Alert archive / Illinois / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 271, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 10, 2011, 6:43 PM CDT for 4 counties in Illinois. It was in force for 62 min. 1 report 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
- Jun 10, 2011, 6:43 PM CDT (23:43 UTC)
- Expired
- Jun 10, 2011, 7:45 PM CDT
- In force
- 62 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Bond County, IL, Clinton County, IL, Fayette County, IL, Marion County, IL
The radar
The Evansville,IN radar (KVWX), 129 km from the middle of the area, began a volume at 23:46 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 |
|---|---|---|---|
| Jun 10, 6:54 PM CDT | HAIL 0.25 | 1 E Dudleyville, 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 |
|---|---|---|---|
| Jun 10, 1:02 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 4:57 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.7 hours before the alert went out and 150 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
- 581 J/kg
- Mixed-layer CIN
- -228 J/kg
- Mixed-layer LCL
- 670 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
137
WUUS53 KLSX 102343
SVRLSX
ILC005-027-051-121-110045-
/O.NEW.KLSX.SV.W.0271.110610T2343Z-110611T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
643 PM CDT FRI JUN 10 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN BOND COUNTY IN SOUTH CENTRAL ILLINOIS...
NORTHEASTERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
SOUTHERN FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...
NORTHERN MARION COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 745 PM CDT
* AT 640 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR BEAVER CREEK...OR 9 MILES SOUTH OF
GREENVILLE...AND MOVING EAST AT 25 MPH. A SECOND SEVERE STORM
WAS LOCATED JUST NORTH OF PATOKA...ALSO MOVING EAST AT 25 MPH.
* LOCATIONS IMPACTED INCLUDE...
TAMALCO...BOULDER...PATOKA...SHOBONIER...BROWNSTOWN...KINMUNDY...
FARINA...ST. ELMO...KEYESPORT...PLEASANT MOUND...PITTSBURG...
VERNON...ST. PAUL...ST. PETER...LOOGOOTEE...ST. JAMES...LA CLEDE
AND AVENA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...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 3865 8946 3882 8953 3905 8880 3892 8880
3892 8870 3891 8869 3878 8869
TIME...MOT...LOC 2342Z 253DEG 23KT 3876 8938
WIND...HAIL <50MPH 1.00IN
$$
TRUETT2 follow-up statements
585
WWUS53 KLSX 110022
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
722 PM CDT FRI JUN 10 2011
ILC027-110031-
/O.CAN.KLSX.SV.W.0271.000000T0000Z-110611T0045Z/
CLINTON IL-
722 PM CDT FRI JUN 10 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLINTON COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3870 8914 3873 8914 3874 8916 3874 8950
3882 8953 3905 8880 3892 8880 3892 8872
3891 8869 3878 8869
TIME...MOT...LOC 0021Z 248DEG 13KT 3881 8932
$$
ILC005-051-121-110045-
/O.CON.KLSX.SV.W.0271.000000T0000Z-110611T0045Z/
MARION IL-FAYETTE IL-BOND IL-
722 PM CDT FRI JUN 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
BOND...SOUTHERN FAYETTE AND NORTHERN MARION COUNTIES UNTIL 745 PM
CDT...
AT 716 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR TAMALCO...OR 7 MILES SOUTHEAST OF
GREENVILLE...MOVING EAST AT 15 MPH.
LOCATIONS IMPACTED INCLUDE...
SHOBONIER...PATOKA...BROWNSTOWN...KINMUNDY...ST. ELMO...FARINA...
PLEASANT MOUND...PITTSBURG...VERNON...ST. PAUL...ST. PETER...
LOOGOOTEE...ST. JAMES AND LA CLEDE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...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.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 3870 8914 3873 8914 3874 8916 3874 8950
3882 8953 3905 8880 3892 8880 3892 8872
3891 8869 3878 8869
TIME...MOT...LOC 0021Z 248DEG 13KT 3881 8932
WIND...HAIL <50MPH 1.00IN
$$
TRUETT704
WWUS53 KLSX 110043
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
743 PM CDT FRI JUN 10 2011
ILC005-051-121-110052-
/O.EXP.KLSX.SV.W.0271.000000T0000Z-110611T0045Z/
MARION IL-FAYETTE IL-BOND IL-
743 PM CDT FRI JUN 10 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BOND...SOUTHERN
FAYETTE AND NORTHERN MARION COUNTIES WILL EXPIRE AT 745 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER SMALL HAIL AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS
THUNDERSTORM AS IT DRIFTS EAST FROM SOUTHEAST BOND INTO SOUTHWEST
FAYETTE AND NORTHWEST MARION COUNTIES.
LAT...LON 3870 8914 3873 8914 3874 8916 3874 8950
3882 8953 3905 8880 3892 8880 3892 8872
3891 8869 3878 8869
TIME...MOT...LOC 0042Z 248DEG 13KT 3884 8923
$$
TRUETTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 12:05 AM CDT | Flash Flood Warning | LSX | Adams | 6 hr |
| Jun 10, 11:38 AM CDT | River Flood Warning | LSX | Adams | 13 days |
| Jun 10, 11:38 AM CDT | River Flood Warning | LSX | Adams | 14 days |
| Jun 10, 11:38 AM CDT | River Flood Warning | LSX | Pike | 14 days |
| Jun 10, 3:38 PM CDT | Areal Flood Advisory | LSX | Marion | 4 hr |
| Jun 10, 5:10 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 65 min |
| Jun 10, 5:30 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Pike | 45 min |
| Jun 10, 5:42 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 48 min |
| Jun 10, 5:49 PM CDT | Tornado Warning | LSX | Adams | 41 min |
| Jun 10, 6:16 PM CDT | Flash Flood Warning | LSX | Marion | 10 hr |
| Jun 10, 6:27 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 48 min |
| Jun 10, 6:30 PM CDT | Tornado Warning | LSX | Adams | 30 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2011Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.