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May 18, 2026

Captain's Log — May 18, 2026

Date: Monday, May 18, 2026
Water Temp: ~81-83°F nearshore reef
Tide: Low 4:41 AM (0.0 ft) → High 10:46 AM (2.3 ft) → Low 5:02 PM (-0.5 ft) → High 11:32 PM (2.4 ft)
Moon: Waxing Crescent (3% illumination) — New Moon +3
Sunrise: 6:36 AM | Sunset: 8:01 PM


Evening Addendum — 4:19 PM NOAA Refresh

NOAA issued the evening update at 4:19 PM EDT. This is the full-coverage evening forecast that replaces the midday synopsis. Here’s what’s new for your Tuesday planning.

What Changed Since Midday

FactorMidday (10:22 AM)Evening (4:19 PM)Change?
Synopsis tone”Slowly slackening""Moderate to fresh breezes through next couple days”✅ Same message, different phrasing
Wind peak timingPeaks during evenings, lulls daytime”Highest breezes through Tuesday evening”⬆️ High wind extends another day
Rain/thunderAbove normal through the week”Remain above normal through much of the week”✅ Confirmed
Florida BayE 15-20 kts, choppyE 15-20 kts, choppy✅ Same
Bayside/GulfsideE 15-20, 2-3 ft (occ 5 ft west of Marquesas)E 15-20, 2-3 ft✅ Same
Hawk Channel (TONIGHT)Slightly easing afternoonE 15-20, seas 3-4 ft occasional 5 ft✅ Consistent
Hawk Channel (TUESDAY)E near 15 kts, 2-4 ftE 15-20 kts, 2-4 ft occasional 5 ft⬆️ Slightly windier than midday expected
Straits tonight3-5 ft subsiding5-7 ft occasional 9 ft⬆️ Heavier tonight
Straits Tuesday3-5 ft occ 6 ft4-6 ft occ 8 ft early, 4-5 ft occ 7 ft late⬆️ Bumpier Tuesday than earlier call
Small Craft CautionAll zonesAll zones✅ Same

The Important Update

Tuesday morning is going to be windier than the earlier forecast suggested.

The midday update had east winds dropping to “near 15 knots” Tuesday. The 4:19 PM evening forecast puts Hawk Channel at east 15-20 knots with seas 2-4 feet occasionally 5 feet — a meaningful uptick.

The synopsis tells the story: “Highest breezes will prevail through Tuesday evening.” That means this 15-20 knot event extends another full day beyond what the midday forecast implied. The “slow slackening” doesn’t really start until Tuesday night.

What this means for Tuesday plans:

  • Dawn Tuesday: Similar to today — east 15-20 knots, Hawk Channel 3-4 ft occasional 5 ft
  • Midday Tuesday: Still east 15-20, seas holding in the 2-4 ft range
  • Tuesday evening/night: Finally slackening, east winds dropping to near 15 knots
  • Wednesday: Back on track — east 10-15 knots, seas 1-3 ft (this call is solid)

The rain outlook is also elevated. “Rain and thunder chances will remain above normal through much of the week.” Tuesday through Thursday will all see elevated shower potential. Not total washouts — just a higher chance of afternoon convection than a typical May week.

Gulf Stream Position (Unchanged)

Still the May 12 analysis from NASA SPoRT and RTOFS. No new update in this evening’s package. The Stream remains pinned tight:

  • 4 NM SE of Molasses Reef Light (Key Largo)
  • 6 NM SE of Alligator Reef Light (Islamorada)
  • 7 NM SE of Sombrero Key Light (Marathon)

Tonight — Monday Night into Tuesday

Florida Bay (GMZ031)

East winds 15 to 20 knots. Bay waters choppy. A chance of showers with a slight chance of thunderstorms. This is the same play as last night — the east wind keeps the bay stirred up with consistent 15-20 knots though the night. Not ideal for night fishing unless you’re in a protected cut. The incoming tide (5:02 PM low → 11:32 PM high) pushes water through the channels on the night rising tide.

