Alert archive / Iowa / Freeze Warnings in 2021
Freeze Warning 3, NWS Quad Cities, IA
NWS Quad Cities, IA issued this freeze warning at Oct 22, 2021, 2:22 PM CDT for 7 counties in Iowa. It took effect at Oct 23, 2021, 1:00 AM CDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Oct 22, 2021, 2:22 PM CDT (19:22 UTC)
- In effect from
- Oct 23, 2021, 1:00 AM CDT
- Expired
- Oct 23, 2021, 9:00 AM CDT
- In force
- 8 hr
- Issued by
- NWS Quad Cities, IA
Counties Benton County, IA, Buchanan County, IA, Delaware County, IA, Dubuque County, IA, Jackson County, IA, Jones County, IA, Linn County, IA
The radar
The Quad Cities radar (KDVN), 97 km from the middle of the area, began a volume at 19:22 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
Davenport, (KDVN), launched 12:00Z, 7.4 hours before the alert went out and 101 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
- 829 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
074 WWUS73 KDVN 221922 NPWDVN URGENT - WEATHER MESSAGE National Weather Service Quad Cities IA IL 222 PM CDT Fri Oct 22 2021 IAZ040>042-051>054-230330- /O.NEW.KDVN.FZ.W.0003.211023T0600Z-211023T1400Z/ Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson- Including the cities of Independence, Manchester, Dubuque, Vinton, Cedar Rapids, Anamosa, and Maquoketa 222 PM CDT Fri Oct 22 2021 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM CDT SATURDAY... * WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Buchanan, Delaware, Dubuque, Benton, Linn, Jones and Jackson Counties. * WHEN...From 1 AM to 9 AM CDT Saturday. * 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. && $$ IAZ063>068-076>078-ILZ001-002-007-009-015>018-024-230330- /O.NEW.KDVN.FR.Y.0010.211023T0600Z-211023T1400Z/ Iowa-Johnson-Cedar-Clinton-Muscatine-Scott-Keokuk-Washington- Louisa-Jo Daviess-Stephenson-Carroll-Whiteside-Rock Island- Henry IL-Bureau-Putnam-Mercer- Including the cities of Marengo, Iowa City, Tipton, Clinton, Muscatine, Davenport, Bettendorf, Sigourney, Washington, Wapello, Galena, Freeport, Mount Carroll, Sterling, Moline, Rock Island, Geneseo, Princeton, Hennepin, and Aledo 222 PM CDT Fri Oct 22 2021 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM CDT SATURDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of east central and southeast Iowa and north central and northwest Illinois. * WHEN...From 1 AM to 9 AM CDT Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ www.weather.gov/dvn
3 follow-up statements
441 WWUS73 KDVN 230224 NPWDVN URGENT - WEATHER MESSAGE National Weather Service Quad Cities IA IL 924 PM CDT Fri Oct 22 2021 IAZ040>042-051>054-231030- /O.CON.KDVN.FZ.W.0003.211023T0600Z-211023T1400Z/ Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson- Including the cities of Independence, Manchester, Dubuque, Vinton, Cedar Rapids, Anamosa, and Maquoketa 924 PM CDT Fri Oct 22 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM CDT SATURDAY... * WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Buchanan, Delaware, Dubuque, Benton, Linn, Jones and Jackson Counties. * WHEN...From 1 AM to 9 AM CDT Saturday. * 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. && $$ IAZ063>068-076>078-ILZ001-002-007-009-015>018-024-231030- /O.CON.KDVN.FR.Y.0010.211023T0600Z-211023T1400Z/ Iowa-Johnson-Cedar-Clinton-Muscatine-Scott-Keokuk-Washington- Louisa-Jo Daviess-Stephenson-Carroll-Whiteside-Rock Island- Henry IL-Bureau-Putnam-Mercer- Including the cities of Marengo, Iowa City, Tipton, Clinton, Muscatine, Davenport, Bettendorf, Sigourney, Washington, Wapello, Galena, Freeport, Mount Carroll, Sterling, Moline, Rock Island, Geneseo, Princeton, Hennepin, and Aledo 924 PM CDT Fri Oct 22 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM CDT SATURDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of east central and southeast Iowa and north central and northwest Illinois. * WHEN...From 1 AM to 9 AM CDT Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ www.weather.gov/dvn
