-MNZ079-088-096-WIZ032>034-041>044-053>055-050500- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Allamakee-Wabasha-Winona-Houston-Buffalo-Trempealeau-Jackson- La Crosse-Monroe-Juneau-Adams-Vernon-Crawford-Richland- Including the cities of Waukon, Wabasha, Winona, Caledonia, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 247 PM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Snow ending. Accumulations of 3 to 6 inches. Winds gusting as high as 35 mph. These winds will result in some blowing and drifting snow. * WHERE...Portions of central, southwest and west central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions will impact this evening's commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. && $$ Shea
014 WWUS43 KARX 050023 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 623 PM CST Thu Feb 4 2021 ...Strong Winds, Blowing Snow Continue as Snow Exits... .Snow continues to diminish from the west, with additional accumulations across central into north-central Wisconsin expected to be mainly under an inch. Northwest winds will continue to gust up to 30 to 40 mph, resulting in areas of blowing and drifting snow in open areas with significant visibility reductions. Many roads remain snow-covered and slippery, so use extra caution if traveling this evening and tonight. IAZ008-009-018-019-029-030-050600- /O.CON.KARX.WS.W.0003.000000T0000Z-210205T0600Z/ Mitchell-Howard-Floyd-Chickasaw-Fayette-Clayton- Including the cities of Osage, Cresco, Charles City, New Hampton, Oelwein, and Elkader 623 PM CST Thu Feb 4 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Areas of blowing snow. Winds gusting as high as 40 mph. * WHERE...Portions of north central and northeast Iowa. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WIZ017-029-050830- /O.CON.KARX.WS.W.0003.000000T0000Z-210205T1200Z/ Taylor-Clark- Including the cities of Medford and Neillsville 623 PM CST Thu Feb 4 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Heavy snow. Additional snow accumulations of up to one inch. Winds gusting as high as 35 mph. * WHERE...Taylor and Clark Counties. * WHEN...Until 6 AM CST Friday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ010-MNZ086-087-094-095-WIZ061-050600- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Winneshiek-Dodge-Olmsted-Mower-Fillmore-Grant- Including the cities of Decorah, Dodge Center, Rochester, Austin, Preston, and Platteville 623 PM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Areas of blowing snow. Winds gusting as high as 40 mph. * WHERE...Portions of southwest Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling, especially in open areas. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ011-MNZ079-088-096-WIZ032>034-041>044-053>055-050600- /O.CON.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Allamakee-Wabasha-Winona-Houston-Buffalo-Trempealeau-Jackson- La Crosse-Monroe-Juneau-Adams-Vernon-Crawford-Richland- Including the cities of Waukon, Wabasha, Winona, Caledonia, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 623 PM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Areas of blowing snow and light snow. Additional snow accumulations of up to one inch. Winds gusting as high as 40 mph. * WHERE...Portions of central, southwest and west central Wisconsin, northeast Iowa and southeast Minnesota. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
491 WWUS43 KARX 050552 WSWARX URGENT - WINTER WEATHER MESSAGE National Weather Service La Crosse WI 1152 PM CST Thu Feb 4 2021 IAZ008-009-018-019-029-030-050700- /O.CAN.KARX.WS.W.0003.000000T0000Z-210205T0600Z/ Mitchell-Howard-Floyd-Chickasaw-Fayette-Clayton- Including the cities of Osage, Cresco, Charles City, New Hampton, Oelwein, and Elkader 1152 PM CST Thu Feb 4 2021 ...WINTER STORM WARNING IS CANCELLED... Significant impacts from the snow and blowing snow have ended. As a result, the Winter Storm Warning is cancelled. Roads may remain slick with patchy drifting and blowing snow overnight. $$ WIZ017-029-050700- /O.CAN.KARX.WS.W.0003.000000T0000Z-210205T1200Z/ Taylor-Clark- Including the cities of Medford and Neillsville 1152 PM CST Thu Feb 4 2021 ...WINTER STORM WARNING IS CANCELLED... Significant impacts from the snow and blowing snow have ended. As a result, the Winter Storm Warning is cancelled. Roads may remain slick with patchy drifting and blowing snow overnight. $$ IAZ010-MNZ086-087-094-095-WIZ061-050700- /O.EXP.