Alert archive / Illinois / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 151, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 30, 2004, 5:19 PM CDT for Saint Clair County, Illinois. It was in force for 41 min. 6 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 30, 2004, 5:19 PM CDT (22:19 UTC)
- Expired
- May 30, 2004, 6:00 PM CDT
- In force
- 41 min
- Issued by
- NWS St. Louis, MO
- Area
- Counties, with a storm outline in the text
County Saint Clair County, IL
The radar
The St Louis radar (KLSX), 66 km from the middle of the area, began a volume at 22:21 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 |
|---|---|---|---|
| May 30, 5:20 PM CDT | TSTM WND GST 64 | 5 S Belleville, IL | SPOTTER MEASURED WIND GUST |
| May 30, 5:29 PM CDT | TSTM WND DMG | Scott Afb, IL | LARGE TREE LIMBS BLOWN DOWN...AT MID AMERICA AIRPORT. |
| May 30, 5:29 PM CDT | TSTM WND GST 97 | Scott Afb, IL | SCOTT AFB...KBLV...PEAK WIND GUST OF 97 MPH AT 529 PM. |
| May 30, 5:31 PM CDT | TSTM WND GST 73 | Belleville, IL | GUST 63 KT...73 MPH...AT KBLV. |
| May 30, 5:38 PM CDT | TSTM WND GST 60 | Belleville, IL | 60 MPH WIND GUST AT KBLV. |
| May 30, 5:45 PM CDT | TSTM WND DMG | Scott Afb, IL | 6 TO 8 INCH DIAMETER LIMBS BLOWN DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 30, 1:05 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.3 hours before the alert went out and 217 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
- 1629 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 569 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 8.9
The text
As transmitted, in the capitals the NWS used until 2016.
186
WUUS53 KLSX 302219
SVRLSX
ILC163-302300-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
519 PM CDT SUN MAY 30 2004
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS
* UNTIL 600 PM CDT
* AT 519 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER SMITHTON...MOVING NORTHEAST AT 65 MPH.
* LOCATIONS IMPACTED INCLUDE...
SCOTT AFB
SHILOH
OFALLON
FAIRVIEW HEIGHTS
LEBANON
MASCOUTAH
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.
LAT...LON 3845 9017 3827 8982 3855 8972 3866 8979
3864 9010
$$
CVKING/FGThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 3:27 PM CDT | Tornado Warning | LSX | Adams | 48 min |
| May 30, 4:04 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Madison, Montgomery | 41 min |
| May 30, 4:06 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 39 min |
| May 30, 4:09 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair | 51 min |
| May 30, 4:13 PM CDT | Tornado Warning | LSX | Bond, Madison, Montgomery | 47 min |
| May 30, 4:20 PM CDT | Tornado Warning | LSX | Bond, Clinton, Madison, Saint Clair | 40 min |
| May 30, 4:32 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 28 min |
| May 30, 4:44 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 46 min |
| May 30, 4:47 PM CDT | Tornado Warning | LSX | Brown | 28 min |
| May 30, 4:48 PM CDT | Tornado Warning | LSX | Fayette, Montgomery | 42 min |
| May 30, 4:51 PM CDT | Tornado Warning | LSX | Monroe | 39 min |
| May 30, 4:55 PM CDT | Tornado Warning | LSX | Bond, Clinton, Fayette, Marion | 50 min |
| May 30, 5:09 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 36 min |
| May 30, 5:44 PM CDT | Tornado Warning | LSX | Fayette | 31 min |
| May 30, 5:50 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 25 min |
| May 30, 6:14 PM CDT | Tornado Warning | LSX | Washington | 46 min |
| May 30, 6:36 PM CDT | Tornado Warning | LSX | Marion | 39 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2004Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.