Alert archive / Alabama / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 178, NWS Mobile, AL

December 28, 20154 counties in Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Dec 28, 2015, 9:04 AM CST for 4 counties in 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
Dec 28, 2015, 9:04 AM CST (15:04 UTC)
Expired
Dec 28, 2015, 9:45 AM CST
In force
41 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Butler County, AL, Conecuh County, AL, Monroe County, AL, Wilcox County, AL

The radar

The Maxwell AFB radar (KMXX), 143 km from the middle of the area, began a volume at 15:04 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Dec 28, 6:41 AM CSTTornado WatchSPC5 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 3.1 hours before the alert went out and 161 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.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2015-12-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 144 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2015-12-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 330 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
144 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
584 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
330 m²/s²
0-3 km storm-relative helicity
377 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

890 
WUUS54 KMOB 281504
SVRMOB
ALC013-035-099-131-281545-
/O.NEW.KMOB.SV.W.0178.151228T1504Z-151228T1545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
904 AM CST MON DEC 28 2015

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHEASTERN MONROE COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHEASTERN WILCOX COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHWESTERN BUTLER COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 945 AM CST

* AT 904 AM CST...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES EAST OF
  PETERMAN...OR 12 MILES NORTHEAST OF MONROEVILLE...MOVING NORTH AT
  45 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  PINE APPLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST FOR SOUTH CENTRAL
ALABAMA.

LAT...LON 3185 8674 3148 8714 3154 8725 3198 8704
TIME...MOT...LOC 1504Z 201DEG 41KT 3161 8714 

HAIL...<.75IN
WIND...60MPH
 
$$
1 follow-up statement
123 
WWUS54 KMOB 281516
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
916 AM CST MON DEC 28 2015

ALC013-035-099-131-281545-
/O.CON.KMOB.SV.W.0178.000000T0000Z-151228T1545Z/
CONECUH AL-MONROE AL-WILCOX AL-BUTLER AL-
916 AM CST MON DEC 28 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 AM CST
FOR NORTH CENTRAL CONECUH...NORTHEASTERN MONROE...SOUTHEASTERN WILCOX
AND NORTHWESTERN BUTLER COUNTIES...

AT 916 AM CST...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES EAST OF
BEATRICE...OR 20 MILES NORTHEAST OF MONROEVILLE...MOVING NORTHEAST AT
50 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
PINE APPLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST FOR SOUTH CENTRAL
ALABAMA.

LAT...LON 3157 8704 3167 8719 3198 8704 3185 8674
TIME...MOT...LOC 1516Z 203DEG 41KT 3174 8707 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 28, 2:38 AM CSTWind AdvisoryMOBBaldwin, Mobile9 hr
Dec 28, 3:16 AM CSTHigh Surf AdvisoryMOBBaldwin, Mobile15 hr
Dec 28, 6:19 AM CSTSevere Thunderstorm WarningMOBMobile41 min
Dec 28, 6:44 AM CSTTornado WarningMOBBaldwin31 min
Dec 28, 6:57 AM CSTSpecial Weather StatementMOBClarke, Washington63 min
Dec 28, 6:59 AM CSTTornado WarningMOBWashington46 min
Dec 28, 7:03 AM CSTSevere Thunderstorm WarningMOBChoctaw, Washington57 min
Dec 28, 7:10 AM CSTSpecial Marine WarningMOB95 min
Dec 28, 7:14 AM CSTTornado WarningMOBBaldwin, Escambia, Monroe46 min
Dec 28, 7:16 AM CSTTornado WarningMOBBaldwin59 min
Dec 28, 7:18 AM CSTTornado WarningMOBChoctaw42 min
Dec 28, 7:28 AM CSTTornado WarningMOBChoctaw, Washington47 min
Dec 28, 7:48 AM CSTTornado WarningMOBMonroe42 min
Dec 28, 8:00 AM CSTTornado WarningMOBEscambia, Monroe30 min
Dec 28, 8:06 AM CSTSpecial Marine WarningMOB84 min
Dec 28, 8:06 AM CSTSevere Thunderstorm WarningMOBChoctaw39 min
Dec 28, 8:09 AM CSTTornado WarningMOBMonroe, Wilcox33 min
Dec 28, 8:13 AM CSTSevere Thunderstorm WarningMOBBaldwin, Choctaw, Clarke, Mobile, Washington62 min
Dec 28, 8:16 AM CSTTornado WarningMOBButler, Conecuh, Escambia, Monroe2 min
Dec 28, 8:19 AM CSTTornado WarningMOBEscambia41 min
Dec 28, 8:36 AM CSTSevere Thunderstorm WarningMOBMonroe, Wilcox39 min
Dec 28, 8:59 AM CSTSevere Thunderstorm WarningMOBConecuh, Escambia46 min
Dec 28, 9:06 AM CSTTornado WarningMOBBaldwin39 min
Dec 28, 9:27 AM CSTSpecial Marine WarningMOB2 hr
Dec 28, 9:32 AM CSTSevere Thunderstorm WarningMOBButler, Wilcox13 min
Dec 28, 9:52 AM CSTSpecial Weather StatementMOBBaldwin, Clarke, Monroe53 min
Dec 28, 10:01 AM CSTSevere Thunderstorm WarningMOBConecuh, Escambia44 min
Dec 28, 10:48 AM CSTSpecial Weather StatementMOBConecuh, Escambia, Monroe57 min
Dec 28, 11:16 AM CSTSpecial Marine WarningMOB119 min
Dec 28, 11:37 AM CSTSevere Thunderstorm WarningMOBButler, Crenshaw26 min
Dec 28, 11:50 AM CSTTornado WarningMOBButler12 min
Dec 28, 12:09 PM CSTSpecial Weather StatementMOBButler, Covington, Crenshaw96 min
Dec 28, 12:14 PM CSTAreal Flood AdvisoryMOBButler3 hr
Dec 28, 12:46 PM CSTSpecial Marine WarningMOB119 min
Dec 28, 12:51 PM CSTSevere Thunderstorm WarningMOBButler, Crenshaw39 min
Dec 28, 1:12 PM CSTSevere Thunderstorm WarningMOBCovington48 min
Dec 28, 1:52 PM CSTAreal Flood AdvisoryMOBButler, Crenshaw3 hr
Dec 28, 1:55 PM CSTSevere Thunderstorm WarningMOBCovington35 min
Dec 28, 1:59 PM CSTAreal Flood AdvisoryMOBCovington3 hr
Dec 28, 2:44 PM CSTSpecial Marine WarningMOB31 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2015Every severe thunderstorm warning in 2015

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.