WxDecoder

US-6828 Weather Great Lakes Seaplane Base

Antioch, IllinoisElevation 737 ftSeaplane base
OFF-FIELD REFERENCE
Nearest report: KENW · 12 NM NE · 17 min old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KENW
WIND
Calm
no steady wind
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
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 240° at 3 kt, visibility 10 SM, temperature 12C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy then patchy fog, low near 49F, 2% 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 then Patchy Fog 49 NNW 9 kt – 2%
Monday Mostly Cloudy 61/47 NE 13 kt 22 kt 3%
Tuesday Mostly Cloudy 64/54 ESE 9 kt 17 kt 10%
Wednesday Mostly Sunny 70/56 SSW 9 kt – 19%
Thursday Chance Showers And Thunderstorms 74/52 SW 9 kt – 26% Thunderstorms in the forecast
Friday Chance Rain Showers 72/54 SE 4 kt – 35%
Saturday Chance Rain Showers 70/54 SSE 4 kt – 53%
Sunday Chance Rain Showers 68 SW 4 kt – 37%

Source: National Weather Service (office LOT). Forecast issued 0437Z.

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 US-6828. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 3,451 ft

03W/21W
Dimensions
3,451 x 400 ft
Surface
Water (fair)
RWY 03W
RWY 21W

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Field elevation

Field elevation
737 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
2255Z 5:55 PM
Sunrise
1218Z 7:18 AM
Loggable night
2324Z (6:24 PM local) → 1149Z (6:49 AM local)
end of evening to start of morning civil twilight
Position lights required
2255Z (5:55 PM local) → 1218Z (7:18 AM local)
sunset to sunrise (91.209)
Night passenger currency
2355Z (6:55 PM local) → 1118Z (6:18 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

Great Lakes Seaplane Base is in Antioch, Illinois. Field elevation 737 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSeaplane base
ManagerTRENT TOBIAS
Manager phone847-812-1480
CHARTS & AIRSPACE
ICAO / IATAUS-6828
SectionalCHICAGO
Center (ARTCC)CHICAGO
Flight service (AFSS)KANKAKEE
RegionIllinois
CountryUnited States
Coordinates42.4665, -88.1328
Distance from city2 NM WSW
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

US-6828 traffic patterns

2026-07-17 to 2026-10-19, 8 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: Mon · Busiest month: Oct

FLEET MIX
Unknown 57%Piston single 29%Helicopter 14%

Fleet composition unclear from available data.

TOP AIRCRAFT TYPES
›C150 (Piston single) · ~1 landings/mo
›PETR (Unknown) · ~1 landings/mo
›ZZZZ (Unknown) · ~1 landings/mo
›R44 (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

US-6828 has no on-field report. Nearest reporting station: KENW (12 NM NE, VFR).

KENW Kenosha Regional Airport
12 NM NE
VFR
KUGN Waukegan National Airport
12 NM E
VFR
KRAC John H Batten Airport
23 NM NE
LIFR
KMKE General Mitchell International Airport
31 NM N
IFR
KORD Chicago O'Hare International Airport
31 NM S
VFR
KDPA Dupage Airport
34 NM S
VFR
AIRPORT REMARKS

Operational remarks

›FLOAT172@GMAIL.COM
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗US-6828 on OurAirports
FREQUENTLY ASKED
Does US-6828 have a METAR?
No on-field METAR is issued for US-6828. This page uses the nearest reporting station as a reference.
Does US-6828 have a TAF?
No TAF is issued directly for US-6828. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at US-6828?
US-6828 sits at 737 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for US-6828?
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.