Alert archive / Illinois / Tornado Warnings in 2014
Tornado Warning 30, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Sep 1, 2014, 11:07 PM CDT for Monroe County, Saint Clair County, Illinois; Jefferson County, Saint Louis County, Missouri. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 1, 2014, 11:07 PM CDT (04:07 UTC)
- Expired
- Sep 1, 2014, 11:30 PM CDT
- In force
- 23 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Monroe County, IL, Saint Clair County, IL, Jefferson County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 49 km from the middle of the area, began a volume at 04:07 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 1, 5:57 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 4.1 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
- 56 J/kg
- Mixed-layer CIN
- -180 J/kg
- Mixed-layer LCL
- 1331 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
368
WFUS53 KLSX 020407
TORLSX
ILC133-163-MOC099-189-020430-
/O.NEW.KLSX.TO.W.0030.140902T0407Z-140902T0430Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1107 PM CDT MON SEP 1 2014
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN MONROE COUNTY IN SOUTHWEST ILLINOIS...
WEST CENTRAL ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...
NORTHEASTERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI...
SOUTH CENTRAL ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 1130 PM CDT
* AT 1102 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR ARNOLD...AND MOVING EAST AT 45 MPH.
HAZARD...TORNADO AND QUARTER SIZE HAIL.
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...
COLUMBIA AND DUPO AROUND 1115 PM CDT.
CAHOKIA AROUND 1120 PM CDT.
MILLSTADT AND CENTREVILLE AROUND 1125 PM CDT.
BELLEVILLE AND SWANSEA AROUND 1130 PM CDT.
OTHER LOCATIONS IN THE WARNING INCLUDE NEW HANDOVER.
THIS WARNING INCLUDES MASTODON HISTORIC SITE.
THIS WARNING ALSO INCLUDES...
INTERSTATE 55 IN MISSOURI FROM EXIT 185 TO EXIT 191.
INTERSTATE 64 IN ILLINOIS FROM EXIT 9 TO EXIT 23.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3843 8990 3834 9041 3851 9047 3855 9028
3853 9026 3856 9024 3863 8996
TIME...MOT...LOC 0407Z 255DEG 41KT 3845 9033
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
TRUETT2 follow-up statements
472
WWUS53 KLSX 020424
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1124 PM CDT MON SEP 1 2014
MOC099-189-020434-
/O.CAN.KLSX.TO.W.0030.000000T0000Z-140902T0430Z/
JEFFERSON MO-ST. LOUIS MO-
1124 PM CDT MON SEP 1 2014
...THE TORNADO WARNING FOR SOUTH CENTRAL ST. LOUIS AND NORTHEASTERN
JEFFERSON COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3837 9030 3853 9026 3856 9024 3863 8996
3843 8990
TIME...MOT...LOC 0424Z 267DEG 26KT 3841 9022
$$
ILC133-163-020430-
/O.CON.KLSX.TO.W.0030.000000T0000Z-140902T0430Z/
MONROE IL-ST. CLAIR IL-
1124 PM CDT MON SEP 1 2014
...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL ST. CLAIR AND
NORTH CENTRAL MONROE COUNTIES UNTIL 1130 PM CDT...
AT 1119 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR COLUMBIA...AND MOVING EAST AT 30 MPH.
HAZARD...TORNADO AND QUARTER SIZE HAIL.
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...
MILLSTADT AROUND 1130 PM CDT.
OTHER LOCATIONS IN THE WARNING INCLUDE BARR.
THIS WARNING ALSO INCLUDES...
INTERSTATE 64 IN ILLINOIS FROM EXIT 9 TO EXIT 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3837 9030 3853 9026 3856 9024 3863 8996
3843 8990
TIME...MOT...LOC 0424Z 267DEG 26KT 3841 9022
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
TRUETT276
WWUS53 KLSX 020430
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1130 PM CDT MON SEP 1 2014
ILC133-163-020440-
/O.EXP.KLSX.TO.W.0030.000000T0000Z-140902T0430Z/
MONROE IL-ST. CLAIR IL-
1130 PM CDT MON SEP 1 2014
...THE TORNADO WARNING FOR WEST CENTRAL ST. CLAIR AND NORTH CENTRAL
MONROE COUNTIES HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS THE WARNED
AREA.
LAT...LON 3837 9030 3853 9026 3856 9024 3863 8996
3843 8990
TIME...MOT...LOC 0424Z 255DEG 41KT 3850 9009
$$
TRUETTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 8:44 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 46 min |
| Sep 1, 9:26 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison | 49 min |
| Sep 1, 11:14 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 25 min |
| Sep 1, 11:57 PM CDT | Flash Flood Warning | LSX | Fayette | 8 hr |
| Sep 2, 7:51 AM CDT | Areal Flood Warning | LSX | Fayette | 8 hr |
| Sep 1, 7:58 PM CDT | Areal Flood Advisory | LSX | Boone, Callaway, Montgomery | 3 hr |
| Sep 1, 8:53 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Warren | 52 min |
| Sep 1, 9:07 PM CDT | Flash Flood Warning | LSX | Boone, Callaway, Moniteau | 4 hr |
| Sep 1, 10:33 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis | 42 min |
| Sep 1, 10:43 PM CDT | Tornado Warning | LSX | Jefferson, Saint Louis | 32 min |
| Sep 1, 10:52 PM CDT | Areal Flood Advisory | LSX | Franklin, Jefferson, Saint Charles, Saint Louis, City of Saint Louis | 4 hr |
| Sep 2, 12:08 AM CDT | Flash Flood Warning | LSX | Boone, Callaway, Moniteau, Montgomery | 8 hr |
| Sep 2, 1:23 AM CDT | River Flood Warning | LSX | Saint Charles | 7 days |
| Sep 2, 7:23 AM CDT | River Flood Warning | LSX | Lincoln | 38 hr |
| Sep 2, 7:43 AM CDT | Areal Flood Warning | LSX | Boone, Callaway, Lincoln, Montgomery, Saint Charles, Warren | 8 hr |
Nearby
Tornado Warnings in Illinois, 2014Tornado Warnings in Missouri, 2014Every tornado warning in 2014Tornadoes in 2014
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.