Alert archive / Minnesota / Frost Advisories in 2020
Frost Advisory 4, NWS Twin Cities, MN
NWS Twin Cities, MN issued this frost advisory at Sep 17, 2020, 11:03 AM CDT for 10 counties in Minnesota; 6 counties in Wisconsin. It took effect at Sep 18, 2020, 1:00 AM CDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Sep 17, 2020, 11:03 AM CDT (16:03 UTC)
- In effect from
- Sep 18, 2020, 1:00 AM CDT
- Expired
- Sep 18, 2020, 8:00 AM CDT
- In force
- 7 hr
- Issued by
- NWS Twin Cities, MN
Counties Anoka County, MN, Benton County, MN, Chisago County, MN, Dakota County, MN, Goodhue County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Washington County, MN, Barron County, WI, Chippewa County, WI, Eau Claire County, WI, Pepin County, WI, Polk County, WI, Rusk County, WI
The radar
The Minneapolis radar (KMPX), 83 km from the middle of the area, began a volume at 16:06 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
Minneapolis, MN (KMPX), launched 12:00Z, 4.1 hours before the alert went out and 85 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
- 1986 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- -217 m²/s²
- 0-3 km storm-relative helicity
- -37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
033 WWUS73 KMPX 171603 NPWMPX URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 1103 AM CDT Thu Sep 17 2020 WIZ015-016-027-028-181300- /O.NEW.KMPX.FR.Y.0004.200918T0600Z-200918T1300Z/ Barron-Rusk-Chippewa-Eau Claire- Including the cities of Rice Lake, Ladysmith, Chippewa Falls, and Eau Claire 1103 AM CDT Thu Sep 17 2020 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT FRIDAY... * WHAT...Temperatures as low as 34 will result in areas of frost formation. * WHERE...Barron, Rusk, Chippewa and Eau Claire Counties. * WHEN...From 1 AM to 8 AM CDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
3 follow-up statements
875 WWUS73 KMPX 172241 NPWMPX URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 541 PM CDT Thu Sep 17 2020 WIZ015-016-027-028-180645- /O.CON.KMPX.FR.Y.0004.200918T0600Z-200918T1300Z/ Barron-Rusk-Chippewa-Eau Claire- Including the cities of Rice Lake, Ladysmith, Chippewa Falls, and Eau Claire 541 PM CDT Thu Sep 17 2020 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM CDT FRIDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Eau Claire, Rusk, Barron and Chippewa Counties. * WHEN...From 1 AM to 8 AM CDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
698 WWUS73 KMPX 180303 NPWMPX URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 1003 PM CDT Thu Sep 17 2020 MNZ043>045-050-052-053-WIZ014-181115- /O.EXA.KMPX.FR.Y.0004.200918T0600Z-200918T1300Z/ Morrison-Mille Lacs-Kanabec-Benton-Isanti-Chisago-Polk- Including the cities of Little Falls, Princeton, Mora, Sauk Rapids, Cambridge, Center City, and Osceola 1003 PM CDT Thu Sep 17 2020 ...FROST ADVISORY IN EFFECT UNTIL 8 AM CDT FRIDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...In Wisconsin, Polk County. In Minnesota, Morrison, Mille Lacs, Kanabec, Benton, Isanti and Chisago Counties. * WHEN...Until 8 AM CDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WIZ015-016-027-028-181115- /O.CON.KMPX.FR.Y.0004.200918T0600Z-200918T1300Z/ Barron-Rusk-Chippewa-Eau Claire- Including the cities of Rice Lake, Ladysmith, Chippewa Falls, and Eau Claire 1003 PM CDT Thu Sep 17 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT FRIDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Chippewa, Eau Claire, Rusk and Barron Counties. * WHEN...Until 8 AM CDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
884 WWUS73 KMPX 180907 NPWMPX URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 407 AM CDT Fri Sep 18 2020 MNZ043-181015- /O.CAN.KMPX.FR.Y.0004.000000T0000Z-200918T1300Z/ Morrison- Including the city of Little Falls 407 AM CDT Fri Sep 18 2020 ...FROST ADVISORY IS CANCELLED... Cloud cover has pushed overhead and temperatures will remain in the 40s early this morning. $$ MNZ045-053-WIZ014>016-027-028-181300- /O.UPG.KMPX.FR.Y.0004.000000T0000Z-200918T1300Z/ /O.NEW.KMPX.FZ.W.0005.200918T0907Z-200918T1300Z/ Kanabec-Chisago-Polk-Barron-Rusk-Chippewa-Eau Claire- Including the cities of Mora, Center City, Osceola, Rice Lake, Ladysmith, Chippewa Falls, and Eau Claire 407 AM CDT Fri Sep 18 2020 ...FREEZE WARNING IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30. * WHERE...In Wisconsin, Polk, Barron, Rusk, Chippewa and Eau Claire Counties. In Minnesota, Kanabec and Chisago Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ WIZ023>025-181300- /O.NEW.KMPX.FZ.W.0005.200918T0907Z-200918T1300Z/ St. Croix-Pierce-Dunn- Including the cities of Hudson, River Falls, and Menomonie 407 AM CDT Fri Sep 18 2020 ...FREEZE WARNING IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30. * WHERE...St. Croix, Pierce and Dunn Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Frost and freeze conditions will kill crops, other 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. && $$ MNZ061-063-070-078-WIZ026-181300- /O.EXA.KMPX.FR.Y.0004.000000T0000Z-200918T1300Z/ Anoka-Washington-Dakota-Goodhue-Pepin- Including the cities of Blaine, Stillwater, Hastings, Red Wing, and Durand 407 AM CDT Fri Sep 18 2020 ...FROST ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...In Wisconsin, Pepin County. In Minnesota, Anoka, Washington, Dakota and Goodhue Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MNZ044-050-052-181300- /O.CON.KMPX.FR.Y.0004.000000T0000Z-200918T1300Z/ Mille Lacs-Benton-Isanti- Including the cities of Princeton, Sauk Rapids, and Cambridge 407 AM CDT Fri Sep 18 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Isanti, Benton and Mille Lacs 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. && $$ Borghoff
Nearby
Frost Advisories in Minnesota, 2020Frost Advisories in Wisconsin, 2020Every frost advisory in 2020
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.