ATIS Alerts

Lost Isle Seaplane Base (S74) Area Aviation Weather & Runway Winds

Aviation weather near Lost Isle Seaplane Base in Stockton, CA, decoded from the nearest reporting station (KSCK) — conditions, runway crosswinds, and free Telegram airport alerts.

Lost Isle Seaplane Base (S74) is a seaplane base in Stockton, CA. S74 has no weather station of its own — conditions here are decoded from KSCK, about 12 nm away, the nearest reporting station, and local conditions can differ. Its 2 runways (NW, SE) — longest 4,000 ft — are checked against the current wind in the crosswind table below. The nearest TAF is issued for KSCK. Track it in the ATIS Alerts Telegram bot to get alerts read from KSCK, the station this page is based on.

VFR
Observed 0455Z (9:55 PM PDT)live · refreshes every 60s

No weather station at this airport — showing the nearest station KSCK, 12.3 nm away.

Wind
270° 8 kt
Visibility
10+ sm
Ceiling
Unlimited
Altimeter
29.82"
Temp / Dew
24°C / 75°F
dew 13°C

Wind from the west (270°) at 8 kt, visibility 10+ statute miles, no cloud data, temperature 24°C (75°F), altimeter 29.82 inHg. Conditions are Visual Flight Rules (VFR).

Raw METAR
METAR KSCK 290455Z AUTO 27008KT 10SM CLR 24/13 A2982 RMK AO2 SLP097 T02390128 $

What changed at KSCK (nearest station)?

Since the 0355Z (8:55 PM PDT) report — compared automatically against the latest METAR.

No significant changes since the 0355Z report — conditions are holding steady.

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Current pilot readout for S74

Based on the nearest station (KSCK), S74 is currently VFR with winds from 270° at 8 knots, visibility 10+ statute miles, and no ceiling reported. The strongest crosswind component is currently on runway NW, about 8 knots. Density altitude is approximately 1,200 ft (field elevation 0 ft). Review the latest TAF below for forecast changes before departure.

⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.

New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →

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Runway wind check

Estimated head/tailwind and crosswind for each runway end from the current reported wind.

Use this section to quickly compare current wind alignment across available runways at S74. This is intended as a planning aid only and should not replace official performance calculations or pilot judgment.

RunwayHead / TailCrosswind
NWFAV0 kt head8 kt left
SE0 kt head8 kt left

Open the crosswind calculator — try your own wind and runway numbers →

24-hour trend

Wind, ceiling and flight category over the last 24 hours.

Wind (kt)Gusts (kt)Bottom strip — flight category:VFRMVFRIFRLIFRNo report
0102005Z17Z04Z

Over the last 23 h: wind 98 kt, ceiling unlimitedunlimited.

S74 weather radar

Live NEXRAD + lightning, with a 4-hour future-radar forecast — drag to pan, tap ⚡ to toggle lightning.

Live weather radar around Lost Isle Seaplane Base in Stockton, CA: the NOAA/NWS NEXRAD composite updates about every five minutes, with NOAA lightning strike density overlaid. The loop plays the past 50 minutes, then continues into a future-radar forecast (+1 to +4 hours, NOAA HRRR model) so you can see where precipitation around S74 is headed.

Loading…
Loading radar…

Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © OpenStreetMap © CARTO

Forecast frames (amber label) are HRRR model guidance, not observed radar. Lightning strike density appears as a blue-white glow when strikes are detected in view. Radar and lightning coverage are limited in parts of Alaska, Hawaii, and offshore areas. Not for navigation.

Pilot reports (PIREPs) within 100 NM of S74

Reported by pilots in flight over the past 6 hours — via aviationweather.gov.

