Alert archive / Alabama / Tornado Warnings in 2015

Tornado Warning 38, NWS Mobile, AL

December 28, 2015Butler County, Alabama

NWS Mobile, AL issued this tornado warning at Dec 28, 2015, 11:50 AM CST for Butler County, Alabama. It was in force for 12 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, 11:50 AM CST (17:50 UTC)
Expired
Dec 28, 2015, 12:02 PM CST
In force
12 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Butler County, AL

The radar

The Maxwell AFB radar (KMXX), 114 km from the middle of the area, began a volume at 17:50 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, 11:04 AM CSTTornado WatchSPC7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 5.8 hours before the alert went out and 148 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.

096 
WFUS54 KMOB 281750
TORMOB
ALC013-281815-
/O.NEW.KMOB.TO.W.0038.151228T1750Z-151228T1815Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1150 AM CST MON DEC 28 2015

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL BUTLER COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 1215 PM CST
    
* AT 1149 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER I65 AND AL 10...OR ABOUT 5 MILES WEST OF
  GREENVILLE... MOVING NORTH AT 45 MPH.

  HAZARD...TORNADO. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS STORM WILL IMPACT FORT DALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3176 8667 3180 8678 3196 8677 3196 8652
TIME...MOT...LOC 1749Z 200DEG 40KT 3185 8668 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
1 follow-up statement
727 
WWUS54 KMOB 281802
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1202 PM CST MON DEC 28 2015

ALC013-281811-
/O.CAN.KMOB.TO.W.0038.000000T0000Z-151228T1815Z/
BUTLER AL-
1202 PM CST MON DEC 28 2015

...THE TORNADO WARNING FOR NORTH CENTRAL BUTLER COUNTY IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM CST FOR SOUTH CENTRAL
ALABAMA.

LAT...LON 3176 8667 3180 8678 3196 8677 3196 8652
TIME...MOT...LOC 1759Z 200DEG 40KT 3199 8662 

$$

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, 9:04 AM CSTSevere Thunderstorm WarningMOBButler, Conecuh, Monroe, Wilcox41 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, 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

Tornado Warnings in Alabama, 2015Every tornado warning in 2015Tornadoes 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.