Alert archive / Alabama / Special Weather Statements in 2015

Special Weather Statement, NWS Mobile, AL

August 9, 2015Butler County, Alabama

NWS Mobile, AL issued this special weather statement at Aug 9, 2015, 3:12 PM CDT for Butler County, Alabama. It was in force for 63 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
Aug 9, 2015, 3:12 PM CDT (20:12 UTC)
Expired
Aug 9, 2015, 4:15 PM CDT
In force
63 min
Issued by
NWS Mobile, AL

County Butler County, AL

The radar

The Maxwell AFB radar (KMXX), 131 km from the middle of the area, began a volume at 20:15 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

Birmingham, AL (KBMX), launched 12:00Z, 8.2 hours before the alert went out and 160 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 2015-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 720 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 2015-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 square meters per square second.1939Sfc1 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
720 J/kg
Mixed-layer CIN
-120 J/kg
Mixed-layer LCL
1164 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

893 
WWUS84 KMOB 092012
SPSMOB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
312 PM CDT SUN AUG 9 2015
 
ALZ055>057-092115-
BUTLER AL-MONROE AL-CONECUH AL-
312 PM CDT SUN AUG 9 2015

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHWESTERN BUTLER...NORTHEASTERN MONROE AND NORTHEASTERN CONECUH IN
SOUTHCENTRAL ALABAMA UNTIL 415 PM CDT...

AT 311 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR I65 AND AL
10...OR 9 MILES SOUTHWEST OF GREENVILLE...MOVING SOUTHWEST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
GEORGIANA...           I65 AND CR 7...        I65 AND AL 106...

THE PRIMARY THREATS FROM THIS STORM ARE WIND GUSTS UP TO 45 MPH. 
WINDS THIS STRONG COULD BLOW OFF TREE LIMBS AND ALSO BLOW AROUND 
SMALL UNSECURED OBJECTS. SEEK SHELTER UNTIL THIS STORM HAS PASSED.

SMALL HAIL IS ALSO POSSIBLE WITH THIS STORM.

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. STAY AWAY FROM WINDOWS AND DOORS. AVOID USING WIRED
TELEPHONES DIRECTLY CONNECTED TO OUTSIDE PHONE LINES.

LAT...LON 3186 8674 3173 8663 3148 8687 3177 8711
TIME...MOT...LOC 2011Z 052DEG 16KT 3177 8676 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 7:11 PM CDTSpecial Weather StatementMOBWilcox64 min
Aug 8, 8:02 PM CDTSpecial Marine WarningMOB88 min
Aug 9, 5:32 AM CDTExcessive Heat WarningMOBMobile13 hr
Aug 9, 5:32 AM CDTHeat AdvisoryMOBMobile37 hr
Aug 9, 3:50 PM CDTSpecial Weather StatementMOBEscambia25 min
Aug 9, 5:46 PM CDTSpecial Weather StatementMOBBaldwin59 min
Aug 9, 6:38 PM CDTSpecial Weather StatementMOBMobile52 min
Aug 9, 2:54 PM CDTSpecial Weather StatementMOBSanta Rosa51 min
Aug 8, 7:14 PM CDTSpecial Weather StatementMOBGeorge, Greene, Perry, Stone61 min

Nearby

Special Weather Statements in Alabama, 2015Every special weather statement 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.