Alert archive / Missouri / Tornado Warnings in 2011
Tornado Warning 3, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Feb 27, 2011, 10:19 PM CST for Franklin County, Gasconade County, Warren County, Missouri. It was in force for 41 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
- Feb 27, 2011, 10:19 PM CST (04:19 UTC)
- Expired
- Feb 27, 2011, 11:00 PM CST
- In force
- 41 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Franklin County, MO, Gasconade County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 04:22 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, 10:50 PM CST | TSTM WND DMG | Washington, MO | TREES DOWN POWER POLES SNAPPED |
| Feb 27, 10:53 PM CST | TSTM WND DMG | Washington, MO | SEVERAL TREES FELL ONTO HOUSES. WIRES DOWN AND UTILITY POLES SNAPPED. |
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, 4.3 hours before the alert went out and 284 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.
430 WFUS53 KLSX 280419 TORLSX MOC071-073-219-280500- /O.NEW.KLSX.TO.W.0003.110228T0419Z-110228T0500Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1019 PM CST SUN FEB 27 2011 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI... GASCONADE COUNTY IN EAST CENTRAL MISSOURI... WARREN COUNTY IN EAST CENTRAL MISSOURI... * UNTIL 1100 PM CST * AT 1014 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 6 MILES NORTH OF MOUNT STERLING...OR 13 MILES SOUTHWEST OF HERMANN...AND MOVING NORTHEAST AT 50 MPH. * LOCATIONS IMPACTED INCLUDE... HERMANN...NEW HAVEN...WASHINGTON...WARRENTON...TRELOAR... MARTHASVILLE...TRUESDALE...BAY...SWISS...BERGER AND HOLSTEIN. 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 3859 9165 3888 9112 3855 9097 3849 9165 TIME...MOT...LOC 0419Z 247DEG 42KT 3858 9151 $$ CVKING
2 follow-up statements
032 WWUS53 KLSX 280437 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1037 PM CST SUN FEB 27 2011 MOC071-073-219-280500- /O.CON.KLSX.TO.W.0003.000000T0000Z-110228T0500Z/ FRANKLIN MO-GASCONADE MO-WARREN MO- 1037 PM CST SUN FEB 27 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR WARREN...GASCONADE AND NORTHWESTERN FRANKLIN COUNTIES UNTIL 1100 PM CST... AT 1031 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS AND BRIEF RAIN-WRAPPED TORNADOES. THESE DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR WARRENTON TO SOUTHWEST OF HERMANN...MOVING NORTHEAST AT 50 MPH. LOCATIONS IMPACTED INCLUDE... NEW HAVEN...WARRENTON...HERMANN...WASHINGTON...TRELOAR... MARTHASVILLE...BAY...SWISS AND HOLSTEIN. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 3859 9165 3888 9112 3855 9097 3849 9165 TIME...MOT...LOC 0436Z 247DEG 42KT 3883 9106 3853 9156 $$ CVKING
788 WWUS53 KLSX 280440 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1040 PM CST SUN FEB 27 2011 MOC071-073-219-280500- /O.CON.KLSX.TO.W.0003.000000T0000Z-110228T0500Z/ FRANKLIN MO-GASCONADE MO-WARREN MO- 1040 PM CST SUN FEB 27 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR WARREN...GASCONADE AND NORTHWESTERN FRANKLIN COUNTIES UNTIL 1100 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 WRIGHT CITY TO 5 MILES NORTHEAST OF MOUNT STERLING...MOVING NORTHEAST AT 50 MPH. LOCATIONS IMPACTED INCLUDE... NEW HAVEN...WASHINGTON...TRELOAR...MARTHASVILLE AND HOLSTEIN. 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. 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 3867 9150 3888 9112 3855 9097 TIME...MOT...LOC 0440Z 247DEG 42KT 3885 9100 3855 9150 $$ 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, 10:25 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, 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.