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Winneshiek-Dodge-Olmsted-Mower-Fillmore-Grant- Including the cities of Decorah, Dodge Center, Rochester, Austin, Preston, and Platteville 1152 PM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT MIDNIGHT CST TONIGHT... Significant impacts from the snow and blowing snow have ended. As a result, the Winter Weather Advisory is cancelled. Roads may remain slick with patchy drifting and blowing snow overnight. $$ IAZ011-MNZ079-088-096-WIZ032>034-041>044-053>055-050700- /O.EXP.KARX.WW.Y.0006.000000T0000Z-210205T0600Z/ Allamakee-Wabasha-Winona-Houston-Buffalo-Trempealeau-Jackson- La Crosse-Monroe-Juneau-Adams-Vernon-Crawford-Richland- Including the cities of Waukon, Wabasha, Winona, Caledonia, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, Viroqua, Prairie Du Chien, and Richland Center 1152 PM CST Thu Feb 4 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT MIDNIGHT CST TONIGHT... Significant impacts from the snow and blowing snow have ended. As a result, the Winter Weather Advisory is cancelled. Roads may remain slick with patchy drifting and blowing snow overnight. $$
What forecasters said that day
The local office's own words before this winter weather 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 winter weather advisory went out at Feb 3, 12:15 PM CST, 1 hour 38 minutes earlier.
Area forecast discussion, Feb 3, 12:15 PM CST, 1 hour 38 minutes before
Area Forecast Discussion
National Weather Service La Crosse WI
1215 PM CST Wed Feb 3 2021
.SHORT TERM...(Today)
Issued at 337 AM CST Wed Feb 3 2021
Monitoring fog and low cloud development overnight with the moist
airmass trapped below the inversion west of the surface ridge
axis. So far, fog is behaving but cannot rule out dense fog areas
from southwest WI into southern MN late tonight.
As pressures fall over the High Plains and Dakotas, the pressure
gradient will ramp up the southerly flow today with the low cloud
over MN/IA likely shifting into/across the western forecast area.
There will likely be a cloud edge through the forecast area with
WI seeing more sun. Winds will really ramp up with model guidance
suggesting 40-50kts at 925 mb by evening. Model soundings keep a
very shallow mixed layer near the surface which should allow gusts
in the 20-30 mph range after dark, strongest from 21-06Z and in
MN/IA.
Clouds will then be on the increase ahead of the storm with an
initial shortwave shifting across northwest/northcentral WI after
midnight with abundant warm advection in the low-levels. This will
like generate an initial band of precipitation quickly shifting
northeast through the late night and it looks like a snow or a
wintry mix as a minor elevated warm layer will exist.
.LONG TERM...(Tonight through Tuesday)
Issued at 337 AM CST Wed Feb 3 2021
In the big picture, not a whole lot of change with the upcoming
winter storm. Water vapor satellite imagery indicates the lead
short wave trough has ejected out of the main system and was
starting to work up the back side of the upper level ridge axis
over the Idaho panhandle and western Montana. The rest of the
system just off the Washington coast will swing inland today and
the two short wave troughs will work across the region in the
mean long wave trough Thursday. Ample forcing continues to be
available for precipitation production with moderate pv advection
in the 500-300 mb layer, moderate to strong mid-level
frontogenesis and some jet dynamics from the the left exit region
of the 300 mb jet. What remains difficult to pin down are the
precipitation types, amounts, wind speeds and the amount of
blowing snow that may occur.
Forecast soundings and precipitation type output from various
ensembles continue to support the idea of a wintry mix to possibly
all rain occurring with the leading edge of the precipitation
late tonight into early Thursday morning. Forecast soundings
suggest the warm nose aloft will max out between 3 and 5C this
evening and then start to cool, but likely still be warm enough to
support partial to complete melting when the precipitation
starts. Then there is also the concern of whether ice will be
present at the beginning as well. Factoring in these two things,
where surface temperatures are below freezing, a wintry mix of
some snow, sleet and freezing rain can all be expected. While ice
accumulations are not expected to be that much, there could be
enough to produce a glaze on untreated surfaces. For some of the
southern sections of the area, temperatures may get into the 33-35
range with just rain expected. As the cold front goes through
Thursday morning, it looks like the warm nose gets wiped out
pretty fast and ice in the clouds is no longer a concern for
primarily snow to fall for much of Thursday into Thursday evening.
