Alert archive / Illinois / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 104, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 11, 2016, 8:15 PM CDT for Calhoun County, Jersey County, Madison County, Illinois; Saint Charles County, Saint Louis County, City of Saint Louis, Missouri. It was in force for 45 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
- May 11, 2016, 8:15 PM CDT (01:15 UTC)
- Expired
- May 11, 2016, 9:00 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Calhoun County, IL, Jersey County, IL, Madison County, IL, City of Saint Louis, MO, Saint Charles County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 47 km from the middle of the area, began a volume at 01:19 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 |
|---|---|---|---|
| May 11, 12:10 PM CDT | Severe Thunderstorm Watch | SPC | 12 hr |
| May 11, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.3 hours before the alert went out and 201 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
- 748 J/kg
- Mixed-layer CIN
- -157 J/kg
- Mixed-layer LCL
- 1145 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 257 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.4
The text
As transmitted.
209
WUUS53 KLSX 120115
SVRLSX
ILC013-083-119-MOC183-189-510-120200-
/O.NEW.KLSX.SV.W.0104.160512T0115Z-160512T0200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
815 PM CDT WED MAY 11 2016
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN MADISON COUNTY IN SOUTHWESTERN ILLINOIS...
SOUTHEASTERN JERSEY COUNTY IN SOUTHWESTERN ILLINOIS...
SOUTHEASTERN CALHOUN COUNTY IN SOUTHWESTERN ILLINOIS...
NORTHEASTERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
NORTHEASTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
ST. LOUIS CITY IN EAST CENTRAL MISSOURI...
* UNTIL 900 PM CDT
* AT 814 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER ST. CHARLES...
MOVING NORTHEAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...TRAINED WEATHER SPOTTERS.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
ST. LOUIS...ST. CHARLES...ST. PETERS...FLORISSANT...CHESTERFIELD...
UNIVERSITY CITY...GRANITE CITY...ALTON...KIRKWOOD...MARYLAND HEIGHTS...
HAZELWOOD...COLLINSVILLE...EDWARDSVILLE...WEBSTER GROVES...FERGUSON...
GODFREY...CREVE COEUR...OVERLAND...CLAYTON AND JENNINGS.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
INTERSTATE 55 IN ILLINOIS NEAR EXIT 23.
INTERSTATE 44 IN MISSOURI BETWEEN EXITS 276 AND 277.
INTERSTATE 70 IN MISSOURI BETWEEN EXITS 225 AND 231.
THIS ALSO INCLUDES SCOTT JOPLIN HISTORIC SITE...CONFLUENCE STATE
PARK...FIRST MISSOURI STATE CAPITOL HISTORIC SITE...AND HORSESHOE LAKE
STATE PARK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE IMMEDIATELY TO SHELTER INSIDE A STRONG BUILDING. STAY
AWAY FROM WINDOWS.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3877 8981 3866 9007 3866 9018 3861 9019
3851 9042 3889 9063 3919 9024 3902 9014
3900 9015
TIME...MOT...LOC 0114Z 240DEG 44KT 3881 9049
HAIL...1.00IN
WIND...60MPH
$$
GKS2 follow-up statements
405
WWUS53 KLSX 120149 RRA
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
849 PM CDT WED MAY 11 2016
ILC013-083-MOC510-120158-
/O.CAN.KLSX.SV.W.0104.000000T0000Z-160512T0200Z/
JERSEY IL-CALHOUN IL-ST. LOUIS CITY MO-
849 PM CDT WED MAY 11 2016
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JERSEY...AND
SOUTHEASTERN CALHOUN COUNTIES AND ST. LOUIS CITY IS CANCELLED...
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED.
THEREFORE THE WARNING HAS BEEN CANCELLED.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
SOUTHWESTERN ILLINOIS...AND EAST CENTRAL MISSOURI.
LAT...LON 3877 8981 3866 9007 3866 9018 3871 9021
3873 9021 3875 9018 3877 9017 3877 9018
3875 9019 3873 9023 3888 9034 3900 9015
TIME...MOT...LOC 0148Z 265DEG 34KT 3878 9007
$$
ILC119-MOC183-189-120200-
/O.CON.KLSX.SV.W.0104.000000T0000Z-160512T0200Z/
MADISON IL-ST. LOUIS MO-ST. CHARLES MO-
849 PM CDT WED MAY 11 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR WESTERN MADISON COUNTY IN SOUTHWESTERN ILLINOIS...NORTHEASTERN
ST. LOUIS AND NORTHEASTERN ST. CHARLES COUNTIES IN EAST CENTRAL
MISSOURI...
