Alert archive / Illinois / Tornado Warnings in 2006
Tornado Warning 93, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Jul 21, 2006, 11:35 AM CDT for Madison County, Illinois. It was in force for 26 min. 3 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
- Jul 21, 2006, 11:35 AM CDT (16:35 UTC)
- Expired
- Jul 21, 2006, 12:01 PM CDT
- In force
- 26 min
- Issued by
- NWS St. Louis, MO
- Area
- Counties, with a storm outline in the text
County Madison County, IL
The radar
The St Louis radar (KLSX), 73 km from the middle of the area, began a volume at 16:37 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 |
|---|---|---|---|
| Jul 21, 11:35 AM CDT | TSTM WND DMG | Edwardsville, IL | NUMEROUS TREES DOWN. |
| Jul 21, 11:35 AM CDT | TSTM WND DMG | Troy, IL | TREES DOWN |
| Jul 21, 11:35 AM CDT | HAIL 0.75 | Glen Carbon, IL |
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 |
|---|---|---|---|
| Jul 21, 9:22 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 4.6 hours before the alert went out and 187 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
- 801 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 646 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KLSX 211635 TORLSX ILC119-211715- /O.NEW.KLSX.TO.W.0093.060721T1635Z-060721T1715Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1135 AM CDT FRI JUL 21 2006 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN MADISON COUNTY IN SOUTHWEST ILLINOIS * UNTIL 1215 PM CDT * AT 1132 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR TROY...MOVING EAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... MARINE... ST. JACOB... HIGHLAND... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM CDT FRIDAY AFTERNOON FOR SOUTHWESTERN ILLINOIS AND EASTERN MISSOURI. LAT...LON 3884 9001 3866 9002 3866 8960 3887 8961 $$ CVKING
2 follow-up statements
000 WWUS53 KLSX 211646 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1146 AM CDT FRI JUL 21 2006 ILC119-211715- /O.CON.KLSX.TO.W.0093.000000T0000Z-060721T1715Z/ MADISON IL- 1146 AM CDT FRI JUL 21 2006 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT FOR SOUTHEASTERN MADISON COUNTY... AT 1142 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR ST. JACOB...OR ABOUT 6 MILES SOUTHWEST OF HIGHLAND...MOVING EAST AT 30 MPH. LOCATIONS NEAR THE PATH OF THE TORNADO INCLUDE... ST. JACOB AND HIGHLAND AND RURAL SOUTHEAST MADISON COUNTY. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 3884 9001 3866 9002 3866 8960 3887 8961 $$ CVKING
000 WWUS53 KLSX 211701 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1201 PM CDT FRI JUL 21 2006 ILC119-211711- /O.CAN.KLSX.TO.W.0093.000000T0000Z-060721T1715Z/ MADISON IL- 1201 PM CDT FRI JUL 21 2006 ...THE TORNADO WARNING FOR SOUTHEASTERN MADISON COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY. ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE...AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM. LAT...LON 3884 9001 3866 9002 3866 8960 3887 8961 $$ CVKING
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 10:13 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 47 min |
| Jul 21, 10:34 AM CDT | Severe Thunderstorm Warning | LSX | Jersey | 41 min |
| Jul 21, 10:48 AM CDT | Severe Thunderstorm Warning | LSX | Madison | 57 min |
| Jul 21, 10:57 AM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 63 min |
| Jul 21, 11:24 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 66 min |
| Jul 21, 11:42 AM CDT | Tornado Warning | LSX | Clinton | 63 min |
| Jul 21, 11:59 AM CDT | Tornado Warning | LSX | Washington | 46 min |
| Jul 21, 12:20 PM CDT | Tornado Warning | LSX | Marion | 38 min |
Nearby
Tornado Warnings in Illinois, 2006Every tornado warning in 2006Tornadoes in 2006
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.