Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 123, NWS Huntsville, AL

June 4, 20124 counties in Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Jun 4, 2012, 12:33 AM CDT for 4 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, 12:33 AM CDT (05:33 UTC)
Expired: Jun 4, 2012, 1:00 AM CDT
In force: 27 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

Counties Lawrence County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 83 km from the middle of the area, began a volume at 05:35 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.

Issued	Product	Office	Lasted
Jun 3, 7:09 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 5.6 hours before the alert went out and 163 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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, 34 minutes earlier.

Area forecast discussion, Jun 3, 11:59 PM CDT, 34 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, 1 hour 11 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 4, 12:05 AM CDT, 28 minutes before

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Local storm report, Jun 4, 12:07 AM CDT, 26 minutes before

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Local storm report, Jun 4, 12:10 AM CDT, 23 minutes before

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Local storm report, Jun 4, 12:19 AM CDT, 14 minutes before

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  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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Local storm report, Jun 4, 12:28 AM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1228 AM CDT MON JUN 04 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1220 AM     HAIL             RIPLEY                  34.76N 87.12W
06/04/2012  E1.00 INCH       LIMESTONE          AL   TRAINED SPOTTER

            QUARTER SIZE HAIL WAS REPORTED.

&&

TT

Special weather statement, Jun 4, 12:28 AM CDT, 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1228 AM CDT MON JUN 4 2012

ALZ009-010-040615-
DE KALB-JACKSON-
1228 AM CDT MON JUN 4 2012

...SIGNIFICANT WEATHER ADVISORY FOR DEKALB AND JACKSON COUNTIES UNTIL
115 AM CDT...

AT 1228 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR PISGAH...OR 11 MILES NORTH OF
RAINSVILLE...MOVING EAST AT 35 MPH.

PENNY SIZE HAIL...WINDS UP TO 40 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...AND VERY HEAVY DOWNPOURS ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  HENAGAR...FLAT ROCK.
  BEATY CROSSROADS...IDER.
  HAMMONDVILLE...VALLEY HEAD.
  MENTONE...SULPHER SPRINGS.

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 3449 8557 3447 8556 3446 8558 3443 8558
      3437 8562 3447 8607 3447 8609 3450 8610
      3487 8597 3481 8556 3453 8551
TIME...MOT...LOC 0528Z 283DEG 32KT 3464 8581

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 10:04 PM CDT	Special Weather Statement	HUN	Limestone	26 min
Jun 3, 10:07 PM CDT	Special Weather Statement	HUN	Madison	23 min
Jun 3, 10:21 PM CDT	Severe Thunderstorm Warning	HUN	Limestone	24 min
Jun 3, 10:48 PM CDT	Special Weather Statement	HUN	Jackson	27 min
Jun 3, 11:10 PM CDT	Special Weather Statement	HUN	Madison	35 min
Jun 3, 11:12 PM CDT	Flash Flood Warning	HUN	Lauderdale, Limestone	3 hr
Jun 3, 11:21 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	24 min
Jun 3, 11:41 PM CDT	Special Weather Statement	HUN	Jackson	49 min
Jun 3, 11:46 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lauderdale	29 min
Jun 4, 12:05 AM CDT	Special Weather Statement	HUN	Limestone	25 min
Jun 4, 12:12 AM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lauderdale, Lawrence, Limestone	27 min
Jun 4, 12:28 AM CDT	Special Weather Statement	HUN	DeKalb, Jackson	47 min
Jun 4, 1:28 AM CDT	Special Weather Statement	HUN	DeKalb	32 min
Jun 4, 3:19 AM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lawrence	11 min
Jun 4, 4:06 AM CDT	Special Weather Statement	HUN	Colbert	24 min
Jun 4, 4:31 AM CDT	Special Weather Statement	HUN	Colbert	29 min
Jun 4, 4:40 AM CDT	Special Weather Statement	HUN	Cullman	35 min
Jun 4, 4:47 AM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin	43 min
Jun 4, 4:59 AM CDT	Special Weather Statement	HUN	Colbert, Lawrence	46 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every 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.