ZMA controller experienced a loss of separation event when traffic and weather introduced complicati...

Narrative:

There was a line of moderate to extreme precipitation that stretched across the northern part of the sector. Aircraft were deviating along with the departures that were coming off of mco that were also deviating. During this time I was giving OJT to my trainee and it got to the point where I had to eventually take over. Palm beach approach kept putting us in and out of hold because their final was saturated and they were also very busy. When they did open back up they wanted 20 miles in trail. This caused me to put a gulfstream; a pbi lander on a 270 degree heading and giving him a descent to 15;000 ft. A short time later I had a B737 come off of mco he was heading east for weather. His destination was towards the southeast. Right around this time is when I had to take over for my trainee. As soon as I saw these two aircraft on a converging course I didn't have time to use altitude because I needed 2;000 ft separation because the altimeters were below 29.92. I turned the B737 to a heading of 180. And I put the gulfstream on a heading of 360. By then the conflict alert went off. I think there should have been better pre-planning between management and tmu. I think if we would have had better in-trail or more spacing I think this could have been prevented; taking into consideration the line of weather that was stretching across the state.

Original NASA ASRS Text

Title: ZMA Controller experienced a loss of separation event when traffic and weather introduced complications difficult to overcome; the reporter listing the lack of pre-planning between management and the TMU as a causal factor.

Narrative: There was a line of moderate to extreme precipitation that stretched across the northern part of the sector. Aircraft were deviating along with the departures that were coming off of MCO that were also deviating. During this time I was giving OJT to my Trainee and it got to the point where I had to eventually take over. Palm Beach Approach kept putting us in and out of hold because their final was saturated and they were also very busy. When they did open back up they wanted 20 miles in trail. This caused me to put a Gulfstream; a PBI lander on a 270 degree heading and giving him a descent to 15;000 FT. A short time later I had a B737 come off of MCO he was heading east for weather. His destination was towards the southeast. Right around this time is when I had to take over for my trainee. As soon as I saw these two aircraft on a converging course I didn't have time to use altitude because I needed 2;000 FT separation because the altimeters were below 29.92. I turned the B737 to a heading of 180. And I put the Gulfstream on a heading of 360. By then the conflict alert went off. I think there should have been better pre-planning between management and TMU. I think if we would have had better in-trail or more spacing I think this could have been prevented; taking into consideration the line of weather that was stretching across the state.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1057179
Time
Date	201212
Local Time Of Day	1801-2400
Place
Locale Reference	ZMA.ARTCC
State Reference	FL
Aircraft 1
Make Model Name	B737-500
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Gulfstream IV / G350 / G450
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Vectors
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

ZMA controller experienced a loss of separation event when traffic and weather introduced complications difficult to overcome; the reporter listing the lack of pre-planning between management and the tmu as a causal factor.