Alert archive / Florida / Rip Current Statements in 2018

Rip Current Statement 39, NWS Melbourne, FL

November 24, 2018Volusia County, Florida

NWS Melbourne, FL issued this rip current statement at Nov 24, 2018, 2:38 AM EST for Volusia County, Florida. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
Nov 24, 2018, 2:38 AM EST (07:38 UTC)
Expired
Nov 24, 2018, 7:00 PM EST
In force
16 hr
Issued by
NWS Melbourne, FL

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 116 km from the middle of the area, began a volume at 07:39 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

Cape Canaveral, FL (KXMR), launched 00:00Z, 7.6 hours before the alert went out and 91 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, Cape Canaveral, FL at 00:00Z on 2018-11-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 187 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, Cape Canaveral, FL at 00:00Z on 2018-11-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
187 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
722 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

693 
WHUS42 KMLB 240738
CFWMLB

Coastal Hazard Message
National Weather Service Melbourne FL
238 AM EST Sat Nov 24 2018

...VERY LARGE SWELLS ROLLING INTO THE CENTRAL FLORIDA ATLANTIC 
COAST THIS MORNING...

Data from NOAA buoy 41009 indicates very large northeast swells of
up to 15 feet have developed over the local Atlantic waters. These
very large swells will produce life threatening surf conditions
today.

FLZ047-054-059-064-141-147-250000-
/O.NEW.KMLB.SU.Y.0007.181124T0738Z-181124T1500Z/
/O.NEW.KMLB.RP.S.0039.181124T0738Z-181125T0000Z/
Southern Brevard County-Indian River-St. Lucie-Martin-
Coastal Volusia County-Northern Brevard County-
238 AM EST Sat Nov 24 2018

...HIGH SURF ADVISORY IN EFFECT UNTIL 10 AM THIS MORNING...

...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...

The National Weather Service in Melbourne has issued a High Surf
Advisory, which is in effect until 10 AM EST this morning. A High
Rip Current Risk has also been issued. This High Rip Current Risk
is in effect through this evening. 

* WAVES AND SURF...Very large ocean swells of 12 to 15 feet will
  produce large breaking waves of 7 to 10 feet. Numerous strong
  and dangerous Rip Currents will be present. The combination of
  swells and high astronomical tides will result in water runup to
  the dune line, along with beach erosion during the upcoming high
  tide.

* TIMING...Water runup to the dune line along with beach erosion 
  is likely during the upcoming high tide cycle centered around 
  830 AM. The threat for Rip Currents will be present all day, but
  be especially high during the outgoing tide this afternoon. 

* IMPACTS...Large swells could easily knock you down and make you
  more susceptible to becoming caught in the strong seaward pull
  of a Rip Current. Venturing into the surf is not recommended 
  today.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Advisory means that high surf will affect beaches in
the advisory area...producing localized beach erosion and
dangerous swimming conditions.

There is a high risk of 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 jetties and
piers. Heed the advice of lifeguards...beach patrol flags and
signs.

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
246 
WHUS42 KMLB 241536
CFWMLB

Coastal Hazard Message
National Weather Service Melbourne FL
1036 AM EST Sat Nov 24 2018


FLZ047-054-059-064-141-147-250000-
/O.CON.KMLB.RP.S.0039.000000T0000Z-181125T0000Z/
Southern Brevard County-Indian River-St. Lucie-Martin-
Coastal Volusia County-Northern Brevard County-
1036 AM EST Sat Nov 24 2018

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

A High Rip Current Risk remains in effect through this evening.

* TIMING...The threat for rip currents will be present all day,
  but will be especially high during the outgoing tide this 
  afternoon. 

* IMPACTS...Life threatening rip currents are likely today. 
  Always swim near a lifeguard, and never swim alone!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

There is a high risk of 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 jetties and
piers. Heed the advice of lifeguards, beach patrol flags and 
signs.

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 Melbourne, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 24, 2:38 AM ESTHigh Surf AdvisoryMLBVolusia7 hr
Nov 24, 2:50 AM ESTSmall Craft Advisory for Hazardous SeasMLB19 hr

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.