Alert archive / Florida / Rip Current Statements in 2020

Rip Current Statement 21, NWS Melbourne, FL

April 5, 2020Volusia County, Florida

NWS Melbourne, FL issued this rip current statement at Apr 5, 2020, 3:23 AM EDT for Volusia County, Florida. It took effect at Apr 5, 2020, 8:00 AM EDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Apr 5, 2020, 3:23 AM EDT (07:23 UTC)
In effect from
Apr 5, 2020, 8:00 AM EDT
Expired
Apr 5, 2020, 8:00 PM EDT
In force
12 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 07:27 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, 7.4 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 2020-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 00:00Z on 2020-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.1939587897117Sfc1 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
5 J/kg
Mixed-layer CIN
-117 J/kg
Mixed-layer LCL
1361 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

144 
WHUS42 KMLB 050723
CFWMLB

Coastal Hazard Message
National Weather Service Melbourne FL
323 AM EDT Sun Apr 5 2020

FLZ047-054-059-064-141-147-060000-
/O.NEW.KMLB.RP.S.0021.200405T1200Z-200406T0000Z/
Southern Brevard-Indian River-St. Lucie-Martin-Coastal Volusia-
Northern Brevard-
323 AM EDT Sun Apr 5 2020

...HIGH RIP CURRENT RISK IN EFFECT FROM 8 AM THIS MORNING THROUGH
8 PM THIS EVENING...

* WHAT...Dangerous rip currents expected.

* WHERE...Southern Brevard, Indian River, St. Lucie, Martin, 
  Coastal Volusia and Northern Brevard Counties.

* WHEN...From 8 AM this morning through 8 PM this evening. While
  rip currents will be present all day, the threat will be
  greatest between 9 AM and 4 PM due to tidal effects.

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

* ADDITIONAL DETAILS...Be sure to check with local officials
  regarding any beach closures that might be in effect for your
  county or community. Some beaches may not have lifeguards
  present.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 a lifeguard is not present, do not enter
the water. 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.

&&

$$

What forecasters said that day

The local office's own words before this rip current statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Melbourne, FL wrote its last area forecast discussion before this rip current statement went out at Apr 4, 9:17 PM EDT, 6 hours 6 minutes earlier.

Area forecast discussion, Apr 4, 9:17 PM EDT, 6 hours 6 minutes before
East Central Florida Forecast Discussion
National Weather Service Melbourne FL
917 PM EDT Sat Apr 4 2020

.DISCUSSION...

Currently/overnight...The approaching Gulf disturbance will spread
considerable clouds across the area.  Winds will become light and
variable across east central FL. Low temperatures will drop to the
lower 60s across locations away from urban areas, where lows will
remain at the mid 60s as well as the coastal communities.

Sun...Tomorrow, the bulk of the aforementioned area of higher
moisture will reach the FL peninsula at the low and mid levels, with
PWAT values of an inch and a half. At the mid levels also, an
elongated area from west to east of higher vorticity will stretch
into our area. CAPE values, however, will be very low for convection
to initiate and so, showers remain in the forecast. These are
expected to reach first the northern counties of Lake and Volusia in
the late morning, and spread through the rest of east central FL in
the afternoon. Rainfall amounts could be around one tenth on an inch
in general. Temps will feel cooler due to the cloudiness as highs
near 80 are expected. With seas building and a long period swell
reaching the local beaches, a high risk for rip currents is forecast
for Sunday.

Mon-Tue...High pressure across the Mid-Atlantic coast shifts
offshore into the west Atlantic, with ridge axis gradually shifting
southward across the area. This will shift low level winds from the
E/SE Monday to the S/SW into Tuesday. There still remains some
uncertainty in overall rain chances for the area. However, models
trending drier across Volusia and northern Lake County into Monday,
with lingering low end rain chances (20-30 percent) from Orlando
area southward. Then, there still seems to be enough moisture across
the area to keep a slight chance for showers on Tuesday. However,
overall rainfall looks limited from this activity, with much of the
area remaining dry. Temperatures will warm through early next week,
with highs reaching as high as the low to mid 80s Monday to mid
(potentially upper) 80s across the interior on Tuesday.

&&

.AVIATION...
VFR tonight and through the morning hours Sunday, with increasing
cloud coverage during Sunday from the top down. Generally light
winds overnight, with an diminishing onshore wind past midnight at
the coast, returning to light tonight into Sun morning.

