Alert archive / Missouri / Tornado Warnings in 2011
Tornado Warning 42, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 22, 2011, 5:49 PM CDT for 4 counties in Missouri. It was in force for 41 min. 12 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, 5:49 PM CDT (22:49 UTC)
- Expired
- Apr 22, 2011, 6:30 PM CDT
- In force
- 41 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Callaway County, MO, Gasconade County, MO, Montgomery County, MO, Osage County, MO
The radar
The St Louis radar (KLSX), 90 km from the middle of the area, began a volume at 22:51 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, 5:51 PM CDT | FUNNEL CLOUD | 8 E Holts Summit, MO | SPOTTER 2 MILES NORTH OF TABBETTS REPORTS A FUNNEL CLOUD 3 MILES NORTH OF HIS LOCATION GOING UP AND DOWN |
| Apr 22, 5:51 PM CDT | HAIL 1 | 2 S Fulton, MO | HAIL OBSERVED ON HIGHWAY 54 |
| Apr 22, 5:53 PM CDT | HAIL 0.25 | Fulton, MO | |
| Apr 22, 5:55 PM CDT | HAIL 0.5 | 1 E Fulton, MO | |
| Apr 22, 5:56 PM CDT | HAIL 0.7 | Fulton, MO | ON NORTH SIDE OF TOWN |
| Apr 22, 6:01 PM CDT | FUNNEL CLOUD | Mokane, MO | SPOTTER IN MOKANE LOOKING NORTH REPORTS A FUNNEL CLOUD |
| Apr 22, 6:02 PM CDT | FUNNEL CLOUD | 3 N Mokane, MO | |
| Apr 22, 6:02 PM CDT | FUNNEL CLOUD | Portland, MO | SEVERAL FUNNEL CLOUDS...STRONG ROTATION IN BASE OF MESO. |
| Apr 22, 6:14 PM CDT | HAIL 1 | Portland, MO | |
| Apr 22, 6:15 PM CDT | HAIL 1.75 | 4 W Big Spring, MO | MEASURED NEAR THE INTERSECTION OF HWY HH AND K |
| Apr 22, 6:18 PM CDT | HAIL 2.5 | 4 W Americus, MO | ON HWY K ALONG THE CALLAWAY AND MONTGOMERY COUNTY LINE |
| Apr 22, 6:20 PM CDT | HAIL 0.75 | Americus, MO |
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
Springfield, MO (KSGF), launched 12:00Z, 10.8 hours before the alert went out and 280 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
- 148 J/kg
- Mixed-layer CIN
- -391 J/kg
- Mixed-layer LCL
- 454 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 516 m²/s²
- 0-3 km storm-relative helicity
- 554 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
199 WFUS53 KLSX 222249 TORLSX MOC027-073-139-151-222330- /O.NEW.KLSX.TO.W.0042.110422T2249Z-110422T2330Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 549 PM CDT FRI APR 22 2011 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN CALLAWAY COUNTY IN CENTRAL MISSOURI... NORTHERN GASCONADE COUNTY IN EAST CENTRAL MISSOURI... MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI... NORTHEASTERN OSAGE COUNTY IN CENTRAL MISSOURI... * UNTIL 630 PM CDT * AT 546 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR NEW BLOOMFIELD...OR 6 MILES NORTHEAST OF HOLTS SUMMIT...AND MOVING EAST AT 35 MPH. IN ADDITION...LARGE HAIL TO THE SIZE OF GOLFBALLS WILL ACCOMPANY THIS STORM. * LOCATIONS IMPACTED INCLUDE... FULTON...CHAMOIS...WILLIAMSBURG...MINEOLA...TEBBETTS...MOKANE... STEEDMAN...REFORM...PORTLAND...MORRISON...GASCONADE...AMERICUS AND RHINELAND. 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 3894 9154 3862 9149 3862 9199 3889 9200 TIME...MOT...LOC 2249Z 264DEG 32KT 3870 9200 $$ GLASS
