Alert archive / Illinois / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 82, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 19, 2011, 7:08 AM CDT for Saint Charles County, Saint Louis County, City of Saint Louis, Missouri; 4 counties in Illinois. It was in force for 37 min. 5 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
- Apr 19, 2011, 7:08 AM CDT (12:08 UTC)
- Expired
- Apr 19, 2011, 7:45 AM CDT
- In force
- 37 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
Counties Jersey County, IL, Macoupin County, IL, Madison County, IL, Montgomery County, IL, City of Saint Louis, MO, Saint Charles County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 67 km from the middle of the area, began a volume at 12:11 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 |
|---|---|---|---|
| Apr 19, 7:09 AM CDT | HAIL 1.5 | Granite City, IL | |
| Apr 19, 7:14 AM CDT | HAIL 1 | Edwardsville, IL | ON CAMPUS OF SIU-EDWARDSVILLE. |
| Apr 19, 7:15 AM CDT | HAIL 0.88 | Granite City, IL | PENNY TO NICKEL. |
| Apr 19, 7:24 AM CDT | HAIL 0.5 | Bethalto, IL | |
| Apr 19, 7:39 AM CDT | HAIL 0.25 | Livingston, 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 |
|---|---|---|---|
| Apr 19, 3:11 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 0.1 hours before the alert went out and 186 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 453 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 189 m²/s²
- 0-3 km storm-relative helicity
- 345 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
015 WUUS53 KLSX 191208 SVRLSX ILC083-117-119-135-MOC183-189-510-191245- /O.NEW.KLSX.SV.W.0082.110419T1208Z-110419T1245Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 708 AM CDT TUE APR 19 2011 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN JERSEY COUNTY IN SOUTHWEST ILLINOIS... SOUTHERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS... MADISON COUNTY IN SOUTHWEST ILLINOIS... SOUTHWESTERN MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS... NORTHEASTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI... NORTHEASTERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI... NORTHERN ST. LOUIS CITY IN EAST CENTRAL MISSOURI... * UNTIL 745 AM CDT * AT 701 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL... AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR BLACK JACK. A SECOND SEVERE THUNDERSTORM WAS LOCATED NEAR EDWARDSVILLE. THESE STORMS ARE MOVING NORTHEAST AT 50 MPH. * LOCATIONS IMPACTED INCLUDE... PONTOON BEACH...ALTON...GODFREY...COLLINSVILLE...WOOD RIVER... MARYVILLE...GLEN CARBON...BETHALTO...EDWARDSVILLE...TROY... HIGHLAND...STAUNTON...HARTFORD...ROXANA...BRIGHTON...DORSEY... CARPENTER...ST. JACOB...PRAIRIETOWN AND BUNKER HILL. 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. THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 3866 8962 3865 9037 3902 9035 3912 8966 TIME...MOT...LOC 1206Z 243DEG 43KT 3884 9022 WIND...HAIL 60MPH 1.75IN $$ BRITT
2 follow-up statements
275
WWUS53 KLSX 191222
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
722 AM CDT TUE APR 19 2011
ILC083-MOC510-191231-
/O.CAN.KLSX.SV.W.0082.000000T0000Z-110419T1245Z/
JERSEY IL-ST. LOUIS CITY MO-
722 AM CDT TUE APR 19 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ST. LOUIS CITY AND
SOUTHEASTERN JERSEY COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA. ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 AM CDT.
LAT...LON 3866 9018 3871 9021 3877 9017 3877 9018
3875 9022 3900 9028 3900 9024 3900 9015
3902 9015 3912 8966 3866 8962
TIME...MOT...LOC 1221Z 250DEG 37KT 3889 9004
$$
ILC117-119-135-MOC183-189-191245-
/O.CON.KLSX.SV.W.0082.000000T0000Z-110419T1245Z/
MONTGOMERY IL-MADISON IL-MACOUPIN IL-ST. LOUIS MO-ST. CHARLES MO-
722 AM CDT TUE APR 19 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EXTREME
NORTHEASTERN ST. CHARLES...EXTREME NORTHEASTERN ST. LOUIS...SOUTHERN
MACOUPIN...MADISON AND SOUTHWESTERN MONTGOMERY COUNTIES UNTIL 745 AM
CDT...
