Alert archive / Alabama / Special Weather Statements in 2011

Special Weather Statement, NWS Huntsville, AL

August 7, 2011Cullman County, Alabama

NWS Huntsville, AL issued this special weather statement at Aug 7, 2011, 7:50 PM CDT for Cullman County, Alabama. It was in force for 40 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: Aug 7, 2011, 7:50 PM CDT (00:50 UTC)
Expired: Aug 7, 2011, 8:30 PM CDT
In force: 40 min
Issued by: NWS Huntsville, AL

County Cullman County, AL

The radar

The Birmingham radar (KBMX), 100 km from the middle of the area, began a volume at 00:51 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 00:00Z, 0.8 hours before the alert went out and 99 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: 873 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 1649 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 87 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 Aug 7, 7:01 PM CDT, 49 minutes earlier.

Area forecast discussion, Aug 7, 7:01 PM CDT, 49 minutes before

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Hazardous weather outlook, Aug 7, 1:07 PM CDT, 6 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HUNTSVILLE AL
107 PM CDT SUN AUG 7 2011

ALZ001>010-016-TNZ076-096-097-080300-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
107 PM CDT SUN AUG 7 2011

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

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

DANGEROUS HEAT INDICES ARE EXPECTED TO SPREAD ACROSS THE
AREA...ESPECIALLY OVER NORTHWEST ALABAMA WHERE HEAT INDICES ARE
EXPECTED TO RISE BETWEEN 105 AND 110. ELSEWHERE...HEAT INDICES ARE
FORECAST TO BE BETWEEN 100 AND 105. PLEASE REFER TO THE HEAT ADVISORY
THAT HAS BEEN ISSUED FOR NORTHWEST ALABAMA FOR MORE INFORMATION.

AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED TODAY ACROSS THE AREA.
THE STRONGEST STORMS MAY BRING GUSTY WINDS...FREQUENT LIGHTNING...AND
LOCALLY HEAVY RAINFALL.

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

DANGEROUS HEAT INDICES ARE EXPECTED TO OCCUR AGAIN ON MONDAY ACROSS
ALL OF THE TENNESSEE VALLEY WITH HEAT INDICES RISING BETWEEN 100 AND
105.

MAINLY AFTERNOON AND EVENING SCATTERED THUNDERSTORMS ARE EXPECTED
THROUGH FRIDAY. A FEW STRONG STORMS WILL BE POSSIBLE EACH DAY...
WITH GUSTY WINDS...FREQUENT LIGHTNING...AND LOCALLY HEAVY RAINFALL
THE PRIMARY HAZARDS.

.SPOTTER CALL TO ACTION STATEMENT...

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

SL/CCC

In the hours before

Special weather statement, Aug 7, 6:10 PM CDT, 1 hour 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
610 PM CDT SUN AUG 7 2011

ALZ001-002-004-005-080000-
COLBERT-LAUDERDALE-LAWRENCE-LIMESTONE-
610 PM CDT SUN AUG 7 2011

...SIGNIFICANT WEATHER ADVISORY FOR COLBERT...LAUDERDALE...LAWRENCE
AND LIMESTONE COUNTIES UNTIL 700 PM CDT...

AT 605 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS NEAR ELGIN...OR 18 MILES EAST OF
FLORENCE...MOVING SOUTHEAST AT 15 MPH.

NICKEL 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...
  ROGERSVILLE...TOWN CREEK.
  GOOD SPRINGS.
  OLIVER.
  NORTH COURTLAND...MT ROZELL.
  COURTLAND...CAIRO.
  COXEY.

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO THE
STORM TO BE STRUCK BY LIGHTNING. SEEK SAFE SHELTER IMMEDIATELY.

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 3485 8679 3466 8707 3469 8710 3464 8711
      3449 8731 3477 8760 3497 8716
TIME...MOT...LOC 2310Z 301DEG 15KT 3482 8734

CA

Special weather statement, Aug 7, 6:20 PM CDT, 1 hour 30 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
620 PM CDT SUN AUG 7 2011

ALZ003-080000-
FRANKLIN-
620 PM CDT SUN AUG 7 2011

...SIGNIFICANT WEATHER ADVISORY FOR FRANKLIN COUNTY UNTIL 700 PM
CDT...

