Alert archive / Illinois / Tornado Warnings in 2004
Tornado Warning 26, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at May 27, 2004, 8:02 PM CDT for Monroe County, Illinois. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 27, 2004, 8:02 PM CDT (01:02 UTC)
- Expired
- May 27, 2004, 8:45 PM CDT
- In force
- 43 min
- Issued by
- NWS St. Louis, MO
- Area
- Counties, with a storm outline in the text
County Monroe County, IL
The radar
The St Louis radar (KLSX), 57 km from the middle of the area, began a volume at 01:05 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.
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 27, 2:25 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 27, 7:40 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.0 hours before the alert went out and 244 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
- 651 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1078 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- -105 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- -0.4
- Supercell composite
- -3.6
The text
As transmitted, in the capitals the NWS used until 2016.
561 WFUS53 KLSX 280102 TORLSX ILC133-280145- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 802 PM CDT THU MAY 27 2004 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... MONROE COUNTY IN SOUTHWEST ILLINOIS * UNTIL 845 PM CDT * AT 802 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR FOUNTAIN. THE STORM WAS MOVING SOUTHEAST AT 30 MPH...AND MAY PRODUCE A TORNADO AT ANY TIME * LOCATIONS IMPACTED INCLUDE... WATERLOO WARTBURG MADONNAVILLE MAEYSTOWN BURKSVILLE NEW DESIGN HECKER THIS TORNADO WARNING IS AN UPGRADE TO THE SEVERE THUNDERSTORM WARNING PREVIOUSLY ISSUED FOR THE WARNED AREA. IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW MOVE TO A BASEMENT...UNDERGROUND STORM SHELTER...OR AN INTERIOR ROOM OR HALLWAY ON THE LOWEST LEVEL OF A STURDY BUILDING. LAT...LON 3853 9027 3827 9041 3809 9020 3829 8990 $$ TES/JC
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 7:31 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 44 min |
| May 27, 7:38 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 52 min |
| May 27, 7:40 PM CDT | Flash Flood Warning | LSX | Monroe | 4 hr |
| May 27, 7:45 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 30 min |
| May 27, 8:10 PM CDT | Flash Flood Warning | LSX | Clinton, Marion, Saint Clair | 16 hr |
| May 27, 8:10 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 35 min |
| May 27, 8:19 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 41 min |
| May 27, 8:23 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 52 min |
Nearby
Tornado Warnings in Illinois, 2004Every tornado warning in 2004Tornadoes in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.