Alert archive / Missouri / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 101, NWS St. Louis, MO

April 19, 2011Calhoun County, Illinois; 4 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 19, 2011, 6:12 PM CDT for Calhoun County, Illinois; 4 counties in Missouri. It was in force for 48 min. 27 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, 6:12 PM CDT (23:12 UTC)
Expired: Apr 19, 2011, 7:00 PM CDT
In force: 48 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.75 in
Wind: 50.0 mph

Counties Calhoun County, IL, Franklin County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 16 km from the middle of the area, began a volume at 23:15 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, 6:12 PM CDT	HAIL 1	Dutzow, MO
Apr 19, 6:18 PM CDT	HAIL 0.75	New Melle, MO
Apr 19, 6:22 PM CDT	HAIL 0.75	O'Fallon, MO
Apr 19, 6:22 PM CDT	HAIL 0.75	Washington, MO
Apr 19, 6:24 PM CDT	HAIL 0.5	St. Peters, MO
Apr 19, 6:25 PM CDT	HAIL 0.7	St. Peters, MO
Apr 19, 6:26 PM CDT	HAIL 0.7	St. Peters, MO
Apr 19, 6:29 PM CDT	TSTM WND GST 68	St. Charles, MO
Apr 19, 6:29 PM CDT	HAIL 0.88	St. Charles, MO
Apr 19, 6:30 PM CDT	HAIL 0.75	10 Wsw St. Charles, MO	MINOR LEAF DAMAGE
Apr 19, 6:30 PM CDT	HAIL 1	St. Charles, MO
Apr 19, 6:32 PM CDT	HAIL 0.75	1 S Cottleville, MO
Apr 19, 6:35 PM CDT	HAIL 0.5	St. Peters, MO	HAIL OBSERVED ON JUNGERMANN ROAD
Apr 19, 6:41 PM CDT	TSTM WND GST 42	Weldon Spring, MO
Apr 19, 6:41 PM CDT	HAIL 0.25	Weldon Spring, MO
Apr 19, 6:48 PM CDT	HAIL 0.7	3 W Florissant, MO
Apr 19, 6:52 PM CDT	HAIL 0.25	Florissant, MO
Apr 19, 6:52 PM CDT	HAIL 1	St. Charles, MO	5TH STREED AND ARENA PARKWAY
Apr 19, 6:54 PM CDT	HAIL 1	Hazelwood, MO
Apr 19, 6:56 PM CDT	HAIL 1	Florissant, MO	HOWDERSHELL AND DUNN ROAD
Apr 19, 6:58 PM CDT	HAIL 0.7	Maryland Heights, MO
Apr 19, 6:58 PM CDT	HAIL 0.75	Hazelwood, MO
Apr 19, 6:59 PM CDT	HAIL 0.88	Bridgeton, MO
Apr 19, 7:01 PM CDT	HAIL 0.88	Florissant, MO
Apr 19, 7:06 PM CDT	HAIL 0.75	Florissant, MO
Apr 19, 7:09 PM CDT	TSTM WND GST 50	Florissant, MO
Apr 19, 7:09 PM CDT	HAIL 0.5	Florissant, MO

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, 1:00 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.2 hours before the alert went out and 230 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

272 
WUUS53 KLSX 192312
SVRLSX
ILC013-MOC071-183-189-219-200000-
/O.NEW.KLSX.SV.W.0101.110419T2312Z-110420T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
612 PM CDT TUE APR 19 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CALHOUN COUNTY IN SOUTHWEST ILLINOIS...
  NORTHEASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
  NORTHERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHEASTERN WARREN COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 700 PM CDT

* AT 611 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR DARDENNE PRAIRIE...AND MOVING EAST AT 65
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  ST. PAUL...O'FALLON...WELDON SPRING...COTTLEVILLE...ELLISVILLE...
  CLARKSON VALLEY...CHESTERFIELD...BALLWIN...ST. PETERS...
  MANCHESTER...TOWN AND COUNTRY...ST. CHARLES...MARYLAND HEIGHTS...
  CREVE COEUR...BRIDGETON...OLIVETTE...ST. ANN...OVERLAND...WOODSON
  TERRACE AND ST. JOHN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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.

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 A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3854 9061 3851 9105 3886 9102 3888 9081
      3889 9081 3893 9073 3891 9071 3893 9069
      3894 9067 3895 9068 3900 9057 3896 9054
      3897 9049 3880 9012
TIME...MOT...LOC 2312Z 252DEG 54KT 3876 9073
WIND...HAIL <50MPH 1.75IN

$$

GLASS

3 follow-up statements

701 
WWUS53 KLSX 192332
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
632 PM CDT TUE APR 19 2011

ILC013-MOC071-183-189-219-200000-
/O.CON.KLSX.SV.W.0101.000000T0000Z-110420T0000Z/
CALHOUN IL-FRANKLIN MO-ST. LOUIS MO-ST. CHARLES MO-WARREN MO-
632 PM CDT TUE APR 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
WARREN...ST. CHARLES...NORTHERN ST. LOUIS...NORTHEASTERN FRANKLIN AND
SOUTHERN CALHOUN COUNTIES UNTIL 700 PM CDT...

