Narrative:

Departed tmb VFR on a 270 degree course. When about half a mile west on the field; tower notified me of serious weather conditions two miles west of the field. I was offered the option of a left 270 degree turn; altitude of 1;500 feet MSL which I accepted. This placed me on a 360 degree heading. When about two to three miles north of tmb; on a 360 degree heading; tower gave me a miami frequency for 'traffic advisories' and frequency change was approved.I continued on a 360 degree heading which enabled me to avoid storm cells which were immediately to my left and right. Shortly after this radio communication; I found myself within the west approach corridor of mia. I did not request clearance from miami approach for the following reasons: the tower (which on the miami sectional appears to be in bravo airspace) had given me a vector and altitude; had not suggested that any further clearance was required. Adverse weather conditions surrounding me were severe and the only safe course was to continue north.

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Original NASA ASRS Text

Title: Pilot reports of being issued a heading and altitude by Tower Controller to avoid weather. Controller gave pilot a frequency to change to for 'Traffic Advisories.' Pilot did not call the new frequency because he thought he did not need to since the tower had issued a heading and altitude for weather avoidance.

Narrative: Departed TMB VFR on a 270 degree course. When about half a mile west on the field; tower notified me of serious weather conditions two miles west of the field. I was offered the option of a left 270 degree turn; altitude of 1;500 feet MSL which I accepted. This placed me on a 360 degree heading. When about two to three miles north of TMB; on a 360 degree heading; tower gave me a Miami frequency for 'traffic advisories' and frequency change was approved.I continued on a 360 degree heading which enabled me to avoid storm cells which were immediately to my left and right. Shortly after this radio communication; I found myself within the west approach corridor of MIA. I did not request clearance from Miami Approach for the following reasons: the tower (which on the Miami sectional appears to be in bravo airspace) had given me a vector and altitude; had not suggested that any further clearance was required. Adverse weather conditions surrounding me were severe and the only safe course was to continue north.

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.