Monday, April19, 2021
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Marine Weather and Tides
Naples, FL

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:58AMSunset 7:54PM Monday April 19, 2021 5:30 PM EDT (21:30 UTC) Moonrise 11:24AMMoonset 12:47AM Illumination 54% Phase: First Quarter Moon; Moon at 8 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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GMZ656 Coastal Waters From Chokoloskee To Bonita Beach Fl Out 20 Nm- Coastal Waters From East Cape Sable To Chokoloskee Fl Out 20 Nm- 405 Pm Edt Mon Apr 19 2021
Tonight..West winds 5 to 10 knots becoming south 5 to 15 knots after midnight. Seas around 2 feet. Period 6 seconds. Bay and inland waters a light chop. Chance of showers in the evening. Chance of Thunderstorms through the night. Showers likely after midnight.
Tuesday..South southwest winds 10 to 15 knots with gusts to around 20 knots. Seas around 2 feet. Period 3 seconds. Bay and inland waters a moderate chop. Showers likely and chance of Thunderstorms.
Tuesday night..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. Chance of Thunderstorms in the evening. Showers likely through the night. Slight chance of Thunderstorms after midnight.
Wednesday..West northwest winds around 10 knots. Seas around 2 feet. Bay and inland waters a light chop. Showers likely and slight chance of Thunderstorms in the morning, then chance of showers and Thunderstorms in the afternoon.
Wednesday night..North winds around 10 knots nearshore and north 10 to 15 knots offshore. Seas around 2 feet. Bay and inland waters a light chop. Slight chance of showers.
Thursday..North winds 5 to 15 knots. Seas around 2 feet. Bay and inland waters a light chop. Slight chance of showers through the day. Slight chance of Thunderstorms in the afternoon.
Thursday night..East northeast winds 10 to 15 knots with gusts to around 20 knots. Seas around 2 feet. Bay and inland waters a light chop.
Friday..Southeast winds 10 to 15 knots with gusts to around 20 knots. Seas around 2 feet. Bay and inland waters a light chop.
Friday night..East southeast winds 10 to 15 knots with gusts to around 20 knots. Seas around 2 feet. Bay and inland waters a light chop.
Saturday..South southeast winds 10 to 15 knots with gusts to around 20 knots. Seas around 2 feet. Bay and inland waters a light chop.
GMZ600 Synopsis For Pascagoula Ms To Okaloosa Walton County Line Fl Out 60 Nm Including Major Area Bays And Sounds- 349 Pm Cdt Mon Apr 19 2021
Synopsis..A light to occasionally moderate offshore flow will develop over the marine area tonight, with a more light and variable flow expected on Tuesday as high pressure builds in from the west. Moderate to strong offshore flow returns Wednesday into early Thursday morning following the passage of a cold front. An easterly to southeasterly flow is expected Thursday into Friday, then southerly by Saturday as the next system approaches from the west.


7 Day Forecast for Marine Location Near Naples, FL
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location: 26.14, -81.79     debug


Area Discussion for - Miami-South Florida, FL
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FXUS62 KMFL 191846 AFDMFL

Area Forecast Discussion National Weather Service Miami FL 246 PM EDT Mon Apr 19 2021

. Strong to Severe Thunderstorms Possible This Afternoon . . Unsettled pattern remains over the next few days .

MESOSCALE UPDATE (This Afternoon and Evening). A stout 500 hPa short-wave impulse is allowing for a low-level mass response resulting in enhanced low-level convergence along and ahead of a stalled stationary boundary across South-Central Florida. Efficient transport of moisture via S/SW 1000-850 hPa flow of 15-25 kt will allow for an air mass characterized by high theta-e values to be transported along areas of enhanced localized convergence ahead of the aforementioned frontal boundary. This will allow for ML CAPE values of 2000-2500 J/kg to be realized across most of the CWA. An expansive cloud canopy associated with a complex of organized thunderstorms will limit the extent of instability where cooler outflow and cloud debris exist, however areas near Lake Okeechobee, particularly Glades, Hendry, and Palm Beach Counties appear to be within the greatest risk area for isolated strong to severe thunderstorms. Furthermore, the orientation of horizontal convective rolls and modest 0-6 km deep-layer shear of roughly 35-40 kt may allow for discrete supercells to form ahead of the primary convective complex associated with the larger synoptic forcing. Given the aforementioned setup and unfolding scenario, strong/severe storms capable of producing isolated damaging wind gusts, occasional/frequent lightning, and small hail are all possible with any storms that are able to take advantage of a favorable environment. An isolated brief tornado also cannot be ruled out.

SHORT TERM (Tonight through Tuesday). With the surface frontal boundary lingering, passing mid-level shortwave troughs and diurnal heating cycles will lead to surges and eventual erosion in convective activity. A lull late this evening into the early overnight is possible but another flare up in convection cannot be ruled out, particularly if a southerly boundary from Cuba survives a transit across the straits of Florida.

The moisture profile will continue to increase, particularly around Lake Okeechobee closer to the boundary where today's repeated rainfall could end up being the start of a heavy rainfall event that could last through at least Tuesday. Precipitable water values could reach close to 1.75 to 2 inches in these areas, which would high for this time of year.

The additional convection and the proximity of the front will enable increased cloud cover which will help keep temperatures a few degrees cooler with mid to upper 80s across the area. Showers and storms remain in the forecast with cool temperatures aloft (-8 to -9 deg C at 500 mb) remaining through Tuesday. With that, the concern for strong to severe thunderstorms continues with the primary concerns being damaging winds, hail, excessive rainfall, and tornadic activity.

