The cold front continued to move through the state on Monday, June 10, and lingering moisture and disturbances kept rain in the forecast through Tuesday, especially along the coast. Severe thunderstorms produced hail and strong winds in portions of Berkeley, Charleston, Colleton, and Dorchester counties. A Charleston National Weather Service (NWS) survey team estimated peak wind gusts of 80 to 85 mph across the Summerville and Ladson areas. The swath of damaging winds measured 8.5 miles in length and 3.5 miles in width; numerous homes and vehicles were significantly damaged by uprooted or snapped trees.
Behind the front, high pressure built into the region, providing drier air and allowing temperatures Tuesday morning to drop into the mid-50s in some locations. However, temperatures would continue to warm, and dry conditions would prevail across the state through midweek. Overnight lows were in the mid to upper 60s, and daytime high temperatures climbed into the low 90s. On Tuesday, the National Hurricane Center began issuing tropical outlooks, indicating a low chance of formation off the SC coast from mid-week to the weekend.
High pressure shifted east on Saturday, and a weak front moved through, allowing for isolated showers and storms along the immediate coast. Temperatures climbed into the mid to upper 90s, and the hot and humid conditions led to heat index values at or above 100 degrees over the weekend in portions of the Lowcountry Midlands and Pee Dee regions. The National Weather Service station at the Columbia Metropolitan Airport recorded a maximum heat index of 106 degrees on Saturday, and the station at the Charleston International Airport recorded a 102-degree heat index.
(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 | 0.25 | 27.05 | 5.9 |
| Greer Airport | 0.03 | 28.88 | 6.2 |
| Charlotte, NC Airport | 0.12 | 23.32 | 3.3 |
| Columbia Metro Airport | 0.30 | 22.03 | 2.6 |
| Orangeburg 2 (COOP) | 0.87 | 16.64 | -5.3 |
| Augusta, GA Airport | 1.24 | 17.76 | -2.4 |
| Florence Airport | 0.12 | 17.44 | -0.9 |
| North Myrtle Beach Airport | 0.54 | 16.63 | -0.9 | Charleston Air Force Base | 0.69 | 21.99 | 2.4 |
| Savannah, GA Airport | 0.48 | 20.62 | 0.5 |
| *Weekly precipitation totals ending midnight Sunday. M - denotes total with missing values. s - denotes total with suspect data. |
4-inch depth soil temperature: Clinton: 79 degrees. Columbia: 79 degrees. Barnwell: 75 degrees. Mullins: 72 degrees.
Most of the state recorded less than a quarter of an inch of rain, and many locations in the Upstate reported no rainfall during the period. High rainfall totals in the Coastal Plain resulted from the interaction of a lingering cold front and a boundary on Monday. The isolated pockets of rainfall total over an inch in the Central Savannah River and Upstate areas, which occurred due to thunderstorms associated with another front passage on Saturday. The extent of the abnormally dry (D0) on the U.S. Drought Monitor changed slightly, as there were some small improvements in areas that received rain. The designation was expanded into some of the drier locations across portions of the Lowcountry and Midlands.
Despite rainfall from the scattered showers and thunderstorms during the period, the lack of rainfall in the headwaters of the watersheds caused the 14-day average streamflow values at gauges across the state to decrease, with some gauges reporting flows below average. The streamflow values on the Black River at Kingstree dropped to well below average levels. River height gauges across the state remained below the action stage, and gauges within the Coastal Plain fell below the action stage due to the relatively dry week.
