On Monday, the broad circulation of a distant Tropical Storm Isaac, located in the northern Gulf of Mexico, combined with a seabreeze boundary to produce pockets of heavy rain for the coastal plain. McClellanville received 1.72 inches. Flooding rains developed on Tuesday with additional convergence over the same areas. A CoCoRaHS volunteer observer on Daniel Island measured 7.50 inches of rain. The College of Charleston Observatory received 5.07 inches. Streets within the Charleston peninsula were swamped with standing water of up to two feet in depth. The Mount Pleasant Regional AP recorded a torrential 5.01 inches of which 3.79 inches fell in one hour. The elevated concentration of water in the lower atmosphere was responsible for another episode of heavy rain on Wednesday. The Mount Pleasant Regional AP recorded 5.89 inches of rain in one hour and 40 minutes, beginning at 6:15 p.m. and through 7:55 p.m. In less than 48 hours, 11.89 inches of rain fell at Mount Pleasant. The 3.64 inches of rain at Brookgreen Gardens and the 3.51 inches of rain at Georgetown AP caused flooding from Pawley's Island south into the city of Georgetown. A slow moving boundary dropped southward into the state on Thursday helping to diminish the rainfall coverage. Sunny, humid conditions were observed on Friday with afternoon high temperatures in the lower 90's except for Pinopolis with 96 degrees. At the end of August, the 31-day rainfall range included 16.31 inches at Table Rock to just 4.30 inches at York. The Columbia Metro AP's August total of 9.81 inches was their heaviest August rainfall since 1988. Hot weather made another run for the Labor Day Holiday Weekend. Florence, Kingstree and Clinton reported 95 degrees on Saturday and Sullivan's Island, Dillon and Givhans reached 96 degrees on Sunday. The state average temperature for the seven-day period was three degrees above normal.
The highest official temperature reported was 97 degrees at Cheraw on September 1. The lowest official temperature reported was 55 degrees at Jocassee on August 28. The heaviest official 24-hour rainfall reported was 3.82 inches at Charleston City ending at 7:00 a.m. on August 28. The state average rainfall for the period was 1.2 inches.
PRECIPITATION:
Precipitation
Weekly Jan 1 Departure
Total Total from Avg
Greer AP 0.38 27.08 -5.7
Anderson AP 0.30 29.20 -0.6
Columbia Metro AP 0.63 34.57 2.4
Orangeburg AP 0.57 31.19 -2.4
Charlotte, NC AP 0.64 23.81 -5.0
Augusta, GA Bush AP 2.59 27.17 -4.0
Florence AP 0.81 30.94 0.2
N Myrtle Beach AP 0.81 30.47 -5.4
Charleston AP 3.61 35.13 -1.0
Savannah, GA AP 2.54 33.81 -0.9
Weekly rainfall totals ending midnight Sunday.
SOIL:
4-inch depth soil temperature: Columbia 83 degrees, Charleston 84 degrees.
RIVERS AND SURF:
South Carolina river stages were near normal. Ocean water temperatures at Springmaid Pier Myrtle Beach were reported at 83 degrees.
