Alert archive / Alabama / Special Weather Statements in 2014

Special Weather Statement, NWS Huntsville, AL

October 11, 2014Franklin County, Alabama

NWS Huntsville, AL issued this special weather statement at Oct 11, 2014, 1:07 AM CDT for Franklin County, Alabama. It was in force for 38 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
Oct 11, 2014, 1:07 AM CDT (06:07 UTC)
Expired
Oct 11, 2014, 1:45 AM CDT
In force
38 min
Issued by
NWS Huntsville, AL

County Franklin County, AL

The radar

The Columbus AFB radar (KGWX), 64 km from the middle of the area, began a volume at 06:08 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

Little Rock, AR (KBYH), launched 00:00Z, 6.1 hours before the alert went out and 179 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, Little Rock, AR at 00:00Z on 2014-10-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 996 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2014-10-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
996 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1116 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.6

Open this sounding in Storm Lab

The text

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

042 
WWUS84 KHUN 110607
SPSHUN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
107 AM CDT SAT OCT 11 2014
 
ALZ003-110645-
FRANKLIN AL-
107 AM CDT SAT OCT 11 2014

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN FRANKLIN COUNTY UNTIL 145
AM CDT...

AT 106 AM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR 
RED BAY...MOVING EAST AT 35 MPH.

PEA SIZE HAIL AND WIND GUSTS OF 40 TO 50 MPH WILL BE POSSIBLE WITH 
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
RED BAY...VINA...HODGES...LITTLE BEAR CREEK RESERVOIR...ATWOOD...
DEMPSEY...HALLTOWN AND CEDAR CREEK RESERVOIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STRONG GUSTY WINDS WILL BE CAPABLE OF KNOCKING DOWN SMALL TREE
LIMBS...ALONG WITH OTHER SMALL UNSECURED ITEMS. SEEK SAFE SHELTER
UNTIL THIS STORM HAS PASSED.

&&

LAT...LON 3452 8815 3453 8787 3431 8787 3432 8812
      3433 8817
TIME...MOT...LOC 0606Z 270DEG 31KT 3443 8817 

$$

70/DD

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 11, 1:13 AM CDTSpecial Weather StatementHUNLimestone47 min
Oct 11, 1:49 AM CDTSpecial Weather StatementHUNLawrence41 min
Oct 11, 3:23 AM CDTSpecial Weather StatementHUNMadison52 min

Nearby

Special Weather Statements in Alabama, 2014Every special weather statement in 2014

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.