Tropical Storm Lee (2011): Difference between revisions

Situated within an area of weak [[Tropical cyclone#Steering winds|steering currents]], the depression remained nearly stationary during the initial stages of its existence.<ref>{{cite web|url=http://www.nhc.noaa.gov/archive/2011/al13/al132011.discus.002.shtml?|title=Tropical Depression Thirteen Discussion Number Two|date=2011-09-02|accessdate=2011-09-02|publisher=[[National Hurricane Center]]|first1=Dan|last1=Brown}}</ref> It exhibited a poor organization at the time; the circulation remained elongated, with a broad center of light winds removed from the sheared convective mass.<ref name=discuss1 /><ref>{{cite web|url=http://www.nhc.noaa.gov/archive/2011/al13/al132011.discus.002.shtml?|title=Tropical Depression Thirteen Discussion Number Three|date=2011-09-02|accessdate=2011-09-02|publisher=[[National Hurricane Center]]|first1=Jack|last1=Beven}}</ref> Over the course of September 2 the convection began to deepen over its eastern portion,<ref>{{cite web|url=http://www.nhc.noaa.gov/archive/2011/al13/al132011.discus.004.shtml?|title=Tropical Depression Thirteen Discussion Number Four|date=2011-09-02|accessdate=2011-09-02|publisher=[[National Hurricane Center]]|first1=Stacy|last1=Stewart}}</ref> which later translated into an increase in the winds. Based on this, the depression was upgraded to Tropical Storm Lee at 1800 UTC.<ref>{{cite web|url=http://www.nhc.noaa.gov/archive/2011/al13/al132011.public_a.004.shtml?|title=Tropical Storm Lee Advisory Number 4 A|date=2011-09-02|accessdate=2011-09-02|publisher=[[National Hurricane Center]]|first1=Stacy|last1=Stewart}}</ref> Lee meandered erratically north-northwestward to northward for the rest of the day, and with a small [[Tropical upper tropospheric trough|upper low]] advecting dry air into the circulation any deep convection over its western semicircle remained scarce during that time.<ref>{{cite web|url=http://www.nhc.noaa.gov/archive/2011/al13/al132011.discus.005.shtml?|title=Tropical Storm Lee Discussion Number Five|first=Stacy|last=Stewart|date=2011-09-02|accessdate=2011-09-03|publisher=[[National Hurricane Center]]}}</ref><ref>{{cite web|url=http://www.nhc.noaa.gov/archive/2011/al13/al132011.discus.006.shtml?|title=Tropical Storm Lee Discussion Number Six|first=Dan|last=Brown|date=2011-09-02|accessdate=2011-09-03|publisher=[[National Hurricane Center]]}}</ref> By September 3, the storm sustained a large radius of [[maximum sustained wind|maximum winds]] within the still elongated circulation; this unusual structure to purely tropical cyclones, combined with an overall hybrid appearance on [[Weather satellite|satellite images]], suggested Lee supported [[Subtropical cyclone|subtropical characteristics]].<ref>{{cite web|url=http://www.nhc.noaa.gov/archive/2011/al13/al132011.discus.007.shtml?|title=Tropical Storm Lee Discussion Number Seven|first=Jack|last=Beven|date=2011-09-03|accessdate=2011-09-03|publisher=[[National Hurricane Center]]}}</ref>