The period started with temperatures near normal for the end of June, with low temperatures reported in the upper 60s to lower 70s and high temperatures recorded in the mid-90s. Despite ample moisture over the region, there was no significant rainfall outside of localized thunderstorms, which was the dominant weather story for the period. On Monday, June 22, thunderstorms produced wind damage near Anderson, Antreville, and Iva in Anderson County and in Greenville County near the towns of Fork Shoals and Princeton. Slow-moving storms in the Midlands caused flash flooding in east Columbia in Richland County and near Lancaster in Lancaster County.
As a cold front approached the region on Wednesday, southerly flow increased moisture and shower activity across the Southeast. More scattered thunderstorms formed over the state. The National Weather Service station at the Columbia Metropolitan Airport recorded a daily total of 0.68 inches, while the station at the Columbia Owens Downtown Airport reported 1.74 inches. The cold front stalled north of the area on Thursday, providing more diurnal showers and thunderstorm activity heading into the weekend. As a weak upper trough moved away from the area, high pressure built back across the region on Friday, bringing warmer conditions and the threat of isolated storms across the region through the rest of the period.
Severe thunderstorms on Saturday, June 27, produced strong winds in Lexington County, an RC-winds station at Lake Murray measured a wind gust of 58 mph, and a USGS station in Irmo recorded a 43-mph gust. Another round of strong thunderstorms in the Midlands caused wind damage in Aiken, Lexington, Orangeburg, and Richland counties, and spotty damage in portions of the Upstate. A plume of the Saharan Air Layer moved across the Southeast, causing hazy conditions and poor air quality over the weekend and into 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 | 1.27 | 3.019 | 17.2 |
| Greer Airport | 0.60 | 44.03 | 21.1 |
| Charlotte, NC Airport | 0.77 | 30.22 | 9.7 |
| Columbia Metro Airport | 2.89 | 32.57 | 11.7 |
| Orangeburg Airport | 1.11 | 22.70 | 0.3 |
| Augusta, GA Airport | 1.67 | 31.22 | 9.3 |
| Florence Airport | 1.97 | 32.31 | 12.6 |
| North Myrtle Beach Airport | 1.03 | 24.84 | 3.1 |
| Charleston Air Force Base | 1.28 | 26.92 | 5.4 |
| Savannah, GA Airport | 2.73 | 27.87 | 6.1 |
| *Weekly precipitation totals ending midnight Sunday. M - denotes total with missing values. |
4-inch depth soil temperature: Clinton: 76 degrees. Columbia: 78 degrees. Barnwell: 75 degrees. Mullins: 74 degrees.
The rainfall across the state during the period was hit and miss, and various parts of the state reported dry conditions. The rainfall totals since Monday morning were two to three inches across portions of the CSRA and Midlands, with an inch or less observed across the rest of the state, including parts of the Upstate, which recorded less than half an inch. 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. Areas in and around northern Orangeburg County, along with the Lower Savannah River Basin and Lowcountry, missed out on the rainfall.
The USGS streamflow data across the state show most of the gauges report conditions are at normal to above-normal values at 14- and 28-days average streamflow compared to historical data. The only exception is within the Pee Dee Basin, where streamflow values are still high from flows leaving the state of North Carolina.
