Alert archive / Alabama / Areal Flood Advisories in 2012

Areal Flood Advisory 69, NWS Mobile, AL

August 10, 2012Baldwin County, Alabama

NWS Mobile, AL issued this areal flood advisory at Aug 10, 2012, 5:15 PM CDT for Baldwin County, Alabama. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Aug 10, 2012, 5:15 PM CDT (22:15 UTC)
Expired: Aug 10, 2012, 7:15 PM CDT
In force: 2 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 47 km from the middle of the area, began a volume at 22:19 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.3 hours before the alert went out and 192 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: 3400 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 530 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 96 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 areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Mobile, AL wrote its last area forecast discussion before this areal flood advisory went out at Aug 10, 3:25 PM CDT, 1 hour 50 minutes earlier.

Area forecast discussion, Aug 10, 3:25 PM CDT, 1 hour 50 minutes before

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Hazardous weather outlook, Aug 10, 5:14 AM CDT, 12 hours 1 minute before

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In the hours before

Local storm report, Aug 10, 2:17 PM CDT, 2 hours 58 minutes before

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Special weather statement, Aug 10, 2:39 PM CDT, 2 hours 36 minutes before

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Special weather statement, Aug 10, 3:33 PM CDT, 1 hour 42 minutes before

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Special weather statement, Aug 10, 4:03 PM CDT, 1 hour 12 minutes before

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      <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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Special weather statement, Aug 10, 4:21 PM CDT, 54 minutes before

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      <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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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Special weather statement, Aug 10, 4:46 PM CDT, 29 minutes before

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      <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.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 11:56 AM CDT	Special Marine Warning	MOB		64 min
Aug 10, 12:12 PM CDT	Special Marine Warning	MOB		63 min
Aug 10, 1:14 PM CDT	Special Marine Warning	MOB		91 min
Aug 10, 2:02 PM CDT	Special Marine Warning	MOB		43 min
Aug 10, 3:31 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	25 min
Aug 10, 4:29 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	32 min
Aug 10, 12:40 PM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	50 min
Aug 10, 12:56 PM CDT	Areal Flood Advisory	MOB	Okaloosa	2 hr

Nearby

Areal Flood Advisories in Alabama, 2012 Every areal flood advisory in 2012

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.