Alert archive / Florida / Red Flag Warnings in 2009

Red Flag Warning 42, NWS Jacksonville, FL

April 3, 20095 counties in Florida

NWS Jacksonville, FL issued this red flag warning at Apr 3, 2009, 5:26 PM EDT for 5 counties in Florida. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 3, 2009, 5:26 PM EDT (21:26 UTC)
Expired: Apr 3, 2009, 8:00 PM EDT
In force: 3 hr
Issued by: NWS Jacksonville, FL

Counties Baker County, FL, Bradford County, FL, Flagler County, FL, Nassau County, FL, Union County, FL

The radar

The Jacksonville radar (KJAX), 52 km from the middle of the area, began a volume at 21:27 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 9.4 hours before the alert went out and 229 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: 768 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 801 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 210 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 4.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this red flag 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 red flag warning went out at Apr 3, 2:45 PM EDT, 2 hours 41 minutes earlier.

Area forecast discussion, Apr 3, 2:45 PM EDT, 2 hours 41 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>

Hazardous weather outlook, Apr 3, 2:55 PM EDT, 2 hours 31 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

Local storm report, Apr 3, 1:30 PM EDT, 3 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>

Local storm report, Apr 3, 3:39 PM EDT, 1 hour 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, Apr 3, 4:21 PM EDT, 1 hour 5 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>

Local storm report, Apr 3, 4:26 PM EDT, 1 hour 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
Apr 2, 8:14 PM EDT	Tornado Warning	JAX	Hamilton	18 min
Apr 2, 8:15 PM EDT	Special Weather Statement	JAX	Nassau	45 min
Apr 2, 8:15 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia, Hamilton, Suwannee	60 min
Apr 2, 8:23 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	29 min
Apr 2, 8:40 PM EDT	Special Marine Warning	JAX		2 hr
Apr 2, 8:44 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Duval, Nassau, Saint Johns	46 min
Apr 2, 8:44 PM EDT	Tornado Warning	JAX	Columbia, Hamilton	18 min
Apr 2, 8:56 PM EDT	Areal Flood Advisory	JAX	Baker, Clay, Columbia, Duval, Nassau, Union	2 hr
Apr 2, 8:56 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Duval, Nassau	49 min
Apr 2, 9:07 PM EDT	Special Weather Statement	JAX	Bradford, Union	38 min
Apr 2, 9:15 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia, Hamilton, Suwannee	45 min
Apr 2, 9:28 PM EDT	Severe Thunderstorm Warning	JAX	Bradford, Clay, Duval, Saint Johns	47 min
Apr 2, 9:50 PM EDT	Special Weather Statement	JAX	Nassau	55 min
Apr 2, 10:01 PM EDT	Areal Flood Advisory	JAX	Baker, Columbia, Nassau	119 min
Apr 2, 10:08 PM EDT	Special Weather Statement	JAX	Nassau	52 min
Apr 2, 10:29 PM EDT	Special Weather Statement	JAX	Columbia	46 min
Apr 2, 10:54 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	51 min
Apr 2, 10:58 PM EDT	Special Marine Warning	JAX		2 hr
Apr 2, 11:03 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia, Suwannee, Union	42 min
Apr 2, 11:07 PM EDT	Special Weather Statement	JAX	Clay, Putnam	38 min
Apr 2, 11:19 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Bradford, Clay, Duval, Union	56 min
Apr 2, 11:42 PM EDT	Special Weather Statement	JAX	Duval	48 min
Apr 2, 11:52 PM EDT	Special Weather Statement	JAX	Baker, Columbia, Suwannee	38 min
Apr 3, 12:14 AM EDT	Severe Thunderstorm Warning	JAX	Suwannee	46 min
Apr 3, 12:20 AM EDT	Severe Thunderstorm Warning	JAX	Duval	40 min
Apr 3, 12:35 AM EDT	Areal Flood Warning	JAX	Clay, Duval, Nassau, Saint Johns	9 hr
Apr 3, 12:46 AM EDT	Areal Flood Warning	JAX	Baker, Union	9 hr
Apr 3, 12:54 AM EDT	Special Marine Warning	JAX		2 hr
Apr 3, 1:05 AM EDT	Special Weather Statement	JAX	Duval	40 min
Apr 3, 2:14 AM EDT	Special Weather Statement	JAX	Duval	46 min
Apr 3, 3:51 AM EDT	Special Weather Statement	JAX	Alachua, Bradford	24 min
Apr 3, 4:12 AM EDT	Special Weather Statement	JAX	Clay	33 min
Apr 3, 4:31 AM EDT	Special Weather Statement	JAX	Clay	29 min
Apr 3, 4:35 AM EDT	Tornado Warning	JAX	Clay, Duval, Saint Johns	25 min
Apr 3, 4:49 AM EDT	Special Weather Statement	JAX	Marion	26 min
Apr 3, 4:58 AM EDT	Tornado Warning	JAX	Duval, Saint Johns	32 min
Apr 3, 5:11 AM EDT	Special Weather Statement	JAX	Putnam	64 min
Apr 3, 5:13 AM EDT	Special Marine Warning	JAX		62 min
Apr 3, 5:52 AM EDT	Special Weather Statement	JAX	Putnam	38 min
Apr 3, 5:56 AM EDT	Tornado Warning	JAX	Flagler, Putnam, Saint Johns	49 min
Apr 3, 6:21 AM EDT	Special Marine Warning	JAX		54 min
Apr 3, 6:27 AM EDT	Special Weather Statement	JAX	Marion	33 min
Apr 3, 10:08 AM EDT	Areal Flood Warning	JAX	Baker, Columbia, Hamilton, Nassau, Suwannee, Union	12 hr
Apr 3, 10:12 AM EDT	River Flood Warning	JAX	Columbia, Hamilton	7 days
Apr 2, 8:39 PM EDT	Special Weather Statement	JAX	Brantley, Camden, Glynn, Wayne	51 min
Apr 2, 8:46 PM EDT	Special Weather Statement	JAX	Brantley, Camden, Glynn, Wayne	44 min
Apr 2, 10:20 PM EDT	Special Weather Statement	JAX	Brantley	40 min
Apr 3, 1:14 AM EDT	Areal Flood Warning	JAX	Brantley, Pierce, Wayne	9 hr
Apr 3, 10:23 AM EDT	River Flood Warning	JAX	Wayne	11 days

Nearby

Red Flag Warnings in Florida, 2009 Every red flag warning in 2009

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.