Monday, March 30, 2026
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⚠️ STRONG SHOWER WARNING: Gusty winds to 30 knots, locally higher waves, and waterspouts possible over Atlantic waters from Jupiter Inlet to Ocean Reef, 13 nm offshore and beyond. Boaters in that area should seek safe harbor immediately. Showers moving west at 15 knots.
Conditions Headline
Northeastern Atlantic swell and strong easterly winds are building offshore, with rough seas at buoy 41009 (20 nm offshore) reading 8.5 ft and 10-second periods, and buoy 41114 (12 nm offshore) reporting 8.2 ft with 11-second periods. Nearshore, seas drop significantly: buoy 41122 (23 nm offshore) shows 6.2 ft in the Deerfield to Miami zone, while upper Keys waters remain calm at 3.3 ft. A strong shower capable of producing 30-knot gusts is moving westward across the Atlantic waters east of Hillsboro Beach, bringing the potential for waterspouts and brief locally higher waves.
NWS marine forecast (issued this morning for zones AMZ630) warns of gusty winds to around 30 knots and heavy downpours over coastal and offshore waters from Jupiter Inlet to Ocean Reef out 60 nm. The shower is 13 nm east of Hillsboro Beach and moving west at 15 knots. Mariners can expect lightning strikes and locally higher waves. Waterspouts are possible with this activity and remain a threat while the shower moves through.
Narcosis Dive (West Palm Beach) confirmed excellent conditions on March 28: 70–80 ft visibility, 75°F water, no current, and 1 ft waves. Rainbow Reef (Key Largo) reported marginal conditions on March 29 afternoon: 2–3 ft visibility to 40 ft, current beyond 40 ft, and 15-knot easterly wind.
Blue Heron Bridge tide windows today: morning window 6:43 AM–7:43 AM (high tide 2.7 ft at 7:13 AM), evening window 7:06 PM–8:06 PM (high tide 2.8 ft at 7:36 PM). Wind at BHB station 22.9 kt E and water 76.5°F — verify with your operator before entry.
Daily Data
Data sourcing: All buoy observations recorded this morning (March 30); tide predictions from NOAA station 8722588. Nearshore visibility is estimated from offshore buoy seas and wave periods. Operator reports from March 28–29 confirm recent dive site conditions. NWS marine forecast issued this morning for zones AMZ630.
Region | Conditions Rating | Vis | Temp | Seas | Wind / Note |
|---|---|---|---|---|---|
Space Coast (Cocoa Beach / Sebastian) | Elevated | Est. 20–30 ft | 72–74°F | 8.5 ft | Buoy 41009 (20 nm offshore); 10s period; 15.6 kt E wind |
Jupiter / Tequesta | Elevated | Est. 20–30 ft | 75.7°F | 8.2 ft | Buoy 41114 (12 nm offshore); 11s period; nearshore smaller |
Blue Heron Bridge | Protected | Est. 30–50 ft | 76.5°F | Protected | Buoy LKWF1; 22.9 kt E wind; morning window 6:43–7:43 AM, evening 7:06–8:06 PM |
Palm Beach / Singer Is. | Protected | Est. 30–50 ft | 76.5°F | Protected | Buoy LKWF1; 22.9 kt E wind; Narcosis confirmed 70–80 ft vis (March 28) |
Deerfield / Pompano | Marginal | Est. 15–25 ft | 77.4°F | 6.2 ft | Buoy 41122 (23 nm offshore); 7s period; nearshore smaller |
Fort Lauderdale | Marginal | Est. 15–25 ft | 77.4°F | 6.2 ft | Buoy 41122 (23 nm offshore); 7s period; nearshore smaller |
Miami / Key Biscayne | Calm | Est. 20–35 ft | 77.4°F | 6.2 ft | Buoy 41122 (23 nm offshore); 7s period; nearshore smaller |
Key Largo / Upper Keys | Calm | Est. 25–40 ft | 76.8°F | 3.3 ft | Buoy 42095 (15 nm offshore); 6s period; most protected zone |
Sources: NOAA NDBC buoy 41009, 41114, 41122, 42095 (observed this morning). NOAA LKWF1 station (observed this morning). NOAA tide predictions station 8722588 (Lake Worth / BHB). NWS marine forecast AMZ630 issued this morning. Narcosis Dive (March 28, 2026). Rainbow Reef (March 29, 2026, 02:53 PM EDT).
