Alert archive / Alabama / Wind Advisories in 2018

Wind Advisory 7, NWS Mobile, AL

October 10, 2018Covington County, Crenshaw County, Alabama; Okaloosa County, Florida

NWS Mobile, AL issued this wind advisory at Oct 10, 2018, 4:12 PM CDT for Covington County, Crenshaw County, Alabama; Okaloosa County, Florida. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Oct 10, 2018, 4:12 PM CDT (21:12 UTC)
Expired
Oct 10, 2018, 10:00 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL

Counties Covington County, AL, Crenshaw County, AL, Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 88 km from the middle of the area, began a volume at 21:15 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 12:00Z, 9.2 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-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2018-10-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 218 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2018-10-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
218 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
535 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

805 
WWUS74 KMOB 102112
NPWMOB

URGENT - WEATHER MESSAGE
National Weather Service Mobile AL
412 PM CDT Wed Oct 10 2018


ALZ058-060-FLZ205-206-110300-
/O.NEW.KMOB.WI.Y.0007.181010T2112Z-181011T0300Z/
Crenshaw-Covington-Okaloosa Inland-Okaloosa Coastal-
Including the cities of Brantley, Luverne, Andalusia, Opp, 
Crestview, Destin, Eglin AFB, Fort Walton Beach, Niceville, 
Seminole, Valparaiso, and Wright
412 PM CDT Wed Oct 10 2018

...WIND ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

The National Weather Service in Mobile has issued a Wind
Advisory, which is in effect until 10 PM CDT this evening. 

* TIMING...Gusty winds will persist through this evening, but will 
  diminish as late evening approaches and Hurricane Michael moves 
  further away from the area. 

* WINDS...Frequent wind gusts of 30 to 40 mph.

* IMPACTS...These gusty winds may result in the downing of a few
  shallow rooted trees. The winds will also blow around loose
  outdoor objects and make driving difficult for high profile
  vehicles. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 25 to 39 mph or frequent
gusts of 30 to 39 mph are expected. Winds this strong can make
driving difficult, especially for high profile vehicles. Use
extra caution. Also, secure any loose outdoor objects as they
could be blown around in the wind. 

&&

$$
1 follow-up statement
611 
WWUS74 KMOB 110312
NPWMOB

URGENT - WEATHER MESSAGE
National Weather Service Mobile AL
1012 PM CDT Wed Oct 10 2018

ALZ058-060-FLZ205-206-110415-
/O.EXP.KMOB.WI.Y.0007.000000T0000Z-181011T0300Z/
Crenshaw-Covington-Okaloosa Inland-Okaloosa Coastal-
Including the cities of Brantley, Luverne, Andalusia, Opp, 
Crestview, Destin, Eglin AFB, Fort Walton Beach, Niceville, 
Seminole, Valparaiso, and Wright
1012 PM CDT Wed Oct 10 2018

...WIND ADVISORY HAS EXPIRED...

Winds across the advisory area have dropped below criteria,
therefore the Wind Advisory was allowed to expire at 10 PM.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 10, 12:54 PM CDTSmall Craft AdvisoryMOB11 hr
Oct 10, 1:40 PM CDTAreal Flood WarningMOBCovington9 hr
Oct 10, 3:59 PM CDTHigh Surf AdvisoryMOBBaldwin, Mobile14 hr

Nearby

Wind Advisories in Alabama, 2018Wind Advisories in Florida, 2018Every wind advisory 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; radar from the NEXRAD Level II archive.