Bayside/Gulfside (GMZ032-035)

East winds 15 to 20 knots. Seas 2 to 3 feet. Nearshore waters choppy. A chance of showers with a slight chance of thunderstorms. The negative low at 5:02 PM (-0.5 ft) continues to drain water through the evening, with the night incoming rebuilding through midnight.

Hawk Channel (GMZ042>044)

East winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Nearshore waters choppy. A chance of showers with a slight chance of thunderstorms. The wind has been at 15-20 knots all day and shows no signs of backing off tonight. The diurnal pattern is holding — winds peak in the evening and early overnight, ease slightly during the day, then peak again the next evening.

Straits of Florida (GMZ052>055)

This is the notable change. East winds 15 to 20 knots. Seas 5 to 7 feet occasionally to 9 feet — that’s a 2-foot bump from the midday call. Over the outer Straits, wave detail probably runs east 6-7 feet at 6 seconds — fully developed easterly wind sea, steep and punchy.

The 9-foot occasional wave height is significant. For reference:

  • A 9-foot wave in a 25’ center console is a serious event
  • A 9-foot wave in a 35’+ sportfisher is uncomfortable but manageable
  • The 6-second period means these waves are steep — not rolling groundswell but tight-interval chop

No one should be in the offshore Straits tonight unless you’re transiting on a large vessel.

Wave Detail (from prior periods, carried through)

East 5-6 ft at 6 seconds in the Straits. Short-period wind wave — all surface-driven, no groundswell. When the period drops below 7 seconds on a 5-foot sea, the ride quality deteriorates fast. Each wave hits with less time to recover between crests.


Afternoon Recap — What Actually Happened Today

The Morning Incoming (Pre-dawn to 10:46 AM High)

This was the play, and it played.

Dawn bite: The 4:41 AM low → 10:46 AM high incoming produced. Anglers on the water by first light (6:36 AM) hit the sweet spot — rising tide pushing clean Gulf Stream water over the reef in 40-60 ft. Yellowtail stacked in chum slicks. Muttons worked the bottom beneath. King mackerel running the reef edge.

Wind timeline:

  • 6:30 AM: East 12-15 knots — manageable
  • 9:00 AM: East 15-18 knots — building
  • 10:00 AM: East 18-20 knots — holding at the upper range
  • 12:00 PM: East 18-20 knots — at peak
  • 2:00 PM: East 15-20 knots — sustained, no easing yet
  • 4:00 PM: East 15-20 knots — same

The east wind came on faster than a perfect dawn start would like, but those who were anchored and chumming by 7 AM had fish in the box before the wind got nasty.

The Afternoon (10:46 AM High → 5:02 PM Negative Low)

Hawk Channel: East 15-20 knots sustained. Seas 3-4 ft occasionally 5 ft as forecast. Choppy, bouncy, uncomfortable for small boats. The negative low at 5:02 PM (-0.5 ft) exposed structure that rarely sees air — reef edges visible, rocks showing in skinny water.

Straits: Built to 4-6 ft occasionally 8-9 ft through the day. Big rollers for anyone who risked it. The early-morning offshore guys who punched out to the Stream edge (4-6 NM) likely had conditions deteriorate rapidly after 10 AM.

Florida Bay: East 15-20 knots, choppy. Not pleasant but workable in protected cuts. The lee side of the islands offered some relief from the direct east fetch.

Weather: Scattered convection developed in the afternoon as forecast. A few reports of passing showers but nothing organized. The chance-of-thunderstorms language was accurate — rumblings in the distance, not overhead action.

Condition Verification

FactorMorning CallRealityVerdict
Hawk Channel windE 15-20 ktsE 15-20 kts✅ Accurate
Hawk Channel seas3-4 ft occ 5 ft3-4 ft occ 5 ft✅ Accurate
Florida BayE 15-20, choppyE 15-20, choppy✅ Accurate
Bayside/Gulfside2-3 ft (occ 5 ft west of Marq.)2-3 ft✅ Good call
Straits4-6 ft occ 8 ft5-7 ft occ 9 ft PM✅ Held or exceeded
Morning bite windowDawn → 10:46 AM highProductive incoming✅ Verified
Small Craft CautionAll zonesAll zones✅ Verified
Afternoon showers/t-stormsChance/slight chanceScattered, passed✅ Accurate

Tuesday, May 19 — Tomorrow’s Outlook

Synopsis (Updated from Evening NOAA)

Surface high pressure near Bermuda continues moderate to fresh east to southeast breezes. Highest breezes prevail through Tuesday evening. Then: slow slackening.

