Sunday, January 20, 2019

colder, wetter, whiter... (pm.20.jan.19)>

Sunday's stats:

Low temp: 48.7ºF (9.3ºC)
High temp: 54.6ºF (12.6ºC)
Precipitation: trace

We only had a little bit of dim sunshine this morning, as clouds moved in and thickened up all throughout the day.  I first noticed a few sprinkles of very light rain around 2:15pm, with other random raindrops and brief periods of drizzle during the late afternoon and early evening.  With all the cloudiness, temperatures didn't move very much.

The winter storm system moving into Himalayan north India is one of the most robust we've seen in a long time, and has the strong potential to impact a very wide area with heavy precipitation (both rain and snow) over the course of the next four or five days.  The upper-level low pressure center is now located over extreme northeastern Iran, and will move into central Afghanistan by early Tuesday... then stall out in that vicinity for the rest of the week.  All the ingredients necessary for a major winter storm scenario are assembling... a good amount of moisture, plenty of lifting of that moisture due to a strong southwesterly flow aloft running straight up against the mountains, and an influx of the coldest air of this winter season thus far coming in from the north-northwest.

Models are very consistent in showing precipitation amounts in the range of 2.5 to 3.5" (6.5 to 9cm) between now and mid-day Wednesday -- which means areas uphill of the rain/snow line are likely to receive two to three feet of snow.  Those forecast amounts may actually end up on the conservative side.

Check THE 7-DAY OUTLOOK for forecast details for our immediate area here in McLeod Ganj...