GREENVILLE, S.C. (FOX Carolina) – The remnants of now Post-Tropical Cyclone Arthur move into the Western Carolinas tonight, bringing a First Alert Weather threat for heavy rain and severe weather. Damaging wind gusts and locally heavy rainfall create the main concerns for our area.
What’s Happening Today
A few showers and thunderstorms are possible this afternoon ahead of the main event which arrives overnight. During the day, strong southwest winds develop, gusting up to 35 mph in the Upstate and around 25 mph in the mountains.
High temperatures reach the mid to upper 80s with humidity climbing. It’s a very tropical feeling day.
Tonight: The Peak Threat
The main rainmaker moves into the area after sunset, with heavy rainfall expected before 4 a.m. in the Upstate and before midnight in the mountains which is why it’s a First Alert Weather Day.
Locally heavy rainfall rates occur as the remnants of Arthur pushes tropical moisture into the area. Most areas see 1″-2″ of rain with locally highs amounts of 3″-4″ in areas where heavy rain drops. The highest totals are expected over the Upstate. Because our drought status has improved over the last several weeks, isolated flooding could become an issue overnight.
Damaging straight line winds are the main threat for severe weather, but we can’t completely rule out an isolated tornado in the Upstate.
The main timeframe to see severe weather is between 5 p.m. and 2 a.m. Since this is while many of you are asleep, be sure to have the Fox Carolina First Alert Weather App on your phone so you can get severe alerts.
Friday (Juneteenth) – Drying Out
The tropical moisture moves out early in the morning, ushered out by a cold front sliding in from the northwest. As the front moves through, isolated showers and thunderstorms may develop late morning into early afternoon, but nothing severe is expected. Afternoon highs reach the mid to upper 80s. Lighter winds and decreasing humidity make conditions much more pleasant as the day progresses. Lows Friday night dip to the low-to-mid 60s.
Saturday – The Perfect Day
High pressure moves into the region, delivering a sunny and quiet Saturday. Temperatures reach the mid to upper 80s across the Western Carolinas. It’s the ideal day to get outdoors and enjoy the lower humidity. This is a brief break before our next weather system arrives.
Sunday Into Next Week – Rain Returns
Diurnal convection—scattered thunderstorms triggered by daytime heating—develops Sunday afternoon and evening, especially across the mountains. This is your typical summer time pattern. We can’t completely rule out a strong to severe storm, but the risk is low. Otherwise, it’s an overall nice day for Father’s Day on Sunday. Mostly sunny skies and warm conditions, highs in the mid-upper 80s across the area.
Showers and thunder become possible daily through the middle of next week. Temperatures settle into the mid to upper 80s each afternoon which is normal for late June. The humidity stays somewhat low which means the overnight hours are pleasant with lows in the 60s.
What You Need to Do
Tonight: Use caution on the roads between 8 p.m. and 4 a.m. Have a way to receive weather alerts, and stay away from flood-prone areas. Secure any outdoor items that could catch the wind. If you experience damaging winds, seek shelter immediately.
Prepare your travel plans: The morning commute Friday should be better, but watch for ponded water on roads from tonight’s heavy rain. Delays from overnight storms may impact early-morning traffic.
Next week: Keep an umbrella handy as scattered thunderstorms become part of the daily forecast pattern. Stay with us for updated timing and storm tracking through the week…