AT 716 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...
AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
WOOD RIVER...MOVING EAST AT 45 MPH.
LOCATIONS IMPACTED INCLUDE...
EDWARDSVILLE...TROY...HIGHLAND...STAUNTON...DORSEY...CARPENTER...
PRAIRIETOWN...BUNKER HILL...ST. JACOB...MARINE...WORDEN...
WILSONVILLE...ALHAMBRA...LIVINGSTON...MOUNT OLIVE...KUHN...FRUIT...
HAMEL...PRUETT AND KAUFMAN.
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.
THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
&&
LAT...LON 3866 9018 3871 9021 3877 9017 3877 9018
3875 9022 3900 9028 3900 9024 3900 9015
3902 9015 3912 8966 3866 8962
TIME...MOT...LOC 1221Z 250DEG 37KT 3889 9004
WIND...HAIL 60MPH 1.50IN
$$
BRITT830 WWUS53 KLSX 191231 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 731 AM CDT TUE APR 19 2011 MOC183-189-191240- /O.CAN.KLSX.SV.W.0082.000000T0000Z-110419T1245Z/ ST. LOUIS MO-ST. CHARLES MO- 731 AM CDT TUE APR 19 2011 ...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHEASTERN ST. CHARLES AND NORTHEASTERN ST. LOUIS COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. STRONG STORMS ARE STILL POSSIBLE THIS MORNING...AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 AM CDT. LAT...LON 3866 8962 3876 9009 3902 9015 3912 8966 TIME...MOT...LOC 1230Z 258DEG 39KT 3889 8988 $$ ILC117-119-135-191245- /O.CON.KLSX.SV.W.0082.000000T0000Z-110419T1245Z/ MONTGOMERY IL-MADISON IL-MACOUPIN IL- 731 AM CDT TUE APR 19 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN MACOUPIN...MADISON AND SOUTHWESTERN MONTGOMERY COUNTIES UNTIL 745 AM CDT... AT 726 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. THIS STORM WAS LOCATED NEAR CARPENTER...OR 6 MILES EAST OF BETHALTO...MOVING EAST AT 45 MPH. LOCATIONS IMPACTED INCLUDE... STAUNTON...HIGHLAND...WORDEN...ST. JACOB...MARINE...WILSONVILLE... LIVINGSTON...ALHAMBRA...MOUNT OLIVE...PRUETT...HAMEL...KAUFMAN... WILLIAMSON...WHITE CITY...GRANTFORK AND NEW DOUGLAS. 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 3866 8962 3876 9009 3902 9015 3912 8966 TIME...MOT...LOC 1230Z 258DEG 39KT 3889 8988 WIND...HAIL <50MPH 1.50IN $$ BRITT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 2:51 AM CDT | Severe Thunderstorm Warning | LSX | Cole, Moniteau, Osage | 39 min |
| Apr 19, 3:19 AM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Moniteau, Osage | 41 min |
| Apr 19, 3:26 AM CDT | Severe Thunderstorm Warning | LSX | Callaway, Gasconade, Osage | 49 min |
| Apr 19, 3:39 AM CDT | Severe Thunderstorm Warning | LSX | Moniteau | 21 min |
| Apr 19, 3:57 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Cole, Franklin, Gasconade and 4 more | 48 min |
| Apr 19, 4:35 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 40 min |
| Apr 19, 4:43 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Montgomery, Warren | 47 min |
| Apr 19, 4:58 AM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Washington | 32 min |
| Apr 19, 5:23 AM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Saint Charles, Warren, Washington | 37 min |
| Apr 19, 5:43 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Charles, Saint Louis, Washington | 47 min |
| Apr 19, 6:21 AM CDT | Areal Flood Advisory | LSX | Jefferson, Saint Charles, Saint Louis, City of Saint Louis | 3 hr |
| Apr 19, 6:22 AM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 38 min |
| Apr 19, 6:26 AM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis, City of Saint Louis | 49 min |
| Apr 19, 8:05 AM CDT | River Flood Warning | LSX | Saint Charles | 30 hr |
| Apr 19, 11:06 AM CDT | River Flood Warning | LSX | Lincoln | 19 days |
