Narrative:

WX at orlando had deteriorated rapidly with thunderstorms and squall lines moving across the airport. Lndgs were being made to the north with fairly uneventful arrs from the south and east. The tower was reporting windshear alerts with gains of 20- 25 KTS in airspeed. A B757 was ahead of our flight and reported a gain of 35 KTS on final approach. The crew recommended that no further aircraft attempt a landing due to the windshear. At the same time we noticed a squall line with heavy rain moving across the northern end of the airport. The decision was made to discontinue the approach and go around. Considering our fuel state (1000 pounds above 'minimum' fuel) and the fact that tower was now reporting level 4 and 6 thunderstorms approaching the field, we decided to divert to melbourne. We landed at mlb some 20 mins later, refueled, and returned to orlando after the WX passed.

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Original NASA ASRS Text

Title: B737-200 ENCOUNTERED RAPIDLY DETERIORATING CONDITIONS ON APCH MCO. B757 AHEAD RPTED WINDSHEAR AND SUGGESTED APCHS BE DISCONTINUED. CAPT ELECTED TO MAKE A GAR AND PROCEED TO ALTERNATE TO AWAIT WX IMPROVEMENT MCO. SEE ACN 365370 FOR SIMILAR RPT CONDITIONS MCO.

Narrative: WX AT ORLANDO HAD DETERIORATED RAPIDLY WITH TSTMS AND SQUALL LINES MOVING ACROSS THE ARPT. LNDGS WERE BEING MADE TO THE N WITH FAIRLY UNEVENTFUL ARRS FROM THE S AND E. THE TWR WAS RPTING WINDSHEAR ALERTS WITH GAINS OF 20- 25 KTS IN AIRSPD. A B757 WAS AHEAD OF OUR FLT AND RPTED A GAIN OF 35 KTS ON FINAL APCH. THE CREW RECOMMENDED THAT NO FURTHER ACFT ATTEMPT A LNDG DUE TO THE WINDSHEAR. AT THE SAME TIME WE NOTICED A SQUALL LINE WITH HVY RAIN MOVING ACROSS THE NORTHERN END OF THE ARPT. THE DECISION WAS MADE TO DISCONTINUE THE APCH AND GAR. CONSIDERING OUR FUEL STATE (1000 LBS ABOVE 'MINIMUM' FUEL) AND THE FACT THAT TWR WAS NOW RPTING LEVEL 4 AND 6 TSTMS APCHING THE FIELD, WE DECIDED TO DIVERT TO MELBOURNE. WE LANDED AT MLB SOME 20 MINS LATER, REFUELED, AND RETURNED TO ORLANDO AFTER THE WX PASSED.

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.