Alert archive / Georgia / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 113, NWS Jacksonville, FL

May 4, 1998Wayne County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at May 4, 1998, 6:36 PM EDT for Wayne County, Georgia. It was in force for 64 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: May 4, 1998, 6:36 PM EDT (22:36 UTC)
Expired: May 4, 1998, 7:40 PM EDT
In force: 64 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

County Wayne County, GA

What was reported inside it

Time	Report	Where	Remark
May 4, 6:45 PM EDT	Hail 0.88	Screvan, GA

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, 10.6 hours before the alert went out and 119 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: 1091 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 904 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

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

331 
WUUS1 KJAX 042235 RRA
SVRJAX
GAC305-042340-

BULLETIN
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
636 PM EDT MON MAY 4 1998

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WAYNE COUNTY IN SOUTHEASTERN GEORGIA

* UNTIL 740 PM EDT


* AT 635 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 1 MILE WEST OF SCREVEN MOVING EAST AT 30 MPH.

  THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
  SCREVEN                          BY 637 PM EDT
  MCKINNON                         BY 645 PM EDT
  BROADHURST                       BY 645 PM EDT
  JESUP                            BY 650 PM EDT
  MANNINGTOWN                      BY 655 PM EDT

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING
AND STAY AWAY FROM WINDOWS.

WHEN THUNDERSTORMS ARE OCCURRING... PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR
ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS
PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

MOHLIN

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 May 4, 2:10 PM EDT, 4 hours 26 minutes earlier.

Area forecast discussion, May 4, 2:10 PM EDT, 4 hours 26 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
210 PM EDT MON MAY 4 1998

SHWRS AND TSTMS FIRING ALG FRNTL BNDRY OVR SE GA THIS AFTN. SVR WX
WATCH CONTS THIS AREA UNTIL 6 PM. STORMS XPCD TO CONTINUE INTO THE
EVE HRS. CLRG LN LAYS BACK TO THE WEST AND WILL MOVE IN LATER TNGHT.

STORMS OVR N FL MOVING INTO CNTRL FL ARE MORE INDICATIVE OF BOW ECHO
TYPE PATTERN. THIS AREA HAVING SMWHT BETTER INSTABILITY...  ALTHOUGH
BEST DYNAMCIS OVR GA. DVLPMNT OF THIS ACTVTY WILL CONT TO HANG AFTR
SUNSET TAPERING OFF TWRDS MIDNIGHT...MOVMNT CARRIES THIS ACTVTY INTO
TBW AND MLB CWA AREA.

WOULD SUGGEST WORDING ALG THE LINES OF THE REST OF THIS AFTERNOON TO
BRING IN THE CURRENT CONDS THEN HAVING WX TAPERING OFF AFTR TWRDS
MIDNIGHT. WOULD ALSO SUGGEST SMALL CRAFT SHLD EXERCISE CAUTION FOR FL
AND GA WTRS.

PRELIM

SSI UU 061/082 062/081 07200
JAX UU 061/085 059/086 07300
GNV UU 061/085 060/086 07300

K. KUYPER

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 3, 10:02 PM EDT	Severe Thunderstorm Warning	JAX	Jeff Davis	28 min
May 3, 10:13 PM EDT	Severe Thunderstorm Warning	JAX	Appling	32 min
May 4, 1:05 PM EDT	Severe Thunderstorm Warning	JAX	Appling, Bacon, Jeff Davis	50 min
May 4, 1:16 PM EDT	Severe Thunderstorm Warning	JAX	Pierce, Wayne	49 min
May 4, 1:16 PM EDT	Severe Thunderstorm Warning	JAX	Ware	49 min
May 4, 2:19 PM EDT	Severe Thunderstorm Warning	JAX	Pierce, Wayne	61 min
May 4, 3:42 PM EDT	Severe Thunderstorm Warning	JAX	Appling, Wayne	78 min
May 4, 3:53 PM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols	77 min
May 4, 4:23 PM EDT	Severe Thunderstorm Warning	JAX	Bacon, Pierce	47 min
May 4, 5:02 PM EDT	Tornado Warning	JAX	Appling, Bacon	48 min
May 4, 5:14 PM EDT	Severe Thunderstorm Warning	JAX	Pierce	46 min
May 4, 5:39 PM EDT	Severe Thunderstorm Warning	JAX	Wayne	51 min
May 4, 6:08 PM EDT	Severe Thunderstorm Warning	JAX	Echols	67 min
May 4, 6:12 PM EDT	Severe Thunderstorm Warning	JAX	Pierce	48 min
May 4, 7:40 PM EDT	Severe Thunderstorm Warning	JAX	Clinch	30 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1998 Every severe thunderstorm warning in 1998

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.