After the hottest day ever (literally!) at GSP, we'll keep the high heat going on Monday. Mountain temperatures will reach the mid 90s, while Upstate spots will again top out in the triple-digits - in the low 100s. Humidity will make it feel hotter, and so the NWS has issued a Heat Advisory for most of the Upstate (only the Oconee, Pickens and Greenville Mountains are excluded) and NE GA - where heat index values will range from 105 to 109 degrees.
The very unstable air mass could allow for another round of PM rain and t-storms - and again, some of these could be strong or severe. Damaging wind and hail will be the main threats. As of mid-morning, we have been dropped from the SPC's Slight Risk area (see outlook here) - but I think a few strong/severe storms will still pop during the late-afternoon and evening hours. As with yesterday's storms, lightning will be frequent with any storms later today.
Heat and humidity will continue through the remainder of the week - including on the 4th of July. Yes, temperatures will dip out of the triple-digits, but it won't be by much (highs will stay in the upper 90s through Thursday). Storms will also be a threat each afternoon, with coverage between 30-40 percent. I think Upstate storms will be fairly hit-or-miss for the holiday... while they will probably be a bit more scattered in the Mountains. Stay tuned as we get closer to Wednesday for more details on that.
As usual, thank you for the awesome weather photos - and keep them coming! We'll be on-air as needed and will post frequent updates to our Facebook page later today... hope you have a great Monday!