Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Birmingham, AL

July 6, 2017Talladega County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 6, 2017, 4:29 PM CDT for Talladega County, Alabama. It was in force for 61 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 6, 2017, 4:29 PM CDT (21:29 UTC)
Expired: Jul 6, 2017, 5:30 PM CDT
In force: 61 min
Issued by: NWS Birmingham, AL

County Talladega County, AL

The radar

The Birmingham radar (KBMX), 81 km from the middle of the area, began a volume at 21:30 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, 9.5 hours before the alert went out and 81 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: 1227 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 853 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -75 m²/s²
0-3 km storm-relative helicity: -79 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 6, 3:51 PM CDT, 38 minutes earlier.

Area forecast discussion, Jul 6, 3:51 PM CDT, 38 minutes before

Area Forecast Discussion
National Weather Service Birmingham AL
351 PM CDT Thu Jul 6 2017

.SHORT TERM...
Through Tonight.

Seeing another round of showers and storms this afternoon ahead of
the approaching upper level trough. Although coverage has been
less today than previous days, the potential for strong to severe
storms remains. This activity will diminish with sunset this
evening, but as the trough axis moves into the Tennessee Valley
overnight, isolated to scattered activity will be possible across
the north, especially after midnight.

14

.LONG TERM...
Friday through Thursday.

The main trough axis pushes through Central AL on Friday and the
weak frontal boundary stalls over the South-Central portions of the
state. Even though the the boundary is fairly weak, expect enough
lift during peak heating to drive afternoon thunderstorms. For now,
coverage could be more scattered, so have 40-50% PoPs in the
forecast each afternoon. As we have seen the past few days, any of
these scattered storms can develop a fairly intense core and
generate gusty winds 35-45 mph. While this is below severe limits,
similar winds have been causing downed trees due to the saturated
grounds. For now, have left our mention of any severe in the HWO for
Friday, but will need to re-evaluate any microburst potential once
we see how the convection pans out for today.

Another embedded wave moves southward through the larger-scale
trough over the Ohio River Valley on Saturday. This will push
another weak frontal boundary into Central AL, leading to enhanced
lift during the afternoon hours. Therefore, have included 40 PoPs
area-wide. By Sunday, the best chances of rain/storms will be
confined to the southern half of Central AL as the stalled boundary
remains in Southern AL.

The troughing over the Northeastern US begins to flatten and push
northward Tuesday into Wednesday, giving way to low-level ridging
over the Southeastern US. Expect typical diurnal temp and
precipitation trends Wednesday and Thursday with highs near 90 and
scattered afternoon thunderstorms.

25/Owen

&&

.AVIATION...
18Z TAF Discussion.

Scattered showers and storms will continue to develop this
afternoon, with the main focus across northern terminals, as near
and north of the I-20 corridor remains the best area for
development. Based on current radar trends and near term guidance,
have adjusted prevailing and tempo wording through early evening.

Regarding fog and low cloud potential overnight, went with a
persistence forecast given very little change in setup. Will leave
out any reductions in vis and cig for now.

14

&&

.FIRE WEATHER...

Isolated to scattered showers and storms will be possible across the
northern two thirds Central Alabama through tonight. Somewhat
better rain chances will move in Friday for the south as an upper
level disturbance slides through. There are no fire weather
concerns due to summertime humidity.

&&

.PRELIMINARY POINT TEMPS/POPS...
Gadsden     71  87  71  88  69 /  40  40  20  40  30
Anniston    72  87  72  88  70 /  40  50  20  40  30
Birmingham  74  88  74  89  72 /  40  50  20  40  30
Tuscaloosa  74  88  73  90  72 /  40  50  20  40  30
Calera      74  87  73  89  72 /  30  50  20  40  30
Auburn      73  87  72  88  72 /  20  50  20  40  40
Montgomery  75  90  75  91  74 /  20  50  20  40  40
Troy        73  88  72  89  71 /  20  50  20  40  40

&&

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

&&

Hazardous weather outlook, Jul 6, 4:12 AM CDT, 12 hours 17 minutes before

Hazardous Weather Outlook
National Weather Service Birmingham AL
412 AM CDT Thu Jul 6 2017

ALZ011>015-017>050-071215-
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-
412 AM CDT Thu Jul 6 2017

This Hazardous Weather Outlook is for the counties served by the
National Weather Service office in Birmingham.

.DAY ONE...Today and Tonight.

