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Weather station's callsign: Clear
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APRS/CWOP weather report from K9JM - info
Comment: .weewx-5.1.0-Vantage
Location: 39°06.80' N 121°03.19' W - locator CM99LC37OE - show map
3.1 km South bearing 179° from Alta Sierra, Nevada County, California, United States [?]
11.8 km South bearing 177° from Grass Valley, Nevada County, California, United States
70.4 km Northeast bearing 33° from Sacramento, Sacramento County, California, United States
116.1 km Southwest bearing 247° from Reno, Washoe County, Nevada, United States
Last WX report: 2026-02-01 22:30:36 UTC (13m27s ago)
2026-02-01 14:30:36 PST local time at Alta Sierra, United States [?]
Temperature: 17.8 °C
Dew point: 7.0 °C
Humidity: 49 %
Pressure: 1020.6 mbar
Wind: West 270° 0.9 m/s (Gusts 2.2 m/s)
Rain: 0.0 mm during last 1 hour, 0.0 mm during last 24 hours, 0.0 mm since midnight
This page shows weather data collected mostly by privately owned and operated weather stations. Stations with a CW-prefixed, numbered callsign are taking part in the Citizen Weather Observer Program (CWOP). Most other weather stations are amateur radio operators with a weather station. Some information is also converted by individuals from publicly available sources like airport weather reports.
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