Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 334, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Oct 22, 2012, 6:20 AM CDT for Lewis County, Marion County, Missouri; Adams County, Illinois. It was in force for 55 min. 9 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 22, 2012, 6:20 AM CDT (11:20 UTC)
- Expired
- Oct 22, 2012, 7:15 AM CDT
- In force
- 55 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Adams County, IL, Lewis County, MO, Marion County, MO
The radar
The St Louis radar (KLSX), 137 km from the middle of the area, began a volume at 11:21 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 22, 6:25 AM CDT | HAIL 1 | La Grange, MO | |
| Oct 22, 6:28 AM CDT | HAIL 0.7 | Palmyra, MO | |
| Oct 22, 6:34 AM CDT | HAIL 0.25 | Taylor, MO | |
| Oct 22, 6:36 AM CDT | HAIL 0.7 | Quincy, IL | ALSO STRONG WINDS. |
| Oct 22, 6:38 AM CDT | HAIL 0.75 | Quincy, IL | |
| Oct 22, 6:42 AM CDT | HAIL 0.7 | 1 Ne Quincy, IL | |
| Oct 22, 6:45 AM CDT | HAIL 0.75 | Quincy, IL | |
| Oct 22, 6:50 AM CDT | HAIL 0.5 | 4 Ne Burton, IL | REPORTED BY THE ARPT MNGR |
| Oct 22, 7:10 AM CDT | HAIL 0.25 | Camp Point, IL | 3 MINUTES OF PEA SIZED HAIL. START TIME ESTIMATED FROM RADAR |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 11.3 hours before the alert went out and 207 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
- 20 J/kg
- Mixed-layer CIN
- -405 J/kg
- Mixed-layer LCL
- 1138 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
The text
As transmitted, in the capitals the NWS used until 2016.
819
WUUS53 KLSX 221120
SVRLSX
ILC001-MOC111-127-221215-
/O.NEW.KLSX.SV.W.0334.121022T1120Z-121022T1215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
620 AM CDT MON OCT 22 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
ADAMS COUNTY IN WEST CENTRAL ILLINOIS...
SOUTHEASTERN LEWIS COUNTY IN NORTHEAST MISSOURI...
EASTERN MARION COUNTY IN NORTHEAST MISSOURI...
* UNTIL 715 AM CDT
* AT 618 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTHWEST
OF PALMYRA...AND MOVING NORTHEAST AT 40 MPH.
HAZARD...QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS.
* LOCATIONS IMPACTED INCLUDE...
QUINCY...MAYWOOD...FALL CREEK...LA GRANGE...PAYSON...BEVERLY...
MENDON...CAMP POINT...CLAYTON...GOLDEN...TAYLOR...MARBLEHEAD...
PLAINVILLE...BURTON...ADAMS...RICHFIELD...URSA...FOWLER...LIBERTY
AND KINGSTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 3976 9092 3976 9136 3969 9143 3969 9166
4009 9159 4019 9092
TIME...MOT...LOC 1120Z 232DEG 36KT 3987 9157
HAIL...1.00IN
WIND...<50 MPH
$$
MILLER3 follow-up statements
786
WWUS53 KLSX 221142
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
642 AM CDT MON OCT 22 2012
MOC111-127-221151-
/O.CAN.KLSX.SV.W.0334.000000T0000Z-121022T1215Z/
LEWIS MO-MARION MO-
642 AM CDT MON OCT 22 2012
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MARION AND
SOUTHEASTERN LEWIS COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4019 9092 3987 9092 3976 9136 3978 9137
3979 9136 3981 9138 3991 9143 3993 9142
3994 9144 4003 9148
TIME...MOT...LOC 1141Z 241DEG 34KT 3995 9134
$$
ILC001-221215-
/O.CON.KLSX.SV.W.0334.000000T0000Z-121022T1215Z/
ADAMS IL-
642 AM CDT MON OCT 22 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ADAMS COUNTY
UNTIL 715 AM CDT...
AT 639 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR QUINCY...AND
MOVING NORTHEAST AT 40 MPH.
HAZARD...QUARTER SIZE HAIL.
SOURCE...AT 6:25 AM A TRAINED WEATHER SPOTTER IN LA GRANGE REPORTED
QUARTER SIZE HAIL.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS.
LOCATIONS IMPACTED INCLUDE...
CAMP POINT...GOLDEN...CLAYTON...BURTON...ADAMS...FOWLER...LIBERTY...
PALOMA...COLUMBUS...COATSBURG...KELLERVILLE...CHATTON AND LA PRAIRIE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4019 9092 3987 9092 3976 9136 3978 9137
3979 9136 3981 9138 3991 9143 3993 9142
3994 9144 4003 9148
TIME...MOT...LOC 1141Z 241DEG 34KT 3995 9134
HAIL...1.00IN
WIND...<50 MPH
$$
MILLER704
WWUS53 KLSX 221204
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
704 AM CDT MON OCT 22 2012
ILC001-221215-
/O.CON.KLSX.SV.W.0334.000000T0000Z-121022T1215Z/
ADAMS IL-
704 AM CDT MON OCT 22 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ADAMS COUNTY
UNTIL 715 AM CDT...
AT 701 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTHWEST
OF CAMP POINT...AND MOVING NORTHEAST AT 40 MPH.
HAZARD...QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS.
LOCATIONS IMPACTED INCLUDE...
CAMP POINT...CLAYTON...GOLDEN...KELLERVILLE AND LA PRAIRIE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4019 9092 3987 9092 3976 9136 3978 9137
3979 9136 3981 9138 3991 9143 3993 9142
3994 9144 4006 9129
TIME...MOT...LOC 1204Z 241DEG 34KT 3996 9110
HAIL...1.00IN
WIND...<50 MPH
$$
GLASS888
WWUS53 KLSX 221216
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
716 AM CDT MON OCT 22 2012
ILC001-221225-
/O.EXP.KLSX.SV.W.0334.000000T0000Z-121022T1215Z/
ADAMS IL-
716 AM CDT MON OCT 22 2012
...THE SEVERE THUNDERSTORM WARNING FOR ADAMS COUNTY HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE
WITH THIS THUNDERSTORM AS IT IMPACTS THE KELLERVILLE AND CLAYTON
AREAS.
LAT...LON 4019 9092 3987 9092 3976 9136 3978 9137
3979 9136 3981 9138 3991 9143 3993 9142
3994 9144 4006 9129
TIME...MOT...LOC 1204Z 241DEG 34KT 3996 9110
$$
GLASSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 22, 6:56 AM CDT | Severe Thunderstorm Warning | LSX | Pike, Ralls | 49 min |
| Oct 22, 2:04 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 24 min |
| Oct 22, 7:43 AM CDT | Severe Thunderstorm Warning | LSX | Pike | 47 min |
| Oct 22, 9:30 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin | 45 min |
| Oct 22, 10:34 AM CDT | Severe Thunderstorm Warning | LSX | Madison | 41 min |
| Oct 22, 11:38 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Madison, Saint Clair | 37 min |
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.