Alert archive / Florida / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 2, NWS Jacksonville, FL

February 6, 1986Bradford County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Feb 6, 1986, 10:15 AM EST for Bradford County, Florida. It was in force for 30 min.

The area

The counties it named.

The facts

Issued: Feb 6, 1986, 10:15 AM EST (15:15 UTC)
Expired: Feb 6, 1986, 10:45 AM EST
In force: 30 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

County Bradford County, FL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Jacksonville, FL (KAYS), launched 12:00Z, 3.3 hours before the alert went out and 76 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: 228 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 508 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 198 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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.

In the hours before

Special weather statement, Feb 6, 9:21 AM EST, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
920 AM EST THU FEB 6 1986

THUNDERSTORMS PRODUCING STRONG GUSTY WINDS HEAVY RAINS AND
HAIL ARE APPROACHING THE SUWANNEE RIVER AT THIS TIME AND WILL
LIKELY ARRIVE IN THE LAKE CITY GAINESVILLE AREA WITHIN THE NEXT
1 TO 2 HOURS. THE LINE OF THUNDERSTORMS IS EXPECTED TO CROSS THE
NORTHEAST FLORIDA AND SOUTHEAST GEORGIA COASTAL WATERS BEFORE THE
NOON HOUR.

AS THESE THUNDERSTORMS MOVE OVER YOUR AREA THEY WILL LIKELY CAUSE
HEAVY RAINS AND MINOR STREET FLOODING. GUSTY WINDS TO NEAR 35 AND
40 MPH WILL ALSO ACCOMPANY THESE STORMS AS THEY MOVE EAST AT NEAR
40 MPH.

MARINE INTEREST OPERATING IN THE ST JOHNS RIVER AND ITS TRIBUTARIES
THE INTRACOASTAL WATERWAY AND IN THE ATLANTIC...BE ALERT FOR STRONG
GUSTY WINDS BUILDING SEAS AND POOR VISIBILITIES AS THESE THUNDERSTORMS
MOVE OFF THE

Special weather statement, Feb 6, 9:27 AM EST, 48 minutes before

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Special weather statement, Feb 6, 9:28 AM EST, 47 minutes before

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<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.
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      <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
Feb 6, 9:26 AM EST	Tornado Warning	JAX	Clinch, Lanier	64 min
Feb 6, 10:29 AM EST	Severe Thunderstorm Warning	JAX	Brantley, Wayne	61 min
Feb 6, 10:29 AM EST	Severe Thunderstorm Warning	JAX	Long	61 min
Feb 6, 10:15 AM EST	Severe Thunderstorm Warning	JAX	Alachua, Baker, Columbia, Union	30 min
Feb 6, 10:35 AM EST	Severe Thunderstorm Warning	JAX	Clay, Putnam	60 min
Feb 6, 10:35 AM EST	Severe Thunderstorm Warning	JAX	Duval, Nassau	60 min
Feb 6, 10:55 AM EST	Severe Thunderstorm Warning	JAX	Saint Johns	50 min

Nearby

Severe Thunderstorm Warnings in Florida, 1986 Every severe thunderstorm warning in 1986

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.