 |
| 1830 hrs IST clouds formation over west coast Courtesy : IMD |
 |
| Gradient Wind Courtesy :BOM Australia |
The
Arabian Sea branch of SWM strength fizzled away as of now and confined to Omen,
Yemen, and Somalia and adjoining Arabian Sea.
However the Bay branch is relatively better because of the strength of
HIGH in south Indian Ocean at 95 Deg East. The clouding in the Bay near Malacca
straight fed by weak SWly winds may lead to formation of low pressure area.
The Gradient Level Wind Analysis is a snapshot of the airflow near the
surface of the earth. The arrowed lines are called streamlines and represent the direction of the
wind. The dashed lines are called isotachs, and connect points of equal wind
speed. Geostropic
winds exist in locations where there are no frictional forces
and the isobars are straight. However, such locations are quite rare. Isobars
are almost always curved and are very rarely evenly spaced. This
changes the geostrophic winds so that they are no longer geostropic but are
instead in gradient wind
balance. They still blow parallel to the isobars, but are no longer
balanced by only the pressure gradient and Coriolis forces, and do not have the
same velocity as geostrophic winds.
[Courtesy : University of Illonois WM 2010 weather web]
 |
| 051014 12Z lower level winds Courtesy: CIMSS |
 |
| 051014 1600LT Courtesy : Mauritius weather Service |
Usually during SWM withdrawal TS activity will be more over EAST coast . This time it is pronounced over west.
No comments:
Post a Comment