Alert archive / Missouri / Tornado Warnings in 2011
Tornado Warning 4, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Feb 27, 2011, 10:25 PM CST for Franklin County, Gasconade County, Missouri. It was in force for 50 min. 7 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 27, 2011, 10:25 PM CST (04:25 UTC)
- Expired
- Feb 27, 2011, 11:15 PM CST
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Franklin County, MO, Gasconade County, MO
The radar
The St Louis radar (KLSX), 57 km from the middle of the area, began a volume at 04:27 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 27, 10:30 PM CST | TSTM WND DMG | Owensville, MO | NUMEROUS POWER LINES...TREES AND TREE LIMBS BLOWN DOWN IN OWENSVILLE AND ROSEBUD. ALSO...A BUILDING IN OWENSVILLE HAD ITS AWNING BLOWN OFF WHICH DAMAGED THE FACADE. |
| Feb 27, 10:30 PM CST | TSTM WND GST 60 | Owensville, MO | |
| Feb 27, 10:30 PM CST | TSTM WND GST 80 | 4 W Lyon, MO | NUMEROUS TREES UPROOTED. TIME ESTIMATED BY RADAR. |
| Feb 27, 10:30 PM CST | HAIL 0.25 | Owensville, MO | |
| Feb 27, 10:48 PM CST | HAIL 1.75 | 6 E Drake, MO | |
| Feb 27, 10:54 PM CST | TSTM WND DMG | Beaufort, MO | POWER LINES DOWN |
| Feb 27, 11:00 PM CST | TSTM WND DMG | 3 Se Washington, MO | LARGE BARN DESTROYED. DEBRIS THROWN SEVERAL HUNDRED YARDS. |
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, 4.4 hours before the alert went out and 282 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.
387 WFUS53 KLSX 280425 TORLSX MOC071-073-280515- /O.NEW.KLSX.TO.W.0004.110228T0425Z-110228T0515Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1025 PM CST SUN FEB 27 2011 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... FRANKLIN COUNTY IN EAST CENTRAL MISSOURI... GASCONADE COUNTY IN EAST CENTRAL MISSOURI... * UNTIL 1115 PM CST * AT 1022 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR MOUNT STERLING...OR 9 MILES NORTHWEST OF OWENSVILLE...AND MOVING EAST AT 60 MPH. * LOCATIONS IMPACTED INCLUDE... OWENSVILLE...SULLIVAN...UNION...ST. CLAIR...DRAKE...ROSEBUD... GERALD...BEAUFORT...PARKWAY...JAPAN...LESLIE...NOSER MILL...LYON... STANTON AND PINEY PARK. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 3855 9097 3821 9084 3821 9164 3850 9165 TIME...MOT...LOC 0425Z 261DEG 50KT 3843 9157 $$ CVKING
2 follow-up statements
060 WWUS53 KLSX 280439 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1039 PM CST SUN FEB 27 2011 MOC071-073-280515- /O.CON.KLSX.TO.W.0004.000000T0000Z-110228T0515Z/ FRANKLIN MO-GASCONADE MO- 1039 PM CST SUN FEB 27 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR GASCONADE AND FRANKLIN COUNTIES UNTIL 1115 PM CST... AT 1036 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS AND BRIEF RAIN-WRAPPED TORNADOES. THESE DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7 MILES NORTH OF GERALD TO 9 MILES SOUTHEAST OF OWENSVILLE...MOVING EAST AT 70 MPH. LOCATIONS IMPACTED INCLUDE... SULLIVAN...UNION...ST. CLAIR...BEAUFORT...PARKWAY...JAPAN... LESLIE...LYON...NOSER MILL...STANTON AND PINEY PARK. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 3851 9148 3855 9097 3821 9084 3821 9145 TIME...MOT...LOC 0439Z 256DEG 60KT 3852 9126 3825 9133 $$ CVKING
252 WWUS53 KLSX 280513 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1113 PM CST SUN FEB 27 2011 MOC071-073-280523- /O.EXP.KLSX.TO.W.0004.000000T0000Z-110228T0515Z/ FRANKLIN MO-GASCONADE MO- 1113 PM CST SUN FEB 27 2011 ...THE TORNADO WARNING FOR GASCONADE AND FRANKLIN COUNTIES WILL EXPIRE AT 1115 PM CST... THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED AREA. LAT...LON 3851 9148 3855 9097 3821 9084 3821 9145 TIME...MOT...LOC 0513Z 256DEG 60KT 3866 9056 3839 9063 $$ CVKING
The 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, 10:47 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, 12:44 AM CST | Tornado Warning | LSX | Iron, Madison, Sainte Genevieve, Saint Francois | 46 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.