Alert archive / Missouri / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 69, NWS St. Louis, MO

May 11, 2016Saint Charles County, Saint Louis County, City of Saint Louis, Missouri; Madison County, Saint Clair County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at May 11, 2016, 1:08 PM CDT for Saint Charles County, Saint Louis County, City of Saint Louis, Missouri; Madison County, Saint Clair County, Illinois. It was in force for 52 min. 34 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: May 11, 2016, 1:08 PM CDT (18:08 UTC)
Expired: May 11, 2016, 2:00 PM CDT
In force: 52 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 2.75 in
Wind: 60.0 mph

Counties Madison County, IL, Saint Clair County, IL, City of Saint Louis, MO, Saint Charles County, MO, Saint Louis County, MO

The radar

The St Louis radar (KLSX), 20 km from the middle of the area, began a volume at 18:11 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
May 11, 1:08 PM CDT	HAIL 2	Cottleville, MO
May 11, 1:08 PM CDT	HAIL 2	St. Peters, MO	KISKER RD AT 94
May 11, 1:09 PM CDT	HAIL 1	St. Charles, MO	I-70 AND ZUMBEHL
May 11, 1:10 PM CDT	HAIL 2	Harvester, MO
May 11, 1:13 PM CDT	HAIL 1	2 W St. Charles, MO	NEAR EXIT 225 ON I-70.
May 11, 1:13 PM CDT	HAIL 1.75	St. Charles, MO	HIGHWAY 370 ADN ELM ST.
May 11, 1:14 PM CDT	HAIL 1.75	St. Peters, MO	HWY 94 AT HWY 364
May 11, 1:20 PM CDT	HAIL 1.25	Chesterfield, MO
May 11, 1:20 PM CDT	HAIL 3	3 Sw St. Charles, MO	AT THE ST. PETERS LINE WITH ST. CHARLES
May 11, 1:25 PM CDT	HAIL 1.75	Maryland Heights, MO
May 11, 1:26 PM CDT	HAIL 0.7	Town And Country, MO
May 11, 1:26 PM CDT	HAIL 1.75	Maryland Heights, MO
May 11, 1:27 PM CDT	HAIL 1	Chesterfield, MO
May 11, 1:27 PM CDT	HAIL 1	Maryland Heights, MO
May 11, 1:30 PM CDT	TSTM WND DMG	Bridgeton, MO	TREE FELL ONTO A CAR CAUSING MAJOR DAMAGE.
May 11, 1:30 PM CDT	TSTM WND DMG	St. Ann, MO	TREE DOWN ON A HOUSE.
May 11, 1:30 PM CDT	TSTM WND DMG	St. Ann, MO	TREE DOWN ON A HOUSE AT INTERSECTION OF ST. HENRY AND ST. SEBASTIAN LANES.
May 11, 1:30 PM CDT	TSTM WND DMG	St. Ann, MO	TREE DOWN ON A HOUSE AT INTERSECTION OF ST. HENRY AND ST. SEBASTIAN LANES. ANOTHER TREE BLOWN DOWN ON A HOUSE AT THE INTERSECTION OF ASHBY ROAD AND SAN CARLOS LANE.
May 11, 1:36 PM CDT	HAIL 0.5	Bridgeton, MO
May 11, 1:38 PM CDT	TSTM WND DMG	1 Ese Olivette, MO	LARGE TREE SNAPPED OFF AT GROUND NEAR INTERSECTION OF DELMAR AND I-170.
May 11, 1:38 PM CDT	TSTM WND DMG	Ferguson, MO	TREE DOWN IN FERGUSON BLOCKING THE ROAD. TIME ESTIMATED FROM RADAR.
May 11, 1:38 PM CDT	TSTM WND DMG	Richmond Heights, MO	TREE DAMAGE. POWER OUTAGE. TIME ESTIMATED FROM RADAR.
May 11, 1:39 PM CDT	TSTM WND DMG	2 Ene Clayton, MO	TREE DOWN IN SKINKER-DEBALIVIERE NEIGHBORHOOD.
May 11, 1:39 PM CDT	HAIL 1	Bridgeton, MO	HAIL UP TO QUARTERS
May 11, 1:40 PM CDT	TSTM WND DMG	Overland, MO	LARGE TREES AND SEVERAL POWER LINES BLOWN DOWN.
May 11, 1:40 PM CDT	TSTM WND DMG	University City, MO	TREE UPROOTED
May 11, 1:40 PM CDT	HAIL 1.25	Maryland Heights, MO
May 11, 1:41 PM CDT	TSTM WND DMG	St. Louis, MO	TREE DOWN IN SKINKER-DEBALIVIERE NEIGHBORHOOD
May 11, 1:43 PM CDT	HAIL 1.75	University City, MO	IN THE DELMAR LOOP AREA
May 11, 1:45 PM CDT	HAIL 1	Hazelwood, MO
May 11, 1:45 PM CDT	HAIL 1.75	2 N University City, MO
May 11, 1:49 PM CDT	HAIL 1	1 N Dellwood, MO
May 11, 1:55 PM CDT	TSTM WND DMG	1 Ne Maplewood, MO	LARGE TREE BLOWN ONTO 3 HOMES IN 6900 BLOCK OF DALE AVE. CAUSING DAMAGE. SOUTH OF FOREST PARK.
May 11, 1:55 PM CDT	TSTM WND DMG	1 N Spanish Lake, MO	LARGE TREE BLOWN DOWN AT SPANISH LAKE PARK...BLOCKING ROADWAY.

