Alert archive / Illinois / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 421, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 18, 2006, 9:40 AM CDT for Clinton County, Marion County, Illinois. It was in force for 50 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
- Jul 18, 2006, 9:40 AM CDT (14:40 UTC)
- Expired
- Jul 18, 2006, 10:30 AM CDT
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Counties, with a storm outline in the text
Counties Clinton County, IL, Marion County, IL
The radar
The Evansville,IN radar (KVWX), 130 km from the middle of the area, began a volume at 14:42 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 2.7 hours before the alert went out and 169 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
- 1141 J/kg
- Mixed-layer CIN
- -166 J/kg
- Mixed-layer LCL
- 1358 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS53 KLSX 181442
SVRLSX
ILC027-121-181530-
/O.NEW.KLSX.SV.W.0421.060718T1440Z-060718T1530Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
940 AM CDT TUE JUL 18 2006
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS
WESTERN MARION COUNTY IN SOUTH CENTRAL ILLINOIS
* UNTIL 1030 AM CDT
* AT 936 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 4 MILES
NORTHEAST OF BOULDER...OR ABOUT 13 MILES NORTHEAST OF CARLYLE...AND
MOVING SOUTHEAST AT 35 MPH.
* LOCATIONS IMPACTED INCLUDE...
BOULDER...
FAIRMAN...
SHATTUC...
ODIN...
SANDOVAL...
CENTRAL CITY...
CENTRALIA...
SALEM...
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.
LAT...LON 3882 8911 3874 8915 3873 8930 3850 8916
3850 8887
$$
BYRD2 follow-up statements
000 WWUS53 KLSX 181508 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1006 AM CDT TUE JUL 18 2006 ILC027-121-181530- /O.CON.KLSX.SV.W.0421.000000T0000Z-060718T1530Z/ CLINTON IL-MARION IL- 1006 AM CDT TUE JUL 18 2006 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 AM CDT FOR SOUTHWESTERN MARION AND EASTERN CLINTON COUNTIES... AT 1001 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR SANDOVAL...OR ABOUT 6 MILES NORTH OF CENTRALIA...MOVING SOUTH AT 25 MPH. LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... JUNCTION CITY...CENTRAL CITY AND CENTRALIA. LAT...LON 3866 8902 3866 8925 3851 8923 3848 8890 $$ BYRD
000 WWUS53 KLSX 181527 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1026 AM CDT TUE JUL 18 2006 ILC027-121-181536- /O.EXP.KLSX.SV.W.0421.000000T0000Z-060718T1530Z/ CLINTON IL-MARION IL- 1026 AM CDT TUE JUL 18 2006 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MARION AND EASTERN CLINTON COUNTIES EXPIRES AT 1030 AM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE COUNTY...SO THE WARNING WILL BE ALLOWED TO EXPIRE AT 1030 AM. LAT...LON 3866 8902 3866 8925 3851 8923 3848 8890 $$ BYRD
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 6:29 AM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 46 min |
| Jul 18, 7:19 AM CDT | Severe Thunderstorm Warning | LSX | Fayette | 32 min |
| Jul 18, 7:23 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 52 min |
| Jul 18, 8:04 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Madison | 41 min |
| Jul 18, 8:16 AM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 29 min |
| Jul 18, 8:32 AM CDT | Severe Thunderstorm Warning | LSX | Clinton | 43 min |
| Jul 18, 9:12 AM CDT | Severe Thunderstorm Warning | LSX | Washington | 48 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2006Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.