Alert archive / Georgia / Tornado Watches in 2007
Tornado Watch 7
The Storm Prediction Center issued this tornado watch at Jan 5, 2007, 4:35 PM EST for 17 counties in Georgia; 8 counties in South Carolina. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 5, 2007, 4:35 PM EST (21:35 UTC)
- Expired
- Jan 6, 2007, 12:00 AM EST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 25 counties
Bryan County, GA, Bulloch County, GA, Candler County, GA, Chatham County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Jenkins County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Montgomery County, GA, Screven County, GA, Tattnall County, GA, Toombs County, GA, Treutlen County, GA, Wheeler 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), 40 km from the middle of the area, began a volume at 21:34 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
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 9.6 hours before the alert went out and 140 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.
- Mixed-layer CAPE
- 557 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 470 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 052142
SEL7
SPC WW 052142
GAZ000-SCZ000-CWZ000-060500-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 7
NWS STORM PREDICTION CENTER NORMAN OK
435 PM EST FRI JAN 5 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEAST GEORGIA
SOUTHERN SOUTH CAROLINA
COASTAL WATERS
EFFECTIVE THIS FRIDAY AFTERNOON FROM 435 PM UNTIL MIDNIGHT EST.
TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE
MILES EITHER SIDE OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF
VIDALIA GEORGIA TO 35 MILES EAST NORTHEAST OF CHARLESTON SOUTH
CAROLINA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 5...WW 6...
DISCUSSION...VERY STRONG DEEP-LAYER ASCENT WILL DEVELOP NEWD AHEAD
OF A VIGOROUS SHORT WAVE TROUGH EJECTING NEWD ACROSS AL/FL AND THE
NRN GULF. THIS WILL CONTINUE TO SUSTAIN VIGOROUS THUNDERSTORM
ACTIVITY THROUGH THE EVENING ACROSS THE SOUTHEAST. ALTHOUGH
WIDESPREAD HEAVY PRECIPITATION HAS DEVELOPED ACROSS SERN GA
ATTM...NUMEROUS EMBEDDED ROTATING CELLS HAVE ALSO INCREASED ACROSS
THE AREA. GIVEN APPROACH OF STRONGER FORCING AND MOIST/UNSTABLE
CONDITIONS EXPECTED TO PERSIST ACROSS THE REGION...THE CHANCES FOR
SEVERE STORMS WITH DAMAGING WINDS AND A COUPLE OF TORNADOES SHOULD
INCREASE THROUGH THE EVENING.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 22035.
...CARBIN/IMYSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 5, 1:47 AM EST | Mesoscale Discussion | SPC | Clay, Heard, Quitman | 28 min |
| Jan 5, 4:13 AM EST | Mesoscale Discussion | SPC | Clay, Early, Quitman, Seminole | 62 min |
| Jan 5, 6:46 AM EST | Mesoscale Discussion | SPC | Baker, Baldwin, Banks, Barrow, Bartow, Ben Hill and 88 more | 59 min |
| Jan 5, 8:21 AM EST | Tornado Watch | SPC | Baker, Baldwin, Barrow, Ben Hill, Bibb, Bleckley and 83 more | 8 hr |
| Jan 5, 10:02 AM EST | Mesoscale Discussion | SPC | Baker, Baldwin, Ben Hill, Bibb, Bleckley, Brooks and 82 more | 118 min |
| Jan 5, 12:06 PM EST | Mesoscale Discussion | SPC | Banks, Elbert, Forsyth, Franklin, Habersham, Hall and 6 more | |
| Jan 5, 12:31 PM EST | Mesoscale Discussion | SPC | Baker, Baldwin, Barrow, Ben Hill, Bibb, Bleckley and 56 more | 119 min |
| Jan 5, 12:41 PM EST | Tornado Watch | SPC | Burke, Columbia, Elbert, Franklin, Habersham, Hart and 5 more | 8 hr |
| Jan 5, 2:16 PM EST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Bleckley and 56 more | 119 min |
| Jan 5, 2:49 PM EST | Tornado Watch | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Brooks and 13 more | 7 hr |
| Jan 5, 3:04 PM EST | Mesoscale Discussion | SPC | Burke, Columbia, Glascock, Jefferson, Lincoln, McDuffie and 3 more | 86 min |
| Jan 5, 4:26 PM EST | Mesoscale Discussion | SPC | Appling, Bryan, Bulloch, Candler, Chatham, Effingham and 13 more | 34 min |
| Jan 5, 6:35 PM EST | Mesoscale Discussion | SPC | Brantley, Bryan, Bulloch, Camden, Charlton, Chatham and 11 more | 85 min |
| Jan 5, 4:20 PM EST | Mesoscale Discussion | SPC | Marlboro | 85 min |
| Jan 5, 5:53 PM EST | Tornado Watch | SPC | Darlington, Dillon, Florence, Georgetown, Horry, Marion and 2 more | 7 hr |
Nearby
Tornado Watches in Georgia, 2007Tornado Watches in South Carolina, 2007Every tornado watch in 2007
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.