That leads into the next issue of qpf and snow amounts. The 02.12Z
NAEFS continues to suggest that precipitable water amounts will
be anomalously high running just over 2 standard deviations above
normal. With the ample forcing to work on this moisture, the super
ensemble mean (minus the CMC which looks too low) looks to be in
the neighborhood of 0.5 to 0.6 of an inch, but there are some GEFS
and hi-res members that are at 0.75" or higher. Snow ratios
shouldn't be exceptionally high given the high liquid content, so
with the conversion over to snow, amounts of 3 to 7 or 8 inches is
the current target range. Given that some ensemble members have
higher qpf totals, that translates to some members still
suggesting the high end amounts could be around 9 or 10 inches.
The axis of highest snow totals currently looks to be roughly from
Fayette and Clayton Counties north into Taylor County. This aligns
well with the frontogenesis band but concerns are that this band
appears to be rather progressive and with a low residence time,
this could keep amounts lower than currently expected. This
concern has some support from the 03.00Z HREF which only shows
some low end probabilities for 1" per hour rates for a short
period Thursday afternoon in the axis where the highest snow
totals are currently forecast.
With the surface low expected to deepen just to the east of the
forecast area, the pressure gradient will rapidly increase with a
resultant increase in the winds Thursday afternoon through the
night. The winds at the top of the mixed layer look to be 40 to 45
knots Thursday afternoon and evening which should result in gusts
of 40 mph or so at the surface. This combined with sustained winds
of 20 to 30 mph presents a potential blowing snow problem for the
open terrain of southeast Minnesota, northeast Iowa into Grant
County. Complicating factors on just how much blowing snow will
occur are possible water logging of the existing snow pack if
temperatures get above freezing and rain occurs tonight, how much
new snow will be available to be blown around and the potential
strength of the winds themselves.
Putting all these factors together led to expanding the winter
storm watch to the entire area. While some locations are not
expected to get enough snow to verify a winter storm warning per
se, when the wind is factored in and the impacts from blowing
snow, a lower criteria for snow amounts may need to be used for
warning headline decisions. In the axis of strongest winds,
concerned that blizzard conditions could occur and used this as
justification for the watch for southeast Minnesota, northeast
Iowa and far southwest Wisconsin.
Oh yeah, it still looks cold for this weekend as well. Below zero
low temperatures will likely occur from Friday night through
Monday night. With limited recovery during the days, below zero
highs should be expected for much of the area Sunday and across
the north Monday. An extended period of wind chill advisories will
likely be needed during this cold snap.
&&
.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
Issued at 1214 PM CST Wed Feb 3 2021
VFR conditions are expected through the afternoon, but clouds will
be increasing today into this evening ahead of the incoming winter
system. MVFR ceilings move in prior to the precipitation. But not
shortly after, IFR visibilities and ceilings arrive with the
precipitation, which will likely start out as a wintry mix.
Depending on surface temperatures, KRST may see more freezing rain
and sleet at the onset, while KLSE may have more of a rain and
snow mix. This wintry mix may only last for a brief hour or two
before fully changing over to snow later tomorrow morning, then
LIFR visibilities become more likely.
Today, winds from the south could gust up to 30 knots at KRST and
up to 20 knots at KLSE this afternoon. Tonight, winds above the
surface increase from the south introducing a threat for low-level
wind shear. Depending on how well surface winds can decouple
after 00z, speeds around 45 to 50 knots from 1500 to 2000 ft AGL
from the south are likely for a few hours tonight. This threat
diminishes as an arctic cold front approaches the region from the
northwest. Then the surface winds become more northwesterly by
late tomorrow morning.
Looking ahead, wind gusts then increase Thursday afternoon around 30
knots. While the snow will be ending from west to east, reduced
visibilities are still possible with blowing and drifting snow
conditions.
&&
.ARX WATCHES/WARNINGS/ADVISORIES...
WI...Winter Storm Watch from Thursday morning through late Thursday
night for WIZ032-033-041-053>055-061.
Winter Storm Watch from late tonight through late Thursday night
for WIZ017-029-034-042>044.
