Alert archive / Wisconsin / Frost Advisories in 2021
Frost Advisory 4, NWS La Crosse, WI
NWS La Crosse, WI issued this frost advisory at May 9, 2021, 2:40 PM CDT for 4 counties in Wisconsin. It took effect at May 10, 2021, 12:00 AM CDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- May 9, 2021, 2:40 PM CDT (19:40 UTC)
- In effect from
- May 10, 2021, 12:00 AM CDT
- Expired
- May 10, 2021, 8:00 AM CDT
- In force
- 8 hr
- Issued by
- NWS La Crosse, WI
Counties Adams County, WI, Jackson County, WI, Juneau County, WI, Monroe County, WI
The radar
The La Crosse radar (KARX), 73 km from the middle of the area, began a volume at 19:42 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.7 hours before the alert went out and 184 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
- 1852 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- -47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
070 WWUS73 KARX 091940 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 240 PM CDT Sun May 9 2021 WIZ017-029-100345- /O.NEW.KARX.FZ.W.0002.210510T0500Z-210510T1300Z/ Taylor-Clark- Including the cities of Medford and Neillsville 240 PM CDT Sun May 9 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CDT MONDAY... * WHAT...Sub-freezing temperatures as low as 26 expected. * WHERE...Taylor and Clark Counties. * WHEN...From midnight tonight to 8 AM CDT Monday. * IMPACTS...Freeze conditions 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. && $$ WIZ034-042>044-100345- /O.NEW.KARX.FR.Y.0004.210510T0500Z-210510T1300Z/ Jackson-Monroe-Juneau-Adams- Including the cities of Black River Falls, Sparta, Tomah, Mauston, and Friendship 240 PM CDT Sun May 9 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CDT MONDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Jackson, Monroe, Juneau and Adams Counties. * WHEN...From midnight tonight to 8 AM CDT Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Boyne
2 follow-up statements
622 WWUS73 KARX 100301 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 1001 PM CDT Sun May 9 2021 WIZ017-029-101115- /O.CON.KARX.FZ.W.0002.210510T0500Z-210510T1300Z/ Taylor-Clark- Including the cities of Medford and Neillsville 1001 PM CDT Sun May 9 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT MONDAY... * WHAT...Sub-freezing temperatures as low as 26 expected. * WHERE...Clark and Taylor Counties. * WHEN...Until 8 AM CDT Monday. * IMPACTS...Freeze conditions 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. && $$ WIZ034-042>044-101115- /O.CON.KARX.FR.Y.0004.210510T0500Z-210510T1300Z/ Jackson-Monroe-Juneau-Adams- Including the cities of Black River Falls, Sparta, Tomah, Mauston, and Friendship 1001 PM CDT Sun May 9 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT MONDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Monroe, Juneau, Adams and Jackson Counties. * WHEN...Until 8 AM CDT Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Boyne
299 WWUS73 KARX 101252 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 752 AM CDT Mon May 10 2021 WIZ017-029-101400- /O.EXP.KARX.FZ.W.0002.000000T0000Z-210510T1300Z/ Taylor-Clark- Including the cities of Medford and Neillsville 752 AM CDT Mon May 10 2021 ...FREEZE WARNING WILL EXPIRE AT 8 AM CDT THIS MORNING... Temperatures have warmed into the mid 30s. Therefore, the freeze warning has been allowed to expire. $$ WIZ034-042>044-101400- /O.EXP.KARX.FR.Y.0004.000000T0000Z-210510T1300Z/ Jackson-Monroe-Juneau-Adams- Including the cities of Black River Falls, Sparta, Tomah, Mauston, and Friendship 752 AM CDT Mon May 10 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING... Temperatures have warmed into the upper 30s and lower 40s, Therefore, the frost advisory has been allowed to expire. $$ Zapotocny
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 2:40 PM CDT | Freeze Warning | ARX | Clark, Taylor | 17 hr |
Nearby
Frost 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.