LONG TERM (Tuesday Night through Monday). An exiting mid-level shortwave on Tuesday evening will allow for another lull in convection to start the long term but the presence of the surface frontal boundary will continue into Thursday when guidance suggests that a slot of drier air will attempt to push in behind the front as it sags southward over the southern part of the peninsula. This may allow some northern portions of the area, such as the Lake Okeechobee region, to have the potential of a respite from the moisture but the relative lack of available forcing around this time may also help clamp down on convection compared to earlier days.

On Friday, the next system of interest to our region emerges into the central United States. With this system, a mid-level trough will push eastward with an associated surface frontal boundary pushing eastward across the Gulf towards Florida for the weekend. There is still some uncertainty with the extended period, the wet and unsettled trend appears to be the main story for the next 7 days.

AVIATION(18Z TAFS). A band of convection has set up just north of PBI this afternoon. Additional convection will be possible across the area through the afternoon before a brief break this evening. More showers and storms may develop later this evening across far southern portions of FL. Kept tempos up north closer to the afternoon convection and continued VCs overnight generally for APF and TMB. Southwesterly winds will decrease shortly after sunset but ramp back up during the daylight hours on Tuesday.

MARINE. A cold front moving into south central Florida will bring showers and thunderstorms to the local waters through the middle of the week. Winds may reach cautionary levels at times, mainly over the Atlantic waters. Strong to severe thunderstorms may develop over the coastal waters during the next couple of days, bringing brief periods of gusty winds and rough seas. The front will linger around the region through much of the week.

BEACHES. A moderate rip current risk continues today for the Palm Beaches. This enhanced risk might continue on Tuesday as a small residual ENE swell lingers over the northern Atlantic marine zones off Palm Beach County.

PRELIMINARY POINT TEMPS/POPS. Miami 75 88 75 87 / 30 30 40 70 West Kendall 74 89 73 89 / 30 20 40 60 Opa-Locka 75 89 73 87 / 30 30 40 70 Homestead 73 87 73 87 / 30 20 40 50 Fort Lauderdale 75 88 74 86 / 40 30 40 70 N Ft Lauderdale 74 88 74 85 / 40 40 50 70 Pembroke Pines 75 88 73 87 / 40 30 40 70 West Palm Beach 71 87 70 83 / 50 60 60 80 Boca Raton 73 87 73 85 / 50 40 50 80 Naples 72 83 72 82 / 60 60 70 70

MFL WATCHES/WARNINGS/ADVISORIES. FL . None. AM . None. GM . None.

Mesoscale Update . SRB Tonight/Tuesday and Marine . RAG Tuesday Night through Monday . RAG Aviation . Frye

Visit us at weather.gov/miami

Follow us on Facebook and Twitter at: www.facebook.com/nwsmiami www.twitter.com/nwsmiami


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NPSF1 - 8725110 - Naples, FL 1 mi43 min SW 12 G 13 85°F 83°F1012.8 hPa
RKXF1 - Rookery Bay Reserve, FL 8 mi106 min W 12 83°F 1013 hPa78°F
BGCF1 - Big Carlos Pass, FL 19 mi97 min W 2.9 G 4.1 75°F
FMRF1 - 8725520 - Fort Myers, FL 35 mi43 min SW 2.9 G 6 80°F 83°F1012.3 hPa
WPLF1 - Watson Place, FL 41 mi91 min 84°F
CNBF1 - Cannon Bay, FL 44 mi91 min 85°F

Wind History for Naples, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Naples, Naples Municipal Airport, FL1 mi38 minSSW 117.00 miMostly Cloudy81°F76°F85%1011.7 hPa

Link to 5 minute data for KAPF

Wind History from APF (wind in knots)
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Last 24hrS11SW10S5S5S5S5S6S7S7S12S8S11S12S11S15SW13SW13SW12SW14SW15
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1 day agoSW11SW10SW7SW8SW4SW6SW4SW3CalmCalmCalmS4SE3NE3SE4SE46SW9S14SW13S14SW14SW12SW10
2 days agoSW9SW7SW7S6S4S4S3CalmS4S4S6S5S7S4SW6SW10SW12SW12SW13SW15SW13SW14SW13SW13
G19

Tide / Current Tables for Naples, Naples Bay, north end, Florida
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Naples
Click for Map
Mon -- 12:25 AM EDT     0.27 feet Low Tide
Mon -- 01:46 AM EDT     Moonset
Mon -- 06:59 AM EDT     Sunrise
Mon -- 07:50 AM EDT     2.00 feet High Tide
Mon -- 11:55 AM EDT     1.65 feet Low Tide
Mon -- 12:24 PM EDT     Moonrise
Mon -- 05:05 PM EDT     2.44 feet High Tide
Mon -- 07:52 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.30.50.81.11.51.8221.91.81.71.71.71.92.12.32.42.42.21.91.51.10.8

Tide / Current Tables for Marco, Big Marco River, Florida (2)
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Marco
Click for Map
Mon -- 12:28 AM EDT     0.23 feet Low Tide
Mon -- 01:46 AM EDT     Moonset
Mon -- 06:59 AM EDT     Sunrise
Mon -- 08:03 AM EDT     1.70 feet High Tide
Mon -- 11:58 AM EDT     1.41 feet Low Tide
Mon -- 12:24 PM EDT     Moonrise
Mon -- 05:18 PM EDT     2.07 feet High Tide
Mon -- 07:52 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.30.40.60.91.21.51.61.71.71.61.41.41.51.61.822.121.91.61.310.7

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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