Alert archive / Georgia / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 79, NWS Jacksonville, FL

April 9, 1998Appling County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 9, 1998, 2:57 AM EDT for Appling County, Georgia. It was in force for 63 min. 2 reports 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: Apr 9, 1998, 2:57 AM EDT (06:57 UTC)
Expired: Apr 9, 1998, 4:00 AM EDT
In force: 63 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

County Appling County, GA

What was reported inside it

Time	Report	Where	Remark
Apr 9, 3:00 AM EDT	Hail 0.88	Baxley, GA
Apr 9, 3:05 AM EDT	Hail 1	Baxley, 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 9, 2:30 AM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 7.0 hours before the alert went out and 150 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: 14 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 512 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 313 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Apr 9, 2:30 AM EDT, 27 minutes earlier.

Area forecast discussion, Apr 9, 2:30 AM EDT, 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
230 AM EDT THU APR 9 1998

LITTLE BUSY THIS AM... TORNADO WATCH PRETTY WELL SPELLS OUT THE PRBLM
THIS AM! FNTL SYS LOOKS TO MAKE IT`S WAY <INTO THE AREA DRG THE AFTN HR.

JAX VAD WND HAS 50 KT JET JUST OFF SFC THIS AM W/ STORM TRACKING NE.

PRELIM

SSI TU 080/054 069/047 07610
JAX TU 083/053 071/045 07610
GNV TU 083/053 072/046 07610

K. KUYPER

In the hours before

Local storm report, Apr 8, 9:10 PM EDT, 5 hours 47 minutes before

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Local storm report, Apr 8, 9:10 PM EDT, 5 hours 47 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 4:38 AM EDT	Severe Thunderstorm Warning	JAX	Hamilton	62 min
Apr 9, 6:17 AM EDT	Severe Thunderstorm Warning	JAX	Suwannee	63 min
Apr 9, 6:33 AM EDT	Severe Thunderstorm Warning	JAX	Columbia	47 min
Apr 9, 7:33 AM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	77 min
Apr 9, 8:06 AM EDT	Tornado Warning	JAX	Duval	64 min
Apr 9, 3:45 AM EDT	Severe Thunderstorm Warning	JAX	Jeff Davis	60 min
Apr 9, 3:53 AM EDT	Tornado Warning	JAX	Jeff Davis	47 min
Apr 9, 4:48 AM EDT	Tornado Warning	JAX	Jeff Davis	47 min
Apr 9, 5:04 AM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols	61 min
Apr 9, 5:21 AM EDT	Severe Thunderstorm Warning	JAX	Coffee	49 min
Apr 9, 5:59 AM EDT	Tornado Warning	JAX	Appling	66 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.