Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

August 4, 2017Escambia County, Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this special weather statement at Aug 4, 2017, 6:13 AM CDT for Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 92 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: Aug 4, 2017, 6:13 AM CDT (11:13 UTC)
Expired: Aug 4, 2017, 7:45 AM CDT
In force: 92 min
Issued by: NWS Mobile, AL

Counties Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 67 km from the middle of the area, began a volume at 11:12 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 00:00Z, 11.2 hours before the alert went out and 223 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: 141 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 813 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

117 
WWUS84 KMOB 041113
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
613 AM CDT FRI AUG 4 2017
 
ALZ059-060-264-266-FLZ201>206-041245-
Baldwin Coastal AL-Baldwin Central AL-Covington AL-Escambia AL-
Escambia Inland FL-Okaloosa Inland FL-Okaloosa Coastal FL-
Santa Rosa Coastal FL-Escambia Coastal FL-Santa Rosa Inland FL-
613 AM CDT FRI AUG 4 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...SOUTHEASTERN BALDWIN...SOUTHEASTERN ESCAMBIA...SOUTHERN
COVINGTON...OKALOOSA...SANTA ROSA AND SOUTHEASTERN ESCAMBIA COUNTIES
UNTIL 745 AM CDT...

At 613 AM CDT, the strong thunderstorms were located along a line
extending from 8 miles west of Laurel Hill to near Pensacola Beach,
and moving east at 15 mph.

Winds in excess of 30 mph will be possible with these storms.

Locations impacted include...
Pensacola, Ferry Pass, Brent, West Pensacola, Wright, Fort Walton
Beach, Ensley, Warrington, Crestview, Niceville, Gonzalez, Destin,
Gulf Shores, Eglin AFB, Foley, Pace, Milton, Valparaiso, Gulf Breeze
and Orange Beach.

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 3023 8793 3108 8703 3106 8624 3099 8624
      3099 8639 3046 8639 3048 8628 3040 8628
      3040 8630 3042 8631 3038 8633 3038 8650
      3029 8650
TIME...MOT...LOC 1113Z 285DEG 14KT 3101 8660 3029 8713 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 6:03 AM CDT	Special Marine Warning	MOB		57 min
Aug 4, 6:22 AM CDT	Special Marine Warning	MOB		23 min
Aug 4, 7:20 AM CDT	Special Marine Warning	MOB		55 min
Aug 4, 7:39 AM CDT	Special Marine Warning	MOB		96 min
Aug 4, 8:02 AM CDT	Special Weather Statement	MOB	Baldwin	58 min
Aug 4, 8:22 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Aug 4, 8:38 AM CDT	Flash Flood Warning	MOB	Baldwin	3 hr
Aug 4, 9:14 AM CDT	Special Marine Warning	MOB		2 hr
Aug 4, 11:23 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Aug 4, 12:22 PM CDT	Special Marine Warning	MOB		83 min
Aug 4, 1:17 PM CDT	Special Marine Warning	MOB		88 min
Aug 4, 5:09 PM CDT	Areal Flood Advisory	MOB	Baldwin	2 hr
Aug 4, 5:15 PM CDT	Areal Flood Advisory	MOB	Mobile	2 hr
Aug 4, 5:29 PM CDT	Areal Flood Advisory	MOB	Mobile	2 hr
Aug 4, 5:37 PM CDT	Special Weather Statement	MOB	Mobile	23 min
Aug 4, 5:42 PM CDT	Flash Flood Warning	MOB	Mobile	2 hr
Aug 4, 6:09 PM CDT	Special Weather Statement	MOB	Escambia	51 min
Aug 4, 5:20 AM CDT	Special Weather Statement	MOB	Escambia, Okaloosa, Santa Rosa	40 min
Aug 4, 7:55 AM CDT	Special Weather Statement	MOB	Okaloosa	65 min

Nearby

Special Weather Statements in Florida, 2017 Every special weather statement in 2017

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.