Alert archive / Georgia / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 141, NWS Jacksonville, FL

June 27, 2000Brantley County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 27, 2000, 3:58 PM EDT for Brantley County, Georgia. It was in force for 32 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 27, 2000, 3:58 PM EDT (19:58 UTC)
Expired: Jun 27, 2000, 4:30 PM EDT
In force: 32 min
Issued by: NWS Jacksonville, FL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Brantley County, GA

The radar

The Jacksonville radar (KJAX), 83 km from the middle of the area, began a volume at 19:57 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
Jun 27, 4:15 PM EDT	Thunderstorm Wind	Hickox, GA	Large trees and power lines were blown down.

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

Jacksonville, FL (KJAX), launched 12:00Z, 8.0 hours before the alert went out and 82 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: 1358 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 792 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 30 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 KJAX 271959
SVRJAX
GAC025-272030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
358 PM EDT TUE JUN 27 2000

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN BRANTLEY COUNTY IN SOUTHEAST GEORGIA

* UNTIL 430 PM EDT

* AT 358 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 5 MILES
  SOUTH OF HICKOX...OR ABOUT 10 MILES SOUTH OF NAHUNTA...MOVING NORTH
  AT 15 MPH.

* SOME LOCATIONS NEAR THE PATH OF THE STORM THROUGH 430 PM EDT...    
  HICKOX...HOBOKEN AND NAHUNTA...

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.


LAT...LON 3113 8194 3129 8199 3127 8213 3116 8218
          3106 8212

$$

WELSH

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 27, 2:25 PM EDT, 1 hour 33 minutes earlier.

Area forecast discussion, Jun 27, 2:25 PM EDT, 1 hour 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
225 PM EDT TUE JUN 27 2000

SFC ANALYSIS SHOWS RIDGE OF HIGH PRES OVER NORTH FL AND SE GA. W AND
E COAST SEA BREEZES ACTIVE WITH CONVECTION FIRING ALONG THE BOUNDARY
FROM FLAGLER COUNTY NWD TO NASSAU. MORE IMPORTANTLY...AN OUTFLOW
BOUNDARY NOTED IN VIS IMAGERY COMING UP FROM SSE TRIGGERING
ADDITIONAL CONVECTION OVER MARION...PUTNAM...AND FLAGLER. WATER
VAPOR IMAGERY INDICATES THE SHEAR AXIS ALOFT FROM SC TO SE GA AND
THE NE GULF OF MEXICO CONTINUES TO ENHANCE DIFLUENCE OVER THE CWA.

FORECAST...MODELS IN GOOD AGREEMENT AT 500 MB SHOWING THE SHEAR AXIS
OVER THE REGION WEAKENING WITH THE AVN STRONGER WITH AXIS DURING THE
PD. MEANWHILE...SHORTWAVE ENERGY CONTINUES DROPPING INTO THE EASTERN
U.S. TROUGH. THIS TRANSLATES INTO 5H HEIGHTS LOWERING 10-20 M OVER N
FL AND SE GA. MOISTURE PROGS FROM MODELS INDICATE LITTLE CHANGE
DURING THE PD EXCEPT FOR A LITTLE DRYING IN THE MID TO UPPER LEVELS
EARLY WED AFTN THEN INCREASING A LITTLE AGAIN ON THU. WITH MODELS
TENDING TO DRY OUT THE MID LEVELS AND THE SHEAR AXIS WEAKENING
...WILL CONTINUE TREND OF A SLIGHT DECREASE IN POPS. THEREFORE LIKE
THE LOWER NGM POPS OVER FAN GUIDANCE. WEAK 10 KT SLY FLOW OVER LAND
WILL ALLOW SEA BREEZES TO BECOME ACTIVE ON WED WITH BEST RAIN
CHANCES INLAND. ON THU...SHORTWAVE WILL MOVE INTO THE SE STATES WILL
DEVELOP SFC LOW OVER N GA/WRN SC/ERN TN WITH ASSOCIATED FRONTAL
BOUNDARY MOVING INTO N AL. TEND TO DISAGREE WITH AVN/S AGGRESSIVE
SFC LOW OVER AL BY 18Z THU. SFC RIDGE WILL BEGIN DROPPING INTO S FL
BY THAT TIME WITH SFC FLOW OVER CWA BECOMING MORE SWLY. ETA ALSO
SHOWS SHORTWAVE MOVING INTO THE BIG BEND AREA BY 18Z THU WITH OMEGA
FIELD AIDING DAYTIME HEATING SO WILL GO WITH GOOD CHANCE INLAND AND
CHANCE AT THE COAST. GUIDANCE TEMPS LOOK SIMILAR AND WILL ADJUST
WITH PERSISTENCE.

MARINE...WINDS TO STAY MAINLY SLY DURING THE PD AT 10-15 KT.
INCREASING SLY FLOW ON WED NIGHT AND WILL GO WITH 15 KT FOR NOW.
NO HIGHLIGHTS THIS PACKAGE.

EXTENDED...NEW AVN RUN SHOWS LESS AMPLITUDE TO THE 5H TROUGH OVER
THE EAST THAN THE 00Z MRF. THE UKMET ALSO IN SIMILAR AGREEMENT TO THE
LATEST AVN RUN. THIS SHOULD SLOW OR HALT SWD MOVEMENT OF THE FRONT.
THEREFORE PREFER TO LEAVE A CHANCE OF SHOWERS AND THUNDERSTORMS
FRI-SUN AT LEAST FOR N FL.

PRELIM
AMG 70/89/71/90 2525
SSI 74/88/74/89 3524
JAX 71/960/71/91 3524
GNV 70/90/69/90 3625 02

.JAX...
.GA...NONE
.FL...NONE

ARS

In the hours before

Special weather statement, Jun 27, 12:52 PM EDT, 3 hours 6 minutes before

FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-272200-

NORTHEAST FLORIDA/SOUTHEAST GEORGIA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1252 PM EDT TUE JUN 27 2000

A WEAK UPPER LEVEL LOW OVER SOUTHEASTERN GEORGIA WILL ENHANCE
SCATTERED TO NUMEROUS THUNDERSTORMS ACROSS THE AREA THIS AFTERNOON.
A LINE OF STORMS OVER CENTRAL FLORIDA IS MOVING NORTHWARD INTO A
VERY UNSTABLE AIR MASS.  A FEW STORMS COULD BECOME SEVERE WITH
DAMAGING WIND GUSTS AND HAIL. LOCAL RAINFALL AMOUNTS OF 2 TO 3 INCHES
MAY BE EXPECTED.

STORM SPOTTERS SHOULD BE ALERT FOR POSSIBLE ACTIVATION.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
JACKSONVILLE WEBSITE ON THE INTERNET AT WWW.NWSJAX.NOAA.GOV.

TRABERT

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.