Alert archive / Florida / Rip Current Statements in 2018

Rip Current Statement 32, NWS Jacksonville, FL

October 4, 2018Duval County, Flagler County, Nassau County, Florida; Camden County, Glynn County, Georgia

NWS Jacksonville, FL issued this rip current statement at Oct 4, 2018, 3:43 AM EDT for Duval County, Flagler County, Nassau County, Florida; Camden County, Glynn County, Georgia. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Oct 4, 2018, 3:43 AM EDT (07:43 UTC)
Expired: Oct 4, 2018, 8:00 PM EDT
In force: 16 hr
Issued by: NWS Jacksonville, FL

Counties Duval County, FL, Flagler County, FL, Nassau County, FL, Camden County, GA, Glynn County, GA

The radar

The Jacksonville radar (KJAX), 13 km from the middle of the area, began a volume at 07:47 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

Jacksonville, FL (KJAX), launched 00:00Z, 7.7 hours before the alert went out and 13 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: 378 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 964 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: -8 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

548 
WHUS42 KJAX 040743
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
343 AM EDT Thu Oct 4 2018

FLZ124-125-133-138-GAZ154-166-050000-
/O.NEW.KJAX.RP.S.0032.181004T0743Z-181005T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
Coastal Glynn-Coastal Camden-
343 AM EDT Thu Oct 4 2018

...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...

The National Weather Service in Jacksonville has issued a High
Rip Current Risk, which is in effect through this evening. 

* TIMING...Through This Evening. Strong rip currents may be more
  prevalent in the morning and early afternoon during low tide. 

* IMPACTS...Life threatening rip currents and rough surf are
  likely today. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Rip currents will be life threatening.

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 and the beach patrol.
Pay attention to flags and posted signs.

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.

&&

$$

Nearby

Rip Current Statements in Florida, 2018 Rip Current Statements in Georgia, 2018 Every rip current statement 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.