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Today on the Water — By Activity
Activity | Verdict | Notes |
|---|---|---|
🤿 Scuba Diving | Marginal | BHB windows open 6:43–7:43 AM and 7:06–8:06 PM; 76.5°F water and protected seas. Offshore sites (Jupiter, Deerfield) have elevated seas (8.2–8.5 ft at buoys 20–23 nm out) with easterly swell; visibility likely 15–30 ft nearshore. Upper Keys calmest (3.3 ft offshore). Recent operator viz: Narcosis 70–80 ft (March 28), Rainbow Reef 2–3 ft (March 29). Verify with your operator. |
🏄 Surfing | Building | Buoys 41009, 41114 showing 8.5, 8.2 ft with 10–11 sec periods offshore — swell consistent but nearshore faces 3–4 ft max. Rip current risk elevated where 15.6 kt E wind and NE swell interact. Strong shower warning active over Atlantic waters out to 60 nm — waterspouts possible. Check rip current alerts before entry. Verify with your captain. |
🚣 Kayak / SUP | Marginal | Inshore waters (BHB, Singer Is., Biscayne) protected; 6.2–3.3 ft offshore. Wind 22.9 kt E at BHB — choppy paddling expected near inlets. Strong shower warning 13 nm east of Hillsboro and moving west at 15 knots — heavy rain, gusty wind to 30 kt possible. Stay within 0.5 nm of shore. Verify with your captain. |
⛵ Boating / Fishing | Elevated | Elevated seas offshore (8.2–8.5 ft, buoys 12–20 nm out). Active strong shower warning: winds to 30 knots, locally higher waves, lightning, heavy downpours, and waterspout potential over all Atlantic zones Jupiter to Ocean Reef out 60 nm. Shower moving west at 15 knots from 13 nm east of Hillsboro Beach. NWS advises: boaters seek safe harbor immediately. Port Everglades current 0.45 kt NNW. |
🏖️ Beach / Swimming | Marginal | UV index high (7 today, 8 tomorrow). Nearshore seas 3.3–6.2 ft; rip current risk elevated with easterly wind and swell. Strong shower warning active — seek shelter if thunder/lightning observed. Water temps warm (75.7–77.4°F). Verify with your lifeguard before swimming. |
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Week Outlook
Today 🔴: Strong shower warning active; gusty winds to 30 kt, waterspouts possible, seas 8.5 ft offshore. Conditions marginal for diving, boating elevated risk.
Tuesday 🟡: Shower moves offshore by morning; winds remain 15–20 kt E. Seas 7–8 ft at buoys 12–20 nm out. Marginal to building conditions.
Wednesday 🟡: Easterly swell persists. Winds 12–18 kt E. Seas 6–7 ft offshore. Marginal conditions continue; nearshore calmer.
Thursday–Friday 🟢: Wind expected to ease. Seas gradually subsiding to 5–6 ft offshore. Improving diving and boating conditions mid-week.
All offshore sea heights from NOAA buoys 20–60 nm from shore. Nearshore conditions smaller. Always check with your operator.
Marine Life Sighting Alert
⚪ NO CONFIRMED SIGHTINGS TODAY
Narcosis Dive (West Palm Beach, March 28) reported excellent viz (70–80 ft), 75°F water, no current, and 1 ft waves — conditions suitable for encountering reef life, though no specific species documented. Rainbow Reef (Key Largo, March 29) reported marginal viz (2–3 ft to 40 ft) and current beyond 40 ft. No confirmed marine life sightings in operator logs. Check back tomorrow — operator logs update daily.
Daily Safety Tip
⚠️ Waterspout Watch & Strong Shower Safety
A strong shower capable of producing 30-knot gusts and waterspouts is moving westward across Atlantic waters from Jupiter Inlet to Ocean Reef. If you see a rotating column of air over the water or funnel cloud, move immediately perpendicular to its path and seek shelter. Boaters should have a safe harbor identified now and move into it at first sign of thunder or rapidly darkening sky. On shore, seek shelter if lightning is within hearing range.
Disclaimer: The Florida Flow aggregates publicly available NOAA forecasts, buoy data, and operator logs. All offshore sea heights are from NOAA buoys 20–60 nm from shore. Nearshore conditions will be smaller and vary by location, bottom topography, and local factors. Conditions ratings are informational only — always confirm with your captain or dive operator before heading out. Use at your own risk.
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