Isolated thunderstorms across the northern half of Central Alabama
may result in straight line wind damage with up to 60 mph this
afternoon. Areas that may see the activity will be along and north of
a Tuscaloosa, to Calera, to Wedowee Line.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management may be needed
this afternoon.

In the hours before

Special weather statement, Jul 6, 2:49 PM CDT, 1 hour 40 minutes before

Special Weather Statement
National Weather Service Birmingham AL
249 PM CDT THU JUL 6 2017

ALZ023-024-062030-
Jefferson AL-Tuscaloosa AL-
249 PM CDT THU JUL 6 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN TUSCALOOSA AND
SOUTHWESTERN JEFFERSON COUNTIES UNTIL 330 PM CDT...

At 249 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Bull City to near Moundville. Movement was
east at 25 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Tuscaloosa, Bessemer, Northport, Hueytown, Holt, Lake View,
Brookwood, Coaling, Vance, North Johns, Bull City, McFarland Mall,
Tuscaloosa Amphitheater, Lake Wildwood, Mercedes Benz Of Alabama,
Tannehill Ironworks State Park, Abernant, Shelton State Community
College, Bryant Denny Stadium and University Mall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3305 8782 3345 8736 3340 8693 3325 8704
      3325 8708 3322 8710 3322 8712 3324 8712
      3323 8715 3319 8720 3313 8720 3313 8728
      3309 8731 3305 8732
TIME...MOT...LOC 1949Z 273DEG 21KT 3345 8729 3307 8767

87/GRANTHAM

Special weather statement, Jul 6, 3:21 PM CDT, 1 hour 8 minutes before

Special Weather Statement
National Weather Service Birmingham AL
321 PM CDT THU JUL 6 2017

ALZ020-062100-
Cherokee AL-
321 PM CDT THU JUL 6 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CHEROKEE COUNTY
UNTIL 400 PM CDT...

At 321 PM CDT, Doppler radar was tracking a strong thunderstorm near
Slackland, or near Centre, moving east at 10 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Centre, Tennala, Moshat and Coloma.

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 3411 8554 3399 8560 3406 8578 3410 8580
      3411 8580 3412 8579 3413 8580 3412 8581
      3415 8581
TIME...MOT...LOC 2021Z 284DEG 11KT 3411 8577

87/GRANTHAM

Special weather statement, Jul 6, 3:23 PM CDT, 1 hour 6 minutes before

Special Weather Statement
National Weather Service Birmingham AL
323 PM CDT THU JUL 6 2017

ALZ024-025-034-062115-
Bibb AL-Jefferson AL-Shelby AL-
323 PM CDT THU JUL 6 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SHELBY...NORTHERN
BIBB AND SOUTH CENTRAL JEFFERSON COUNTIES UNTIL 415 PM CDT...

At 323 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Alabama Adventure to Tannehill Ironworks State
Park to near Coaling. Movement was east at 30 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Hoover, Alabaster, Bessemer, Pelham, Helena, Calera, Chelsea,
Montevallo, Indian Springs Village, Vance, Woodstock, West Blocton,
Regions Park Or Hoover Met, American Village, Oak Mountain State
Park, Maylene, Oak Mountain Amphitheater, Riverchase, Patton Creek
and Ross Bridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3313 8728 3313 8720 3319 8720 3323 8715
      3324 8712 3322 8712 3322 8710 3325 8707
      3328 8707 3328 8709 3329 8709 3329 8712
      3340 8700 3338 8657 3322 8671 3307 8692
      3308 8731 3309 8731
TIME...MOT...LOC 2023Z 274DEG 24KT 3338 8699 3325 8710 3314 8738

87/GRANTHAM

Special weather statement, Jul 6, 3:28 PM CDT, 1 hour 1 minute before

Special Weather Statement
National Weather Service Birmingham AL
328 PM CDT THU JUL 6 2017

ALZ018-019-026-062115-
Calhoun AL-Etowah AL-St. Clair AL-
328 PM CDT THU JUL 6 2017

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CALHOUN...SOUTHEASTERN
ETOWAH AND NORTHEASTERN ST. CLAIR COUNTIES UNTIL 415 PM CDT...

