Alert archive / Georgia / Hard Freeze Warnings in 2010

Hard Freeze Warning 21, NWS Jacksonville, FL

December 25, 20107 counties in Florida; 12 counties in Georgia

NWS Jacksonville, FL issued this hard freeze warning at Dec 25, 2010, 2:01 PM EST for 7 counties in Florida; 12 counties in Georgia. It took effect at Dec 26, 2010, 9:00 PM EST. It was in force for 12 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: Dec 25, 2010, 2:01 PM EST (19:01 UTC)
In effect from: Dec 26, 2010, 9:00 PM EST
Expired: Dec 27, 2010, 9:00 AM EST
In force: 12 hr
Issued by: NWS Jacksonville, FL

Counties Baker County, FL, Bradford County, FL, Flagler County, FL, Gilchrist County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Camden County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Glynn County, GA, Jeff Davis County, GA, Pierce County, GA, Wayne County, GA

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 7.0 hours before the alert went out and 315 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1780 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 190 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 hard freeze 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 hard freeze warning went out at Dec 25, 8:56 AM EST, 5 hours 5 minutes earlier.

Area forecast discussion, Dec 25, 8:56 AM EST, 5 hours 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>

Hazardous weather outlook, Dec 25, 9:00 AM EST, 5 hours 1 minute 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
Dec 24, 8:32 PM EST	Frost Advisory	JAX	Baker, Bradford, Gilchrist, Nassau, Suwannee, Union	11 hr
Dec 25, 2:56 AM EST	Small Craft Advisory	JAX		31 hr
Dec 25, 2:59 AM EST	Hard Freeze Watch	JAX	Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more	11 hr
Dec 25, 2:27 PM EST	Fire Weather Watch	JAX	Flagler	13 hr
Dec 25, 2:27 PM EST	Fire Weather Watch	JAX	Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more	24 hr
Dec 25, 2:36 PM EST	Gale Warning	JAX		43 hr

Nearby

Hard Freeze Warnings in Georgia, 2010 Hard Freeze Warnings in Florida, 2010 Every hard freeze warning in 2010

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.