Alert archive / Florida / Rip Current Statements in 2017

Rip Current Statement 20, NWS Mobile, AL

August 11, 2017Baldwin County, Mobile County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this rip current statement at Aug 11, 2017, 5:29 AM CDT for Baldwin County, Mobile County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 26 hr.

The area

The counties it named.

The facts

Issued
Aug 11, 2017, 5:29 AM CDT (10:29 UTC)
Expired
Aug 12, 2017, 7:00 AM CDT
In force
26 hr
Issued by
NWS Mobile, AL

Counties Baldwin County, AL, Mobile County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 82 km from the middle of the area, began a volume at 10:31 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 10.5 hours before the alert went out and 227 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, Slidell Radar S, LA at 00:00Z on 2017-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1134 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, Slidell Radar S, LA at 00:00Z on 2017-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.1939Sfc1 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
1134 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
937 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

162 
WHUS44 KMOB 111029 AAA
CFWMOB

COASTAL HAZARD MESSAGE...UPDATED
NATIONAL WEATHER SERVICE MOBILE AL
529 AM CDT FRI AUG 11 2017

...HIGH RISK OF RIP CURRENTS ALONG THE GULF BEACHES OF ALABAMA 
AND NORTHWEST FLORIDA THROUGH TONIGHT...

ALZ265-266-FLZ202-204-206-120000-
/O.NEW.KMOB.RP.S.0020.170811T1029Z-170812T1200Z/
MOBILE COASTAL-BALDWIN COASTAL-ESCAMBIA COASTAL-
SANTA ROSA COASTAL-OKALOOSA COASTAL-
529 AM CDT FRI AUG 11 2017

...HIGH RIP CURRENT RISK IN EFFECT THROUGH SATURDAY MORNING...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A HIGH RIP
CURRENT RISK, WHICH IS IN EFFECT THROUGH SATURDAY MORNING. 

* IMPACTS...FREQUENT LIFE-THREATENING RIP CURRENTS ARE EXPECTED.
  THE SURF IS DANGEROUS FOR ALL LEVELS OF SWIMMERS.... 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THERE IS A HIGH RISK OF RIP CURRENTS. RIP CURRENTS ARE LIFE- 
THREATENING TO ANYONE ENTERING THE SURF. SWIM NEAR A LIFEGUARD. 
IF CAUGHT IN A RIP CURRENT REMAIN CALM. DON'T FIGHT THE CURRENT. 
SWIM IN A DIRECTION FOLLOWING THE SHORELINE. IF UNABLE TO ESCAPE,
FACE THE SHORE AND CALL OR WAVE FOR HELP. IF TIRED, FLOAT OR 
TREAD WATER UNTIL OUT OF THE RIP CURRENT.

&&

$$
1 follow-up statement
808 
WHUS44 KMOB 112333
CFWMOB

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE MOBILE AL
633 PM CDT FRI AUG 11 2017

...HIGH RISK OF RIP CURRENTS ALONG THE GULF BEACHES OF ALABAMA
AND NORTHWEST FLORIDA THROUGH TONIGHT...

ALZ265-266-FLZ202-204-206-121200-
/O.CON.KMOB.RP.S.0020.000000T0000Z-170812T1200Z/
MOBILE COASTAL-BALDWIN COASTAL-ESCAMBIA COASTAL-
SANTA ROSA COASTAL-OKALOOSA COASTAL-
633 PM CDT FRI AUG 11 2017

...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH SATURDAY
MORNING...

* IMPACTS...FREQUENT LIFE-THREATENING RIP CURRENTS ARE EXPECTED. 
  THE SURF IS DANGEROUS FOR ALL LEVELS OF SWIMMERS.... 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THERE IS A HIGH RISK OF RIP CURRENTS. RIP CURRENTS ARE LIFE-
THREATENING TO ANYONE ENTERING THE SURF. SWIM NEAR A LIFEGUARD.
IF CAUGHT IN A RIP CURRENT REMAIN CALM. DON'T FIGHT THE CURRENT.
SWIM IN A DIRECTION FOLLOWING THE SHORELINE. IF UNABLE TO ESCAPE,
FACE THE SHORE AND CALL OR WAVE FOR HELP. IF TIRED, FLOAT OR
TREAD WATER UNTIL OUT OF THE RIP CURRENT.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 8:05 PM CDTSpecial Marine WarningMOB85 min
Aug 11, 5:18 AM CDTDense Fog AdvisoryMOBBaldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more4 hr

Nearby

Rip Current Statements in Florida, 2017Rip Current Statements in Alabama, 2017Every rip current 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.