Narrative:

I received a weather alert when a new forecast was issued stating the destination was unsuitable. I checked the weather and confirmed it was not unsuitable with the ILS to runway 21. Minimums needed 200 and 1/2. Forecast weather was 'ZZZ ft 1100/1124 31006 kt 3 sm br ovc 004 tempo 1100/1104 1 sm br ovc 002 fm 110400 31005 kt 1 sm br ovc 002'. When the flight was about 45 minutes out I looked at the current weather again and noticed there had been an amended forecast issued at XA32Z. I did not receive an alert this time and did not recheck the forecast since the xaz forecast had just been issued. The amended forecast was 'ZZZ ft 1100/1124 31004 kt ¼ sm fg ovc 001 tempo 1101/1105 1 sm br ovc 002 fm 110500 31005 kt 1 sm br ovc 002'. When the flight arrived the tower advised the runway edge lights for runway 3/21 were out of service. The flight had to shoot the VOR runway 33 to minimums of 600 and 1-1/2. The current weather was 200 and 2. The flight made an approach but went missed and diverted to the filed alternate.

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Original NASA ASRS Text

Title: The Dispatcher and the Captain of a flight to an airport at sub minimum weather discuss the breakdown in communication regarding forecast amendments subsequent to the flight's departure.

Narrative: I received a weather alert when a new forecast was issued stating the destination was unsuitable. I checked the weather and confirmed it was not unsuitable with the ILS to Runway 21. Minimums needed 200 and 1/2. Forecast weather was 'ZZZ FT 1100/1124 31006 kt 3 sm br ovc 004 tempo 1100/1104 1 sm br ovc 002 fm 110400 31005 kt 1 sm br ovc 002'. When the flight was about 45 minutes out I looked at the current weather again and noticed there had been an amended forecast issued at XA32Z. I did not receive an alert this time and did not recheck the forecast since the XAZ forecast had just been issued. The amended forecast was 'ZZZ FT 1100/1124 31004 kt ¼ sm FG ovc 001 tempo 1101/1105 1 sm br ovc 002 fm 110500 31005 kt 1 sm br ovc 002'. When the flight arrived the tower advised the runway edge lights for Runway 3/21 were out of service. The flight had to shoot the VOR Runway 33 to minimums of 600 and 1-1/2. The current weather was 200 and 2. The flight made an approach but went missed and diverted to the filed alternate.

Data retrieved from NASA's ASRS site as of April 2012 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.