Narrative:

Dispatched to msy with no alternate or alternate fuel; WX forecast for msy did not require an alternate and did not mention rain or thunder showers in the vicinity. During descent we were advised and observed we would have to deviate around cells in the msy area; but aircraft were getting into msy ok. Upon check-in with msy approach; they changed our runway from 11 to 20; and advised us there were rain showers west and east of msy.first officer and I were busy changing runways; briefing approach; etc; but discussed that if we couldn't get into msy; our closest divert airport was baton rouge; 60 NM northwest. I noted our planned arrival fuel was approximately 6.0; and decided we would only go to baton rouge if absolutely necessary. While being vectored; we heard a company aircraft discontinue his approach (no reason given); and request to be sequenced. We queried approach about the weather and they replied it was the same with winds steady southwest at 20 knots. Then; one or two aircraft landed in front of us. Rest of vectors and approach were normal; with approach and tower confirming winds were steady southwest at 15 to 20 knots. We saw the runway; between two rain showers outside the FAF. On final; at approximately 1NM/300' we got a 'monitor radar display' windshear caution. I made a quick decision and verbalized that due to our fuel state; and lack of any other windshear indications from tower; other landing aircraft; or airspeed fluctuations; I was going to continue and land; which we did; uneventfully.I did decide that if we got any other indications of windshear; we would go around. We arrived at the gate with 6200 pounds of fuel. I'm submitting this report for a 'lessons learned' discussion to see if given this scenario; if company would have preferred us to land or execute an unplanned; uncoordinated; and fairly low fuel divert.although this all happened late in the flight; I could have been more proactive about actually planning for a divert to btr; i.e.; time; fuel; WX; etc.; even without coordinating with dispatch. This would have better prepared us for; and made us more accepting of a divert; if required.

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Original NASA ASRS Text

Title: B737 flight crew reported being dispatched to MSY with no alternate and none required; then having to deviate around thunderstorms during arrival. During approach in VMC the windshear caution annunciated at 300 feet and the Captain elected to continue to land. No windshear was encountered.

Narrative: Dispatched to MSY with no alternate or alternate fuel; WX forecast for MSY did not require an alternate and did not mention rain or thunder showers in the vicinity. During descent we were advised and observed we would have to deviate around cells in the MSY area; but aircraft were getting into MSY ok. Upon check-in with MSY Approach; they changed our runway from 11 to 20; and advised us there were rain showers west and east of MSY.FO and I were busy changing runways; briefing approach; etc; but discussed that if we couldn't get into MSY; our closest divert airport was Baton Rouge; 60 NM northwest. I noted our planned arrival fuel was approximately 6.0; and decided we would only go to Baton Rouge if absolutely necessary. While being vectored; we heard a Company aircraft discontinue his approach (no reason given); and request to be sequenced. We queried Approach about the weather and they replied it was the same with winds steady southwest at 20 knots. Then; one or two aircraft landed in front of us. Rest of vectors and approach were normal; with Approach and Tower confirming winds were steady southwest at 15 to 20 knots. We saw the runway; between two rain showers outside the FAF. On final; at approximately 1NM/300' we got a 'Monitor Radar Display' windshear caution. I made a quick decision and verbalized that due to our fuel state; and lack of any other windshear indications from Tower; other landing aircraft; or airspeed fluctuations; I was going to continue and land; which we did; uneventfully.I did decide that if we got any other indications of windshear; we would go around. We arrived at the gate with 6200 pounds of fuel. I'm submitting this report for a 'lessons learned' discussion to see if given this scenario; if Company would have preferred us to land or execute an unplanned; uncoordinated; and fairly low fuel divert.Although this all happened late in the flight; I could have been more proactive about actually planning for a divert to BTR; i.e.; time; fuel; WX; etc.; even without coordinating with Dispatch. This would have better prepared us for; and made us more accepting of a divert; if required.

Data retrieved from NASA's ASRS site 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.