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South Carolina State Climatology Office
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May 4 - May 10, 2015


May weather, true to its history of cool mornings and warm afternoons, was observed early in the week. At 4:00 p.m. on Monday, both Spartanburg and Darlington reported 82 degrees with 28 percent relative humidity. Johnston recorded a Tuesday morning low temperature of 48 degrees and Allendale noted 49 degrees. A sunny Florence warmed to 84 degrees at 3:18 p.m. The Pickens, Hartsville and Manning sun-up temperature on Wednesday was 52 degrees. The Marlboro County airport warmed to 86 degrees. High clouds, part of a distant area of low pressure taking formation over the northern Bahamas, arrived during the afternoon hours over the Lowcountry. While most of South Carolina observed a sun-filled Thursday, showers were moving over the coastal plain. At noon, Charleston reported heavy rain on north winds of 15 mph, gusting to 25 mph. The 1:50 p.m. observation at Hilton Head Island indicated north winds gusting 36 mph. Sub-Tropical Storm Ana formed at 11:00 p.m. about 170 miles southeast of Myrtle Beach. Sullivan's Island received 1.18 inches of rain overnight. Friday's weather was very warm away from the coast. Greenville-Spartanburg AP, Johnston and Sandhill all reached 86 degrees. While warm and sunny conditions were being observed over inland South Carolina, instruments at Springmaid Pier Myrtle Beach were recording a 3:00 p.m. observation of 69 degrees and north-northeast winds gusting to 39 mph. At 5:00 a.m. on Saturday morning, Sub-Tropical Storm Ana was upgraded to Tropical Storm Ana, positioned 115 miles southeast of Myrtle Beach and drifting slowly north-northwestward at 3 mph. Convective banding within Tropical Storm Ana's circulation concentrated over Georgetown and Horry counties. At 8:00 p.m., the storm was 60 miles southeast of Myrtle Beach. Shortly after midnight, N Myrtle Beach Grand Strand Airport recorded northeast winds gusting to 50 mph and at 3:53 a.m., a minimum barometric pressure of 29.62 inches of mercury was observed. Tropical Storm Ana made landfall in Myrtle Beach at 6:00 a.m. on Sunday morning, May 10. This is the earliest known landfall of a tropical storm in South Carolina recordkeeping. Tide heights at Springmaid Pier reached 7.4 feet, which was 2.3 feet above the predicted value. Nearly continuous rains over 22 hours brought N Myrtle Beach a two calendar-day total of 5.88 inches. This was Myrtle Beach's greatest rainfall since Tropical Storm Ernesto (7.19 inches) passed near shore on August 31, 2006. Extensive street flooding and temporary disruptions to electrical service affected Horry County. Showers continued to rotate over the Pee Dee throughout Sunday before exiting northeast. North Inlet (Winyah Bay Georgetown County) measured 2.25 inches of additional rain on Sunday. Warming on Sunday moved the afternoon temperature to 88 degrees for Beaufort, Bamberg, Greenwood and the Greenville-Spartanburg AP. The state average temperature for the seven-day period was two degrees above the long-term average.

The highest official temperature reported was 93 degrees at Santuck on May 10. The lowest official temperature reported was 41 degrees at Jocassee 8WNW on May 4. The heaviest official 24-hour rainfall reported was 5.14 inches at the N Myrtle Beach AP on May 10. The state average rainfall for the seven-day period was 0.2 inches.


  Weekly Jan 1 Departure
Anderson AP 0.00 13.65 -2.6
Greer AP 0.00 15.59 -1.3
Charlotte, NC AP 0.00 14.15 -0.6
Columbia Metro AP 0.01 14.18 -0.3
Orangeburg AP 0.05 12.99 -2.2
Augusta, GA Bush AP 0.00 14.70 -0.9
Florence AP 0.14 13.87 0.9
N Myrtle Beach AP 6.18 19.44 4.4
Charleston AP 0.80 14.66 0.4
Savannah, GA AP 0.66 16.76 2.6

Weekly rainfall totals ending midnight Sunday.


4-inch depth soil temperature: Columbia 73 degrees, Charleston 74 degrees.


South Carolina river stages were near to below normal. Charleston Harbor reported a water temperature of 72 degrees and Springmaid Pier at Myrtle Beach reported a surf water temperature of 70 degrees.

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