Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 303, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Sep 7, 2012, 7:11 PM CDT for Iron County, Madison County, Reynolds County, Missouri. It was in force for 49 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
- Sep 7, 2012, 7:11 PM CDT (00:11 UTC)
- Expired
- Sep 7, 2012, 8:00 PM CDT
- In force
- 49 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Iron County, MO, Madison County, MO, Reynolds County, MO
The radar
The St Louis radar (KLSX), 161 km from the middle of the area, began a volume at 00:13 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 |
|---|---|---|---|
| Sep 7, 2:35 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 0.2 hours before the alert went out and 276 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
- 2285 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1708 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 5.2
The text
As transmitted, in the capitals the NWS used until 2016.
242
WUUS53 KLSX 080011
SVRLSX
MOC093-123-179-080100-
/O.NEW.KLSX.SV.W.0303.120908T0011Z-120908T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
711 PM CDT FRI SEP 7 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
IRON COUNTY IN SOUTHEAST MISSOURI...
MADISON COUNTY IN SOUTHEAST MISSOURI...
EASTERN REYNOLDS COUNTY IN SOUTHEAST MISSOURI...
* UNTIL 800 PM CDT
* AT 708 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM BELLEVIEW TO ELLINGTON...AND MOVING EAST AT 65
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...
IRONTON...FREDERICKTOWN...GLOVER...PILOT KNOB...ARCADIA...
ANNAPOLIS...ROSELLE...SACO...JUNCTION CITY...BUCKHORN...MARQUAND...
HOGAN...CHLORIDE...SABULA...VULCAN...DES ARC...CATHERINE PLACE AND
MINE LA MOTTE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3705 9096 3709 9097 3710 9099 3763 9076
3764 9014 3741 9014 3731 9016 3731 9054
3727 9055 3727 9073 3717 9073 3713 9077
3705 9077
TIME...MOT...LOC 0011Z 279DEG 54KT 3762 9070 3717 9088
HAIL...<.75IN
WIND...60 MPH
$$
GLASS3 follow-up statements
192
WWUS53 KLSX 080023
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
723 PM CDT FRI SEP 7 2012
MOC093-123-179-080100-
/O.CON.KLSX.SV.W.0303.000000T0000Z-120908T0100Z/
IRON MO-MADISON MO-REYNOLDS MO-
723 PM CDT FRI SEP 7 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
REYNOLDS...MADISON AND EASTERN IRON COUNTIES UNTIL 800 PM CDT...
AT 721 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM ROSELLE TO GARWOOD...AND MOVING EAST AT 60 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
FREDERICKTOWN...SACO...JUNCTION CITY...BUCKHORN...MARQUAND...DES
ARC...CATHERINE PLACE AND MINE LA MOTTE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3705 9096 3725 9087 3739 9078 3763 9076
3764 9014 3741 9014 3731 9016 3731 9054
3727 9055 3727 9073 3717 9073 3713 9077
3705 9077
TIME...MOT...LOC 0023Z 279DEG 54KT 3762 9047 3707 9083
HAIL...<.75IN
WIND...60 MPH
$$
GLASS104
WWUS53 KLSX 080041
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
741 PM CDT FRI SEP 7 2012
MOC093-179-080050-
/O.CAN.KLSX.SV.W.0303.000000T0000Z-120908T0100Z/
IRON MO-REYNOLDS MO-
741 PM CDT FRI SEP 7 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN REYNOLDS AND
EASTERN IRON COUNTIES IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
LAT...LON 3743 9055 3762 9053 3764 9014 3741 9014
3731 9016 3731 9054
TIME...MOT...LOC 0040Z 269DEG 44KT 3762 9028 3731 9046
$$
MOC123-080100-
/O.CON.KLSX.SV.W.0303.000000T0000Z-120908T0100Z/
MADISON MO-
741 PM CDT FRI SEP 7 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MADISON COUNTY
UNTIL 800 PM CDT...
AT 738 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM JUNCTION CITY TO SACO...AND MOVING EAST AT 50
MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
FREDERICKTOWN...JUNCTION CITY...BUCKHORN AND MARQUAND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3743 9055 3762 9053 3764 9014 3741 9014
3731 9016 3731 9054
TIME...MOT...LOC 0040Z 269DEG 44KT 3762 9028 3731 9046
HAIL...<.75IN
WIND...60 MPH
$$
GLASS312
WWUS53 KLSX 080058
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
758 PM CDT FRI SEP 7 2012
MOC123-080108-
/O.EXP.KLSX.SV.W.0303.000000T0000Z-120908T0100Z/
MADISON MO-
758 PM CDT FRI SEP 7 2012
...THE SEVERE THUNDERSTORM WARNING FOR MADISON COUNTY WILL EXPIRE AT
800 PM CDT...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
LAT...LON 3743 9055 3762 9053 3764 9014 3741 9014
3731 9016 3731 9054
TIME...MOT...LOC 0058Z 269DEG 44KT 3760 9000 3729 9019
$$
GLASSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 7:03 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Jefferson, Sainte Genevieve, Saint Francois, Washington | 42 min |
| Sep 7, 7:35 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve, Saint Francois | 20 min |
| Sep 7, 8:09 PM CDT | Areal Flood Advisory | LSX | Saint Francois, Washington | 6 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.