ATIS Alerts

Larson Airport (WI91) Area Aviation Weather & Runway Winds

Aviation weather near Larson Airport in Larsen, WI, decoded from the nearest reporting station (KOSH) — conditions, runway crosswinds, and free Telegram airport alerts.

Larson Airport (WI91) is a general aviation airport serving pilots in and around Larsen, WI at 800 ft. WI91 has no weather station of its own — conditions here are decoded from KOSH, about 14 nm away, the nearest reporting station, and local conditions can differ. Its 2 runways (18, 36) — longest 2,300 ft — are checked against the current wind in the crosswind table below. The nearest TAF is issued for KGRB. Track it in the ATIS Alerts Telegram bot to get alerts read from KOSH, the station this page is based on.

VFR
Observed 0653Z (1:53 AM CDT)live · refreshes every 60s

No weather station at this airport — showing the nearest station KOSH, 13.6 nm away.

Wind
Calm
Visibility
10+ sm
Ceiling
Unlimited
Altimeter
29.97"
Temp / Dew
19°C / 66°F
dew 14°C

Wind calm, visibility 10+ statute miles, no cloud data, temperature 19°C (66°F), altimeter 29.97 inHg. Conditions are Visual Flight Rules (VFR).

Raw METAR
METAR KOSH 290653Z AUTO 00000KT 10SM CLR 19/14 A2997 RMK AO2 SLP139 T01890139

What changed at KOSH (nearest station)?

Since the 0553Z (12:53 AM CDT) report — compared automatically against the latest METAR.

No significant changes since the 0553Z report — conditions are holding steady.

This is exactly what ATIS Alerts watches for you — get a Telegram message when WI91's weather changes, free →

Current pilot readout for WI91

Based on the nearest station (KOSH), WI91 is currently VFR with calm winds, visibility 10+ statute miles, and no ceiling reported. Density altitude is approximately 1,400 ft (field elevation 800 ft). WI91 does not publish a TAF — the nearest TAF station is KGRB, about 28 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 WI91. 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
0112207Z17Z06Z

Over the last 23 h: wind 100 kt, ceiling 1,600 ftunlimited.

WI91 weather radar

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

Live weather radar around Larson Airport in Larsen, WI: 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 WI91 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 WI91

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

PIREP0340Z (10:40 PM CDT) · 82 NM SE of WI91 · during descent · A319
Show raw report
MKE UA /OV MKE190000/TM 0340/FL000/TP A319/WV 010004/RM NEG WINDSHEAR-MICROBURST ON FINAL
MKE UAHeader — reporting station and UA: a routine pilot report.
OV MKE190000Location — fix or navaid, optionally with a radial and distance in NM.
TM 0340Reported at 03:40 UTC.
FL000Altitude: 0 ft MSL.
TP A319Aircraft type reporting.
WV 010004Wind (direction/speed) or wind-shear remarks.
RM NEG WINDSHEAR-MICROBURST …Remarks.
PIREP0217Z (9:17 PM CDT) · 72 NM W of WI91 · 13,000 ft MSL · C441
Show raw report
VOK UA /OV VOK/TM 0217/FL130/TP C441/TB NEG
VOK UAHeader — reporting station and UA: a routine pilot report.
OV VOKLocation — fix or navaid, optionally with a radial and distance in NM.
TM 0217Reported at 02:17 UTC.
FL130Altitude: 13,000 ft MSL.
TP C441Aircraft type reporting.
TB NEGTurbulence: none reported.
PIREP0215Z (9:15 PM CDT) · 43 NM SE of WI91 · 20,000 ft MSL · PC12
Show raw report
SBM UA /OV SBM/TM 0215/FL200/TP PC12/TB NEG
SBM UAHeader — reporting station and UA: a routine pilot report.
OV SBMLocation — fix or navaid, optionally with a radial and distance in NM.
TM 0215Reported at 02:15 UTC.
FL200Altitude: 20,000 ft MSL.
TP PC12Aircraft type reporting.
TB NEGTurbulence: none reported.
PIREP0206Z (9:06 PM CDT) · 70 NM SW of WI91 · 19,000 ft MSL · BCS1
Show raw report
MSN UA /OV MSN/TM 0206/FL190/TP BCS1/TB NEG
MSN UAHeader — reporting station and UA: a routine pilot report.
OV MSNLocation — fix or navaid, optionally with a radial and distance in NM.
TM 0206Reported at 02:06 UTC.
FL190Altitude: 19,000 ft MSL.
TP BCS1Aircraft type reporting.
TB NEGTurbulence: none reported.
PIREP0205Z (9:05 PM CDT) · 53 NM SW of WI91 · 20,000 ft MSL · E75S
Show raw report
MSN UA /OV C47/TM 0205/FL200/TP E75S/TB NEG
MSN UAHeader — reporting station and UA: a routine pilot report.
OV C47Location — fix or navaid, optionally with a radial and distance in NM.
TM 0205Reported at 02:05 UTC.
FL200Altitude: 20,000 ft MSL.
TP E75SAircraft type reporting.
TB NEGTurbulence: none reported.

