Alert archive / Florida / Flash Flood Watches in 2014

Flash Flood Watch 2, NWS Jacksonville, FL

September 7, 2014Baker County, Suwannee County, Union County, Florida

NWS Jacksonville, FL issued this flash flood watch at Sep 7, 2014, 2:38 PM EDT for Baker County, Suwannee County, Union County, Florida. It was in force for 27 hr.

The area

The counties it named.

The facts

Issued: Sep 7, 2014, 2:38 PM EDT (18:38 UTC)
Expired: Sep 8, 2014, 5:42 PM EDT
In force: 27 hr
Issued by: NWS Jacksonville, FL
Flood severity: None

Counties Baker County, FL, Suwannee County, FL, Union County, FL

The radar

The Jacksonville radar (KJAX), 88 km from the middle of the area, began a volume at 18:39 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 170 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: 1187 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 642 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 63 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 flash flood watch 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 flash flood watch went out at Sep 7, 2:31 PM EDT, 7 minutes earlier.

Area forecast discussion, Sep 7, 2:31 PM EDT, 7 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, Sep 7, 6:35 AM EDT, 8 hours 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.
      </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 7, 12:29 AM EDT	Areal Flood Advisory	JAX	Hamilton	2 hr
Sep 7, 12:50 AM EDT	Areal Flood Advisory	JAX	Columbia	85 min
Sep 7, 1:00 AM EDT	Areal Flood Warning	JAX	Columbia	2 hr
Sep 7, 1:38 AM EDT	Areal Flood Advisory	JAX	Baker, Columbia, Union	112 min
Sep 7, 2:43 AM EDT	Areal Flood Warning	JAX	Alachua, Columbia, Union	2 hr
Sep 7, 3:20 AM EDT	Areal Flood Advisory	JAX	Alachua, Bradford, Union	115 min
Sep 7, 3:27 AM EDT	Areal Flood Warning	JAX	Baker, Columbia, Suwannee, Union	13 hr
Sep 7, 3:30 AM EDT	Areal Flood Advisory	JAX	Baker, Duval, Nassau, Union	2 hr
Sep 7, 3:57 AM EDT	Flash Flood Warning	JAX	Columbia	3 hr
Sep 7, 5:58 AM EDT	Areal Flood Advisory	JAX	Hamilton	2 hr
Sep 7, 6:43 AM EDT	Areal Flood Advisory	JAX	Nassau	2 hr
Sep 7, 6:47 AM EDT	Areal Flood Advisory	JAX	Columbia, Hamilton	118 min
Sep 7, 2:40 PM EDT	Areal Flood Advisory	JAX	Baker	110 min
Sep 7, 3:23 PM EDT	Areal Flood Advisory	JAX	Flagler, Saint Johns	112 min
Sep 7, 3:27 PM EDT	Areal Flood Warning	JAX	Hamilton, Suwannee	2 hr
Sep 7, 4:57 PM EDT	Areal Flood Advisory	JAX	Clay, Putnam, Saint Johns	2 hr
Sep 7, 6:04 PM EDT	Areal Flood Advisory	JAX	Saint Johns	86 min
Sep 7, 6:23 PM EDT	River Flood Warning	JAX	Baker, Nassau	10 days
Sep 6, 10:59 PM EDT	Areal Flood Advisory	JAX	Appling, Bacon, Jeff Davis	2 hr
Sep 7, 12:10 AM EDT	Areal Flood Advisory	JAX	Bacon, Pierce, Ware	110 min
Sep 7, 1:23 AM EDT	Areal Flood Advisory	JAX	Clinch, Ware	112 min
Sep 7, 5:02 AM EDT	Areal Flood Advisory	JAX	Camden	118 min
Sep 7, 4:05 PM EDT	Areal Flood Advisory	JAX	Clinch, Ware	115 min
Sep 7, 4:14 PM EDT	Areal Flood Advisory	JAX	Bacon	91 min
Sep 7, 5:19 PM EDT	Areal Flood Advisory	JAX	Atkinson, Coffee	116 min

Nearby

Flash Flood Watches in Florida, 2014 Every flash flood watch in 2014

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.