Alert archive / Illinois / Freeze Warnings in 2021
Freeze Warning 6, NWS Lincoln, IL
NWS Lincoln, IL issued this freeze warning at Oct 31, 2021, 8:14 PM CDT for Knox County, Marshall County, Stark County, Illinois. It took effect at Nov 1, 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
- Oct 31, 2021, 8:14 PM CDT (01:14 UTC)
- In effect from
- Nov 1, 2021, 12:00 AM CDT
- Expired
- Nov 1, 2021, 9:00 AM CDT
- In force
- 9 hr
- Issued by
- NWS Lincoln, IL
Counties Knox County, IL, Marshall County, IL, Stark County, IL
The radar
The Quad Cities radar (KDVN), 94 km from the middle of the area, began a volume at 01:16 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 00:00Z, 1.2 hours before the alert went out and 90 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
- 1825 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- -47 m²/s²
- 0-3 km storm-relative helicity
- -20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
594 WWUS73 KILX 010114 NPWILX URGENT - WEATHER MESSAGE National Weather Service Lincoln IL 814 PM CDT Sun Oct 31 2021 ILZ027-028-030-011400- /O.NEW.KILX.FZ.W.0006.211101T0500Z-211101T1400Z/ Knox-Stark-Marshall- Including the cities of Galesburg, Toulon, and Lacon 814 PM CDT Sun Oct 31 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CDT MONDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Knox, Stark and Marshall Counties. * WHEN...From midnight tonight to 9 AM CDT Monday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Sub-freezing temperatures with lows as low as the upper 20s are possible several nights this week. 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. && $$ Shimon
1 follow-up statement
591 WWUS73 KILX 011355 NPWILX URGENT - WEATHER MESSAGE National Weather Service Lincoln IL 855 AM CDT Mon Nov 1 2021 ILZ027-028-030-011500- /O.EXP.KILX.FZ.W.0006.000000T0000Z-211101T1400Z/ Knox-Stark-Marshall- Including the cities of Galesburg, Toulon, and Lacon 855 AM CDT Mon Nov 1 2021 ...FREEZE WARNING WILL EXPIRE AT 9 AM CDT THIS MORNING... Temperatures have warmed into the mid-30s, therefore the freeze warning has been allowed to expire. $$ Erwin
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 1, 2:41 PM CDT | Freeze Warning | ILX | Cass, Champaign, DeWitt, Fulton, Knox, Logan and 15 more | 18 hr |
Nearby
Freeze Warnings in Illinois, 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.