Marine Weather and Tide Forecast for Marco Island, FL
May 18, 2024 10:31 AM EDT (14:31 UTC) Change Location
 | Sunrise 6:37 AM Sunset 8:09 PM Moonrise 3:00 PM Moonset 2:41 AM |
GMZ656 Coastal Waters From Chokoloskee To Bonita Beach Fl Out 20 Nm- Coastal Waters From East Cape Sable To Chokoloskee Fl Out 20 Nm- Waters From Chokoloskee To Bonita Beach Fl From 20 To 60 Nm- 1000 Am Edt Sat May 18 2024
Rest of today - S sw winds 5 to 10 kt. Seas 2 ft or less near shore and 2 to 3 ft well offshore. Wave detail: sw 2 ft at 6 seconds. Bay and inland waters a light chop.
Tonight - S sw winds 5 to 10 kt. Seas 2 ft or less near shore and 2 to 3 ft well offshore. Wave detail: sw 2 ft at 6 seconds. Bay and inland waters a light chop. A slight chance of showers late in the evening. A slight chance of tstms through the night. A chance of showers after midnight.
Sun - W winds 5 to 10 kt. Seas 2 ft or less near shore and around 3 ft well offshore. Wave detail: sw 2 ft at 6 seconds. Bay and inland waters a light chop. A slight chance of tstms in the morning. A chance of showers. A chance of tstms.
Sun night - W winds 5 kt. Seas 2 ft or less near shore and around 3 ft well offshore. Wave detail: W sw 2 ft at 5 seconds. Bay and inland waters smooth. A chance of showers late in the evening. A chance of tstms through the night. Showers likely after midnight.
Mon - W winds 5 to 10 kt. Seas 2 ft or less near shore and 2 to 3 ft well offshore. Wave detail: W sw 2 ft at 5 seconds. Bay and inland waters a light chop. A chance of showers and tstms.
Mon night - N nw winds 5 to 10 kt becoming N ne in the morning. Seas 2 ft or less nearshore and 2 to 3 ft offshore. Wave detail: nw 1 foot at 4 seconds. Bay and inland waters a light chop. A chance of showers and tstms.
Tue - NE winds 5 kt becoming nw in the afternoon. Seas less than 2 ft. Bay and inland waters a light chop. A slight chance of tstms in the morning. A chance of showers. A chance of tstms.
Tue night - NEarshore, N nw winds around 5 kt becoming E ne 5 kt after midnight. Offshore, E ne winds 5 to 10 kt. Seas 0 to 1 foot. Bay and inland waters a light chop. A chance of tstms late in the evening. A chance of showers through the night. A slight chance of tstms after midnight.
Wed - E winds 5 kt becoming se around 5 kt in the afternoon, then becoming w. Seas 0 to 1 foot. Bay and inland waters smooth. A slight chance of showers in the morning. A chance of showers and tstms.
GMZ600 334 Am Cdt Sat May 18 2024
Synopsis - A light to moderate southwesterly to westerly flow prevails through tonight, becoming light and variable early next week. A light southerly to southeasterly flow is established Tuesday afternoon and continues through Wednesday night.
Area Discussion for - Miami-South Florida, FL
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FXUS62 KMFL 181058 AFDMFL
Area Forecast Discussion National Weather Service Miami FL 658 AM EDT Sat May 18 2024
New AVIATION
SHORT TERM
(Today through Sunday)
Issued at 227 AM EDT Sat May 18 2024
A hot and humid day is on tap across much of South Florida as a mid-level ridge continues to slide across the area, being pushed along by a shortwave moving along the northern Gulf states. The ridge will continue to keep conditions mostly dry, however, scattered shower and thunderstorm activity will be possible for coastal locations, primarily on the Atlantic side as the sea breeze boundary pushes inland in the afternoon and early evening hours. Steep low-level lapse rates and enhanced shear along the sea breeze could support stronger storms capable of producing damaging wind gusts and small hail.
With south-southwest flow and warming airmass from the overhead ridge, high temperatures today will peak in the mid to upper 90s across much of South Florida, with heat index values up to 110 possible.
