Alert archive / Missouri / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 143, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 29, 2012, 10:45 PM CDT for Audrain County, Monroe County, Ralls County, Missouri. It was in force for 45 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
- Apr 29, 2012, 10:45 PM CDT (03:45 UTC)
- Expired
- Apr 29, 2012, 11:30 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Audrain County, MO, Monroe County, MO, Ralls County, MO
The radar
The St Louis radar (KLSX), 108 km from the middle of the area, began a volume at 03:49 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 nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 3.8 hours before the alert went out and 275 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
- 437 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 353 m²/s²
- 0-3 km storm-relative helicity
- 432 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
457 WUUS53 KLSX 300345 SVRLSX MOC007-137-173-300430- /O.NEW.KLSX.SV.W.0143.120430T0345Z-120430T0430Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1045 PM CDT SUN APR 29 2012 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN AUDRAIN COUNTY IN CENTRAL MISSOURI... SOUTHEASTERN MONROE COUNTY IN NORTHEAST MISSOURI... SOUTHWESTERN RALLS COUNTY IN NORTHEAST MISSOURI... * UNTIL 1130 PM CDT * AT 1044 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES NORTH OF MEXICO...AND MOVING EAST AT 40 MPH. HAZARD...QUARTER SIZE HAIL. SOURCE...RADAR INDICATED. IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. * LOCATIONS IMPACTED INCLUDE... VANDALIA...LADDONIA...FARBER AND RUSH HILL. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM WINDOWS. && LAT...LON 3947 9146 3916 9142 3914 9195 3932 9200 TIME...MOT...LOC 0345Z 258DEG 33KT 3925 9186 HAIL...1.00IN WIND...<50 MPH $$ BRITT
3 follow-up statements
171 WWUS53 KLSX 300354 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1054 PM CDT SUN APR 29 2012 MOC007-137-173-300430- /O.CON.KLSX.SV.W.0143.000000T0000Z-120430T0430Z/ MONROE MO-RALLS MO-AUDRAIN MO- 1054 PM CDT SUN APR 29 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN AUDRAIN...SOUTHWESTERN RALLS AND SOUTHEASTERN MONROE COUNTIES UNTIL 1130 PM CDT... AT 1049 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES NORTHEAST OF MEXICO...AND MOVING EAST AT 40 MPH. HAZARD...QUARTER SIZE HAIL. SOURCE...RADAR INDICATED. IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. LOCATIONS IMPACTED INCLUDE... VANDALIA...LADDONIA...FARBER AND RUSH HILL. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM WINDOWS. && LAT...LON 3947 9146 3916 9142 3914 9195 3932 9200 TIME...MOT...LOC 0354Z 258DEG 33KT 3927 9176 HAIL...1.00IN WIND...<50 MPH $$ BRITT
311 WWUS53 KLSX 300408 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1108 PM CDT SUN APR 29 2012 MOC007-137-173-300430- /O.CON.KLSX.SV.W.0143.000000T0000Z-120430T0430Z/ MONROE MO-RALLS MO-AUDRAIN MO- 1108 PM CDT SUN APR 29 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN AUDRAIN...SOUTHWESTERN RALLS AND SOUTHEASTERN MONROE COUNTIES UNTIL 1130 PM CDT... AT 1107 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTHEAST OF MEXICO...AND MOVING EAST AT 45 MPH. HAZARD...QUARTER SIZE HAIL. SOURCE...RADAR INDICATED. IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. LOCATIONS IMPACTED INCLUDE... VANDALIA...LADDONIA...FARBER AND RUSH HILL. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM WINDOWS. && LAT...LON 3947 9146 3916 9142 3914 9195 3932 9200 TIME...MOT...LOC 0409Z 257DEG 38KT 3924 9181 HAIL...1.00IN WIND...<50 MPH $$ BRITT
534 WWUS53 KLSX 300424 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1124 PM CDT SUN APR 29 2012 MOC007-137-173-300433- /O.EXP.KLSX.SV.W.0143.000000T0000Z-120430T0430Z/ MONROE MO-RALLS MO-AUDRAIN MO- 1124 PM CDT SUN APR 29 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EASTERN AUDRAIN...SOUTHWESTERN RALLS AND SOUTHEASTERN MONROE COUNTIES WILL EXPIRE AT 1130 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER HEAVY RAIN IS STILL LIKELY WITH THIS THUNDERSTORM. LAT...LON 3947 9146 3916 9142 3914 9195 3932 9200 TIME...MOT...LOC 0423Z 257DEG 38KT 3927 9162 $$ BRITT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 8:11 PM CDT | River Flood Warning | LSX | Cole | 45 hr |
| Apr 29, 10:10 PM CDT | River Flood Warning | LSX | Lincoln | 11 hr |
| Apr 29, 10:13 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis | 47 min |
| Apr 29, 10:43 PM CDT | Flash Flood Warning | LSX | Audrain, Boone | 8 hr |
| Apr 30, 12:02 AM CDT | Flash Flood Warning | LSX | Boone | 7 hr |
| Apr 30, 2:40 AM CDT | Flash Flood Warning | LSX | Callaway | 6 hr |
| Apr 30, 6:29 AM CDT | Flash Flood Warning | LSX | Audrain, Boone | 5 hr |
| Apr 30, 8:31 AM CDT | Areal Flood Warning | LSX | Callaway | 6 hr |
| Apr 30, 10:48 AM CDT | Areal Flood Warning | LSX | Boone | 6 hr |
| Apr 30, 4:51 PM CDT | Areal Flood Warning | LSX | Boone | 6 hr |
| Apr 30, 5:27 PM CDT | River Flood Warning | LSX | Lincoln | 17 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.