Alert archive / Alabama / Frost Advisories in 2006

Frost Advisory 1, NWS Birmingham, AL

March 14, 200623 counties in Alabama

NWS Birmingham, AL issued this frost advisory at Mar 14, 2006, 5:30 AM CST for 23 counties in Alabama. It took effect at Mar 15, 2006, 12:00 AM CST. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Mar 14, 2006, 5:30 AM CST (11:30 UTC)
In effect from: Mar 15, 2006, 12:00 AM CST
Expired: Mar 15, 2006, 7:00 AM CST
In force: 7 hr
Issued by: NWS Birmingham, AL

All 23 counties

Bibb County, AL, Blount County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Etowah County, AL, Fayette County, AL, Jefferson County, AL, Lamar County, AL, Marion County, AL, Pickens County, AL, Randolph County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL

The radar

The Birmingham radar (KBMX), 41 km from the middle of the area, began a volume at 11:30 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

Birmingham, AL (KBMX), launched 00:00Z, 11.5 hours before the alert went out and 40 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: 183 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1360 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Birmingham, AL wrote its last area forecast discussion before this frost advisory went out at Mar 14, 5:11 AM CST, 19 minutes earlier.

Area forecast discussion, Mar 14, 5:11 AM CST, 19 minutes before

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In the hours before

Local storm report, Mar 14, 12:20 AM CST, 5 hours 10 minutes before

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</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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 13, 6:01 PM CST	Tornado Warning	BMX	Blount	44 min
Mar 13, 6:26 PM CST	Tornado Warning	BMX	Walker	19 min
Mar 13, 6:36 PM CST	Tornado Warning	BMX	Jefferson	54 min
Mar 13, 6:42 PM CST	Tornado Warning	BMX	Blount, Etowah, St. Clair	63 min
Mar 13, 6:44 PM CST	Tornado Warning	BMX	Tuscaloosa	46 min
Mar 13, 6:52 PM CST	Severe Thunderstorm Warning	BMX	Sumter	53 min
Mar 13, 7:02 PM CST	Severe Thunderstorm Warning	BMX	Pickens	43 min
Mar 13, 7:26 PM CST	Severe Thunderstorm Warning	BMX	Fayette, Walker	34 min
Mar 13, 7:26 PM CST	Tornado Warning	BMX	Jefferson	40 min
Mar 13, 7:42 PM CST	Tornado Warning	BMX	Calhoun, Cherokee, Etowah	35 min
Mar 13, 7:43 PM CST	Severe Thunderstorm Warning	BMX	Tuscaloosa	47 min
Mar 13, 7:46 PM CST	Severe Thunderstorm Warning	BMX	Sumter	29 min
Mar 13, 7:54 PM CST	Tornado Warning	BMX	St. Clair	29 min
Mar 13, 7:57 PM CST	Severe Thunderstorm Warning	BMX	Hale	48 min
Mar 13, 8:14 PM CST	Severe Thunderstorm Warning	BMX	Bibb	20 min
Mar 13, 8:18 PM CST	Severe Thunderstorm Warning	BMX	Jefferson	16 min
Mar 13, 8:24 PM CST	Severe Thunderstorm Warning	BMX	Marengo	66 min
Mar 14, 3:46 AM CST	Lake Wind Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	13 hr

Nearby

Frost Advisories in Alabama, 2006 Every frost advisory in 2006

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.