textproduct: NWS Birmingham

KEY MESSAGES

Issued at 1038 PM CDT MON JUL 27 2026

- Heat: A major heat risk is expected Tuesday across most of the region, with heat indices approaching 110 degrees.

- Severe Weather: There is a Marginal Risk for Severe Thunderstorms across the far northeastern portions of Central Alabama on Tuesday and across our southeastern areas on Wednesday. The main threats are damaging straight-line winds and large hail.

DISCUSSION

(Tuesday through next Monday) Issued at 1038 PM CDT MON JUL 27 2026

Water vapor imagery this evening reveals a strengthening upper level ridge across the Four Corners region and an upper trough pushing through the Great Lakes region. Several shortwaves will rotate around the periphery of the high, which will keep low to medium chances for showers and storms in the forecast. Tuesday's activity looks to remain east of the region as the ridge shifts slightly east across the Southern Plains. By mid-week, the ridge begins to retreat south and west as the trough along the East Coast deepens and pushes a front through the region. This will allow the aforementioned shortwaves to inch closer to the region, bringing better chances for showers and storms, generally to the south of the front, through Thursday. Another upper trough cuts across the Plains into the Ohio Valley over the weekend. This will send a front our way, leading to increased rain chances over the weekend.

The main story over the next couple of days will be our increasing heat risk. Temps in the upper 90s along with muggy conditions will warrant a major heat risk across most of the region Tuesday with heat indices approaching 110 degrees. The latest ECMWF EFI hints at an unusually warm day tomorrow, especially across the southern half of the CWA. Highs tomorrow will be about 10 degrees warmer than usual for this time of the year. As a result, the Heat Advisory remains in effect through Tuesday evening. We will knock off a couple of degrees by mid week as the ridge retreats back west. High temps look to settle into the upper 80s to low 90s by Friday.

95/Castillo

AVIATION

(00Z TAFS) Issued at 624 PM CDT MON JUL 27 2026

VFR conditions and light winds are in place across all terminals early this evening. There is a low chance for patchy fog closer to sunrise, especially for those that received rain this morning. Any fog that develops will clear out by 13-14Z. VFR conditions then continue for the remainder of this TAF cycle. Winds gradually increase out of the west through the afternoon, generally 7-10 knots.

Note: AMD NOT SKED for KAUO due to a weather observation outage.

95/Castillo

FIRE WEATHER

A warm and humid air mass will help fire weather concerns in check for the week. MinRH values are expected to remain above 50 percent through Wednesday. Some drier air begins to work in from the east on Thursday and Friday with RHs dropping to around 40%. However, winds will be light enough to negate any fire weather concerns.

PRELIMINARY POINT TEMPS/POPS

Gadsden 74 96 75 91 / 0 0 10 30 Anniston 74 95 75 90 / 0 0 10 30 Birmingham 76 98 77 92 / 0 0 0 30 Tuscaloosa 77 99 78 94 / 0 0 0 30 Calera 75 100 77 95 / 0 0 0 30 Auburn 75 95 78 92 / 0 0 0 30 Montgomery 75 99 78 96 / 10 0 0 30 Troy 74 97 77 96 / 10 0 0 30

BMX WATCHES/WARNINGS/ADVISORIES

Heat Advisory until 9 PM CDT Tuesday for the following counties: Autauga-Bibb-Blount-Chilton-Dallas-Elmore-Fayette-Greene-Hale- Jefferson-Lamar-Lowndes-Marengo-Marion-Montgomery-Perry-Pickens- Shelby-Sumter-Tuscaloosa-Walker-Winston.

Heat Advisory from 10 AM to 9 PM CDT Tuesday for the following counties: Barbour-Bullock-Calhoun-Chambers-Cherokee-Clay- Cleburne-Coosa-Etowah-Lee-Macon-Pike-Randolph-Russell-St. Clair- Talladega-Tallapoosa.