Alert archive / Alabama / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 100, NWS Huntsville, AL

December 28, 2016Lauderdale County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Dec 28, 2016, 5:39 PM CST for Lauderdale County, Alabama. It was in force for 36 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
Dec 28, 2016, 5:39 PM CST (23:39 UTC)
Expired
Dec 28, 2016, 6:15 PM CST
In force
36 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Lauderdale County, AL

The radar

The Columbus AFB radar (KGWX), 128 km from the middle of the area, began a volume at 23:40 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

Nashville Metro, TN (KBNA), launched 12:00Z, 11.7 hours before the alert went out and 167 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 2016-12-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2016-12-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2177 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Huntsville, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Dec 28, 4:02 PM CST, 1 hour 37 minutes earlier.

Area forecast discussion, Dec 28, 4:02 PM CST, 1 hour 37 minutes before
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Hazardous weather outlook, Dec 28, 11:23 AM CST, 6 hours 16 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1123 AM CST WED DEC 28 2016

ALZ001>010-016-TNZ076-096-097-290615-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DE KALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
1123 AM CST WED DEC 28 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF
SOUTHERN MIDDLE TENNESSEE.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED TONIGHT AS A COLD
FRONT APPROACHES THE TENNESSEE VALLEY FROM THE WEST. SOME OF THESE
STORMS COULD BE SEVERE...ESPECIALLY OVER NORTHWEST AND NORTH
CENTRAL ALABAMA. DAMAGING WIND GUSTS OVER 60 MPH...BRIEF TORNADOES...
HEAVY RAINFALL...AND SMALL HAIL ARE THE PRIMARY IMPACTS FROM THE
STRONGER STORMS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

A THREAT FOR THUNDERSTORMS FROM THIS PARTICULAR SYSTEM SHOULD END
DURING THE EARLY MORNING HOURS ON THURSDAY.

AN ADDITIONAL CHANCE FOR THUNDERSTORMS IS FORECAST ON SUNDAY THROUGH
MONDAY NIGHT AS ANOTHER FRONTAL SYSTEM APPROACHES THE REGION. THE
PRIMARY IMPACT WILL BE GUSTY WINDS TO 50 MPH AND HEAVY RAINFALL.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS
POSSIBLE THIS EVENING AND INTO THE LATE NIGHT.

In the hours before

Special weather statement, Dec 28, 5:11 PM CST, 28 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Dec 28, 3:05 PM CSTWind AdvisoryHUNDeKalb, Jackson, Madison, Marshall30 hr
Dec 28, 5:11 PM CSTSpecial Weather StatementHUNLauderdale49 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2016Every severe thunderstorm warning 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.