Alert archive / Illinois / Tornado Warnings in 1998
Tornado Warning 47, NWS Lincoln, IL
NWS Lincoln, IL issued this tornado warning at Apr 29, 1998, 4:56 PM CDT for McLean County, Illinois. It was in force for 49 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 29, 1998, 4:56 PM CDT (21:56 UTC)
- Expired
- Apr 29, 1998, 5:45 PM CDT
- In force
- 49 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County McLean County, IL
The radar
The Lincoln radar (KILX), 56 km from the middle of the area, began a volume at 22:00 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 29, 4:58 PM CDT | Tornado F0 | Ellsworth, IL | A tornado touched down 2 miles west southwest of Ellsworth. It uprooted one 2 foot diameter tree and broke off two others several feet above the ground. One of the trees fell across the front porch of a house and onto a nearby shed, destroying both. A garag |
| Apr 29, 5:41 PM CDT | Hail 1.75 | Mc Lean, IL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.9 hours before the alert went out and 43 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
- 15 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 514 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
320 WFUS1 KSPI 292157 RRA TORSPI ILC113-292245- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE LINCOLN IL 456 PM CDT WED APR 29 1998 THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A * TORNADO WARNING FOR EASTERN MCLEAN COUNTY IN CENTRAL ILLINOIS * UNTIL 545 PM CDT * AT 450 PM CDT DOPPLER RADAR AND LAW ENFORCEMENT INDICATED A DEVELOPING TORNADO 10 MILES SOUTHEAST OF BLOOMINGTON...MOVING NORTHEAST AT 20 MPH. * THIS STORM IS EXPECTED TO AFFECT AREAS AROUND... LEROY ELLSWORTH ARROWSMITH SAYBROOK THE TORNADO MAY BE OBSCURED BY RAIN AND MAY NOT BE VISIBLE. TAKE COVER IN A BASEMENT OR INTERIOR ROOM ON THE LOWEST FLOOR. BYRD/AUTEN
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 5:32 PM CDT | Tornado Warning | ILX | McLean | 58 min |
Nearby
Tornado Warnings in Illinois, 1998Every tornado warning in 1998Tornadoes in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.