Alert archive / Florida / Rip Current Statements in 2018

Rip Current Statement 20, NWS Jacksonville, FL

September 9, 2018Duval County, Flagler County, Nassau County, Florida

NWS Jacksonville, FL issued this rip current statement at Sep 9, 2018, 3:43 AM EDT for Duval County, Flagler County, Nassau County, Florida. It took effect at Sep 9, 2018, 6:00 AM EDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued
Sep 9, 2018, 3:43 AM EDT (07:43 UTC)
In effect from
Sep 9, 2018, 6:00 AM EDT
Expired
Sep 9, 2018, 8:00 PM EDT
In force
14 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 07:44 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 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 00:00Z on 2018-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1222 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 00:00Z on 2018-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
1222 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
914 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

129 
WHUS42 KJAX 090743
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
343 AM EDT Sun Sep 9 2018

FLZ124-125-133-138-100000-
/O.NEW.KJAX.RP.S.0020.180909T1000Z-180910T0000Z/
/O.CON.KJAX.CF.Y.0004.000000T0000Z-180910T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
343 AM EDT Sun Sep 9 2018

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...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.

* SURF AND RIP CURRENT RISK...Rough surf and life-threatening rip
  currents at northeast Florida beaches today.

* COASTAL FLOODING...Onshore flow and the approach of a new moon
  will keep water levels rising along the Atlantic coast,
  Intracoastal Waterway this weekend.

* TIMING...Peak water levels will occur near daily high tide
  through Sunday. Life threatening rip currents are possible at
  any time.

* IMPACTS...Minor tidal flooding will impact low lying areas, 
  parks, beaches, campgrounds, boat ramps, and some docks around 
  high tide through the weekend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a High Risk of life threatening 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 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.

&&

$$

FLZ033-037-038-GAZ154-166-100000-
/O.CON.KJAX.CF.Y.0004.000000T0000Z-180910T0000Z/
Inland St. Johns-Putnam-Inland Flagler-Coastal Glynn-
Coastal Camden-
343 AM EDT Sun Sep 9 2018

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* COASTAL FLOODING...Onshore flow and the approach of a new moon
  will continue to raise water levels along the Atlantic coast, 
  Intracoastal Waterway and the upper St. Johns River this 
  weekend.

* TIMING...Peak water levels will occur near daily high tide 
  through Sunday.

* IMPACTS...Minor tidal flooding will impact low lying areas, 
  parks, beaches, campgrounds, boat ramps, and some docks around 
  high tide through the weekend.

$$
1 follow-up statement
860 
WHUS42 KJAX 092057
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
457 PM EDT Sun Sep 9 2018

FLZ124-125-133-138-100600-
/O.EXT.KJAX.CF.Y.0004.000000T0000Z-180910T0600Z/
/O.CON.KJAX.RP.S.0020.000000T0000Z-180910T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
457 PM EDT Sun Sep 9 2018

...COASTAL FLOOD ADVISORY NOW IN EFFECT UNTIL 2 AM EDT MONDAY...
...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* SURF AND RIP CURRENT RISK...Rough surf and life-threatening 
  rip currents at northeast Florida beaches today.

* COASTAL FLOODING...Onshore flow and the approach of a new moon
  will keep water levels rising along the Atlantic coast,
  Intracoastal Waterway.

* TIMING...Peak water levels will occur near daily high tide 
  through Sunday. Life threatening rip currents are possible at 
  any time.

* IMPACTS...Minor tidal flooding will impact low lying areas, 
  parks, beaches, campgrounds, boat ramps, and some docks around 
  high tide through the weekend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a High Risk of life threatening 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 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.

&&

$$

FLZ033-037-038-GAZ154-166-100600-
/O.EXT.KJAX.CF.Y.0004.000000T0000Z-180910T0600Z/
Inland St. Johns-Putnam-Inland Flagler-Coastal Glynn-
Coastal Camden-
457 PM EDT Sun Sep 9 2018

...COASTAL FLOOD ADVISORY NOW IN EFFECT UNTIL 2 AM EDT MONDAY...

* COASTAL FLOODING...Onshore flow and the approach of a new moon
  will continue to raise water levels along the Atlantic coast,
  Intracoastal Waterway and the upper St. Johns River.

* TIMING...Peak water levels will occur near daily high tide 
  through Sunday.

* IMPACTS...Minor tidal flooding will impact low lying areas, 
  parks, beaches, campgrounds, boat ramps, and some docks around 
  high tide through the weekend.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 6:18 PM EDTAreal Flood AdvisoryJAXNassau87 min
Sep 9, 7:45 PM EDTAreal Flood AdvisoryJAXNassau90 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.