At 328 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Gadsden to near Riverside. Movement was east at
25 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Gadsden, Anniston, Jacksonville, Rainbow City, Hokes Bluff, Fort
McClellan, Saks, Attalla, Glencoe, Weaver, Ragland, Ohatchee,
Alexandria, Jacksonville State University, Gadsden Mall, Blue
Mountain, Southside, Gadsden Steam Plant, Cobb City and Sulphur
Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3399 8574 3397 8574 3396 8565 3369 8580
      3369 8617 3370 8619 3369 8621 3369 8626
      3402 8609 3405 8577
TIME...MOT...LOC 2028Z 265DEG 22KT 3402 8603 3364 8624

87/GRANTHAM

Special weather statement, Jul 6, 4:09 PM CDT, 20 minutes before

Special Weather Statement
National Weather Service Birmingham AL
409 PM CDT THU JUL 6 2017

ALZ025-026-062145-
Shelby AL-St. Clair AL-
409 PM CDT THU JUL 6 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN SHELBY AND
SOUTHWESTERN ST. CLAIR COUNTIES UNTIL 445 PM CDT...

At 409 PM CDT, Doppler radar was tracking a strong thunderstorm over
Greystone, or near Leeds, moving east at 20 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Birmingham, Hoover, Pell City, Leeds, Moody, Vincent, Vandiver, Coosa
Island, Lake Purdy, Greystone, Meadowbrook, Sterrett, Camp Winnataska
and Shoal Creek.

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 3354 8628 3349 8629 3341 8634 3339 8638
      3338 8638 3342 8670 3347 8667 3347 8661
      3351 8657 3352 8654 3352 8652 3355 8652
      3355 8654 3357 8655 3357 8650
TIME...MOT...LOC 2109Z 280DEG 18KT 3346 8661

87/GRANTHAM

Special weather statement, Jul 6, 4:29 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Birmingham AL
429 PM CDT THU JUL 6 2017

ALZ026-027-062230-
Talladega AL-St. Clair AL-
429 PM CDT THU JUL 6 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN TALLADEGA AND
SOUTHEASTERN ST. CLAIR COUNTIES UNTIL 530 PM CDT...

At 428 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Pell City to near Vincent. Movement was
east at 35 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Oxford, Talladega, Pell City, Lincoln, Riverside, Vincent, Ragland,
Munford, Waldo, Alpine Bay Resort, Talladega Superspeedway, Talladega
Municipal Airport, Grant Town, Honda Manufacturing Of Alabama, Coosa
Island, Logan Martin Dam, Country Club Estates, Camp Mac, Jackson
Shoals and Ironaton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3352 8582 3350 8585 3350 8590 3340 8592
      3338 8594 3338 8598 3336 8598 3337 8635
      3339 8638 3366 8635 3372 8612 3370 8614
      3368 8614 3367 8605 3365 8603 3360 8602
      3360 8600 3359 8599 3358 8580 3354 8580
TIME...MOT...LOC 2128Z 264DEG 31KT 3361 8633 3342 8639

87/GRANTHAM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 12:15 PM CDT	Special Weather Statement	BMX	DeKalb	30 min
Jul 6, 2:18 PM CDT	Special Weather Statement	BMX	Jefferson	27 min
Jul 6, 2:48 PM CDT	Special Weather Statement	BMX	St. Clair	42 min
Jul 6, 2:49 PM CDT	Special Weather Statement	BMX	Tuscaloosa	41 min
Jul 6, 3:21 PM CDT	Special Weather Statement	BMX	Cherokee	39 min
Jul 6, 3:23 PM CDT	Special Weather Statement	BMX	Shelby	52 min
Jul 6, 3:28 PM CDT	Special Weather Statement	BMX	Calhoun	47 min
Jul 6, 3:43 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Etowah	47 min
Jul 6, 4:09 PM CDT	Special Weather Statement	BMX	Shelby	36 min
Jul 6, 4:21 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne	36 min
Jul 6, 4:32 PM CDT	Special Weather Statement	BMX	Walker	43 min
Jul 6, 4:37 PM CDT	Special Weather Statement	BMX	Fayette, Lamar	53 min
Jul 6, 4:47 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Talladega	58 min
Jul 6, 5:11 PM CDT	Areal Flood Advisory	BMX	Fayette, Lamar, Walker	3 hr
Jul 6, 5:11 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Walker	49 min
Jul 6, 5:23 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Clay, Cleburne	38 min
Jul 6, 5:47 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	43 min
Jul 6, 5:50 PM CDT	Special Weather Statement	BMX	Cleburne	40 min
Jul 6, 6:00 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Walker	27 min

Nearby

Special Weather Statements in Alabama, 2017 Every special weather statement in 2017

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.