Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 28, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 2, 2012, 5:13 AM CST for 4 counties in Missouri. It was in force for 47 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, 5:13 AM CST (11:13 UTC)
- Expired
- Mar 2, 2012, 6:00 AM CST
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 2.5 in
- Wind
- 50.0 mph
Counties Franklin County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 9 km from the middle of the area, began a volume at 11:15 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, 5:26 AM CST | HAIL 0.88 | 3 E Marthasville, MO | |
| Mar 2, 5:26 AM CST | HAIL 1 | Dutzow, MO | |
| Mar 2, 5:26 AM CST | HAIL 1.5 | Dutzow, MO | |
| Mar 2, 5:35 AM CST | HAIL 1.25 | 1 S New Melle, MO | |
| Mar 2, 5:42 AM CST | HAIL 0.88 | 3 E Dardenne Prairie, MO | |
| Mar 2, 5:45 AM CST | HAIL 1 | Weldon Spring, MO | |
| Mar 2, 5:45 AM CST | HAIL 1.5 | Weldon Spring, MO | WENT OUT AND MEASURED AFTER STORM ENDED |
| Mar 2, 5:47 AM CST | HAIL 1 | Weldon Spring, MO | |
| Mar 2, 5:50 AM CST | HAIL 0.5 | St. Peters, MO | |
| Mar 2, 5:50 AM CST | HAIL 0.88 | Harvester, MO | |
| Mar 2, 5:51 AM CST | HAIL 1 | St. Peters, MO | 364 AND JUNGS STATION |
| Mar 2, 5:53 AM CST | HAIL 0.7 | St. Charles, MO | WEST PART OF TOWN. |
| Mar 2, 5:55 AM CST | HAIL 0.7 | St. Charles, MO | MOSTLY HALF INCH COVERING THE GROUND NEAR ZUMBHEL AND HWY 94 |
| Mar 2, 5:55 AM CST | HAIL 1 | St. Charles, MO | I70 AND 5TH ST |
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 |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 11.2 hours before the alert went out and 249 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.
954 WUUS53 KLSX 021113 SVRLSX MOC071-183-189-219-021200- /O.NEW.KLSX.SV.W.0028.120302T1113Z-120302T1200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 513 AM CST FRI MAR 2 2012 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI... ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI... CENTRAL ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI... SOUTHEASTERN WARREN COUNTY IN EAST CENTRAL MISSOURI... * UNTIL 600 AM CST * AT 511 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE DESTRUCTIVE HAIL UP TO TENNIS BALL SIZE. THIS STORM WAS LOCATED NEAR NEW HAVEN...AND MOVING NORTHEAST AT 60 MPH. * LOCATIONS IMPACTED INCLUDE... WASHINGTON...WILDWOOD...LAKE ST. LOUIS...DARDENNE PRAIRIE... O'FALLON...ELLISVILLE...WELDON SPRING...CLARKSON VALLEY... COTTLEVILLE...BALLWIN...CHESTERFIELD...MANCHESTER...ST. PETERS... TOWN AND COUNTRY...MARYLAND HEIGHTS...ST. CHARLES...CREVE COEUR... FRONTENAC...LADUE AND OLIVETTE. 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 3889 9049 3862 9034 3840 9127 3864 9136 TIME...MOT...LOC 1113Z 245DEG 52KT 3858 9117 WIND...HAIL <50MPH 2.50IN $$ KANOFSKY
2 follow-up statements
515 WWUS53 KLSX 021138 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 538 AM CST FRI MAR 2 2012 MOC071-183-189-219-021200- /O.CON.KLSX.SV.W.0028.000000T0000Z-120302T1200Z/ FRANKLIN MO-ST. CHARLES MO-ST. LOUIS MO-WARREN MO- 538 AM CST FRI MAR 2 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN WARREN...CENTRAL ST. LOUIS...ST. CHARLES AND NORTHERN FRANKLIN COUNTIES UNTIL 600 AM CST... AT 537 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL. THIS STORM WAS LOCATED NEAR DARDENNE PRAIRIE...MOVING NORTHEAST AT 60 MPH. IN ADDITION...PING PONG BALL SIZE HAIL WAS REPORTED WITH THIS STORM NEAR NEW MELLE. LOCATIONS IMPACTED INCLUDE... DARDENNE PRAIRIE...O'FALLON...ELLISVILLE...WELDON SPRING...CLARKSON VALLEY...COTTLEVILLE...BALLWIN...CHESTERFIELD...MANCHESTER...ST. PETERS...TOWN AND COUNTRY...DES PERES...MARYLAND HEIGHTS...ST. CHARLES...CREVE COEUR...FRONTENAC...LADUE...BRENTWOOD...OLIVETTE AND BRIDGETON. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. && LAT...LON 3889 9049 3862 9034 3840 9127 3864 9136 TIME...MOT...LOC 1138Z 245DEG 52KT 3873 9075 WIND...HAIL <50MPH 1.75IN $$ KANOFSKY
273 WWUS53 KLSX 021144 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 544 AM CST FRI MAR 2 2012 MOC219-021154- /O.CAN.KLSX.SV.W.0028.000000T0000Z-120302T1200Z/ WARREN MO- 544 AM CST FRI MAR 2 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WARREN COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 3853 9082 3877 9092 3889 9049 3865 9036 TIME...MOT...LOC 1144Z 245DEG 52KT 3876 9065 $$ MOC071-183-189-021200- /O.CON.KLSX.SV.W.0028.000000T0000Z-120302T1200Z/ FRANKLIN MO-ST. CHARLES MO-ST. LOUIS MO- 544 AM CST FRI MAR 2 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL ST. LOUIS...CENTRAL ST. CHARLES AND NORTHEASTERN FRANKLIN COUNTIES UNTIL 600 AM CST... AT 541 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. THIS STORM WAS LOCATED NEAR DARDENNE PRAIRIE...MOVING NORTHEAST AT 60 MPH. LOCATIONS IMPACTED INCLUDE... ST. PETERS...TOWN AND COUNTRY...MARYLAND HEIGHTS...ST. CHARLES... CREVE COEUR...OLIVETTE...BRIDGETON...HARVESTER AND KAMPVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. && LAT...LON 3853 9082 3877 9092 3889 9049 3865 9036 TIME...MOT...LOC 1144Z 245DEG 52KT 3876 9065 WIND...HAIL <50MPH 1.50IN $$ KANOFSKY
The 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, 5:56 AM CST | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Saint Louis, City of Saint Louis | 49 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 |
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.