11/21/2025
Last night and tonight, my low power signal into the repeater has been pretty good. I asked Google what weather changes have occurred in the last 48 hours to make the noise floor better on 50 MHz. The AI overview said - A
high-pressure system and associated clearer, drier air are the most likely weather conditions in the last 24 hours to have improved the 50 MHz radio noise floor in Williamsport, PA. Drier air and stable atmospheric conditions typically reduce man-made static and general background noise (QRN) in the VHF spectrum.
Weather Conditions in Williamsport, PA (last 24 hours)
The weather in Williamsport from Thursday, November 20, 2025, to Friday, November 21, 2025, was generally cool, mostly cloudy, and dry for much of the period.
Humidity and Precipitation: The air was relatively dry on Thursday (around 60-70% humidity) with no significant precipitation. Drier conditions typically lead to a lower noise floor compared to high humidity, rain, or snow, which can cause static or affect antenna performance.
Atmospheric Pressure: The barometric pressure was high and stable, around 30.20 inHg. High pressure often indicates stable, clear weather, which is favorable for reduced atmospheric noise.
Lack of Thunderstorms: There were no reports of thunderstorms in the area. Thunderstorms are a major source of static and high noise on radio bands.
Temperature and Wind: Temperatures ranged from a low of 28°F to a high of 47°F, with light and variable winds.
Effect on 50 MHz Noise Floor
The absence of significant weather events (like thunderstorms or heavy precipitation) and the presence of stable, drier atmospheric conditions are the likely reasons for a better 50 MHz noise floor. The low humidity would have minimized localized static, allowing for potentially clearer reception on the 6-meter band.
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