Alert archive / Missouri / Tornado Warnings in 2012
Tornado Warning 27, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Oct 17, 2012, 4:58 PM CDT for Lincoln County, Saint Charles County, Missouri; Calhoun County, Illinois. It was in force for 32 min. 3 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
- Oct 17, 2012, 4:58 PM CDT (21:58 UTC)
- Expired
- Oct 17, 2012, 5:30 PM CDT
- In force
- 32 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Calhoun County, IL, Lincoln County, MO, Saint Charles County, MO
The radar
The St Louis radar (KLSX), 29 km from the middle of the area, began a volume at 21:58 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 |
|---|---|---|---|
| Oct 17, 4:58 PM CDT | TSTM WND GST 40 | 3 N Flint Hill, MO | HEAVY RAIN WITH WIND GUST TO 40 MPH. |
| Oct 17, 5:05 PM CDT | TSTM WND DMG | 2 S Old Monroe, MO | WINDS ESTIMATED TO 60 MPH WITH 3-INCH LIMBS DOWN. |
| Oct 17, 5:10 PM CDT | TSTM WND DMG | 2 S Old Monroe, MO | WINDS ESTIMATED TO 60 MPH WITH 3-INCH LIMBS DOWN. |
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 |
|---|---|---|---|
| Oct 17, 1:58 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.0 hours before the alert went out and 220 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
- 1209 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 158 m²/s²
- 0-3 km storm-relative helicity
- 269 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
844
WFUS53 KLSX 172158
TORLSX
ILC013-MOC113-183-172230-
/O.NEW.KLSX.TO.W.0027.121017T2158Z-121017T2230Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
458 PM CDT WED OCT 17 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
CALHOUN COUNTY IN SOUTHWEST ILLINOIS...
SOUTHEASTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI...
NORTH CENTRAL ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 530 PM CDT
* AT 453 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR WENTZVILLE...AND MOVING NORTHEAST AT 40
MPH.
HAZARD...DEVELOPING TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...SIGNIFICANT HOUSE AND BUILDING DAMAGE POSSIBLE. MOBILE
HOMES COMPLETELY DESTROYED IF HIT. SOME TREES UPROOTED OR
SNAPPED. VEHICLES WILL LIKELY BE THROWN BY TORNADIC WINDS.
* LOCATIONS IMPACTED INCLUDE...
ST. PAUL...OLD MONROE...BEECHVILLE...GOLDEN EAGLE...BRUSSELS...
MEPPEN AND DEER PLAIN.
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 HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.
&&
LAT...LON 3903 9057 3899 9057 3895 9052 3889 9049
3879 9086 3890 9093 3905 9059
TIME...MOT...LOC 2158Z 240DEG 35KT 3887 9079
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
KANOFSKY2 follow-up statements
103
WWUS53 KLSX 172209
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
509 PM CDT WED OCT 17 2012
ILC013-MOC113-183-172230-
/O.CON.KLSX.TO.W.0027.000000T0000Z-121017T2230Z/
CALHOUN IL-LINCOLN MO-ST. CHARLES MO-
509 PM CDT WED OCT 17 2012
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTH CENTRAL ST.
CHARLES...SOUTHEASTERN LINCOLN AND CALHOUN COUNTIES UNTIL 530 PM
CDT...
AT 506 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR ST. PAUL...AND MOVING NORTHEAST AT 40 MPH.
HAZARD...DEVELOPING TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...SIGNIFICANT HOUSE AND BUILDING DAMAGE POSSIBLE. MOBILE HOMES
COMPLETELY DESTROYED IF HIT. SOME TREES UPROOTED OR SNAPPED.
VEHICLES WILL LIKELY BE THROWN BY TORNADIC WINDS.
LOCATIONS IMPACTED INCLUDE...
BEECHVILLE...GOLDEN EAGLE...BRUSSELS...MEPPEN AND DEER PLAIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.
&&
LAT...LON 3903 9057 3902 9057 3902 9058 3899 9057
3895 9052 3889 9049 3882 9075 3896 9080
3905 9059
TIME...MOT...LOC 2209Z 240DEG 35KT 3892 9067
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
KANOFSKY256
WWUS53 KLSX 172225
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
525 PM CDT WED OCT 17 2012
ILC013-MOC113-183-172235-
/O.EXP.KLSX.TO.W.0027.000000T0000Z-121017T2230Z/
CALHOUN IL-LINCOLN MO-ST. CHARLES MO-
525 PM CDT WED OCT 17 2012
...THE TORNADO WARNING FOR NORTH CENTRAL ST. CHARLES...SOUTHEASTERN
LINCOLN AND CALHOUN COUNTIES WILL EXPIRE AT 530 PM CDT...
THE STORM WHICH PROMPTED THE WARNING NO LONGER LOOKS CAPABLE OF
PRODUCING A TORNADO AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE
OR PROPERTY. HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS
THUNDERSTORM AND A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT.
IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM CDT.
LAT...LON 3903 9057 3902 9057 3902 9058 3899 9057
3895 9052 3889 9049 3882 9075 3896 9080
3905 9059
TIME...MOT...LOC 2225Z 240DEG 35KT 3900 9050
$$
KANOFSKYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 17, 4:03 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Montgomery, Osage, Warren | 42 min |
| Oct 17, 4:24 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Saint Charles, Warren, Washington | 51 min |
| Oct 17, 4:54 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Jefferson, Lincoln, Saint Charles, Saint Louis and 1 more | 51 min |
| Oct 17, 5:06 PM CDT | Tornado Warning | LSX | Saint Charles | 24 min |
| Oct 17, 5:23 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Charles, Sainte Genevieve, Saint Francois, Saint Louis, City of Saint Louis | 52 min |
Nearby
Tornado Warnings in Missouri, 2012Tornado Warnings in Illinois, 2012Every tornado warning in 2012Tornadoes in 2012
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.