| Apr 19, 11:33 AM CDT | River Flood Warning | LSX | Jefferson, Saint Louis | 30 days |
| Apr 19, 3:46 PM CDT | Severe Thunderstorm Warning | LSX | Pike, Ralls | 44 min |
| Apr 19, 3:48 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Montgomery, Pike | 42 min |
| Apr 19, 3:54 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Osage | 51 min |
| Apr 19, 3:59 PM CDT | Tornado Warning | LSX | Pike | 46 min |
| Apr 19, 4:24 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Franklin, Gasconade, Osage | 51 min |
| Apr 19, 4:31 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Montgomery, Warren | 44 min |
| Apr 19, 4:31 PM CDT | Tornado Warning | LSX | Pike | 44 min |
| Apr 19, 4:41 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 49 min |
| Apr 19, 5:01 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Saint Charles, Warren | 44 min |
| Apr 19, 5:13 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Montgomery, Saint Charles, Warren | 47 min |
| Apr 19, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 47 min |
| Apr 19, 5:44 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 34 min |
| Apr 19, 5:56 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles, Warren | 34 min |
| Apr 19, 5:58 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade | 32 min |
| Apr 19, 6:12 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles, Saint Louis, Warren | 48 min |
| Apr 19, 6:14 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Warren | 31 min |
| Apr 19, 6:15 PM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 60 min |
| Apr 19, 6:30 PM CDT | Flash Flood Warning | LSX | Saint Charles | 3 hr |
| Apr 19, 6:37 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison, Reynolds, Saint Francois, Washington | 53 min |
| Apr 19, 6:45 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles | 30 min |
| Apr 19, 6:51 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 39 min |
| Apr 19, 6:56 PM CDT | Areal Flood Advisory | LSX | Franklin, Warren | 5 hr |
| Apr 19, 6:56 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis, City of Saint Louis | 64 min |
| Apr 19, 5:14 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Pike | 31 min |
| Apr 19, 6:56 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 49 min |
| Apr 19, 7:36 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Macoupin, Madison, Montgomery | 39 min |
| Apr 19, 8:07 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 38 min |
| Apr 19, 8:25 AM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 29 min |
| Apr 19, 8:41 AM CDT | Severe Thunderstorm Warning | LSX | Fayette | 34 min |
| Apr 19, 11:18 AM CDT | River Flood Warning | LSX | Calhoun, Greene, Jersey | 85 days |
| Apr 19, 4:18 PM CDT | Tornado Warning | LSX | Calhoun, Greene, Pike | 42 min |
| Apr 19, 4:59 PM CDT | Tornado Warning | LSX | Greene, Pike | 46 min |
| Apr 19, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin | 47 min |
| Apr 19, 5:36 PM CDT | Tornado Warning | LSX | Macoupin | 39 min |
| Apr 19, 5:42 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 34 min |
| Apr 19, 6:01 PM CDT | Tornado Warning | LSX | Montgomery | 44 min |
| Apr 19, 6:05 PM CDT | Tornado Warning | LSX | Macoupin, Montgomery | 40 min |
| Apr 19, 6:14 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison | 61 min |
| Apr 19, 6:31 PM CDT | Tornado Warning | LSX | Montgomery | 27 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2011Severe Thunderstorm Warnings in Missouri, 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.