Alert archive / Alabama / Special Weather Statements in 2016

Special Weather Statement, NWS Birmingham, AL

July 14, 20164 counties in Alabama

NWS Birmingham, AL issued this special weather statement at Jul 14, 2016, 5:47 PM CDT for 4 counties in 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 14, 2016, 5:47 PM CDT (22:47 UTC)
Expired
Jul 14, 2016, 6:15 PM CDT
In force
28 min
Issued by
NWS Birmingham, AL

Counties Calhoun County, AL, Clay County, AL, Cleburne County, AL, Talladega County, AL

The radar

The Birmingham radar (KBMX), 76 km from the middle of the area, began a volume at 22:49 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, 10.8 hours before the alert went out and 77 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-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2016-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 424 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2016-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
424 J/kg
Mixed-layer CIN
-151 J/kg
Mixed-layer LCL
874 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
55 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 14, 3:32 PM CDT, 2 hours 15 minutes earlier.

Area forecast discussion, Jul 14, 3:32 PM CDT, 2 hours 15 minutes before
Area Forecast Discussion
National Weather Service Birmingham AL
332 PM CDT THU JUL 14 2016

.SHORT TERM...
Tonight through Friday night.

Two areas of concern for the short term. The first being our large
area of showers and thunderstorms that has been moving eastward
across Tennessee and across the northern portions of Alabama where
some strong winds, lots of lightning, heavy rain, and at times
marginal hail have been noted. A second area of more scattered
showers and thunderstorms exists across the south and west
central portions of the state being enhanced by a broad upper low
pressure system across the gulf coast. Think that this activity
should decrease as we lose daytime heating, but models are
indicating another possible convective system may move across the
northern portions of the area, but with some uncertainty, have
kept some pops in late and done a slow ramp back up of pops
before daybreak on Friday. Will reserve the higher pops for during
the day on Friday as a surface low pressure system moves out of
the Texas Panhandle and across Oklahoma/Arkansas and is expected
to drag a front closer to Alabama on during the day Friday with
with lots of available moisture available ahead of it.

08

.LONG TERM...
Saturday through Wednesday.

Weak mid/upper troughing will persist on Saturday and will lead to
enhanced rain chances for the area. By Sunday, the upper ridge to
our west begins to strengthen over the Central Plains and heights
start to increase in our neck of the woods, especially into Monday.
Rain chances will return to climatological norms with the best
chances in the E/SE along the eastern periphery of the ridge.
Convection will primarily be diurnally driven during this time. As
we look into the extended, models try to bring a frontal boundary
southward into the forecast area in the Tue/Wed time frame.
Scattered convection, at least, can be expected both days, and a few
showers/storms may linger into the overnight period with the front
still in the vicinity.

Temperatures will remain just above normal thru the period, with
highs in the low/mid 90s. With dew points remaining in the 70s, heat
index values could approach or exceed 105 degrees early next week.

19

&&

.AVIATION...
18Z TAF Discussion.

Two areas of concern this afternoon. The first is from a line of
TSTM approaching from the northwest, with outflow boundaries,
downburst winds, some large hail, and heavy rain at times with the
stronger cells possible especially across the northwest sections of
the state. Will be monitoring these storms as they progress
southeast today. Our second area of concern will just be for
activity developing during the afternoon and moving up from the
south. Have tried to time these threats appropriately in the TAFs.
We should have a lull in the late evening and possible some
development or another complex late bringing more activity. There
is some uncertainty for this late night complex and have not
mentioned VCTS again until Friday morning when better chances are
expected.

08

&&

.FIRE WEATHER...

Periods of showers and thunderstorms will continue off and on
through the next week, with the highest chances mainly now through
late Friday. No critical fire weather concerns with humid
conditions persisting.

&&

.PRELIMINARY POINT TEMPS/POPS...
Gadsden     72  89  70  89  71 /  40  70  60  50  30
Anniston    72  89  71  88  71 /  40  60  60  50  30
Birmingham  75  89  73  89  74 /  40  70  60  50  30
Tuscaloosa  74  90  73  90  73 /  50  70  60  50  20
Calera      73  89  73  89  73 /  40  60  60  50  30
Auburn      74  89  73  90  73 /  40  60  60  50  30
Montgomery  74  93  74  92  74 /  40  60  60  50  30
Troy        73  90  72  91  72 /  40  60  50  50  30

&&

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

&&

08/19
Hazardous weather outlook, Jul 14, 5:10 PM CDT, 37 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
510 PM CDT THU JUL 14 2016

ALZ011>015-017>050-160115-
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-
510 PM CDT THU JUL 14 2016

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

.DAY ONE...OUTLOOK THROUGH TONIGHT.

