Alert archive / Illinois / Frost Advisories in 2020
Frost Advisory 1, NWS Lincoln, IL
NWS Lincoln, IL issued this frost advisory at Apr 10, 2020, 3:14 AM CDT for 13 counties in Illinois. It took effect at Apr 11, 2020, 1:00 AM CDT. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Apr 10, 2020, 3:14 AM CDT (08:14 UTC)
- In effect from
- Apr 11, 2020, 1:00 AM CDT
- Expired
- Apr 11, 2020, 3:13 AM CDT
- In force
- 2 hr
- Issued by
- NWS Lincoln, IL
Counties Champaign County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL, Vermilion County, IL
The radar
The Evansville,IN radar (KVWX), 122 km from the middle of the area, began a volume at 08:18 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, 8.2 hours before the alert went out and 103 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
- 1966 m above ground
- 0-6 km bulk shear
- 114 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 248 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Lincoln, IL wrote its last area forecast discussion before this frost advisory went out at Apr 9, 11:27 PM CDT, 3 hours 47 minutes earlier.
Area forecast discussion, Apr 9, 11:27 PM CDT, 3 hours 47 minutes before
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</html>Hazardous weather outlook, Apr 9, 11:37 AM CDT, 15 hours 37 minutes before
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</html>Nearby
Frost Advisories in Illinois, 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.