AT 848 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SOUTH ROXANA...
MOVING EAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
LOCATIONS IMPACTED INCLUDE...
ST. LOUIS...GRANITE CITY...ALTON...COLLINSVILLE...EDWARDSVILLE...GODFREY...
GLEN CARBON...BELLEFONTAINE NEIGHBORS...WOOD RIVER...TROY...BETHALTO...
MARYVILLE...BLACK JACK...PONTOON BEACH...MADISON...RIVERVIEW...VENICE...
SPANISH LAKE...EAST ALTON AND FAIRMONT CITY.
THIS ALSO INCLUDES CONFLUENCE STATE PARK AND HORSESHOE LAKE STATE
PARK.
THIS INCLUDES INTERSTATE 55 IN ILLINOIS NEAR EXIT 23.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3877 8981 3866 9007 3866 9018 3871 9021
3873 9021 3875 9018 3877 9017 3877 9018
3875 9019 3873 9023 3888 9034 3900 9015
TIME...MOT...LOC 0148Z 265DEG 34KT 3878 9007
HAIL...0.75IN
WIND...60MPH
$$
GKS670
WWUS53 KLSX 120200
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
900 PM CDT WED MAY 11 2016
ILC119-MOC183-189-120210-
/O.EXP.KLSX.SV.W.0104.000000T0000Z-160512T0200Z/
MADISON IL-ST. LOUIS MO-ST. CHARLES MO-
900 PM CDT WED MAY 11 2016
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN MADISON COUNTY IN
SOUTHWESTERN ILLINOIS...NORTHEASTERN ST. LOUIS AND NORTHEASTERN ST.
CHARLES COUNTIES IN EAST CENTRAL MISSOURI HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE. HOWEVER HEAVY RAIN
IS STILL POSSIBLE WITH THIS THUNDERSTORM.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
SOUTHWESTERN ILLINOIS...AND EAST CENTRAL MISSOURI.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
ST LOUIS.
LAT...LON 3877 8981 3866 9007 3866 9018 3871 9021
3873 9021 3875 9018 3877 9017 3877 9018
3875 9019 3873 9023 3888 9034 3900 9015
TIME...MOT...LOC 0158Z 240DEG 44KT 3878 9007
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 7:08 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 52 min |
| May 11, 7:57 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 48 min |
| May 11, 8:28 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 8 min |
| May 11, 8:48 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 42 min |
| May 11, 9:18 PM CDT | Flash Flood Warning | LSX | Monroe, Randolph | 6 hr |
| May 11, 9:29 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 61 min |
| May 11, 9:53 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 52 min |
| May 11, 10:31 PM CDT | Severe Thunderstorm Warning | LSX | Randolph, Saint Clair, Washington | 59 min |
| May 12, 9:36 AM CDT | River Flood Warning | LSX | Jackson, Randolph | 5 days |
| May 11, 7:14 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 46 min |
| May 11, 7:19 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Jefferson, Saint Charles, Saint Louis, Warren | 41 min |
| May 11, 7:24 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 36 min |
| May 11, 7:33 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Monroe, Pike, Ralls | 42 min |
| May 11, 7:57 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Francois, Washington | 48 min |
| May 11, 7:59 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 46 min |
| May 11, 8:03 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Washington | 42 min |
| May 11, 8:15 PM CDT | Tornado Warning | LSX | Crawford, Franklin, Washington | 30 min |
| May 11, 8:45 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Jefferson, Washington | 45 min |
| May 11, 9:24 PM CDT | Flash Flood Warning | LSX | Sainte Genevieve, Saint Francois | 6 hr |
| May 11, 9:24 PM CDT | Special Weather Statement | LSX | Callaway | 51 min |
| May 11, 9:28 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway | 47 min |
| May 11, 10:14 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Montgomery, Warren | 46 min |
| May 11, 11:51 PM CDT | Flash Flood Warning | LSX | Crawford, Iron, Madison, Sainte Genevieve, Saint Francois, Washington | 6 hr |
| May 12, 9:12 AM CDT | River Flood Warning | LSX | Jefferson | 3 days |
| May 12, 10:21 AM CDT | River Flood Warning | LSX | Reynolds | 45 hr |
| May 12, 2:41 PM CDT | River Flood Warning | LSX | Jefferson, Saint Louis | 4 days |
Nearby
Severe Thunderstorm Warnings in Illinois, 2016Severe Thunderstorm Warnings in Missouri, 2016Every severe thunderstorm warning in 2016
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.