Alert archive / Wisconsin / Frost Advisories in 2021
Frost Advisory 3, NWS Green Bay, WI
NWS Green Bay, WI issued this frost advisory at May 9, 2021, 2:41 PM CDT for 11 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, 2:41 PM CDT (19:41 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 Green Bay, WI
Counties Brown County, WI, Calumet County, WI, Door County, WI, Kewaunee County, WI, Manitowoc County, WI, Outagamie County, WI, Portage County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI
The radar
The Green Bay radar (KGRB), 35 km from the middle of the area, began a volume at 19:41 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, 7.7 hours before the alert went out and 35 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.
906 WWUS73 KGRB 091941 NPWGRB URGENT - WEATHER MESSAGE National Weather Service Green Bay WI 241 PM CDT Sun May 9 2021 WIZ005-010>013-018>021-030-031-073-074-100345- /O.NEW.KGRB.FZ.W.0003.210510T0500Z-210510T1300Z/ Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln- Langlade-Menominee-Northern Oconto County-Marathon-Shawano- Southern Marinette County-Southern Oconto County- Including the cities of Spread Eagle, Keshena, Mountain, Antigo, Neopit, Harmony, Eagle River, Crivitz, Townsend, Lakewood, Wausau, Lac Du Flambeau, Aurora, Oconto, Little Suamico, Porterfield, Middle Inlet, Loomis, Rhinelander, Tomahawk, Crandon, High Falls Reservoir, Commonwealth, Peshtigo, Merrill, Brookside, Shawano, Sobieski, Niagara, Pensaukee, and Wausaukee 241 PM CDT Sun May 9 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CDT MONDAY... * WHAT...Sub-freezing temperatures and widespread frost. * WHERE...Portions of central, north central, and northeast Wisconsin. * WHEN...From Midnight tonight to 8 AM CDT Monday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive outdoor plants. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WIZ022-035>040-045-048>050-100345- /O.NEW.KGRB.FR.Y.0003.210510T0500Z-210510T1300Z/ Door-Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara- Winnebago-Calumet-Manitowoc- Including the cities of Brillion, New London, Clintonville, Oshkosh, Appleton, Marshfield, Neenah, Manitowoc, Fish Creek, Chilton, Luxemburg, Waupaca, Green Bay, Sturgeon Bay, Redgranite, Plover, Menasha, Two Rivers, Wisconsin Rapids, Stevens Point, New Holstein, Wautoma, Sister Bay, and Kewaunee 241 PM CDT Sun May 9 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CDT MONDAY... * WHAT...Cold temperatures near freezing and widespread frost. * WHERE...Portions of central, east central, and northeast Wisconsin. * WHEN...From Midnight tonight to 8 AM CDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information, visit us at http://www.weather.gov/GreenBay
3 follow-up statements
704 WWUS73 KGRB 100320 NPWGRB URGENT - WEATHER MESSAGE National Weather Service Green Bay WI 1020 PM CDT Sun May 9 2021 WIZ005-010>013-018>021-030-031-073-074-101130- /O.CON.KGRB.FZ.W.0003.210510T0500Z-210510T1300Z/ Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln- Langlade-Menominee-Northern Oconto County-Marathon-Shawano- Southern Marinette County-Southern Oconto County- Including the cities of Spread Eagle, Keshena, Mountain, Antigo, Neopit, Harmony, Eagle River, Crivitz, Townsend, Lakewood, Wausau, Lac Du Flambeau, Aurora, Oconto, Little Suamico, Porterfield, Middle Inlet, Loomis, Rhinelander, Tomahawk, Crandon, High Falls Reservoir, Commonwealth, Peshtigo, Merrill, Brookside, Shawano, Sobieski, Niagara, Pensaukee, and Wausaukee 1020 PM CDT Sun May 9 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT MONDAY... * WHAT...Sub-freezing temperatures from 25 to 32 are expected. The coldest temperatures will be in the Northwoods region. * WHERE...Portions of central, north central, and northeast Wisconsin. * WHEN...Until 8 AM CDT Monday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WIZ022-035>040-045-048>050-101130- /O.CON.KGRB.FR.Y.0003.210510T0500Z-210510T1300Z/ Door-Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara- Winnebago-Calumet-Manitowoc- Including the cities of Brillion, New London, Clintonville, Oshkosh, Appleton, Marshfield, Neenah, Manitowoc, Fish Creek, Chilton, Luxemburg, Waupaca, Green Bay, Sturgeon Bay, Redgranite, Plover, Menasha, Two Rivers, Wisconsin Rapids, Stevens Point, New Holstein, Wautoma, Sister Bay, and Kewaunee 1020 PM CDT Sun May 9 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT MONDAY... * WHAT...Temperatures of 32 to 36 will result in frost formation. * WHERE...Portions of central, east central, and northeast Wisconsin. * WHEN...Until 8 AM CDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information, visit us at http://www.weather.gov/GreenBay RDM
