Georgia sees record low temps in July

July was cool and dry across most of Georgia, with many places receiving record low temperatures.

In Atlanta, the monthly average temperature was 78.1 F (1.9 degrees below normal), in Athens 79.2 degrees (.6 degrees below normal), Columbus 79.8 degrees (2.2 degrees below normal), Macon 80.1 degrees (1 degree below normal), Savannah 80.9 degrees(1.2 degrees below normal), Brunswick 81.4 degrees (1 degree below normal), Alma 80.8 degrees (1.2 degrees below normal) and Augusta 79.9 degrees (.9 degree below normal).

Many daily low temperature records were broken mid-month as cool dry air from the northwest entered the state. Macon's daily low temperature on July 21 was 56 degrees, 9 degrees below the previous record set in 1967. On the same day Columbus reported 61 degrees, 6 degrees below the previous record set in 1974.

Rainfall across most of the state was below normal, according to radar estimates. However, rainfall amounts as much as 8 inches were observed along the Georgia coast, particularly near Brunswick, St. Mary and Savannah, and also along the southwest border near Clay County, according to the Georgia Automated Environmental Monitoring Network.

The highest monthly total from National Weather Service reporting stations was 7.17 inches in Brunswick (2.36 inches above normal) and the lowest was in Athens at 1.33 inches (3.08 inches below normal).

Atlanta received 5.02 inches (.1 inch below normal), Columbus 3.83 inches (1.21 inches below normal), Macon 2.19 inches (2.13 inches below normal), Alma 1.91 inches (4.10 inches below normal), Savannah 6.57 inches (.53 inch above normal), and Augusta 3.29 inches (.78 inch below normal).

The highest monthly total rainfall from the Community Collaborative Rain, Hail and Snow Network was 15.29 inches near St. Mary in the far southeastern corner of the state. Another observer near St. Mary reported 14.57 inches. An observer in Morganton reported 11.49 inches for the month, and an observer in Kingsland reported 10.31 inches.

The high daily rainfall reported by CoCoRaHS observers were 4.80 inches in Carnesville on July 11, followed by 4.68 inches in St. Mary on the July 10, 4.44 inches in Tucker on July 13 and 4.29 inches on Skidaway Island on the July 11.

Two one-day record rainfalls occurred in July. One was in Atlanta, where 1.89 inches fell on July 13, and the other in Brunswick where 2.59 inches fell on July 3.

There were no tornadoes reported. There were scattered reports of hail or strong winds somewhere in Georgia on 13 days. Damage from these events was limited to a few trees down or temporary power outages to a few locations.

The dry conditions aided hay harvesting but caused stress on many field crops. The hit-or-miss rainfalls did not provide any wide-spread relief through the state, although some local areas benefitted.

By Pam Knox
University of Georgia

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Drought Tightens its Grip on North Georgia

Drought conditions continue to grow harsher across north Georgia. Water levels in reservoirs and streams are at or near record lows across most of the region. Groundwater levels are also low.

Lake Lanier, a primary water source for metro Atlanta, is at a record low for mid-November. The previous mid-November record low was at this time last year.

Hartwell, Russell and Clarks Hill lakes in the Savannah River basin are at record low levels. Both Russell and Clarks Hill have less than two feet of usable pool left. Hartwell water levels are dropping very quickly in order to meet downstream needs. The U.S. Army Corp of Engineers reports that the remaining conservation pool for Hartwell is 34 percent, for Russell it’s 32 percent and for Clarks Hill it’s 10 percent.

Even with normal seasonal rains, it’s doubtful that Lanier, Hartwell, Russell or Clarks Hill lakes will fully recover this winter.

Major rivers that are at record low flows for mid-November include the Etowah River at Canton, the Chattahoochee River near Cornelia, Chestatee River near Dahlonega, the Middle Oconee River at Athens, the Broad River near Bell, the Little River near Washington, the Oconee River at Dublin and the Altamaha River near Baxley.

Because of the extremely low stream flows, many counties in north Georgia have had their drought level classifications changed to a more intense level.

Exceptional drought – the most severe drought level - now exists north and east of a line running through Lincoln, Wilkes, Olgethorpe, Oconee, Barrow, Gwinnett, Hall, Forsyth, Cherokee, Pickens, Gilmer and Fannin counties. This region includes Athens, Gainesville and Atlanta’s northern suburbs.

Extreme drought conditions are now in Columbia, Richmond, McDuffie, Glascock, Taliaferro, Warren, Hancock, Greene, Morgan, Walton, Gwinnett, north Fulton and Cherokee counties. The extreme conditions are also in parts of Pickens, Gilmer, Fannin and Murray counties.

Most of the remaining area north of the fall line is in severe drought. Heard, Troup, Harris and most of Talbot and Muscogee counties are in moderate drought.

The ocean-atmosphere system is in what climatologist call a neutral pattern, meaning it is in neither an El Niño nor a La Niña pattern. Historically, neutral-pattern winters have been very variable.

There is no strong indication that the winter of 2008-09 will be abnormally wet or dry. The trend over the past 15 years, however, has been for dry winters.

There is also no strong indication that the winter will be abnormally warm or cool. An important historical observation is that every major devastating freeze has occurred during a neutral-pattern winter.

With recent winters being our best guide, the most prudent response is to assume that this winter will tend toward the dry side. Water conservation efforts should continue.

Additional drought information and updates can be found at www.georgiadrought.org. Automated weather data across Georgia is at www.georgiaweather.net. Daily rainfall data is at www.cocorahs.org. U.S. Geological Survey data is at ga.water.usgs.gov. Water conservation information is available at www.conservewatergeorgia.net.

By David Emory Stooksbury
University of Georgia

David Emory Stooksbury is the state climatologist and a professor in engineering and atmospheric sciences at the University of Georgia.

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