&&

.MARINE...
Tonight-Sun...Light winds with seas building to 3-5 ft are expected
tonight. Then on Sunday, seas will build from the northeast due to a
long period swell (13-14 seconds). Seas will increase to 5-7 feet
offshore with winds at less than 15 knots. A Small Craft Advisory
has been issued to address the offshore seas, which could get choppy
especially along the Gulf Stream. Seas within 20NM will remain 4-5
ft east of Volusia/Brevard and up to 5-6 ft east of Treasure Coast.

Sunday night-Monday...Wave guidance continues to decrease the
maximum wave heights that will make it into the coastal waters from
a distant low pressure system, but only slightly. Swells will
combine with onshore winds up to 10-15 knots to produce combined
seas up to 6 to 7 feet over the adjacent Atlantic Sunday night-
Monday, with dominant periods up to 12-13 seconds.

These long period swells will produce hazardous conditions near
inlets especially during the outgoing tide, and a Small Craft
Advisory may be needed for at least for the offshore waters.

Tuesday-Thursday...Seas are forecast to gradually subside through
late week, falling below 7 ft by Tuesday and decreasing to 3-5 feet
Wed-Thu. Winds will veer to the SE to S Tuesday as ridge axis slips
south across the waters. By Wed, the ridge axis will be south of the
waters, resulting in a W/SW (offshore) flow 10-15 knots.

&&

.FIRE WEATHER...
Persistent dry conditions will halt for a little as we expect an
increase in moisture on Sunday. Minimum RH values will be higher,
ranging from 60s along the coast and 50s across the interior.
Winds will be up to 10 mph and up to 15 mph along the barrier
islands and immediate coast south of the Cape. Isolated to scattered
showers will then be possible in the afternoon. Additional showers
are forecast on Mon but mainly for Osceola/Brevard southward, with
minimum RH values of 40-50% north of Osceola.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  65  78  63  79 /  10  40  20  10
MCO  66  80  64  84 /  10  30  20  20
MLB  65  78  65  78 /  10  40  30  20
VRB  64  80  63  79 /  10  40  30  20
LEE  64  80  63  85 /  10  30  20  20
SFB  64  79  62  83 /  10  30  20  10
ORL  66  80  64  83 /  10  30  20  20
FPR  63  81  64  79 /  10  40  30  30

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...None.
AM...Small Craft Advisory from 10 AM Sunday to 6 AM EDT Monday for
     Flagler Beach to Volusia-Brevard County Line 20-60 nm-
     Sebastian Inlet to Jupiter Inlet 20-60 nm-Volusia-Brevard
     County Line to Sebastian Inlet 20-60 nm.

&&

Negron/Weitlich
Hazardous weather outlook, Apr 4, 8:05 PM EDT, 7 hours 18 minutes before
Hazardous Weather Outlook
National Weather Service Melbourne FL
805 PM EDT Sat Apr 4 2020

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-051200-
Flagler Beach to Volusia-Brevard County Line 0-20 nm-Volusia-
Brevard County Line to Sebastian Inlet 0-20 nm-
Sebastian Inlet to Jupiter Inlet 0-20 nm-Flagler Beach to Volusia-
Brevard County Line 20-60 nm-Volusia-
Brevard County Line to Sebastian Inlet 20-60 nm-
Sebastian Inlet to Jupiter Inlet 20-60 nm-Inland Volusia-
Northern Lake-Orange-Seminole-Southern Brevard-Osceola-
Indian River-Okeechobee-St. Lucie-Martin-Coastal Volusia-
Southern Lake-Northern Brevard-
805 PM EDT Sat Apr 4 2020

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TONIGHT.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

Hazardous boating conditions will develop Sunday morning and last
into early next week across the Atlantic waters as a long period
swell builds in. These swells will maintain a high to extreme
risk of rip currents and building surf at area beaches.

Relative humidities will increase above critical thresholds Sunday
through mid week. However, high fire danger will return by the
middle of this week due to limited rainfall chances, continued
dry vegetation, and increasing temperatures to near record highs.

.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed tonight.

Rodriguez

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 8:45 AM EDTSpecial Marine WarningMLB60 min
Apr 5, 9:05 AM EDTSpecial Marine WarningMLB55 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.