Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 29, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 2, 2012, 5:56 AM CST for 4 counties in Missouri; 4 counties in Illinois. It was in force for 49 min. 14 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
- Mar 2, 2012, 5:56 AM CST (11:56 UTC)
- Expired
- Mar 2, 2012, 6:45 AM CST
- In force
- 49 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Calhoun County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, City of Saint Louis, MO, Lincoln County, MO, Saint Charles County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 51 km from the middle of the area, began a volume at 11:58 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 |
|---|---|---|---|
| Mar 2, 6:03 AM CST | HAIL 0.5 | Hazelwood, MO | |
| Mar 2, 6:04 AM CST | HAIL 1 | Florissant, MO | |
| Mar 2, 6:09 AM CST | HAIL 1.75 | 1 N Florissant, MO | |
| Mar 2, 6:19 AM CST | HAIL 1 | Alton, IL | |
| Mar 2, 6:20 AM CST | HAIL 1 | Godfrey, IL | |
| Mar 2, 6:22 AM CST | HAIL 0.25 | Godfrey, IL | PEA SIZE HAIL COVERING THE GROUND |
| Mar 2, 6:22 AM CST | HAIL 1 | Godfrey, IL | |
| Mar 2, 6:22 AM CST | HAIL 1 | Wood River, IL | |
| Mar 2, 6:24 AM CST | HAIL 0.75 | Wood River, IL | |
| Mar 2, 6:24 AM CST | HAIL 1.75 | Bethalto, IL | |
| Mar 2, 6:25 AM CST | HAIL 0.7 | Glen Carbon, IL | |
| Mar 2, 6:25 AM CST | HAIL 1 | Edwardsville, IL | |
| Mar 2, 6:29 AM CST | HAIL 1.25 | Alton, IL | |
| Mar 2, 6:51 AM CST | HAIL 1.25 | Harvester, 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 |
|---|---|---|---|
| Mar 2, 2:07 AM CST | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 2, 5:52 AM CST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 11.9 hours before the alert went out and 193 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
- 2012 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 380 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
207 WUUS53 KLSX 021156 SVRLSX ILC013-083-117-119-MOC113-183-189-510-021245- /O.NEW.KLSX.SV.W.0029.120302T1156Z-120302T1245Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 556 AM CST FRI MAR 2 2012 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CALHOUN COUNTY IN SOUTHWEST ILLINOIS... SOUTHERN JERSEY COUNTY IN SOUTHWEST ILLINOIS... SOUTHWESTERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS... MADISON COUNTY IN SOUTHWEST ILLINOIS... SOUTHEASTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI... EASTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI... NORTHERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI... NORTHERN ST. LOUIS CITY IN EAST CENTRAL MISSOURI... * UNTIL 645 AM CST * AT 554 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR ST. CHARLES...AND MOVING NORTHEAST AT 60 MPH. QUARTER SIZE HAIL HAS BEEN REPORTED WITH THIS STORM. * LOCATIONS IMPACTED INCLUDE... ST. ANN...OVERLAND...UNIVERSITY CITY...WOODSON TERRACE...LAMBERT FIELD...ST. JOHN...BEL-RIDGE...HAZELWOOD...BERKELEY...KINLOCH... HILLSDALE...NORMANDY...COOL VALLEY...NORTHWOODS...FERGUSON... FLORISSANT...JENNINGS...DELLWOOD...BLACK JACK AND BELLEFONTAINE NEIGHBORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 3880 8968 3859 9057 3897 9081 3924 8996 TIME...MOT...LOC 1156Z 245DEG 52KT 3881 9046 WIND...HAIL <50MPH 1.00IN $$ KANOFSKY
2 follow-up statements
216
WWUS53 KLSX 021210
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
610 AM CST FRI MAR 2 2012
ILC013-MOC113-021218-
/O.CAN.KLSX.SV.W.0029.000000T0000Z-120302T1245Z/
CALHOUN IL-LINCOLN MO-
610 AM CST FRI MAR 2 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LINCOLN AND
CALHOUN COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3865 9031 3891 9050 3897 9046 3896 9053
3904 9058 3924 8996 3880 8968
TIME...MOT...LOC 1208Z 245DEG 52KT 3888 9026
$$
ILC083-117-119-MOC183-189-510-021245-
/O.CON.KLSX.SV.W.0029.000000T0000Z-120302T1245Z/
JERSEY IL-MACOUPIN IL-MADISON IL-ST. CHARLES MO-ST. LOUIS MO-
ST. LOUIS CITY MO-
610 AM CST FRI MAR 2 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN ST.
LOUIS CITY...NORTHEASTERN ST. LOUIS...NORTHEASTERN ST. CHARLES...
MADISON...SOUTHWESTERN MACOUPIN AND SOUTHERN JERSEY COUNTIES UNTIL
645 AM CST...
AT 607 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL. THIS
STORM WAS LOCATED NEAR WEST ALTON...OR 5 MILES NORTH OF BLACK JACK...
