Alert archive / Florida / Rip Current Statements in 2020

Rip Current Statement 2, NWS Jacksonville, FL

January 17, 2020Duval County, Flagler County, Nassau County, Florida

NWS Jacksonville, FL issued this rip current statement at Jan 17, 2020, 3:53 AM EST for Duval County, Flagler County, Nassau County, Florida. It took effect at Jan 17, 2020, 7:00 AM EST. It was in force for 45 hr.

The area

The counties it named.

The facts

Issued
Jan 17, 2020, 3:53 AM EST (08:53 UTC)
In effect from
Jan 17, 2020, 7:00 AM EST
Expired
Jan 19, 2020, 4:00 AM EST
In force
45 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 08:54 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, 8.9 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 2020-01-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 104 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 2020-01-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.19395878Sfc1 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
104 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
1101 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

371 
WHUS42 KJAX 170853
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
353 AM EST Fri Jan 17 2020

FLZ124-125-133-138-172100-
/O.NEW.KJAX.SU.Y.0001.200117T1200Z-200118T0900Z/
/O.NEW.KJAX.RP.S.0002.200117T1200Z-200118T0900Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
353 AM EST Fri Jan 17 2020

...HIGH SURF ADVISORY IN EFFECT FROM 7 AM THIS MORNING TO 4 AM
EST SATURDAY...
...HIGH RIP CURRENT RISK IN EFFECT FROM 7 AM EST THIS MORNING
THROUGH LATE TONIGHT...

* WHAT...For the High Surf Advisory, large breaking waves of 5 to
  7 feet. For the High Rip Current Risk, dangerous rip currents 
  expected.

* WHERE...Northeast Florida Beaches.

* WHEN...For the High Surf Advisory, from 7 AM this morning to 4 
  AM EST Saturday. For the High Rip Current Risk, from 7 AM EST 
  this morning through late tonight.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$
3 follow-up statements
298 
WHUS42 KJAX 172011
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
311 PM EST Fri Jan 17 2020

FLZ124-125-133-138-180900-
/O.CON.KJAX.SU.Y.0001.000000T0000Z-200118T0900Z/
/O.CON.KJAX.RP.S.0002.000000T0000Z-200118T0900Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
311 PM EST Fri Jan 17 2020

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST SATURDAY...
...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH LATE TONIGHT...

* WHAT...For the High Surf Advisory, large breaking waves of 5 to
  7 feet. For the High Rip Current Risk, dangerous rip currents.

* WHERE...Northeast Florida Beaches.

* WHEN...For the High Surf Advisory, until 4 AM EST Saturday. 
  For the High Rip Current Risk, through late tonight.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

If caught in a rip current, relax and float. Don't swim against 
the current. If able, swim in a direction following the shoreline.
If unable to escape, face the shore and call or wave for help.

&&

$$
717 
WHUS42 KJAX 180850
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
350 AM EST Sat Jan 18 2020

FLZ124-125-133-138-182100-
/O.CAN.KJAX.SU.Y.0001.000000T0000Z-200118T0900Z/
/O.EXT.KJAX.RP.S.0002.000000T0000Z-200118T2100Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
350 AM EST Sat Jan 18 2020

...HIGH RIP CURRENT RISK NOW IN EFFECT THROUGH THIS AFTERNOON...

* WHAT...Dangerous rip currents and rough surf of 4 to 6 feet.

* WHERE...Northeast Florida Beaches.

* WHEN...Through this afternoon.

* IMPACTS...Rip currents can sweep even the best swimmers away 
  from shore into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$
208 
WHUS42 KJAX 181944
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
244 PM EST Sat Jan 18 2020

FLZ124-125-133-138-190900-
/O.EXT.KJAX.RP.S.0002.000000T0000Z-200119T0900Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
244 PM EST Sat Jan 18 2020

...HIGH RIP CURRENT RISK NOW IN EFFECT THROUGH LATE TONIGHT...

* WHAT...Dangerous rip currents.

* WHERE...Northeast Florida Beaches.

* WHEN...Through late tonight.

* IMPACTS...Rip currents can sweep even the best swimmers away 
  from shore into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 17, 3:48 AM ESTWind AdvisoryJAXDuval, Flagler, Nassau15 hr
Jan 17, 3:53 AM ESTHigh Surf AdvisoryJAXDuval, Flagler, Nassau24 hr

Nearby

Rip Current Statements in Florida, 2020Every rip current statement in 2020

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.