Alert archive / Alabama / Special Weather Statements in 2011

Special Weather Statement, NWS Birmingham, AL

July 4, 2011Jefferson County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 4, 2011, 1:44 PM CDT for Jefferson County, Alabama. It was in force for 46 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, 2011, 1:44 PM CDT (18:44 UTC)
Expired: Jul 4, 2011, 2:30 PM CDT
In force: 46 min
Issued by: NWS Birmingham, AL

County Jefferson County, AL

The radar

The Birmingham radar (KBMX), 42 km from the middle of the area, began a volume at 18:48 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 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 Jul 4, 12:15 PM CDT, 1 hour 29 minutes earlier.

Area forecast discussion, Jul 4, 12:15 PM CDT, 1 hour 29 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1215 PM CDT MON JUL 4 2011

.UPDATE...FOR AVIATION DISCUSSION.

&&

.DISCUSSION...

TWEAKED THE GRIDS TO REFLECT CURRENT TRENDS IN
TEMPERATURES...ESPECIALLY FOR AREAS THAT OBSERVED RAINFALL THIS
MORNING THROUGHOUT THE SOUTHEAST COUNTIES...AND ALSO TWEAKED
TEMPERATURE GRIDS UPWARD FOR TODAY A BIT. AFTER PERFORMING OUR
LOCAL CONVECTIVE INITIATION PROJECT THIS MORNING...IT APPEARS THAT
A WEAK SHALLOW BOUNDARY WILL BE DRAPED ACROSS MUCH OF THE FORECAST
AREA TODAY...WHICH WILL ACT AS A TRIGGERING MECHANISM FOR MORE
SHOWERS AND STORMS THIS AFTERNOON. ALSO...OUTFLOW BOUNDARIES
OBSERVED ON VISIBLE SATELLITE AND RADAR LEFT OVER FROM LAST
NIGHT'S STORMS...AND AN OUTFLOW BOUNDARY MOVING NORTHWARD FROM THE
CONVECTIVE ACTIVITY THIS MORNING IN THE SOUTHEAST COUNTIES...WILL
ACT AS ADDITIONAL TRIGGERING MECHANISMS. BASED ON THIS MORNING'S
SOUNDING...LFC LEVELS ARE FAIRLY LOW...WHICH WILL ALLOW PARCELS TO
BE LIFTED BY THOSE OUTFLOW BOUNDARIES SUFFICIENTLY TO FORM
CONVECTION THIS AFTERNOON. BASED ON THESE FINDINGS...WENT AHEAD
AND INCREASED POPS A BIT TO REFLECT THIS MORNING'S ANALYSIS. UPDATES
ARE OUT.

56/GOGGINS

&&

AVIATION...18Z TAF DISCUSSION.

SEVERAL OUTFLOW BOUNDARIES APPROACHING THE AREA COULD SPARK SOME
AFTERNOON THUNDERSTORMS. WITH HIGH PRESSURE NO LONGER DOMINATING THE
WEATHER PATTERN...THERE SHOULD BE NO SUPPRESSION OF CONVECTION. WENT
AHEAD AND MENTIONED VCTS AT ALL SITES SINCE CONFIDENCE IS NOT HIGH
AS TO WHERE EXACTLY THUNDERSTORMS WILL INITIATE AND PROPAGATE
THROUGHOUT THE DAY. AMENDMENTS MAY BE NECESSARY THIS AFTERNOON ONCE
CONVECTION BEGINS. WINDS WILL BECOME CALM ONCE AGAIN AFTER SUNSET
AND THE THUNDERSTORM ACTIVITY CLEARS. LOW CLOUDS WILL LIKELY MOVE
INTO THE NORTHERN 4 SITES DURING THE MORNING HOURS. DOES NOT LOOK
LIKE CLOUDS WILL MAKE IT AS FAR SOUTH AS MGM OR TOI...SO WITH
ABUNDANT MOISTURE AGAIN...EXPECT BR FOR A COUPLE OF HOURS TOMORROW
MORNING.

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.

73

&&

.PRELIMINARY POINT TEMPS/POPS...
GADSDEN     93  68  90  66  90 /  50  50  50  30  30
ANNISTON    95  71  92  69  92 /  50  50  50  30  40
BIRMINGHAM  96  75  93  73  93 /  50  50  50  30  30
TUSCALOOSA  98  73  94  71  95 /  50  50  50  30  30
CALERA      94  71  92  70  92 /  50  50  50  30  40
AUBURN      93  72  92  71  93 /  50  30  40  30  40
MONTGOMERY  95  72  94  70  94 /  50  30  40  40  40
TROY        94  70  93  68  93 /  70  30  30  30  50

