Alert archive / Iowa / Frost Advisories in 2021
Frost Advisory 5, NWS La Crosse, WI
NWS La Crosse, WI issued this frost advisory at May 10, 2021, 1:52 PM CDT for 6 counties in Wisconsin; 8 counties in Iowa; 7 counties in Minnesota. It took effect at May 10, 2021, 11:00 PM CDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- May 10, 2021, 1:52 PM CDT (18:52 UTC)
- In effect from
- May 10, 2021, 11:00 PM CDT
- Expired
- May 11, 2021, 8:00 AM CDT
- In force
- 9 hr
- Issued by
- NWS La Crosse, WI
All 21 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, Buffalo County, WI, Crawford County, WI, Grant County, WI, La Crosse County, WI, Richland County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 60 km from the middle of the area, began a volume at 18:52 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, 6.9 hours before the alert went out and 206 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
- 1672 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
907 WWUS73 KARX 101852 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 152 PM CDT Mon May 10 2021 WIZ017-029-033-034-042>044-110300- /O.NEW.KARX.FZ.W.0003.210511T0400Z-210511T1300Z/ Taylor-Clark-Trempealeau-Jackson-Monroe-Juneau-Adams- Including the cities of Medford, Neillsville, Arcadia, Whitehall, Black River Falls, Sparta, Tomah, Mauston, and Friendship 152 PM CDT Mon May 10 2021 ...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 8 AM CDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 24 to 27 expected. * WHERE...Taylor, Clark, Trempealeau, Jackson, Monroe, Juneau and Adams Counties. * WHEN...From 11 PM this evening to 8 AM CDT Tuesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032-041- 053>055-061-110300- /O.NEW.KARX.FR.Y.0005.210511T0400Z-210511T1300Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston- Buffalo-La Crosse-Vernon-Crawford-Richland-Grant- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Oelwein, Elkader, Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Alma, La Crosse, Viroqua, Prairie Du Chien, Richland Center, and Platteville 152 PM CDT Mon May 10 2021 ...FROST ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 8 AM CDT TUESDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of southwest and west central Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...From 11 PM this evening to 8 AM CDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Zapotocny
2 follow-up statements
090 WWUS73 KARX 110244 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 944 PM CDT Mon May 10 2021 WIZ017-029-033-034-042>044-111300- /O.CON.KARX.FZ.W.0003.210511T0400Z-210511T1300Z/ Taylor-Clark-Trempealeau-Jackson-Monroe-Juneau-Adams- Including the cities of Medford, Neillsville, Arcadia, Whitehall, Black River Falls, Sparta, Tomah, Mauston, and Friendship 944 PM CDT Mon May 10 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 24 to 27 expected. * WHERE...Monroe, Juneau, Adams, Trempealeau, Jackson, Taylor and Clark Counties. * WHEN...Until 8 AM CDT Tuesday. * IMPACTS...Sub-freezing temperatures will kill crops and unprotected sensitive vegetation, and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032-041- 053>055-061-111300- /O.CON.KARX.FR.Y.0005.210511T0400Z-210511T1300Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston- Buffalo-La Crosse-Vernon-Crawford-Richland-Grant- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Oelwein, Elkader, Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Alma, La Crosse, Viroqua, Prairie Du Chien, Richland Center, and Platteville 944 PM CDT Mon May 10 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT TUESDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of southwest and west central Wisconsin, north central and northeast Iowa and southeast Minnesota. * WHEN...Until 8 AM CDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Boyne
672 WWUS73 KARX 111309 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 809 AM CDT Tue May 11 2021 WIZ017-029-033-034-042>044-111415- /O.EXP.KARX.FZ.W.0003.000000T0000Z-210511T1300Z/ Taylor-Clark-Trempealeau-Jackson-Monroe-Juneau-Adams- Including the cities of Medford, Neillsville, Arcadia, Whitehall, Black River Falls, Sparta, Tomah, Mauston, and Friendship 809 AM CDT Tue May 11 2021 ...FREEZE WARNING HAS EXPIRED... Temperatures have warmed into the mid and upper 30s. Therefore, the freeze warning has been allowed to expire. $$ IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032-041- 053>055-061-111415- /O.EXP.KARX.FR.Y.0005.000000T0000Z-210511T1300Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston- Buffalo-La Crosse-Vernon-Crawford-Richland-Grant- Including the cities of Osage, Cresco, Decorah, Waukon, Charles City, New Hampton, Oelwein, Elkader, Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Alma, La Crosse, Viroqua, Prairie Du Chien, Richland Center, and Platteville 809 AM CDT Tue May 11 2021 ...FROST ADVISORY HAS EXPIRED... Temperatures have warmed into the mid 30s to the lower 40s. Therefore, the frost advisory has been allowed to expire. $$ Zapotocny
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 1:52 PM CDT | Freeze Warning | ARX | Adams, Clark, Jackson, Juneau, Monroe, Taylor and 1 more | 18 hr |
Nearby
Frost Advisories in Iowa, 2021Frost Advisories in Minnesota, 2021Frost Advisories in Wisconsin, 2021Every frost 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.