Alert archive / Wisconsin / Frost Advisories in 2021
Frost Advisory 13, NWS Green Bay, WI
NWS Green Bay, WI issued this frost advisory at Oct 16, 2021, 1:34 PM CDT for 4 counties in Wisconsin. It took effect at Oct 17, 2021, 2:00 AM CDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Oct 16, 2021, 1:34 PM CDT (18:34 UTC)
- In effect from
- Oct 17, 2021, 2:00 AM CDT
- Expired
- Oct 17, 2021, 8:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Green Bay, WI
Counties Langlade County, WI, Marathon County, WI, Portage County, WI, Wood County, WI
The radar
The Green Bay radar (KGRB), 121 km from the middle of the area, began a volume at 18:35 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 123 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
- 945 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
819 WWUS73 KGRB 161834 NPWGRB URGENT - WEATHER MESSAGE National Weather Service Green Bay WI 134 PM CDT Sat Oct 16 2021 WIZ030-035-036-170245- /O.NEW.KGRB.FR.Y.0013.211017T0700Z-211017T1300Z/ Marathon-Wood-Portage- Including the cities of Wausau, Wisconsin Rapids, Plover, Marshfield, and Stevens Point 134 PM CDT Sat Oct 16 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM CDT SUNDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Marathon, Portage and Wood Counties. * WHEN...From 2 AM to 8 AM CDT Sunday. * 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. && $$ For more information, visit us at http://www.weather.gov/GreenBay Eckberg
2 follow-up statements
527 WWUS73 KGRB 170229 NPWGRB URGENT - WEATHER MESSAGE National Weather Service Green Bay WI 929 PM CDT Sat Oct 16 2021 WIZ019-171030- /O.EXA.KGRB.FR.Y.0013.211017T0700Z-211017T1300Z/ Langlade- Including the cities of Antigo 929 PM CDT Sat Oct 16 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM CDT SUNDAY... * WHAT...Temperatures falling into the low to mid 30s will result in frost formation. * WHERE...Langlade County. * WHEN...From 2 AM to 8 AM CDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WIZ030-035-036-171030- /O.CON.KGRB.FR.Y.0013.211017T0700Z-211017T1300Z/ Marathon-Wood-Portage- Including the cities of Wausau, Wisconsin Rapids, Plover, Marshfield, and Stevens Point 929 PM CDT Sat Oct 16 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM CDT SUNDAY... * WHAT...Temperatures falling into the low to mid 30s will result in frost formation. * WHERE...Marathon, Portage and Wood Counties. * WHEN...From 2 AM to 8 AM CDT Sunday. * 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. && $$ For more information, visit us at http://www.weather.gov/GreenBay Cooley
642 WWUS73 KGRB 171020 NPWGRB URGENT - WEATHER MESSAGE National Weather Service Green Bay WI 520 AM CDT Sun Oct 17 2021 WIZ019-030-035-036-171300- /O.CON.KGRB.FR.Y.0013.000000T0000Z-211017T1300Z/ Langlade-Marathon-Wood-Portage- Including the cities of Antigo, Wausau, Marshfield, Wisconsin Rapids, Stevens Point, and Plover 520 AM CDT Sun Oct 17 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Marathon, Langlade, Wood and Portage Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 15, 9:11 PM CDT | Small Craft Advisory | GRB | 25 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.