Alert archive / Missouri / Tornado Warnings in 2010
Tornado Warning 38, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 30, 2010, 9:23 PM CDT for Sainte Genevieve County, Saint Francois County, Missouri. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2010, 9:23 PM CDT (02:23 UTC)
- Expired
- Apr 30, 2010, 10:00 PM CDT
- In force
- 37 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Saint Francois County, MO, Sainte Genevieve County, MO
The radar
The St Louis radar (KLSX), 111 km from the middle of the area, began a volume at 02:25 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.
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 30, 9:03 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 2.4 hours before the alert went out and 305 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
- 1090 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 718 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 340 m²/s²
- 0-3 km storm-relative helicity
- 345 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 10.4
The text
As transmitted, in the capitals the NWS used until 2016.
981
WFUS53 KLSX 010223
TORLSX
MOC186-187-010300-
/O.NEW.KLSX.TO.W.0038.100501T0223Z-100501T0300Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
923 PM CDT FRI APR 30 2010
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHERN STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...
ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI...
* UNTIL 1000 PM CDT
* AT 920 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR ROSELLE...OR 8 MILES EAST OF IRONTON...AND
MOVING NORTHEAST AT 50 MPH.
IN ADDITION...QUARTER SIZE HAIL AND DAMAGING WINDS UP TO 65 MPH
ARE POSSIBLE WITH THIS STORM.
* LOCATIONS IMPACTED INCLUDE...
FARMINGTON...KNOB LICK...WOMAC...COFFMAN...WEINGARTEN...
LIBERTYVILLE...MINNITH AND RIVER AUX VASES.
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.
HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.
&&
LAT...LON 3790 9037 3790 9012 3781 9001 3764 9016
3765 9033 3764 9033 3764 9037 3764 9056
TIME...MOT...LOC 0222Z 227DEG 44KT 3762 9047
$$
TILLY2 follow-up statements
274 WWUS53 KLSX 010246 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 946 PM CDT FRI APR 30 2010 MOC187-010256- /O.CAN.KLSX.TO.W.0038.000000T0000Z-100501T0300Z/ ST. FRANCOIS MO- 946 PM CDT FRI APR 30 2010 ...THE TORNADO WARNING FOR ST. FRANCOIS COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 3768 9013 3790 9037 3790 9012 3781 9001 TIME...MOT...LOC 0246Z 227DEG 51KT 3785 9016 $$ MOC186-010300- /O.CON.KLSX.TO.W.0038.000000T0000Z-100501T0300Z/ STE. GENEVIEVE MO- 946 PM CDT FRI APR 30 2010 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN STE. GENEVIEVE COUNTY UNTIL 1000 PM CDT... AT 943 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR COFFMAN...OR 13 MILES EAST OF FARMINGTON... MOVING NORTHEAST AT 60 MPH. IN ADDITION...QUARTER SIZE HAIL IS ALSO POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... MINNITH AND RIVER AUX VASES. 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. HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. && LAT...LON 3768 9013 3790 9037 3790 9012 3781 9001 TIME...MOT...LOC 0246Z 227DEG 51KT 3785 9016 $$ TILLY
556 WWUS53 KLSX 010258 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 958 PM CDT FRI APR 30 2010 MOC186-010308- /O.EXP.KLSX.TO.W.0038.000000T0000Z-100501T0300Z/ STE. GENEVIEVE MO- 958 PM CDT FRI APR 30 2010 ...THE TORNADO WARNING FOR SOUTHERN STE. GENEVIEVE COUNTY WILL BE ALLOWED TO EXPIRE AT 1000 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM. LAT...LON 3768 9013 3790 9037 3790 9012 3781 9001 TIME...MOT...LOC 0258Z 224DEG 51KT 3797 9000 $$ TILLY
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 7:40 PM CDT | Tornado Warning | LSX | Crawford, Franklin, Jefferson, Washington | 50 min |
| Apr 30, 7:45 PM CDT | Flash Flood Warning | LSX | Crawford | 6 hr |
| Apr 30, 7:55 PM CDT | Tornado Warning | LSX | Jefferson, Saint Francois, Washington | 50 min |
| Apr 30, 8:07 PM CDT | Tornado Warning | LSX | Reynolds | 38 min |
| Apr 30, 8:14 PM CDT | Flash Flood Warning | LSX | Franklin, Jefferson, Washington | 6 hr |
| Apr 30, 8:21 PM CDT | Tornado Warning | LSX | Jefferson, Saint Louis | 39 min |
| Apr 30, 8:39 PM CDT | Flash Flood Warning | LSX | Saint Louis, City of Saint Louis | 6 hr |
| Apr 30, 8:43 PM CDT | Tornado Warning | LSX | Iron, Reynolds | 47 min |
| Apr 30, 8:54 PM CDT | Tornado Warning | LSX | Jefferson, Saint Louis, City of Saint Louis | 51 min |
| Apr 30, 9:02 PM CDT | Tornado Warning | LSX | Jefferson, Sainte Genevieve | 29 min |
| Apr 30, 9:10 PM CDT | Tornado Warning | LSX | Iron, Madison | 50 min |
| Apr 30, 9:51 PM CDT | Tornado Warning | LSX | Sainte Genevieve | 39 min |
| May 1, 3:54 AM CDT | Flash Flood Watch | LSX | Crawford, Iron, Jefferson, Madison, Reynolds, Sainte Genevieve and 2 more | 23 hr |
Nearby
Tornado Warnings in Missouri, 2010Every tornado warning in 2010Tornadoes in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.