Alert archive / Alabama / Special Weather Statements in 2016

Special Weather Statement, NWS Birmingham, AL

July 31, 2016Chambers County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 31, 2016, 5:20 PM CDT for Chambers 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: Jul 31, 2016, 5:20 PM CDT (22:20 UTC)
Expired: Jul 31, 2016, 6:00 PM CDT
In force: 40 min
Issued by: NWS Birmingham, AL

County Chambers County, AL

The radar

The Maxwell AFB radar (KMXX), 62 km from the middle of the area, began a volume at 22:21 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.3 hours before the alert went out and 93 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: 303 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 1101 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Birmingham, AL wrote its last area forecast discussion before this special weather statement went out at Jul 31, 3:33 PM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, Jul 31, 3:33 PM CDT, 1 hour 47 minutes before

Area Forecast Discussion
National Weather Service Birmingham AL
333 PM CDT SUN JUL 31 2016

.DISCUSSION...

The large boundary discussed in yesterday's forecast wound up
stalling out in the southeastern counties, thus best rain chances
have been down there this afternoon. This has kept the convection
down for the most part this afternoon across the area. What
activity we do have has generated along weak, left-over boundaries
from yesterday. Most of the activity will weaken after 10 pm, but
will need to monitor storms even after sunset in the south.

As we work into the time frame Monday, there will likely be a
boundary across the south once again. We will also have another
spoke of energy slide into the area by the afternoon. This should
result in slightly higher rain chances in the afternoon as
compared to this current time frame.

Tuesday and Wednesday look more of the same with scattered showers
and storms possible each day and lingering into the evening hours.
Overall coverage looks a little less on these days than Monday, so
rain chances are closer to normal climate patterns. For the rest
of the week eyes will more than likely be focused on the tropics
as a system may develop and move through the southern portion of
the Gulf Mexico. We will need to monitor the overall path as this
current weakness over the Southeast remains in place. Again at
this time all models and indications will keep any system well
south of the area through the extended period, so much of the same
pattern will be in place through Friday.

16

&&

.AVIATION...
18Z TAF Discussion.

Best chance of convection in the near term will be at ANB/ASN due
to an outflow boundary and MCV approaching from the west, so a
TEMPO TSRA mention has been added. Will continue with VCTS
elsewhere but amendments will be likely. Activity will diminish
this evening. Patchy BR or fog will be possible tomorrow morning,
mainly in areas which receive rainfall, which will become more
apparent at the next TAF issuance.

32/Davis

&&

.FIRE WEATHER...

Generally scattered showers and thunderstorms are expected through
the week with highs low/mid 90s. Surface winds will be less than
10 mph and generally from the southwest/west through the first of
the week. Since surface dew points are so high, critical fire
weather thresholds are not expected to be met, with no watches or
warnings anticipated.

&&

.PRELIMINARY POINT TEMPS/POPS...
Gadsden     72  92  71  93  72 /  40  50  40  30  20
Anniston    73  92  71  93  72 /  40  50  50  30  20
Birmingham  75  92  73  92  74 /  40  50  50  30  20
Tuscaloosa  74  93  74  94  74 /  30  50  50  40  20
Calera      74  93  73  93  73 /  40  50  50  40  20
Auburn      74  91  73  93  73 /  40  60  50  40  30
Montgomery  75  94  74  94  74 /  30  60  50  40  30
Troy        73  94  72  92  72 /  50  60  60  40  30

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
None.

&&

Hazardous weather outlook, Jul 31, 8:53 AM CDT, 8 hours 27 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
853 AM CDT SUN JUL 31 2016

ALZ011>015-017>050-011700-
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-
853 AM CDT SUN JUL 31 2016

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

.DAY ONE...OUTLOOK THROUGH TONIGHT.

TEMPERATURES IN THE MID TO UPPER 90S COMBINED WITH MOIST
CONDITIONS IN PLACE, MAY LEAD TO HIGHER HEAT INDEX VALUES THIS
AFTERNOON. A FEW LOCATIONS MAY REACH 105 AT TIMES GENERALLY ALONG
AND SOUTH OF A LINE FROM CARROLLTON TO TUSKEGEE. CONFIDENCE
REMAINS LOW AT THIS TIME, BASED ON EXPECTED SHOWER AND
THUNDERSTORM COVERAGE THIS AFTERNOON ACROSS THE SOUTH.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT IS NOT
EXPECTED.

In the hours before

Special weather statement, Jul 31, 3:40 PM CDT, 1 hour 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
340 PM CDT SUN JUL 31 2016

ALZ050-312130-
BARBOUR AL-
340 PM CDT SUN JUL 31 2016

...SIGNIFICANT WEATHER ADVISORY FOR BARBOUR COUNTY UNTIL 430 PM
CDT...

AT 340 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
TEXASVILLE...OR 8 MILES EAST OF CLIO...MOVING SOUTHEAST AT 15 MPH.

