Alert archive / Alabama / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 104, NWS Huntsville, AL

October 3, 2014Jackson County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Oct 3, 2014, 4:11 AM CDT for Jackson County, Alabama. It was in force for 15 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
Oct 3, 2014, 4:11 AM CDT (09:11 UTC)
Expired
Oct 3, 2014, 4:26 AM CDT
In force
15 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon

County Jackson County, AL

The radar

The Northeast Alabama radar (KHTX), 19 km from the middle of the area, began a volume at 09:13 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 00:00Z, 9.2 hours before the alert went out and 160 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 00:00Z on 2014-10-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 00:00Z on 2014-10-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 square meters per square second.193958Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1814 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
194 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 Oct 3, 2:50 AM CDT, 1 hour 21 minutes earlier.

Area forecast discussion, Oct 3, 2:50 AM CDT, 1 hour 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
250 AM CDT FRI OCT 3 2014

.DISCUSSION...
TOOK A BLEND OF ECMWF AND GFS FOR THIS FCST PACKAGE. TEMPS ATTM WERE
STILL VERY MILD FOR THIS TIME OF THE YEAR...LOW/MID 70S.

SFC LOW NOW OVER IL HAD A CDFNT EXTENDING THRU SERN MO AND INTO NE
TX...WHILE THE UPPER TROF STRETCHED ACROSS WRN MO/AR. THE SQUALL
LINE THAT BROUGHT SVR WX OVER PORTIONS OF THE SRN PLAINS/MS VALLEY
HAS WEAKEN CONSIDERABLY. HOWEVER STILL CANT RULE OUT A FEW STRONG TO
SEVERE STORMS WITH DAMAGING WIND GUSTS EARLY THIS MRNG. THE CDFNT
SHOULD BE MOVING OUT OF THE TN VALLEY BY THIS AFTN...TAKING THE CHC
OF PCPN WITH IT. BUT DEPENDING ON THE TIMING OF THE CDFNT AND IF WE
GET ENOUGH SUNSHINE THIS AFTN...COULD SEE A FEW STORMS ESPECIALLY
OVER NE AL. HOWEVER THE CHC OF SVR WX LOOKS LOW THIS AFTN.

FOR TONIGHT A MUCH COLDER AND DRIER AIR MASS WILL PUSH ACROSS THE
CWA WITH MRNG LOWS IN THE LOWER 40S UNDER MOSTLY CLR SKIES. SATURDAY
WILL DEFINITELY FEEL FALL LIKE WITH HIGHS ONLY IN THE LOW/MID 60S AND
DRY CONDITIONS. SUNDAY WILL HAVE A FEW MORE CLOUDS AS A WEAK UPPER
DISTURBANCE APPROACHES THE CWA. AFTN HIGHS WILL WARM INTO THE LOWER
70S WITH NO PCPN EXPECTED.

MONDAY AND TUESDAY...LOOKS LIKE SEVERAL WEAK UPPER DISTURBANCES WILL
ROTATE ARND AN UPPER LOW OVER THE NRN GREAT LAKES...BRINGING A CHC OF
PCPN. FOR NOW WILL KEEP PCPN AS SHRA DUE TO WEAK INSTABILITY.

WEDNESDAY AND THURSDAY...WEAK RIDGING SHOULD KEEP THIS TIME FRAME DRY
WITH A WARMING TREND (HIGHS IN THE MID 80S).

07

&&

.AVIATION...
/ISSUED 1209 AM CDT FRI OCT 3 2014/
FOR 06Z TAFS...
SQUALL LINE CONTINUES TO APPROACH THE TERMINALS FROM THE WEST, AND
WILL OVERSPREAD KMSL WITHIN THE NEXT COUPLE OF HOURS...SPREADING
EASTWARD PAST KHSV THRU SUNRISE. GUSTY WINDS/MVFR CONDS ARE EXPECTED
AS THE LINE PUSHES ACROSS THE TERMINALS, WITH BRIEF IFR CONDS
POSSIBLE IN THE STRONGER SHOWER/STORM ACTIVITY. GUSTS WITHIN TSTORM
ACTIVITY MAY APPROACH 40KTS, AND HAS BEEN ADDED AS A TEMPO GROUP FROM
~8-12Z. SHOWERS ARE POSSIBLE THROUGH MIDDAY BEHIND THE MAIN LINE OF
STORMS, WITH SKIES CLEARING BY SUNSET. WINDS WILL LESSEN THROUGH
MIDNIGHT, GRADUALLY TURNING TO THE W/NW.

12

&&

.PRELIMINARY POINT TEMPS/POPS...
HUNTSVILLE    80  43  64  39 /  60   0   0   0
SHOALS        81  42  65  39 /  50   0   0   0
VINEMONT      79  43  64  39 /  60   0   0   0
FAYETTEVILLE  78  42  63  38 /  60   0   0   0
ALBERTVILLE   77  43  64  41 /  70   0   0   0
FORT PAYNE    80  43  63  37 /  70   0   0   0

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
TN...NONE.
&&

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE
AT WEATHER.GOV/HUNTSVILLE.
Hazardous weather outlook, Oct 3, 3:12 AM CDT, 59 minutes before
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In the hours before

Special weather statement, Oct 3, 3:10 AM CDT, 1 hour 1 minute before
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Special weather statement, Oct 3, 3:26 AM CDT, 45 minutes before
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Special weather statement, Oct 3, 3:30 AM CDT, 41 minutes before
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Special weather statement, Oct 3, 3:46 AM CDT, 25 minutes before
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Local storm report, Oct 3, 3:58 AM CDT, 13 minutes before
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Local storm report, Oct 3, 4:09 AM CDT, 2 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 3, 12:34 AM CDTSpecial Weather StatementHUNColbert41 min
Oct 3, 12:59 AM CDTSpecial Weather StatementHUNColbert46 min
Oct 3, 1:04 AM CDTSpecial Weather StatementHUNFranklin41 min
Oct 3, 1:38 AM CDTSpecial Weather StatementHUNColbert, Lauderdale52 min
Oct 3, 1:46 AM CDTSpecial Weather StatementHUNLawrence44 min
Oct 3, 2:19 AM CDTSpecial Weather StatementHUNLimestone41 min
Oct 3, 2:22 AM CDTSevere Thunderstorm WarningHUNLauderdale, Lawrence, Limestone23 min
Oct 3, 2:48 AM CDTSpecial Weather StatementHUNMadison42 min
Oct 3, 2:58 AM CDTTornado WarningHUNLimestone, Madison20 min
Oct 3, 3:10 AM CDTSpecial Weather StatementHUNMorgan50 min
Oct 3, 3:30 AM CDTSpecial Weather StatementHUNCullman45 min
Oct 3, 3:46 AM CDTSpecial Weather StatementHUNMarshall44 min
Oct 3, 4:31 AM CDTSpecial Weather StatementHUNDeKalb44 min
Oct 3, 3:26 AM CDTSpecial Weather StatementHUNLincoln49 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2014Every severe thunderstorm warning 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.