Heat Advisories have been issued for all counties due to the hazardous conditions. Anyone sensitive to heat should plan to avoid extended time outside, and if you are required to be outside, take cooling breaks and stay hydrated.
On Sunday, the aforementioned shortwave and associated frontal boundary will slowly spread over the Florida Peninsula, kicking the ridge off over the Atlantic. This will lead to greater instability and better chances for showers and thunderstorms across the area, especially during the afternoon and evening hours. Some storms could again be strong, capable of producing damaging wind gusts, small hail, and heavy rain. Even with the increased cloud cover and a slightly cooler airmass compared to Saturday, heat will yet again be a concern as south-southwest flow persists over South Florida for much of the day ahead of the frontal boundary. High temperatures will be in the low to mid-90s, with heat index values ranging from 103-108. Heat advisories may be needed yet again for certain areas.
LONG TERM
(Sunday night through Friday)
Issued at 227 AM EDT Sat May 18 2024
Increased rain chances and a bit of relief from the heat to start the long-term period as a mid-level shortwave trough settles over Florida and the Southeast US, and a surface front finally pushes across South Florida. Scattered showers and thunderstorms are expected on Monday and Tuesday, especially during the afternoon and early evening hours, with locally heavy rain possibly leading to a few instances of minor urban flooding across the East Coast metro. A few storms may also be on the strong to severe side, with damaging wind gusts from localized downbursts being the main threat.
From mid to late week, a mid-level ridge will slowly build in from over the Gulf, while the mid-level trough lingers just east of the Florida Peninsula. While chances for showers and thunderstorms will gradually decrease, there will still be daily chances during the afternoon and early evening hours, primarily driven by diurnal sea-breeze convection.
Temperatures will gradually trend cooler each day from early to midweek, and rebound towards the end of the week as the ridging builds back in. Monday's highs will be in the upper 80s to low 90s, with mid to upper 80s on Wednesday, and back into the low 90s again by Friday. Overnight lows will remain warm, in the mid to upper 70s each day. While these temperatures are above normal, they will not lead to the heat concerns that we have seen for much of the past week.
LONG TERM
(Sunday night through Friday)
Issued at 227 AM EDT Sat May 18 2024
Increased rain chances and a bit of relief from the heat to start the long-term period as a mid-level shortwave trough settles over Florida and the Southeast US, and a surface front finally pushes across South Florida. Scattered showers and thunderstorms are expected on Monday and Tuesday, especially during the afternoon and early evening hours, with locally heavy rain possibly leading to a few instances of minor urban flooding across the East Coast metro. A few storms may also be on the strong to severe side, with damaging wind gusts from localized downbursts being the main threat.
From mid to late week, a mid-level ridge will slowly build in from over the Gulf, while the mid-level trough lingers just east of the Florida Peninsula. While chances for showers and thunderstorms will gradually decrease, there will still be daily chances during the afternoon and early evening hours, primarily driven by diurnal sea-breeze convection.
Temperatures will gradually trend cooler each day from early to midweek, and rebound towards the end of the week as the ridging builds back in. Monday's highs will be in the upper 80s to low 90s, with mid to upper 80s on Wednesday, and back into the low 90s again by Friday. Overnight lows will remain warm, in the mid to upper 70s each day. While these temperatures are above normal, they will not lead to the heat concerns that we have seen for much of the past week.
AVIATION
(12Z TAFS)
Issued at 657 AM EDT Sat May 18 2024
Generally VFR conditions will prevail through the morning hours.
Restrictions due to scattered thunderstorms will be possible this afternoon over the east coast terminals, primarily between 18 and 00Z. Light and variable winds this morning will trend SE on the east coast, sustained 10-15kts with gusts to 20kts while winds will become SW at KAPF this afternoon.
MARINE
Issued at 227 AM EDT Sat May 18 2024
Mainly benign conditions over the weekend with light to moderate southwesterly to southerly flow. There will be scattered showers and thunderstorms this weekend, mainly over the Atlantic waters, which could create locally chaotic seas at times and gusty winds.