106 WWUS73 KGRB 100902 NPWGRB URGENT - WEATHER MESSAGE National Weather Service Green Bay WI 402 AM CDT Mon May 10 2021 WIZ037>040-045-048>050-101015- /O.CAN.KGRB.FR.Y.0003.000000T0000Z-210510T1300Z/ Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-Calumet- Manitowoc- Including the cities of New London, Waupaca, Clintonville, Appleton, Green Bay, Kewaunee, Luxemburg, Redgranite, Wautoma, Oshkosh, Neenah, Menasha, Chilton, Brillion, New Holstein, Manitowoc, and Two Rivers 402 AM CDT Mon May 10 2021 ...FROST ADVISORY IS CANCELLED... Lingering clouds and scattered sprinkles and showers make frost formation unlikely this morning. As a result, the Frost Advisory has been cancelled. The potential for frost and even some freezing temperatures will be much greater tonight. Be sure to monitor later forecasts today for the likely issuance of a Frost Advisory or Freeze Warning. $$ WIZ005-010>013-018>021-073-101300- /O.CON.KGRB.FZ.W.0003.000000T0000Z-210510T1300Z/ Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln- Langlade-Menominee-Northern Oconto County- Southern Marinette County- Including the cities of Eagle River, Lac Du Flambeau, Rhinelander, Crandon, Aurora, Commonwealth, Spread Eagle, Niagara, Wausaukee, Merrill, Tomahawk, Antigo, Keshena, Neopit, Mountain, Lakewood, Townsend, Harmony, Peshtigo, Porterfield, Crivitz, High Falls Reservoir, Loomis, and Middle Inlet 402 AM CDT Mon May 10 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Sub-freezing temperatures and widespread frost. * WHERE...Langlade, Lincoln, Northern Marinette County, Florence, Forest, Oneida, Southern Marinette County, Menominee, Northern Oconto County and Vilas Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Frost and freezing temperatures could severely injure or kill cold-sensitive plants. * ADDITIONAL DETAILS...Cold temperatures are expected again tonight, leading to another round of frost and freezing conditions. Be sure to monitor later forecasts for the issuance of a Frost Advisory or Freeze Warning for tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Tender plants should not be uncovered or placed back outside until late morning. Plan on protecting them again to night to ensure their survival. && $$ WIZ030-031-074-101300- /O.CON.KGRB.FZ.W.0003.000000T0000Z-210510T1300Z/ Marathon-Shawano-Southern Oconto County- Including the cities of Wausau, Shawano, Little Suamico, Sobieski, Brookside, Oconto, and Pensaukee 402 AM CDT Mon May 10 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Temperatures near freezing possible. * WHERE...Shawano, Marathon and Southern Oconto County Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Cold temperatures could injure cold-sensitive plants. * ADDITIONAL DETAILS...Clouds limited the temperature drop overnight. Although widespread freezing conditions are now unlikely, temperatures may still drop close to freezing at a few locations around daybreak. The potential for freezing temperatures and frost will be much greater tonight. Be sure to monitor later forecasts for the issuance of a Frost Advisory or Freeze Warning for tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Tender plants should not be uncovered or placed back outside until late morning. Plan on protecting them again to night to ensure their survival. && $$ WIZ035-036-101300- /O.CON.KGRB.FR.Y.0003.000000T0000Z-210510T1300Z/ Wood-Portage- Including the cities of Marshfield, Wisconsin Rapids, Stevens Point, and Plover 402 AM CDT Mon May 10 