Alert archive / Alabama / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 60, NWS Huntsville, AL

May 17, 2015Lawrence County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at May 17, 2015, 3:03 PM CDT for Lawrence County, Alabama. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 17, 2015, 3:03 PM CDT (20:03 UTC)
Expired
May 17, 2015, 3:30 PM CDT
In force
27 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Lawrence County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.1 hours before the alert went out and 190 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, Nashville Metro, TN at 12:00Z on 2015-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 37 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, Nashville Metro, TN at 12:00Z on 2015-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -36 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
37 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
898 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-36 m²/s²
0-3 km storm-relative helicity
-2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 8:01 PM CDTSpecial Weather StatementHUNMadison44 min
May 17, 1:04 PM CDTSpecial Weather StatementHUNFranklin26 min
May 17, 1:17 PM CDTSpecial Weather StatementHUNLimestone43 min
May 17, 2:12 PM CDTSpecial Weather StatementHUNLimestone33 min
May 17, 2:29 PM CDTSpecial Weather StatementHUNLimestone46 min
May 17, 3:00 PM CDTSpecial Weather StatementHUNLawrence30 min
May 17, 6:38 PM CDTSpecial Weather StatementHUNColbert, Lauderdale37 min
May 16, 9:42 PM CDTSpecial Weather StatementHUNFranklin33 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2015Every severe thunderstorm warning 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.