Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 122, NWS Huntsville, AL

June 4, 20125 counties in Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Jun 4, 2012, 12:12 AM CDT for 5 counties in 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
Jun 4, 2012, 12:12 AM CDT (05:12 UTC)
Expired
Jun 4, 2012, 12:39 AM CDT
In force
27 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon

Counties Colbert County, AL, Franklin County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL

The radar

The Columbus AFB radar (KGWX), 114 km from the middle of the area, began a volume at 05:13 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 3, 7:09 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 5.2 hours before the alert went out and 180 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 00:00Z on 2012-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 561 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, Birmingham, AL at 00:00Z on 2012-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 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
561 J/kg
Mixed-layer CIN
-123 J/kg
Mixed-layer LCL
1537 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
236 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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 Jun 3, 11:59 PM CDT, 13 minutes earlier.

Area forecast discussion, Jun 3, 11:59 PM CDT, 13 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1159 PM CDT SUN JUN 3 2012

.UPDATE...
FOR 06Z TAFS

&&

.DISCUSSION...
/ISSUED 843 PM CDT SUN JUN 3 2012/
MULTICELL SEVERE CLUSTERS CONTINUE TO MOVE EAST-SOUTHEAST THROUGH
WEST AND INTO MIDDLE TENNESSEE AS OF 01Z. WILL BE CONTINUING WITH THE
CURRENT STORM TIMING AND TOR WATCH FOR THE FORECAST AREA OVERNIGHT
BASED UPON RECENT TRENDS. WILL BE UPDATING THE ZONES SOON TO CHANGE
THE WORDING INVOLVING THE PRECIP CHANCES FOR THE AREA OVERNIGHT. WILL
KEEP THE REST OF THE FORECAST AS IS.

TT

&&

.AVIATION...
FOR 06Z TAFS...BROKEN LINE OF STRONG TO SEVERE STORMS CONTINUE TO
MOVE THROUGH THE FORECAST AREA AS OF 05Z. HAVE LOWERED VISIBILITIES
FOR EXPECTED HEAVY RAINFALL AT BOTH HSV AND MSL UNTIL BETWEEN 09Z TO
10Z. WILL CONTINUE WITH AT LEAST VCTS CONDITIONS AT BOTH TAF SITES
UNTIL EARLY AFTERNOON FOR THE AREA. VFR CONDITIONS ARE EXPECTED FOR
THE AREA FOR THE REST OF THE FORECAST PERIOD.

TT

&&

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

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE
AT WEATHER.GOV/HUNTSVILLE.
Hazardous weather outlook, Jun 3, 11:22 PM CDT, 50 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1122 PM CDT SUN JUN 3 2012

ALZ001>010-016-TNZ076-096-097-041000-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
1122 PM CDT SUN JUN 3 2012

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

.DAY ONE...TONIGHT...

THUNDERSTORMS WILL SPREAD ACROSS THE TENNESSEE VALLEY OVERNIGHT.
WHILE AN ISOLATED SHORT-LIVED TORNADO CANNOT BE RULED OUT...THE
PRIMARY THREATS WILL BE STRONG TO DAMAGING WINDS IN EXCESS OF 60
MPH...LOCALLY HEAVY RAIN AND FREQUENT CLOUD TO GROUND LIGHTNING.
LARGE HAIL WILL ALSO BE A THREAT WITH A FEW DISCRETE STORMS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

THUNDERSTORMS ARE EXPECTED THROUGH THE DAY ON MONDAY...AND THE
STRONGEST STORMS WILL BE CAPABLE OF DAMAGING WINDS...LARGE HAIL...AND
LOCALLY HEAVY RAINFALL. THUNDERSTORM CHANCES WILL TAPER OFF BY LATE
MONDAY NIGHT AS A COLD FRONT SAGS SOUTH OF THE TENNESSEE VALLEY.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL MAY
BE NEEDED LATER TONIGHT.

TT

In the hours before

Special weather statement, Jun 3, 11:10 PM CDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1110 PM CDT SUN JUN 3 2012

ALZ005-006-040445-
LIMESTONE-MADISON-
1110 PM CDT SUN JUN 3 2012

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN LIMESTONE AND WESTERN
MADISON COUNTIES UNTIL 1145 PM CDT...

