Alert archive / Missouri / Tornado Warnings in 2019
Tornado Warning 45, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Aug 30, 2019, 4:37 PM CDT for Franklin County, Saint Charles County, Saint Louis County, Missouri. It was in force for 38 min. 2 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
- Aug 30, 2019, 4:37 PM CDT (21:37 UTC)
- Expired
- Aug 30, 2019, 5:15 PM CDT
- In force
- 38 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Franklin County, MO, Saint Charles County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 20 km from the middle of the area, began a volume at 21:38 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 |
|---|---|---|---|
| Aug 30, 4:45 PM CDT | TSTM WND DMG | 1 E Wildwood, MO | TREE DOWN ON HIGHWAY 100 NORTH OF EUREKA. |
| Aug 30, 5:16 PM CDT | TSTM WND GST 60 | 1 E Chesterfield, MO |
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 |
|---|---|---|---|
| Aug 30, 3:44 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.6 hours before the alert went out and 255 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
- 1681 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
393
WFUS53 KLSX 302137
TORLSX
MOC071-183-189-302215-
/O.NEW.KLSX.TO.W.0045.190830T2137Z-190830T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
437 PM CDT Fri Aug 30 2019
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Western St. Charles County in east central Missouri...
East central Franklin County in east central Missouri...
Northwestern St. Louis County in east central Missouri...
* Until 515 PM CDT.
* At 437 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Wildwood, moving northeast at 20 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Defiance around 450 PM CDT.
Wildwood, Ballwin, Ellisville, Clarkson Valley, Spirit of St.
Louis Airport and Winchester around 500 PM CDT.
Weldon Spring Heights around 510 PM CDT.
O'Fallon, St. Peters, Chesterfield, Maryland Heights, Dardenne
Prairie, Town and Country, Weldon Spring, Cottleville and
Harvester around 515 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Matson.
This also includes Babler Memorial State Park and First Missouri
State Capitol Historic Site.
This includes the following highways...
Interstate 44 in Missouri between exits 257 and 265.
Interstate 70 in Missouri between exits 217 and 231.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3848 9063 3849 9066 3845 9066 3845 9069
3846 9068 3846 9069 3847 9070 3847 9071
3848 9072 3847 9074 3846 9074 3852 9087
3889 9067 3876 9037
TIME...MOT...LOC 2137Z 209DEG 19KT 3854 9073
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Britt1 follow-up statement
403
WWUS53 KLSX 302203
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
503 PM CDT Fri Aug 30 2019
MOC071-302211-
/O.CAN.KLSX.TO.W.0045.000000T0000Z-190830T2215Z/
Franklin MO-
503 PM CDT Fri Aug 30 2019
...THE TORNADO WARNING FOR EAST CENTRAL FRANKLIN COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
east central Missouri.
LAT...LON 3850 9061 3854 9074 3864 9073 3859 9078
3858 9082 3857 9084 3858 9084 3889 9067
3876 9037
TIME...MOT...LOC 2201Z 206DEG 33KT 3866 9063
$$
MOC183-189-302215-
/O.CON.KLSX.TO.W.0045.000000T0000Z-190830T2215Z/
St. Charles MO-St. Louis MO-
503 PM CDT Fri Aug 30 2019
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR WESTERN
ST. CHARLES AND NORTHWESTERN ST. LOUIS COUNTIES...
At 501 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Spirit of St. Louis Airport, moving northeast at 40
mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
O'Fallon, St. Peters, Dardenne Prairie, Town and Country and
Weldon Spring around 510 PM CDT.
St. Charles, Maryland Heights, Cottleville, Champ and Harvester
around 515 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Matson.
This also includes Babler Memorial State Park, Route 66 State Park,
and First Missouri State Capitol Historic Site.
This includes the following highways...
Interstate 44 in Missouri between exits 264 and 265.
Interstate 70 in Missouri between exits 217 and 231.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3850 9061 3854 9074 3864 9073 3859 9078
3858 9082 3857 9084 3858 9084 3889 9067
3876 9037
TIME...MOT...LOC 2201Z 206DEG 33KT 3866 9063
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
BrittThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 7:02 PM CDT | Special Weather Statement | LSX | Cole, Moniteau | 43 min |
| Aug 30, 10:56 AM CDT | River Flood Warning | LSX | Boone, Callaway, Cole, Moniteau | 21 days |
| Aug 30, 10:56 AM CDT | River Flood Warning | LSX | Franklin, Warren | 21 days |
| Aug 30, 11:00 AM CDT | River Flood Warning | LSX | Cole, Osage | 5 days |
| Aug 30, 2:47 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade | 43 min |
| Aug 30, 3:26 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Saint Charles, Warren, Washington | 49 min |
| Aug 30, 4:08 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis | 67 min |
| Aug 30, 5:02 PM CDT | Flash Flood Warning | LSX | Franklin, Jefferson, Saint Louis | 3 hr |
| Aug 30, 5:14 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 46 min |
| Aug 30, 5:17 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 43 min |
| Aug 30, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 32 min |
| Aug 30, 5:41 PM CDT | Flash Flood Warning | LSX | Jefferson, Saint Louis, City of Saint Louis | 6 hr |
| Aug 30, 5:59 PM CDT | Special Weather Statement | LSX | City of Saint Louis | 46 min |
| Aug 30, 6:34 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Washington | 41 min |
Nearby
Tornado Warnings in Missouri, 2019Every tornado warning in 2019Tornadoes in 2019
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.