A thin overcast has blocked enough of the early December sun to keep the mercury (or electronic sensor) struggling to reach even the mid 40s in the Washington DC metro area this afternoon. Scattered precipitation, mostly of the frozen kind, ahead of a weak low pressure trough moving eastward from the Ohio Valley reached Elkins, West Virginia and parts of the Maryland panhandle by 3:30. Morgantown and Parkersburg are also currently reporting light snow. It would not be out of the question to see a flurry or two in at least the far western portions of the region this evening.
Tonight and TomorrowTonight and tomorrow should see similar temperatures to today's: lows in the low 30s, highs near 43. Clearing skies tonight should yield a sunny day for tomorrow.
Tropical Beat Goes On, and On . . .Epsilon reached near hurricane strength last night at a maximum wind speed of 70 mph. It was becoming more organized and trying to develop an eye this morning, but max winds were down to 65 mph. It is now back up to 70 mph,
moving northeastward away from Bermuda. With a little δv (change in velocity), it could still become a hurricane briefly before weakening over cooler waters.
Shapely Pin-upsNo, we're not talking about the
Weather Girls here. The publications section (not online) of the November
Bulletin of the AMS has an announcement of the
Snowflakes calendar for 2006. This is a project of CalTech professor and chairman of the physics department
Kenneth G. Libbrecht. One of his research areas is the physics of crystal growth and pattern formation in ice, and he is the proprietor of
snowcrystals.com. Also new this year is
The Magic of Snowflakes, a collection of snowflake-photograph postcards. Prof. Libbrecht has previously written the books
The Snowflake: Winter's Secret Beauty and
The Little Book Of Snowflakes.