Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 302, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Sep 7, 2012, 7:03 PM CDT for 5 counties in Missouri; Monroe County, Randolph County, Saint Clair County, Illinois. It was in force for 42 min. 1 report 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
- Sep 7, 2012, 7:03 PM CDT (00:03 UTC)
- Expired
- Sep 7, 2012, 7:45 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 Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Iron County, MO, Jefferson County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 95 km from the middle of the area, began a volume at 00:04 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 |
|---|---|---|---|
| Sep 7, 7:21 PM CDT | TSTM WND GST 40 | 2 Ene Rocky Ridge, MO |
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 |
|---|---|---|---|
| Sep 7, 2:35 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.1 hours before the alert went out and 288 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
- 723 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -113 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
554
WUUS53 KLSX 080003
SVRLSX
ILC133-157-163-MOC093-099-186-187-221-080045-
/O.NEW.KLSX.SV.W.0302.120908T0003Z-120908T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
703 PM CDT FRI SEP 7 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MONROE COUNTY IN SOUTHWEST ILLINOIS...
WESTERN RANDOLPH COUNTY IN SOUTHWEST ILLINOIS...
SOUTHERN ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS...
IRON COUNTY IN SOUTHEAST MISSOURI...
EASTERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI...
STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...
ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI...
SOUTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 745 PM CDT
* AT 700 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM ANTONIA TO OLYMPIAN VILLAGE TO 6 MILES
NORTHEAST OF BONNE TERRE TO BELLEVIEW...AND MOVING EAST AT 35 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...
FESTUS...DESLOGE...CRYSTAL CITY...BISMARCK...HERCULANEUM...
BARNHART...PEVELY...FARMINGTON...WATERLOO...STE. GENEVIEVE...RED
BUD...PARK HILLS...PILOT KNOB...IRON MOUNTAIN...VALMEYER...
FOUNTAIN...BLOOMSDALE...ROCKY RIDGE...NEW DESIGN AND WEINGARTEN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3761 9090 3798 9054 3816 9051 3840 9058
3840 8981 3815 8974 3797 8978 3786 8990
3787 8994 3782 8999 3765 9014 3764 9053
3763 9054
TIME...MOT...LOC 0003Z 270DEG 31KT 3831 9044 3816 9038
3798 9042 3771 9072
HAIL...<.75IN
WIND...60 MPH
$$
TRUETT3 follow-up statements
033
WWUS53 KLSX 080022 RRA
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
722 PM CDT FRI SEP 7 2012
MOC221-080031-
/O.CAN.KLSX.SV.W.0302.000000T0000Z-120908T0045Z/
WASHINGTON MO-
722 PM CDT FRI SEP 7 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WASHINGTON COUNTY
IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
LAT...LON 3764 9074 3791 9044 3818 9043 3840 9058
3840 9034 3839 9034 3840 9032 3840 8981
3815 8974 3797 8978 3787 8989 3787 8994
3782 8999 3765 9014 3764 9053 3763 9054
TIME...MOT...LOC 0021Z 270DEG 31KT 3831 9024 3815 9012
3796 9017 3771 9052
$$
ILC133-157-163-MOC093-099-186-187-080045-
/O.CON.KLSX.SV.W.0302.000000T0000Z-120908T0045Z/
MONROE IL-RANDOLPH IL-ST. CLAIR IL-IRON MO-JEFFERSON MO-
STE. GENEVIEVE MO-ST. FRANCOIS MO-
722 PM CDT FRI SEP 7 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ST.
FRANCOIS...STE. GENEVIEVE...EASTERN JEFFERSON...IRON...SOUTHERN ST.
CLAIR...WESTERN RANDOLPH AND MONROE COUNTIES UNTIL 745 PM CDT...
AT 717 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM VALMEYER TO 8 MILES SOUTH OF NEW DESIGN TO ROCKY
RIDGE TO IRON MOUNTAIN...AND MOVING EAST AT 35 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED. AREA FOR GREATEST POTENTIAL OF WIND
DAMAGE IS ALONG AND EAST OF A MONROE CITY...BLOOMDALE LINE.
KIDD...PRAIRIE DU ROCHER...AND RUMA IS IN THE DIRECT PATH OF THE
STRONGEST WINDS.
IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
BROKEN.
LOCATIONS IMPACTED INCLUDE...