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
May 11, 12:10 PM CDT	Severe Thunderstorm Watch	SPC	12 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 6.1 hours before the alert went out and 227 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: 905 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

302 
WUUS53 KLSX 111808
SVRLSX
ILC119-163-MOC183-189-510-111900-
/O.NEW.KLSX.SV.W.0069.160511T1808Z-160511T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
108 PM CDT WED MAY 11 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN ST. CLAIR COUNTY IN SOUTHWESTERN ILLINOIS...
  WESTERN MADISON COUNTY IN SOUTHWESTERN ILLINOIS...
  ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
  NORTHEASTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
  ST. LOUIS CITY IN EAST CENTRAL MISSOURI...

* UNTIL 200 PM CDT

* AT 108 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER WELDON
  SPRING...MOVING EAST AT 25 MPH.

  THIS IS A VERY DANGEROUS STORM. 

  HAZARD...BASEBALL SIZE HAIL AND 60 MPH WIND GUSTS. 

  SOURCE...TRAINED WEATHER SPOTTERS. 

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE SEVERELY INJURED. 
           EXPECT SHATTERED WINDOWS...EXTENSIVE DAMAGE TO ROOFS...
           SIDING...AND VEHICLES. 

* LOCATIONS IMPACTED INCLUDE...
  ST. LOUIS...ST. CHARLES...ST. PETERS...FLORISSANT...CHESTERFIELD...
  WILDWOOD...UNIVERSITY CITY...BALLWIN...GRANITE CITY...ALTON...KIRKWOOD...
  MARYLAND HEIGHTS...EAST ST. LOUIS...HAZELWOOD...COLLINSVILLE...WEBSTER
  GROVES...FERGUSON...MANCHESTER...GODFREY AND CREVE COEUR.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 44 IN MISSOURI NEAR EXIT 277.
 INTERSTATE 70 IN MISSOURI BETWEEN EXITS 220 AND 231.

THIS ALSO INCLUDES  BABLER MEMORIAL STATE PARK...SCOTT JOPLIN HISTORIC
SITE...CASTLEWOOD STATE PARK...CONFLUENCE STATE PARK...FIRST MISSOURI
STATE CAPITOL HISTORIC SITE...AND HORSESHOE LAKE STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE IMMEDIATELY FOR LARGE DESTRUCTIVE
HAIL CAPABLE OF PRODUCING SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD
MOVE TO SHELTER INSIDE A STRONG BUILDING... AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 3852 9073 3886 9064 3896 9010 3860 9006
TIME...MOT...LOC 1808Z 262DEG 23KT 3871 9062 

HAIL...2.75IN
WIND...60MPH
 
$$

GLASS

2 follow-up statements

039 
WWUS53 KLSX 111830
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
130 PM CDT WED MAY 11 2016

ILC119-163-MOC183-189-510-111900-
/O.CON.KLSX.SV.W.0069.000000T0000Z-160511T1900Z/
ST. CLAIR IL-MADISON IL-ST. LOUIS MO-ST. CHARLES MO-
ST. LOUIS CITY MO-
130 PM CDT WED MAY 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT
FOR NORTHWESTERN ST. CLAIR AND WESTERN MADISON COUNTIES IN
SOUTHWESTERN ILLINOIS...ST. LOUIS...AND NORTHEASTERN ST. CHARLES
COUNTIES IN EAST CENTRAL MISSOURI AND ST. LOUIS CITY...

AT 130 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER CREVE COEUR...
MOVING EAST AT 25 MPH.

HAZARD...TENNIS BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

SOURCE...TRAINED WEATHER SPOTTERS. THIS STORM HAS A HISTORY OF HAIL
         TO THE SIZE OF BASEBALLS.

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
         DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT WIND 
         DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
ST. LOUIS...ST. CHARLES...FLORISSANT...CHESTERFIELD...WILDWOOD...
UNIVERSITY CITY...BALLWIN...GRANITE CITY...ALTON...KIRKWOOD...MARYLAND
HEIGHTS...EAST ST. LOUIS...HAZELWOOD...COLLINSVILLE...WEBSTER GROVES...
FERGUSON...MANCHESTER...GODFREY...CREVE COEUR AND OVERLAND.

THIS ALSO INCLUDES  SCOTT JOPLIN HISTORIC SITE...CASTLEWOOD STATE
PARK...CONFLUENCE STATE PARK...FIRST MISSOURI STATE CAPITOL HISTORIC
SITE...AND HORSESHOE LAKE STATE PARK.
 
THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 44 IN MISSOURI NEAR EXIT 277.
 INTERSTATE 70 IN MISSOURI BETWEEN EXITS 228 AND 231.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE IMMEDIATELY FOR LARGE DESTRUCTIVE
HAIL CAPABLE OF PRODUCING SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD
MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3852 9073 3890 9043 3896 9010 3860 9006
TIME...MOT...LOC 1830Z 263DEG 22KT 3870 9044 

HAIL...2.50IN
WIND...60MPH
 
$$

GLASS

845 
WWUS53 KLSX 111846
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
146 PM CDT WED MAY 11 2016

ILC119-163-MOC183-189-510-111900-
/O.CON.KLSX.SV.W.0069.000000T0000Z-160511T1900Z/
ST. CLAIR IL-MADISON IL-ST. LOUIS MO-ST. CHARLES MO-
ST. LOUIS CITY MO-
146 PM CDT WED MAY 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT
FOR NORTHWESTERN ST. CLAIR AND WESTERN MADISON COUNTIES IN
SOUTHWESTERN ILLINOIS...ST. LOUIS...AND NORTHEASTERN ST. CHARLES
COUNTIES IN EAST CENTRAL MISSOURI AND ST. LOUIS CITY...

AT 146 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER BELLERIVE...
MOVING EAST AT 25 MPH.

HAZARD...TWO INCH HAIL AND 60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
         DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT WIND 
         DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
ST. LOUIS...FLORISSANT...CHESTERFIELD...WILDWOOD...UNIVERSITY CITY...
BALLWIN...GRANITE CITY...ALTON...KIRKWOOD...MARYLAND HEIGHTS...EAST ST.
LOUIS...HAZELWOOD...COLLINSVILLE...WEBSTER GROVES...FERGUSON...MANCHESTER...
GODFREY...CREVE COEUR...OVERLAND AND CLAYTON.

THIS ALSO INCLUDES  SCOTT JOPLIN HISTORIC SITE...CASTLEWOOD STATE
PARK...CONFLUENCE STATE PARK...AND HORSESHOE LAKE STATE PARK.
 
THIS INCLUDES INTERSTATE 70 IN MISSOURI NEAR EXIT 231.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 3853 9067 3891 9035 3896 9010 3860 9006
TIME...MOT...LOC 1846Z 262DEG 23KT 3871 9031 

HAIL...2.00IN
WIND...60MPH
 
$$

GLASS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 3:19 AM CDT	Dense Fog Advisory	LSX	Jefferson, Lincoln, Madison, Pike, Saint Charles, Sainte Genevieve and 3 more	6 hr
May 11, 10:08 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone	52 min
May 11, 10:25 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway	50 min
May 11, 10:52 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Montgomery, Pike	38 min
May 11, 11:24 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike	51 min
May 11, 12:26 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, Warren	49 min
May 11, 12:29 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Washington	46 min
May 11, 12:47 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Louis	28 min
May 11, 1:12 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis	48 min
May 11, 1:51 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	54 min
May 11, 1:55 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis	65 min
May 11, 2:12 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve	63 min
May 11, 3:11 PM CDT	Severe Thunderstorm Warning	LSX	Saint Francois, Washington	49 min
May 11, 3:15 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois	45 min
May 11, 3:52 PM CDT	Flash Flood Warning	LSX	Jefferson, Sainte Genevieve	4 hr
May 11, 3:57 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve	63 min
May 11, 4:05 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois, Washington	40 min
May 11, 4:45 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois, Washington	60 min
May 11, 5:16 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Montgomery, Pike, Ralls	44 min
May 11, 5:18 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	27 min
May 11, 5:18 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Montgomery, Osage, Warren	42 min
May 11, 5:26 PM CDT	Flash Flood Warning	LSX	Sainte Genevieve, Saint Francois	4 hr
May 11, 5:35 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Montgomery	40 min
May 11, 5:45 PM CDT	Severe Thunderstorm Warning	LSX	Saint Francois, Washington	45 min
May 11, 5:56 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lincoln, Montgomery, Pike, Ralls	64 min
May 11, 6:12 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Lincoln, Montgomery, Warren	48 min
May 11, 6:29 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Sainte Genevieve, Saint Francois, Washington	46 min
May 11, 6:42 PM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	48 min
May 11, 6:50 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike, Saint Charles, Warren	40 min
May 11, 2:32 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Madison, Washington	43 min
May 11, 3:02 PM CDT	Severe Thunderstorm Warning	LSX	Fayette, Marion	43 min
May 11, 3:13 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Washington	47 min
May 11, 3:43 PM CDT	Severe Thunderstorm Warning	LSX	Fayette, Marion	33 min
May 11, 3:59 PM CDT	Severe Thunderstorm Warning	LSX	Randolph, Saint Clair, Washington	19 min
May 11, 5:23 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	52 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2016 Severe Thunderstorm Warnings in Illinois, 2016 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.