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

Recent aviation weather trends at WI91

From ATIS Alerts' hourly weather history.

Over the past 24 hours, the nearest station KOSH reported mostly VFR across 27 observations, with 1 flight-category change. The strongest gust reached 19 kt, the lowest ceiling was 1,400 ft. Wind most often came from the N.

Last 24 hours
VFR 78%MVFR 22%
Wind avg/max: 7/14 kt
Max gust: 19 kt
Lowest ceiling: 1,400 ft
Lowest vis:
Prevailing wind: N
Category changes: 1

Most recent change: MVFRVFR

Last 7 days
VFR 85%MVFR 13%IFR 1%LIFR 1%
Wind avg/max: 6/15 kt
Max gust: 21 kt
Lowest ceiling: 200 ft
Lowest vis: 1.75 sm
Prevailing wind: S
Category changes: 15

Most recent change: MVFRVFR

Active Runway - past 30 days
18/36
100%

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Nearby TFRs

Active FAA TFRs near WI91

FAA TFR data shows an active temporary flight restriction near WI91.

Hazard TFR
0.5NM NE MENASHA, WI
Active 6.8 NM from WI91
Effective: Tuesday, July 28, 2026 through Saturday, August 1, 2026 UTC
NOTAM: 6/9803

View all active US TFRs → · Official FAA TFR ↗

Verify with official FAA TFR sources before flight.

Airport facts

Reference data from the OurAirports dataset.

Type
General aviation airport
FAA LID
WI91
City
Larsen
State
Wisconsin
Country
United States
Elevation
800 ft
Coordinates
44.2028, -88.6396
Runways
2
Longest runway
2,300 ft
Weather reporting
Nearest station KOSH
TAF
Nearest KGRB
Time zone
America/Chicago
Next sunset
18h 24m

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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 Wisconsin airports →

WI91 weather — frequently asked

What runways are available at WI91?+

WI91 has 2 runways — 18, 36; the longest is 2,300 ft. This page computes the live crosswind for each runway end from the current wind.

Where does the weather shown for WI91 come from?+

Larson Airport does not have its own weather station. Conditions shown here come from the nearest reporting station, KOSH, about 14 nm away — close enough for situational awareness, but local conditions at WI91 can differ.

Does WI91 have a TAF?+

No — WI91 does not publish its own TAF. The nearest TAF station is KGRB, about 28 nm away.

Does WI91 broadcast D-ATIS?+

No — WI91 does not broadcast D-ATIS. Alerts for WI91 from the ATIS Alerts bot (@atisalerts_bot) are based on its METAR (via the nearest reporting station) instead.

Pilot PIREPs for Larson Airport (WI91)

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 Larson 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 WI91 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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