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South Carolina State Climatology Office
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July 3, 2017 - July 9, 2017


High pressure dominated the week's weather, yielding above normal temperatures, high humidity and afternoon thunderstorms. A Monday morning thunderstorm was observed in Charleston. Widespread Monday afternoon thunderstorms developed binging periods of heavy rain throughout the state. A CoCoRaHS observer on Daufuskie Island measured 0.97 inches of rain that fell between 1:30-2:00 p.m.

A weakening frontal boundary brought morning overcast on the 4th of July. The morning overcast dissipated by early afternoon with diurnal heating. Scattered afternoon and evening thunderstorms provided scattered natural firework displays.

Beginning Wednesday, the sub-tropical high built in from the east raising temperatures and dew points. A persistent west wind added downslope enhancement to the already uncomfortable temperatures Wednesday through Friday. On Friday evening, thunderstorms again produced numerous reports of downed trees and branches along with reports of one-inch hail in Aiken county and one and three-quarter inch hail in Sumter county.

A cold front swept over the state on Sunday bringing slight relief from the week's high temperatures and humidity. The cold front triggered widespread afternoon thunderstorm activity south and east of the I-20 corridor. A slow-moving, strong thunderstorm complex passed over Ehrhardt, Smoaks, and St. George. The Walterboro 3 NNW CoCoRaHS site reported a 2.5-inch, 24-hour rainfall total ending at 7:00 a.m. July 10.

The highest official temperature reported was 98 degrees at Cades 4W on July 6 and the Georgetown County airport July 7.
The lowest official temperature reported was 59 degrees at Spartanburg 3 SSE on July 3.
The heaviest official 24-hour rainfall reported was 3.91 inches at Walterboro 1 SW on July 10.
The state average rainfall for the seven-day period was 1.5 inches.


  Weekly Jan 1 Departure
Anderson AP 0.98 30.65 10.89
Greer AP 2.13 31.73 7.22
Charlotte, NC AP 1.92 27.93 6.28
Columbia Metro AP 0.84 30.25 7.61
Orangeburg AP 0.87 20.86 -3.56
Augusta, GA Bush AP 1.11 24.74 1.3
Florence AP 3.17 22.71 1.38
N Myrtle Beach AP 0.50 17.42 -6.2
Charleston AP 0.37 22.09 -1.73
Savannah, GA AP 2.65 33.66 9.93

Weekly rainfall totals ending midnight Sunday.


4-inch depth soil temperature: Clinton 75 degrees. Columbia 82 degrees. Barnwell 76 degrees. Mullins 70 degrees.


South Carolina river stages were normal.
Charleston Harbor water temperature: 86 degrees.
Fripp Nearshore Buoy (Station 41033): 85.5 degrees.

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Columbia, SC 29202