Alert archive / Illinois / Tornado Warnings in 1998
Tornado Warning 43, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at May 12, 1998, 8:16 PM CDT for Macoupin County, Illinois. It was in force for 49 min. 3 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
- May 12, 1998, 8:16 PM CDT (01:16 UTC)
- Expired
- May 12, 1998, 9:05 PM CDT
- In force
- 49 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Macoupin County, IL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 12, 8:16 PM CDT | Tornado F1 | Palmyra, IL | |
| May 12, 8:36 PM CDT | Hail 0.75 | Girard, IL | |
| May 12, 8:46 PM CDT | Hail 0.75 | Standard City, 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 |
|---|---|---|---|
| May 12, 7:30 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.3 hours before the alert went out and 150 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
- 1906 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1317 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 6.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 130115 RRA TORSTL ILC117-130205- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 816 PM CDT TUE MAY 12 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... NORTHERN MACOUPIN COUNTY IN SOUTHWESTERN ILLINOIS * UNTIL 905 PM CDT * AT 810 PM CDT... SEVERE STORM SPOTTERS REPORTED A FUNNEL CLOUD ONE MILE NORTHEAST OF PALMYRA... MOVING EAST AT 20 MPH. * LOCATIONS IN THE PATH... GIRARD VIRDEN IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW! A BASEMENT OFFERS THE BEST PROTECTION. IF NOT AVAILABLE...MOVE TO THE LOWEST FLOOR AND SEEK SHELTER IN A SMALL INTERIOR ROOM. STAY AWAY FROM OUTSIDE WALLS AND WINDOWS. MOBILE HOM ES SHOULD BE ABANDONED IN FAVOR OF A MORE SUBSTANTIAL STRUCTURE. DO NOT TRY TO OUTRUN A TORNADO IN A VEHICLE METZE/GLASS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 7:04 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 51 min |
| May 12, 7:49 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 61 min |
| May 12, 8:43 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 47 min |
| May 12, 9:54 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 46 min |
| May 12, 9:56 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 49 min |
| May 12, 10:08 PM CDT | Tornado Warning | LSX | Montgomery | 47 min |
| May 12, 10:36 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 49 min |
| May 12, 11:00 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 50 min |
| May 12, 11:22 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 48 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.