WxDecoder

RJAF/MMJ METAR Shinshu-Matsumoto Airport

Matsumoto, Nagano PrefectureElevation 2,182 ftMedium airport
CURRENT STATUS
VFRMore than 1 hour old
Ceiling 11,000 ft, visibility 10 SM.
FLIGHT CATEGORY
VFR
ceiling & visibility
WIND
VRB@2
steady
VISIBILITY
10 SM
16.1 km
CEILING
11,000 ft
lowest BKN/OVC
DENSITY ALT
2,674 ft
+492 ft vs field
CURRENT METAR

Decoded observation

Observed 0900Z (6:00 PM local) · More than 1 hour old

RJAF is currently VFR. Winds are variable in direction at 2 knots. Visibility is 10 statute miles. The ceiling is 11,000 feet AGL. The main issue is metar is 660 minutes old.

WIND
Variable at 2 kt
Steady.
VISIBILITY
10 statute miles
16.1 km, good.
CEILING & SKY
Ceiling 11,000 ft
Lowest broken or overcast layer.
TEMP / DEWPOINT
16°C / 16°C
61°F / 61°F. 0°C spread.
ALTIMETER
30.06 inHg
1017.9 hPa, above standard.
WEATHER & HAZARDS
No significant hazards
No precipitation or obscuration reported.

Codes in this report: 9999 FEW SCT BKN

Hover or tap any group for a plain-English explanation.

SUGGESTED RISK · TRAINING USE

Suggested risk level: Moderate

›METAR is stale (660 minutes old).
›No TAF available for this airport.

A suggested risk level for training and situational awareness only, not a go/no-go authority. Verify with official sources and apply your personal minimums.

FORECAST & PILOT NOTES · SUPPLEMENTAL

Pilot weather notes

Current aviation conditions show flight category VFR, wind variable at 2 kt, visibility 10 SM, ceiling 11,000 ft. This report is older than usual, so treat it with caution. No extended National Weather Service forecast is available for this location. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

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RUNWAYS & WIND
1 runway · crosswind ranking
NESW1836VRB 2 ktVRB 2 ktVRB 2 ktVRB 2 ktVRB 2 kt
WIND USED
Wind calm or variable
Crosswind ranking is unavailable until the wind has a steady direction.
Components are estimates from the current METAR wind and runway heading. Verify with the Chart Supplement and NOTAMs.
RUNWAYS

Runway detail

18/36
Dimensions
6,560 x 150 ft
Surface
ASP
Lighting
Lighted
FIELD CONDITIONS

Performance & density altitude

Density altitude
2,674 ft
Pressure altitude
2,042 ft
Field elevation
2,182 ft MSL
Temperature
16°C (61°F)
Dewpoint
16°C (61°F)
Altimeter
30.06 inHg

Density altitude estimates how the aircraft performs versus standard atmosphere. Higher density altitude reduces climb performance and increases takeoff distance.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0800Z 5:00 PM
Sunrise
2104Z 6:04 AM
Loggable night
0827Z (5:27 PM local) → 2038Z (5:38 AM local)
end of evening to start of morning civil twilight
Position lights required
0800Z (5:00 PM local) → 2104Z (6:04 AM local)
sunset to sunrise (91.209)
Night passenger currency
0900Z (6:00 PM local) → 2004Z (5:04 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Shinshu-Matsumoto Airport is in Matsumoto, Nagano Prefecture. Field elevation 2,182 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
UseScheduled service
TypeMedium airport
Airline serviceYes
CHARTS & AIRSPACE
ICAO / IATARJAF / MMJ
RegionNagano Prefecture
CountryJapan
Coordinates36.1668, 137.9230
SERVICES & LIGHTING
Control towerNon-towered
FREQUENCIES

Communications

132.45
TOKYO CON
ACC
118.65
RDO
RDO

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

Current flight category at nearby reporting stations.

RJNT Toyama Kitokito Airport
46 NM NW
VFR
RJTY Yokota Air Base
74 NM E
MVFR
RJNK Komatsu Airport / JASDF Komatsu Air Base
75 NM W
VFR
RJNW Noto Satoyama Airport
82 NM NW
VFR
RJNS Mount Fuji Shizuoka Airport
83 NM S
LIFR
RJGG Chubu Centrair International Airport
96 NM SW
MVFR
OFFICIAL LINKS & SOURCES
↗Official METAR on AviationWeather.gov
↗Official airport website
↗Wikipedia
↗RJAF on OurAirports
FREQUENTLY ASKED
Does RJAF have a METAR?
Yes. RJAF has a current METAR observation, decoded into plain English on this page.
Does RJAF have a TAF?
When RJAF issues a TAF, its decoded forecast timeline loads live on this page; otherwise use the nearest TAF-issuing field as a planning reference.
What is the field elevation at RJAF?
RJAF sits at 2,182 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for RJAF?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.