Alert archive / Florida / Rip Current Statements in 2018

Rip Current Statement 41, NWS Jacksonville, FL

December 20, 2018Camden County, Glynn County, Georgia; Duval County, Flagler County, Nassau County, Florida

NWS Jacksonville, FL issued this rip current statement at Dec 20, 2018, 9:13 AM EST for Camden County, Glynn County, Georgia; Duval County, Flagler County, Nassau County, Florida. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Dec 20, 2018, 9:13 AM EST (14:13 UTC)
Expired: Dec 20, 2018, 7:00 PM EST
In force: 10 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 14:14 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 12:00Z, 2.2 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: 32 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 532 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 186 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

503 
WHUS42 KJAX 201413
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
913 AM EST Thu Dec 20 2018

FLZ124-125-133-138-GAZ154-166-210000-
/O.NEW.KJAX.RP.S.0041.181220T1413Z-181221T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
Coastal Glynn-Coastal Camden-
913 AM EST Thu Dec 20 2018

...HIGH RIP CURRENT RISK IN EFFECT UNTIL 7 PM EST THIS EVENING...

The National Weather Service in Jacksonville has issued a High
Rip Current Risk, which is in effect until 7 PM EST this evening.

* LOCATIONS...Southeast Georgia and Northeast Florida beaches.

* RIP CURRENT RISK...High risk of rip currents.

* TIMING...through 7 pm this evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a High Risk of rip currents.

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.

&&

$$

1 follow-up statement

441 
WHUS42 KJAX 210016
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
716 PM EST Thu Dec 20 2018

FLZ124-125-133-138-GAZ154-166-210130-
/O.EXP.KJAX.RP.S.0041.000000T0000Z-181221T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
Coastal Glynn-Coastal Camden-
716 PM EST Thu Dec 20 2018

...HIGH RIP CURRENT RISK HAS EXPIRED...

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 20, 11:13 AM EST	Special Weather Statement	JAX	Camden	47 min
Dec 20, 11:42 AM EST	Severe Thunderstorm Warning	JAX	Camden, Glynn	50 min
Dec 20, 11:56 AM EST	Special Weather Statement	JAX	Wayne	34 min
Dec 20, 2:13 PM EST	Wind Advisory	JAX	Appling, Atkinson, Bacon, Brantley, Camden, Clinch and 6 more	29 hr
Dec 20, 1:49 AM EST	Gale Warning	JAX		50 hr
Dec 20, 7:46 AM EST	Areal Flood Advisory	JAX	Alachua, Marion, Putnam	3 hr
Dec 20, 8:03 AM EST	Special Marine Warning	JAX		87 min
Dec 20, 8:28 AM EST	Special Weather Statement	JAX	Marion	32 min
Dec 20, 9:02 AM EST	Special Marine Warning	JAX		88 min
Dec 20, 9:09 AM EST	Special Weather Statement	JAX	Putnam	36 min
Dec 20, 9:14 AM EST	Special Marine Warning	JAX		61 min
Dec 20, 9:25 AM EST	Areal Flood Advisory	JAX	Bradford, Clay, Flagler, Saint Johns	2 hr
Dec 20, 9:38 AM EST	Special Weather Statement	JAX	Putnam	37 min
Dec 20, 10:02 AM EST	Special Weather Statement	JAX	Saint Johns	28 min
Dec 20, 10:04 AM EST	Special Weather Statement	JAX	Flagler	41 min
Dec 20, 10:24 AM EST	Special Weather Statement	JAX	Duval	36 min
Dec 20, 10:28 AM EST	Special Marine Warning	JAX		62 min
Dec 20, 10:44 AM EST	Special Weather Statement	JAX	Duval	31 min
Dec 20, 10:52 AM EST	Severe Thunderstorm Warning	JAX	Duval, Nassau	38 min
Dec 20, 10:55 AM EST	Severe Thunderstorm Warning	JAX	Duval, Nassau	35 min
Dec 20, 11:25 AM EST	Special Marine Warning	JAX		95 min
Dec 20, 11:32 AM EST	Special Weather Statement	JAX	Clay	43 min
Dec 20, 11:37 AM EST	Special Weather Statement	JAX	Nassau	38 min
Dec 20, 11:40 AM EST	Areal Flood Advisory	JAX	Alachua, Bradford, Clay, Flagler, Marion, Putnam and 1 more	3 hr
Dec 20, 12:12 PM EST	Special Weather Statement	JAX	Clay, Putnam, Saint Johns	48 min
Dec 20, 12:55 PM EST	Special Marine Warning	JAX		65 min
Dec 20, 1:56 PM EST	Special Marine Warning	JAX		64 min
Dec 20, 2:39 PM EST	Areal Flood Advisory	JAX	Alachua, Marion, Putnam	4 hr
Dec 20, 3:01 PM EST	Special Marine Warning	JAX		57 min

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.