Alert archive / Alabama / Special Weather Statements in 2016

Special Weather Statement, NWS Huntsville, AL

May 12, 2016Cullman County, Alabama

NWS Huntsville, AL issued this special weather statement at May 12, 2016, 6:21 PM CDT for Cullman County, Alabama. It was in force for 24 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: May 12, 2016, 6:21 PM CDT (23:21 UTC)
Expired: May 12, 2016, 6:45 PM CDT
In force: 24 min
Issued by: NWS Huntsville, AL

County Cullman County, AL

The radar

The Birmingham radar (KBMX), 98 km from the middle of the area, began a volume at 23:23 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, 11.4 hours before the alert went out and 96 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: 919 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 957 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

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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 May 12, 2:28 PM CDT, 3 hours 53 minutes earlier.

Area forecast discussion, May 12, 2:28 PM CDT, 3 hours 53 minutes before

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Hazardous weather outlook, May 12, 2:41 AM CDT, 15 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HUNTSVILLE AL
241 AM CDT THU MAY 12 2016

ALZ001>010-016-TNZ076-096-097-122100-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DE KALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
241 AM CDT THU MAY 12 2016

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

.DAY ONE...TODAY AND TONIGHT...

A COLD FRONT WILL BRING THE POTENTIAL FOR A FEW SEVERE THUNDERSTORMS
THIS AFTERNOON AND TONIGHT ACROSS THE TENNESSEE VALLEY. THE PRIMARY
THREATS WILL BE LARGE HAIL UP TO THE SIZE OF QUARTERS AND DAMAGING
WINDS UP TO 60 MPH. THE THUNDERSTORM ACTIVITY WILL TAPER OFF AROUND
MIDNIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

SCATTERED THUNDERSTORMS WILL BE POSSIBLE MONDAY THROUGH WEDNESDAY.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL
MAY BE POSSIBLE THIS AFTERNOON AND EVENING.

In the hours before

Special weather statement, May 12, 5:15 PM CDT, 1 hour 6 minutes before

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Local storm report, May 12, 5:39 PM CDT, 42 minutes before

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Special weather statement, May 12, 5:50 PM CDT, 31 minutes before

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Special weather statement, May 12, 6:00 PM CDT, 21 minutes before

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Special weather statement, May 12, 6:06 PM CDT, 15 minutes before

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Special weather statement, May 12, 6:21 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
May 12, 7:18 AM CDT	Special Weather Statement	HUN	Jackson	42 min
May 12, 8:06 AM CDT	Special Weather Statement	HUN	Jackson	39 min
May 12, 8:34 AM CDT	Special Weather Statement	HUN	Colbert	41 min
May 12, 11:17 AM CDT	Special Weather Statement	HUN	Cullman	43 min
May 12, 11:19 AM CDT	Special Weather Statement	HUN	Cullman	41 min
May 12, 11:30 AM CDT	Special Weather Statement	HUN	Madison	45 min
May 12, 12:01 PM CDT	Special Weather Statement	HUN	Morgan	44 min
May 12, 12:26 PM CDT	Special Weather Statement	HUN	Morgan	49 min
May 12, 12:32 PM CDT	Special Weather Statement	HUN	Morgan	43 min
May 12, 12:55 PM CDT	Special Weather Statement	HUN	Madison	50 min
May 12, 1:00 PM CDT	Special Weather Statement	HUN	Madison	45 min
May 12, 1:14 PM CDT	Special Weather Statement	HUN	Madison	46 min
May 12, 1:24 PM CDT	Special Weather Statement	HUN	Jackson	51 min
May 12, 1:27 PM CDT	Special Weather Statement	HUN	DeKalb	48 min
May 12, 1:34 PM CDT	Special Weather Statement	HUN	Limestone	41 min
May 12, 3:46 PM CDT	Special Weather Statement	HUN	Colbert	29 min
May 12, 3:47 PM CDT	Special Weather Statement	HUN	Lauderdale	43 min
May 12, 4:06 PM CDT	Special Weather Statement	HUN	Colbert	24 min
May 12, 4:35 PM CDT	Special Weather Statement	HUN	Lauderdale	40 min
May 12, 4:41 PM CDT	Special Weather Statement	HUN	Franklin	49 min
May 12, 4:49 PM CDT	Special Weather Statement	HUN	Limestone	41 min
May 12, 5:02 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale, Lawrence, Limestone	43 min
May 12, 5:10 PM CDT	Special Weather Statement	HUN	Franklin	50 min
May 12, 5:38 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison	25 min
May 12, 6:00 PM CDT	Special Weather Statement	HUN	Lawrence, Morgan	45 min
May 12, 6:06 PM CDT	Special Weather Statement	HUN	Madison	39 min
May 12, 6:26 PM CDT	Special Weather Statement	HUN	Jackson	34 min
May 12, 6:50 PM CDT	Special Weather Statement	HUN	Cullman, Morgan	40 min
May 12, 11:15 AM CDT	Special Weather Statement	HUN	Franklin	45 min
May 12, 12:28 PM CDT	Special Weather Statement	HUN	Franklin	47 min
May 12, 1:56 PM CDT	Special Weather Statement	HUN	Franklin	49 min
May 12, 2:09 PM CDT	Special Weather Statement	HUN	Lincoln	51 min
May 12, 2:27 PM CDT	Special Weather Statement	HUN	Franklin	48 min
May 12, 2:35 PM CDT	Special Weather Statement	HUN	Lincoln	25 min
May 12, 5:15 PM CDT	Special Weather Statement	HUN	Lincoln	30 min
May 12, 5:50 PM CDT	Special Weather Statement	HUN	Lincoln	40 min

Nearby

Special Weather Statements in Alabama, 2016 Every special weather statement 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.