Alert archive / Florida / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 381, NWS Jacksonville, FL

September 3, 1998Columbia County, Gilchrist County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Sep 3, 1998, 2:34 AM EDT for Columbia County, Gilchrist County, Florida. It was in force for 91 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: Sep 3, 1998, 2:34 AM EDT (06:34 UTC)
Expired: Sep 3, 1998, 4:05 AM EDT
In force: 91 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

Counties Columbia County, FL, Gilchrist County, FL

What was reported inside it

Time	Report	Where	Remark
Sep 3, 2:45 AM EDT	Thunderstorm Wind	Trenton, FL	Large trees and power lines were blown down.
Sep 3, 3:00 AM EDT	Thunderstorm Wind	Ft White, FL	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 watch it was issued in

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

Issued	Product	Office	Lasted
Sep 2, 10:30 PM EDT	Tornado Watch	SPC	13 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 6.6 hours before the alert went out and 113 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: 93 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 1026 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Sep 2, 8:00 PM EDT, 6 hours 34 minutes earlier.

Area forecast discussion, Sep 2, 8:00 PM EDT, 6 hours 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
800 PM EDT WED SEP 2 1998

A TORNADO WATCH COVERS THE SOUTHERN PORTION OF OUR CWA... AND EXTENDS
W OF A LINE FM CLAY/BRADFORD CO. WATCH IS FOR SPIRALING RAIN BANDS FM
HRCN EARL MOVING ACROSS FL... WATCH CONTS IN EFFECT UNTIL 11 PM. HAVE
HAD SOME RPTS OF FUNNEL CLDS OUT OF MARION CO.

STP OFF THE DOPPLER HAS AVERAGE ABOUT A INCH OVR THE AREA SINCE THIS
EVE... HEAVIEST RAINFALL LOOKS TO MOV INTO SW GA WITH THE COLDEST TOPS
THIS AREA.

ZONES FOR FL... ARE FINE AND WILL NOT UPDATE. ATL WOULD SUGGEST SOME
MODIFICATION IN THE WND PACKAGE OF THE ZONES AS... TLH CURRENTLY HAS
07011KTG19KT...DHN 09015G20KT.

K. KUYPER

In the hours before

Special weather statement, Sep 2, 11:38 PM EDT, 2 hours 56 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Sep 2, 11:38 PM EDT, 2 hours 56 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Sep 2, 11:42 PM EDT, 2 hours 52 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Sep 2, 11:42 PM EDT, 2 hours 52 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 8:44 PM EDT	Tornado Warning	JAX	Alachua	61 min
Sep 2, 8:54 PM EDT	Tornado Warning	JAX	Putnam	61 min
Sep 2, 9:30 PM EDT	Tornado Warning	JAX	Clay	55 min
Sep 2, 10:18 PM EDT	Tornado Warning	JAX	Alachua, Bradford	47 min
Sep 2, 10:23 PM EDT	Tornado Warning	JAX	Clay	62 min
Sep 2, 10:43 PM EDT	Tornado Warning	JAX	Duval	77 min
Sep 2, 11:45 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	75 min
Sep 3, 1:53 AM EDT	Severe Thunderstorm Warning	JAX	Hamilton, Suwannee	77 min
Sep 3, 3:10 AM EDT	Severe Thunderstorm Warning	JAX	Hamilton, Suwannee	90 min
Sep 3, 4:04 AM EDT	Severe Thunderstorm Warning	JAX	Columbia, Gilchrist	91 min
Sep 3, 4:59 AM EDT	Severe Thunderstorm Warning	JAX	Alachua	61 min
Sep 3, 5:23 AM EDT	Severe Thunderstorm Warning	JAX	Baker, Bradford, Columbia, Union	62 min
Sep 3, 3:10 AM EDT	Severe Thunderstorm Warning	JAX	Clinch	90 min
Sep 3, 10:32 AM EDT	Severe Thunderstorm Warning	JAX	Glynn	48 min
Sep 3, 12:34 PM EDT	Severe Thunderstorm Warning	JAX	Camden, Glynn	61 min

Nearby

Severe Thunderstorm Warnings in Florida, 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.