Alert archive / Georgia / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 18

January 10, 200059 counties in Georgia

The Storm Prediction Center issued this severe thunderstorm watch at Jan 10, 2000, 1:00 AM EST for 59 counties in Georgia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jan 10, 2000, 1:00 AM EST (06:00 UTC)
Expired: Jan 10, 2000, 6:00 AM EST
In force: 5 hr
Issued by: the Storm Prediction Center

All 59 counties

Baldwin County, GA, Barrow County, GA, Bibb County, GA, Bleckley County, GA, Butts County, GA, Carroll County, GA, Chattahoochee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Crawford County, GA, DeKalb County, GA, Douglas County, GA, Elbert County, GA, Fayette County, GA, Fulton County, GA, Greene County, GA, Gwinnett County, GA, Hancock County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Jackson County, GA, Jasper County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Laurens County, GA, Macon County, GA, Madison County, GA, Marion County, GA, Meriwether County, GA, Monroe County, GA, Morgan County, GA, Muscogee County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Peach County, GA, Pike County, GA, Polk County, GA, Pulaski County, GA, Putnam County, GA, Rockdale County, GA, Schley County, GA, Spalding County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Troup County, GA, Twiggs County, GA, Upson County, GA, Walton County, GA, Washington County, GA, Wilkinson County, GA

The radar

The Atlanta radar (KFFC), 73 km from the middle of the area, began a volume at 06:03 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.

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jan 10, 1:05 AM EST	Severe Thunderstorm Warning	FFC	Carroll	50 min
Jan 10, 1:22 AM EST	Severe Thunderstorm Warning	FFC	Heard	48 min
Jan 10, 1:41 AM EST	Severe Thunderstorm Warning	FFC	Douglas	34 min
Jan 10, 1:50 AM EST	Severe Thunderstorm Warning	FFC	Fulton	50 min
Jan 10, 1:55 AM EST	Severe Thunderstorm Warning	FFC	Coweta	65 min
Jan 10, 2:12 AM EST	Severe Thunderstorm Warning	FFC	DeKalb	33 min
Jan 10, 2:28 AM EST	Severe Thunderstorm Warning	FFC	Gwinnett	32 min

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 6.0 hours before the alert went out and 67 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: 65 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 756 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 204 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

295 
WWUS9 KMKC 100528
SEL8  

SEL8  
MKC WW 100528
GAZ000-101100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 18
STORM PREDICTION CENTER NORMAN OK
1228 AM EST MON JAN 10 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   NORTHERN AND CENTRAL GEORGIA                            

EFFECTIVE THIS MONDAY MORNING FROM 100 AM UNTIL 600 AM EST.

HAIL TO 1 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 75 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHEAST OF ATLANTA
GEORGIA TO 35 MILES SOUTH SOUTHWEST OF MACON GEORGIA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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 16...WW 17...

DISCUSSION...INTENSE BOW ECHO MOVING ENE AT 60 KT IS EXPECTED TO
MOVE INTO GA FROM AL DURING THE NEXT HOUR...ALONG OLD WEDGE FRONT
WHICH CURRENTLY EXTENDS ACROSS THE ATLANTA METRO AREA. LOCALLY VERY
DAMAGING WINDS ARE POSSIBLE GIVEN VERY STRONG TROPOSPHERIC FLOW.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.  MEAN STORM
MOTION VECTOR 25055.


...VESCIO

340,0825 321,0823 321,0850 340,0852

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 10, 2:00 AM EST	Tornado Watch	SPC	Baker, Ben Hill, Calhoun, Clay, Colquitt, Crisp and 28 more	5 hr
Jan 10, 6:00 AM EST	Tornado Watch	SPC	Appling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 55 more	5 hr

Nearby

Severe Thunderstorm Watches in Georgia, 2000 Every severe thunderstorm watch in 2000

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.