Alert archive / Florida / Rip Current Statements in 2017

Rip Current Statement 115, NWS Tallahassee, FL

December 20, 20174 counties in Florida

NWS Tallahassee, FL issued this rip current statement at Dec 20, 2017, 2:10 AM CST for 4 counties in Florida. It took effect at Dec 20, 2017, 6:00 AM CST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued
Dec 20, 2017, 2:10 AM CST (08:10 UTC)
In effect from
Dec 20, 2017, 6:00 AM CST
Expired
Dec 21, 2017, 12:00 AM CST
In force
18 hr
Issued by
NWS Tallahassee, FL

Counties Bay County, FL, Franklin County, FL, Gulf County, FL, Walton County, FL

The radar

The Eglin Afb radar (KEVX), 64 km from the middle of the area, began a volume at 08:13 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

Eglin AFB/Valpar, FL (KVPS), launched 00:00Z, 8.2 hours before the alert went out and 106 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, Eglin AFB/Valpar, FL at 00:00Z on 2017-12-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 48 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, Eglin AFB/Valpar, FL at 00:00Z on 2017-12-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.19395878Sfc1 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
48 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
690 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

242 
WHUS42 KTAE 200810
CFWTAE

Coastal Hazard Message
National Weather Service Tallahassee FL
310 AM EST Wed Dec 20 2017

...HIGH RISK OF RIP CURRENTS TODAY ALONG THE BEACHES OF THE
FLORIDA PANHANDLE FROM ST GEORGE ISLAND WEST...


FLZ108-112-114-115-210600-
/O.NEW.KTAE.RP.S.0115.171220T1200Z-171221T0600Z/
South Walton-Coastal Bay-Coastal Gulf-Coastal Franklin-
310 AM EST Wed Dec 20 2017 /210 AM CST Wed Dec 20 2017/

...HIGH RIP CURRENT RISK IN EFFECT FROM 7 AM EST /6 AM CST/ THIS
MORNING THROUGH LATE TONIGHT...

The National Weather Service in Tallahassee has issued a High Rip
Current Risk, which is in effect from 7 AM EST /6 AM CST/ this
morning through late tonight. 

* TIMING...Today.

* SURF...2 to 4 feet with occasional higher sets. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a high risk of rip currents.

Rip currents are powerful channels of water flowing quickly away
from shore, which occur most often at low spots or breaks in the
sandbar and in the vicinity of structures such as groins, jetties
and piers. Heed the advice of lifeguards, beach patrol flags and
signs.

&&

$$

FOURNIER

Nearby

Rip Current Statements in Florida, 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.