Narrative:

Flight left as scheduled at xxxxz, at time of departure release did not require an alternate. At xxyyz national WX service amended the forecast to require an alternate for the destination, but my computer net didn't receive the amendment until xxxaz -- 1/2 hour after the amendment. The flight continued without an alternate and landed without incident. I contacted the crew prior to landing and they felt they could safely continue the flight.

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Original NASA ASRS Text

Title: AN ACR ACFT DEPARTED WITHOUT FILING A REQUIRED ALTERNATE ARPT DUE TO A LATE RECEIPT OF THE LATEST WX FORECAST BY THE COMPANY DISPATCHER.

Narrative: FLT LEFT AS SCHEDULED AT XXXXZ, AT TIME OF DEP RELEASE DID NOT REQUIRE AN ALTERNATE. AT XXYYZ NATIONAL WX SVC AMENDED THE FORECAST TO REQUIRE AN ALTERNATE FOR THE DEST, BUT MY COMPUTER NET DIDN'T RECEIVE THE AMENDMENT UNTIL XXXAZ -- 1/2 HR AFTER THE AMENDMENT. THE FLT CONTINUED WITHOUT AN ALTERNATE AND LANDED WITHOUT INCIDENT. I CONTACTED THE CREW PRIOR TO LNDG AND THEY FELT THEY COULD SAFELY CONTINUE THE FLT.

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.