Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 330, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Oct 17, 2012, 4:03 PM CDT for 6 counties in Missouri. It was in force for 42 min. 8 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, 4:03 PM CDT (21:03 UTC)
- Expired
- Oct 17, 2012, 4:45 PM CDT
- In force
- 42 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Crawford County, MO, Franklin County, MO, Gasconade County, MO, Montgomery County, MO, Osage County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 86 km from the middle of the area, began a volume at 21:06 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, 4:05 PM CDT | TSTM WND DMG | Owensville, MO | SMALL TREE LIMBS DOWN IN OWENSVILLE. |
| Oct 17, 4:15 PM CDT | TSTM WND DMG | Rosebud, MO | TREES DOWN IN ROSEBUD. |
| Oct 17, 4:15 PM CDT | HAIL 0.5 | Rosebud, MO | 8 TO 10 INCH DIAMETER LIMBS BLOWN OUT OF THE TOPS OF TREES |
| Oct 17, 4:18 PM CDT | TSTM WND DMG | Gerald, MO | NUMEROUS TREES AND LARGE TREE LIMBS ALONG WITH A FEW POWER LINES DOWNED IN THE GERALD AREA. |
| Oct 17, 4:20 PM CDT | TSTM WND DMG | Rosebud, MO | 8-10 INCH DIAMETER LIMBS DOWN OFF OF TREE TOPS. 0.5 INCH HAIL LASTED ABOUT 2 MINUTES. |
| Oct 17, 4:24 PM CDT | TSTM WND DMG | Gerald, MO | NUMEROUS TREES AND LARGE TREE LIMBS ALONG WITH A FEW POWER LINES DOWNED IN THE GERALD AREA. |
| Oct 17, 4:30 PM CDT | TSTM WND DMG | Warrenton, MO | POWER LINES DOWN THROUGHOUT THE COUNTY WITH A REPORT OF AN ELECTIRICAL FIRE. |
| Oct 17, 4:42 PM CDT | TSTM WND DMG | Warrenton, MO | POWER LINES DOWN THROUGHOUT THE COUNTY WITH A REPORT OF AN ELECTIRICAL FIRE. |
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
Springfield, MO (KSGF), launched 12:00Z, 9.1 hours before the alert went out and 255 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 745 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 248 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
389
WUUS53 KLSX 172103
SVRLSX
MOC055-071-073-139-151-219-172145-
/O.NEW.KLSX.SV.W.0330.121017T2103Z-121017T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
403 PM CDT WED OCT 17 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN CRAWFORD COUNTY IN EAST CENTRAL MISSOURI...
WESTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
SOUTHEASTERN OSAGE COUNTY IN CENTRAL MISSOURI...
WARREN COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 445 PM CDT
* AT 402 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM BIG SPRING TO DRAKE TO ROLLA...AND MOVING
NORTHEAST AT 50 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
* LOCATIONS IMPACTED INCLUDE...
HERMANN...OWENSVILLE...WARRENTON...NEW HAVEN...CUBA...WRIGHT
CITY...BLAND...SWISS...JONESBURG...DRAKE...ROSEBUD...TRUESDALE...
GERALD...TRELOAR...CANAAN...BERGER...OAK HILL...HOLSTEIN AND
LESLIE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3843 9171 3888 9152 3887 9100 3798 9144
3797 9153 3815 9153 3816 9165 3828 9165
3830 9182
TIME...MOT...LOC 2103Z 246DEG 43KT 3883 9138 3850 9152
3800 9180
HAIL...<.75IN
WIND...60 MPH
$$
KANOFSKY4 follow-up statements
809
WWUS53 KLSX 172110
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
410 PM CDT WED OCT 17 2012
MOC055-071-073-139-151-219-172145-
/O.CON.KLSX.SV.W.0330.000000T0000Z-121017T2145Z/
CRAWFORD MO-FRANKLIN MO-GASCONADE MO-MONTGOMERY MO-OSAGE MO-WARREN
410 PM CDT WED OCT 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WARREN...
SOUTHEASTERN OSAGE...MONTGOMERY...GASCONADE...WESTERN FRANKLIN AND
NORTHWESTERN CRAWFORD COUNTIES UNTIL 445 PM CDT...
AT 406 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM JONESBURG TO DRAKE TO ROLLA...AND MOVING
NORTHEAST AT 50 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS REPORTED TREE LIMBS DOWN IN
OWENSVILLE.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
OWENSVILLE...WARRENTON...NEW HAVEN...WRIGHT CITY...ROSEBUD...
