Alert archive / South Carolina / Tornado Watches in 2009
Tornado Watch 777
The Storm Prediction Center issued this tornado watch at Oct 27, 2009, 7:08 PM EDT for Bryan County, Chatham County, Effingham County, Georgia; 7 counties in South Carolina. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 27, 2009, 7:08 PM EDT (23:08 UTC)
- Expired
- Oct 27, 2009, 9:49 PM EDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
Counties Bryan County, GA, Chatham County, GA, Effingham County, GA, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC
The radar
The Charleston,SC radar (KCLX), 31 km from the middle of the area, began a volume at 23:08 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 40%
Warnings issued inside it
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 27, 7:17 PM EDT | Severe Thunderstorm Warning | CHS | Bryan, Bulloch, Chatham, Effingham | 58 min |
| Oct 27, 7:33 PM EDT | Tornado Warning | CHS | Bryan, Chatham, Effingham | 42 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 27, 8:32 AM EDT | Mesoscale Discussion | SPC | Brooks, Decatur, Grady, Seminole, Thomas | 88 min |
| Oct 27, 9:14 AM EDT | Tornado Watch | SPC | Berrien, Brooks, Colquitt, Cook, Decatur, Grady and 6 more | 8 hr |
| Oct 27, 11:24 AM EDT | Mesoscale Discussion | SPC | Decatur, Grady, Seminole, Thomas | 2 hr |
| Oct 27, 2:57 PM EDT | Mesoscale Discussion | SPC | Brooks, Grady, Lanier, Lowndes, Thomas | 2 hr |
| Oct 27, 3:43 PM EDT | Mesoscale Discussion | SPC | Bryan, Chatham, Liberty | 2 hr |
| Oct 27, 4:43 PM EDT | Mesoscale Discussion | SPC | Atkinson, Brantley, Brooks, Camden, Charlton, Clinch and 7 more | 92 min |
| Oct 27, 6:56 PM EDT | Mesoscale Discussion | SPC | Chatham, Effingham | 94 min |
Nearby
Tornado Watches in South Carolina, 2009Tornado Watches in Georgia, 2009Every tornado watch in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.