Alert archive / Illinois / Freeze Watches in 2021
Freeze Watch 2, NWS Paducah, KY
NWS Paducah, KY issued this freeze watch at Apr 19, 2021, 4:08 AM CDT for 12 counties in Illinois; 6 counties in Missouri. It took effect at Apr 21, 2021, 1:00 AM CDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Apr 19, 2021, 4:08 AM CDT (09:08 UTC)
- In effect from
- Apr 21, 2021, 1:00 AM CDT
- Expired
- Apr 19, 2021, 3:25 PM CDT
- In force
- Issued by
- NWS Paducah, KY
Counties Edwards County, IL, Franklin County, IL, Hamilton County, IL, Jackson County, IL, Jefferson County, IL, Perry County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Bollinger County, MO, Cape Girardeau County, MO, Carter County, MO, Perry County, MO, Ripley County, MO, Wayne County, MO
The radar
The Paducah radar (KPAH), 87 km from the middle of the area, began a volume at 09:09 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
Lincoln, IL (KILX), launched 00:00Z, 9.1 hours before the alert went out and 271 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
- 8 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 2305 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this freeze watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Paducah, KY wrote its last area forecast discussion before this freeze watch went out at Apr 19, 3:57 AM CDT, 11 minutes earlier.
Area forecast discussion, Apr 19, 3:57 AM CDT, 11 minutes before
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</html>The office that day
Everything else NWS Paducah, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 3:25 PM CDT | Freeze Warning | PAH | Ballard, Carlisle, Crittenden, Fulton, Graves, Henderson and 4 more | 42 hr |
Nearby
Freeze Watches in Illinois, 2021Freeze Watches in Missouri, 2021Every freeze watch 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.