Alert archive / Missouri / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 46, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 30, 2016, 7:25 PM CDT for Saint Charles County, Saint Louis County, City of Saint Louis, Missouri; Madison County, Saint Clair County, Illinois. It was in force for 50 min. 11 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
- Apr 30, 2016, 7:25 PM CDT (00:25 UTC)
- Expired
- Apr 30, 2016, 8:15 PM CDT
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Madison County, IL, Saint Clair County, IL, City of Saint Louis, MO, Saint Charles County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 44 km from the middle of the area, began a volume at 00:26 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, 7:36 PM CDT | HAIL 0.88 | Glendale, MO | |
| Apr 30, 7:40 PM CDT | HAIL 1 | Granite City, IL | |
| Apr 30, 7:43 PM CDT | HAIL 1 | Granite City, IL | |
| Apr 30, 7:48 PM CDT | HAIL 1 | Granite City, IL | |
| Apr 30, 7:49 PM CDT | HAIL 1.75 | 1 Sw Pontoon Beach, IL | |
| Apr 30, 7:53 PM CDT | HAIL 1 | Pontoon Beach, IL | NEAR THE INTERSECTION OF IL ROUTES 162 AND 111. COVERING THE GROUND. |
| Apr 30, 7:53 PM CDT | HAIL 1.75 | 5 Se Granite City, IL | |
| Apr 30, 7:57 PM CDT | HAIL 0.88 | Collinsville, IL | |
| Apr 30, 8:01 PM CDT | HAIL 1 | Collinsville, IL | |
| Apr 30, 8:02 PM CDT | HAIL 2 | Fairmont City, IL | SOCIAL MEDIA REPORT |
| Apr 30, 8:04 PM CDT | HAIL 1 | Caseyville, 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, 0.4 hours before the alert went out and 208 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.
859
WUUS53 KLSX 010025
SVRLSX
ILC119-163-MOC183-189-510-010115-
/O.NEW.KLSX.SV.W.0046.160501T0025Z-160501T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
725 PM CDT SAT APR 30 2016
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN ST. CLAIR COUNTY IN SOUTHWESTERN ILLINOIS...
CENTRAL MADISON COUNTY IN SOUTHWESTERN ILLINOIS...
CENTRAL ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
EAST CENTRAL ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
ST. LOUIS CITY IN EAST CENTRAL MISSOURI...
* UNTIL 815 PM CDT
* AT 725 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER FLORDELL
HILLS...MOVING NORTHEAST AT 20 MPH.
HAZARD...HALF DOLLAR SIZE HAIL.
SOURCE...TRAINED WEATHER SPOTTERS.
IMPACT...DAMAGE TO VEHICLES IS EXPECTED.
* LOCATIONS IMPACTED INCLUDE...
ST. LOUIS...FLORISSANT...CHESTERFIELD...UNIVERSITY CITY...GRANITE CITY...
O'FALLON...ALTON...KIRKWOOD...MARYLAND HEIGHTS...EAST ST. LOUIS...
HAZELWOOD...COLLINSVILLE...EDWARDSVILLE...WEBSTER GROVES...FERGUSON...
CREVE COEUR...FAIRVIEW HEIGHTS...OVERLAND...CLAYTON AND CAHOKIA.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
INTERSTATE 55 IN ILLINOIS NEAR EXIT 23.
INTERSTATE 64 IN ILLINOIS NEAR EXIT 9.
INTERSTATE 44 IN MISSOURI BETWEEN EXITS 276 AND 277.
INTERSTATE 70 IN MISSOURI NEAR EXIT 231.
THIS ALSO INCLUDES SCOTT JOPLIN HISTORIC SITE...CONFLUENCE STATE
PARK...AND HORSESHOE LAKE STATE PARK.
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 3850 9041 3872 9054 3900 8999 3900 8996
3867 8976
TIME...MOT...LOC 0025Z 243DEG 19KT 3870 9025
HAIL...1.25IN
WIND...<50MPH
$$
GKS1 follow-up statement
808
WWUS53 KLSX 010047
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
747 PM CDT SAT APR 30 2016
ILC119-163-MOC183-189-510-010115-
/O.CON.KLSX.SV.W.0046.000000T0000Z-160501T0115Z/
ST. CLAIR IL-MADISON IL-ST. LOUIS MO-ST. CHARLES MO-
ST. LOUIS CITY MO-
747 PM CDT SAT APR 30 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHWESTERN ST. CLAIR AND CENTRAL MADISON COUNTIES IN
SOUTHWESTERN ILLINOIS...CENTRAL ST. LOUIS...AND EAST CENTRAL ST.
CHARLES COUNTIES IN EAST CENTRAL MISSOURI AND ST. LOUIS CITY...
AT 747 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER PONTOON BEACH...
MOVING EAST AT 30 MPH.
HAZARD...HALF DOLLAR SIZE HAIL.
SOURCE...TRAINED WEATHER SPOTTERS.
IMPACT...DAMAGE TO VEHICLES IS EXPECTED.
LOCATIONS IMPACTED INCLUDE...
ST. LOUIS...FLORISSANT...CHESTERFIELD...UNIVERSITY CITY...GRANITE CITY...
O'FALLON...ALTON...KIRKWOOD...MARYLAND HEIGHTS...EAST ST. LOUIS...
HAZELWOOD...COLLINSVILLE...EDWARDSVILLE...WEBSTER GROVES...FERGUSON...
CREVE COEUR...FAIRVIEW HEIGHTS...OVERLAND...CLAYTON AND CAHOKIA.
THIS ALSO INCLUDES SCOTT JOPLIN HISTORIC SITE...CONFLUENCE STATE
PARK...AND HORSESHOE LAKE STATE PARK.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
INTERSTATE 55 IN ILLINOIS NEAR EXIT 23.
INTERSTATE 64 IN ILLINOIS NEAR EXIT 9.
INTERSTATE 44 IN MISSOURI BETWEEN EXITS 276 AND 277.
INTERSTATE 70 IN MISSOURI NEAR EXIT 231.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3850 9041 3872 9054 3900 8999 3900 8996
3867 8976
TIME...MOT...LOC 0047Z 264DEG 25KT 3873 9009
HAIL...1.25IN
WIND...<50MPH
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 7:02 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis | 43 min |
| Apr 30, 7:41 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Iron, Washington | 49 min |
| Apr 30, 7:43 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 47 min |
| Apr 30, 8:31 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 44 min |
| Apr 30, 8:34 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Iron, Washington | 41 min |
| Apr 30, 8:09 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Saint Clair | 51 min |
| Apr 30, 8:25 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 50 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 Missouri, 2016Severe 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.