WxDecoder

99C Weather Quams Marina Seaplane Base

Stoughton, WisconsinElevation 843 ftSeaplane base
OFF-FIELD REFERENCE
Nearest report: KMSN · 12 NM N · 38 min old
Ceiling 23,000 ft, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KMSN
WIND
330@4
steady
VISIBILITY
10 SM
16.1 km
CEILING
23,000 ft
lowest BKN/OVC
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 350° at 5 kt, visibility 10 SM, temperature 16C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy, low near 50F, 3% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Chance Showers And Thunderstorms. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Cloudy 50 N 4 kt – 3%
Monday Mostly Cloudy 59/46 NE 9 kt – 10%
Tuesday Mostly Cloudy 67/54 SE 9 kt – 10%
Wednesday Mostly Sunny 72/56 S 9 kt – 44%
Thursday Chance Showers And Thunderstorms 71/52 SW 9 kt – 44% Thunderstorms in the forecast
Friday Chance Rain Showers 70/55 SE 9 kt – 39%
Saturday Chance Rain Showers 69/54 SE 9 kt – 58%
Sunday Chance Rain Showers 66 W 9 kt – 33%

Source: National Weather Service (office MKX). Forecast issued 0231Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
Crosswind calculator
No runway layout is available for 99C. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail

ALL/WAY
Dimensions
15,000 x 4,000 ft
Surface
WATER
FIELD CONDITIONS

Field elevation

Field elevation
843 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2259Z 5:59 PM
Sunrise
1223Z 7:23 AM
Loggable night
2328Z (6:28 PM local) → 1154Z (6:54 AM local)
end of evening to start of morning civil twilight
Position lights required
2259Z (5:59 PM local) → 1223Z (7:23 AM local)
sunset to sunrise (91.209)
Night passenger currency
2359Z (6:59 PM local) → 1123Z (6:23 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

Quams Marina Seaplane Base is in Stoughton, Wisconsin. Field elevation 843 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeSeaplane base
CHARTS & AIRSPACE
ICAO / IATA99C
RegionWisconsin
CountryUnited States
Coordinates42.9511, -89.2710
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

99C traffic patterns

2026-09-26 to 2026-09-26, 1 days observed · data 2026-10-23

Low confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
1
AVG OPS/DAY
2
Operations trend (1 days)

Busiest day: Sat · Busiest month: Sep

FLEET MIX
Helicopter 100%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›V22 (Helicopter) · ~1 landings/mo
Data limitations (4)
›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.
›Some aircraft do not transmit usable ADS-B and are not counted.
›Aircraft types and based estimates are inferred and may be wrong.
›This is not official ATC, FAA, or airport data.
NEARBY AIRPORTS

Weather reference stations

99C has no on-field report. Nearest reporting station: KMSN (12 NM N, VFR).

KMSN Dane County Regional Truax Field
12 NM N
VFR
KJVL Southern Wisconsin Regional Airport
22 NM SE
VFR
KUNU Dodge County Airport
38 NM NE
VFR
KLNR Tri-County Regional Airport
43 NM W
VFR
KFEP Albertus Airport
44 NM S
VFR
KUES Waukesha County Airport
46 NM E
VFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗99C on OurAirports
FREQUENTLY ASKED
Does 99C have a METAR?
No on-field METAR is issued for 99C. This page uses the nearest reporting station as a reference.
Does 99C have a TAF?
No TAF is issued directly for 99C. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 99C?
99C sits at 843 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 99C?
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.