Alert archive / Florida / Rip Current Statements in 2016

Rip Current Statement 108, NWS Tallahassee, FL

December 18, 2016Gulf County, Walton County, Florida

NWS Tallahassee, FL issued this rip current statement at Dec 18, 2016, 9:55 AM CST for Gulf County, Walton County, Florida. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Dec 18, 2016, 9:55 AM CST (15:55 UTC)
Expired
Dec 18, 2016, 9:00 PM CST
In force
11 hr
Issued by
NWS Tallahassee, FL

Counties Gulf County, FL, Walton County, FL

The radar

The Eglin Afb radar (KEVX), 39 km from the middle of the area, began a volume at 15:59 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 12:00Z, 3.9 hours before the alert went out and 137 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, Tallahassee Rgnl, FL at 12:00Z on 2016-12-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 308 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2016-12-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
308 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
541 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
252 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.4

Open this sounding in Storm Lab

The text

As transmitted.

521 
WHUS42 KTAE 181555
CFWTAE

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1055 AM EST SUN DEC 18 2016

...HIGH RISK OF RIP CURRENTS AT WALTON AND GULF COUNTY BEACHES
TODAY...


FLZ108-114-190300-
/O.NEW.KTAE.RP.S.0108.161218T1555Z-161219T0300Z/
SOUTH WALTON-COASTAL GULF-
1055 AM EST SUN DEC 18 2016 /955 AM CST SUN DEC 18 2016/

...HIGH RIP CURRENT RISK IN EFFECT UNTIL 10 PM EST /9 PM CST/
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A HIGH RIP
CURRENT RISK...WHICH IS IN EFFECT UNTIL 10 PM EST /9 PM CST/ THIS
EVENING. 

* TIMING...THROUGH THIS EVENING.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

THERE IS A HIGH RISK OF RIP CURRENTS.

RIP CURRENTS ARE POWERFUL CHANNELS OF WATER FLOWING QUICKLY AWAY
FROM SHORE. THEY OCCUR MOST OFTEN AT LOW SPOTS OR BREAKS IN THE
SANDBAR...AS WELL AS IN THE VICINITY OF JETTIES AND PIERS.

HEED THE ADVICE OF LIFEGUARDS...BEACH PATROL FLAGS...AND SIGNS
BEFORE ENTERING THE WATER. IF CAUGHT IN A RIP CURRENT DO NOT SWIM
AGAINST IT. FACE THE SHORE AND SIGNAL FOR HELP. FLOAT OR TREAD
WATER UNTIL THE CURRENT ENDS OR UNTIL RESCUED.

&&

$$

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 18, 1:27 PM CSTSpecial Marine WarningTAE33 min
Dec 18, 1:41 PM CSTSmall Craft AdvisoryTAE22 hr

Nearby

Rip Current Statements in Florida, 2016Every rip current statement in 2016

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.