Alert archive / Alabama / Special Weather Statements in 2016

Special Weather Statement, NWS Birmingham, AL

August 4, 2016Chilton County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 4, 2016, 2:13 PM CDT for Chilton County, Alabama. It was in force for 47 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 4, 2016, 2:13 PM CDT (19:13 UTC)
Expired
Aug 4, 2016, 3:00 PM CDT
In force
47 min
Issued by
NWS Birmingham, AL

County Chilton County, AL

The radar

The Birmingham radar (KBMX), 32 km from the middle of the area, began a volume at 19:16 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, 7.2 hours before the alert went out and 33 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 2016-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1319 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 2016-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
1319 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
1027 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

709 
WWUS84 KBMX 041913
SPSBMX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
213 PM CDT THU AUG 4 2016
 
ALZ025-035-036-042000-
CHILTON AL-COOSA AL-SHELBY AL-
213 PM CDT THU AUG 4 2016

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN CHILTON...SOUTHEASTERN
SHELBY AND WESTERN COOSA COUNTIES UNTIL 300 PM CDT...

AT 212 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
OVER LAY LAKE...OR 7 MILES SOUTHWEST OF TALLADEGA SPRINGS...MOVING
SOUTHEAST AT 15 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
CLANTON...LYLE...GAP OF THE MOUNTAIN...HIGGINS FERRY PARK...
LAY LAKE...MARBLE VALLEY...MITCHELL LAKE...LAY LAKE DAM...MORIAH...
DOLLAR...SHELBY...PAINT CREEK...SPRING CREEK...I 65 REST AREA...
WAXAHATCHEE CREEK...KELLEY BRANCH...COOPER...
MITCHELL DAM AND HIGHWAY 145 AND CR 46.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3275 8655 3306 8676 3314 8648 3312 8646
      3312 8648 3310 8649 3310 8645 3286 8625
TIME...MOT...LOC 1912Z 333DEG 12KT 3304 8654 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 2:50 AM CDTHeat AdvisoryBMXAutauga, Barbour, Bibb, Bullock, Chilton, Coosa and 21 more18 hr
Aug 4, 1:34 PM CDTSpecial Weather StatementBMXCoosa41 min
Aug 4, 6:06 PM CDTSpecial Weather StatementBMXCleburne24 min
Aug 4, 6:07 PM CDTSpecial Weather StatementBMXBarbour, Pike38 min

Nearby

Special Weather Statements in Alabama, 2016Every special weather statement in 2016

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.