The week was relatively quiet, with a few stray, strong thunderstorms and near normal temperatures through the period, with lows in the upper 60s to lower 70s, and highs in the mid-90s. On Monday, June 29, showers and thunderstorms developed during the afternoon and evening hours across portions of the Upstate. Some of the storms contained strong winds, causing minor damage to tree limbs in Anderson, Greenville, Greenwood, and Laurens counties. On Tuesday, a weak cold front approached the area from the north and provided enough instability to cause some showers to form in the Charleston area. A Charleston pilot boat reported a wind gust of 58 mph, and a WeatherFlow station in Charleston Harbor recorded a gust of 53 mph.
By midweek, the frontal boundary lingered across the Midlands and served as a focus of shower and thunderstorm development in the region. A slow-moving storm produced over four inches of rain in the Chapin area in Lexington County, prompting flash flood warnings for the area, and a storm spotter reported pea-sized hail near South Congaree. Partly cloudy skies were on tap, as the front continued to push south through the state on Thursday. High tide, under the full moon, on Thursday evening reached 7.36 ft mean lower low water (MLLW) at the Charleston Harbor tidal gauge, and there were a few reports of shallow coastal flooding along the lower Charleston Harbor areas.
Heading into the holiday weekend, the front drifted further south, toward the Florida-Georgia line, and a drier air mass took control of the weather pattern which helped limit shower activity for the remainder of the period. On Sunday, a weak high pressure was still parked over the region, but moisture started to increase across the Southeast as an area of low pressure formed along the Gulf Coast that would impact the state during the beginning of the new workweek.
(Note: The highest and lowest official temperatures and highest precipitation totals provided below are based on observations from the National Weather Service (NWS) Cooperative Observer network and the National Weather Service's Forecast Offices.)
| Weekly* | Since Jan 1 | Departure | |
|---|---|---|---|
| Anderson Airport | Trace | 39.09 | 16.4 |
| Greer Airport | 1.38 | 45.41 | 21.5 |
| Charlotte, NC Airport | 0.65 | 30.87 | 9.7 |
| Columbia Metro Airport | 0.06 | 32.63 | 10.7 |
| Orangeburg Airport | 0.21 | 22.91 | -0.8 |
| Augusta, GA Airport | 0.01 | 31.23 | 8.3 |
| Florence Airport | 3.38 | 35.69 | 15.0 |
| North Myrtle Beach Airport | 1.63 | 26.47 | 3.5 |
| Charleston Air Force Base | 0.38 | 27.30 | 4.3 |
| Savannah, GA Airport | 1.10 | 28.97 | 5.9 |
| *Weekly precipitation totals ending midnight Sunday. M - denotes total with missing values. |
4-inch depth soil temperature: Clinton: 80 degrees. Columbia: 81 degrees. Barnwell: 76 degrees. Mullins: 78 degrees.
Since the previous week, most of the state measured less than an inch of precipitation, with much of the area along the Savannah River missing out on the rainfall. Some localized areas in the Midlands and Pee Dee recorded more than an inch, with some CoCoRaHS observers recording up to four inches from single thunderstorms. The year-to-date departures from normal show wet conditions across much of the region, with areas of the state recording more than eight inches above normal, and close to twenty inches above normal in portions of the Upstate. Despite these rainfall totals, amounts over the last month continue to be low, and portions of the Lower Savannah River Basin, Lowcountry, and areas of the Upstate are drying out (and appearing in the abnormally dry category).
The USGS streamflow data across the state show most of the gauges are reporting normal to above-normal values at 14- and 28-days. The drier conditions across the northeastern portion of the state and North Carolina allowed streamflow in the Pee Dee Region to drop below ‘high’ values finally.