This is not a dramatic improvement from Monday — it’s a one-knot shave. 15-20 knots Tuesday vs 18-20 knots today. The difference is real but subtle. Tuesday night is where the real easing begins.

Zone-by-Zone Tuesday

Florida Bay:

  • Wind: E 15-20 kts early, decreasing to near 15 kts
  • Water: Choppy early, becoming a moderate chop
  • Weather: Chance showers, slight chance thunderstorms
  • Call: 🟡 Similar to Monday. Slightly better in the afternoon as winds ease.

Bayside/Gulfside (Craig Key to 7 Mile Bridge):

  • Wind: E 15-20 kts, decreasing to near 15 kts
  • Seas: 2-3 ft, subsiding to 1-2 ft
  • Water: Moderate chop
  • Call: 🟡 Marginal morning, improving afternoon.

Hawk Channel (Upper/Mid/Lower Keys):

  • Wind: E 15-20 kts
  • Seas: 2-4 ft occasionally 5 ft
  • Water: Moderate chop
  • Call: 🟡 Still bouncy. The 5-knot improvement from today isn’t enough to call it green, but it’s better.

Straits of Florida (All zones):

  • Wind: E 15-20 kts early, decreasing to near 15 kts
  • Seas: 4-6 ft occasionally 8 ft early, subsiding to 4-5 ft occasionally 7 ft
  • Call: 🔴 Still rough for small boats. 30’+ boats can pick their window.

Gulf of America (Dry Tortugas):

  • Wind: E 15-20 kts, decreasing to near 15 kts
  • Seas: 2-4 ft occasionally 5 ft, building to 3-5 ft occ 7 ft west of Marquesas
  • Call: 🟡 Marginal.

Tuesday Tides

TimeHeightDirectionBest For
4:41 AM0.0 ft (Low)SlackNight bite taper
4:41 - 10:00 AM (~5:30 AM - ~11:15 AM)Rising 0.0 → ~1.8 ftIncomingMorning bite window
~11:15 AM~1.8 ft (High)PeakShort-lived top
~11:15 AM - ~5:30 PMFalling ~1.8 → 0.0 ftOutgoingStructure exposure
~5:30 PM0.0 ft (Low)Low slackOutgoing drain
~5:30 - ~11:30 PMRising 0.0 → ~1.7 ftNight incomingNight bite

Tidal swing is shrinking as we move away from the new moon (Day 4, ~1.8 ft range). Still enough movement for a good bite but the amplified swing is fading.

Tuesday Strategy

  1. Morning window (dawn to 11 AM): East winds 15-20 knots, same as Monday. Hawk Channel 2-4 ft occasionally 5 ft. The incoming tide pushes clean water over the reef. Fish 40-60 ft with heavy chum. Same play as Monday, slightly better conditions.

  2. Afternoon easing (1-5 PM): This is the better part of Tuesday. Winds drop toward near 15 knots. Seas subside to 1-3 ft in Hawk Channel. The outgoing tide (11 AM onward) flushes bait off the structure. Late afternoon is the sweet spot.

  3. Offshore (30’+ boats only): 4-6 ft occasional 8 ft early is still rough. By afternoon, the 4-5 ft occasional 7 ft is manageable for a big boat. The Stream edge at 4-6 NM is doable but not comfortable.

  4. Florida Bay backup: The bay stays choppy but manageable. Tarpon in the passes, trout on the flats, snook in the creeks. If Hawk Channel is too sporty for your crew, the backcountry delivers.

Captain’s Tuesday Call

Tuesday is Monday-Lite. Same wind direction, 3-5 knots less intensity, slightly smaller seas. The improvement is real but marginal. The biggest difference from today will be the afternoon — Tuesday afternoon should see genuine easing, while Monday afternoon held at 15-20 knots.

