Alert archive / Florida / Rip Current Statements in 2012

Rip Current Statement 39, NWS Miami, FL

December 21, 2012Collier County, Florida

NWS Miami, FL issued this rip current statement at Dec 21, 2012, 5:26 AM EST for Collier County, Florida. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued
Dec 21, 2012, 5:26 AM EST (10:26 UTC)
Expired
Dec 21, 2012, 7:00 PM EST
In force
14 hr
Issued by
NWS Miami, FL

County Collier County, FL

The radar

The Miami radar (KAMX), 111 km from the middle of the area, began a volume at 10:29 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 00:00Z, 10.4 hours before the alert went out and 113 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 00:00Z on 2012-12-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 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 00:00Z on 2012-12-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.1939Sfc1 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
9 J/kg
Mixed-layer CIN
-193 J/kg
Mixed-layer LCL
905 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

638 
WHUS42 KMFL 211026
CFWMFL

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
526 AM EST FRI DEC 21 2012

FLZ069-220000-
/O.NEW.KMFL.RP.S.0039.121221T1026Z-121222T0000Z/
COASTAL COLLIER-
526 AM EST FRI DEC 21 2012

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

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A HIGH RIP
CURRENT RISK...WHICH IS IN EFFECT THROUGH THIS EVENING. 

* TIMING...RIP CURRENTS ARE EXPECTED TO BECOME HAZARDOUS TODAY DUE
  TO A COMBINATION OF STRONG ONSHORE WIND AND BUILDING SURF ALONG
  THE BEACHES OF COLLIER COUNTY.

* IMPACTS...DANGEROUS SWIMMING CONDITIONS.

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 AND THE BEACH PATROL. PAY
ATTENTION TO FLAGS AND POSTED SIGNS.

IF YOU BECOME CAUGHT IN A RIP CURRENT...DO NOT PANIC. REMAIN
CALM AND BEGIN TO SWIM PARALLEL TO SHORE. ONCE YOU ARE AWAY FROM
THE FORCE OF THE RIP CURRENT...BEGIN TO SWIM BACK TO THE BEACH.
DO NOT ATTEMPT TO SWIM DIRECTLY AGAINST A RIP CURRENT. EVEN A
STRONG SWIMMER CAN BECOME EXHAUSTED QUICKLY.

&&

$$
1 follow-up statement
348 
WHUS42 KMFL 212358
CFWMFL

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
658 PM EST FRI DEC 21 2012

FLZ069-220100-
/O.EXP.KMFL.RP.S.0039.000000T0000Z-121222T0000Z/
COASTAL COLLIER-
658 PM EST FRI DEC 21 2012

...HIGH RIP CURRENT RISK WILL EXPIRE AT 7 PM EST THIS EVENING...

WINDS ACROSS THE GULF MARINE AREAS ARE TURNING MORE NORTHERLY AND
WILL EVENTUALLY BE NORTHEASTERLY AND OFFSHORE BY EARLY TOMORROW
MORNING. AS A RESULT...SEAS ACROSS THE NEARSHORE ZONES WILL SLOWLY
DIMINISH. THEREFORE THE HIGH RISK OF RIP CURRENTS WILL BE ALLOWED
TO EXPIRE.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 21, 4:30 AM ESTWind Chill AdvisoryMFLBroward, Collier, Glades, Hendry, Miami-Dade, Palm Beach28 hr
Dec 21, 5:52 AM ESTRed Flag WarningMFLBroward, Miami-Dade, Palm Beach11 hr
Dec 21, 2:31 PM ESTFreeze WatchMFLGlades, Hendry23 hr
Dec 21, 2:31 PM ESTFreeze WarningMFLGlades, Hendry17 hr

Nearby

Rip Current Statements in Florida, 2012Every rip current statement in 2012

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.