What the forecast actually says
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Area Forecast Discussions are the real forecasts, written 3 to 4 times daily by NWS meteorologists reading the models and interpreting what they mean for your area. They offer far deeper insight than any weather app, but they're written in dense meteorological shorthand. Plaincast uses Anthropic's Claude to summarize them into plain English, side by side with the annotated original.
Revised in 4 passages since the 3:24 PM discussion. See every revision.
Scattered thunderstorms will be possible each day this week posing a threat for gusty winds and locally heavy rainfall.
A Heat Advisory is in effect for portions of central and east Georgia for Thursday afternoon.
Impactful heat is becoming increasingly likely as heat indices climb into the 100s during the late week and into the weekend.
(This evening through Thursday) Issued at 319 PM EDT Wed Aug 12 2026
Current radar loop shows scattered showers and thunderstorms developing across mainly central and west GA this afternoon as there is a weak wedge of high pressure across NE GA. Like the past few days we are mainly expecting these storms to stay below severe thresholds but can not rule out an isolated severe storm or two popping up. This northwest flow is expected to continue over the next few days with a few waves moving getting caught in the flow and moving across the area. precipitable water are currently in the 2"-2.2" range with MU Cape around 1500 to 2500 J/Kg and LIs in the -5 to -7 deg range. Not much sheer available so looks like the greatest convective threats are periods of heavy rain, frequent lightning strikes, small hail, and strong gusty winds.
temperatures will increase a bit Thu from today allowing portions of East and Central GA to meet Heat Advisory criteria. Have issued the
(Friday morning through next Tuesday) Issued at 319 PM EDT Wed Aug 12 2026
As the long term period begins on Friday morning, the axis of an upper level ridge will be centered roughly along the Mississippi River Valley. This ridge will gradually shift eastward and amplify over the course of the day on Friday and into Saturday. Temperatures will continue their steady climb underneath the ridge, with afternoon highs on Friday forecast to be in the upper 90s in areas south of I-85 and in the mid 90s to the north (excluding the far northeast mountains). Deep moisture lingering across the area will contribute to dewpoints in the low to mid 70s and precipitable water values between 1.8-2.2 inches. This combination of heat and humidity will contribute to heat index values in the triple digits across the majority of the area, with values between 105 and 109 in portions of central and east Georgia, which will warrant the issuance of another Heat Advisory for Friday afternoon. High temperatures will be a couple of degrees warmer areawide on Saturday, which could bring heat indices across the majority of the forecast area above Heat Advisory criteria and allow locations in east-central Georgia to flirt with heat indices of 110 degrees.
Mid-range model guidance continues to indicate that the ridge will help suppress precipitation chances through the weekend. However, it should be noted that these models tend to overestimate the effects of mixing under the ridge in the summer with deep moisture also present under the ridge, while underestimating the persistent northwesterly flow on the periphery of the ridge and how it can favor MCS development and growth. Thus, at least isolated thunderstorms will be possible each afternoon and evening considering both the possibility of an active daily convective pattern amid rising temperatures and the possibility of MCS development. Stronger storms that develop could produce gusty winds and locally heavy rainfall. On the flip side, showers and storms that occur could provide some relief from the heat and prevent the highest heat indices from being reached.
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