Skip to content
Know before you taxi

All Products

My Airports

Your shortcuts, saved on this device. Search to add an airport.

No airports saved yet. Add the fields you visit most.

Ask ATIS

The Peninsula Airport (21MU) Area Aviation Weather & Runway Winds

As of 5:55 AM CDT, Oct 28, based on the nearest station (KFWB), 21MU has no current flight category, but is reporting with winds from 080° at 4 knots, visibility not reported, and no ceiling reported.

Aviation weather near The Peninsula Airport in Shell Knob, MO, decoded from the nearest reporting station (KFWB): conditions and runway crosswinds.

The Peninsula Airport (21MU) is a general aviation airport serving pilots in and around Shell Knob, MO at a field elevation of 1,015 ft. 21MU has no weather station of its own. Conditions here are decoded from KFWB, about 10 nm away, the nearest reporting station, and local conditions can differ. It has one runway (18/36), the longest 2,800 ft. The nearest TAF is issued for KBBG.

Ask ATIS AIAsk anything about 21MU's weather, runways or delays, or search another airport.
No data
Observed 1055Z (5:55 AM CDT)live · refreshes every 60s

No weather station at this airport: showing the nearest station KFWB, 9.5 nm away.

Wind
080° 4 kt
Visibility
-
Ceiling
Unlimited
Altimeter
30.18"
Temp / Dew
55°F / 13°C
dew 48°F / 9°C

Wind from the east (080°) at 4 kt, visibility visibility not reported, no cloud data, temperature 13°C (55°F), altimeter 30.18 inHg.

Raw METAR
METAR KFWB 281055Z AUTO 08004KT 13/09 A3018 RMK AO2

What changed at KFWB (nearest station)?

Since the 1035Z (5:35 AM CDT) report, compared automatically against the latest METAR.

No significant changes since the 1035Z (5:35 AM CDT) report, conditions are holding steady.

Current pilot readout for 21MU

Based on the nearest station (KFWB), 21MU has no current flight category, but is reporting with winds from 080° at 4 knots, visibility not reported, and no ceiling reported. the wind favors north-facing runway ends (36). Density altitude is approximately 700 ft (field elevation 1,015 ft). 21MU does not publish a TAF. The nearest TAF station is KBBG, about 15 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.

RunwayHead / TailCrosswind
36FAV1 kt head4 kt right
181 kt tail4 kt left

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

21MU 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 18/36
    2,800 × 40 ft · TURF-G
    Status not monitored
    Current use
    no stated-runway source at 21MU
    Wind
    18
    1 kt tailwind · 4 kt crosswind from left
    36
    1 kt headwind · 4 kt crosswind from right
    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
0102011Z23Z10Z

Over the last 24 h: wind 0→4 kt, ceiling unlimited → unlimited.

21MU 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.

Recent aviation weather trends at 21MU

From ATIS Alerts' hourly weather history.

Over the past 24 hours, the nearest station KFWB reported varied conditions across 70 observations, with 0 flight-category changes. The strongest gust reached 17 kt. Wind most often came from the SE.

Last 24 hours
Wind avg/max: 3/9 kt
Max gust: 17 kt
Lowest ceiling: -
Lowest vis: -
Prevailing wind: SE
Category changes: 0
Last 7 days
Wind avg/max: 3/9 kt
Max gust: 13 kt
Lowest ceiling: -
Lowest vis: -
Prevailing wind: E
Category changes: 0
Wind-favored runway - past 30 days

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

18
67%
36
33%

Get 21MU weather alerts in Telegram

Stop refreshing aviation weather manually. Track 21MU 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 21MU free on Telegram

No live weather from 21MU

Live crosswind meter

21MU has no weather feed online, so the wind comes from KFWB, 9.5 nm away.

N36184 kt
Headwind
1 kt
Crosswind (from the right)
4 kt

Wind is 73° off runway 36, the end with the most headwind right now.

Have a weather station at 21MU? Help us make your field's weather available to every pilot, free. Add your field's wx station →

Turf · 2,800 ft. Headings from FAA runway data. Not for navigation.

Field aerial

North up

Aerial photo of The Peninsula Airport (21MU) with runway 18/36 marked
N ↑

Runway 18/36 drawn from FAA threshold coordinates.

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
21MU
City
Shell Knob
State
Missouri
Country
United States
Elevation
1,015 ft
Coordinates
36.5649, -93.5096
Runways
1 physical runway · 2 runway ends
Longest runway
2,800 ft
Weather reporting
Nearest station KFWB
TAF
Nearest KBBG
Time zone
America/Chicago
Next sunset
12h 10m

Run a flight school, FBO, or club here? Embed 21MU's live status on your website, free →

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.

All RC flying fields →

See all Missouri airports →

Customize your 21MU shirt or mug

21MU's real runway layout on the back, elevation and tower frequency on the front. Add your tail number on the sleeve.

Shop 21MU merch

Pilot PIREPs for The Peninsula Airport (21MU)

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 The Peninsula 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 21MU 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

How ATIS Alerts works · All US airports · Missouri airports