Alert archive / Florida / Special Weather Statements in 2018

Special Weather Statement, NWS Mobile, AL

May 20, 2018Okaloosa County, Florida

NWS Mobile, AL issued this special weather statement at May 20, 2018, 1:57 PM CDT for Okaloosa County, Florida. It was in force for 33 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: May 20, 2018, 1:57 PM CDT (18:57 UTC)
Expired: May 20, 2018, 2:30 PM CDT
In force: 33 min
Issued by: NWS Mobile, AL

County Okaloosa County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 7.0 hours before the alert went out and 234 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: 624 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 710 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 41 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 May 20, 6:30 AM CDT, 7 hours 27 minutes earlier.

Area forecast discussion, May 20, 6:30 AM CDT, 7 hours 27 minutes before

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</head>
<body>
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    <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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, May 20, 4:52 AM CDT, 9 hours 5 minutes before

Hazardous Weather Outlook
National Weather Service Mobile AL
452 AM CDT Sun May 20 2018

ALZ051>060-261>266-FLZ201>206-GMZ633-MSZ067-075-076-078-079-211000-
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Escambia-Covington-Mobile Inland-Baldwin Inland-Mobile Central-
Baldwin Central-Mobile Coastal-Baldwin Coastal-Escambia Inland-
Escambia Coastal-Santa Rosa Inland-Santa Rosa Coastal-
Okaloosa Inland-Okaloosa Coastal-Perdido Bay-Wayne-Perry-Greene-
Stone-George-
452 AM CDT Sun May 20 2018

This Hazardous Weather Outlook is for south central Alabama,
southwest Alabama, northwest Florida, southeast Mississippi and the
coastal waters of Alabama and northwest Florida.

.DAY ONE...Today and Tonight.

Isolated afternoon thunderstorms may produce brief strong wind
gusts along outflow boundaries with frequent lightning and brief
locally heavy rainfall.

There is a moderate risk of rip currents across area beaches on
today through tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

GMZ630>632-634>636-650-655-670-675-211000-
Northern Mobile Bay-Southern Mobile Bay-Mississippi Sound-
Pensacola Bay System-Western Choctawhatchee Bay-
Eastern Choctawhatchee Bay-
Coastal waters from Pensacola FL to Pascagoula MS out 20 NM-
Coastal waters from Okaloosa Walton County Line FL to Pensacola FL
out 20 NM-Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM-
Waters from Okaloosa Walton County Line FL to Pensacola FL from
20 to 60 NM-
452 AM CDT Sun May 20 2018

This Hazardous Weather Outlook is for the coastal waters of Alabama
and northwest Florida.

.DAY ONE...Today and Tonight.

Winds and seas will be locally higher near isolated to scattered
storms. Otherwise, the probability for widespread hazardous weather
is low.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

In the hours before

Special weather statement, May 20, 1:57 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Mobile AL
157 PM CDT SUN MAY 20 2018

FLZ203-205-201930-
Okaloosa Inland FL-Santa Rosa Inland FL-
157 PM CDT SUN MAY 20 2018

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHWESTERN OKALOOSA AND EAST CENTRAL SANTA ROSA COUNTIES UNTIL 230
PM CDT...

At 156 PM CDT, the strong thunderstorm was located 8 miles north of
Wright, moving west at 20 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

This storm will remain over mainly rural areas of southwestern
Okaloosa and east central Santa Rosa Counties.

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 3049 8688 3073 8682 3062 8657 3048 8659
      3048 8666
TIME...MOT...LOC 1856Z 099DEG 19KT 3057 8667

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 8:35 PM CDT	Special Weather Statement	MOB	Clarke, Conecuh, Monroe	40 min
May 19, 9:44 PM CDT	Special Weather Statement	MOB	Choctaw	46 min
May 20, 3:08 PM CDT	Special Weather Statement	MOB	Baldwin	37 min
May 20, 3:12 PM CDT	Special Weather Statement	MOB	Baldwin	33 min
May 20, 3:53 PM CDT	Special Weather Statement	MOB	Escambia	52 min
May 20, 3:55 PM CDT	Special Weather Statement	MOB	Monroe	50 min
May 20, 4:54 PM CDT	Special Weather Statement	MOB	Clarke	51 min
May 20, 5:03 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Washington	27 min
May 20, 5:23 PM CDT	Special Weather Statement	MOB	Covington	52 min
May 20, 5:30 PM CDT	Special Marine Warning	MOB		45 min
May 20, 5:50 PM CDT	Special Weather Statement	MOB	Okaloosa	25 min
May 20, 6:21 PM CDT	Special Weather Statement	MOB	Okaloosa	24 min
May 20, 12:16 AM CDT	Special Weather Statement	MOB	Wayne	14 min

Nearby

Special Weather Statements in Florida, 2018 Every special weather statement in 2018

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.