MOVING NORTHEAST AT 60 MPH.
LOCATIONS IMPACTED INCLUDE...
GRANITE CITY...JERSEYVILLE...PONTOON BEACH...ALTON...GODFREY...WOOD
RIVER...GLEN CARBON...BETHALTO...EDWARDSVILLE...WEST ALTON...
HARTFORD...ROXANA...BRIGHTON...DORSEY...SHIPMAN...CARPENTER...
PRAIRIETOWN...BUNKER HILL...MARINE AND WORDEN.
GOLF BALL SIZE HAIL WAS REPORTED IN FLORISSANT AT 604 AM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3865 9031 3891 9050 3897 9046 3896 9053
3904 9058 3924 8996 3880 8968
TIME...MOT...LOC 1208Z 245DEG 52KT 3888 9026
WIND...HAIL <50MPH 1.00IN
$$
KANOFSKY304
WWUS53 KLSX 021226
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
626 AM CST FRI MAR 2 2012
MOC183-189-510-021236-
/O.CAN.KLSX.SV.W.0029.000000T0000Z-120302T1245Z/
ST. CHARLES MO-ST. LOUIS MO-ST. LOUIS CITY MO-
626 AM CST FRI MAR 2 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ST. LOUIS CITY...
NORTHEASTERN ST. LOUIS AND NORTHEASTERN ST. CHARLES COUNTIES IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 3880 8968 3872 9006 3880 9012 3885 9011
3888 9017 3912 9033 3924 8996
TIME...MOT...LOC 1226Z 245DEG 52KT 3899 8995
$$
ILC083-117-119-021245-
/O.CON.KLSX.SV.W.0029.000000T0000Z-120302T1245Z/
JERSEY IL-MACOUPIN IL-MADISON IL-
626 AM CST FRI MAR 2 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MADISON...
SOUTHWESTERN MACOUPIN AND EAST CENTRAL JERSEY COUNTIES UNTIL 645 AM
CST...
AT 624 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL. THIS
STORM WAS LOCATED NEAR DORSEY...OR 6 MILES NORTHEAST OF BETHALTO...
MOVING NORTHEAST AT 60 MPH.
IN ADDITION...GOLF BALL SIZE HAIL WAS REPORTED IN BETHALTO WITH THIS
STORM.
LOCATIONS IMPACTED INCLUDE...
BUNKER HILL...MARINE...WORDEN...WILSONVILLE...ALHAMBRA...HAMEL...
ROYAL LAKES...PLAINVIEW...PRUETT...KAUFMAN AND DORCHESTER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3880 8968 3872 9006 3880 9012 3885 9011
3888 9017 3912 9033 3924 8996
TIME...MOT...LOC 1226Z 245DEG 52KT 3899 8995
WIND...HAIL <50MPH 1.75IN
$$
KANOFSKYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 2, 3:34 AM CST | Severe Thunderstorm Warning | LSX | Callaway, Cole, Moniteau, Osage | 41 min |
| Mar 2, 3:59 AM CST | Severe Thunderstorm Warning | LSX | Cole, Osage | 46 min |
| Mar 2, 4:08 AM CST | Severe Thunderstorm Warning | LSX | Callaway, Cole, Franklin, Gasconade, Montgomery, Osage and 1 more | 37 min |
| Mar 2, 4:37 AM CST | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Osage | 38 min |
| Mar 2, 4:41 AM CST | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Lincoln, Montgomery, Warren | 49 min |
| Mar 2, 5:10 AM CST | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Warren | 39 min |
| Mar 2, 5:13 AM CST | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles, Saint Louis, Warren | 47 min |
| Mar 2, 5:59 AM CST | Severe Thunderstorm Warning | LSX | Callaway | 28 min |
| Mar 2, 6:36 AM CST | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Pike | 39 min |
| Mar 2, 7:07 AM CST | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 30 min |
| Mar 2, 1:59 PM CST | Wind Advisory | LSX | Crawford, Franklin, Gasconade, Iron, Jefferson, Lincoln and 10 more | 4 hr |
| Mar 2, 6:36 AM CST | Severe Thunderstorm Warning | LSX | Bond, Fayette, Macoupin, Madison, Montgomery | 39 min |
| Mar 2, 7:14 AM CST | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 25 min |
| Mar 2, 9:49 AM CST | Severe Thunderstorm Warning | LSX | Clinton, Madison, Saint Clair | 41 min |
| Mar 2, 10:10 AM CST | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette | 50 min |
| Mar 2, 11:12 AM CST | Severe Thunderstorm Warning | LSX | Fayette, Marion | 16 min |
| Mar 2, 11:29 AM CST | Severe Thunderstorm Warning | LSX | Clinton, Randolph, Washington | 31 min |
| Mar 2, 11:41 AM CST | Severe Thunderstorm Warning | LSX | Marion | 49 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.