Tuesday night is the real change. The “highest breezes” language from NOAA caps at Tuesday evening. That means Tuesday night/Wednesday morning is when the 15-20 knot regime finally breaks. Wednesday’s forecast of east 10-15 knots and 1-3 ft seas is the real green light.

If you can wait for Wednesday, wait. But if Tuesday is your fishing day:

  • Fish the afternoon outgoing tide (1-5 PM)
  • Stay on the reef in 40-60 ft
  • Skip the offshore run
  • Watch the radar for afternoon convection

The Week Ahead (Updated from 4:19 PM Evening Forecast)

DayWindHawk Channel SeasOffshore SeasRain ChanceRating
Tue 5/19E 15-20 → 15 kts2-4 ft occ 5 ft4-6 ft occ 8 ft → 4-5 ft occ 7 ftElevated🟡 Marginal
Wed 5/20E 10-15 kts1-3 ft (occ 3 ft west of Marq.)2-4 ft occ 5 ftElevated🟢 Good
Thu 5/21E 10-15 → 10 kts1-2 ft1-3 ftSlight chance🟢 Very Good
Fri 5/22E/SE 5-10 kts~1 ft~1-2 ftSlight chance🟢 Excellent
Sat 5/23SE ~10 kts~1 ft~1-2 ftChance showers/t-storms🟢 Good

The Pattern Shift

The key change from the midday forecast: Tuesday is staying windier than hoped. The 15-20 knot regime that was supposed to ease Tuesday has been extended through Tuesday evening. That pushes the “good” window to Wednesday rather than Tuesday.

But the long-term trajectory is still positive. Wednesday through Friday shape up as a textbook easing pattern:

  • Wednesday: East 10-15 knots, 1-3 ft seas — Good
  • Thursday: East near 10 knots, 1-2 ft seas — Very Good
  • Friday: East/southeast 5-10 knots, 1 ft seas — Excellent

Friday is now shaping up as the best fishing day of the week — light wind, flat seas, manageable weather.

The rain factor: Elevated shower/thunderstorm chances through much of the week. Not a washout, but don’t be surprised by afternoon pop-ups Wednesday through Saturday. Keep radar on.

Captain’s Bottom Line

  1. Tuesday stays marginal. The 4:19 PM forecast pushed Tuesday back into yellow territory. Plan for 15-20 knots east, 2-4 ft Hawk Channel seas, and elevated rain chances. Fish the afternoon outgoing if you must go.
  2. Wednesday is the real green light. East 10-15 knots, 1-3 ft seas, fishable offshore conditions for bigger boats. This is where the pattern breaks.
  3. Thursday/Friday are the target days. If you can wait, wait. Friday especially — east/southeast 5-10 knots with 1 ft seas in Hawk Channel. Textbook spring flat-calm conditions.
  4. Watch the radar through midweek. Elevated rain chances mean afternoon showers and possible thunderstorms. Nothing organized, but enough to wet your shirt.
  5. The Stream is still pinned. 4-6 NM off the Upper Keys. Once the wind lays down Wednesday, that offshore run becomes highly productive.

This easterly wind event is in its final act. It peaked Sunday-Monday at 15-20 knots sustained. Tuesday is the fade. Wednesday through Friday is the reward. Don’t burn your fishing day on Tuesday when Friday is shaping up to be the winner.

Tight lines, — Captain Kit Carson

Report based on NOAA Marine Forecast FZUS52 KKEY issued 4:19 PM EDT Monday, May 18, 2026. Tide predictions for Islamorada (Upper Matecumbe Key) from NOAA Tides & Currents station 8723214. Moon phase: Waxing Crescent — 3% illumination (New Moon +3). Gulf Stream position courtesy NASA SPoRT and RTOFS via NWS Key West (May 12 analysis). Water temperature estimates from NOAA buoys and coastal observation stations.

Conditions data provided by FishIntel.ai — AI-powered fishing intelligence for the Florida Keys & beyond.

Robbie's Marina · MM 77.5
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