Alert archive / Illinois / Tornado Warnings in 1990
Tornado Warning 4, NWS Lincoln, IL
NWS Lincoln, IL issued this tornado warning at May 12, 1990, 8:19 PM CDT for Clark County, Cumberland County, Illinois. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- May 12, 1990, 8:19 PM CDT (01:19 UTC)
- Expired
- May 12, 1990, 9:00 PM CDT
- In force
- 41 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Clark County, IL, Cumberland County, IL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 00:00Z, 1.3 hours before the alert went out and 255 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
- 240 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 642 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 292 m²/s²
- 0-3 km storm-relative helicity
- 395 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 7:56 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Coles, Cumberland | 34 min |
| May 12, 7:56 PM CDT | Severe Thunderstorm Warning | ILX | Edgar | 34 min |
Nearby
Tornado Warnings in Illinois, 1990Every tornado warning in 1990Tornadoes in 1990
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.