Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 54, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at May 12, 2012, 2:28 PM CDT for Washington County, Alabama. It was in force for 41 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
- May 12, 2012, 2:28 PM CDT (19:28 UTC)
- Expired
- May 12, 2012, 3:09 PM CDT
- In force
- 41 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Washington County, AL
The radar
The Mobile radar (KMOB), 72 km from the middle of the area, began a volume at 19:31 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
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.5 hours before the alert went out and 182 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
- 1685 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 500 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.7
The text
As transmitted, in the capitals the NWS used until 2016.
075 WUUS54 KMOB 121928 SVRMOB ALC129-122030- /O.NEW.KMOB.SV.W.0054.120512T1928Z-120512T2030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 228 PM CDT SAT MAY 12 2012 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA... * UNTIL 330 PM CDT * AT 222 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 11 MILES EAST OF LEAKESVILLE...OR 4 MILES SOUTHWEST OF DEER PARK...AND MOVING NORTHEAST AT 15 MPH. * LOCATIONS IMPACTED INCLUDE... SIMS CHAPEL... VINEGAR BEND... TIBBIE... MCINTOSH... MALCOLM... DEER PARK... PRECAUTIONARY/PREPAREDNESS ACTIONS... FREQUNET CLOUD TO GROUND LIGHTNING IS ALSO OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 3152 8824 3119 8797 3113 8843 3128 8844 TIME...MOT...LOC 1924Z 243DEG 14KT 3119 8837 $$
2 follow-up statements
198 WWUS54 KMOB 121942 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 242 PM CDT SAT MAY 12 2012 ALC129-122030- /O.CON.KMOB.SV.W.0054.000000T0000Z-120512T2030Z/ WASHINGTON AL- 242 PM CDT SAT MAY 12 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR SOUTHERN WASHINGTON COUNTY... AT 236 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 13 MILES NORTH OF CITRONELLE...OR 3 MILES NORTHEAST OF DEER PARK...MOVING NORTHEAST AT 20 MPH. LOCATIONS IMPACTED INCLUDE... SIMS CHAPEL... VINEGAR BEND... TIBBIE... MCINTOSH... MALCOLM... DEER PARK... PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. PREPARE FOR DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. TO REPORT SEVERE WEATHER...CALL (800) 284-9059. && LAT...LON 3114 8834 3130 8843 3152 8824 3119 8797 TIME...MOT...LOC 1941Z 241DEG 18KT 3126 8826 $$
114 WWUS54 KMOB 122009 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 309 PM CDT SAT MAY 12 2012 ALC129-122018- /O.CAN.KMOB.SV.W.0054.000000T0000Z-120512T2030Z/ WASHINGTON AL- 309 PM CDT SAT MAY 12 2012 ...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR SOUTHERN WASHINGTON COUNTY... AT 304 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTHERN WASHINGTON COUNTY HAD MOVED OUT OF THE WARNED AREA...THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED. TO REPORT SEVERE WEATHER...CALL (800) 284-9059. LAT...LON 3114 8834 3130 8843 3152 8824 3119 8797 TIME...MOT...LOC 2008Z 241DEG 18KT 3133 8812 $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 12:31 PM CDT | Severe Thunderstorm Warning | MOB | Mobile, Washington | 59 min |
| May 12, 12:55 PM CDT | Tornado Warning | MOB | Mobile, Washington | 50 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 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.