Alert archive / Illinois / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 13, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 2, 2015, 11:44 PM CDT for Clinton County, Saint Clair County, Washington County, Illinois. It was in force for 36 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 2, 2015, 11:44 PM CDT (04:44 UTC)
- Expired
- Apr 3, 2015, 12:20 AM CDT
- In force
- 36 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Clinton County, IL, Saint Clair County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 88 km from the middle of the area, began a volume at 04:48 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 3, 12:20 AM CDT | TSTM WND DMG | Nashville, IL | UTILITY SHED DESTROYED...SHINGLES RIPPED OFF ROOF...FENCE BLOWN OVER AND TREES DOWN. |
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 2, 10:41 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 4.7 hours before the alert went out and 228 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1389 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
946
WUUS53 KLSX 030444
SVRLSX
ILC027-163-189-030530-
/O.NEW.KLSX.SV.W.0013.150403T0444Z-150403T0530Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1144 PM CDT THU APR 2 2015
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS...
SOUTHEASTERN ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...
WASHINGTON COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 1230 AM CDT
* AT 1143 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES
NORTHEAST OF NEW ATHENS...AND MOVING EAST AT 35 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...
NEW BADEN...NASHVILLE...NEW MEMPHIS...LIVELY GROVE...ALBERS...
OKAWVILLE...GERMANTOWN...ST. LIBORY...JOHANNISBURG...VENEDY...STONE
CHURCH...DAMIANSVILLE...ELKTON...OAKDALE...FROGTOWN...ADDIEVILLE...
BARTELSO...CORDES...COVINGTON AND NEW MINDEN.
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 3823 8990 3824 8990 3828 8991 3828 8990
3831 8991 3831 8998 3851 8996 3859 8936
3822 8927
TIME...MOT...LOC 0444Z 270DEG 31KT 3839 8975
HAIL...1.00IN
WIND...60MPH
$$
TILLY2 follow-up statements
027
WWUS53 KLSX 030507
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1207 AM CDT FRI APR 3 2015
ILC027-163-030517-
/O.CAN.KLSX.SV.W.0013.000000T0000Z-150403T0530Z/
ST. CLAIR IL-CLINTON IL-
1207 AM CDT FRI APR 3 2015
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CLINTON AND
SOUTHEASTERN ST. CLAIR COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3822 8927 3823 8970 3842 8970 3844 8967
3847 8951 3847 8947 3849 8945 3850 8942
3849 8940 3851 8935 3851 8934
TIME...MOT...LOC 0507Z 274DEG 32KT 3831 8952
$$
ILC189-030530-
/O.CON.KLSX.SV.W.0013.000000T0000Z-150403T0530Z/
WASHINGTON IL-
1207 AM CDT FRI APR 3 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
WASHINGTON COUNTY UNTIL 1230 AM CDT...
AT 1204 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LIVELY
GROVE...AND MOVING EAST AT 35 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.
LOCATIONS IMPACTED INCLUDE...
NASHVILLE...FROGTOWN...OAKDALE...ADDIEVILLE...CORDES...COVINGTON...
NEW MINDEN...POSEN AND HUEGELY.
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 3822 8927 3823 8970 3842 8970 3844 8967
3847 8951 3847 8947 3849 8945 3850 8942
3849 8940 3851 8935 3851 8934
TIME...MOT...LOC 0507Z 274DEG 32KT 3831 8952
HAIL...<.75IN
WIND...60MPH
$$
TILLY713
WWUS53 KLSX 030520
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1220 AM CDT FRI APR 3 2015
ILC189-030530-
/O.CAN.KLSX.SV.W.0013.000000T0000Z-150403T0530Z/
WASHINGTON IL-
1220 AM CDT FRI APR 3 2015
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN WASHINGTON COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER...GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM.
LAT...LON 3822 8927 3823 8970 3842 8970 3844 8967
3847 8951 3847 8947 3849 8945 3850 8942
3849 8940 3851 8935 3851 8934
TIME...MOT...LOC 0520Z 273DEG 33KT 3830 8937
$$
TILLYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 11:02 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 43 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2015Every severe thunderstorm warning in 2015
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.