Alert archive / Missouri / Tornado Warnings in 2011
Tornado Warning 43, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 22, 2011, 6:22 PM CDT for 5 counties in Missouri. It was in force for 38 min. 24 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
- Apr 22, 2011, 6:22 PM CDT (23:22 UTC)
- Expired
- Apr 22, 2011, 7:00 PM CDT
- In force
- 38 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Franklin County, MO, Gasconade County, MO, Lincoln County, MO, Montgomery County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 53 km from the middle of the area, began a volume at 23:25 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 |
|---|---|---|---|
| Apr 22, 6:30 PM CDT | HAIL 2.75 | 4 N Hermann, MO | |
| Apr 22, 6:32 PM CDT | HAIL 2.75 | Big Spring, MO | |
| Apr 22, 6:35 PM CDT | HAIL 2.5 | 1 Ne Rhineland, MO | |
| Apr 22, 6:35 PM CDT | HAIL 4 | Big Spring, MO | NUMEROUS BASEBALL TO GRAGEFRUIT SIZE HAILSTONES |
| Apr 22, 6:38 PM CDT | HAIL 0.7 | 5 S New Florence, MO | ON HIGHWAY 19 BEGAN AT 634 PM AND CONTINUES. |
| Apr 22, 6:38 PM CDT | HAIL 4 | 3 N Hermann, MO | 3 TO 4 INCH HAIL AT HERMANN COUNTRY CLUB GOLF COURSE |
| Apr 22, 6:44 PM CDT | HAIL 1.25 | Warrenton, MO | |
| Apr 22, 6:46 PM CDT | HAIL 1 | Jonesburg, MO | |
| Apr 22, 6:48 PM CDT | HAIL 1 | Warrenton, MO | |
| Apr 22, 6:50 PM CDT | HAIL 0.5 | Jonesburg, MO | |
| Apr 22, 6:50 PM CDT | HAIL 1 | Jonesburg, MO | |
| Apr 22, 6:50 PM CDT | HAIL 1.75 | 3 S Warrenton, MO | |
| Apr 22, 6:50 PM CDT | HAIL 1.75 | Jonesburg, MO | |
| Apr 22, 6:52 PM CDT | HAIL 4.5 | Warrenton, MO | |
| Apr 22, 6:55 PM CDT | HAIL 1.75 | Warrenton, MO | |
| Apr 22, 6:56 PM CDT | HAIL 1 | 9 W Warrenton, MO | PENNY TO QUARTER SIZED HAIL. |
| Apr 22, 6:58 PM CDT | HAIL 1.75 | Warrenton, MO | |
| Apr 22, 6:58 PM CDT | HAIL 2.75 | Warrenton, MO | |
| Apr 22, 7:00 PM CDT | HAIL 1.5 | Warrenton, MO | HAIL OBSERVED AT HIGHWAY U AND TALL OAKS ROAD |
| Apr 22, 7:00 PM CDT | HAIL 1.75 | Warrenton, MO | |
| Apr 22, 7:00 PM CDT | HAIL 2.75 | Warrenton, MO | HAIL OBSERVED AT HIGHWAY U AND TALL OAKS ROAD |
| Apr 22, 7:00 PM CDT | HAIL 4.5 | Warrenton, MO | |
| Apr 22, 7:06 PM CDT | HAIL 3 | Warrenton, MO | HIGHWAY U AND TALL OAKS ROAD |
| Apr 22, 7:10 PM CDT | TORNADO | Warrenton, MO | SPOTTER REPORTED POSSIBLE BRIEF TORNADO TOUCHDOWN. LASTED ONLY A MOMENT. |
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 |
|---|---|---|---|
| Apr 22, 3:34 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.4 hours before the alert went out and 274 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
- 845 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 585 m²/s²
- 0-3 km storm-relative helicity
- 683 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
971 WFUS53 KLSX 222322 TORLSX MOC071-073-113-139-219-230000- /O.NEW.KLSX.TO.W.0043.110422T2322Z-110423T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 622 PM CDT FRI APR 22 2011 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... EXTREME NORTHWESTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI... NORTHERN GASCONADE COUNTY IN EAST CENTRAL MISSOURI... EXTREME SOUTH CENTRAL LINCOLN COUNTY IN EAST CENTRAL MISSOURI... MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI... WARREN COUNTY IN EAST CENTRAL MISSOURI... * UNTIL 700 PM CDT * AT 620 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 8 MILES WEST OF HERMANN...AND MOVING EAST AT 45 MPH. * LOCATIONS IMPACTED INCLUDE... HERMANN...NEW HAVEN...WARRENTON...BIG SPRING...JONESBURG... TRELOAR...TRUESDALE...MARTHASVILLE...RHINELAND...MCKITTRICK...HIGH HILL...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 3895 9103 3860 9102 3861 9165 3888 9165 TIME...MOT...LOC 2322Z 264DEG 37KT 3870 9156 $$ GLASS
2 follow-up statements
