Snake River Seaplane Base (78U) Area Aviation Weather & Runway Winds
Aviation weather near Snake River Seaplane Base in Lewiston, ID, decoded from the nearest reporting station (KLWS) — conditions, runway crosswinds, and free Telegram airport alerts.
Snake River Seaplane Base (78U) is a seaplane base in Lewiston, ID. 78U has no weather station of its own — conditions here are decoded from KLWS, about 2 nm away, the nearest reporting station, and local conditions can differ. Its 2 runways (N, S) — longest 3,000 ft — are checked against the current wind in the crosswind table below. The nearest TAF is issued for KLWS. Track it in the ATIS Alerts Telegram bot to get alerts read from KLWS, the station this page is based on.
No weather station at this airport — showing the nearest station KLWS, 2 nm away.
Wind from the west-northwest (300°) at 9 kt, visibility 5 statute miles, no cloud data, temperature 29°C (85°F), altimeter 29.87 inHg. Conditions are Marginal VFR (MVFR).
METAR KLWS 290156Z 30009KT 5SM HZ CLR 29/07 A2987 RMK AO2 SLP103 T02940072
What changed at KLWS (nearest station)?
Since the 0056Z (5:56 PM PDT) report — compared automatically against the latest METAR.
No significant changes since the 0056Z report — conditions are holding steady.
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Current pilot readout for 78U
Based on the nearest station (KLWS), 78U is currently MVFR with winds from 300° at 9 knots, visibility 5 statute miles, and no ceiling reported. The strongest crosswind component is currently on runway N, about 8 knots. Density altitude is approximately 2,700 ft (field elevation 735 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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Track 78U free on TelegramRunway 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 78U. This is intended as a planning aid only and should not replace official performance calculations or pilot judgment.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| NFAV | 3,000 ft | WATER | 5 kt head | 8 kt left |
| S | 3,000 ft | WATER | 5 kt head | 8 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.
Over the last 23 h: wind 4→9 kt, ceiling unlimited → unlimited.
78U weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast — drag to pan, tap ⚡ to toggle lightning.
Live weather radar around Snake River Seaplane Base in Lewiston, ID: 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 78U is headed.
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 78U
Reported by pilots in flight over the past 6 hours — via aviationweather.gov.
Show raw report
PSC UA /OV PSC34018/TM 0040/FL046/TP C172/TB LGT TO MOD
PSC UAHeader — reporting station and UA: a routine pilot report.OV PSC34018Location — fix or navaid, optionally with a radial and distance in NM.TM 0040Reported at 00:40 UTC.FL046Altitude: 4,600 ft MSL.TP C172Aircraft type reporting.TB LGT TO MODTurbulence: light to moderate.Show raw report
ALW UA /OV ALW/TM 2148/FLUNKN/TP E175/WX 04SM/RM DURD
ALW UAHeader — reporting station and UA: a routine pilot report.OV ALWLocation — fix or navaid, optionally with a radial and distance in NM.TM 2148Reported at 21:48 UTC.FLUNKNAltitude unknown.TP E175Aircraft type reporting.WX 04SMWeather and flight visibility observed.RM DURDRemarks.Show raw report
ALW UA /OV ALW/TM 2116/FL034/TP BE19/WX FV05SM
ALW UAHeader — reporting station and UA: a routine pilot report.OV ALWLocation — fix or navaid, optionally with a radial and distance in NM.TM 2116Reported at 21:16 UTC.FL034Altitude: 3,400 ft MSL.TP BE19Aircraft type reporting.WX FV05SMWeather and flight visibility observed.⚠️ PIREPs are unverified pilot reports. Not for operational use — conditions change between reports.
Recent aviation weather trends at 78U
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station KLWS reported mostly VFR across 24 observations, with 1 flight-category change. The strongest gust reached 17 kt. Wind most often came from the NW.
Most recent change: VFR → MVFR
Most recent change: VFR → MVFR
- N/S
- 100%
TAF — Terminal Aerodrome Forecast
Issued 2320Z (4:20 PM PDT)
TAF KLWS 282320Z 2900/2924 32010G20KT P6SM FEW140 FM290400 26008KT P6SM FEW150 FM290800 VRB03KT P6SM FEW250 FM292000 33005KT P6SM FEW250
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Airport facts
Reference data from the OurAirports dataset.
- Type
- Seaplane base
- FAA LID
- 78U
- City
- Lewiston
- State
- Idaho
- Country
- United States
- Elevation
- 735 ft
- Coordinates
- 46.3646, -117.0620
- Runways
- 2
- Longest runway
- 3,000 ft
- Weather reporting
- Nearest station KLWS
- TAF
- Nearest KLWS
- Time zone
- America/Los_Angeles
- Sunset in
- 34m
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Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
10 airports+4 more within 25 NM
25–50 NM
6 airports50–100 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.
- Mann Lake — Lewiston, ID · 10 mi
- Palouse Region R/C Flyers - Leroy Johnson/Chambers RC Field — Pullman, WA · 20 mi
78U weather — frequently asked
What runways are available at 78U?+
78U has 2 runways — N, S; the longest is 3,000 ft. This page computes the live crosswind for each runway end from the current wind.
Where does the weather shown for 78U come from?+
Snake River Seaplane Base does not have its own weather station. Conditions shown here come from the nearest reporting station, KLWS, about 2 nm away — close enough for situational awareness, but local conditions at 78U can differ.
Does 78U have a TAF?+
Yes — the KLWS TAF is shown on this page below the current conditions.
Does 78U broadcast D-ATIS?+
No — 78U does not broadcast D-ATIS. Alerts for 78U from the ATIS Alerts bot (@atisalerts_bot) are based on its METAR (via the nearest reporting station) instead.
Pilot PIREPs for Snake River Seaplane Base (78U)
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 Snake River 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 78U 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.
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⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
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