ATIS Alerts

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

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

The Peninsula Airport (21MU) is a general aviation airport serving pilots in and around Shell Knob, MO at 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. Its 2 runways (18, 36) — longest 2,800 ft — are checked against the current wind in the crosswind table below. The nearest TAF is issued for KBBG. Track it in the ATIS Alerts Telegram bot to get alerts read from KFWB, the station this page is based on.

VFR
Observed 0335Z (10:35 PM CDT)live · refreshes every 60s

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

Wind
Calm
Visibility
8 sm
Ceiling
Unlimited
Altimeter
29.89"
Temp / Dew
27°C / 81°F
dew 23°C

Wind calm, visibility 8 statute miles, no cloud data, temperature 27°C (81°F), altimeter 29.89 inHg. Conditions are Visual Flight Rules (VFR).

Raw METAR
METAR KFWB 290335Z AUTO 00000KT 8SM CLR 27/23 A2989 RMK AO2

What changed at KFWB (nearest station)?

Since the 0315Z (10:15 PM CDT) report — compared automatically against the latest METAR.

No significant changes since the 0315Z report — conditions are holding steady.

This is exactly what ATIS Alerts watches for you — get a Telegram message when 21MU's weather changes, free →

Current pilot readout for 21MU

Based on the nearest station (KFWB), 21MU is currently VFR with calm winds, visibility 8 statute miles, and no ceiling reported. Density altitude is approximately 2,750 ft (field elevation 1,015 ft). 21MU does not publish a TAF — the nearest TAF station is KBBG, about 15 nm away.

⚠️ 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 21MU. This is intended as a planning aid only and should not replace official performance calculations or pilot judgment.

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
18
36

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
061304Z15Z03Z

Over the last 23 h: wind 00 kt, ceiling unlimitedunlimited.

21MU weather radar

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

Live weather radar around The Peninsula Airport in Shell Knob, MO: 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 21MU 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 21MU

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

PIREP0004Z (7:04 PM CDT) · 88 NM SW of 21MU · during climb · E545
light rime 21,000–23,000 ft icing
Show raw report
TQH UA /OV TQH180010/TM 0004/FL210/TP E545/IC LGT RIME 210-230/RM DURC ZME
TQH UAHeader — reporting station and UA: a routine pilot report.
OV TQH180010Location — fix or navaid, optionally with a radial and distance in NM.
TM 0004Reported at 00:04 UTC.
FL210Altitude: 21,000 ft MSL.
TP E545Aircraft type reporting.
IC LGT RIME 210-230Icing: light rime 21,000–23,000 ft.
RM DURC ZMERemarks.
PIREP0002Z (7:02 PM CDT) · 49 NM NE of 21MU · during descent · AA1
Show raw report
UNO UA /OV SGF110025-KUNO /TM 0002 /FL055 /TP AA1 /TB NEG BLO 055 /RM DURD
UNO UAHeader — reporting station and UA: a routine pilot report.
OV SGF110025-KUNOLocation — fix or navaid, optionally with a radial and distance in NM.
TM 0002Reported at 00:02 UTC.
FL055Altitude: 5,500 ft MSL.
TP AA1Aircraft type reporting.
TB NEG BLO 055Turbulence: none reported blo 055.
RM DURDRemarks.
PIREP2351Z (6:51 PM CDT) · 75 NM S of 21MU · 21,000 ft MSL · TBM8
moderate clear 21,000–24,000 ft icing
Show raw report
FSM UA /OV FSM090030/TM 2351/FL210/TP TBM8/TA M12/IC MOD CLR 210-240/RM ZME
FSM UAHeader — reporting station and UA: a routine pilot report.
OV FSM090030Location — fix or navaid, optionally with a radial and distance in NM.
TM 2351Reported at 23:51 UTC.
FL210Altitude: 21,000 ft MSL.
TP TBM8Aircraft type reporting.
TA M12Outside air temperature, °C.
IC MOD CLR 210-240Icing: moderate clear 21,000–24,000 ft.
RM ZMERemarks.
PIREP2326Z (6:26 PM CDT) · 88 NM E of 21MU · 21,000 ft MSL · SW4
light to moderate rime icing
Show raw report
ARG UA /OV ARG315055/TM 2326/FL210/TP SW4/IC LGT-MOD RIME/RM ZME
ARG UAHeader — reporting station and UA: a routine pilot report.
OV ARG315055Location — fix or navaid, optionally with a radial and distance in NM.
TM 2326Reported at 23:26 UTC.
FL210Altitude: 21,000 ft MSL.
TP SW4Aircraft type reporting.
IC LGT-MOD RIMEIcing: light to moderate rime.
RM ZMERemarks.
PIREP2315Z (6:15 PM CDT) · 47 NM NE of 21MU · 5,500 ft MSL · AA1
Show raw report
SGF UA /OV SGF-SGF110025 /TM 2315 /FL055 /TP AA1 /WX FV03SM HZ /TB NEG /RM FV PREDOMINANTLY 7SM OCNL 3SM IN HZ
SGF UAHeader — reporting station and UA: a routine pilot report.
OV SGF-SGF110025Location — fix or navaid, optionally with a radial and distance in NM.
TM 2315Reported at 23:15 UTC.
FL055Altitude: 5,500 ft MSL.
TP AA1Aircraft type reporting.
WX FV03SM HZWeather and flight visibility observed.
TB NEGTurbulence: none reported.
RM FV PREDOMINANTLY 7SM OCNL…Remarks.
PIREP2300Z (6:00 PM CDT) · 66 NM NW of 21MU · during climb · AA1
Show raw report
SGF UA /OV KFSK-SGF /TM 2300 /FL055 /TP AA1 /TB NEG BLO 055 /RM DURC
SGF UAHeader — reporting station and UA: a routine pilot report.
OV KFSK-SGFLocation — fix or navaid, optionally with a radial and distance in NM.
TM 2300Reported at 23:00 UTC.
FL055Altitude: 5,500 ft MSL.
TP AA1Aircraft type reporting.
TB NEG BLO 055Turbulence: none reported blo 055.
RM DURCRemarks.
PIREP2256Z (5:56 PM CDT) · 15 NM E of 21MU · 22,000 ft MSL · E550
light clear icing
Show raw report
HRO UA /OV BBG/TM 2256/FL220/TP E550/TA M10/IC LGT CLR/RM ZME
HRO UAHeader — reporting station and UA: a routine pilot report.
OV BBGLocation — fix or navaid, optionally with a radial and distance in NM.
TM 2256Reported at 22:56 UTC.
FL220Altitude: 22,000 ft MSL.
TP E550Aircraft type reporting.
TA M10Outside air temperature, °C.
IC LGT CLRIcing: light clear.
RM ZMERemarks.

