Alert archive / Florida / Rip Current Statements in 2018

Rip Current Statement 14, NWS Jacksonville, FL

July 15, 2018Duval County, Flagler County, Nassau County, Florida

NWS Jacksonville, FL issued this rip current statement at Jul 15, 2018, 10:39 AM EDT for Duval County, Flagler County, Nassau County, Florida. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Jul 15, 2018, 10:39 AM EDT (14:39 UTC)
Expired
Jul 15, 2018, 8:00 PM EDT
In force
9 hr
Issued by
NWS Jacksonville, FL

Counties Duval County, FL, Flagler County, FL, Nassau County, FL

The radar

The Jacksonville radar (KJAX), 40 km from the middle of the area, began a volume at 14:41 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, 2.7 hours before the alert went out and 42 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, Jacksonville, FL at 12:00Z on 2018-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1292 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, Jacksonville, FL at 12:00Z on 2018-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
1292 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
748 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
1 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

773 
WHUS42 KJAX 151439
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
1039 AM EDT Sun Jul 15 2018

...MODERATE TO HIGH RISK OF RIP CURRENTS REST OF TODAY...

.A moderate to high risk of rip currents are expected today with 
the higher threat across St Johns and Flagler county beaches. 
This mainly due to the easterly swells and an outgoing tide this 
afternoon.

FLZ124-125-133-138-160000-
/O.NEW.KJAX.RP.S.0014.180715T1439Z-180716T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
1039 AM EDT Sun Jul 15 2018

...HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING...

The National Weather Service in Jacksonville has issued a High
Rip Current Risk, which is in effect until 8 PM EDT this evening.

* TIMING...The rest of today...but rip currents may become
  stronger from about 1 pm through 6 pm.

* IMPACTS...Life threatening rip currents are likely in the surf
  zone today. Always swim near a lifeguard. Nearly a dozen 
  rescues have been reported in Duval and St Johns county the past
  couple of days. Please note that stronger currents are also 
  likely around jetties and piers.

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.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 8:44 PM EDTSpecial Weather StatementJAXMarion31 min
Jul 14, 8:55 PM EDTAreal Flood AdvisoryJAXMarion95 min
Jul 15, 1:16 PM EDTSpecial Weather StatementJAXBradford44 min
Jul 15, 1:36 PM EDTAreal Flood AdvisoryJAXBradford, Clay84 min
Jul 15, 1:52 PM EDTSpecial Weather StatementJAXPutnam23 min
Jul 15, 2:45 PM EDTSpecial Weather StatementJAXNassau45 min
Jul 15, 3:20 PM EDTSpecial Weather StatementJAXNassau25 min
Jul 15, 3:40 PM EDTSpecial Weather StatementJAXMarion35 min
Jul 15, 3:45 PM EDTSpecial Weather StatementJAXNassau30 min
Jul 15, 4:18 PM EDTSpecial Weather StatementJAXMarion27 min
Jul 15, 4:54 PM EDTSpecial Weather StatementJAXSaint Johns36 min
Jul 15, 4:56 PM EDTSpecial Weather StatementJAXFlagler34 min
Jul 15, 5:11 PM EDTAreal Flood AdvisoryJAXSaint Johns2 hr
Jul 15, 5:14 PM EDTSpecial Weather StatementJAXMarion31 min
Jul 15, 5:21 PM EDTSpecial Weather StatementJAXHamilton, Suwannee39 min
Jul 15, 5:28 PM EDTSpecial Weather StatementJAXSaint Johns32 min
Jul 15, 5:51 PM EDTSpecial Weather StatementJAXHamilton39 min
Jul 15, 5:59 PM EDTAreal Flood AdvisoryJAXHamilton, Suwannee91 min
Jul 15, 6:56 PM EDTSpecial Weather StatementJAXHamilton34 min

Nearby

Rip Current Statements in Florida, 2018Every 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.