BEACHES
Issued at 227 AM EDT Sat May 18 2024
Low rip current risks today along the Atlantic and Gulf coasts with light flow. Rip current risks will increase along the Gulf coast on Sunday and into next week as onshore winds increase a bit.
PRELIMINARY POINT TEMPS/POPS
Miami 93 80 93 77 / 30 20 60 40 West Kendall 96 78 95 74 / 20 20 50 40 Opa-Locka 95 79 94 76 / 40 30 60 40 Homestead 94 79 94 77 / 20 10 40 50 Fort Lauderdale 92 80 91 76 / 40 30 70 50 N Ft Lauderdale 93 79 92 75 / 40 30 70 50 Pembroke Pines 97 80 95 77 / 40 30 60 40 West Palm Beach 94 77 92 73 / 50 30 70 50 Boca Raton 94 79 92 74 / 40 30 70 50 Naples 92 79 91 77 / 0 20 40 40
MFL WATCHES/WARNINGS/ADVISORIES
FL...Heat Advisory from 10 AM this morning to 8 PM EDT this evening for FLZ063-066>075-168-172>174.
AM...None.
GM...None.
Area Forecast Discussion National Weather Service Miami FL 658 AM EDT Sat May 18 2024
New AVIATION
SHORT TERM
(Today through Sunday)
Issued at 227 AM EDT Sat May 18 2024
A hot and humid day is on tap across much of South Florida as a mid-level ridge continues to slide across the area, being pushed along by a shortwave moving along the northern Gulf states. The ridge will continue to keep conditions mostly dry, however, scattered shower and thunderstorm activity will be possible for coastal locations, primarily on the Atlantic side as the sea breeze boundary pushes inland in the afternoon and early evening hours. Steep low-level lapse rates and enhanced shear along the sea breeze could support stronger storms capable of producing damaging wind gusts and small hail.
With south-southwest flow and warming airmass from the overhead ridge, high temperatures today will peak in the mid to upper 90s across much of South Florida, with heat index values up to 110 possible.
Heat Advisories have been issued for all counties due to the hazardous conditions. Anyone sensitive to heat should plan to avoid extended time outside, and if you are required to be outside, take cooling breaks and stay hydrated.
On Sunday, the aforementioned shortwave and associated frontal boundary will slowly spread over the Florida Peninsula, kicking the ridge off over the Atlantic. This will lead to greater instability and better chances for showers and thunderstorms across the area, especially during the afternoon and evening hours. Some storms could again be strong, capable of producing damaging wind gusts, small hail, and heavy rain. Even with the increased cloud cover and a slightly cooler airmass compared to Saturday, heat will yet again be a concern as south-southwest flow persists over South Florida for much of the day ahead of the frontal boundary. High temperatures will be in the low to mid-90s, with heat index values ranging from 103-108. Heat advisories may be needed yet again for certain areas.
LONG TERM
(Sunday night through Friday)
Issued at 227 AM EDT Sat May 18 2024
Increased rain chances and a bit of relief from the heat to start the long-term period as a mid-level shortwave trough settles over Florida and the Southeast US, and a surface front finally pushes across South Florida. Scattered showers and thunderstorms are expected on Monday and Tuesday, especially during the afternoon and early evening hours, with locally heavy rain possibly leading to a few instances of minor urban flooding across the East Coast metro. A few storms may also be on the strong to severe side, with damaging wind gusts from localized downbursts being the main threat.
From mid to late week, a mid-level ridge will slowly build in from over the Gulf, while the mid-level trough lingers just east of the Florida Peninsula. While chances for showers and thunderstorms will gradually decrease, there will still be daily chances during the afternoon and early evening hours, primarily driven by diurnal sea-breeze convection.
Temperatures will gradually trend cooler each day from early to midweek, and rebound towards the end of the week as the ridging builds back in. Monday's highs will be in the upper 80s to low 90s, with mid to upper 80s on Wednesday, and back into the low 90s again by Friday. Overnight lows will remain warm, in the mid to upper 70s each day. While these temperatures are above normal, they will not lead to the heat concerns that we have seen for much of the past week.