050 WWUS53 KLSX 222333 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 633 PM CDT FRI APR 22 2011 MOC071-073-113-139-219-230000- /O.CON.KLSX.TO.W.0043.000000T0000Z-110423T0000Z/ FRANKLIN MO-GASCONADE MO-WARREN MO-MONTGOMERY MO-LINCOLN MO- 633 PM CDT FRI APR 22 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR EXTREME SOUTH CENTRAL LINCOLN...MONTGOMERY...WARREN...NORTHERN GASCONADE AND EXTREME NORTHWESTERN FRANKLIN COUNTIES UNTIL 700 PM CDT... AT 629 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR HERMANN...MOVING EAST AT 45 MPH. LOCATIONS IMPACTED INCLUDE... WARRENTON...JONESBURG...TRELOAR...TRUESDALE...MARTHASVILLE...HIGH HILL...BERGER AND HOLSTEIN. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 3865 9161 3888 9164 3895 9103 3860 9102 TIME...MOT...LOC 2333Z 264DEG 37KT 3871 9145 $$ GLASS
608
WWUS53 KLSX 222344
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
644 PM CDT FRI APR 22 2011
MOC073-222354-
/O.CAN.KLSX.TO.W.0043.000000T0000Z-110423T0000Z/
GASCONADE MO-
644 PM CDT FRI APR 22 2011
...THE TORNADO WARNING FOR NORTHERN GASCONADE COUNTY IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3889 9142 3895 9103 3860 9102 3863 9135
3865 9138 3870 9138 3872 9143
TIME...MOT...LOC 2344Z 267DEG 38KT 3872 9132
$$
MOC071-113-139-219-230000-
/O.CON.KLSX.TO.W.0043.000000T0000Z-110423T0000Z/
FRANKLIN MO-WARREN MO-MONTGOMERY MO-LINCOLN MO-
644 PM CDT FRI APR 22 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR EXTREME SOUTH CENTRAL
LINCOLN...MONTGOMERY...WARREN AND EXTREME NORTHWESTERN FRANKLIN
COUNTIES UNTIL 700 PM CDT...
AT 642 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 5 MILES EAST OF HERMANN...MOVING EAST AT 45 MPH.
IN ADDITION...LARGE HAIL TO THE SIZE OF TENNIS BALLS WILL OCCUR WITH
THIS STORM.
LOCATIONS IMPACTED INCLUDE...
WARRENTON...JONESBURG...TRELOAR...TRUESDALE...MARTHASVILLE AND
HOLSTEIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 3889 9142 3895 9103 3860 9102 3863 9135
3865 9138 3870 9138 3872 9143
TIME...MOT...LOC 2344Z 267DEG 38KT 3872 9132
$$
GLASSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 9:24 PM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 11 days |
| Apr 21, 10:14 PM CDT | River Flood Warning | LSX | Reynolds | 9 days |
| Apr 22, 7:12 AM CDT | Areal Flood Advisory | LSX | Sainte Genevieve, Saint Francois | 3 hr |
| Apr 22, 7:17 AM CDT | Areal Flood Advisory | LSX | Jefferson | 3 hr |
| Apr 22, 7:28 AM CDT | Flash Flood Warning | LSX | Jefferson, Sainte Genevieve, Saint Francois, Washington | 6 hr |
| Apr 22, 8:47 AM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Moniteau, Osage | 43 min |
| Apr 22, 9:16 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 44 min |
| Apr 22, 9:28 AM CDT | Severe Thunderstorm Warning | LSX | Callaway, Lincoln, Montgomery, Pike, Warren | 47 min |
| Apr 22, 9:32 AM CDT | Severe Thunderstorm Warning | LSX | Callaway, Cole, Franklin, Gasconade, Lincoln, Montgomery and 2 more | 43 min |
| Apr 22, 9:36 AM CDT | Flash Flood Warning | LSX | Marion, Monroe, Ralls, Shelby | 3 hr |
| Apr 22, 9:59 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 46 min |
| Apr 22, 10:17 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Jefferson, Lincoln, Montgomery, Saint Charles and 2 more | 43 min |
| Apr 22, 10:56 AM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 49 min |
| Apr 22, 11:00 AM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Jefferson, Saint Charles, Saint Louis, Warren and 2 more | 45 min |
| Apr 22, 11:44 AM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis, City of Saint Louis | 46 min |
| Apr 22, 12:34 PM CDT | River Flood Warning | LSX | Saint Charles | 26 hr |
| Apr 22, 2:39 PM CDT | River Flood Warning | LSX | Marion | 37 hr |
| Apr 22, 4:32 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Moniteau | 43 min |
| Apr 22, 4:40 PM CDT | Tornado Warning | LSX | Cole, Moniteau | 50 min |
| Apr 22, 5:10 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade | 39 min |
| Apr 22, 5:12 PM CDT | Tornado Warning | LSX | Boone, Callaway, Cole | 48 min |
| Apr 22, 5:49 PM CDT | Tornado Warning | LSX | Callaway, Gasconade, Montgomery, Osage | 41 min |
| Apr 22, 6:05 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Osage | 40 min |
| Apr 22, 6:36 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Osage | 39 min |
| Apr 22, 6:55 PM CDT | Tornado Warning | LSX | Lincoln, Saint Charles, Saint Louis, Warren | 50 min |
| Apr 22, 6:58 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 47 min |
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.