Alert archive / Alabama / Special Weather Statements in 2011

Special Weather Statement, NWS Birmingham, AL

May 26, 2011Jefferson County, Tuscaloosa County, Alabama

NWS Birmingham, AL issued this special weather statement at May 26, 2011, 2:49 AM CDT for Jefferson County, Tuscaloosa County, Alabama. It was in force for 41 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 26, 2011, 2:49 AM CDT (07:49 UTC)
Expired: May 26, 2011, 3:30 AM CDT
In force: 41 min
Issued by: NWS Birmingham, AL

Counties Jefferson County, AL, Tuscaloosa County, AL

The radar

The Birmingham radar (KBMX), 64 km from the middle of the area, began a volume at 07:53 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, 7.8 hours before the alert went out and 63 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: 785 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 2035 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.1

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 Birmingham, AL wrote its last area forecast discussion before this special weather statement went out at May 25, 11:57 PM CDT, 2 hours 52 minutes earlier.

Area forecast discussion, May 25, 11:57 PM CDT, 2 hours 52 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1157 PM CDT WED MAY 25 2011

.UPDATE...FOR 06Z AVIATION.

&&

.DISCUSSION...

UPDATED FORECAST PRODUCTS FOR ADDITION OF TORNADO WATCH NUMBER 376
ISSUED FOR MARION AND WINSTON COUNTIES UNTIL 4 AM...WITH LINE OF
STORMS CURRENTLY ACROSS MISSISSIPPI...TENNESSEE AND NORTHWARD.
HAVE ADJUSTED THUNDERSTORM WORDING ACROSS NORTHWEST COUNTIES...
OTHERWISE MAJORITY OF FORECAST UNCHANGED. NO MAJOR CHANGES TO
TEMPERATURES EITHER. UPDATE ALREADY OUT.

&&

.AVIATION...06Z TAF DISCUSSION.

LINE OF THUNDERSTORMS MOVING INTO WEST ALABAMA IS PROGGED TO
WEAKEN AND DISSIPATE OVER THE NEXT COUPLE OF HOURS. THE GUST FRONT
ADVANCING AHEAD OF THE LINE IS PRODUCING 40 MPH WINDS IN SOME
PLACES. RADAR TRENDS SEEM TO AGREE WITH SHORT TERM MODELS AND WILL
ONLY MENTION THE SHOWERS AT TCL BETWEEN 06Z AND 09Z. WILL HAVE TO
FOLLOW THE RADAR TRENDS CLOSELY TO MAKE SURE THE WEATHER REMAINS
ON SCHEDULE...OTHERWISE SOME SHORT TERM AMENDMENTS WILL BE NEEDED.
LATER IN THE MORNING...THE UPPER LOW OVER THE MIDWEST WILL
PROGRESS EASTWARD HELPING TO INITIATE ADDITION SHOWERS AND
THUNDERSTORMS OVER CENTRAL ALABAMA. BECAUSE TIMING REMAINS AN
UNCERTAINTY...WILL ONLY MENTION VCTS FOR THE MOST LIKELY TIME
PERIODS.

IN ADDITION TO THE ONGOING WEATHER CONCERNS...STRATUS IS EXPECTED
TO BUILD BACK INTO THE AREA OVERNIGHT. CEILINGS ARE EXPECTED TO
PREDOMINATELY REMAIN MVFR ALTHOUGH A SHORT DURATION DIP INTO IFR
WILL BE POSSIBLE.

WINDS REMAIN SOUTHERLY WITH GUSTS TO 25 KTS POSSIBLE IN SOME
LOCATIONS THROUGH 00Z. A FRONT WILL PASS THROUGH THE CENTRAL
ALABAMA BETWEEN 00Z AND 06Z CAUSING A WIND SHIFT TO THE WEST.

NOTICE...KEET TAF WILL HAVE (AMD LTD TO VIS WIND AND WX) AMENDED
TO THE END OF THE FORECAST UNTIL FURTHER NOTICE. THE CEILOMETER
DATA WILL BE GOING THROUGH NUMEROUS TESTS AND MONITORED FOR
ACCURACY.

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

08/88

Hazardous weather outlook, May 26, 2:26 AM CDT, 23 minutes before

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In the hours before

Special weather statement, May 25, 11:35 PM CDT, 3 hours 14 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1135 PM CDT WED MAY 25 2011

ALZ014-260515-
WINSTON AL-
1135 PM CDT WED MAY 25 2011

...SIGNIFICANT WEATHER ADVISORY FOR WINSTON COUNTY UNTIL 1215 AM
CDT...

AT 1133 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM WHICH PRODUCED A GUST FRONT...OR AN AREA OF STRONG
WINDS NEAR BRINN...OR 7 MILES SOUTHWEST OF HALEYVILLE...MOVING EAST
AT 45 MPH.

