Alert archive / Illinois / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 49, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 30, 2016, 8:09 PM CDT for 4 counties in Illinois. It was in force for 51 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
- Apr 30, 2016, 8:09 PM CDT (01:09 UTC)
- Expired
- Apr 30, 2016, 9:00 PM CDT
- In force
- 51 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 50.0 mph
Counties Bond County, IL, Clinton County, IL, Madison County, IL, Saint Clair County, IL
The radar
The St Louis radar (KLSX), 92 km from the middle of the area, began a volume at 01:12 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 30, 9:04 PM CDT | HAIL 0.75 | 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 |
|---|---|---|---|
| Apr 30, 3:59 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.2 hours before the alert went out and 191 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.
- Mixed-layer CAPE
- 481 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 618 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted.
497
WUUS53 KLSX 010109
SVRLSX
ILC005-027-119-163-010200-
/O.NEW.KLSX.SV.W.0049.160501T0109Z-160501T0200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
809 PM CDT SAT APR 30 2016
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
NORTHEASTERN ST. CLAIR COUNTY IN SOUTHWESTERN ILLINOIS...
SOUTHWESTERN BOND COUNTY IN SOUTH CENTRAL ILLINOIS...
SOUTHEASTERN MADISON COUNTY IN SOUTHWESTERN ILLINOIS...
* UNTIL 900 PM CDT
* AT 808 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR COLLINSVILLE...
MOVING EAST AT 20 MPH.
HAZARD...PING PONG 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...
BELLEVILLE...O'FALLON...EAST ST. LOUIS...COLLINSVILLE...EDWARDSVILLE...
FAIRVIEW HEIGHTS...SWANSEA...GLEN CARBON...SHILOH...HIGHLAND...TROY...
MARYVILLE...MASCOUTAH...GREENVILLE...BREESE...LEBANON...CASEYVILLE...NEW
BADEN...SCOTT AFB AND TRENTON.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
INTERSTATE 70 IN ILLINOIS BETWEEN EXITS 21 AND 41.
INTERSTATE 55 IN ILLINOIS NEAR EXIT 23.
INTERSTATE 64 IN ILLINOIS BETWEEN EXITS 12 AND 34.
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 3849 8943 3848 8946 3856 9007 3883 8994
3892 8942
TIME...MOT...LOC 0108Z 284DEG 19KT 3866 8993
HAIL...1.50IN
WIND...<50MPH
$$
GKS2 follow-up statements
569
WWUS53 KLSX 010137
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
837 PM CDT SAT APR 30 2016
ILC005-027-119-163-010200-
/O.CON.KLSX.SV.W.0049.000000T0000Z-160501T0200Z/
CLINTON IL-ST. CLAIR IL-BOND IL-MADISON IL-
837 PM CDT SAT APR 30 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR WESTERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...NORTHEASTERN
ST. CLAIR COUNTY IN SOUTHWESTERN ILLINOIS...SOUTHWESTERN BOND COUNTY
IN SOUTH CENTRAL ILLINOIS AND SOUTHEASTERN MADISON COUNTIES IN
SOUTHWESTERN ILLINOIS...
AT 836 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HIGHLAND...
MOVING EAST AT 25 MPH.
HAZARD...QUARTER SIZE HAIL.
SOURCE...TRAINED WEATHER SPOTTERS.
IMPACT...DAMAGE TO VEHICLES IS EXPECTED.
LOCATIONS IMPACTED INCLUDE...
BELLEVILLE...O'FALLON...EAST ST. LOUIS...COLLINSVILLE...EDWARDSVILLE...
FAIRVIEW HEIGHTS...SWANSEA...GLEN CARBON...SHILOH...HIGHLAND...TROY...
MARYVILLE...MASCOUTAH...GREENVILLE...BREESE...LEBANON...CASEYVILLE...NEW
BADEN...SCOTT AFB AND TRENTON.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
INTERSTATE 70 IN ILLINOIS BETWEEN EXITS 21 AND 41.
INTERSTATE 55 IN ILLINOIS NEAR EXIT 23.
INTERSTATE 64 IN ILLINOIS BETWEEN EXITS 12 AND 34.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3849 8943 3848 8946 3856 9007 3883 8994
3892 8942
TIME...MOT...LOC 0136Z 264DEG 22KT 3869 8969
HAIL...1.00IN
WIND...<50MPH
$$
GKS233
WWUS53 KLSX 010202
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
902 PM CDT SAT APR 30 2016
ILC005-027-119-163-010212-
/O.EXP.KLSX.SV.W.0049.000000T0000Z-160501T0200Z/
CLINTON IL-ST. CLAIR IL-BOND IL-MADISON IL-
902 PM CDT SAT APR 30 2016
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN CLINTON COUNTY IN
SOUTH CENTRAL ILLINOIS...NORTHEASTERN ST. CLAIR COUNTY IN
SOUTHWESTERN ILLINOIS...SOUTHWESTERN BOND COUNTY IN SOUTH CENTRAL
ILLINOIS AND SOUTHEASTERN MADISON COUNTIES IN SOUTHWESTERN ILLINOIS
HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE. HOWEVER SMALL
HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
SOUTHWESTERN ILLINOIS.
LAT...LON 3849 8943 3848 8946 3856 9007 3883 8994
3892 8942
TIME...MOT...LOC 0159Z 284DEG 19KT 3869 8969
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 7:25 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 50 min |
| Apr 30, 7:43 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 47 min |
| Apr 30, 8:25 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 50 min |
| Apr 30, 8:31 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Monroe, Saint Clair, Washington | 44 min |
| Apr 30, 9:56 PM CDT | Areal Flood Advisory | LSX | Monroe | 3 hr |
| May 1, 6:39 PM CDT | Special Weather Statement | LSX | Fayette | 51 min |
| May 1, 6:58 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 29 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2016Every 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.