Alert archive / Georgia / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 66, NWS Atlanta, GA

May 12, 2001Bibb County, Twiggs County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 12, 2001, 3:31 PM EDT for Bibb County, Twiggs County, Georgia. It was in force for 29 min. 2 reports 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: May 12, 2001, 3:31 PM EDT (19:31 UTC)
Expired: May 12, 2001, 4:00 PM EDT
In force: 29 min
Issued by: NWS Atlanta, GA
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Bibb County, GA, Twiggs County, GA

What was reported inside it

Time	Report	Where	Remark
May 12, 3:35 PM EDT	Hail 0.75	Huber, GA	The Twiggs county 911 center reported dime size hail.
May 12, 4:00 PM EDT	Hail 0.75	Macon, GA	Fire Station No. 10 in Macon reported dime 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, 7.5 hours before the alert went out and 116 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: 273 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1189 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -70 m²/s²
0-3 km storm-relative helicity: 17 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 121931
SVRATL
GAC021-289-122000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
331 PM EDT SAT MAY 12 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN BIBB COUNTY IN CENTRAL GEORGIA
  TWIGGS COUNTY IN CENTRAL GEORGIA

* UNTIL 400 PM EDT

* AT 325 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 13 MILES NORTHWEST OF JEFFERSONVILLE...MOVING
  SOUTHEAST AT 20 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  JEFFERSONVILLE.

HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN
THE WARNED AREA.

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS AND STAY
AWAY FROM WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES.

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 3280 8368 3255 8338 3273 8333 3285 8343

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 2:47 PM EDT	Severe Thunderstorm Warning	FFC	Peach	13 min
May 12, 3:10 PM EDT	Severe Thunderstorm Warning	FFC	Houston	35 min
May 12, 3:28 PM EDT	Severe Thunderstorm Warning	FFC	Johnson, Washington	32 min
May 12, 3:47 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley	28 min
May 12, 4:24 PM EDT	Severe Thunderstorm Warning	FFC	Bibb	36 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.