WIND GUSTS UP TO 40 MPH ARE EXPECTED ALONG THIS GUST FRONT.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  HALEYVILLE...
  LYNN...
  ARLEY...
  NEEDMORE...
  ASHBANK...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

&&

LAT...LON 3430 8711 3430 8710 3399 8711 3399 8715
      3401 8717 3399 8720 3400 8722 3399 8751
      3400 8762 3401 8764 3431 8763
TIME...MOT...LOC 0433Z 270DEG 38KT 3419 8769

10/ARM

Special weather statement, May 26, 12:18 AM CDT, 2 hours 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1218 AM CDT THU MAY 26 2011

ALZ011>015-260600-
FAYETTE AL-LAMAR AL-MARION AL-WALKER AL-WINSTON AL-
1218 AM CDT THU MAY 26 2011

...SIGNIFICANT WEATHER ADVISORY FOR WINSTON...WALKER...SOUTHEASTERN
MARION...SOUTHERN LAMAR AND FAYETTE COUNTIES UNTIL 100 AM CDT...

AT 1217 AM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM MORELAND TO MILLPORT...AND
MOVING EAST AT 50 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH
FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  MILLPORT...
  FAYETTE...
  CARBON HILL...
  ARLEY...
  JASPER...

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3431 8734 3429 8710 3399 8710 3397 8713
      3390 8708 3390 8701 3386 8696 3380 8696
      3377 8703 3373 8703 3351 8728 3352 8732
      3359 8732 3360 8738 3361 8763 3358 8763
      3358 8767 3353 8766 3352 8773 3354 8824
TIME...MOT...LOC 0518Z 277DEG 42KT 3424 8730 3354 8811

17/KLAWS

Local storm report, May 26, 12:56 AM CDT, 1 hour 53 minutes before

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Special weather statement, May 26, 2:10 AM CDT, 39 minutes before

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Special weather statement, May 26, 2:40 AM CDT, 9 minutes before

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Special weather statement, May 26, 2:49 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 10:56 PM CDT	Special Weather Statement	BMX	Marion	49 min
May 25, 11:25 PM CDT	Special Weather Statement	BMX	Lamar	50 min
May 25, 11:35 PM CDT	Special Weather Statement	BMX	Winston	40 min
May 26, 12:18 AM CDT	Special Weather Statement	BMX	Fayette, Walker, Winston	42 min
May 26, 12:32 AM CDT	Severe Thunderstorm Warning	BMX	Winston	28 min
May 26, 12:50 AM CDT	Severe Thunderstorm Warning	BMX	Walker	14 min
May 26, 1:22 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Pickens	38 min
May 26, 2:10 AM CDT	Special Weather Statement	BMX	Fayette, Walker, Winston	50 min
May 26, 2:40 AM CDT	Special Weather Statement	BMX	Fayette	50 min
May 26, 3:20 AM CDT	Special Weather Statement	BMX	Walker	40 min
May 26, 7:43 AM CDT	Special Weather Statement	BMX	Coosa	47 min
May 26, 7:48 AM CDT	Special Weather Statement	BMX	Marion	27 min
May 26, 8:41 AM CDT	Special Weather Statement	BMX	Calhoun, Cherokee	49 min
May 26, 12:21 PM CDT	Severe Thunderstorm Warning	BMX	Marengo	24 min
May 26, 1:07 PM CDT	Severe Thunderstorm Warning	BMX	Dallas	38 min
May 26, 1:14 PM CDT	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	46 min
May 26, 1:20 PM CDT	Special Weather Statement	BMX	Etowah, St. Clair	40 min
May 26, 1:27 PM CDT	Special Weather Statement	BMX	Cherokee	48 min
May 26, 1:32 PM CDT	Severe Thunderstorm Warning	BMX	Chilton	43 min
May 26, 1:35 PM CDT	Special Weather Statement	BMX	Jefferson	40 min
May 26, 1:37 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	23 min
May 26, 1:52 PM CDT	Severe Thunderstorm Warning	BMX	Elmore, Lowndes, Montgomery	38 min
May 26, 1:56 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Etowah	49 min
May 26, 2:10 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Pike	33 min
May 26, 2:16 PM CDT	Areal Flood Advisory	BMX	Autauga, Elmore, Lowndes, Montgomery	119 min
May 26, 2:20 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Coosa, Elmore	40 min
May 26, 2:28 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Macon, Russell	32 min
May 26, 2:31 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah	44 min
May 26, 2:47 PM CDT	Severe Thunderstorm Warning	BMX	Macon, Montgomery	13 min
May 26, 2:51 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Coosa, Talladega, Tallapoosa	24 min
May 26, 2:52 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Talladega	23 min
May 26, 2:57 PM CDT	Severe Thunderstorm Warning	BMX	Macon	18 min
May 26, 3:08 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Shelby	40 min
May 26, 3:15 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah	45 min
May 26, 3:21 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Tallapoosa	24 min
May 26, 3:35 PM CDT	Severe Thunderstorm Warning	BMX	Chambers	25 min
May 26, 3:36 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, St. Clair	39 min
May 26, 3:40 PM CDT	Severe Thunderstorm Warning	BMX	Russell	35 min
May 26, 3:45 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, Walker	45 min
May 26, 3:51 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	24 min
May 26, 3:53 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens	26 min
May 26, 3:54 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Randolph	36 min
May 26, 4:08 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Etowah, St. Clair	52 min
May 26, 4:23 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	52 min
May 26, 4:51 PM CDT	Severe Thunderstorm Warning	BMX	Blount	24 min

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.