Alert archive / Missouri / Tornado Warnings in 2011
Tornado Warning 10, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Feb 28, 2011, 12:44 AM CST for 4 counties in Missouri. It was in force for 46 min. 4 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
- Feb 28, 2011, 12:44 AM CST (06:44 UTC)
- Expired
- Feb 28, 2011, 1:30 AM CST
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Iron County, MO, Madison County, MO, Saint Francois County, MO, Sainte Genevieve County, MO
The radar
The St Louis radar (KLSX), 120 km from the middle of the area, began a volume at 06:44 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 |
|---|---|---|---|
| Feb 28, 12:48 AM CST | HAIL 0.7 | Fredericktown, MO | |
| Feb 28, 1:00 AM CST | FUNNEL CLOUD | 1 Nw Fredericktown, MO | |
| Feb 28, 1:07 AM CST | HAIL 0.7 | Knob Lick, MO | |
| Feb 28, 1:15 AM CST | TSTM WND DMG | 5 Sw Fredericktown, MO | POWER LINES DOWN...LARGE TREE SNAPPED...ROOF BLOWN OFF A BARN. |
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 |
|---|---|---|---|
| Feb 27, 9:40 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 6.7 hours before the alert went out and 298 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
- 626 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1011 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 369 m²/s²
- 0-3 km storm-relative helicity
- 472 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 7.4
The text
As transmitted, in the capitals the NWS used until 2016.
810
WFUS53 KLSX 280644
TORLSX
MOC093-123-186-187-280730-
/O.NEW.KLSX.TO.W.0010.110228T0644Z-110228T0730Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1244 AM CST MON FEB 28 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
IRON COUNTY IN SOUTHEAST MISSOURI...
NORTHERN MADISON COUNTY IN SOUTHEAST MISSOURI...
SOUTH CENTRAL STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...
ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI...
* UNTIL 130 AM CST
* AT 1240 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 5 MILES SOUTH OF BELLEVIEW...OR 6 MILES WEST OF
IRONTON...AND MOVING EAST AT 60 MPH.
* LOCATIONS IMPACTED INCLUDE...
IRONTON...FREDERICKTOWN...IRON MOUNTAIN...PILOT KNOB...ARCADIA...
ROSELLE...KNOB LICK...JUNCTION CITY...WOMAC...MARQUAND...DOE RUN...
CATHERINE PLACE...LIBERTYVILLE AND MINE LA MOTTE.
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 3750 9078 3774 9077 3774 9065 3775 9065
3775 9014 3740 9015
TIME...MOT...LOC 0644Z 274DEG 51KT 3760 9068
$$
GKS2 follow-up statements
799
WWUS53 KLSX 280712
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
112 AM CST MON FEB 28 2011
MOC093-280721-
/O.CAN.KLSX.TO.W.0010.000000T0000Z-110228T0730Z/
IRON MO-
112 AM CST MON FEB 28 2011
...THE TORNADO WARNING FOR IRON COUNTY IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3745 9046 3746 9055 3751 9056 3773 9052
3775 9014 3740 9015
TIME...MOT...LOC 0711Z 295DEG 45KT 3755 9019
$$
MOC123-186-187-280730-
/O.CON.KLSX.TO.W.0010.000000T0000Z-110228T0730Z/
MADISON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-
112 AM CST MON FEB 28 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL STE.
GENEVIEVE...ST. FRANCOIS AND NORTHERN MADISON COUNTIES UNTIL 130 AM
CST...
AT 110 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR JUNCTION CITY...OR 5 MILES EAST OF
FREDERICKTOWN...MOVING SOUTHEAST AT 50 MPH.
LOCATIONS IMPACTED INCLUDE...
MARQUAND.
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 3745 9046 3746 9055 3751 9056 3773 9052
3775 9014 3740 9015
TIME...MOT...LOC 0711Z 295DEG 45KT 3755 9019
$$
GKS953
WWUS53 KLSX 280730
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
130 AM CST MON FEB 28 2011
MOC123-186-187-280739-
/O.EXP.KLSX.TO.W.0010.000000T0000Z-110228T0730Z/
MADISON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-
130 AM CST MON FEB 28 2011
...THE TORNADO WARNING FOR SOUTH CENTRAL STE. GENEVIEVE...ST.
FRANCOIS AND NORTHERN MADISON COUNTIES WILL EXPIRE AT 130 AM CST...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 400 AM.
LAT...LON 3745 9046 3746 9055 3751 9056 3773 9052
3775 9014 3740 9015
TIME...MOT...LOC 0729Z 295DEG 45KT 3745 8993
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 6:26 PM CST | Severe Thunderstorm Warning | LSX | Lewis, Marion | 49 min |
| Feb 27, 6:57 PM CST | Severe Thunderstorm Warning | LSX | Lewis, Marion | 15 min |
| Feb 27, 7:38 PM CST | Severe Thunderstorm Warning | LSX | Marion, Ralls | 37 min |
| Feb 27, 8:02 PM CST | Tornado Warning | LSX | Pike | 28 min |
| Feb 27, 8:13 PM CST | Areal Flood Advisory | LSX | Marion | 4 hr |
| Feb 27, 8:25 PM CST | Severe Thunderstorm Warning | LSX | Pike | 35 min |
| Feb 27, 9:50 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Pike, Ralls | 40 min |
| Feb 27, 9:54 PM CST | Tornado Warning | LSX | Cole, Gasconade, Osage | 36 min |
| Feb 27, 10:19 PM CST | Tornado Warning | LSX | Franklin, Gasconade, Warren | 41 min |
| Feb 27, 10:25 PM CST | Tornado Warning | LSX | Franklin, Gasconade | 50 min |
| Feb 27, 10:47 PM CST | Tornado Warning | LSX | Franklin, Jefferson, Saint Charles, Saint Louis, Warren, City of Saint Louis | 43 min |
| Feb 27, 11:05 PM CST | River Flood Warning | LSX | Marion | 35 hr |
| Feb 27, 11:11 PM CST | River Flood Warning | LSX | Lincoln | 35 hr |
| Feb 27, 11:11 PM CST | River Flood Warning | LSX | Marion | 35 hr |
| Feb 27, 11:11 PM CST | River Flood Warning | LSX | Monroe | 4 days |
| Feb 27, 11:18 PM CST | Tornado Warning | LSX | Jefferson, Saint Charles, Saint Louis, City of Saint Louis | 42 min |
| Feb 27, 11:47 PM CST | Severe Thunderstorm Warning | LSX | Crawford | 21 min |
| Feb 28, 12:06 AM CST | Severe Thunderstorm Warning | LSX | Washington | 39 min |
| Feb 28, 12:18 AM CST | Tornado Warning | LSX | Iron, Reynolds | 42 min |
| Feb 28, 12:23 AM CST | Severe Thunderstorm Warning | LSX | Sainte Genevieve, Saint Francois | 52 min |
| Feb 28, 2:19 AM CST | River Flood Warning | LSX | Saint Charles | 4 days |
| Feb 28, 6:46 AM CST | River Flood Warning | LSX | Marion | 29 hr |
| Feb 28, 6:46 AM CST | River Flood Warning | LSX | Pike | 38 hr |
| Feb 28, 6:46 AM CST | River Flood Warning | LSX | Pike | 52 hr |
| Feb 28, 10:38 AM CST | River Flood Warning | LSX | Gasconade, Montgomery | 4 days |
| Feb 28, 11:43 AM CST | River Flood Warning | LSX | Lincoln | 47 hr |
Nearby
Tornado Warnings in Missouri, 2011Every tornado warning in 2011Tornadoes in 2011
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.