LONG TERM
(Sunday night through Friday)
Issued at 227 AM EDT Sat May 18 2024
Increased rain chances and a bit of relief from the heat to start the long-term period as a mid-level shortwave trough settles over Florida and the Southeast US, and a surface front finally pushes across South Florida. Scattered showers and thunderstorms are expected on Monday and Tuesday, especially during the afternoon and early evening hours, with locally heavy rain possibly leading to a few instances of minor urban flooding across the East Coast metro. A few storms may also be on the strong to severe side, with damaging wind gusts from localized downbursts being the main threat.
From mid to late week, a mid-level ridge will slowly build in from over the Gulf, while the mid-level trough lingers just east of the Florida Peninsula. While chances for showers and thunderstorms will gradually decrease, there will still be daily chances during the afternoon and early evening hours, primarily driven by diurnal sea-breeze convection.
Temperatures will gradually trend cooler each day from early to midweek, and rebound towards the end of the week as the ridging builds back in. Monday's highs will be in the upper 80s to low 90s, with mid to upper 80s on Wednesday, and back into the low 90s again by Friday. Overnight lows will remain warm, in the mid to upper 70s each day. While these temperatures are above normal, they will not lead to the heat concerns that we have seen for much of the past week.
AVIATION
(12Z TAFS)
Issued at 657 AM EDT Sat May 18 2024
Generally VFR conditions will prevail through the morning hours.
Restrictions due to scattered thunderstorms will be possible this afternoon over the east coast terminals, primarily between 18 and 00Z. Light and variable winds this morning will trend SE on the east coast, sustained 10-15kts with gusts to 20kts while winds will become SW at KAPF this afternoon.
MARINE
Issued at 227 AM EDT Sat May 18 2024
Mainly benign conditions over the weekend with light to moderate southwesterly to southerly flow. There will be scattered showers and thunderstorms this weekend, mainly over the Atlantic waters, which could create locally chaotic seas at times and gusty winds.
BEACHES
Issued at 227 AM EDT Sat May 18 2024
Low rip current risks today along the Atlantic and Gulf coasts with light flow. Rip current risks will increase along the Gulf coast on Sunday and into next week as onshore winds increase a bit.
PRELIMINARY POINT TEMPS/POPS
Miami 93 80 93 77 / 30 20 60 40 West Kendall 96 78 95 74 / 20 20 50 40 Opa-Locka 95 79 94 76 / 40 30 60 40 Homestead 94 79 94 77 / 20 10 40 50 Fort Lauderdale 92 80 91 76 / 40 30 70 50 N Ft Lauderdale 93 79 92 75 / 40 30 70 50 Pembroke Pines 97 80 95 77 / 40 30 60 40 West Palm Beach 94 77 92 73 / 50 30 70 50 Boca Raton 94 79 92 74 / 40 30 70 50 Naples 92 79 91 77 / 0 20 40 40
MFL WATCHES/WARNINGS/ADVISORIES
FL...Heat Advisory from 10 AM this morning to 8 PM EDT this evening for FLZ063-066>075-168-172>174.
AM...None.
