Narrative:

I was the dispatcher on a flight planned with no alternate and none was required. At or very near departure time the destination forecast WX was changed to require an alternate. I had more than 1 flight to amend and was not able to get this flight to amend flight plan before departure. The visibility was near 3 mi and ceiling just under 2000 ft, so I was not worried about it being an unsafe flight, just legality (far) issues. I believe the destination WX at destination became VFR and was VFR when he landed.

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Original NASA ASRS Text

Title: DISPATCHER FOR MAJOR ACR IS UNABLE TO UPDATE RELEASE FOR B737-300 FLT WHOSE DEST FORECAST HAS DETERIORATED AND REQUIRES AN ALTERNATE NOT SPECIFIED IN THE ORIGINAL DISPATCH RELEASE.

Narrative: I WAS THE DISPATCHER ON A FLT PLANNED WITH NO ALTERNATE AND NONE WAS REQUIRED. AT OR VERY NEAR DEP TIME THE DEST FORECAST WX WAS CHANGED TO REQUIRE AN ALTERNATE. I HAD MORE THAN 1 FLT TO AMEND AND WAS NOT ABLE TO GET THIS FLT TO AMEND FLT PLAN BEFORE DEP. THE VISIBILITY WAS NEAR 3 MI AND CEILING JUST UNDER 2000 FT, SO I WAS NOT WORRIED ABOUT IT BEING AN UNSAFE FLT, JUST LEGALITY (FAR) ISSUES. I BELIEVE THE DEST WX AT DEST BECAME VFR AND WAS VFR WHEN HE LANDED.

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.