343 WWUS73 KDVN 230730 NPWDVN URGENT - WEATHER MESSAGE National Weather Service Quad Cities IA IL 230 AM CDT Sat Oct 23 2021 IAZ040>042-051>054-231400- /O.CON.KDVN.FZ.W.0003.000000T0000Z-211023T1400Z/ Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson- Including the cities of Independence, Manchester, Dubuque, Vinton, Cedar Rapids, Anamosa, and Maquoketa 230 AM CDT Sat Oct 23 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30. * WHERE...Jackson, Benton, Jones, Linn, Dubuque, Delaware and Buchanan Counties. * WHEN...Until 9 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. && $$ IAZ063>068-076>078-ILZ001-002-007-009-015>018-024-231400- /O.CON.KDVN.FR.Y.0010.000000T0000Z-211023T1400Z/ Iowa-Johnson-Cedar-Clinton-Muscatine-Scott-Keokuk-Washington- Louisa-Jo Daviess-Stephenson-Carroll-Whiteside-Rock Island- Henry IL-Bureau-Putnam-Mercer- Including the cities of Marengo, Iowa City, Tipton, Clinton, Muscatine, Davenport, Bettendorf, Sigourney, Washington, Wapello, Galena, Freeport, Mount Carroll, Sterling, Moline, Rock Island, Geneseo, Princeton, Hennepin, and Aledo 230 AM CDT Sat Oct 23 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Temperatures in the low to mid 30s will lead to areas of frost. * WHERE...Portions of east central and southeast Iowa and north central and northwest Illinois. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ www.weather.gov/dvn
170 WWUS73 KDVN 231400 NPWDVN URGENT - WEATHER MESSAGE National Weather Service Quad Cities IA IL 900 AM CDT Sat Oct 23 2021 IAZ040>042-051>054-231500- /O.EXP.KDVN.FZ.W.0003.000000T0000Z-211023T1400Z/ Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson- Including the cities of Independence, Manchester, Dubuque, Vinton, Cedar Rapids, Anamosa, and Maquoketa 900 AM CDT Sat Oct 23 2021 ...FREEZE WARNING WILL EXPIRE AT 9 AM CDT THIS MORNING... Temperatures are warming above freezing and the threat for frost and freeze is ending. Thus the Freeze Warning will be allowed to expire at 9 AM CDT. $$ IAZ063>068-076>078-ILZ001-002-007-009-015>018-024-231500- /O.EXP.KDVN.FR.Y.0010.000000T0000Z-211023T1400Z/ Iowa-Johnson-Cedar-Clinton-Muscatine-Scott-Keokuk-Washington- Louisa-Jo Daviess-Stephenson-Carroll-Whiteside-Rock Island- Henry IL-Bureau-Putnam-Mercer- Including the cities of Marengo, Iowa City, Tipton, Clinton, Muscatine, Davenport, Bettendorf, Sigourney, Washington, Wapello, Galena, Freeport, Mount Carroll, Sterling, Moline, Rock Island, Geneseo, Princeton, Hennepin, and Aledo 900 AM CDT Sat Oct 23 2021 ...FROST ADVISORY WILL EXPIRE AT 9 AM CDT THIS MORNING... Temperatures are warming above freezing and the threat for frost is ending. Thus the Frost Advisory will be allowed to expire at 9 AM CDT. $$ www.weather.gov/dvn
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 22, 2:22 PM CDT | Frost Advisory | DVN | Cedar, Clinton, Iowa, Johnson, Keokuk, Louisa and 3 more | 19 hr |
Nearby
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.