Port Sulphur Seaplane Base (4LA0) Area Aviation Weather & Runway Winds
As of 10:32 PM CDT, Oct 28, based on the nearest station (KNBG), 4LA0 is currently MVFR with calm winds, visibility 5 statute miles, and no ceiling reported.
Aviation weather near Port Sulphur Seaplane Base in Port Sulphur, LA, decoded from the nearest reporting station (KNBG): conditions and runway crosswinds.
Port Sulphur Seaplane Base (4LA0) is a seaplane base in Port Sulphur, LA. 4LA0 has no weather station of its own. Conditions here are decoded from KNBG, about 28 nm away, the nearest reporting station, and local conditions can differ. It has 4 physical runways (NE, NW, SE, SW), the longest 15,000 ft. The nearest TAF is issued for KNBG.
No weather station at this airport: showing the nearest station KNBG, 27.8 nm away.
Wind calm, visibility 5 statute miles, scattered clouds at 25,000 ft, temperature 14°C (57°F), altimeter 30.16 inHg. Conditions are Marginal VFR (MVFR).
SPECI KNBG 290332Z 00000KT 5SM SCT250 14/14 A3016 RMK AO2 T01390139 $
What changed at KNBG (nearest station)?
Since the 0255Z (9:55 PM CDT) report, compared automatically against the latest METAR.
- Flight category dropped from VFR to MVFR.
- Visibility dropped from 10 SM to 5 SM.
The latest report is an off-schedule special (SPECI), issued because conditions changed significantly. What is a SPECI? →
Current pilot readout for 4LA0
Based on the nearest station (KNBG), 4LA0 is currently MVFR with calm winds, visibility 5 statute miles, and no ceiling reported. Density altitude is approximately -450 ft (field elevation 0 ft). Review the latest TAF below for forecast changes before departure.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
Runway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
Current wind is calm: calm wind is not a factor for runway selection, and with no wind there is no head/tail or crosswind component to compute. Live numbers return automatically once a report includes a wind direction.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| NE | 15,000 ft | WATER | - | - |
| NW | 15,000 ft | WATER | - | - |
| SE | 15,000 ft | WATER | - | - |
| SW | 15,000 ft | WATER | - | - |
Open the crosswind calculator to try your own wind and runway numbers →
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 24 h: wind 0→0 kt, ceiling 25,000 ft → unlimited.
4LA0 weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap
NOAA NEXRAD composite and lightning, updated about every five minutes; amber frames are HRRR model guidance, not observed radar. Not for navigation.
Pilot reports (PIREPs) within 100 NM of 4LA0
Reported by pilots in flight over the past 6 hours, via aviationweather.gov.
Show raw report
MSY UA /OV LEV/TM 0107/FL290/TP A321/TB LGT CHOP/RM ZHU
MSY UAHeader: reporting station and UA: a routine pilot report.OV LEVLocation: fix or navaid, optionally with a radial and distance in NM.TM 0107Reported at 01:07 UTC.FL290Altitude: 29,000 ft MSL.TP A321Aircraft type reporting.TB LGT CHOPTurbulence: light chop.RM ZHURemarks.Show raw report
MSY UA /OV HRV360020/TM 2255/FL340/TP B738/TB CONS LGT/RM ZHU
MSY UAHeader: reporting station and UA: a routine pilot report.OV HRV360020Location: fix or navaid, optionally with a radial and distance in NM.TM 2255Reported at 22:55 UTC.FL340Altitude: 34,000 ft MSL.TP B738Aircraft type reporting.TB CONS LGTTurbulence: continuous light.RM ZHURemarks.⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.
Recent aviation weather trends at 4LA0
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station KNBG reported a mix of conditions, most often VFR across 47 observations, with 23 flight-category changes. The lowest ceiling was 200 ft. Wind most often came from the NE.
Most recent change: VFR → MVFR
Most recent change: MVFR → VFR
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- NE/NW/SE/SW
- 100%
TAF | Terminal Aerodrome Forecast
Issued 2300Z (6:00 PM CDT)
TAF KNBG 282300Z 2823/2923 08007KT 9999 SCT250 QNH3009INS BECMG 2907/2909 VRB03KT 4800 BR SCT020 SCT250 QNH3011INS BECMG 2911/2913 02005KT 9999 NSW FEW030 SCT250 QNH3015INS BECMG 2917/2919 07012KT 9999 SCT035 SCT250 QNH3009INS AUTOMATED SENSOR METWATCH 2904 TIL 2910 TX26/2819Z TN13/2911Z FN00324
New to TAFs? How to read one →
Get 4LA0 weather alerts in Telegram
Stop refreshing aviation weather manually. Track 4LA0 in ATIS Alerts and get notified when a new METAR changes the picture: a category drop, or wind and ceiling moving toward your minimums.
Track 4LA0 free on TelegramField aerial
North up
Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit
Airport info
Reference data from the OurAirports dataset.
- Type
- Seaplane base
- FAA LID
- 4LA0
- City
- Port Sulphur
- State
- Louisiana
- Country
- United States
- Elevation
- 0 ft
- Coordinates
- 29.4627, -89.7028
- Runways
- 4 physical runways · 4 runway ends
- Longest runway
- 15,000 ft
- Weather reporting
- Nearest station KNBG
- TAF
- Nearest KNBG
- Time zone
- America/Chicago
- Next sunset
- 19h 29m
Run a flight school, FBO, or club here? Embed 4LA0's live status on your website, free →
Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
1 airport25–50 NM
8 airports+2 more within 50 NM
50–100 NM
8 airports+2 more within 100 NM
RC flying fields nearby
AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.
- St. Bernard Aerospace Club - Hwy 46 , St. Bernard, LA · 28 mi
Pilot PIREPs for Port Sulphur Seaplane Base (4LA0)
Community-submittedCommunity-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.
Read recent community-submitted pilot notes for Port Sulphur Seaplane Base, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.
⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.
No Pilot PIREPs have been submitted for 4LA0 yet. Recently flew here? Help the next pilot by leaving a quick airport note.
Pilot PIREPs are community pilot notes for situational awareness only, not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
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