Alert archive / Georgia / Tornado Watches in 2006

Tornado Watch 303

May 7, 200612 counties in Georgia; 8 counties in South Carolina

The Storm Prediction Center issued this tornado watch at May 7, 2006, 12:48 PM EDT for 12 counties in Georgia; 8 counties in South Carolina. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: May 7, 2006, 12:48 PM EDT (16:48 UTC)
Expired: May 7, 2006, 8:00 PM EDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

Counties Bryan County, GA, Bulloch County, GA, Candler County, GA, Chatham County, GA, Effingham County, GA, Evans County, GA, Jenkins County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Screven County, GA, Tattnall County, GA, Allendale County, SC, 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), 8 km from the middle of the area, began a volume at 16:48 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: 40%
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: 50%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

19 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 7, 12:57 PM EDT	Severe Thunderstorm Warning	CHS	Allendale	48 min
May 7, 1:31 PM EDT	Severe Thunderstorm Warning	CHS	Hampton, Jasper	44 min
May 7, 1:35 PM EDT	Severe Thunderstorm Warning	CHS	Hampton	40 min
May 7, 1:41 PM EDT	Severe Thunderstorm Warning	CHS	Allendale	34 min
May 7, 1:42 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	33 min
May 7, 1:46 PM EDT	Severe Thunderstorm Warning	CHS	Colleton	59 min
May 7, 1:49 PM EDT	Tornado Warning	CHS	Berkeley	26 min
May 7, 2:04 PM EDT	Severe Thunderstorm Warning	CHS	Dorchester	26 min
May 7, 2:17 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort	43 min
May 7, 2:19 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	56 min
May 7, 2:29 PM EDT	Severe Thunderstorm Warning	CHS	Dorchester	61 min
May 7, 2:40 PM EDT	Severe Thunderstorm Warning	CHS	Colleton	35 min
May 7, 3:07 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	53 min
May 7, 3:17 PM EDT	Severe Thunderstorm Warning	CHS	Charleston	43 min
May 7, 3:23 PM EDT	Severe Thunderstorm Warning	CHS	Dorchester	38 min
May 7, 3:34 PM EDT	Severe Thunderstorm Warning	CHS	Effingham	41 min
May 7, 4:36 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort	39 min
May 7, 4:51 PM EDT	Severe Thunderstorm Warning	CHS	Colleton	24 min
May 7, 5:01 PM EDT	Severe Thunderstorm Warning	CHS	Charleston	29 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 4.8 hours before the alert went out and 247 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 816 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 923 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 7, 10:56 AM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 66 more	2 hr
May 7, 11:25 AM EDT	Severe Thunderstorm Watch	SPC	Baker, Ben Hill, Berrien, Bibb, Bleckley, Brooks and 50 more	7 hr
May 7, 1:11 PM EDT	Severe Thunderstorm Watch	SPC	Appling, Atkinson, Bacon, Brantley, Camden, Charlton and 8 more	6 hr
May 7, 3:11 PM EDT	Mesoscale Discussion	SPC	Brooks, Grady, Thomas	2 hr
May 7, 3:55 PM EDT	Mesoscale Discussion	SPC	Bryan, Bulloch, Chatham, Effingham, Liberty, Screven	2 hr
May 7, 7:05 PM EDT	Mesoscale Discussion	SPC	Appling, Bacon, Baldwin, Ben Hill, Bibb, Bleckley and 49 more	55 min

Nearby

Tornado Watches in Georgia, 2006 Tornado Watches in South Carolina, 2006 Every tornado watch in 2006

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.