Alert archive / Florida / Rip Current Statements in 2020

Rip Current Statement 38, NWS Jacksonville, FL

December 24, 2020Duval County, Flagler County, Nassau County, Florida

NWS Jacksonville, FL issued this rip current statement at Dec 24, 2020, 3:34 AM EST for Duval County, Flagler County, Nassau County, Florida. It took effect at Dec 24, 2020, 10:00 AM EST. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Dec 24, 2020, 3:34 AM EST (08:34 UTC)
In effect from
Dec 24, 2020, 10:00 AM EST
Expired
Dec 24, 2020, 1:48 PM EST
In force
4 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 08:36 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, 8.6 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 2020-12-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2020-12-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1109 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

860 
WHUS42 KJAX 240834
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
334 AM EST Thu Dec 24 2020

FLZ124-125-133-138-241500-
/O.NEW.KJAX.RP.S.0038.201224T1500Z-201225T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
334 AM EST Thu Dec 24 2020

...HIGH RIP CURRENT RISK IN EFFECT FROM 10 AM EST THIS MORNING
THROUGH THIS EVENING...

* WHAT...Dangerous rip currents expected.

* WHERE...Northeast Florida Beaches.

* WHEN...From 10 AM EST this morning through this evening.

* 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.

&&

$$
1 follow-up statement
219 
WHUS42 KJAX 241848
CFWJAX

Coastal Hazard Message
National Weather Service Jacksonville FL
148 PM EST Thu Dec 24 2020

FLZ124-125-133-138-242000-
/O.CAN.KJAX.RP.S.0038.000000T0000Z-201225T0000Z/
Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler-
148 PM EST Thu Dec 24 2020

...HIGH RIP CURRENT RISK IS CANCELLED...

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 24, 3:32 AM ESTGale WarningJAX35 hr
Dec 24, 3:36 AM ESTFreeze WatchJAXDuval, Flagler, Nassau23 hr
Dec 24, 3:36 AM ESTHard Freeze WatchJAXAlachua, Baker, Bradford, Gilchrist, Marion, Nassau and 2 more23 hr
Dec 24, 1:41 PM ESTWind Chill AdvisoryJAXAlachua, Baker, Bradford, Duval, Flagler, Gilchrist and 4 more19 hr
Dec 24, 1:50 PM ESTFreeze WarningJAXAlachua, Baker, Bradford, Gilchrist, Nassau, Suwannee and 1 more19 hr
Dec 24, 4:02 PM ESTSevere Thunderstorm WarningJAXHamilton43 min
Dec 24, 4:18 PM ESTSpecial Weather StatementJAXSuwannee42 min
Dec 24, 4:39 PM ESTSevere Thunderstorm WarningJAXBaker, Columbia, Hamilton, Suwannee66 min
Dec 24, 5:24 PM ESTSpecial Weather StatementJAXAlachua, Gilchrist, Union51 min
Dec 24, 5:42 PM ESTSevere Thunderstorm WarningJAXAlachua, Baker, Bradford, Clay, Columbia, Duval and 3 more48 min
Dec 24, 6:08 PM ESTSevere Thunderstorm WarningJAXAlachua, Putnam37 min
Dec 24, 6:19 PM ESTSpecial Weather StatementJAXMarion41 min
Dec 24, 6:28 PM ESTSevere Thunderstorm WarningJAXBaker, Bradford, Clay, Duval, Nassau, Putnam and 1 more62 min
Dec 24, 6:31 PM ESTSpecial Marine WarningJAX89 min
Dec 24, 6:48 PM ESTSpecial Weather StatementJAXPutnam42 min

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.