We have one more day of Heat Advisory-level warmth on Tuesday before a front starts to usher in changes later in the day in the way of showers and thunderstorms. First, though, we start the day in the upper 70s to around 80° in the morning before highs head back into the mid-90s in the afternoon. Mid-70s dewpoints will yield heat indices around 110° for at least a couple hours. From there, showers and thunderstorms should develop in the afternoon, with more widespread coverage arriving late afternoon and evening as the front gets closer. A few storms could be on the strong to severe side with damaging wind gusts the main concern. Otherwise, heavy rain and frequent lightning are the other main concerns.

After what ended up being quite a hot weekend, we have a day or two more of advisory-level heat (maybe even warning-level heat in a few spots) before a front moves into the area and brings some more unsettled weather for a few days.

It’s going to be a rather hot weekend in our part of the Lowcountry as high pressure stacks up both at the surface and aloft. This will keep generally drier air aloft in place, but southerly flow at the surface will help keep dewpoints nice and juicy in the mid-70s. Ridging aloft will keep us limited to an isolated storm or two in the afternoons — perhaps a totally rain-free Sunday, even — and so there just won’t be much relief from the heat. Highs will top out in the mid-90s Saturday and the mid-to-upper 90s on Sunday. Heat indices will head between 105-110° on Saturday and could reach or exceed 110° on Sunday, which puts it into post-July 1 heat advisory territory. We won’t get much of a chance to really recover at night, either, as lows bottom out in the mid-70s on Saturday and the upper 70s on Sunday. We will likely not get below 80° this weekend at the beaches and in downtown, either. Suffice to say, if the outdoors are in your plans this weekend, make sure you’ve got access to plenty of hydration and can take breaks in the shade.

Standard August heat and humidity continues for Friday and the weekend, with some storms interspersed in as well. Friday could turn particularly active as a disturbance ripples through aloft and interacts with a nearby stalled front. We start the day in the upper 70s to around 80° before warming to the mid-90s in the afternoon. Mid-70s dewpoints will send heat indices into the 105-110° range once again. From there, we should see numerous thunderstorms begin to develop heading into the evening hours as the aforementioned disturbance approaches along with some seabreeze forcing. A few of these storms could be on the strong side with strong and even damaging wind gusts possible, so keep an ear out for possible Severe Thunderstorm Warnings and be ready to head indoors at a moment’s notice.

We’re back into a more typical summertime pattern over the weekend with highs in the mid-90s and lows in the mid-to-upper 70s each morning, especially on Sunday. Heat indices will once again prove to be an issue, with mid-70s dewpoints combining with the mid-90s heat to produce feels-like temperatures around 105-110° once again. Absent any large-scale features to help organize thunderstorms, we should see scattered storms Saturday afternoon generally along and ahead of the seabreeze, while a little less coverage looks possible on Sunday. Not everyone will see storms, but if you do, be ready to move outdoor activities inside. Remember the old adage: When thunder roars, go indoors.

We’re back to heat and humidity for Thursday as the brief respite of drier air comes to a close. Lows will be rather balmy — upper 70s away from the coast, likely at 80° or above closer to the coast and in Downtown Charleston — as the high temperature heads to the mid-to-upper 90s in the afternoon. Expect heat indices 105-110°, with the warmer heat indices near the coast where the higher dewpoints will be found. NWS notes a heat advisory might be needed; will keep an eye on that.

A few thunderstorms will be possible during the day Thursday as a disturbance moves by to the north. A couple storms could be on the strong side with damaging wind gusts the main concern. Not everyone will see storms, though.

We look to get a break from the rain on Wednesday as some slightly drier air works into the area for a spell. It’ll still be plenty hot, though — lows start in the mid-70s away from the warmer coastline to head to the mid-90s in the afternoon as persistent westerly winds delay the seabreeze once again. Expect heat indices in the upper 90s to around 100° with dewpoints suppressed to the upper 60s.

From there, moisture returns to the area and our thunderstorm chances respond in kind as disturbances swing through the trough aloft. There’s a small chance we could deal with a thunderstorm complex in the morning before more thunderstorms fire later Thursday toward peak heating. So it shall be on Friday as well, with a slightly better chance of storms in the afternoon given slightly richer surface dewpoints. A few storms could be on the strong to severe side with damaging wind gusts the main concern. Temperature-wise, expect highs to top out in the mid-90s each day after starting out in the upper 70s. Heat indices will head north of 105° again and could creep toward 110°, so be ready to take heat safety precautions during the afternoons before thunderstorms get going.

After a day in which heat indices spiked to 117° at Mt. Pleasant, we should see another round of hot weather on Tuesday, though perhaps not to the extremes we saw on Monday with somewhat lower dewpoints behind a stalling front. Still, heat indices could approach 110° especially near the coast, and another Heat Advisory might be coming down the pike as a result.

Another thunderstorm complex will move across the South on Tuesday, and could bring some impacts to our nook of the Lowcountry in the evening hours. A lot will depend on how far south the front ultimately gets. For now, the best risk of severe weather looks displaced to the south of the Charleston metro, but we’ll want to keep an eye on this as the day goes on in case things change.

The week ahead gets off to a hot start as westerly winds keep the seabreeze close to the coast for much of the day, driving highs into the mid-to-upper 90s on Monday afternoon. Mix in low-70s dewpoints and heat indices will peak above 105° in the afternoon. From there, a thunderstorm complex will approach the area from the northwest, but it should get here toward the evening and be in a weakening phase as a result. A strong wind gust or two can’t be ruled out, though, especially the further inland you are.

Pretty standard early-August fare is in order for the weekend (weather-wise, anyway). Expect to start Saturday in the mid-70s under partly cloudy skies, with highs heading into the low 90s in the afternoon. Isolated to scattered showers and thunderstorms will be possible, though it’s worth noting that Friday afternoon’s high-resolution models keep coverage pretty sparse across the Tri-County. It’s conceivable that some folks may not see a drop of rain — altogether not the worst thing after a fairly wet Friday.

Expect more of the same on Sunday with temperatures heading a couple degrees warmer than Saturday as a nearby front washes out. Heat indices will push 100° in the afternoon with another chance of a few afternoon and evening thunderstorms. Like Saturday, widespread rain is currently not anticipated — just be ready to bring outdoor activities inside in case thunderstorms approach.

Our recent dry respite is about to come to an end as disturbances aloft interact with a surface front to keep things unsettled for a few days. The greatest coverage of storms will be on Friday as the most vigorous disturbance moves on by with the front sinking into the area. Numerous showers and thunderstorms are expected, and this will have the effect of suppressing highs into the mid-80s. Instability should be fairly weak, and the severe weather threat is low, but some heavy downpours will be possible which could lead to some areas of flooding.