3 follow-up statements
805 WWUS53 KLSX 222303 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 603 PM CDT FRI APR 22 2011 MOC027-073-139-151-222330- /O.CON.KLSX.TO.W.0042.000000T0000Z-110422T2330Z/ OSAGE MO-GASCONADE MO-CALLAWAY MO-MONTGOMERY MO- 603 PM CDT FRI APR 22 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR MONTGOMERY...SOUTHEASTERN CALLAWAY...NORTHERN GASCONADE AND NORTHEASTERN OSAGE COUNTIES UNTIL 630 PM CDT... AT 559 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD. A TORNADO MAY DEVELOP AT ANY TIME. THIS DANGEROUS STORM WAS LOCATED 5 MILES NORTHWEST OF CHAMOIS...OR 11 MILES SOUTHEAST OF FULTON...MOVING EAST AT 40 MPH. LOCATIONS IMPACTED INCLUDE... CHAMOIS...WILLIAMSBURG...MINEOLA...REFORM...PORTLAND...MORRISON... GASCONADE...AMERICUS AND RHINELAND. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 3894 9154 3862 9149 3862 9199 3889 9200 TIME...MOT...LOC 2303Z 264DEG 37KT 3872 9181 $$ GLASS
011 WWUS53 KLSX 222316 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 616 PM CDT FRI APR 22 2011 MOC027-073-139-151-222330- /O.CON.KLSX.TO.W.0042.000000T0000Z-110422T2330Z/ OSAGE MO-GASCONADE MO-CALLAWAY MO-MONTGOMERY MO- 616 PM CDT FRI APR 22 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR MONTGOMERY...EAST CENTRAL CALLAWAY...NORTHERN GASCONADE AND NORTHEASTERN OSAGE COUNTIES UNTIL 630 PM CDT... AT 612 PM CDT...TRAINED WEATHER SPOTTERS REPORTED STRONG ROTATION WITH THIS STORM. A TORNADO MAY DEVELOP AT ANY TIME. THIS DANGEROUS STORM WAS LOCATED NEAR CHAMOIS...OR 15 MILES WEST OF HERMANN...MOVING EAST AT 45 MPH. LOCATIONS IMPACTED INCLUDE... MINEOLA...MORRISON...GASCONADE...AMERICUS AND RHINELAND. 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 3862 9179 3891 9180 3894 9154 3862 9149 TIME...MOT...LOC 2316Z 264DEG 37KT 3872 9166 $$ GLASS
949 WWUS53 KLSX 222323 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 623 PM CDT FRI APR 22 2011 MOC027-151-222333- /O.CAN.KLSX.TO.W.0042.000000T0000Z-110422T2330Z/ OSAGE MO-CALLAWAY MO- 623 PM CDT FRI APR 22 2011 ...THE TORNADO WARNING FOR EAST CENTRAL CALLAWAY AND NORTHEASTERN OSAGE COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 3862 9165 3893 9165 3894 9154 3862 9149 TIME...MOT...LOC 2323Z 263DEG 40KT 3870 9155 $$ MOC073-139-222330- /O.CON.KLSX.TO.W.0042.000000T0000Z-110422T2330Z/ GASCONADE MO-MONTGOMERY MO- 623 PM CDT FRI APR 22 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR MONTGOMERY AND NORTHERN GASCONADE COUNTIES UNTIL 630 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 9 MILES WEST OF HERMANN...MOVING EAST AT 45 MPH. LOCATIONS IMPACTED INCLUDE... RHINELAND. 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 3862 9165 3893 9165 3894 9154 3862 9149 TIME...MOT...LOC 2323Z 263DEG 40KT 3870 9155 $$ GLASS
The 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, 6:05 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Osage | 40 min |
| Apr 22, 6:22 PM CDT | Tornado Warning | LSX | Franklin, Gasconade, Lincoln, Montgomery, Warren | 38 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.