Alert archive / Wisconsin / Frost Advisories in 2021
Frost Advisory 7, NWS La Crosse, WI
NWS La Crosse, WI issued this frost advisory at May 12, 2021, 1:36 PM CDT for 6 counties in Wisconsin. It took effect at May 13, 2021, 12:00 AM CDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- May 12, 2021, 1:36 PM CDT (18:36 UTC)
- In effect from
- May 13, 2021, 12:00 AM CDT
- Expired
- May 13, 2021, 7:30 AM CDT
- In force
- 8 hr
- Issued by
- NWS La Crosse, WI
Counties Adams County, WI, Clark County, WI, Jackson County, WI, Juneau County, WI, Monroe County, WI, Taylor County, WI
The radar
The La Crosse radar (KARX), 86 km from the middle of the area, began a volume at 18:41 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, 6.6 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
- 1721 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
000 WWUS73 KARX 121836 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 136 PM CDT Wed May 12 2021 WIZ017-029-034-042>044-130245- /O.NEW.KARX.FR.Y.0007.210513T0500Z-210513T1300Z/ Taylor-Clark-Jackson-Monroe-Juneau-Adams- Including the cities of Medford, Neillsville, Black River Falls, Sparta, Tomah, Mauston, and Friendship 136 PM CDT Wed May 12 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CDT THURSDAY... * WHAT...Temperatures as low as 30 to 35 will result in frost formation. * WHERE...Taylor, Clark, Jackson, Monroe, Juneau and Adams Counties. * WHEN...From midnight tonight to 8 AM CDT Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Zapotocny
2 follow-up statements
416 WWUS73 KARX 130211 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 911 PM CDT Wed May 12 2021 WIZ017-029-034-042>044-131300- /O.CON.KARX.FR.Y.0007.210513T0500Z-210513T1300Z/ Taylor-Clark-Jackson-Monroe-Juneau-Adams- Including the cities of Medford, Neillsville, Black River Falls, Sparta, Tomah, Mauston, and Friendship 911 PM CDT Wed May 12 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THURSDAY... * WHAT...Temperatures as low as 30 to 35 will result in frost formation. * WHERE...Monroe, Juneau, Adams, Jackson, Clark and Taylor Counties. * WHEN...Through 8 AM CDT Thursday. * IMPACTS...Frost could damage or kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Boyne
794 WWUS73 KARX 131230 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 730 AM CDT Thu May 13 2021 WIZ017-029-034-042>044-131330- /O.CAN.KARX.FR.Y.0007.000000T0000Z-210513T1300Z/ Taylor-Clark-Jackson-Monroe-Juneau-Adams- Including the cities of Medford, Neillsville, Black River Falls, Sparta, Tomah, Mauston, and Friendship 730 AM CDT Thu May 13 2021 ...FROST ADVISORY IS CANCELLED... Temperatures have warmed into the upper 30s and 40s, therefore, the frost advisory has been cancelled. $$ Zapotocny
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.