Alert archive / Georgia / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 237, NWS Atlanta, GA

June 25, 2001Cobb County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 25, 2001, 4:06 PM EDT for Cobb County, Georgia. It was in force for 24 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jun 25, 2001, 4:06 PM EDT (20:06 UTC)
Expired: Jun 25, 2001, 4:30 PM EDT
In force: 24 min
Issued by: NWS Atlanta, GA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Cobb County, GA

What was reported inside it

Time	Report	Where	Remark
Jun 25, 4:25 PM EDT	Hail 1	Kennesaw, GA	The public reported quarter size hail.

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, 8.1 hours before the alert went out and 75 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: 239 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 886 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: -10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

669 
WUUS52 KFFC 252007
SVRATL
GAC067-252030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
406 PM EDT MON JUN 25 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN COBB COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 430 PM EDT

* AT 405 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER ACWORTH...MOVING SOUTHEAST AT 15 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...KENNESAW AND
ACWORTH.

HAIL UP TO THE SIZE OF NICKELS CAN BE EXPECTED IN THE WARNED AREA.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3409 8473 3398 8473 3394 8457 3406 8448

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 1:15 PM EDT	Severe Thunderstorm Warning	FFC	Gilmer	30 min
Jun 25, 3:41 PM EDT	Severe Thunderstorm Warning	FFC	Carroll	19 min
Jun 25, 3:57 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa	33 min
Jun 25, 4:22 PM EDT	Severe Thunderstorm Warning	FFC	Walker	28 min
Jun 25, 4:30 PM EDT	Severe Thunderstorm Warning	FFC	Cobb	30 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2001 Every severe thunderstorm warning in 2001

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.