Severe Thunderstorm Warning 256, NWS Birmingham, AL

Area Forecast Discussion
National Weather Service Birmingham AL
1249 PM CDT Thu Jul 31 2025

...New SHORT TERM, LONG TERM, AVIATION...

.KEY MESSAGES...
Updated at 1237 PM CDT THU JUL 31 2025

 - A Heat Advisory remains in effect through 9 pm this evening
   for all of central Alabama. Continued hot and humid conditions,
   coupled with accumulated heat stress from prior days, will
   affect people and pets without adequate cooling and hydration.

&&

.SHORT TERM...
(This evening through Friday)
Issued at 1237 PM CDT THU JUL 31 2025

Water vapor imagery this morning reveals upper level ridging across
the southeast beginning to weaken as a trough across the Plains
nudges east. A surface cold front can also be analyzed off to our
northwest. The arrival of this front and the weakening ridge will
bring a nice relief from this relentless heat across Central
Alabama. However, we will still have to deal with one more day as
the current Heat Advisory remains in effect through 9 PM this
evening. Heat indices are forecast to climb into the 105-109
range. At this time, we are not planning to extend the Advisory
into Friday as heat indices should remain in check. Some of the
latest ensemble probabilities hint at a low to medium (20-60%)
chance of apparent temps exceeding 105F tomorrow across southwest
portions of the CWA.

Chances for showers and storms will increase into the 40-60% range
this afternoon due to the combination of increase low level moisture
convergence (near the approaching boundary), a passing H7 vort max,
and convective temps likely being met. Chances for showers and
storms jump into the 50-70% range on Friday as the boundary stalls
across Central AL. Greatest chances will come for those in close
proximity to the boundary as low level forcing will be maximized. A
nearly fully saturated atmospheric profile will lead to periods of
heavy rain at times. Therefore, WPC has most of the CWA in a
Marginal Risk of Excessive Rainfall (level 1 of 4) both today and
tomorrow.

95/Castillo

&&

.LONG TERM...
(Friday night through next Wednesday)
Issued at 1237 PM CDT THU JUL 31 2025

An unsettled pattern continues as troughing remains in place across
the eastern CONUS. Best chances for convection over the weekend and
into next week will come during the afternoon and evening hours as
we reach peak heating. Temps look to cool off a bit late this
weekend with highs settling into the 80s for most. This will help
keep us below Heat Advisory criteria through the long term.

95/Castillo

&&

.AVIATION...
(18Z TAFS)
Issued at 1237 PM CDT THU JUL 31 2025

Low level clouds hung on a bit longer than expected this morning but
VFR is now prevailing. We are starting to see isolated thunderstorms
developing across the area. This activity has been fairly short
lived. Coverage is expected to increase through the afternoon. Due
to the isolated nature of the coverage, have continued with the
PROB30 groups. Latest CAMs weren't as excited about overnight
activity. However, we will need to monitor for any lingering
outflows that may activate a storm or two. Light winds overnight
will help promote patchy fog late tonight, especially for those that
receive rain today. Winds turn out of the north through the morning
as a weak boundary moves through.

95/Castillo

&&

.FIRE WEATHER...

No issues from fire weather elements are expected over the coming
days. Daily showers and thunderstorms are expected, most focused
on the afternoon to evening time frame. 20-foot winds will be
light, except variable and gusty in and near showers and
thunderstorms.

&&

.PRELIMINARY POINT TEMPS/POPS...
Gadsden     73  93  70  86 /  30  50  20  60
Anniston    73  92  72  86 /  30  60  30  70
Birmingham  74  92  73  89 /  30  60  20  60
Tuscaloosa  75  93  73  89 /  30  70  30  50
Calera      75  92  73  88 /  30  60  30  70
Auburn      75  91  73  86 /  30  60  40  90
Montgomery  76  94  74  89 /  30  70  40  80
Troy        74  93  73  89 /  30  70  40  90

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 9 PM CDT this evening for the following
counties: Autauga-Barbour-Bibb-Blount-Bullock-Calhoun-Chambers-
Cherokee-Chilton-Clay-Cleburne-Coosa-Dallas-Elmore-Etowah-
Fayette-Greene-Hale-Jefferson-Lamar-Lee-Lowndes-Macon-Marengo-
Marion-Montgomery-Perry-Pickens-Pike-Randolph-Russell-Shelby-St.
Clair-Sumter-Talladega-Tallapoosa-Tuscaloosa-Walker-Winston.

&&

SHORT TERM...95/Castillo
LONG TERM....95/Castillo
AVIATION...95/Castillo

Hazardous Weather Outlook
National Weather Service Birmingham AL
248 PM CDT Thu Jul 31 2025

ALZ011>015-017>050-012300-
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-
248 PM CDT Thu Jul 31 2025

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

.DAY ONE...Outlook through Tonight.

No hazardous weather is expected at this time.

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

There is a Marginal Risk (Level 1 of 5) for severe storms Saturday
afternoon and evening across southeast portions of Central Alabama.

.SPOTTER INFORMATION STATEMENT...

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

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