Alert archive / Wisconsin / Frost Advisories in 2021
Frost Advisory 12, NWS Green Bay, WI
NWS Green Bay, WI issued this frost advisory at Sep 22, 2021, 2:12 PM CDT for 9 counties in Wisconsin. It took effect at Sep 23, 2021, 1:00 AM CDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Sep 22, 2021, 2:12 PM CDT (19:12 UTC)
- In effect from
- Sep 23, 2021, 1:00 AM CDT
- Expired
- Sep 23, 2021, 8:00 AM CDT
- In force
- 7 hr
- Issued by
- NWS Green Bay, WI
Counties Florence County, WI, Forest County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Oneida County, WI, Portage County, WI, Vilas County, WI, Wood County, WI
The radar
The Green Bay radar (KGRB), 133 km from the middle of the area, began a volume at 19:14 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, 7.2 hours before the alert went out and 135 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
- 911 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -144 m²/s²
- 0-3 km storm-relative helicity
- -109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
918 WWUS73 KGRB 221912 NPWGRB URGENT - WEATHER MESSAGE National Weather Service Green Bay WI 212 PM CDT Wed Sep 22 2021 WIZ005-010>012-018-019-030-035-036-230315- /O.NEW.KGRB.FR.Y.0012.210923T0600Z-210923T1300Z/ Vilas-Oneida-Forest-Florence-Lincoln-Langlade-Marathon-Wood- Portage- Including the cities of Commonwealth, Spread Eagle, Merrill, Marshfield, Plover, Wausau, Rhinelander, Aurora, Antigo, Wisconsin Rapids, Stevens Point, Crandon, Lac Du Flambeau, Eagle River, and Tomahawk 212 PM CDT Wed Sep 22 2021 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT THURSDAY... * WHAT...Temperatures are expected to range from the low to mid 30s in the coldest locations and will result in frost formation. * WHERE...Marathon, Portage, Wood, Langlade, Lincoln, Oneida, Vilas, Florence and Forest Counties. * WHEN...From 1 AM to 8 AM CDT Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information, visit us at http://www.weather.gov/GreenBay Cooley
2 follow-up statements
323 WWUS73 KGRB 230302 NPWGRB URGENT - WEATHER MESSAGE National Weather Service Green Bay WI 1002 PM CDT Wed Sep 22 2021 WIZ005-010>012-018-019-030-035-036-231300- /O.CON.KGRB.FR.Y.0012.210923T0600Z-210923T1300Z/ Vilas-Oneida-Forest-Florence-Lincoln-Langlade-Marathon-Wood- Portage- Including the cities of Commonwealth, Spread Eagle, Merrill, Marshfield, Plover, Wausau, Rhinelander, Aurora, Antigo, Wisconsin Rapids, Stevens Point, Crandon, Lac Du Flambeau, Eagle River, and Tomahawk 1002 PM CDT Wed Sep 22 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THURSDAY... * WHAT...Temperatures are expected to range from the low to mid 30s in the coldest locations and will result in frost formation. * WHERE...Marathon, Portage, Wood, Langlade, Lincoln, Oneida, Vilas, Florence and Forest Counties. * WHEN...Until 8 AM CDT Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information, visit us at http://www.weather.gov/GreenBay Kurimski
634 WWUS73 KGRB 230857 NPWGRB URGENT - WEATHER MESSAGE National Weather Service Green Bay WI 357 AM CDT Thu Sep 23 2021 WIZ030-035-036-231000- /O.CAN.KGRB.FR.Y.0012.000000T0000Z-210923T1300Z/ Marathon-Wood-Portage- Including the cities of Wausau, Marshfield, Wisconsin Rapids, Stevens Point, and Plover 357 AM CDT Thu Sep 23 2021 ...FROST ADVISORY IS CANCELLED... Light winds continued overnight, keeping temperatures a little warmer than initially anticipated and inhibiting frost formation. As a result, the frost advisory has been cancelled. $$ WIZ005-010>012-018-019-231300- /O.CON.KGRB.FR.Y.0012.000000T0000Z-210923T1300Z/ Vilas-Oneida-Forest-Florence-Lincoln-Langlade- Including the cities of Eagle River, Lac Du Flambeau, Rhinelander, Crandon, Aurora, Commonwealth, Spread Eagle, Merrill, Tomahawk, and Antigo 357 AM CDT Thu Sep 23 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Temperatures in the low to middle 30s will result in areas of frost. * WHERE...Langlade, Lincoln, Vilas, Florence, Forest and Oneida Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Cold-sensitive plants could be damaged if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Wait until mid-morning before removing any covering that was placed over plants to protect them from frost. && $$ JS
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 22, 4:26 AM CDT | Gale Warning | GRB | 32 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.