Alert archive / Florida / Areal Flood Advisories in 2021

Areal Flood Advisory 162, NWS Mobile, AL

August 2, 2021Okaloosa County, Florida

NWS Mobile, AL issued this areal flood advisory at Aug 2, 2021, 2:56 PM CDT for Okaloosa County, Florida. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Aug 2, 2021, 2:56 PM CDT (19:56 UTC)
Expired: Aug 2, 2021, 5:00 PM CDT
In force: 2 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 65 km from the middle of the area, began a volume at 19:58 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, 7.9 hours before the alert went out and 221 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: 2573 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 632 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -38 m²/s²
0-3 km storm-relative helicity: -17 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 2, 1:02 PM CDT, 1 hour 54 minutes earlier.

Area forecast discussion, Aug 2, 1:02 PM CDT, 1 hour 54 minutes before

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In the hours before

Special weather statement, Aug 2, 2:16 PM CDT, 40 minutes before

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<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.
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</body>
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Special weather statement, Aug 2, 2:23 PM CDT, 33 minutes before

Special Weather Statement
National Weather Service Mobile AL
223 PM CDT Mon Aug 2 2021

ALZ056-022000-
Conecuh AL-
223 PM CDT Mon Aug 2 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...CENTRAL
CONECUH COUNTY UNTIL 300 PM CDT...

At 223 PM CDT, the strong thunderstorm was located 8 miles east of
Peterman, or 11 miles northwest of Evergreen, moving east at 15 mph.

Wind gusts of 40 to 50 mph will be possible with this storm.

This storm will remain over mainly rural areas of central Conecuh
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3145 8682 3143 8717 3149 8719 3152 8717
      3153 8717 3156 8716 3161 8714 3163 8714
      3172 8690 3163 8691 3159 8689 3158 8687
      3155 8687 3154 8685
TIME...MOT...LOC 1923Z 256DEG 15KT 3154 8712

Special weather statement, Aug 2, 2:34 PM CDT, 22 minutes before

Special Weather Statement
National Weather Service Mobile AL
234 PM CDT Mon Aug 2 2021

FLZ205-022000-
Okaloosa Inland FL-
234 PM CDT Mon Aug 2 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...EAST
CENTRAL OKALOOSA COUNTY UNTIL 300 PM CDT...

At 233 PM CDT, the strong thunderstorm was located 5 miles southeast
of Crestview, moving northeast at 5 mph.

Wind gusts of 40 to 50 mph will be possible with this storm.

Locations impacted include...
Crestview.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3059 8645 3067 8663 3085 8658 3081 8639
      3066 8639
TIME...MOT...LOC 1933Z 206DEG 5KT 3070 8651

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 7:03 PM CDT	Special Weather Statement	MOB	Choctaw	42 min
Aug 1, 8:12 PM CDT	Special Weather Statement	MOB	Conecuh	63 min
Aug 1, 8:17 PM CDT	Special Weather Statement	MOB	Choctaw	43 min
Aug 1, 8:39 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	51 min
Aug 1, 8:50 PM CDT	Special Weather Statement	MOB	Wilcox	55 min
Aug 1, 9:02 PM CDT	Special Weather Statement	MOB	Choctaw	43 min
Aug 1, 9:06 PM CDT	Areal Flood Advisory	MOB	Choctaw	3 hr
Aug 1, 9:18 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh	57 min
Aug 1, 9:35 PM CDT	Flash Flood Warning	MOB	Choctaw	6 hr
Aug 1, 9:51 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	31 min
Aug 1, 10:21 PM CDT	Special Weather Statement	MOB	Wilcox	54 min
Aug 1, 10:39 PM CDT	Special Weather Statement	MOB	Monroe	51 min
Aug 1, 10:40 PM CDT	Special Weather Statement	MOB	Conecuh	65 min
Aug 2, 2:23 PM CDT	Special Weather Statement	MOB	Conecuh	37 min
Aug 2, 2:59 PM CDT	Special Weather Statement	MOB	Mobile	46 min
Aug 2, 3:04 PM CDT	Special Weather Statement	MOB	Escambia	26 min
Aug 2, 3:10 PM CDT	Areal Flood Advisory	MOB	Mobile	2 hr
Aug 2, 3:29 PM CDT	Special Weather Statement	MOB	Crenshaw	31 min
Aug 2, 3:32 PM CDT	Special Marine Warning	MOB		43 min
Aug 2, 3:42 PM CDT	Special Weather Statement	MOB	Mobile	48 min
Aug 2, 3:47 PM CDT	Special Weather Statement	MOB	Crenshaw	43 min
Aug 2, 4:32 PM CDT	Areal Flood Advisory	MOB	Covington	118 min
Aug 2, 5:37 PM CDT	Special Marine Warning	MOB		83 min
Aug 2, 2:16 PM CDT	Special Weather Statement	MOB	Santa Rosa	29 min
Aug 2, 2:34 PM CDT	Special Weather Statement	MOB	Okaloosa	26 min

Nearby

Areal Flood Advisories in Florida, 2021 Every areal flood advisory in 2021

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.