Alert archive / Florida / Rip Current Statements in 2018

Rip Current Statement 24, NWS Jacksonville, FL

September 17, 2018Duval County, Flagler County, Nassau County, Florida

NWS Jacksonville, FL issued this rip current statement at Sep 17, 2018, 7:28 AM EDT for Duval County, Flagler County, Nassau County, Florida. It took effect at Sep 17, 2018, 8:00 AM EDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Sep 17, 2018, 7:28 AM EDT (11:28 UTC)
In effect from
Sep 17, 2018, 8:00 AM EDT
Expired
Sep 17, 2018, 8:00 PM EDT
In force
12 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 11:28 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, 11.5 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 2018-09-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2174 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 2018-09-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
2174 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1190 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
30 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.

426 
WHUS42 KJAX 171128
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
728 AM EDT Mon Sep 17 2018

FLZ124-125-133-138-171930-
/O.NEW.KJAX.RP.S.0024.180917T1200Z-180918T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
728 AM EDT Mon Sep 17 2018

...HIGH RIP CURRENT RISK IN EFFECT FOR ALL NE FLORIDA BEACHES 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...3 to 4 feet and high risk of rip
  currents. 

* TIMING...Until Monday 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.

&&

$$
2 follow-up statements
732 
WHUS42 KJAX 171605
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
1205 PM EDT Mon Sep 17 2018


FLZ124-125-133-138-180000-
/O.CON.KJAX.RP.S.0024.000000T0000Z-180918T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
1205 PM EDT Mon Sep 17 2018

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

* SURF AND RIP CURRENT RISK...3 to 4 feet and high risk of rip 
  currents.

* TIMING...Until Monday 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.

&&

$$
847 
WHUS42 KJAX 180000
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
800 PM EDT Mon Sep 17 2018


FLZ124-125-133-138-180100-
/O.EXP.KJAX.RP.S.0024.000000T0000Z-180918T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
800 PM EDT Mon Sep 17 2018

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


$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 16, 9:57 PM EDTSpecial Marine WarningJAX93 min
Sep 16, 11:47 PM EDTSpecial Marine WarningJAX58 min
Sep 17, 12:58 AM EDTSpecial Marine WarningJAX62 min
Sep 17, 2:03 AM EDTSpecial Marine WarningJAX57 min
Sep 17, 4:18 PM EDTSpecial Weather StatementJAXNassau27 min
Sep 17, 4:50 PM EDTSpecial Weather StatementJAXHamilton40 min
Sep 17, 5:03 PM EDTAreal Flood AdvisoryJAXHamilton, Suwannee117 min
Sep 17, 5:26 PM EDTSpecial Weather StatementJAXColumbia34 min
Sep 17, 5:59 PM EDTSpecial Weather StatementJAXSuwannee46 min
Sep 17, 6:41 PM EDTSpecial Weather StatementJAXAlachua34 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.