Alert archive / Missouri / Tornado Warnings in 2010
Tornado Warning 40, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 30, 2010, 9:51 PM CDT for Sainte Genevieve County, Missouri; Randolph County, Illinois. It was in force for 39 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, 9:51 PM CDT (02:51 UTC)
- Expired
- Apr 30, 2010, 10:30 PM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
The radar
The St Louis radar (KLSX), 100 km from the middle of the area, began a volume at 02:53 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, 2.9 hours before the alert went out and 267 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.
598
WFUS53 KLSX 010251
TORLSX
ILC157-MOC186-010330-
/O.NEW.KLSX.TO.W.0040.100501T0251Z-100501T0330Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
951 PM CDT FRI APR 30 2010
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
RANDOLPH COUNTY IN SOUTHWEST ILLINOIS...
EAST CENTRAL STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...
* UNTIL 1030 PM CDT
* AT 948 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR WEINGARTEN...OR 9 MILES SOUTHWEST OF STE.
GENEVIEVE...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...
STE. GENEVIEVE...RED BUD...SPARTA...ST. MARY...EVANSVILLE...
BREMEN...BALDWIN...KELLOGG...KASKASKIA...PRAIRIE DU ROCHER...
MODOC...ROOTS...ELLIS GROVE...NEW PALESTINE...RUMA...WALSH...
PRESTON...PRAIRIE...BLAIR AND HOUSTON.
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 3787 8992 3788 8993 3782 9001 3790 9013
3790 9028 3812 9009 3814 9004 3822 9001
3819 8973 3805 8960
TIME...MOT...LOC 0251Z 222DEG 45KT 3790 9010
$$
TILLY2 follow-up statements
631
WWUS53 KLSX 010306
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1006 PM CDT FRI APR 30 2010
MOC186-010316-
/O.CAN.KLSX.TO.W.0040.000000T0000Z-100501T0330Z/
STE. GENEVIEVE MO-
1006 PM CDT FRI APR 30 2010
...THE TORNADO WARNING FOR EAST CENTRAL STE. GENEVIEVE COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3805 8960 3789 8989 3796 8996 3796 8997
3803 9009 3812 9009 3814 9004 3822 9001
3819 8973
TIME...MOT...LOC 0306Z 225DEG 37KT 3805 8997
$$
ILC157-010330-
/O.CON.KLSX.TO.W.0040.000000T0000Z-100501T0330Z/
RANDOLPH IL-
1006 PM CDT FRI APR 30 2010
...A TORNADO WARNING REMAINS IN EFFECT FOR RANDOLPH COUNTY UNTIL 1030
PM CDT...
AT 1002 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR STE. GENEVIEVE...MOVING NORTHEAST AT 40 MPH.
IN ADDITION...DAMAGING WINDS UP TO 65 MPH ARE ALSO POSSIBLE WITH
THIS STORM.
LOCATIONS IMPACTED INCLUDE...
RED BUD...SPARTA...EVANSVILLE...BREMEN...BALDWIN...NEW PALESTINE...
RUMA...WALSH...PRESTON...PRAIRIE...BLAIR...HOUSTON AND EDEN.
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 3805 8960 3789 8989 3796 8996 3796 8997
3803 9009 3812 9009 3814 9004 3822 9001
3819 8973
TIME...MOT...LOC 0306Z 225DEG 37KT 3805 8997
$$
TILLY748
WWUS53 KLSX 010327
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1027 PM CDT FRI APR 30 2010
ILC157-010337-
/O.EXP.KLSX.TO.W.0040.000000T0000Z-100501T0330Z/
RANDOLPH IL-
1027 PM CDT FRI APR 30 2010
...THE TORNADO WARNING FOR RANDOLPH COUNTY WILL BE ALLOWED TO EXPIRE
AT 1030 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 300 AM.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.
LAT...LON 3805 8960 3789 8989 3796 8996 3796 8997
3803 9009 3812 9009 3814 9004 3822 9001
3819 8973
TIME...MOT...LOC 0327Z 217DEG 57KT 3818 8962
$$
TILLYThe 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, 9:23 PM CDT | Tornado Warning | LSX | Sainte Genevieve, Saint Francois | 37 min |
| May 1, 3:54 AM CDT | Flash Flood Watch | LSX | Crawford, Iron, Jefferson, Madison, Reynolds, Sainte Genevieve and 2 more | 23 hr |
| Apr 30, 9:25 PM CDT | Tornado Warning | LSX | Clinton, Madison, Saint Clair, Washington | 34 min |
Nearby
Tornado Warnings in Missouri, 2010Tornado Warnings in Illinois, 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.