Alert archive / Illinois / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 8, NWS St. Louis, MO

March 15, 20164 counties in Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Mar 15, 2016, 7:31 PM CDT for 4 counties in Illinois. It was in force for 27 min. 1 report 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: Mar 15, 2016, 7:31 PM CDT (00:31 UTC)
Expired: Mar 15, 2016, 7:58 PM CDT
In force: 27 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Bond County, IL, Clinton County, IL, Madison County, IL, Saint Clair County, IL

The radar

The St Louis radar (KLSX), 89 km from the middle of the area, began a volume at 00:31 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
Mar 15, 7:39 PM CDT	HAIL 0.25	Highland, IL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 183 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: 1364 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1257 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 241 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 8.9

Open this sounding in Storm Lab

The text

As transmitted.

106 
WUUS53 KLSX 160031
SVRLSX
ILC005-027-119-163-160115-
/O.NEW.KLSX.SV.W.0008.160316T0031Z-160316T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
731 PM CDT TUE MAR 15 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
  NORTHEASTERN ST. CLAIR COUNTY IN SOUTHWESTERN ILLINOIS...
  SOUTHERN BOND COUNTY IN SOUTH CENTRAL ILLINOIS...
  SOUTHEASTERN MADISON COUNTY IN SOUTHWESTERN ILLINOIS...

* UNTIL 815 PM CDT

* AT 731 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER ST. JACOB...
  MOVING EAST AT 50 MPH.

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

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  HIGHLAND...TROY...GREENVILLE...BREESE...CARLYLE...AVISTON...ST.
  ROSE...ST. JACOB...MARINE...POCAHONTAS...TAMALCO...BEAVER CREEK...
  JAMESTOWN...PIERRON...KEYESPORT...GRANTFORK...SMITHBORO...
  DUDLEYVILLE AND STOLLETOWN.

THIS INCLUDES INTERSTATE 70 IN ILLINOIS BETWEEN EXITS 21 AND 45.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3863 8989 3877 8991 3895 8933 3862 8925
TIME...MOT...LOC 0031Z 256DEG 44KT 3869 8980 

HAIL...1.00IN
WIND...60MPH
 
$$

BRITT

3 follow-up statements

447 
WWUS53 KLSX 160041
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
741 PM CDT TUE MAR 15 2016

ILC163-160050-
/O.CAN.KLSX.SV.W.0008.000000T0000Z-160316T0115Z/
ST. CLAIR IL-
741 PM CDT TUE MAR 15 2016

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

LAT...LON 3869 8978 3880 8980 3895 8933 3868 8926
TIME...MOT...LOC 0040Z 247DEG 58KT 3876 8961 

$$

ILC005-027-119-160115-
/O.CON.KLSX.SV.W.0008.000000T0000Z-160316T0115Z/
CLINTON IL-BOND IL-MADISON IL-
741 PM CDT TUE MAR 15 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTH CENTRAL CLINTON...SOUTHERN BOND COUNTIES IN SOUTH CENTRAL
ILLINOIS AND SOUTHEASTERN MADISON COUNTIES IN SOUTHWESTERN
ILLINOIS...

AT 740 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HIGHLAND...
MOVING EAST AT 65 MPH.

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

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
HIGHLAND...GREENVILLE...ST. JACOB...MARINE...POCAHONTAS...TAMALCO...
BEAVER CREEK...JAMESTOWN...PIERRON...KEYESPORT...GRANTFORK...
SMITHBORO...DUDLEYVILLE AND STOLLETOWN.

THIS INCLUDES INTERSTATE 70 IN ILLINOIS BETWEEN EXITS 24 AND 45.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3869 8978 3880 8980 3895 8933 3868 8926
TIME...MOT...LOC 0040Z 247DEG 58KT 3876 8961 

HAIL...1.00IN
WIND...60MPH
 
$$

BRITT

520 
WWUS53 KLSX 160049
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
749 PM CDT TUE MAR 15 2016

ILC027-160058-
/O.CAN.KLSX.SV.W.0008.000000T0000Z-160316T0115Z/
CLINTON IL-
749 PM CDT TUE MAR 15 2016

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

LAT...LON 3874 8968 3883 8971 3895 8933 3878 8949
TIME...MOT...LOC 0048Z 232DEG 55KT 3886 8959 

$$

ILC005-119-160115-
/O.CON.KLSX.SV.W.0008.000000T0000Z-160316T0115Z/
BOND IL-MADISON IL-
749 PM CDT TUE MAR 15 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR CENTRAL BOND COUNTY IN SOUTH CENTRAL ILLINOIS AND EAST CENTRAL
MADISON COUNTIES IN SOUTHWESTERN ILLINOIS...

AT 748 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR POCAHONTAS...
MOVING NORTHEAST AT 65 MPH.

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

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
HIGHLAND...GREENVILLE...POCAHONTAS...PIERRON AND GRANTFORK. 

THIS INCLUDES INTERSTATE 70 IN ILLINOIS BETWEEN EXITS 30 AND 41.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3874 8968 3883 8971 3895 8933 3878 8949
TIME...MOT...LOC 0048Z 232DEG 55KT 3886 8959 

HAIL...1.00IN
WIND...60MPH
 
$$

BRITT

344 
WWUS53 KLSX 160058
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
758 PM CDT TUE MAR 15 2016

ILC005-119-160108-
/O.CAN.KLSX.SV.W.0008.000000T0000Z-160316T0115Z/
BOND IL-MADISON IL-
758 PM CDT TUE MAR 15 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BOND COUNTY IN SOUTH
CENTRAL ILLINOIS AND EAST CENTRAL MADISON COUNTIES IN SOUTHWESTERN
ILLINOIS IS CANCELLED...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS
AND EXITED THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3874 8968 3883 8971 3895 8933 3878 8949
TIME...MOT...LOC 0056Z 256DEG 44KT 3889 8943 

$$

BRITT

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 16, 3:55 AM CDT	Red Flag Warning	LSX	Calhoun, Jersey, Madison, Monroe, Saint Clair	16 hr

Nearby

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.