Alert archive / Florida / Rip Current Statements in 2017

Rip Current Statement 29, NWS Miami, FL

September 11, 20174 counties in Florida

NWS Miami, FL issued this rip current statement at Sep 11, 2017, 11:31 AM EDT for 4 counties in Florida. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued
Sep 11, 2017, 11:31 AM EDT (15:31 UTC)
Expired
Sep 12, 2017, 8:00 AM EDT
In force
20 hr
Issued by
NWS Miami, FL

Counties Broward County, FL, Collier County, FL, Miami-Dade County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 64 km from the middle of the area, began a volume at 15:33 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

Miami, FL (KMFL), launched 12:00Z, 3.5 hours before the alert went out and 53 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, Miami, FL at 12:00Z on 2017-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 414 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, Miami, FL at 12:00Z on 2017-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 170 square meters per square second.193958Sfc1 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
414 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
678 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
170 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.2

Open this sounding in Storm Lab

The text

As transmitted.

336 
WHUS42 KMFL 111531
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
1131 AM EDT MON SEP 11 2017

...FLOODING STILL LINGERING IN COASTAL SOUTH FLORIDA...
...HIGH RISK OF RIP CURRENTS TODAY...

FLZ069-168-172-173-120000-
/O.NEW.KMFL.RP.S.0029.170911T1531Z-170912T0000Z/
/O.CON.KMFL.CF.Y.0001.000000T0000Z-170911T2100Z/
COASTAL COLLIER-COASTAL PALM BEACH-COASTAL BROWARD-COASTAL MIAMI-
DADE-
1131 AM EDT MON SEP 11 2017

...HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A HIGH RIP
CURRENT RISK AND COASTAL FLOOD ADVISORY, WHICH IS IN EFFECT UNTIL
8 PM EDT THIS EVENING.

* COASTAL FLOODING...LINGERING FLOOD WATERS OF UP TO 2 FEET 
  ABOVE GROUND LEVEL. 

* COASTAL FLOODING TIMING...THROUGH LATE AFTERNOON.

* COASTAL FLOODING IMPACTS...FLOODING OF STREETS IN BARRIER 
  ISLANDS AND NEAR THE INTRACOASTAL WATERWAY COULD CAUSE LOCAL 
  STREET CLOSURES. 

* RIP CURRENT TIMING...THROUGH THIS EVENING.

* RIP CURRENT IMPACTS...STRONG AND DANGEROUS RIP CURRENTS ARE
  FORECAST ALONG THE BEACHES OF SOUTH FLORIDA, WHICH WILL BE 
  HAZARDOUS FOR THOSE IN THE SURF ZONE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A COASTAL FLOOD ADVISORY INDICATES THAT LINGERING STORM SURGE AND
TIDES WILL COMBINE TO GENERATE FLOODING OF TYPICALLY VULNERABLE
LOW AREAS ALONG THE SHORE.

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 GROINS, 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.

&&

$$

FLZ075-174-112100-
/O.CON.KMFL.CF.Y.0001.000000T0000Z-170911T2100Z/
MAINLAND MONROE-FAR SOUTH MIAMI-DADE-
1131 AM EDT MON SEP 11 2017

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS
AFTERNOON...

* COASTAL FLOODING...LINGERING FLOOD WATERS OF UP TO 2 FEET 
  ABOVE GROUND LEVEL. 

* COASTAL FLOODING TIMING...THROUGH LATE AFTERNOON.

* COASTAL FLOODING IMPACTS...FLOODING OF STREETS IN BARRIER
  ISLANDS AND NEAR THE INTRACOASTAL WATERWAY COULD CAUSE LOCAL
  STREET CLOSURES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A COASTAL FLOOD ADVISORY INDICATES THAT LINGERING STORM SURGE AND
TIDES WILL COMBINE TO GENERATE FLOODING OF TYPICALLY VULNERABLE
LOW AREAS ALONG THE SHORE.

&&

$$


HTTP://WWW.WEATHER.GOV/MIAMI
1 follow-up statement
911 
WHUS42 KMFL 112119
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
519 PM EDT MON SEP 11 2017

...HIGH RISK OF RIP CURRENTS THROUGH TUESDAY MORNING...

FLZ069-168-172-173-121200-
/O.EXP.KMFL.CF.Y.0001.000000T0000Z-170911T2100Z/
/O.EXT.KMFL.RP.S.0029.000000T0000Z-170912T1200Z/
COASTAL COLLIER-COASTAL PALM BEACH-COASTAL BROWARD-COASTAL MIAMI-
DADE-
519 PM EDT MON SEP 11 2017

...HIGH RIP CURRENT RISK NOW IN EFFECT THROUGH TUESDAY MORNING...
...COASTAL FLOOD ADVISORY HAS EXPIRED...

* RIP CURRENT TIMING...THROUGH TUESDAY MORNING.

* RIP CURRENT IMPACTS...STRONG AND DANGEROUS RIP CURRENTS ARE 
  FORECAST ALONG THE BEACHES OF SOUTH FLORIDA, WHICH WILL BE 
  HAZARDOUS FOR THOSE IN THE SURF ZONE. 

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 GROINS, 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.

&&

$$

FLZ075-174-112230-
/O.EXP.KMFL.CF.Y.0001.000000T0000Z-170911T2100Z/
MAINLAND MONROE-FAR SOUTH MIAMI-DADE-
519 PM EDT MON SEP 11 2017

...COASTAL FLOOD ADVISORY HAS EXPIRED...

COASTAL FLOODING IS NO LONGER EXPECTED.

$$
GREGORIA

HTTP://WWW.WEATHER.GOV/MIAMI

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 8:11 PM EDTSpecial Marine WarningMFL34 min
Sep 10, 8:30 PM EDTAreal Flood WarningMFLGlades, Hendry6 hr
Sep 10, 8:52 PM EDTSpecial Marine WarningMFL38 min
Sep 10, 9:45 PM EDTSpecial Marine WarningMFL45 min
Sep 10, 10:52 PM EDTSpecial Marine WarningMFL53 min
Sep 10, 11:16 PM EDTTropical Storm WarningMFLBroward, Collier, Glades, Hendry, Miami-Dade, Monroe and 1 more12 hr
Sep 11, 5:42 AM EDTSmall Craft AdvisoryMFL26 hr
Sep 11, 7:53 AM EDTCoastal Flood AdvisoryMFLBroward, Collier, Miami-Dade, Monroe, Palm Beach9 hr

Nearby

Rip Current Statements in Florida, 2017Every rip current statement in 2017

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.