  Post equinox imaging of Uranus by HST, Keck, and Gemini telescopes has
enabled new measurements of winds over previously sampled latitudes as well as
measurements at high northern latitudes that have recently come into better
view. These new observations also used techniques to greatly improve signal to
noise ratios, making possible the detection and tracking of more subtle cloud
features. The 250 m/s prograde jet peaking near 60 N was confirmed and more
accurately characterized. Several long-lived cloud features have also been
tracked. The winds pole-ward of 60 N are consistent with solid body rotation at
a westward (prograde) rate of 4.3 deg/h with respect to Uranus' interior. When
combined with 2007 and other recent measurements, it is clear that a small but
well-resolved asymmetry exists in the zonal profile at middle latitudes,
peaking at 35 deg, where southern winds are 20 m/s more westward than
corresponding northern winds. High S/N Keck II imaging of the north polar
region of Uranus reveals a transition from streaky bands below 60 N to a region
from 60 deg to nearly the north pole, where widely distributed small bright
spots, resembling cumulus cloud fields, with several isolated dark spots, are
the dominant style of cloud features. This presents a stark contrast to 2003
detailed views of the south polar region of Uranus when no discrete cloud
features could be detected in comparable Keck II near-IR images. The pressure
levels of discrete clouds estimated from spatial modulations in H and Hcont
images indicate that the polar cloud features are generally in the 1.3 to 2-3
bar range, as are equatorial and several mid-latitude features. Several of the
brighter mid latitude features are found above the 1.2-bar level of methane
condensation.
