Alert archive / Florida / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 270, NWS Tallahassee, FL

August 20, 2022Gadsden County, Liberty County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Aug 20, 2022, 3:42 PM EDT for Gadsden County, Liberty County, Florida. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 20, 2022, 3:42 PM EDT (19:42 UTC)
Expired
Aug 20, 2022, 4:15 PM EDT
In force
33 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Gadsden County, FL, Liberty County, FL

The radar

The Tallahassee radar (KTLH), 40 km from the middle of the area, began a volume at 19:45 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

Jacksonville, FL (KJAX), launched 12:00Z, 7.7 hours before the alert went out and 292 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, Jacksonville, FL at 12:00Z on 2022-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2055 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, Jacksonville, FL at 12:00Z on 2022-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.1939Sfc1 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
2055 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
811 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 20, 2:10 PM EDT, 1 hour 32 minutes earlier.

Area forecast discussion, Aug 20, 2:10 PM EDT, 1 hour 32 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>

In the hours before

Special weather statement, Aug 20, 12:49 PM EDT, 2 hours 53 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, Aug 20, 1:08 PM EDT, 2 hours 34 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, Aug 20, 2:27 PM EDT, 1 hour 15 minutes before
Special Weather Statement
National Weather Service Tallahassee FL
227 PM EDT Sat Aug 20 2022

FLZ014-015-026-115-201915-
Inland Franklin FL-Liberty FL-Inland Gulf FL-Coastal Franklin FL-
227 PM EDT Sat Aug 20 2022

...A strong thunderstorm will impact portions of northeastern Gulf,
southwestern Liberty and northwestern Franklin Counties through 315
PM EDT/215 PM CDT/...

At 227 PM EDT/127 PM CDT/, Doppler radar was tracking a strong
thunderstorm 17 miles southeast of Wewahitchka, or 17 miles north of
Eastpoint, moving north at 10 mph.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Orange, Wewahitchka, Honeyville, Buck Siding, Morgan Place, Vilas,
Chipola Cutoff, Jensen Place, Central City, Beverly, Red Hill, Owens
Bridge, Kern, Wilma, Lewis, Sumatra, Howard Creek, Willis Landing,
Nixon Garden and Twin Pole.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2991 8474 2982 8509 3009 8524 3025 8503
      3023 8479
TIME...MOT...LOC 1827Z 187DEG 8KT 3000 8494

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

01-GONZALEZ
Special weather statement, Aug 20, 3:08 PM EDT, 34 minutes before
Special Weather Statement
National Weather Service Tallahassee FL
308 PM EDT Sat Aug 20 2022

FLZ013-014-016-026-202000-
Liberty FL-Gadsden FL-Calhoun FL-Inland Gulf FL-
308 PM EDT Sat Aug 20 2022

...Strong thunderstorms will impact portions of north central Gulf
and Calhoun Counties in the Panhandle of Florida, western Gadsden and
northern Liberty Counties in Big Bend of Florida through 400 PM
EDT/300 PM CDT/...

At 307 PM EDT/207 PM CDT/, Doppler radar was tracking strong
thunderstorms along a line extending from 7 miles southeast of
Greensboro to near Stonemill Creek. Movement was north at 10 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Blountstown, Greensboro, Stonemill Creek, Chattahoochee, Orange,
Wewahitchka, Bristol, Rock Bluff, Clarksville, Ocheesee, Juniper,
Selman, Abe Springs, Chipola Cutoff, Hosford, Jensen Place, Rosedale,
Chipola, Red Hill and Clio.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3004 8514 3033 8539 3036 8539 3061 8499
      3061 8493 3062 8491 3064 8491 3068 8487
      3071 8483 3071 8480 3046 8459
TIME...MOT...LOC 1907Z 161DEG 9KT 3047 8469 3011 8511

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

01-GONZALEZ

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 20, 12:49 PM EDTSpecial Weather StatementTAEHolmes41 min
Aug 20, 1:08 PM EDTSpecial Weather StatementTAEWakulla37 min
Aug 20, 2:02 PM EDTSevere Thunderstorm WarningTAEFranklin, Liberty28 min
Aug 20, 2:27 PM EDTSpecial Weather StatementTAELiberty48 min
Aug 20, 3:08 PM EDTSpecial Weather StatementTAECalhoun, Liberty52 min
Aug 20, 3:33 PM EDTAreal Flood AdvisoryTAECalhoun117 min
Aug 20, 4:26 PM EDTSpecial Weather StatementTAEWashington34 min
Aug 19, 9:00 PM EDTAreal Flood AdvisoryTAEColquitt, Cook2 hr
Aug 19, 9:52 PM EDTSpecial Weather StatementTAEDecatur38 min
Aug 20, 4:29 PM EDTSpecial Weather StatementTAEDecatur, Grady46 min
Aug 20, 4:55 PM EDTSevere Thunderstorm WarningTAEGrady50 min
Aug 20, 5:16 PM EDTSevere Thunderstorm WarningTAEBaker, Mitchell59 min
Aug 20, 5:46 PM EDTSevere Thunderstorm WarningTAEClay, Quitman, Randolph28 min
Aug 20, 6:12 PM EDTSpecial Weather StatementTAELowndes33 min
Aug 20, 6:40 PM EDTSpecial Weather StatementTAELowndes35 min
Aug 20, 6:58 PM EDTSevere Thunderstorm WarningTAEBerrien, Cook, Lowndes32 min
Aug 20, 4:52 PM EDTSpecial Weather StatementTAEHenry38 min
Aug 20, 4:59 PM EDTSevere Thunderstorm WarningTAEHenry46 min
Aug 20, 5:36 PM EDTSpecial Weather StatementTAEHenry24 min

Nearby

Severe Thunderstorm Warnings in Florida, 2022Every severe thunderstorm warning in 2022

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.