TRUESDALE...GERALD...TRELOAR...BERGER...HOLSTEIN...OAK HILL AND
LESLIE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3834 9169 3843 9171 3888 9152 3887 9100
3798 9144 3797 9153 3815 9153 3816 9165
3828 9165
TIME...MOT...LOC 2110Z 246DEG 43KT 3886 9128 3853 9142
3803 9170
HAIL...<.75IN
WIND...60 MPH
$$
KANOFSKY516
WWUS53 KLSX 172120
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
420 PM CDT WED OCT 17 2012
MOC151-172130-
/O.CAN.KLSX.SV.W.0330.000000T0000Z-121017T2145Z/
OSAGE MO-
420 PM CDT WED OCT 17 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OSAGE COUNTY IS
CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
LAT...LON 3815 9153 3816 9165 3828 9165 3859 9165
3888 9152 3887 9100 3798 9144 3797 9153
TIME...MOT...LOC 2120Z 246DEG 43KT 3891 9114 3858 9128
3808 9157
$$
MOC055-071-073-139-219-172145-
/O.CON.KLSX.SV.W.0330.000000T0000Z-121017T2145Z/
CRAWFORD MO-FRANKLIN MO-GASCONADE MO-MONTGOMERY MO-WARREN MO-
420 PM CDT WED OCT 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WARREN...
MONTGOMERY...GASCONADE...WESTERN FRANKLIN AND NORTHWESTERN CRAWFORD
COUNTIES UNTIL 445 PM CDT...
AT 415 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM 6 MILES NORTHWEST OF WARRENTON TO 7 MILES EAST OF
SWISS TO ST. JAMES...AND MOVING NORTHEAST AT 50 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS REPORTED TREE LIMBS DOWN IN
OWENSVILLE.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
WARRENTON...NEW HAVEN...WRIGHT CITY...TRUESDALE...GERALD...TRELOAR...
HOLSTEIN...OAK HILL AND LESLIE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3815 9153 3816 9165 3828 9165 3859 9165
3888 9152 3887 9100 3798 9144 3797 9153
TIME...MOT...LOC 2120Z 246DEG 43KT 3891 9114 3858 9128
3808 9157
HAIL...<.75IN
WIND...60 MPH
$$
KANOFSKY254
WWUS53 KLSX 172128
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
428 PM CDT WED OCT 17 2012
MOC055-071-073-139-219-172145-
/O.CON.KLSX.SV.W.0330.000000T0000Z-121017T2145Z/
CRAWFORD MO-FRANKLIN MO-GASCONADE MO-MONTGOMERY MO-WARREN MO-
428 PM CDT WED OCT 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WARREN...
MONTGOMERY...GASCONADE...WESTERN FRANKLIN AND NORTHWESTERN CRAWFORD
COUNTIES UNTIL 445 PM CDT...
AT 423 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM HAWK POINT TO NEW HAVEN TO 7 MILES WEST OF
CUBA...AND MOVING NORTHEAST AT 50 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...TRAINED WEATHER SPOTTERS REPORTED TREE LIMBS DOWN IN
OWENSVILLE.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
WRIGHT CITY AND LESLIE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3815 9153 3815 9155 3816 9155 3828 9150
3858 9146 3888 9137 3887 9100 3798 9144
3797 9153
TIME...MOT...LOC 2127Z 246DEG 43KT 3894 9104 3861 9118
3811 9147
HAIL...<.75IN
WIND...60 MPH
$$
KANOFSKY800
WWUS53 KLSX 172143
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
443 PM CDT WED OCT 17 2012
MOC055-071-073-139-219-172153-
/O.EXP.KLSX.SV.W.0330.000000T0000Z-121017T2145Z/
CRAWFORD MO-FRANKLIN MO-GASCONADE MO-MONTGOMERY MO-WARREN MO-
443 PM CDT WED OCT 17 2012
...THE SEVERE THUNDERSTORM WARNING FOR WARREN...MONTGOMERY...
GASCONADE...WESTERN FRANKLIN AND NORTHWESTERN CRAWFORD COUNTIES WILL
EXPIRE AT 445 PM CDT...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM CDT.
LAT...LON 3815 9153 3815 9155 3816 9155 3828 9150
3858 9146 3888 9137 3887 9100 3798 9144
3797 9153
TIME...MOT...LOC 2143Z 246DEG 43KT 3901 9081 3869 9095
3819 9125
$$
KANOFSKYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 4:58 PM CDT | Tornado Warning | LSX | Lincoln, Saint Charles | 32 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
Severe Thunderstorm Warnings in Missouri, 2012Every severe thunderstorm warning 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.