Alert archive / Illinois / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 95, NWS St. Louis, MO

May 11, 2016Adams County, Brown County, Pike County, Illinois; Marion County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 11, 2016, 7:08 PM CDT for Adams County, Brown County, Pike County, Illinois; Marion County, Missouri. It was in force for 52 min. 13 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, 7:08 PM CDT (00:08 UTC)
Expired: May 11, 2016, 8:00 PM CDT
In force: 52 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Adams County, IL, Brown County, IL, Pike County, IL, Marion County, MO

The radar

The St Louis radar (KLSX), 129 km from the middle of the area, began a volume at 00:10 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, 7:12 PM CDT	HAIL 4.5	Payson, IL
May 11, 7:17 PM CDT	HAIL 2	Payson, IL
May 11, 7:22 PM CDT	HAIL 4.5	Payson, IL
May 11, 7:25 PM CDT	HAIL 2.75	Payson, IL
May 11, 7:27 PM CDT	HAIL 1.5	3 E Payson, IL	FROM KHQA
May 11, 7:30 PM CDT	HAIL 1.75	Payson, IL
May 11, 7:33 PM CDT	HAIL 2.75	3 Ne Payson, IL
May 11, 7:34 PM CDT	HAIL 1	3 Ese Burton, IL
May 11, 7:37 PM CDT	HAIL 1.75	Payson, IL
May 11, 7:42 PM CDT	HAIL 1	Liberty, IL
May 11, 7:50 PM CDT	HAIL 0.7	2 Sw Buckhorn, IL
May 11, 7:50 PM CDT	HAIL 2	Kellerville, IL
May 11, 7:52 PM CDT	HAIL 1.5	3 E Payson, IL	FROM KHQA

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
May 11, 6:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 0.1 hours before the alert went out and 206 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: 326 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1233 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 194 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

686 
WUUS53 KLSX 120008
SVRLSX
ILC001-009-149-MOC127-120100-
/O.NEW.KLSX.SV.W.0095.160512T0008Z-160512T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
708 PM CDT WED MAY 11 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHERN ADAMS COUNTY IN WEST CENTRAL ILLINOIS...
  WESTERN BROWN COUNTY IN WEST CENTRAL ILLINOIS...
  EAST CENTRAL MARION COUNTY IN NORTHEASTERN MISSOURI...

* UNTIL 800 PM CDT

* AT 708 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER FALL CREEK...
  MOVING NORTHEAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  MOUNT STERLING...BARRY...CAMP POINT...PAYSON...CLAYTON...FALL CREEK...
  BEVERLY...BUCKHORN...ADAMS...KINGSTON...BURTON...LIBERTY...VERSAILLES...
  HULL...RICHFIELD...PERRY...NEW CANTON...PLAINVILLE...KINDERHOOK AND
  BAYLIS.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 172 BETWEEN EXITS 2 AND 10.
 INTERSTATE 72 BETWEEN EXITS 4 AND 20.

THIS ALSO INCLUDES  SILOAM SPRINGS STATE PARK.
 
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 4015 9093 4013 9091 4011 9092 4011 9089
      3981 9059 3954 9111 3954 9115 3956 9117
      3960 9118 3962 9122 3967 9128 3969 9132
      3982 9145
TIME...MOT...LOC 0008Z 239DEG 25KT 3975 9127 

HAIL...1.25IN
WIND...60MPH
 
$$

GLASS

1 follow-up statement

766 
WWUS53 KLSX 120025
SVSLSX

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

ILC001-009-149-MOC127-120100-
/O.CON.KLSX.SV.W.0095.000000T0000Z-160512T0100Z/
PIKE IL-ADAMS IL-BROWN IL-MARION MO-
725 PM CDT WED MAY 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR NORTHERN PIKE...SOUTHERN ADAMS...WESTERN BROWN COUNTIES IN WEST
CENTRAL ILLINOIS AND EAST CENTRAL MARION COUNTIES IN NORTHEASTERN
MISSOURI...

AT 724 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER PAYSON...MOVING
NORTHEAST AT 20 MPH.

HAZARD...GOLF BALL SIZE HAIL. 

SOURCE...TRAINED WEATHER SPOTTERS. 

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

LOCATIONS IMPACTED INCLUDE...
MOUNT STERLING...BARRY...CAMP POINT...PAYSON...CLAYTON...FALL CREEK...
BEVERLY...BUCKHORN...ADAMS...KINGSTON...BURTON...LIBERTY...VERSAILLES...
HULL...RICHFIELD...PERRY...NEW CANTON...PLAINVILLE...KINDERHOOK AND
BAYLIS.

THIS ALSO INCLUDES  SILOAM SPRINGS STATE PARK.
 
THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 172 BETWEEN EXITS 2 AND 10.
 INTERSTATE 72 BETWEEN EXITS 4 AND 20.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND 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 4015 9093 4013 9091 4011 9092 4011 9089
      3981 9059 3954 9111 3954 9115 3956 9117
      3960 9118 3962 9122 3967 9128 3969 9132
      3982 9145
TIME...MOT...LOC 0024Z 228DEG 18KT 3980 9120 

HAIL...1.75IN
WIND...<50MPH
 
$$

GKS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 7:57 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun	48 min
May 11, 8:15 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Jersey, Madison	45 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, 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.