MN...Winter Storm Watch from Thursday morning through late Thursday
night for MNZ079-086>088-094>096.
IA...Winter Storm Watch from Thursday morning through late Thursday
night for IAZ008>011-018-019-029-030.
&&
SHORT TERM...Baumgardt
LONG TERM...04
AVIATION...PetersHazardous weather outlook, Feb 3, 5:37 AM CST, 8 hours 16 minutes before
Hazardous Weather Outlook National Weather Service La Crosse WI 537 AM CST Wed Feb 3 2021 WIZ017-029-034-042>044-041200- Taylor-Clark-Jackson-Monroe-Juneau-Adams- 537 AM CST Wed Feb 3 2021 This Hazardous Weather Outlook is for portions of central Wisconsin...north central Wisconsin and west central Wisconsin. .DAY ONE...Today and Tonight A wintry mix of snow, sleet and freezing rain will move in late tonight. Minor snow accumulations will be possible along with a glaze of ice on untreated surfaces. A Winter Storm Watch is in effect for late tonight. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday The Winter Storm Watch remains in effect for Thursday and Thursday night. The wintry mix will change over to all snow Thursday morning with the snow continuing into Thursday evening. The period of heaviest snow is expected Thursday afternoon. Storm totals of 4 to 8 inches will be possible. Winds will gust as high as 35 mph Thursday afternoon and night with blowing and drifting snow expected. Bitterly cold air will spread over the area with the period of coldest temperatures expected from Friday night into Monday. Wind chill advisories will be needed during this period. .SPOTTER INFORMATION STATEMENT... Precipitation/snowfall reports would be appreciated. .EMERGENCY MANAGEMENT COORDINATION... A webinar is scheduled for 230 pm today. MNZ079-088-096-WIZ032-033-041-053>055-041200- Wabasha-Winona-Houston-Buffalo-Trempealeau-La Crosse-Vernon- Crawford-Richland- 537 AM CST Wed Feb 3 2021 This Hazardous Weather Outlook is for portions of southeast Minnesota...southwest Wisconsin and west central Wisconsin. .DAY ONE...Today and Tonight A wintry mix of snow, sleet, freezing rain or rain will move in late tonight. A glaze of ice will be possible on untreated surfaces. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday A Winter Storm Watch is in effect for Thursday and Thursday night. The wintry mix will change over to all snow Thursday morning with the snow continuing into Thursday evening. The period of heaviest snow is expected Thursday afternoon. Storm totals of 3 to 7 inches will be possible. Winds will gust as high as 40 mph Thursday afternoon and night with blowing and drifting snow expected. Bitterly cold air will spread over the area with the period of coldest temperatures expected from Friday night into Monday. Wind chill advisories will be needed during this period. .SPOTTER INFORMATION STATEMENT... Precipitation/snowfall reports would be appreciated. .EMERGENCY MANAGEMENT COORDINATION... A webinar is scheduled for 230 pm today. IAZ008>011-018-019-029-030-MNZ086-087-094-095-WIZ061-041200- Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Dodge-Olmsted-Mower-Fillmore-Grant- 537 AM CST Wed Feb 3 2021 This Hazardous Weather Outlook is for portions of north central Iowa...northeast Iowa...southeast Minnesota and southwest Wisconsin. .DAY ONE...Today and Tonight A wintry mix of rain, snow, sleet or freezing rain will move in late tonight. A glaze of ice will be possible on untreated surfaces. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday A Winter Storm Watch is in effect for Thursday and Thursday night. The wintry mix will change over to all snow Thursday morning with the snow continuing into Thursday evening. The period of heaviest snow is expected Thursday afternoon. Storm totals of 2 to 6 inches will be possible. Winds will gust as high as 40 mph Thursday afternoon and night creating blowing and drifting snow with blizzard conditions possible. Bitterly cold air will spread over the area with the period of coldest temperatures expected from Friday night into Monday. Wind chill advisories will be needed during this period. .SPOTTER INFORMATION STATEMENT... Precipitation/snowfall reports would be appreciated. .EMERGENCY MANAGEMENT COORDINATION... A webinar is scheduled for 230 pm today. 04
Nearby
Winter Weather Advisories in Wisconsin, 2021Winter Weather Advisories in Iowa, 2021Winter Weather Advisories in Minnesota, 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.