Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

July 17, 2012Chilton County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 17, 2012, 3:47 PM CDT for Chilton County, Alabama. It was in force for 28 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 17, 2012, 3:47 PM CDT (20:47 UTC)
Expired: Jul 17, 2012, 4:15 PM CDT
In force: 28 min
Issued by: NWS Birmingham, AL

County Chilton County, AL

The radar

The Birmingham radar (KBMX), 48 km from the middle of the area, began a volume at 20:47 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, 8.8 hours before the alert went out and 48 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: 1502 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1108 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 35 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 Birmingham, AL wrote its last area forecast discussion before this special weather statement went out at Jul 17, 3:04 PM CDT, 43 minutes earlier.

Area forecast discussion, Jul 17, 3:04 PM CDT, 43 minutes before

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Hazardous weather outlook, Jul 17, 12:37 PM CDT, 3 hours 10 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1237 PM CDT TUE JUL 17 2012

ALZ011>015-017>050-181745-
MARION-LAMAR-FAYETTE-WINSTON-WALKER-BLOUNT-ETOWAH-CALHOUN-CHEROKEE-
CLEBURNE-PICKENS-TUSCALOOSA-JEFFERSON-SHELBY-ST. CLAIR-TALLADEGA-
CLAY-RANDOLPH-SUMTER-GREENE-HALE-PERRY-BIBB-CHILTON-COOSA-TALLAPOOSA-
CHAMBERS-MARENGO-DALLAS-AUTAUGA-LOWNDES-ELMORE-MONTGOMERY-MACON-
BULLOCK-LEE-RUSSELL-PIKE-BARBOUR-
1237 PM CDT TUE JUL 17 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

ISOLATED SEVERE THUNDERSTORMS...WITH WIND GUSTS GREATER THAN 60
MPH...ARE POSSIBLE FROM NOON THROUGH 9 PM TODAY AREAWIDE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, Jul 17, 2:50 PM CDT, 57 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
250 PM CDT TUE JUL 17 2012

ALZ028-029-172015-
CLAY AL-RANDOLPH AL-
250 PM CDT TUE JUL 17 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN RANDOLPH AND
SOUTHEASTERN CLAY COUNTIES UNTIL 315 PM CDT...

AT 246 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR LAKE WEDOWEE...MOVING SOUTH AT 5 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  MELLOW VALLEY...
  MOTLEY...

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

IN ADDITION...THIS STORM 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 3311 8559 3310 8559 3310 8569 3311 8581
      3311 8582 3329 8578 3329 8560 3311 8557
TIME...MOT...LOC 1950Z 004DEG 3KT 3325 8569

77/GLEASON

Special weather statement, Jul 17, 2:59 PM CDT, 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
259 PM CDT TUE JUL 17 2012

ALZ044-049-172030-
MONTGOMERY AL-PIKE AL-
259 PM CDT TUE JUL 17 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PIKE AND
SOUTHEASTERN MONTGOMERY COUNTIES UNTIL 330 PM CDT...

AT 300 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR MEADVILLE...MOVING SOUTHEAST AT 10 MPH.

WIND GUSTS UP TO 45 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  MEADVILLE...
  RAMER...
  DUBLIN...
  GRADY...
  CURRYS...

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3193 8618 3194 8619 3196 8619 3196 8625
      3210 8632 3217 8615 3196 8596 3186 8619
TIME...MOT...LOC 1959Z 334DEG 10KT 3208 8619

Special weather statement, Jul 17, 3:03 PM CDT, 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
303 PM CDT TUE JUL 17 2012

ALZ043-045-172030-
ELMORE AL-MACON AL-
303 PM CDT TUE JUL 17 2012

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN MACON AND CENTRAL ELMORE
COUNTIES UNTIL 330 PM CDT...

AT 303 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM DEXTER TO ECLECTIC...AND
MOVING SOUTH AT 15 MPH.

PEA SIZE HAIL AND 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...
  WETUMPKA...
  SANTUCK...
  DEXTER...
  EMERALD MOUNTAIN...
  TYSONVILLE...

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 3228 8592 3230 8595 3234 8597 3234 8599
      3242 8603 3240 8605 3242 8608 3242 8612
      3247 8623 3250 8625 3275 8623 3275 8597
      3274 8594
TIME...MOT...LOC 2003Z 354DEG 13KT 3269 8615 3258 8602

77/GLEASON

Local storm report, Jul 17, 3:23 PM CDT, 24 minutes before

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Special weather statement, Jul 17, 3:42 PM CDT, 5 minutes before

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Special weather statement, Jul 17, 3:47 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 17, 1:08 PM CDT	Special Weather Statement	BMX	Elmore	37 min
Jul 17, 1:33 PM CDT	Special Weather Statement	BMX	Chilton	27 min
Jul 17, 2:04 PM CDT	Special Weather Statement	BMX	Elmore	26 min
Jul 17, 2:50 PM CDT	Special Weather Statement	BMX	Clay	25 min
Jul 17, 2:52 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Randolph	38 min
Jul 17, 2:59 PM CDT	Special Weather Statement	BMX	Montgomery	31 min
Jul 17, 3:03 PM CDT	Special Weather Statement	BMX	Elmore	27 min
Jul 17, 3:42 PM CDT	Special Weather Statement	BMX	Macon	33 min
Jul 17, 4:00 PM CDT	Special Weather Statement	BMX	Lowndes	30 min
Jul 17, 4:09 PM CDT	Areal Flood Advisory	BMX	Randolph	3 hr
Jul 17, 4:17 PM CDT	Special Weather Statement	BMX	Bullock	43 min
Jul 17, 4:32 PM CDT	Special Weather Statement	BMX	Dallas	43 min
Jul 17, 4:56 PM CDT	Special Weather Statement	BMX	Barbour	49 min
Jul 17, 5:04 PM CDT	Areal Flood Advisory	BMX	Barbour, Bullock, Pike	3 hr
Jul 17, 5:14 PM CDT	Special Weather Statement	BMX	Lee	31 min
Jul 17, 5:44 PM CDT	Special Weather Statement	BMX	Barbour	31 min
Jul 17, 6:52 PM CDT	Special Weather Statement	BMX	Dallas	38 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.