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Mercer Ranch Airport (WA00) Area Aviation Weather & Runway Winds

As of 10:15 AM PDT, Oct 28, based on the nearest station (K1S5), WA00 is currently VFR with calm winds, visibility 10+ statute miles, and no ceiling reported.

Aviation weather near Mercer Ranch Airport in Alderdale, WA, decoded from the nearest reporting station (K1S5): conditions and runway crosswinds.

Mercer Ranch Airport (WA00) is a general aviation airport serving pilots in and around Alderdale, WA at a field elevation of 780 ft. WA00 has no weather station of its own. Conditions here are decoded from K1S5, about 26 nm away, the nearest reporting station, and local conditions can differ. It has one runway (05/23), the longest 2,200 ft. The nearest TAF is issued for KPSC.

Ask ATIS AIAsk anything about WA00's weather, runways or delays, or search another airport.
VFR
Observed 1715Z (10:15 AM PDT)live · refreshes every 60s

No weather station at this airport: showing the nearest station K1S5, 25.8 nm away.

Wind
Calm
Visibility
10+ sm
Ceiling
Unlimited
Altimeter
29.93"
Temp / Dew
53°F / 12°C
dew 39°F / 4°C

Wind calm, visibility 10+ statute miles, scattered clouds at 5,500 ft, scattered clouds at 7,000 ft, scattered clouds at 10,000 ft, temperature 12°C (53°F), altimeter 29.93 inHg. Conditions are Visual Flight Rules (VFR).

Raw METAR
METAR K1S5 281715Z AUTO 00000KT 10SM SCT055 SCT070 SCT100 12/04 A2993 RMK AO2 T01180037

What changed at K1S5 (nearest station)?

Since the 1655Z (9:55 AM PDT) report, compared automatically against the latest METAR.

No significant changes since the 1655Z (9:55 AM PDT) report, conditions are holding steady.

Current pilot readout for WA00

Based on the nearest station (K1S5), WA00 is currently VFR with calm winds, visibility 10+ statute miles, and no ceiling reported. Density altitude is approximately 550 ft (field elevation 780 ft). WA00 does not publish a TAF. The nearest TAF station is KPSC, about 40 nm away.

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.

RunwayHead / TailCrosswind
05--
23--

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

WA00 runways

1 physical runway · 2 runway ends. Each card opens the runway's intelligence page: equipment and lighting, LAHSO, frequencies, today's configuration, predicted use, history and approaches.

  • Runway 05/23
    2,200 × 40 ft · GRVL
    Status not monitored
    Current use
    no stated-runway source at WA00
    Wind
    05
    no steady wind
    23
    no steady wind
    no active equipment NOTAM receivedView Runway Intelligence →

“Current use” is what the facilitystates; wind components are arithmetic on the current METAR against TRUE headings; status reflects NOTAMs received through SWIM, the tower's TFDM record and the D-ATIS — a runway reads “Open” only with a complete NOTAM picture.

24-hour trend

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

Wind (kt)Gusts (kt)Bottom strip, flight category:VFRMVFRIFRLIFRNo report
0132617Z06Z17Z

Over the last 24 h: wind 0→0 kt, ceiling unlimited → unlimited.

