Alert archive / Illinois / Tornado Warnings in 1998
Tornado Warning 7, NWS Lincoln, IL
NWS Lincoln, IL issued this tornado warning at Apr 7, 1998, 4:36 PM CDT for Mason County, Illinois. It was in force for 54 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 7, 1998, 4:36 PM CDT (21:36 UTC)
- Expired
- Apr 7, 1998, 5:30 PM CDT
- In force
- 54 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County Mason County, IL
The radar
The Lincoln radar (KILX), 50 km from the middle of the area, began a volume at 21:39 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 7, 4:47 PM CDT | Hail 1.75 | Havana, IL | |
| Apr 7, 5:22 PM CDT | Hail 1 | Manito, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 7, 2:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.6 hours before the alert went out and 112 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
- 1568 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
770 WFUS1 KSPI 072137 RRA TORSPI ILC125-072230- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE LINCOLN IL 436 PM CDT TUE APR 7 1998 * TORNADO WARNING FOR MASON COUNTY IN CENTRAL ILLINOIS * UNTIL 530 PM CDT * SOME LOCATIONS AFFECTED KILBOURNE HAVANA EASTON MANITO * AT 435 PM CDT LINCOLN STORM SPOTTERS REPORTED A TORNADO 25 MILES NORTHEAST OF BEARDSTOWN...MOVING NORTHEAST AT 25 MPH. TAKE COVER IMMEDIATELY IN A BASEMENT OR INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON MOBILE HOMES AND VEHICLES FOR SAFER SHELTER. PLAHMER
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 2:59 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Peoria | 61 min |
| Apr 7, 3:27 PM CDT | Tornado Warning | ILX | Fulton, Peoria | 48 min |
| Apr 7, 4:00 PM CDT | Tornado Warning | ILX | Cass, Mason, Schuyler | 45 min |
| Apr 7, 4:07 PM CDT | Tornado Warning | ILX | Peoria | 53 min |
| Apr 7, 4:13 PM CDT | Tornado Warning | ILX | Morgan, Sangamon | 47 min |
| Apr 7, 4:51 PM CDT | Tornado Warning | ILX | Fulton, Schuyler | 69 min |
| Apr 7, 4:57 PM CDT | Tornado Warning | ILX | Logan, Sangamon | 63 min |
| Apr 7, 5:05 PM CDT | Tornado Warning | ILX | Christian, Sangamon | 55 min |
| Apr 7, 5:10 PM CDT | Tornado Warning | ILX | Tazewell | 65 min |
| Apr 7, 5:22 PM CDT | Tornado Warning | ILX | Mason | 53 min |
| Apr 7, 5:51 PM CDT | Tornado Warning | ILX | Fulton | 69 min |
| Apr 7, 5:54 PM CDT | Tornado Warning | ILX | Logan | 66 min |
| Apr 7, 5:57 PM CDT | Tornado Warning | ILX | Christian | 63 min |
| Apr 7, 6:06 PM CDT | Tornado Warning | ILX | Macon, Shelby | 69 min |
| Apr 7, 6:13 PM CDT | Tornado Warning | ILX | Peoria, Tazewell | 62 min |
| Apr 7, 6:13 PM CDT | Tornado Warning | ILX | Mason | 62 min |
| Apr 7, 6:25 PM CDT | Tornado Warning | ILX | Menard | 50 min |
| Apr 7, 6:28 PM CDT | Tornado Warning | ILX | DeWitt, McLean | 62 min |
| Apr 7, 6:33 PM CDT | Tornado Warning | ILX | Moultrie | 42 min |
| Apr 7, 6:44 PM CDT | Tornado Warning | ILX | Knox, Stark | 46 min |
| Apr 7, 6:55 PM CDT | Tornado Warning | ILX | Piatt | 50 min |
| Apr 7, 6:57 PM CDT | Tornado Warning | ILX | Logan | 63 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.