Alert archive / Georgia / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 252, NWS Atlanta, GA

July 20, 2000Dade County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 20, 2000, 7:12 PM EDT for Dade County, Georgia. It was in force for 48 min. 1 report 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 20, 2000, 7:12 PM EDT (23:12 UTC)
Expired: Jul 20, 2000, 8:00 PM EDT
In force: 48 min
Issued by: NWS Atlanta, GA
Area: Whole counties

County Dade County, GA

The radar

The Northeast Alabama radar (KHTX), 54 km from the middle of the area, began a volume at 23:14 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 20, 7:30 PM EDT	Thunderstorm Wind 50 EG	Trenton, GA	A storm spotter report was relayed through the Morristown, TN National Weather Service office indicating that roof damage was sustained to the roof of the Piney Grove Baptist Church at the intersection of Burkhalter Gap Road and Lookout Mountain Scenic Highway

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 20, 5:00 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.2 hours before the alert went out and 173 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: 11 J/kg
Mixed-layer CIN: -438 J/kg
Mixed-layer LCL: 664 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 28 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 202314
SVRATL
GAC047-055-083-295-210000-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
712 PM EDT THU JUL 20 2000

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CATOOSA COUNTY IN NORTHWEST GEORGIA
  CHATTOOGA COUNTY IN NORTHWEST GEORGIA
  DADE COUNTY IN NORTHWEST GEORGIA
  WALKER COUNTY IN NORTHWEST GEORGIA

* UNTIL 800 PM EDT

* AT 607 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 20 MILES 
  NORTHWEST OF TRENTON TO 30 MILES WEST OF SUMMERVILLE...MOVING EAST 
  AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE TRION...ROSSVILLE...
  RINGGOLD...LOOKOUT MOUNTAIN...LAKEVIEW...LA FAYETTE...INDIAN
  SPRINGS...FORT OGLETHORPE...FAIRVIEW...CHICKAMAUGA AND CHATTANOOGA
  VALLEY

THESE STORMS HAVE A HISTORY OF PRODUCING DAMAGING WINDS. GO I
NSIDE A 
STURDY BUILDING AND STAY AWAY FROM WINDOWS.

IF YOU SEE DAMAGE OR LARGE HAIL...CALL THE NATIONAL WEATHER SERVICE
AT 7 7 0 4 8 6 1 1 3 3 AT EXTENSION 2 0 4.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 7:12 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Walker	48 min
Jul 20, 7:12 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa	48 min
Jul 20, 7:35 PM EDT	Severe Thunderstorm Warning	FFC	Floyd	40 min
Jul 20, 7:55 PM EDT	Severe Thunderstorm Warning	FFC	Haralson, Polk	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.