Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Huntsville, AL

July 4, 2012Lawrence County, Alabama

NWS Huntsville, AL issued this special weather statement at Jul 4, 2012, 6:13 PM CDT for Lawrence County, Alabama. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 4, 2012, 6:13 PM CDT (23:13 UTC)
Expired: Jul 4, 2012, 6:45 PM CDT
In force: 32 min
Issued by: NWS Huntsville, AL

County Lawrence County, AL

The radar

The Northeast Alabama radar (KHTX), 117 km from the middle of the area, began a volume at 23:13 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

Birmingham, AL (KBMX), launched 12:00Z, 11.2 hours before the alert went out and 162 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: 756 J/kg
Mixed-layer CIN: -154 J/kg
Mixed-layer LCL: 1115 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 4, 3:13 PM CDT, 3 hours earlier.

Area forecast discussion, Jul 4, 3:13 PM CDT, 3 hours before

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Hazardous weather outlook, Jul 4, 12:49 PM CDT, 5 hours 24 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1249 PM CDT WED JUL 4 2012

ALZ001>010-016-TNZ076-096-097-050300-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
1249 PM CDT WED JUL 4 2012

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

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

ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON
AND INTO THIS EVENING. A FEW STORMS MAY BE STRONG TO SEVERE...WITH
DAMAGING WINDS...LOCALLY HEAVY RAINFALL AND FREQUENT LIGHTNING
POSSIBLE.

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

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE FROM THURSDAY
THROUGH MONDAY...MAINLY IN THE AFTERNOON AND EVENING HOURS.
A FEW STORMS MAY BE STRONG TO SEVERE...WITH DAMAGING WINDS...LOCALLY
HEAVY RAINFALL...AND FREQUENT LIGHTNING.

AN APPROACHING COLD FRONT WILL INCREASE THE CHANCES FOR MORE
WIDESPREAD COVERAGE OF THUNDERSTORMS ON TUESDAY AND WEDNESDAY.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS
NOT ANTICIPATED AT THIS TIME.

In the hours before

Special weather statement, Jul 4, 2:04 PM CDT, 4 hours 9 minutes before

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Special weather statement, Jul 4, 4:29 PM CDT, 1 hour 44 minutes before

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Special weather statement, Jul 4, 4:53 PM CDT, 1 hour 20 minutes before

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Special weather statement, Jul 4, 4:55 PM CDT, 1 hour 18 minutes before

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Special weather statement, Jul 4, 5:31 PM CDT, 42 minutes before

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Special weather statement, Jul 4, 6:13 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 2:04 PM CDT	Special Weather Statement	HUN	Jackson	26 min
Jul 4, 3:24 PM CDT	Heat Advisory	HUN	Colbert, Franklin, Lauderdale, Lawrence, Limestone, Madison and 1 more	26 hr
Jul 4, 4:29 PM CDT	Special Weather Statement	HUN	Marshall	46 min
Jul 4, 4:53 PM CDT	Special Weather Statement	HUN	Morgan	52 min
Jul 4, 4:55 PM CDT	Special Weather Statement	HUN	Franklin	50 min
Jul 4, 5:31 PM CDT	Special Weather Statement	HUN	Cullman	44 min
Jul 4, 6:25 PM CDT	Special Weather Statement	HUN	Limestone	35 min

Nearby

Special Weather Statements in Alabama, 2012 Every special weather statement 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.