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Reporter ATCT local controller advises that special WX should be updated sooner on the ASOS. With lightning approximately 1 mi from the airport, the ASOS wasn't updated until advised by the tower.
| Attributes | |
| ACN | 342410 |
| Time | |
| Date | 199607 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : csy |
| State Reference | WY |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| ASRS Report | 342410 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | other |
Narrative:
Thunderstorm overhead the cheyenne airport. No special WX was taken, and national WX service did not augment thunderstorm into the ASOS until approximately 45 mins later and only after the tower advised of the situation. Lightning was observed cloud to ground approximately 1 mi north of the airport. Recommendation: NWS should pay more attention to existing WX conditions because ASOS cannot be trusted to observe the correct conditions during thunderstorm activity.
Original NASA ASRS Text
Title: RPTR ATCT LCL CTLR ADVISES THAT SPECIAL WX SHOULD BE UPDATED SOONER ON THE ASOS. WITH LIGHTNING APPROX 1 MI FROM THE ARPT, THE ASOS WASN'T UPDATED UNTIL ADVISED BY THE TWR.
Narrative: TSTM OVERHEAD THE CHEYENNE ARPT. NO SPECIAL WX WAS TAKEN, AND NATIONAL WX SVC DID NOT AUGMENT TSTM INTO THE ASOS UNTIL APPROX 45 MINS LATER AND ONLY AFTER THE TWR ADVISED OF THE SIT. LIGHTNING WAS OBSERVED CLOUD TO GND APPROX 1 MI N OF THE ARPT. RECOMMENDATION: NWS SHOULD PAY MORE ATTN TO EXISTING WX CONDITIONS BECAUSE ASOS CANNOT BE TRUSTED TO OBSERVE THE CORRECT CONDITIONS DURING TSTM ACTIVITY.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.