Alert archive / Iowa / Freeze Warnings in 2021
Freeze Warning 5, NWS Quad Cities, IA
NWS Quad Cities, IA issued this freeze warning at Nov 1, 2021, 2:14 PM CDT for 4 counties in Illinois; 5 counties in Iowa; Clark County, Scotland County, Missouri. It took effect at Nov 2, 2021, 12:00 AM CDT. It was in force for 9 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
- Nov 1, 2021, 2:14 PM CDT (19:14 UTC)
- In effect from
- Nov 2, 2021, 12:00 AM CDT
- Expired
- Nov 2, 2021, 9:00 AM CDT
- In force
- 9 hr
- Issued by
- NWS Quad Cities, IA
Counties Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Van Buren County, IA, Hancock County, IL, Henderson County, IL, McDonough County, IL, Warren County, IL, Clark County, MO, Scotland County, MO
The radar
The Quad Cities radar (KDVN), 122 km from the middle of the area, began a volume at 19:17 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, 7.2 hours before the alert went out and 127 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
- 1471 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- -85 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
422 WWUS73 KDVN 011914 NPWDVN URGENT - WEATHER MESSAGE National Weather Service Quad Cities IA IL 214 PM CDT Mon Nov 1 2021 IAZ087>089-098-099-ILZ025-026-034-035-MOZ009-010-020315- /O.NEW.KDVN.FZ.W.0005.211102T0500Z-211102T1400Z/ Jefferson-Henry IA-Des Moines-Van Buren-Lee-Henderson-Warren- Hancock-McDonough-Scotland-Clark- Including the cities of Fairfield, Mount Pleasant, Burlington, Keosauqua, Fort Madison, Oquawka, Monmouth, Carthage, Macomb, Memphis, and Kahoka 214 PM CDT Mon Nov 1 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 27 expected. * WHERE...Portions of northeast Missouri, southeast Iowa and west central Illinois. * WHEN...From midnight tonight to 9 AM CDT Tuesday. * 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. && $$ www.weather.gov/dvn
3 follow-up statements
576 WWUS73 KDVN 020106 NPWDVN URGENT - WEATHER MESSAGE National Weather Service Quad Cities IA IL 806 PM CDT Mon Nov 1 2021 IAZ087>089-098-099-ILZ025-026-034-035-MOZ009-010-021030- /O.CON.KDVN.FZ.W.0005.211102T0500Z-211102T1400Z/ Jefferson-Henry IA-Des Moines-Van Buren-Lee-Henderson-Warren- Hancock-McDonough-Scotland-Clark- Including the cities of Fairfield, Mount Pleasant, Burlington, Keosauqua, Fort Madison, Oquawka, Monmouth, Carthage, Macomb, Memphis, and Kahoka 806 PM CDT Mon Nov 1 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CDT TUESDAY... * WHAT...Temperatures in the upper 20s to low 30s. * WHERE...Portions of northeast Missouri, southeast Iowa and west central Illinois. * WHEN...From midnight tonight to 9 AM CDT Tuesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation, and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ www.weather.gov/dvn Uttech
487 WWUS73 KDVN 020801 NPWDVN URGENT - WEATHER MESSAGE National Weather Service Quad Cities IA IL 301 AM CDT Tue Nov 2 2021 IAZ087>089-098-099-ILZ025-026-034-035-MOZ009-010-021400- /O.CON.KDVN.FZ.W.0005.000000T0000Z-211102T1400Z/ Jefferson-Henry IA-Des Moines-Van Buren-Lee-Henderson-Warren- Hancock-McDonough-Scotland-Clark- Including the cities of Fairfield, Mount Pleasant, Burlington, Keosauqua, Fort Madison, Oquawka, Monmouth, Carthage, Macomb, Memphis, and Kahoka 301 AM CDT Tue Nov 2 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 28. * WHERE...Portions of northeast Missouri, southeast Iowa and west central Illinois. * 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. && $$ www.weather.gov/dvn
198 WWUS73 KDVN 021423 NPWDVN URGENT - WEATHER MESSAGE National Weather Service Quad Cities IA IL 923 AM CDT Tue Nov 2 2021 IAZ087>089-098-099-ILZ025-026-034-035-MOZ009-010-021530- /O.EXP.KDVN.FZ.W.0005.000000T0000Z-211102T1400Z/ Jefferson-Henry IA-Des Moines-Van Buren-Lee-Henderson-Warren- Hancock-McDonough-Scotland-Clark- Including the cities of Fairfield, Mount Pleasant, Burlington, Keosauqua, Fort Madison, Oquawka, Monmouth, Carthage, Macomb, Memphis, and Kahoka 923 AM CDT Tue Nov 2 2021 ...FREEZE WARNING HAS EXPIRED... Temperatures are warming above freezing and the threat for frost and freeze is ending. Thus, the Freeze Warning was allowed to expire at 9 AM CDT.. $$ www.weather.gov/dvn
Nearby
Freeze Warnings in Iowa, 2021Freeze Warnings in Illinois, 2021Freeze Warnings in Missouri, 2021Every freeze warning 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.