ISOLATED SEVERE STORMS ARE POSSIBLE ACROSS NORTHEAST CENTRAL
ALABAMA THROUGH 8 PM. THE MAIN THREATS WILL BE DAMAGING WIND
GUSTS UP TO 60 MPH, LARGE HAIL, AND AREAS OF LOCALLY HEAVY
RAINFALL THAT COULD LEAD TO MINOR FLOODING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

DAYTIME TEMPERATURES ARE FORECAST TO CLIMB INTO THE MIDDLE TO
UPPER 90S EARLY NEXT WEEK AS A STRONG HIGH PRESSURE SYSTEM MOVES
CLOSER TO ALABAMA. HEAT INDICES COULD REACH 105 DEGREES OR HIGHER
EARLY NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT MAY BE
NECESSARY THIS EVENING.

In the hours before

Special weather statement, Jul 14, 5:09 PM CDT, 38 minutes before
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Local storm report, Jul 14, 5:15 PM CDT, 32 minutes before
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Local storm report, Jul 14, 5:29 PM CDT, 18 minutes before
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Special weather statement, Jul 14, 5:34 PM CDT, 13 minutes before
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Special weather statement, Jul 14, 5:43 PM CDT, 4 minutes before
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Special weather statement, Jul 14, 5:47 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 1:01 PM CDTSpecial Weather StatementBMXMarion59 min
Jul 14, 1:06 PM CDTSpecial Weather StatementBMXWinston24 min
Jul 14, 1:18 PM CDTSpecial Weather StatementBMXMarengo42 min
Jul 14, 1:19 PM CDTSpecial Weather StatementBMXMarengo41 min
Jul 14, 1:29 PM CDTSpecial Weather StatementBMXMarion61 min
Jul 14, 1:48 PM CDTSpecial Weather StatementBMXLamar57 min
Jul 14, 1:59 PM CDTSpecial Weather StatementBMXWinston61 min
Jul 14, 2:11 PM CDTSpecial Weather StatementBMXMarion49 min
Jul 14, 2:39 PM CDTSpecial Weather StatementBMXChilton51 min
Jul 14, 2:45 PM CDTSpecial Weather StatementBMXWalker30 min
Jul 14, 2:49 PM CDTSpecial Weather StatementBMXWalker41 min
Jul 14, 3:08 PM CDTSevere Thunderstorm WarningBMXWalker25 min
Jul 14, 3:20 PM CDTSpecial Weather StatementBMXBlount55 min
Jul 14, 3:27 PM CDTSpecial Weather StatementBMXJefferson63 min
Jul 14, 3:32 PM CDTSpecial Weather StatementBMXWalker58 min
Jul 14, 3:35 PM CDTSpecial Weather StatementBMXJefferson25 min
Jul 14, 3:59 PM CDTSpecial Weather StatementBMXCoosa31 min
Jul 14, 4:08 PM CDTSpecial Weather StatementBMXJefferson37 min
Jul 14, 4:11 PM CDTSpecial Weather StatementBMXSt. Clair34 min
Jul 14, 4:19 PM CDTSpecial Weather StatementBMXBlount26 min
Jul 14, 4:28 PM CDTSevere Thunderstorm WarningBMXBlount, Jefferson, St. Clair32 min
Jul 14, 4:31 PM CDTSpecial Weather StatementBMXElmore29 min
Jul 14, 4:33 PM CDTSevere Thunderstorm WarningBMXJefferson27 min
Jul 14, 4:39 PM CDTSevere Thunderstorm WarningBMXShelby51 min
Jul 14, 4:55 PM CDTSpecial Weather StatementBMXCalhoun35 min
Jul 14, 4:58 PM CDTSpecial Weather StatementBMXSt. Clair32 min
Jul 14, 5:00 PM CDTSpecial Weather StatementBMXElmore30 min
Jul 14, 5:09 PM CDTSpecial Weather StatementBMXTalladega36 min
Jul 14, 5:34 PM CDTSpecial Weather StatementBMXPickens26 min
Jul 14, 5:43 PM CDTSpecial Weather StatementBMXLamar32 min
Jul 14, 5:56 PM CDTSpecial Weather StatementBMXFayette, Pickens49 min
Jul 14, 6:27 PM CDTSpecial Weather StatementBMXLamar, Marion48 min
Jul 14, 6:31 PM CDTAreal Flood WarningBMXCalhoun3 hr
Jul 14, 6:40 PM CDTSpecial Weather StatementBMXFayette, Pickens65 min

Nearby

Special Weather Statements in Alabama, 2016Every 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.