&&

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

&&

56

Hazardous weather outlook, Jul 4, 9:27 AM CDT, 4 hours 17 minutes before

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In the hours before

Local storm report, Jul 4, 11:04 AM CDT, 2 hours 40 minutes before

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Special weather statement, Jul 4, 12:50 PM CDT, 54 minutes before

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Special weather statement, Jul 4, 1:30 PM CDT, 14 minutes before

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Special weather statement, Jul 4, 1:34 PM CDT, 10 minutes before

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Special weather statement, Jul 4, 1:36 PM CDT, 8 minutes before

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Special weather statement, Jul 4, 1:44 PM 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
Jul 3, 7:23 PM CDT	Special Weather Statement	BMX	Fayette	52 min
Jul 3, 7:59 PM CDT	Special Weather Statement	BMX	Winston	46 min
Jul 3, 8:07 PM CDT	Special Weather Statement	BMX	Pickens	38 min
Jul 3, 8:16 PM CDT	Special Weather Statement	BMX	Tuscaloosa	44 min
Jul 3, 8:38 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Pickens	52 min
Jul 3, 8:45 PM CDT	Special Weather Statement	BMX	Walker	45 min
Jul 3, 8:58 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Walker	47 min
Jul 3, 9:32 PM CDT	Special Weather Statement	BMX	Pickens	43 min
Jul 3, 9:46 PM CDT	Special Weather Statement	BMX	Walker	29 min
Jul 3, 10:21 PM CDT	Special Weather Statement	BMX	Blount	39 min
Jul 4, 12:50 PM CDT	Special Weather Statement	BMX	Marengo	40 min
Jul 4, 1:30 PM CDT	Special Weather Statement	BMX	Walker	45 min
Jul 4, 1:36 PM CDT	Special Weather Statement	BMX	Greene	39 min
Jul 4, 1:40 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair	35 min
Jul 4, 1:40 PM CDT	Severe Thunderstorm Warning	BMX	Walker	50 min
Jul 4, 1:59 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale	46 min
Jul 4, 2:04 PM CDT	Areal Flood Advisory	BMX	Jefferson	3 hr
Jul 4, 2:14 PM CDT	Special Weather Statement	BMX	Randolph	46 min
Jul 4, 2:18 PM CDT	Special Weather Statement	BMX	Greene	42 min
Jul 4, 2:26 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	45 min
Jul 4, 2:30 PM CDT	Special Weather Statement	BMX	Jefferson	45 min
Jul 4, 2:32 PM CDT	Special Weather Statement	BMX	Bibb	43 min
Jul 4, 2:34 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Hale, Perry, Tuscaloosa	41 min
Jul 4, 2:39 PM CDT	Special Weather Statement	BMX	Marengo	51 min
Jul 4, 2:52 PM CDT	Special Weather Statement	BMX	Jefferson	38 min
Jul 4, 2:56 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Shelby, Tuscaloosa	49 min
Jul 4, 2:58 PM CDT	Severe Thunderstorm Warning	BMX	Sumter	47 min
Jul 4, 3:19 PM CDT	Special Weather Statement	BMX	Greene	41 min
Jul 4, 3:29 PM CDT	Areal Flood Advisory	BMX	Sumter	3 hr
Jul 4, 3:30 PM CDT	Special Weather Statement	BMX	Tuscaloosa	45 min
Jul 4, 3:44 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, St. Clair, Shelby, Tuscaloosa	46 min
Jul 4, 3:49 PM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	3 hr
Jul 4, 4:06 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa, Walker	39 min
Jul 4, 4:08 PM CDT	Special Weather Statement	BMX	Winston	52 min
Jul 4, 4:13 PM CDT	Special Weather Statement	BMX	Blount	47 min
Jul 4, 4:27 PM CDT	Special Weather Statement	BMX	Shelby	48 min
Jul 4, 4:40 PM CDT	Special Weather Statement	BMX	Clay	50 min
Jul 4, 4:42 PM CDT	Flash Flood Warning	BMX	Sumter	3 hr
Jul 4, 4:47 PM CDT	Special Weather Statement	BMX	Fayette	43 min
Jul 4, 5:07 PM CDT	Special Weather Statement	BMX	Marion	38 min
Jul 4, 5:18 PM CDT	Severe Thunderstorm Warning	BMX	Chilton, Coosa	31 min
Jul 4, 5:37 PM CDT	Special Weather Statement	BMX	Clay	53 min
Jul 4, 5:39 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	51 min
Jul 4, 5:52 PM CDT	Special Weather Statement	BMX	Coosa	38 min
Jul 4, 5:57 PM CDT	Severe Thunderstorm Warning	BMX	Marion, Walker, Winston	39 min
Jul 4, 6:20 PM CDT	Special Weather Statement	BMX	Fayette	25 min
Jul 4, 6:40 PM CDT	Special Weather Statement	BMX	Fayette, Walker	50 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; radar from the NEXRAD Level II archive.