Alert archive / Alabama / Special Weather Statements in 2014

Special Weather Statement, NWS Huntsville, AL

June 30, 2014Marshall County, Alabama

NWS Huntsville, AL issued this special weather statement at Jun 30, 2014, 12:08 PM CDT for Marshall County, Alabama. It was in force for 37 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
Jun 30, 2014, 12:08 PM CDT (17:08 UTC)
Expired
Jun 30, 2014, 12:45 PM CDT
In force
37 min
Issued by
NWS Huntsville, AL

County Marshall County, AL

The radar

The Northeast Alabama radar (KHTX), 74 km from the middle of the area, began a volume at 17:10 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, 5.1 hours before the alert went out and 132 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 2014-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1656 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 2014-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
1656 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
848 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
38 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.

890 
WWUS84 KHUN 301708
SPSHUN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1208 PM CDT MON JUN 30 2014
 
ALZ008-301745-
MARSHALL AL-
1208 PM CDT MON JUN 30 2014

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL MARSHALL COUNTY UNTIL
1245 PM CDT...

AT 1207 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
GUNTERSVILLE...MOVING SOUTHEAST AT 15 MPH.

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

LOCATIONS IMPACTED INCLUDE...
ALBERTVILLE...BOAZ...GUNTERSVILLE...ARAB...UNION GROVE...LAKE
GUNTERSVILLE ST PARK...HIGH POINT...HUSTLEVILLE...MCVILLE AND HYATT.

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 3436 8650 3450 8636 3436 8611 3421 8611
      3418 8614 3418 8619 3414 8625
TIME...MOT...LOC 1707Z 310DEG 13KT 3438 8637 

$$

RSB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 10:16 PM CDTSpecial Weather StatementHUNDeKalb44 min
Jun 30, 4:23 AM CDTSpecial Weather StatementHUNJackson37 min
Jun 30, 4:59 AM CDTSpecial Weather StatementHUNJackson46 min
Jun 30, 12:29 PM CDTSpecial Weather StatementHUNJackson46 min
Jun 30, 1:19 PM CDTSpecial Weather StatementHUNJackson41 min
Jun 30, 2:02 PM CDTSpecial Weather StatementHUNJackson43 min
Jun 30, 2:12 PM CDTSpecial Weather StatementHUNDeKalb33 min
Jun 30, 2:46 PM CDTSpecial Weather StatementHUNDeKalb29 min
Jun 30, 12:56 PM CDTSpecial Weather StatementHUNLincoln, Moore49 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.