Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 58, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at May 21, 2012, 3:04 PM CDT for Mobile County, Alabama. It was in force for 19 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 21, 2012, 3:04 PM CDT (20:04 UTC)
- Expired
- May 21, 2012, 3:23 PM CDT
- In force
- 19 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Mobile County, AL
The radar
The Mobile radar (KMOB), 48 km from the middle of the area, began a volume at 20:04 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, 8.1 hours before the alert went out and 152 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
- 620 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 1402 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
729
WUUS54 KMOB 212004
SVRMOB
ALC097-212100-
/O.NEW.KMOB.SV.W.0058.120521T2004Z-120521T2100Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
304 PM CDT MON MAY 21 2012
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEAST MOBILE COUNTY IN SOUTHWEST ALABAMA...
* UNTIL 400 PM CDT
* AT 259 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 7 MILES EAST
OF BAYOU LA BATRE...OR 5 MILES SOUTHWEST OF BELLE FONTAINE...AND
MOVING SLOWLY SOUTH AT 10 MPH.
* LOCATIONS IMPACTED INCLUDE...
CODEN... BELLE FONTAINE...
LAT...LON 3024 8813 3025 8814 3030 8812 3032 8816
3032 8819 3033 8821 3036 8820 3038 8826
3054 8821 3052 8809 3048 8809 3033 8813
3023 8810
TIME...MOT...LOC 2003Z 000DEG 10KT 3041 8815
$$1 follow-up statement
610
WWUS54 KMOB 212023
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
323 PM CDT MON MAY 21 2012
ALC097-212033-
/O.CAN.KMOB.SV.W.0058.000000T0000Z-120521T2100Z/
MOBILE AL-
323 PM CDT MON MAY 21 2012
...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR SOUTHEAST
MOBILE COUNTY...
AT 322 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTH CENTRAL
MOBILE COUNTY HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.
LAT...LON 3024 8813 3025 8814 3030 8812 3032 8816
3032 8819 3033 8821 3036 8820 3038 8826
3054 8821 3052 8809 3048 8809 3033 8813
3023 8810
TIME...MOT...LOC 2023Z 000DEG 10KT 3035 8815
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 2:03 PM CDT | Special Marine Warning | MOB | 87 min | |
| May 21, 2:54 PM CDT | Severe Thunderstorm Warning | MOB | Monroe, Wilcox | 51 min |
| May 21, 3:08 PM CDT | Severe Thunderstorm Warning | MOB | Butler, Conecuh, Monroe | 52 min |
| May 21, 3:11 PM CDT | Special Marine Warning | MOB | 59 min | |
| May 21, 3:36 PM CDT | Severe Thunderstorm Warning | MOB | Butler, Clarke, Conecuh, Covington, Crenshaw, Monroe and 1 more | 54 min |
| May 21, 4:26 PM CDT | Severe Thunderstorm Warning | MOB | Conecuh, Escambia | 64 min |
| May 21, 4:32 PM CDT | Special Marine Warning | MOB | 88 min | |
| May 21, 4:54 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Escambia, Mobile | 51 min |
| May 21, 5:48 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Escambia, Mobile | 57 min |
| May 21, 6:56 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin | 64 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.