WATERLOO...STE. GENEVIEVE...RED BUD...WEINGARTEN...NEW DESIGN...KNOB
LICK...EVANSVILLE...COFFMAN...BALDWIN...ST. MARY...WOMAC...NEW
ATHENS...NEW HANDOVER...WARTBURG...PRAIRIE DU ROCHER...BURKSVILLE...
AMES...KELLOGG...MODOC AND RUMA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3764 9074 3791 9044 3818 9043 3840 9058
3840 9034 3839 9034 3840 9032 3840 8981
3815 8974 3797 8978 3787 8989 3787 8994
3782 8999 3765 9014 3764 9053 3763 9054
TIME...MOT...LOC 0021Z 270DEG 31KT 3831 9024 3815 9012
3796 9017 3771 9052
HAIL...<.75IN
WIND...60 MPH
$$
TRUETT575
WWUS53 KLSX 080032 RRA
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
732 PM CDT FRI SEP 7 2012
MOC093-099-080042-
/O.CAN.KLSX.SV.W.0302.000000T0000Z-120908T0045Z/
IRON MO-JEFFERSON MO-
732 PM CDT FRI SEP 7 2012
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN JEFFERSON AND IRON
COUNTIES IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
LAT...LON 3796 9029 3810 9029 3813 9025 3817 9029
3835 9030 3834 8979 3815 8974 3797 8978
3787 8989 3787 8994 3782 8999 3765 9014
3764 9053
TIME...MOT...LOC 0032Z 270DEG 31KT 3831 9012 3815 9000
3796 9005 3771 9040
$$
ILC133-157-163-MOC186-187-080045-
/O.CON.KLSX.SV.W.0302.000000T0000Z-120908T0045Z/
MONROE IL-RANDOLPH IL-ST. CLAIR IL-STE. GENEVIEVE MO-ST. FRANCOIS MO-
732 PM CDT FRI SEP 7 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ST.
FRANCOIS...STE. GENEVIEVE...SOUTHERN ST. CLAIR...WESTERN
RANDOLPH AND SOUTHERN MONROE COUNTIES UNTIL 745 PM CDT...
AT 730 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM WATERLOO TO RED BUD TO STE. GENEVIEVE TO KNOB
LICK...AND MOVING EAST AT 35 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...
RED BUD...KNOB LICK...EVANSVILLE...COFFMAN...BALDWIN...ST. MARY...
WOMAC...NEW ATHENS...RIVER AUX VASES...ROOTS...PRAIRIE...
LIBERTYVILLE...HECKER...ELLIS GROVE...PRESTON...WALSH...KASKASKIA...
MINNITH...NEW PALESTINE AND HOUSTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3796 9029 3810 9029 3813 9025 3817 9029
3835 9030 3834 8979 3815 8974 3797 8978
3787 8989 3787 8994 3782 8999 3765 9014
3764 9053
TIME...MOT...LOC 0032Z 270DEG 31KT 3831 9012 3815 9000
3796 9005 3771 9040
HAIL...<.75IN
WIND...60 MPH
$$
TRUETT681
WWUS53 KLSX 080048
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
748 PM CDT FRI SEP 7 2012
ILC133-157-163-MOC186-187-080057-
/O.EXP.KLSX.SV.W.0302.000000T0000Z-120908T0045Z/
MONROE IL-RANDOLPH IL-ST. CLAIR IL-STE. GENEVIEVE MO-ST. FRANCOIS MO-
748 PM CDT FRI SEP 7 2012
...THE SEVERE THUNDERSTORM WARNING FOR ST. FRANCOIS...WESTERN STE.
GENEVIEVE...EXTREME SOUTHWEST ST. CLAIR...WESTERN RANDOLPH
AND SOUTHERN MONROE COUNTIES HAS EXPIRED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.
LAT...LON 3796 9029 3810 9029 3813 9025 3817 9029
3835 9030 3834 8979 3815 8974 3797 8978
3787 8989 3787 8994 3782 8999 3765 9014
3764 9053
TIME...MOT...LOC 0032Z 270DEG 31KT 3831 9012 3815 9000
3796 9005 3771 9040
$$
TRUETTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 7:11 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison, Reynolds | 49 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 |
| Sep 7, 7:03 PM CDT | Flash Flood Warning | LSX | Bond | 3 hr |
| Sep 7, 7:06 PM CDT | Tornado Warning | LSX | Washington | 24 min |
| Sep 7, 7:25 PM CDT | Areal Flood Advisory | LSX | Madison, Saint Clair | 6 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 2012Severe Thunderstorm Warnings in Illinois, 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.