PIREP0352Z (8:52 PM PDT) · 22 NM E of S74 · 6,500 ft MSL · C172
Show raw report
SCK UA /OV LIN /TM 0352 /FL065 /TP C172 /SK SKC /TA 20 /WV 26003KT /TB NEG /IC NEG /RM HZ LYR BLO NORTH TO COMANCHE RESEVOIR WEST TO RIVER DELTA
SCK UAHeader — reporting station and UA: a routine pilot report.
OV LINLocation — fix or navaid, optionally with a radial and distance in NM.
TM 0352Reported at 03:52 UTC.
FL065Altitude: 6,500 ft MSL.
TP C172Aircraft type reporting.
SK SKCSky condition — cloud bases and tops in hundreds of feet MSL.
TA 20Outside air temperature, °C.
WV 26003KTWind (direction/speed) or wind-shear remarks.
TB NEGTurbulence: none reported.
IC NEGIcing: none reported.
RM HZ LYR BLO NORTH TO COMAN…Remarks.
PIREP0236Z (7:36 PM PDT) · 87 NM S of S74 · during climb · A319
Show raw report
MRY UA /OV KMRY/TM 0236/FLDURC/TP A319/SK OVC009
MRY UAHeader — reporting station and UA: a routine pilot report.
OV KMRYLocation — fix or navaid, optionally with a radial and distance in NM.
TM 0236Reported at 02:36 UTC.
FLDURCReported during climb.
TP A319Aircraft type reporting.
SK OVC009Sky condition — cloud bases and tops in hundreds of feet MSL.

⚠️ PIREPs are unverified pilot reports. Not for operational use — conditions change between reports.

Recent aviation weather trends at S74

From ATIS Alerts' hourly weather history.

Over the past 24 hours, the nearest station KSCK reported mostly VFR across 24 observations, with 0 flight-category changes. The strongest gust reached 17 kt. Wind most often came from the NW.

Last 24 hours
VFR 100%
Wind avg/max: 7/11 kt
Max gust: 17 kt
Lowest ceiling:
Lowest vis:
Prevailing wind: NW
Category changes: 0
Last 7 days
VFR 100%
Wind avg/max: 8/15 kt
Max gust: 25 kt
Lowest ceiling:
Lowest vis: 10 sm
Prevailing wind: NW
Category changes: 0
Active Runway - past 30 days
NW/SE
100%

TAF — Terminal Aerodrome Forecast

Issued 0520Z (10:20 PM PDT)

TAF KSCK 290520Z 2906/3006 27009KT P6SM SKC FM290800 31006KT P6SM SKC FM291800 28007KT P6SM SKC FM300100 28011G17KT P6SM SKC

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Nearby TFRs

Active FAA TFRs near S74

FAA TFR data shows an active temporary flight restriction near S74.

Security TFR
Concord, CA
Active 24.9 NM from S74
Effective: Monday, July 20, 2026 through Tuesday, September 15, 2026 Local
NOTAM: 6/6491

View all active US TFRs → · Official FAA TFR ↗

Verify with official FAA TFR sources before flight.

Airport facts

Reference data from the OurAirports dataset.

Type
Seaplane base
FAA LID
S74
City
Stockton
State
California
Country
United States
Elevation
0 ft
Coordinates
38.0041, -121.4570
Runways
2
Longest runway
4,000 ft
Weather reporting
Nearest station KSCK
TAF
Nearest KSCK
Time zone
America/Los_Angeles
Next sunset
21h 48m

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Nearby airports

Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.

RC flying fields nearby

AMA model-aircraft club fields around this airport — live wind, crosswind & flyability on each page.

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S74 weather — frequently asked

What runways are available at S74?+

S74 has 2 runways — NW, SE; the longest is 4,000 ft. This page computes the live crosswind for each runway end from the current wind.

Where does the weather shown for S74 come from?+

Lost Isle Seaplane Base does not have its own weather station. Conditions shown here come from the nearest reporting station, KSCK, about 12 nm away — close enough for situational awareness, but local conditions at S74 can differ.

Does S74 have a TAF?+

Yes — the KSCK TAF is shown on this page below the current conditions.

Does S74 broadcast D-ATIS?+

No — S74 does not broadcast D-ATIS. Alerts for S74 from the ATIS Alerts bot (@atisalerts_bot) are based on its METAR (via the nearest reporting station) instead.

Pilot PIREPs for Lost Isle Seaplane Base (S74)

Community-submitted

Community-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.

Read recent community-submitted pilot notes for Lost Isle 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 S74 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.

From the ATIS Alerts team

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