Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 204, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Sep 30, 2012, 11:10 PM CDT for Washington County, Alabama. It was in force for 50 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
- Sep 30, 2012, 11:10 PM CDT (04:10 UTC)
- Expired
- Oct 1, 2012, 12:00 AM CDT
- In force
- 50 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Washington County, AL
The radar
The Mobile radar (KMOB), 86 km from the middle of the area, began a volume at 04:10 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 30, 5:50 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 4.2 hours before the alert went out and 199 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
- 1860 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 486 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 235 m²/s²
- 0-3 km storm-relative helicity
- 248 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 12.4
The text
As transmitted, in the capitals the NWS used until 2016.
434
WUUS54 KMOB 010410
SVRMOB
ALC129-010500-
/O.NEW.KMOB.SV.W.0204.121001T0410Z-121001T0500Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1110 PM CDT SUN SEP 30 2012
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WASHINGTON COUNTY IN SOUTHWEST ALABAMA...
* UNTIL MIDNIGHT CDT
* AT 1105 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING
DAMAGING WINDS OVER 60 MPH WAS LOCATED 11 MILES SOUTH OF CHATOM...
OR 4 MILES SOUTHEAST OF TIBBIE...AND MOVING NORTHEAST AT 35 MPH.
* LOCATIONS IMPACTED INCLUDE...
WAGARVILLE... VINEGAR BEND... TIBBIE...
SAINT STEPHENS... MILLRY... MCINTOSH...
LEROY... DEER PARK... CHATOM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEEK SAFE SHELTER INDOORS IF YOU ARE IN THE PATH OF THIS STORM.
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES.
&&
LAT...LON 3160 8808 3148 8791 3114 8809 3117 8840
3168 8837
TIME...MOT...LOC 0409Z 211DEG 30KT 3134 8820
$$1 follow-up statement
184
WWUS54 KMOB 010432
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1132 PM CDT SUN SEP 30 2012
ALC129-010500-
/O.CON.KMOB.SV.W.0204.000000T0000Z-121001T0500Z/
WASHINGTON AL-
1132 PM CDT SUN SEP 30 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR WASHINGTON COUNTY...
AT 1128 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING
WINDS OVER 60 MPH WAS LOCATED 10 MILES SOUTHEAST OF CHATOM...OR 7
MILES SOUTHWEST OF WAGARVILLE...MOVING NORTHEAST AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
WAGARVILLE... TIBBIE... SAINT STEPHENS...
MILLRY... MCINTOSH... LEROY...
CHATOM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. PREPARE FOR DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY.
&&
LAT...LON 3160 8808 3148 8791 3122 8805 3135 8839
3168 8837
TIME...MOT...LOC 0432Z 224DEG 22KT 3140 8810
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 30, 9:49 PM CDT | Special Marine Warning | MOB | 86 min | |
| Oct 1, 12:44 AM CDT | Special Marine Warning | MOB | 91 min | |
| Oct 1, 9:20 AM CDT | Rip Current Statement | MOB | 15 hr |
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.