GM...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| RKXF1 - Rookery Bay Reserve, FL | 6 mi | 107 min | SW 6 | 86°F | 30.01 | 79°F | ||
| WPLF1 - Watson Place, FL | 30 mi | 92 min | 88°F | 33 ft | ||||
| CNBF1 - Cannon Bay, FL | 33 mi | 92 min | 88°F | 32 ft | ||||
| LMRF1 - Lostmans River, FL | 41 mi | 92 min | 88°F | 33 ft | ||||
| WIWF1 - Willy Willy, FL | 44 mi | 92 min | 85°F | 31 ft | ||||
| FMRF1 - 8725520 - Fort Myers, FL | 48 mi | 44 min | S 6G | 87°F | 86°F | 29.98 |
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KAPF NAPLES MUNI,FL | 13 sm | 38 min | SSW 11 | 10 sm | A Few Clouds | 90°F | 79°F | 71% | 29.96 |
Marco
Click for Map
Sat -- 03:41 AM EDT Moonset
Sat -- 04:29 AM EDT 0.53 feet Low Tide
Sat -- 06:39 AM EDT Sunrise
Sat -- 10:54 AM EDT 1.97 feet High Tide
Sat -- 04:00 PM EDT Moonrise
Sat -- 05:01 PM EDT 0.46 feet Low Tide
Sat -- 08:07 PM EDT Sunset
Sat -- 11:47 PM EDT 1.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 03:41 AM EDT Moonset
Sat -- 04:29 AM EDT 0.53 feet Low Tide
Sat -- 06:39 AM EDT Sunrise
Sat -- 10:54 AM EDT 1.97 feet High Tide
Sat -- 04:00 PM EDT Moonrise
Sat -- 05:01 PM EDT 0.46 feet Low Tide
Sat -- 08:07 PM EDT Sunset
Sat -- 11:47 PM EDT 1.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Marco, Big Marco River, Florida, Tide feet
| 12 am |
| 1.6 |
| 1 am |
| 1.4 |
| 2 am |
| 1.1 |
| 3 am |
| 0.7 |
| 4 am |
| 0.6 |
| 5 am |
| 0.6 |
| 6 am |
| 0.8 |
| 7 am |
| 1.1 |
| 8 am |
| 1.4 |
| 9 am |
| 1.7 |
| 10 am |
| 1.9 |
| 11 am |
| 2 |
| 12 pm |
| 1.9 |
| 1 pm |
| 1.6 |
| 2 pm |
| 1.3 |
| 3 pm |
| 0.9 |
| 4 pm |
| 0.6 |
| 5 pm |
| 0.5 |
| 6 pm |
| 0.6 |
| 7 pm |
| 0.8 |
| 8 pm |
| 1.1 |
| 9 pm |
| 1.3 |
| 10 pm |
| 1.6 |
| 11 pm |
| 1.7 |
Coon Key
Click for Map
Sat -- 03:41 AM EDT Moonset
Sat -- 05:01 AM EDT 1.06 feet Low Tide
Sat -- 06:38 AM EDT Sunrise
Sat -- 11:20 AM EDT 3.07 feet High Tide
Sat -- 03:59 PM EDT Moonrise
Sat -- 05:52 PM EDT 0.81 feet Low Tide
Sat -- 08:07 PM EDT Sunset
Sat -- 11:52 PM EDT 2.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 03:41 AM EDT Moonset
Sat -- 05:01 AM EDT 1.06 feet Low Tide
Sat -- 06:38 AM EDT Sunrise
Sat -- 11:20 AM EDT 3.07 feet High Tide
Sat -- 03:59 PM EDT Moonrise
Sat -- 05:52 PM EDT 0.81 feet Low Tide
Sat -- 08:07 PM EDT Sunset
Sat -- 11:52 PM EDT 2.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Coon Key, Florida, Tide feet
| 12 am |
| 2.5 |
| 1 am |
| 2.2 |
| 2 am |
| 1.8 |
| 3 am |
| 1.4 |
| 4 am |
| 1.2 |
| 5 am |
| 1.1 |
| 6 am |
| 1.2 |
| 7 am |
| 1.5 |
| 8 am |
| 1.9 |
| 9 am |
| 2.4 |
| 10 am |
| 2.8 |
| 11 am |
| 3.1 |
| 12 pm |
| 3 |
| 1 pm |
| 2.7 |
| 2 pm |
| 2.3 |
| 3 pm |
| 1.7 |
| 4 pm |
| 1.2 |
| 5 pm |
| 0.9 |
| 6 pm |
| 0.8 |
| 7 pm |
| 1 |
| 8 pm |
| 1.4 |
| 9 pm |
| 1.8 |
| 10 pm |
| 2.3 |
| 11 pm |
| 2.6 |
Miami, FL,
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