WA00 weather radar

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

Loading…
Loading radar…

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 WA00

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

PIREP1716Z (10:16 AM PDT) · 46 NM NW of WA00 · during descent · C208
Show raw report
YKM UA /OV YKM/TM 1716/FLDURD/TP C208/TB NEG/RM SMOOTH ALL THE WAY DOWN FINAL RY27
YKM UAHeader: reporting station and UA: a routine pilot report.
OV YKMLocation: fix or navaid, optionally with a radial and distance in NM.
TM 1716Reported at 17:16 UTC.
FLDURDReported during descent.
TP C208Aircraft type reporting.
TB NEGTurbulence: none reported.
RM SMOOTH ALL THE WAY DOWN F…Remarks.
PIREP1708Z (10:08 AM PDT) · 90 NM W of WA00 · 12,000 ft MSL · S22T
light-moderate rime icing
Show raw report
PDX UA /OV PDX080025/TM 1708/FL120/TP S22T/TA -13/IC LIGHT-MODERATE RIME ICING/RM LIGHT RIME ICING 095-070
PDX UAHeader: reporting station and UA: a routine pilot report.
OV PDX080025Location: fix or navaid, optionally with a radial and distance in NM.
TM 1708Reported at 17:08 UTC.
FL120Altitude: 12,000 ft MSL.
TP S22TAircraft type reporting.
TA -13Outside air temperature, °C.
IC LIGHT-MODERATE RIME ICINGIcing: light-moderate rime icing.
RM LIGHT RIME ICING 095-070Remarks.
PIREP1702Z (10:02 AM PDT) · 41 NM NE of WA00 · 4,000 ft MSL · E75L
Show raw report
PSC UA /OV PSC310010/TM 1702/FL040/TP E75L/TB NEG/RM DURD FL040-SFC
PSC UAHeader: reporting station and UA: a routine pilot report.
OV PSC310010Location: fix or navaid, optionally with a radial and distance in NM.
TM 1702Reported at 17:02 UTC.
FL040Altitude: 4,000 ft MSL.
TP E75LAircraft type reporting.
TB NEGTurbulence: none reported.
RM DURD FL040-SFCRemarks.
PIREP1635Z (9:35 AM PDT) · 86 NM NE of WA00 · 8,000 ft MSL · C208
occasional light mixed icing
Show raw report
MWH UA /OV MWH090025/TM 1635/FL080/TP C208/SK OCNL IMC/TA M06/IC OCNL LGT MIXED
MWH UAHeader: reporting station and UA: a routine pilot report.
OV MWH090025Location: fix or navaid, optionally with a radial and distance in NM.
TM 1635Reported at 16:35 UTC.
FL080Altitude: 8,000 ft MSL.
TP C208Aircraft type reporting.
SK OCNL IMCSky condition: cloud bases and tops in hundreds of feet MSL.
TA M06Outside air temperature, °C.
IC OCNL LGT MIXEDIcing: occasional light mixed.
PIREP1633Z (9:33 AM PDT) · 43 NM NW of WA00 · 2,300 ft MSL · C408
light blo 040 turbulence
Show raw report
YKM UA /OV YKM090004/TM 1633/FL023/TP C408/TB LGT BLO 040
YKM UAHeader: reporting station and UA: a routine pilot report.
OV YKM090004Location: fix or navaid, optionally with a radial and distance in NM.
TM 1633Reported at 16:33 UTC.
FL023Altitude: 2,300 ft MSL.
TP C408Aircraft type reporting.
TB LGT BLO 040Turbulence: light blo 040.
PIREP1615Z (9:15 AM PDT) · 43 NM E of WA00 · during climb · PC12
light chop turbulence
Show raw report
PDT UA /OV PDT/TM 1615/FL041/TP PC12/TB LGT CHOP/RM DURC
PDT UAHeader: reporting station and UA: a routine pilot report.
OV PDTLocation: fix or navaid, optionally with a radial and distance in NM.
TM 1615Reported at 16:15 UTC.
FL041Altitude: 4,100 ft MSL.
TP PC12Aircraft type reporting.
TB LGT CHOPTurbulence: light chop.
RM DURCRemarks.
PIREP1606Z (9:06 AM PDT) · 86 NM NE of WA00 · 8,000 ft MSL · C408
light mx icing
Show raw report
MWH UA /OV MWH090025/TM 1606/FL080/TP C408/IC LGT MX
MWH UAHeader: reporting station and UA: a routine pilot report.
OV MWH090025Location: fix or navaid, optionally with a radial and distance in NM.
TM 1606Reported at 16:06 UTC.
FL080Altitude: 8,000 ft MSL.
TP C408Aircraft type reporting.
IC LGT MXIcing: light mx.
PIREP1534Z (8:34 AM PDT) · 82 NM N of WA00 · during climb · B735
light rme icing
Show raw report
MWH UA /OV KMWH/TM 1534/FL055/TP B735/SK OVC 055/IC LGT RME/RM DURC 32R. TEMP 6C
MWH UAHeader: reporting station and UA: a routine pilot report.
OV KMWHLocation: fix or navaid, optionally with a radial and distance in NM.
TM 1534Reported at 15:34 UTC.
FL055Altitude: 5,500 ft MSL.
TP B735Aircraft type reporting.
SK OVC 055Sky condition: cloud bases and tops in hundreds of feet MSL.
IC LGT RMEIcing: light rme.
RM DURC 32R. TEMP 6CRemarks.

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

Recent aviation weather trends at WA00

From ATIS Alerts' hourly weather history.

Over the past 24 hours, the nearest station K1S5 reported mostly VFR across 68 observations, with 0 flight-category changes. The strongest gust reached 23 kt, the lowest ceiling was 5,500 ft. Wind most often came from the SW.

Last 24 hours
VFR 100%
Wind avg/max: 6/16 kt
Max gust: 23 kt
Lowest ceiling: 5,500 ft
Lowest vis: -
Prevailing wind: SW
Category changes: 0
Last 7 days
VFR 90%MVFR 6%IFR 2%LIFR 2%
Wind avg/max: 2/13 kt
Max gust: 22 kt
Lowest ceiling: 200 ft
Lowest vis: 0.25 sm
Prevailing wind: W
Category changes: 22

Most recent change: LIFR → VFR

Wind-favored runway - past 30 days

Share of hours each runway had the most headwind. From wind reports, not ATC assignments.

23
54%
05
46%

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No live weather from WA00

Live crosswind meter

WA00 has no weather feed online, so the wind comes from K1S5, 26 nm away.

N0523wind calm / variable

Wind is calm or variable. Either end works.

Have a weather station at WA00? Help us make your field's weather available to every pilot, free. Add your field's wx station →

Gravel · 2,200 ft. Headings from FAA runway data. Not for navigation.

Field aerial

North up

Aerial photo of Mercer Ranch Airport (WA00)
N ↑

Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit

Airport info

From the FAA airport record (cycle 2026-10-01) and OurAirports.

Services

Attended
Unattended
Control tower
None
Wind indicator
Unlighted

Airport

Type
General aviation airport
FAA LID
WA00
City
Alderdale
State
Washington
Country
United States
Elevation
780 ft
Coordinates
45.8985, -119.9156
Runways
1 physical runway · 2 runway ends
Longest runway
2,200 ft
Weather reporting
Nearest station K1S5
TAF
Nearest KPSC
Time zone
America/Los_Angeles
Sunset in
7h 21m

Run a flight school, FBO, or club here? Embed WA00's live status on your website, free →

Nearby airports

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

VFRMVFRIFRLIFRNo report
See all Washington airports →

Pilot PIREPs for Mercer Ranch Airport (WA00)

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 Mercer Ranch Airport, 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 WA00 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.

Spotted incorrect airport info? ✏️ Suggest an edit

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