Alert archive / Illinois / Tornado Warnings in 2011
Tornado Warning 136, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Jul 7, 2011, 7:07 PM CDT for Monroe County, Randolph County, Illinois; Sainte Genevieve County, Missouri. It was in force for 23 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 7, 2011, 7:07 PM CDT (00:07 UTC)
- Expired
- Jul 7, 2011, 7:30 PM CDT
- In force
- 23 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Monroe County, IL, Randolph County, IL, Sainte Genevieve County, MO
The radar
The St Louis radar (KLSX), 80 km from the middle of the area, began a volume at 00:08 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 |
|---|---|---|---|
| Jul 7, 5:03 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.1 hours before the alert went out and 271 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
- 143 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1134 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
043
WFUS53 KLSX 080007
TORLSX
ILC133-157-MOC186-080030-
/O.NEW.KLSX.TO.W.0136.110708T0007Z-110708T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
707 PM CDT THU JUL 7 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
SOUTH CENTRAL MONROE COUNTY IN SOUTHWEST ILLINOIS...
NORTHWESTERN RANDOLPH COUNTY IN SOUTHWEST ILLINOIS...
NORTHERN STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...
* UNTIL 730 PM CDT
* AT 704 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR BLOOMSDALE...OR 13 MILES WEST OF STE.
GENEVIEVE...AND MOVING EAST AT 25 MPH.
* LOCATIONS IMPACTED INCLUDE...
KIDD...RENAULT...PRAIRIE DU ROCHER...KELLOGG...MODOC...AMES...RUMA
AND ROOTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.
&&
LAT...LON 3794 9030 3807 9036 3809 9032 3809 9029
3810 9028 3811 9026 3813 9025 3823 9003
3800 8991
TIME...MOT...LOC 0007Z 250DEG 22KT 3805 9025
$$
TRUETT1 follow-up statement
599
WWUS53 KLSX 080031
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
731 PM CDT THU JUL 7 2011
ILC133-157-MOC186-080041-
/O.EXP.KLSX.TO.W.0136.000000T0000Z-110708T0030Z/
MONROE IL-RANDOLPH IL-STE. GENEVIEVE MO-
731 PM CDT THU JUL 7 2011
...THE TORNADO WARNING FOR NORTHERN STE. GENEVIEVE...NORTHWESTERN
RANDOLPH AND SOUTH CENTRAL MONROE COUNTIES HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM.
IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT.
LAT...LON 3794 9030 3807 9036 3809 9032 3809 9029
3810 9028 3811 9026 3813 9025 3823 9003
3800 8991
TIME...MOT...LOC 0007Z 250DEG 22KT 3805 9025
$$
TRUETTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 7:14 PM CDT | Flash Flood Warning | LSX | Bond, Fayette, Macoupin, Madison, Montgomery | 6 hr |
| Jul 7, 7:48 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 42 min |
| Jul 7, 7:51 PM CDT | Flash Flood Warning | LSX | Clinton, Madison, Monroe, Randolph, Saint Clair, Washington | 6 hr |
| Jul 7, 11:30 PM CDT | Areal Flood Warning | LSX | Fayette, Marion | 10 hr |
| Jul 8, 12:03 AM CDT | Areal Flood Warning | LSX | Monroe | 9 hr |
| Jul 8, 10:19 AM CDT | River Flood Warning | LSX | Fayette | 10 hr |
| Jul 8, 3:17 PM CDT | Heat Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 4 days |
Nearby
Tornado Warnings in Illinois, 2011Tornado Warnings in Missouri, 2011Every tornado warning in 2011Tornadoes in 2011
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.