Alert archive / Illinois / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 72, NWS St. Louis, MO

May 11, 2016Saint Louis County, Missouri; Monroe County, Saint Clair County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at May 11, 2016, 1:55 PM CDT for Saint Louis County, Missouri; Monroe County, Saint Clair County, Illinois. It was in force for 65 min. 12 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, 1:55 PM CDT (18:55 UTC)
Expired: May 11, 2016, 3:00 PM CDT
In force: 65 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 2.0 in
Wind: 60.0 mph

Counties Monroe County, IL, Saint Clair County, IL, Saint Louis County, MO

The radar

The St Louis radar (KLSX), 52 km from the middle of the area, began a volume at 18:57 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, 1:55 PM CDT	HAIL 1	New Handover, IL
May 11, 1:58 PM CDT	HAIL 1	1 N Columbia, IL	NORTHERN SIDE OF TOWN.
May 11, 2:10 PM CDT	HAIL 0.75	New Athens, IL
May 11, 2:10 PM CDT	HAIL 1	New Athens, IL
May 11, 2:14 PM CDT	HAIL 0.5	Millstadt, IL
May 11, 2:14 PM CDT	HAIL 1	Millstadt, IL
May 11, 2:24 PM CDT	HAIL 1	Waterloo, IL	ESTIMATED WIND GUSTS OF 35-40 MPH
May 11, 2:34 PM CDT	HAIL 0.5	O'Fallon, IL
May 11, 2:35 PM CDT	HAIL 1	Shiloh, IL
May 11, 2:39 PM CDT	HAIL 1	Maeystown, IL
May 11, 2:40 PM CDT	TSTM WND DMG	Summerfield, IL	LARGE TREE DOWN IN SUMMERFIELD. PHOTO FROM TWITTER. TIME CONSISTENT WITH RADAR.
May 11, 2:48 PM CDT	HAIL 1	Shiloh, 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
May 11, 12:10 PM CDT	Severe Thunderstorm Watch	SPC	12 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 6.9 hours before the alert went out and 235 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.

592 
WUUS53 KLSX 111855
SVRLSX
ILC133-163-MOC189-112000-
/O.NEW.KLSX.SV.W.0072.160511T1855Z-160511T2000Z/

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

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ST. CLAIR COUNTY IN SOUTHWESTERN ILLINOIS...
  MONROE COUNTY IN SOUTHWESTERN ILLINOIS...
  SOUTH CENTRAL ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 300 PM CDT

* AT 154 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR COLUMBIA...
  MOVING EAST AT 25 MPH.

  HAZARD...TWO INCH HAIL AND 60 MPH WIND GUSTS. THIS STORM HAS A
           HISTORY OF LARGE HAIL.

  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...
  BELLEVILLE...O'FALLON...EAST ST. LOUIS...FAIRVIEW HEIGHTS...CAHOKIA...
  SWANSEA...SHILOH...WATERLOO...COLUMBIA...MASCOUTAH...CENTREVILLE...
  LEBANON...FREEBURG...DUPO...MILLSTADT...RED BUD...NEW BADEN...SCOTT AFB...
  LEMAY AND OAKVILLE.

THIS INCLUDES INTERSTATE 64 IN ILLINOIS BETWEEN EXITS 12 AND 27.
 
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.

&&

LAT...LON 3821 9035 3822 9036 3856 9032 3856 9030
      3855 9027 3853 9027 3853 9026 3857 9022
      3865 8971 3823 8971
TIME...MOT...LOC 1854Z 261DEG 22KT 3840 9020 

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

GLASS

2 follow-up statements

737 
WWUS53 KLSX 111928
SVSLSX

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

MOC189-111937-
/O.CAN.KLSX.SV.W.0072.000000T0000Z-160511T2000Z/
ST. LOUIS MO-
228 PM CDT WED MAY 11 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ST. LOUIS COUNTY
IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FOR
SOUTHWESTERN ILLINOIS...AND EAST CENTRAL MISSOURI.

LAT...LON 3821 9035 3822 9036 3840 9029 3859 9009
      3865 8971 3823 8971
TIME...MOT...LOC 1927Z 267DEG 22KT 3844 8994 

$$

ILC133-163-112000-
/O.CON.KLSX.SV.W.0072.000000T0000Z-160511T2000Z/
ST. CLAIR IL-MONROE IL-
228 PM CDT WED MAY 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR ST. CLAIR AND MONROE COUNTIES...

AT 227 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER FREEBURG...
MOVING EAST AT 25 MPH.

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

SOURCE...TRAINED WEATHER SPOTTERS. QUARTER SIZE HAIL REPORTED IN NEW
         ATHENS.

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...
BELLEVILLE...O'FALLON...EAST ST. LOUIS...FAIRVIEW HEIGHTS...CAHOKIA...
SWANSEA...SHILOH...WATERLOO...COLUMBIA...MASCOUTAH...CENTREVILLE...LEBANON...
FREEBURG...MILLSTADT...RED BUD...NEW BADEN...SCOTT AFB...SMITHTON...NEW
ATHENS AND ALORTON.

THIS INCLUDES INTERSTATE 64 IN ILLINOIS BETWEEN EXITS 12 AND 27.
 
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 3821 9035 3822 9036 3840 9029 3859 9009
      3865 8971 3823 8971
TIME...MOT...LOC 1927Z 267DEG 22KT 3844 8994 

HAIL...1.75IN
WIND...60MPH
 
$$

GLASS

342 
WWUS53 KLSX 111949
SVSLSX

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

ILC133-163-112000-
/O.CON.KLSX.SV.W.0072.000000T0000Z-160511T2000Z/
ST. CLAIR IL-MONROE IL-
249 PM CDT WED MAY 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR EASTERN ST. CLAIR AND CENTRAL MONROE COUNTIES...

AT 249 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR NEW MEMPHIS...
MOVING EAST AT 35 MPH.

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

SOURCE...TRAINED WEATHER SPOTTERS. 

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...
BELLEVILLE...O'FALLON...SHILOH...WATERLOO...MASCOUTAH...LEBANON...FREEBURG...
RED BUD...NEW BADEN...SCOTT AFB...SMITHTON...NEW ATHENS...MARISSA...
VALMEYER...NEW DESIGN...ST. LIBORY...LENZBURG...HECKER...SUMMERFIELD AND
FAYETTEVILLE.

THIS INCLUDES INTERSTATE 64 IN ILLINOIS BETWEEN EXITS 19 AND 27.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

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 3822 9036 3825 9035 3831 9032 3836 9006
      3862 8987 3865 8971 3823 8971 3821 9035
TIME...MOT...LOC 1949Z 268DEG 29KT 3842 8973 

HAIL...1.75IN
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, 1:08 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	52 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, 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 Illinois, 2016 Severe Thunderstorm Warnings in Missouri, 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.