Alert archive / Illinois / Tornado Warnings in 1998
Tornado Warning 49, NWS Lincoln, IL
NWS Lincoln, IL issued this tornado warning at Apr 30, 1998, 4:42 PM CDT for Macon County, Illinois. It was in force for 48 min. 1 report 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 30, 1998, 4:42 PM CDT (21:42 UTC)
- Expired
- Apr 30, 1998, 5:30 PM CDT
- In force
- 48 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County Macon County, IL
The radar
The Lincoln radar (KILX), 45 km from the middle of the area, began a volume at 21:38 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 30, 4:47 PM CDT | Tornado F0 | Macon, IL | A tornado briefly touched down in a field 4 miles east of Macon. No injuries or damage were reported. |
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, 9.7 hours before the alert went out and 45 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
- 2 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 905 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -66 m²/s²
- 0-3 km storm-relative helicity
- -102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
928 WFUS1 KSPI 302143 RRA TORSPI ILC115-302230- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE LINCOLN IL 442 PM CDT THU APR 30 1998 THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A * TORNADO WARNING FOR MACON COUNTY IN CENTRAL ILLINOIS * UNTIL 530 PM CDT * AT 437 PM CDT CONSERVATION POLICE OFFICER REPORTED A TORNADO 5 MILES EAST OF MACON ON COUNTY LINE ROAD...MOVING NORTH NORTHWEST AT 20 MPH. * THIS STORM IS EXPECTED TO AFFECT AREAS AROUND... DECATUR HARRISTOWN WARRENSBURG IF YOU ARE IN THE PATH OF THIS STORM...TAKE COVER IN A BASEMENT OR INTERIOR ROOM ON THE LOWEST FLOOR. VEHICLES AND MOBILE HOMES SHOULD BE ABANDONED FOR A SAFER SHELTER. GOETSCH &
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 7:43 PM CDT | Flash Flood Warning | ILX | Logan, McLean | 2 hr |
| Apr 29, 8:23 PM CDT | Severe Thunderstorm Warning | ILX | Mason, Tazewell | 52 min |
| Apr 29, 8:46 PM CDT | Severe Thunderstorm Warning | ILX | Peoria | 44 min |
| Apr 30, 5:30 PM CDT | Tornado Warning | ILX | Macon | 60 min |
| Apr 30, 6:29 PM CDT | Tornado Warning | ILX | Macon | 61 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.