Wednesday, September 23, 2015

autumn mingles with monsoon... (pm.23.sep.15)>

Wednesday's stats:

Low temp: 59.2F (15.1C)
High temp: 64.7F (18.2C)
Rainfall since midnight: 1.20" (3.0cm)
Rainfall since Tues morning: 4.40" (11.2cm)

We are shrouded in thick fog at last look -- though there has been extreme variability between sun, clouds and fog during the last couple of hours.  Our rainfall today hasn't been as heavy as it was yesterday into the overnight hours, but there were still some impressive downpours during the early afternoon that pushed our storm total well above 4 inches (more than 11cm) since about 6:30am on Tuesday.  It was fantastic to see the sun trying to break out during the mid- to late afternoon after many continuous hours of dreary and wet weather.

The storm system which has been plaguing us for the last couple of days is on its way out, with all of the dynamic/thermodynamic ingredients expected to continue dissipating and dispersing during the coming 24 hours.  There's still a weak upper-level circulation located over northern Pakistan this evening, and it will flatten out as it scoots across north India tonight into Thursday morning.  There's still a risk of a random shower overnight, but the trend should be toward clearing conditions.

A strengthening westerly flow in the mid- and upper-levels of the atmosphere will be the dominant weather feature during the end of this week -- and even into the early part of next week.  Computer model data is showing a steadily drying air mass over the course of the next several days, but we're going to have to watch out for cloud development and the risk of some random PM thundershowers until maybe Monday or Tuesday.  It's always a day-by-day thing to see if we can stabilize enough to get rid of our mountain slope convective issues.

By the way, the autumnal equinox occured at 1:52pm today -- that means we are now officially into the fall season.  Check out THE 7-DAY OUTLOOK, THE TRANSITION TO AUTUMN, and other tabs above for detailed monsoon rainfall information.