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Automated Surface/Weather Observing Systems (ASOS/AWOS)

 

Automated weather reporting systems are increasingly being installed at airports.These systems consists of various sensors, a processor, a computer-generated voice subsystem, and in some cases a transmitter to broadcast local, minute-by-minute weather.By providing current weather information, these systems are designed to improve the safety and efficiency of aviation operations as well as being the key to improving forecasts and warnings.

 

There are inherit limitations with automated sensors especially during rapidly changing weather conditions when some delay in reporting cloud ceilings and visibilities may occur.

 

Weather observations at HAAF are fully automated via an ASOS.METAR and SPECI observations for significant changes or occurrences are automatically and continuously disseminated into the military and national weather networks.No radio/transmitter capability is currently available.

 

To ensure flight safety weather technicians and ATC tower personnel must work together to maintain situational awareness of current weather conditions and the ASOS observation.Under certain conditions, weather technicians are required to augment the HLR ASOS.The two augmentation processes used are supplementing and back-up.Supplementing is a method of manually adding meteorological information to an automated observation that is beyond the capabilities of the ASOS to detect and/or report.Back-up is the method of manually providing meteorological data and/or dissemination to the ASOS when the primary automated method is not operational or unavailable due to sensor and/pr communication failure.

 

Weather technicians will back-up the HLR ASOS from the HAAF tower if it becomes fully inoperative or the wind sensor becomes inoperative due to sensor and/or communication failure during normal Hood Airfield operating hours.

 

Weather technicians will back-up the HLR ASOS from the HAAF tower if the ceiling or visibility sensors become inoperative during normal Hood Airfield operating hours and weather conditions are/or forecast within 2 hours to be IFR (ceiling < 1000 feet and/or visibility < 3 statute miles [SM]) or in the weather technicianís judgment the data is unrepresentative of current conditions.

 

The automated weather observing systems listed below are located in the Western Training Area and are provided for aircrew situational awareness.Current weather conditions at these locations can be obtained by tuning into the frequency or by dialing into the system by phone.For a complete list of automated systems in Texas click here.

 

To learn how to decode a METAR weather observation click here.

 

 

IMPORTANT:THE SYSTEMS LISTED BELOW ARE NOT OWNED OR MAINTAINED BY THE 3D WEATHER SQUADRON.TO REQUEST REPAIRS OR REPORT OUTAGES, CONTACT THE APPLICABLE AIRFIELD MANAGER.

 

Frequency

Phone Number

Brady (KBBD)

118.375

Toll Free: 1-800-510-1996

Commercial: 325-597-9139

Brownwood Municipal (KBWD)

118.375

Toll Free: 1-888-297-9399
Commercial: 325-643-3933

Burnet Municipal Craddock Field (KBMQ)

119.925

Commercial: 512-756-7277

Gatesville City-County Airport (KGOP)

119.725

Commercial: 254-865-6742

Lampasas Municipal (KLZZ)

119.075

Commercial: 512-556-6392

San Angelo (KSJT)

ATIS-128.45

Commercial: 325-949-6686

San Saba Municipal (K81R)

N/A

Toll Free: 1-800-379-6349
Commercial: 325-372-6027

 

 

This page last updated on October 17, 2013