Alert archive / Florida / Special Weather Statements in 2019

Special Weather Statement, NWS Tallahassee, FL

August 3, 2019Walton County, Florida

NWS Tallahassee, FL issued this special weather statement at Aug 3, 2019, 1:33 PM CDT for Walton County, Florida. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 3, 2019, 1:33 PM CDT (18:33 UTC)
Expired
Aug 3, 2019, 2:15 PM CDT
In force
42 min
Issued by
NWS Tallahassee, FL

County Walton County, FL

The radar

The Eglin Afb radar (KEVX), 31 km from the middle of the area, began a volume at 18:36 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.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 6.6 hours before the alert went out and 188 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-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 12:00Z on 2019-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1122 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2019-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1122 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
631 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

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

NWS Tallahassee, FL wrote its last area forecast discussion before this special weather statement went out at Aug 3, 12:30 PM CDT, 1 hour 3 minutes earlier.

Area forecast discussion, Aug 3, 12:30 PM CDT, 1 hour 3 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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In the hours before

Special weather statement, Aug 3, 1:33 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Tallahassee FL
133 PM CDT Sat Aug 3 2019

FLZ007-008-108-031915-
Central Walton FL-South Walton FL-North Walton FL-
133 PM CDT Sat Aug 3 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL WALTON COUNTY UNTIL 215
PM CDT...

At 132 PM CDT, Doppler radar was tracking a strong thunderstorm over
Eglin Air Force Base, or 11 miles northeast of Niceville, moving east
at 15 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
De Funiak Springs, Eglin Air Force Base, Freeport, Eucheeanna,
Portland, Pleasant Ridge, New Home, De Funiak Spring Airport, Argyle
and Rock Hill.

LAT...LON 3066 8639 3077 8605 3051 8599 3050 8639
TIME...MOT...LOC 1832Z 257DEG 12KT 3059 8630

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 1:47 PM CDTSpecial Weather StatementTAEHolmes28 min
Aug 3, 4:07 PM CDTSpecial Weather StatementTAECalhoun, Jackson23 min
Aug 3, 4:26 PM CDTSpecial Weather StatementTAEJackson49 min
Aug 3, 4:46 PM CDTSpecial Weather StatementTAESeminole29 min
Aug 3, 1:57 PM CDTSpecial Weather StatementTAECoffee, Dale33 min
Aug 3, 2:28 PM CDTSevere Thunderstorm WarningTAEDale29 min
Aug 3, 3:14 PM CDTSpecial Weather StatementTAEHouston31 min
Aug 3, 3:30 PM CDTSevere Thunderstorm WarningTAEDale, Geneva, Houston19 min

Nearby

Special Weather Statements in Florida, 2019Every special weather statement in 2019

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; radar from the NEXRAD Level II archive.