AT 619 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR HALLTOWN...OR NEAR RED BAY...MOVING
SOUTHEAST AT 30 MPH. THIS THUNDERSTORM IS IN THE PROCESS OF
COLLAPSING...AND WILL BE CAPABLE OF STRONG GUSTY OUTFLOW WINDS
SEVERAL MINUTES BEFORE HEAVY RAINFALL OCCURS.

NICKEL 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...
  HALLTOWN.
  VINA.
  DEMPSEY.
  ATWOOD.
  BELGREEN...HODGES.
  DUKETON...ROCKWOOD.

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO THE
STORM TO BE STRUCK BY LIGHTNING. SEEK SAFE SHELTER IMMEDIATELY.

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 3458 8815 3459 8814 3457 8797 3458 8788
      3455 8770 3431 8770 3431 8811 3433 8818
TIME...MOT...LOC 2320Z 298DEG 25KT 3449 8808

CA

Special weather statement, Aug 7, 7:20 PM CDT, 30 minutes before

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Local storm report, Aug 7, 7:31 PM CDT, 19 minutes before

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Local storm report, Aug 7, 7:37 PM CDT, 13 minutes before

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Special weather statement, Aug 7, 7:50 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
Aug 7, 7:14 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	21 min
Aug 7, 7:20 PM CDT	Special Weather Statement	HUN	Cullman, Morgan	40 min
Aug 7, 8:38 PM CDT	Special Weather Statement	HUN	Jackson	52 min
Aug 7, 8:56 PM CDT	Special Weather Statement	HUN	Franklin	49 min
Aug 8, 2:18 AM CDT	Special Weather Statement	HUN	Colbert	57 min
Aug 8, 3:00 AM CDT	Heat Advisory	HUN	Colbert, Franklin, Lauderdale, Lawrence	12 hr
Aug 8, 4:43 AM CDT	Special Weather Statement	HUN	Cullman	47 min
Aug 8, 12:44 PM CDT	Special Weather Statement	HUN	Franklin, Lawrence	46 min
Aug 8, 1:30 PM CDT	Special Weather Statement	HUN	Lauderdale	45 min
Aug 8, 1:36 PM CDT	Special Weather Statement	HUN	Lawrence, Morgan	39 min
Aug 8, 1:51 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	54 min
Aug 8, 1:56 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, Morgan	64 min
Aug 8, 2:06 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, Lawrence, Morgan	54 min
Aug 8, 2:14 PM CDT	Special Weather Statement	HUN	Limestone	31 min
Aug 8, 2:30 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Morgan	44 min
Aug 8, 2:39 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale, Lawrence, Limestone	66 min
Aug 8, 2:43 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison	62 min
Aug 8, 2:52 PM CDT	Severe Thunderstorm Warning	HUN	Madison, Marshall, Morgan	53 min
Aug 8, 3:03 PM CDT	Flash Flood Warning	HUN	Colbert, Lauderdale	117 min
Aug 8, 3:05 PM CDT	Special Weather Statement	HUN	Cullman	25 min
Aug 8, 3:17 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison	58 min
Aug 8, 3:18 PM CDT	Flash Flood Warning	HUN	Cullman, Marshall, Morgan	118 min
Aug 8, 3:24 PM CDT	Flash Flood Warning	HUN	Lauderdale, Limestone, Madison, Morgan	2 hr
Aug 8, 3:34 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	56 min
Aug 8, 3:49 PM CDT	Flash Flood Warning	HUN	Jackson, Madison, Marshall	101 min
Aug 8, 4:10 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson	65 min
Aug 8, 4:17 PM CDT	Flash Flood Warning	HUN	DeKalb, Jackson	116 min
Aug 8, 4:54 PM CDT	Special Weather Statement	HUN	Cullman	36 min
Aug 8, 5:29 PM CDT	Areal Flood Warning	HUN	Limestone, Madison, Morgan	2 hr

Nearby

Special Weather Statements in Alabama, 2011 Every special weather statement in 2011

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.