Heavy Rainfall in the East Wednesday; Hot Temperatures Continue in Coastal Southern California

Heavy to excessive rainfall may lead to flooding Wednesday over southwest Pennsylvania into northern West Virginia, and western Maryland. Flood Watches have been issued. An extended period of hot weather will continue for parts of coastal southern California including Los Angeles through Thursday. Heat Advisories remain in effect. Read More >

Automated Surface Observing Systems (ASOS)

Picture of an ASOS station

The ASOS program is a joint effort of the National Weather Service (NWS), the Federal Aviation Administration (FAA), and the Department of Defense (DoD). The ASOS systems serves as the nation’s primary surface weather observing network. ASOS is designed to support weather forecast activities and aviation operations and, at the same time, support the needs of the meteorological, hydrological,and climatological research communities. For complete details on the ASOS program, click here.

Our Electronic Systems Analyst and Electronic Technicians responsible for ASOS equipment maintenance.

To view current observations from the ASOS equipment (and buoys) in our County Warning Area, click here. This equipment provides information on the following basic weather elements:

Sky condition:cloud height and amount (clear, scattered, broken, overcast) up to 12,000 feet
Visibility (to at least 10 statute miles)
Basic present weather information: type and intensity for rain, snow, and freezing rain
Obstructions to vision: fog, haze
Pressure: sea-level pressure, altimeter setting
Ambient temperature, dew point temperature
Wind: direction, speed and character (gusts, squalls)
Precipitation accumulation

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Radar