Alert archive / Georgia / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 247, NWS Atlanta, GA

July 12, 2000Walton County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 12, 2000, 5:53 PM EDT for Walton County, Georgia. It was in force for 22 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 12, 2000, 5:53 PM EDT (21:53 UTC)
Expired: Jul 12, 2000, 6:15 PM EDT
In force: 22 min
Issued by: NWS Atlanta, GA
Area: Whole counties

County Walton County, GA

The radar

The Atlanta radar (KFFC), 90 km from the middle of the area, began a volume at 21:53 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 was reported inside it

Time	Report	Where	Remark
Jul 12, 5:54 PM EDT	Hail 0.75	Loganville, GA	The public reported dime size hail.
Jul 12, 5:55 PM EDT	Thunderstorm Wind	Loganville, GA	The Walton county 911 center reported telphone lines down in Loganville.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.9 hours before the alert went out and 84 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: 778 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1345 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 31 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.

000 
WUUS52 KFFC 122153
SVRATL
GAC297-122215-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
553 PM EDT WED JUL 12 2000

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WALTON COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 615 PM EDT

* AT 543 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES NORTHWEST OF MONROE...OR ABOUT 5 MILES
  EAST OF LOGANVILLE...MOVING SOUTH AT 15 MPH.

SEVERE THUNDERSTORM WINDS CAN BE AS DESTRUCTIVE AS A TORNADO. FOR
YOUR SAFETY...GO TO A SAFE PLACE IMMEDIATELY.

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. DIME SIZE HAILI HAS ALSO BEEN
REPORTED WITH THIS STORM.  MOVE INDOORS AND STAY AWAY FROM WINDOWS.
DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES.

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 11, 8:51 PM EDT	Severe Thunderstorm Warning	FFC	Gwinnett	39 min
Jul 12, 1:32 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Henry, Spalding	28 min
Jul 12, 1:32 PM EDT	Severe Thunderstorm Warning	FFC	Fayette	28 min
Jul 12, 1:57 PM EDT	Severe Thunderstorm Warning	FFC	Bibb, Twiggs	33 min
Jul 12, 2:04 PM EDT	Severe Thunderstorm Warning	FFC	Lamar, Monroe	26 min
Jul 12, 2:11 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Henry, Spalding	34 min
Jul 12, 2:19 PM EDT	Severe Thunderstorm Warning	FFC	Laurens, Wilkinson	26 min
Jul 12, 2:27 PM EDT	Severe Thunderstorm Warning	FFC	Bibb, Twiggs	33 min
Jul 12, 3:20 PM EDT	Severe Thunderstorm Warning	FFC	Johnson, Laurens, Treutlen	40 min
Jul 12, 3:20 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	40 min
Jul 12, 3:25 PM EDT	Severe Thunderstorm Warning	FFC	Dooly, Macon	50 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2000 Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.