Alert archive / Illinois / Winter Weather Advisories in 2021
Winter Weather Advisory 10, NWS Lincoln, IL
NWS Lincoln, IL issued this winter weather advisory at Feb 9, 2021, 2:56 PM CST for Clay County, Lawrence County, Richland County, Illinois. It took effect at Feb 10, 2021, 12:00 AM CST. It was in force for 22 hr.
The area
The counties it named.
The facts
- Issued
- Feb 9, 2021, 2:56 PM CST (20:56 UTC)
- In effect from
- Feb 10, 2021, 12:00 AM CST
- Expired
- Feb 10, 2021, 9:44 PM CST
- In force
- 22 hr
- Issued by
- NWS Lincoln, IL
Counties Clay County, IL, Lawrence County, IL, Richland County, IL
The radar
The Evansville,IN radar (KVWX), 62 km from the middle of the area, began a volume at 20:56 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
Nashville Metro, TN (KBNA), launched 12:00Z, 8.9 hours before the alert went out and 318 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
- 852 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- 276 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather 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 winter weather advisory went out at Feb 8, 5:15 PM CST, 21 hours 41 minutes earlier.
Area forecast discussion, Feb 8, 5:15 PM CST, 21 hours 41 minutes before
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</html>Hazardous weather outlook, Feb 8, 3:15 PM CST, 23 hours 41 minutes before
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</html>Nearby
Winter Weather Advisories in Illinois, 2021Every winter weather advisory 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.