AT 628 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LARGE SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  
THIS STORM WAS LOCATED FROM DARDENNE PRAIRIE TO ST. CHARLES...MOVING 
NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  O'FALLON...ST. PAUL...ELLISVILLE...WELDON SPRING...CLARKSON
  VALLEY...COTTLEVILLE...BALLWIN...CHESTERFIELD...MANCHESTER...ST.
  PETERS...TOWN AND COUNTRY...ST. CHARLES...MARYLAND HEIGHTS...CREVE
  COEUR...OLIVETTE...BRIDGETON...ST. ANN...OVERLAND...WOODSON TERRACE
  AND ST. JOHN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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.

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 A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3854 9061 3851 9105 3886 9102 3888 9081
      3889 9081 3893 9073 3891 9071 3893 9069
      3894 9067 3895 9068 3900 9057 3896 9054
      3897 9049 3880 9012
TIME...MOT...LOC 2332Z 247DEG 33KT 3874 9070
WIND...HAIL <50MPH 1.75IN

$$

GLASS

474 
WWUS53 KLSX 192343
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
643 PM CDT TUE APR 19 2011

ILC013-MOC219-192353-
/O.CAN.KLSX.SV.W.0101.000000T0000Z-110420T0000Z/
CALHOUN IL-WARREN MO-
643 PM CDT TUE APR 19 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WARREN AND
SOUTHERN CALHOUN COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3854 9061 3855 9096 3878 9090 3888 9055
      3895 9048 3880 9012
TIME...MOT...LOC 2343Z 251DEG 50KT 3874 9059

$$

MOC071-183-189-200000-
/O.CON.KLSX.SV.W.0101.000000T0000Z-110420T0000Z/
FRANKLIN MO-ST. LOUIS MO-ST. CHARLES MO-
643 PM CDT TUE APR 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ST. CHARLES...
NORTHERN ST. LOUIS AND NORTHEASTERN FRANKLIN COUNTIES UNTIL 700 PM
CDT...

AT 641 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LARGE SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE 
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED NEAR WELDON SPRING...MOVING EAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  TOWN AND COUNTRY...ST. CHARLES...MARYLAND HEIGHTS...CREVE COEUR...
  BRIDGETON...OLIVETTE...ST. ANN...OVERLAND...WOODSON TERRACE...ST.
  JOHN...HAZELWOOD...BEL-RIDGE...BERKELEY...KINLOCH...NORMANDY...COOL
  VALLEY...FLORISSANT...FERGUSON...DELLWOOD AND BLACK JACK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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.

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 A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3854 9061 3855 9096 3878 9090 3888 9055
      3895 9048 3880 9012
TIME...MOT...LOC 2343Z 251DEG 50KT 3874 9059
WIND...HAIL 60MPH 1.00IN

$$

GLASS

158 
WWUS53 KLSX 192351
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
651 PM CDT TUE APR 19 2011

MOC071-183-189-200000-
/O.CON.KLSX.SV.W.0101.000000T0000Z-110420T0000Z/
FRANKLIN MO-ST. LOUIS MO-ST. CHARLES MO-
651 PM CDT TUE APR 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ST. CHARLES...
NORTHERN ST. LOUIS AND NORTHEASTERN FRANKLIN COUNTIES UNTIL 700 PM
CDT...

AT 649 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR ST.
CHARLES...MOVING EAST AT 55 MPH.

IN ADDITION...QUARTER SIZE HAIL WAS REPORTED JUST SOUTH OF DOWNTOWN 
ST. CHARLES AT 650 PM.

LOCATIONS IMPACTED INCLUDE...
  BRIDGETON...OLIVETTE...ST. ANN...OVERLAND...WOODSON TERRACE...ST.
  JOHN...HAZELWOOD...BEL-RIDGE...BERKELEY...KINLOCH...NORMANDY...COOL
  VALLEY...FLORISSANT...FERGUSON...DELLWOOD...BLACK JACK...SPANISH
  LAKE...BELLEFONTAINE NEIGHBORS AND ORCHARD FARMS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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.

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 A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3854 9061 3855 9096 3878 9090 3888 9055
      3895 9048 3880 9012
TIME...MOT...LOC 2351Z 251DEG 50KT 3878 9045
WIND...HAIL 60MPH 1.00IN

$$

GLASS

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 19, 4:35 AM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Pike	40 min
Apr 19, 5:14 AM CDT	Severe Thunderstorm Warning	LSX	Greene, Pike	31 min
Apr 19, 6:21 AM CDT	Areal Flood Advisory	LSX	Madison, Monroe, Saint Clair	3 hr
Apr 19, 6:22 AM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph, Saint Clair	38 min
Apr 19, 6:26 AM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	49 min
Apr 19, 6:56 AM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	49 min
Apr 19, 7:08 AM CDT	Severe Thunderstorm Warning	LSX	Jersey, Macoupin, Madison, Montgomery	37 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, 3:46 PM CDT	Severe Thunderstorm Warning	LSX	Pike	44 min
Apr 19, 3:59 PM CDT	Tornado Warning	LSX	Pike	46 min
Apr 19, 4:18 PM CDT	Tornado Warning	LSX	Calhoun, Greene, Pike	42 min
Apr 19, 4:31 PM CDT	Tornado Warning	LSX	Calhoun	44 min
Apr 19, 4:41 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey, Macoupin, Madison	49 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, 5:28 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun	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, 5:44 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Jersey	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
Apr 19, 6:56 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Macoupin, Madison, Montgomery	64 min
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, 4:43 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, 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, 3:48 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, 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, 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, 5:56 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, 6:14 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

Nearby

Severe Thunderstorm Warnings in Missouri, 2011 Severe Thunderstorm Warnings in Illinois, 2011 Every 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.