textproduct: NWS Birmingham

KEY MESSAGES

Issued at 108 PM CDT TUE JUN 9 2026

- Heat indices will warm each day, and reach triple digits in many locations by mid to end of the work week, and into the beginning of the weekend.

- High temperatures will climb by the middle of this week, reaching the lower 90s in many locations by today.

- Isolated to scattered showers and thunderstorms are possible each day, increasing in coverage by Saturday and Sunday.

DISCUSSION

(This afternoon through Monday) Issued at 108 PM CDT TUE JUN 9 2026

High pressure begins to develop across the southeastern US, with low level winds in southern Georgia from the east, and winds over Alabama from the south. This is creating a convergence zone in the south and eastern parts of the state, allowing convection to develop through the afternoon, and should last through the evening. The wind profile is weak and chaotic, with meager instability. With low level winds from the east in the far southeastern parts of the state, moisture isn't quite as rich as if winds were from the south. With the winds as they are, could expect scattered showers and thunderstorms to be slow moving and produce decent rainfall. Any storm that can tap into enough instability to become strong could produce damaging winds as it weakens and/or collapses. Otherwise, no severe weather is expected, and flooding impacts should be limited to any urban areas that have training storms.

By Wednesday, the high pressure will build east over the southeast US, causing weak winds at the surface. Low to mid level flow will be from the south and east. Moisture advection will remain fairly high, with isolated to scattered convection each afternoon. Thursday and Friday should look similar to Wednesday as the high continues and a low pressure begins to develop and move to the east through the plains.

The high temperature through the end of the work week and beginning of the weekend will easily move into the 90s. With the amount of moisture that will be advected into the area with this southerly flow, heat indices will reach the upper 90s, and by Thursday, near or at triple digits for a few areas. By Friday and Saturday, many locations could reach heat indices a couple of degrees above 100. Right now, the values are not high enough to reach Advisory criteria, but heat stress will definitely be a concern each day. Low temperatures at night will be in the low to mid

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AVIATION

(18Z TAFS) Issued at 108 PM CDT TUE JUN 9 2026

Isolated to scattered convection will continue across eastern AL through the afternoon and early evening. Coverage is expected to be higher at KAUO, with less coverage at KMGM. Due to uncertainty in exact timing and location of any activity over these two TAF sites, have left only TEMPO and PROB30 for now. Isolated showers may move close to KBHM and KEET through the afternoon, but confidence was too low to include in TAF for now. Activity should weaken by late evening, with fair winds through the night and Wednesday morning.

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FIRE WEATHER

Elevated chances for showers and thunderstorms are expected for much of this week. Because of that, MinRH values will remain above 45% or higher into next weekend. Given daily rain chances and high MinRH values, fire weather concerns remain low at this time.

PRELIMINARY POINT TEMPS/POPS

Gadsden 70 90 71 91 / 10 20 20 30 Anniston 70 89 72 90 / 20 20 20 30 Birmingham 72 91 73 92 / 10 10 10 10 Tuscaloosa 73 92 74 93 / 10 0 0 0 Calera 71 93 72 94 / 10 10 10 10 Auburn 70 91 73 92 / 20 10 10 20 Montgomery 72 92 74 93 / 10 10 10 10 Troy 70 92 72 93 / 20 10 10 10

BMX WATCHES/WARNINGS/ADVISORIES

None.