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

Recent aviation weather trends at 21MU

From ATIS Alerts' hourly weather history.

Over the past 24 hours, the nearest station KFWB reported mostly VFR across 71 observations, with 3 flight-category changes. The strongest gust reached 11 kt, the lowest ceiling was 11,000 ft. Wind most often came from the W.

Last 24 hours
VFR 97%MVFR 1%IFR 1%
Wind avg/max: 3/9 kt
Max gust: 11 kt
Lowest ceiling: 11,000 ft
Lowest vis:
Prevailing wind: W
Category changes: 3

Most recent change: MVFRVFR

Last 7 days
VFR 85%MVFR 15%
Wind avg/max: 4/12 kt
Max gust: 18 kt
Lowest ceiling: 2,000 ft
Lowest vis: 3 sm
Prevailing wind: NE
Category changes: 20

Most recent change: MVFRVFR

Active Runway - past 30 days
18/36
100%

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Airport facts

Reference data from the OurAirports dataset.

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
2
Longest runway
2,800 ft
Weather reporting
Nearest station KFWB
TAF
Nearest KBBG
Time zone
America/Chicago
Next sunset
21h 28m

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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.

All RC flying fields →

See all Missouri airports →

21MU weather — frequently asked

What runways are available at 21MU?+

21MU has 2 runways — 18, 36; the longest is 2,800 ft. This page computes the live crosswind for each runway end from the current wind.

Where does the weather shown for 21MU come from?+

The Peninsula Airport does not have its own weather station. Conditions shown here come from the nearest reporting station, KFWB, about 10 nm away — close enough for situational awareness, but local conditions at 21MU can differ.

Does 21MU have a TAF?+

No — 21MU does not publish its own TAF. The nearest TAF station is KBBG, about 15 nm away.

Does 21MU broadcast D-ATIS?+

No — 21MU does not broadcast D-ATIS. Alerts for 21MU from the ATIS Alerts bot (@atisalerts_bot) are based on its METAR (via the nearest reporting station) instead.

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.

From the ATIS Alerts team

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