Severe Thunderstorm Warning 257, NWS Birmingham, AL

Area Forecast Discussion
National Weather Service Birmingham AL
1221 PM CDT Fri Aug 1 2025

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

.KEY MESSAGES...
Updated at 1216 PM CDT FRI AUG 1 2025

 - Continued hot and humid conditions, coupled with accumulated
   heat stress from prior days, will affect people and pets
   without adequate cooling and hydration through Friday evening.

-  There is a Marginal Risk (Level 1 out of 5) risk for severe
   storms both today and tomorrow. Damaging winds are the primary
   threat.

&&

.SHORT TERM...
(This evening through Saturday)
Issued at 1216 PM CDT FRI AUG 1 2025

Water vapor imagery this morning paints a fairly active upper level
pattern characterized by a trough swinging across the Great Lakes as
the ridge over the southeast begins to weaken. To our west, a stout
upper level ridge is beginning to take shape. At the surface, RAP
analysis depicts a weak cold front slowly moving south across the
state. The combination of upper level support, increased low level
moisture convergence, ample moisture, and diurnal heating will allow
scattered to numerous showers and thunderstorms both today and
tomorrow. The best chances will come to the south of the boundary
where convergence will be maximized. Forecast soundings reveal an
inverted-v profile indicative of damaging winds being the primary
threat. Without much shear, storms should be relatively short-
lived. SPC currently has a Marginal Risk (Level 1 out of 5) for
severe storms in place across the region both today and tomorrow.

Otherwise, today's Heat Advisory remains in effect through 7 PM this
evening. Heat indices will top out around 105-107F this afternoon
across the region. However, increased cloud cover from any storms
that develop may help keep things in check. The weakening ridge will
lead to slightly cooler highs, generally in the upper 80s, and
knock a few degrees off our heat indices, generally in the 95-100F
range.

95/Castillo

&&

.LONG TERM...
(Saturday night through next Thursday)
Issued at 1216 PM CDT FRI AUG 1 2025

An unsettled pattern continues as upper level troughing remains in
place across the eastern CONUS. This will lead to increased
diurnally driven chances for showers and storms. We will see an
uptick in activity early next week as a shortwave rides along the
eastern periphery of the ridge across the west. Forecast soundings
reveal a fully saturated profile and a deep warm cloud depth.
Therefore, periods of heavy rainfall are likely. WPC is already
highlighting early next week with a Marginal Risk of Excessive
Rainfall for our east and southeastern areas.

We will have a nice break from this week's relentless heat as we go
through the long term. With that said, it is still August so
highs will still be in the mid to upper 80s for most. There are
some signs that our eastern counties may see highs top out in the
mid 70s early next week as wedge flow develops. Recent
probabilistic guidance suggests a 50-75% chance of highs under 80F
along the AL/GA border.

95/Castillo

&&

.AVIATION...
(18Z TAFS)
Issued at 1216 PM CDT FRI AUG 1 2025

Showers and thunderstorms are beginning to develop near MGM/AUO
early this afternoon. Coverage is expected to increase slightly over
the next several hours. Continued with the PROB30s to cover the
convection this afternoon and evening. Will amend if coverage
becomes greater than expected. VFR conditions are expected outside
of any showers and storms. Another round of MVFR/IFR ceilings are
expected early Saturday morning with VFR returning by mid morning.

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     70  87  68  81 /  30  70  50  70
Anniston    72  86  69  80 /  30  80  60  70
Birmingham  73  88  71  81 /  30  70  40  70
Tuscaloosa  73  89  73  86 /  30  60  30  60
Calera      73  88  71  83 /  30  80  50  70
Auburn      74  86  71  80 /  50  90  70  80
Montgomery  75  90  72  85 /  50  90  60  80
Troy        73  90  71  84 /  50  90  70  90

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 7 PM CDT this evening for the following
counties: Autauga-Barbour-Bibb-Bullock-Chilton-Coosa-Dallas-
Elmore-Fayette-Greene-Hale-Jefferson-Lamar-Lowndes-Macon-Marengo-
Montgomery-Perry-Pickens-Pike-Russell-Shelby-St. Clair-Sumter-
Talladega-Tallapoosa-Tuscaloosa-Walker.

&&

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

Hazardous Weather Outlook
National Weather Service Birmingham AL
123 PM CDT Fri Aug 1 2025

ALZ011>015-017>050-022130-
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-
123 PM CDT Fri Aug 1 2025

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

.DAY ONE...Outlook through Tonight.

There is a Marginal Risk (Level 1 out of 5) risk for severe storms
through this evening. Main threat is damaging winds up to 60 MPH.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a Marginal Risk (Level 1 out of 5) risk for severe storms
across southeast Central Alabama Saturday afternoon and evening.
Main threat is damaging winds up to 60 MPH.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management through this
evening and again Saturday afternoon and evening.

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