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Temperatures may still be cold enough to allow for patchy frost formation. * WHERE...Wood and Portage Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Frost could injure cold-sensitive plants. * ADDITIONAL DETAILS...Clouds limited the temperature drop overnight. Although widespread frost is now unlikely, patchy frost could still develop by daybreak. The potential for freezing temperatures and frost will be much greater tonight. Be sure to monitor later forecasts for the issuance of a Frost Advisory or Freeze Warning for tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Tender plants should not be uncovered or placed back outside until late morning. Plan on protecting them again to night to ensure their survival. && $$ WIZ022-101300- /O.CON.KGRB.FR.Y.0003.000000T0000Z-210510T1300Z/ Door- Including the cities of Sturgeon Bay, Fish Creek, and Sister Bay 402 AM CDT Mon May 10 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Temperatures may still be cold enough to allow for patchy frost formation. * WHERE...Door County, mainly north of Sturgeon Bay. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Frost could injure cold-sensitive plants. * ADDITIONAL DETAILS...Clouds and wind limited the temperature drop overnight. Although a widespread frost is now unlikely, temperatures may still drop close to freezing at a few locations around daybreak. The potential for freezing temperatures and frost will be much greater tonight. Be sure to monitor later forecasts for the issuance of a Frost Advisory or Freeze Warning for tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Tender plants should not be uncovered or placed back outside until late morning. Plan on protecting them again to night to ensure their survival. && $$ Skowronski
519 WWUS73 KGRB 101244 NPWGRB URGENT - WEATHER MESSAGE National Weather Service Green Bay WI 744 AM CDT Mon May 10 2021 WIZ005-010>013-018>021-073-101345- /O.EXP.KGRB.FZ.W.0003.000000T0000Z-210510T1300Z/ Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln- Langlade-Menominee-Northern Oconto County- Southern Marinette County- Including the cities of Eagle River, Lac Du Flambeau, Rhinelander, Crandon, Aurora, Commonwealth, Spread Eagle, Niagara, Wausaukee, Merrill, Tomahawk, Antigo, Keshena, Neopit, Mountain, Lakewood, Townsend, Harmony, Peshtigo, Porterfield, Crivitz, High Falls Reservoir, Loomis, and Middle Inlet 744 AM CDT Mon May 10 2021 ...FREEZE WARNING WILL EXPIRE AT 8 AM CDT THIS MORNING... Freezing temperatures are likely again tonight. Be sure to monitor later forecasts today for the likely issuance of a Frost Advisory or Freeze Warning. $$ WIZ030-031-074-101345- /O.EXP.KGRB.FZ.W.0003.000000T0000Z-210510T1300Z/ Marathon-Shawano-Southern Oconto County- Including the cities of Wausau, Shawano, Little Suamico, Sobieski, Brookside, Oconto, and Pensaukee 744 AM CDT Mon May 10 2021 ...FREEZE WARNING WILL EXPIRE AT 8 AM CDT THIS MORNING... Freezing temperatures are likely tonight. Be sure to monitor later forecasts today for the likely issuance of a Frost Advisory or Freeze Warning. $$ WIZ035-036-101345- /O.EXP.KGRB.FR.Y.0003.000000T0000Z-210510T1300Z/ Wood-Portage- Including the cities of Marshfield, Wisconsin Rapids, Stevens Point, and Plover 744 AM CDT Mon May 10 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING... Freezing temperatures and frost are likely again tonight. Be sure to monitor later forecasts today for the likely issuance of a Frost Advisory or Freeze Warning. $$ WIZ022-101345- /O.EXP.KGRB.FR.Y.0003.000000T0000Z-210510T1300Z/ Door- Including the cities of Sturgeon Bay, Fish Creek, and Sister Bay 744 AM CDT Mon May 10 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING... Freezing temperatures and frost are likely again tonight. Be sure to monitor later forecasts today for the likely issuance of a Frost Advisory or Freeze Warning. $$ Skowronski
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 2:41 PM CDT | Freeze Warning | GRB | Florence, Forest, Langlade, Lincoln, Marathon, Marinette and 5 more | 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.