AT 1110 PM CDT...A STRONG THUNDERSTORM WAS NEAR HARVEST...OR 10
MILES NORTHEAST OF ATHENS...MOVING EAST AT 30 MPH.

PEA SIZE HAIL...WINDS UP TO 50 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...AND HEAVY DOWNPOURS ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  HARVEST...TONEY.
  MADISON.
  MERIDIANVILLE...HAZEL GREEN.

THIS THUNDERSTORM COULD INTENSIFY QUICKLY...SO BE READY TO ACT IF A
WARNING IS ISSUED.

&&

LAT...LON 3499 8655 3476 8655 3479 8688 3491 8688
TIME...MOT...LOC 0410Z 271DEG 25KT 3487 8678

DJN
Special weather statement, Jun 3, 11:41 PM CDT, 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1141 PM CDT SUN JUN 3 2012

ALZ006-009-040530-
JACKSON-MADISON-
1141 PM CDT SUN JUN 3 2012

...SIGNIFICANT WEATHER ADVISORY FOR JACKSON AND MADISON COUNTIES
UNTIL 1230 AM CDT...

AT 1138 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM ELORA TO MAYSVILLE
TO HUNTSVILLE...MOVING EAST AT 30 MPH.

PENNY SIZE HAIL...WINDS UP TO 50 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...AND HEAVY DOWNPOURS ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  FRANCISCO...PRINCETON.
  LARKIN...HOLLYTREE.
  ESTILLFORK...GURLEY.
  GARTH.
  JERICHO...TRENTON.
  LIM ROCK.

THIS THUNDERSTORM COULD INTENSIFY QUICKLY...SO BE READY TO ACT IF A
WARNING IS ISSUED.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

&&

LAT...LON 3481 8584 3467 8611 3469 8663 3481 8647
      3499 8642 3499 8579
TIME...MOT...LOC 0441Z 270DEG 24KT 3495 8630 3481 8634
          3474 8651

CA
Local storm report, Jun 3, 11:55 PM CDT, 17 minutes before
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Special weather statement, Jun 4, 12:05 AM CDT, 7 minutes before
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Local storm report, Jun 4, 12:07 AM CDT, 5 minutes before
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Local storm report, Jun 4, 12:10 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
Jun 3, 10:04 PM CDTSpecial Weather StatementHUNLimestone26 min
Jun 3, 10:07 PM CDTSpecial Weather StatementHUNMadison23 min
Jun 3, 10:21 PM CDTSevere Thunderstorm WarningHUNLimestone24 min
Jun 3, 10:48 PM CDTSpecial Weather StatementHUNJackson27 min
Jun 3, 11:10 PM CDTSpecial Weather StatementHUNMadison35 min
Jun 3, 11:12 PM CDTFlash Flood WarningHUNLauderdale, Limestone3 hr
Jun 3, 11:21 PM CDTSevere Thunderstorm WarningHUNColbert, Lauderdale24 min
Jun 3, 11:41 PM CDTSpecial Weather StatementHUNJackson49 min
Jun 3, 11:46 PM CDTSevere Thunderstorm WarningHUNColbert, Franklin, Lauderdale29 min
Jun 4, 12:05 AM CDTSpecial Weather StatementHUNLimestone25 min
Jun 4, 12:28 AM CDTSpecial Weather StatementHUNDeKalb, Jackson47 min
Jun 4, 12:33 AM CDTSevere Thunderstorm WarningHUNLawrence, Limestone, Madison, Morgan27 min
Jun 4, 1:28 AM CDTSpecial Weather StatementHUNDeKalb32 min
Jun 4, 3:19 AM CDTSevere Thunderstorm WarningHUNFranklin, Lawrence11 min
Jun 4, 4:06 AM CDTSpecial Weather StatementHUNColbert24 min
Jun 4, 4:31 AM CDTSpecial Weather StatementHUNColbert29 min
Jun 4, 4:40 AM CDTSpecial Weather StatementHUNCullman35 min
Jun 4, 4:47 AM CDTSevere Thunderstorm WarningHUNColbert, Franklin43 min
Jun 4, 4:59 AM CDTSpecial Weather StatementHUNColbert, Lawrence46 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012Every severe thunderstorm warning in 2012

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.