Alert archive / Florida / Special Weather Statements in 2020

Special Weather Statement, NWS Mobile, AL

November 29, 2020Okaloosa County, Florida

NWS Mobile, AL issued this special weather statement at Nov 29, 2020, 9:21 PM CST for Okaloosa County, Florida. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Nov 29, 2020, 9:21 PM CST (03:21 UTC)
Expired: Nov 29, 2020, 10:00 PM CST
In force: 39 min
Issued by: NWS Mobile, AL

County Okaloosa County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 3.4 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: 7 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 628 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 365 m²/s²
0-3 km storm-relative helicity: 478 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Nov 29, 5:56 PM CST, 3 hours 25 minutes earlier.

Area forecast discussion, Nov 29, 5:56 PM CST, 3 hours 25 minutes before

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  <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.
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In the hours before

Special weather statement, Nov 29, 5:13 PM CST, 4 hours 8 minutes before

Special Weather Statement
National Weather Service Mobile AL
513 PM CST Sun Nov 29 2020

ALZ060-FLZ205-292345-
Covington AL-Okaloosa Inland FL-
513 PM CST Sun Nov 29 2020

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHEASTERN COVINGTON AND NORTHEASTERN OKALOOSA COUNTIES UNTIL 545
PM CST...

At 511 PM CST, the strong thunderstorm was located 4 miles south of
Laurel Hill, or 10 miles southwest of Florala, moving northeast at 45
mph.

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

Locations impacted include...
Florala, Laurel Hill and Lockhart.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3099 8639 3085 8639 3080 8648 3092 8657
      3122 8620 3100 8619
TIME...MOT...LOC 2311Z 233DEG 41KT 3091 8646

Special weather statement, Nov 29, 9:21 PM CST, 0 minutes before

Special Weather Statement
National Weather Service Mobile AL
921 PM CST Sun Nov 29 2020

FLZ205-206-300400-
Okaloosa Inland FL-Okaloosa Coastal FL-
921 PM CST Sun Nov 29 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...SOUTHERN OKALOOSA COUNTY UNTIL 1000 PM CST...

At 920 PM CST, the strong thunderstorms were located along a line
extending from 4 miles northwest of Valparaiso to Lake Lorraine to 10
miles south of Mary Esther, and moving northeast at 45 mph.

Wind gusts of 40 to 50 mph will be possible with these storms.

Locations impacted include...
Wright, Fort Walton Beach, Niceville, Eglin AFB, Valparaiso, Mary
Esther, Ocean City, Lake Lorraine, Shalimar and Cinco Bayou.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3041 8680 3066 8679 3071 8639 3045 8639
      3041 8644 3040 8642 3040 8651 3041 8648
      3046 8651 3043 8657 3046 8660 3040 8660
      3040 8659 3039 8675 3041 8678 3039 8678
TIME...MOT...LOC 0320Z 240DEG 39KT 3054 8657 3041 8656 3027 8660

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 29, 7:23 PM CST	Special Marine Warning	MOB		42 min
Nov 29, 7:28 PM CST	Special Marine Warning	MOB		92 min
Nov 29, 8:08 PM CST	Special Marine Warning	MOB		52 min
Nov 29, 8:50 PM CST	Special Marine Warning	MOB		55 min
Nov 29, 9:00 PM CST	Special Marine Warning	MOB		85 min
Nov 29, 11:09 PM CST	Freeze Warning	MOB	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more	33 hr
Nov 30, 1:37 AM CST	Wind Advisory	MOB	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more	15 hr

Nearby

Special Weather Statements in Florida, 2020 Every special weather statement in 2020

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.