Alert archive / Missouri / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 43, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 30, 2016, 6:41 PM CDT for Madison County, Saint Clair County, Illinois; Saint Charles County, Saint Louis County, City of Saint Louis, Missouri. It was in force for 49 min. 10 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, 6:41 PM CDT (23:41 UTC)
- Expired
- Apr 30, 2016, 7:30 PM CDT
- In force
- 49 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 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), 29 km from the middle of the area, began a volume at 23:41 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, 6:42 PM CDT | HAIL 1.5 | Chesterfield, MO | |
| Apr 30, 6:43 PM CDT | HAIL 1 | Town And Country, MO | |
| Apr 30, 6:47 PM CDT | HAIL 1 | Manchester, MO | |
| Apr 30, 6:54 PM CDT | HAIL 0.7 | Des Peres, MO | PEA TO DIME SIZE HAIL COVERING THE GROUND AT WEST COUNTY MALL. |
| Apr 30, 6:56 PM CDT | HAIL 0.88 | Des Peres, MO | |
| Apr 30, 7:11 PM CDT | HAIL 1 | University City, MO | |
| Apr 30, 7:15 PM CDT | HAIL 1 | Florissant, MO | |
| Apr 30, 7:21 PM CDT | HAIL 0.75 | Sunset Hills, MO | |
| Apr 30, 7:36 PM CDT | HAIL 0.88 | Glendale, MO | |
| Apr 30, 7:40 PM CDT | HAIL 1 | Granite City, 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 12:00Z, 11.7 hours before the alert went out and 225 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
- 464 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 217 m²/s²
- 0-3 km storm-relative helicity
- 253 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
118 WUUS53 KLSX 302341 SVRLSX ILC119-163-MOC183-189-510-010030- /O.NEW.KLSX.SV.W.0043.160430T2341Z-160501T0030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 641 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... WESTERN MADISON COUNTY IN SOUTHWESTERN ILLINOIS... ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI... EAST CENTRAL ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI... ST. LOUIS CITY IN EAST CENTRAL MISSOURI... * UNTIL 730 PM CDT * AT 641 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER TOWN AND COUNTRY...MOVING EAST AT 30 MPH. HAZARD...QUARTER SIZE HAIL. SOURCE...TRAINED WEATHER SPOTTERS. IMPACT...DAMAGE TO VEHICLES IS EXPECTED. * LOCATIONS IMPACTED INCLUDE... ST. LOUIS...ST. CHARLES...ST. PETERS...FLORISSANT...CHESTERFIELD... BELLEVILLE...UNIVERSITY CITY...BALLWIN...GRANITE CITY...O'FALLON... ALTON...KIRKWOOD...MARYLAND HEIGHTS...EAST ST. LOUIS...HAZELWOOD... COLLINSVILLE...EDWARDSVILLE...WEBSTER GROVES...FERGUSON AND MANCHESTER. THIS INCLUDES THE FOLLOWING HIGHWAYS... INTERSTATE 64 IN ILLINOIS BETWEEN EXITS 9 AND 12. INTERSTATE 44 IN MISSOURI BETWEEN EXITS 269 AND 277. INTERSTATE 70 IN MISSOURI BETWEEN EXITS 229 AND 231. THIS ALSO INCLUDES SCOTT JOPLIN HISTORIC SITE...CASTLEWOOD STATE PARK...CONFLUENCE STATE PARK...FIRST MISSOURI STATE CAPITOL HISTORIC SITE...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 3851 9057 3873 9063 3894 9009 3855 8994 TIME...MOT...LOC 2341Z 261DEG 25KT 3863 9051 HAIL...1.00IN WIND...<50MPH $$ GKS
1 follow-up statement
211 WWUS53 KLSX 010004 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 704 PM CDT SAT APR 30 2016 ILC119-163-MOC183-189-510-010030- /O.CON.KLSX.SV.W.0043.000000T0000Z-160501T0030Z/ ST. CLAIR IL-MADISON IL-ST. LOUIS MO-ST. CHARLES MO- ST. LOUIS CITY MO- 704 PM CDT SAT APR 30 2016 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR NORTHWESTERN ST. CLAIR AND WESTERN MADISON COUNTIES IN SOUTHWESTERN ILLINOIS...ST. LOUIS...AND EAST CENTRAL ST. CHARLES COUNTIES IN EAST CENTRAL MISSOURI AND ST. LOUIS CITY... AT 704 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER LADUE...MOVING EAST AT 20 MPH. HAZARD...QUARTER SIZE HAIL. SOURCE...TRAINED WEATHER SPOTTERS. IMPACT...DAMAGE TO VEHICLES IS EXPECTED. LOCATIONS IMPACTED INCLUDE... ST. LOUIS...ST. CHARLES...ST. PETERS...FLORISSANT...CHESTERFIELD... BELLEVILLE...UNIVERSITY CITY...BALLWIN...GRANITE CITY...O'FALLON...ALTON... KIRKWOOD...MARYLAND HEIGHTS...EAST ST. LOUIS...HAZELWOOD...COLLINSVILLE... EDWARDSVILLE...WEBSTER GROVES...FERGUSON AND MANCHESTER. THIS ALSO INCLUDES SCOTT JOPLIN HISTORIC SITE...CASTLEWOOD STATE PARK...CONFLUENCE STATE PARK...FIRST MISSOURI STATE CAPITOL HISTORIC SITE...AND HORSESHOE LAKE STATE PARK. THIS INCLUDES THE FOLLOWING HIGHWAYS... INTERSTATE 64 IN ILLINOIS BETWEEN EXITS 9 AND 12. INTERSTATE 44 IN MISSOURI BETWEEN EXITS 269 AND 277. INTERSTATE 70 IN MISSOURI BETWEEN EXITS 229 AND 231. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 3851 9057 3873 9063 3894 9009 3855 8994 TIME...MOT...LOC 0004Z 274DEG 19KT 3863 9037 HAIL...1.00IN WIND...<50MPH $$ GKS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 4:53 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Pike | 52 min |
| Apr 30, 5:08 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 17 min |
| Apr 30, 5:49 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 41 min |
| Apr 30, 6:37 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey, Madison | 38 min |
| Apr 30, 6:38 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 52 min |
| Apr 30, 6:48 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 42 min |
| Apr 30, 10:21 AM CDT | River Flood Warning | LSX | Franklin, Warren | 3 days |
| Apr 30, 10:21 AM CDT | River Flood Warning | LSX | Saint Charles, Saint Louis | 3 days |
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.