PEA SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
EUFAULA...CLIO...CLAYTON...LOUISVILLE...GAINO...TEXASVILLE...
WHITE OAK...BOOT HILL...RICHARDS CROSSROADS...OSCO...DOSTER...
BARBOUR COUNTY PUBLIC LAKE DAM...BLUE SPRINGS STATE PARK...
TYLER CROSSROADS...CLAYTON MUNICIPAL AIRPORT...MOUNT ANDREW...
MILLERS FORD AND BAKER HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3165 8572 3174 8570 3177 8567 3184 8567
      3189 8566 3196 8561 3200 8559 3200 8556
      3192 8511 3190 8511 3189 8513 3183 8514
      3180 8513 3177 8515 3174 8521 3170 8522
      3171 8541 3162 8542 3162 8574
TIME...MOT...LOC 2040Z 302DEG 12KT 3176 8547

32/DAVIS

Special weather statement, Jul 31, 4:15 PM CDT, 1 hour 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
415 PM CDT SUN JUL 31 2016

ALZ047-048-312145-
RUSSELL AL-LEE AL-
415 PM CDT SUN JUL 31 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN RUSSELL AND SOUTH
CENTRAL LEE COUNTIES UNTIL 445 PM CDT...

AT 415 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
SOCIETY HILL...OR 12 MILES NORTH OF HURTSBORO. THIS STORM WAS NEARLY
STATIONARY.

PEA SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
UCHEE AND MARVYN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3237 8516 3226 8543 3233 8544 3239 8543
      3246 8544 3252 8530
TIME...MOT...LOC 2115Z 334DEG 2KT 3242 8537

56

Special weather statement, Jul 31, 4:18 PM CDT, 1 hour 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
418 PM CDT SUN JUL 31 2016

ALZ043-312145-
ELMORE AL-
418 PM CDT SUN JUL 31 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ELMORE COUNTY UNTIL
445 PM CDT...

AT 418 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
OVER WEOKA MILLS...OR 11 MILES NORTHWEST OF WETUMPKA. THIS STORM WAS
NEARLY STATIONARY.

PEA SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
TEN CEDAR ESTATES...SANTUCK...JORDAN LAKE...DEXTER...WEOKA MILLS...
TITUS...JORDAN DAM AND HOLTVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3257 8634 3272 8636 3275 8630 3275 8620
      3264 8607
TIME...MOT...LOC 2118Z 334DEG 2KT 3269 8628

56

Special weather statement, Jul 31, 4:57 PM CDT, 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
457 PM CDT SUN JUL 31 2016

ALZ045-312245-
MACON AL-
457 PM CDT SUN JUL 31 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MACON COUNTY UNTIL
545 PM CDT...

AT 457 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
LAKE TUSKEGEE...OR 8 MILES EAST OF TUSKEGEE. THIS STORM WAS NEARLY
STATIONARY.

PEA SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
TUSKEGEE...SOCIETY HILL...DAVISVILLE...LAKE TUSKEGEE...
CREEK STAND AND WARRIORSTAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3223 8564 3223 8567 3224 8567 3243 8568
      3251 8551 3242 8543 3231 8543
TIME...MOT...LOC 2157Z 334DEG 2KT 3239 8557

56

Special weather statement, Jul 31, 5:10 PM CDT, 10 minutes before

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Special weather statement, Jul 31, 5:20 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 31, 1:12 PM CDT	Special Weather Statement	BMX	Shelby	33 min
Jul 31, 2:39 PM CDT	Special Weather Statement	BMX	Lowndes	36 min
Jul 31, 2:48 PM CDT	Areal Flood Advisory	BMX	St. Clair, Talladega	117 min
Jul 31, 3:06 PM CDT	Special Weather Statement	BMX	Russell	24 min
Jul 31, 3:07 PM CDT	Special Weather Statement	BMX	Lee	23 min
Jul 31, 3:25 PM CDT	Special Weather Statement	BMX	Dale	35 min
Jul 31, 3:28 PM CDT	Special Weather Statement	BMX	Russell	32 min
Jul 31, 3:34 PM CDT	Special Weather Statement	BMX	Shelby	26 min
Jul 31, 3:38 PM CDT	Special Weather Statement	BMX	Autauga	52 min
Jul 31, 3:40 PM CDT	Special Weather Statement	BMX	Barbour	50 min
Jul 31, 4:10 PM CDT	Areal Flood Advisory	BMX	Barbour	3 hr
Jul 31, 4:15 PM CDT	Special Weather Statement	BMX	Russell	30 min
Jul 31, 4:18 PM CDT	Special Weather Statement	BMX	Elmore	27 min
Jul 31, 4:31 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Bullock, Pike	20 min
Jul 31, 4:57 PM CDT	Special Weather Statement	BMX	Macon	48 min
Jul 31, 4:59 PM CDT	Severe Thunderstorm Warning	BMX	Macon	24 min
Jul 31, 5:10 PM CDT	Special Weather Statement	BMX	Tallapoosa	50 min
Jul 31, 5:22 PM CDT	Special Weather Statement	BMX	Macon	38 min
Jul 31, 5:32 PM CDT	Areal Flood Advisory	BMX	Lee, Macon, Russell	3 hr
Jul 31, 6:00 PM CDT	Special Weather Statement	BMX	Bullock	45 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.