Alert archive / Florida / Rip Current Statements in 2018

Rip Current Statement 16, NWS Miami, FL

March 21, 2018Collier County, Florida

NWS Miami, FL issued this rip current statement at Mar 21, 2018, 3:37 AM EDT for Collier County, Florida. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued
Mar 21, 2018, 3:37 AM EDT (07:37 UTC)
Expired
Mar 21, 2018, 8:46 PM EDT
In force
17 hr
Issued by
NWS Miami, FL

County Collier County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 7.6 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 2018-03-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 625 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 2018-03-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.1939587897Sfc1 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
625 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1124 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.5

Open this sounding in Storm Lab

The text

As transmitted.

727 
WHUS42 KMFL 210737
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Miami FL
337 AM EDT Wed Mar 21 2018

FLZ069-220000-
/O.NEW.KMFL.RP.S.0016.180321T0737Z-180322T0000Z/
Coastal Collier-
337 AM EDT Wed Mar 21 2018

...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...Through this evening.

* IMPACTS...Strong rip currents will be hazardous for those in the
  surf zone along Gulf beaches. 

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.

&&

$$


http://www.weather.gov/miami
2 follow-up statements
332 
WHUS42 KMFL 212000
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Miami FL
400 PM EDT Wed Mar 21 2018

FLZ069-220300-
/O.EXT.KMFL.RP.S.0016.000000T0000Z-180322T0300Z/
Coastal Collier-
400 PM EDT Wed Mar 21 2018

...HIGH RIP CURRENT RISK NOW IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

* TIMING...Through this evening.

* IMPACTS...Strong rip currents will be hazardous for those in 
  the surf zone along Gulf beaches. 

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.

&&

$$


http://www.weather.gov/miami
753 
WHUS42 KMFL 220046
CFWMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Miami FL
846 PM EDT Wed Mar 21 2018

FLZ069-220200-
/O.CAN.KMFL.RP.S.0016.000000T0000Z-180322T0300Z/
Coastal Collier-
846 PM EDT Wed Mar 21 2018

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

The National Weather Service in Miami has cancelled the High Rip
Current Risk. 


$$


http://www.weather.gov/miami

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 20, 8:12 PM EDTSpecial Weather StatementMFLCollier33 min
Mar 20, 8:22 PM EDTSevere Thunderstorm WarningMFLCollier23 min
Mar 20, 8:48 PM EDTSpecial Weather StatementMFLCollier57 min
Mar 20, 9:48 PM EDTSpecial Weather StatementMFLMonroe57 min
Mar 21, 3:42 AM EDTRed Flag WarningMFLBroward, Miami-Dade, Palm Beach15 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.