National Weather Service United States Department of Commerce
Severe Thunderstorm Safety
The main severe weather threat in the western Carolinas and northeast Georgia is damaging thunderstorm winds. Remember that downbursts can produce wind speeds and damage similar to a tornado. For this reason, it is important to take National Weather Service warnings for severe thunderstorms seriously. Perhaps the greatest hazard associated with downbursts in this region is that of trees falling on automobiles and structures. Over the past 10 years, there have been 7 deaths associated with thunderstorm winds across the western Carolinas and northeast Georgia, each fatality being the result of a falling tree. Most of the monetary structural damage associated with downbursts in this area is from falling trees. Dead and diseased trees are especially susceptible to being downed by severe thunderstorm winds. You should strongly consider having these trees removed from your property, especially if they are located on the west side of your home.

The safest place to be during a severe

 

Fig. 6. One of the greatest dangers associated with downbursts in the western Carolinas and northeast Georgia is from falling trees. Every year, falling trees result in millions of dollars in damage to property across the region. Injuries and even fatalities also occur from time to time.

Fig. 7. Damage to a manufactured home by large hail up to the size of baseballs. Large hail is responsible for billions of dollars in property losses across the United States each year. The damage in this photo occurred on March 15, 2008 near Callison, SC. Photo courtesy of Greenwood County Emergency Management.

severe thunderstorm is on the lowest level of a well-constructed building, in an interior room. Avoid any rooms that may be damaged by falling trees. If you are in an automobile, the safest course of action is to abandon it for sturdy shelter. If shelter is not available, you should attempt to seek out an open area, away from trees and power lines. If strong winds develop, try to turn your vehicle so that your back is to the wind. The strong wind will typically be from the west or northwest.

Fig. 8. Baseball size hail. Hail of this size is rare, but occurs once every couple of years across the area.

If you live in a manufactured home, you should strongly consider leaving the home for nearby sturdier shelter if the home is not securely tied down.

Large hail is mainly a threat to crops and property, rarely causing deaths or even significant injuries to people. However, crop and property damage losses number in the billions of dollars across the country during a typical year. You should always seek shelter indoors during a hailstorm, as injuries from very large and/or wind-driven hail can occur. Although your first priority should always be the safety of

 

Table 1. Reports of hail larger than baseball size across the western Carolinas and northeast Georgia since 1986.
County Nearest City Date Max Hail Size
Davie-NC Mocksville June 4, 1993 Grapefruit
Cabarrus/Rowan-NC Kannapolis May 7, 1998 Softball
Catawba-NC Newton June 3, 1998 Softball
Spartanburg-SC Spartanburg August 20, 1999 Grapefruit
Burke-NC Morganton May 24, 2000 Softball
Oconee-SC Westminster April 28, 2002 Teacup
Abbeville-SC Calhoun Falls May 6, 2003 Grapefruit
Anderson-SC Iva March 15, 2008 Grapefruit
York-SC Clover April 9, 2011 Softball
Greenville-SC Tigerville May 10, 2011 Teacup
Union-SC Union May 23, 2014 Teacup
Spartanburg-SC Greer March 21, 2017 Teacup
 
you and your family during a severe thunderstorm, you should attempt to move valuable property under cover prior to the arrival of a hailstorm.