Alert archive / Illinois / Tornado Warnings in 1999
Tornado Warning 40, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Jun 1, 1999, 7:39 PM CDT for Macoupin County, Illinois. It was in force for 46 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
- Jun 1, 1999, 7:39 PM CDT (00:39 UTC)
- Expired
- Jun 1, 1999, 8:25 PM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Macoupin County, IL
The radar
The St Louis radar (KLSX), 91 km from the middle of the area, began a volume at 00:40 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 |
|---|---|---|---|
| Jun 1, 7:45 PM CDT | Thunderstorm Wind 60 | Bunker Hill, IL | |
| Jun 1, 7:55 PM CDT | Tornado F1 | Carlinville, 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 |
|---|---|---|---|
| Jun 1, 4:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.7 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
- 1323 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 945 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 162 m²/s²
- 0-3 km storm-relative helicity
- 315 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 7.0
The text
As transmitted, in the capitals the NWS used until 2016.
118 WFUS1 KSTL 020040 RRA TORSTL ILC117-020125- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 739 PM CDT TUE JUN 1 1999 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... MACOUPIN COUNTY IN SOUTHWESTERN ILLINOIS * UNTIL 825 PM CDT * AT 737 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 5 MILES SOUTHWEST OF CARLINVILLE... MOVING NORTHEAST AT 35 MPH. * LOCATIONS IN THE PATH... CARLINVILLE MACOUPIN STATION WOMACK 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 HOMES SHOULD BE ABANDONED IN FAVOR OF A MORE SUBSTANTIAL STRUCTURE. DO NOT TRY TO OUTRUN A TORNADO IN A VEHICLE FG/RP
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 1, 7:14 PM CDT, 25 minutes before
ILZ095>097-MOZ009-010-018-019-026-027-034>036-041-042-047-048- 050>052-060-020315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 714 PM CDT TUE JUN 1 1999 ...TORNADO WATCH 351 FOR PORTION OF CENTRAL...EAST CENTRAL AND MOST OF NORTHEAST MISSOURI HAS BEEN CANCEL... CITIES IN THIS WATCH WERE COLUMBIA...QUINCY...HANNIBAL...MEXICO...PALMYRA AND TROY. WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WERE STILL PRESENT ACROSS THE AREA THIS EVENING. AT THIS TIME SEVERE STORMS HAVE MOVED TO THE SOUTHEAST AND WILL NOT EFFECT THE AREA ANY LONGER THIS EVENING. HOWEVER...STAY TUNE WITH NOAA WEATHER RADIO IN ORDER TO BE INFORM WITH OUR CURRENT WEATHER SITUATION.
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 7:43 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 47 min |
| Jun 1, 8:03 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 47 min |
| Jun 1, 8:05 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 35 min |
| Jun 1, 8:07 PM CDT | Tornado Warning | LSX | Fayette | 33 min |
| Jun 1, 8:09 PM CDT | Tornado Warning | LSX | Montgomery | 36 min |
| Jun 1, 8:49 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 51 min |
Nearby
Tornado Warnings in Illinois, 1999Every tornado warning in 1999Tornadoes in 1999
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.