The Tech - Online EditionMIT's oldest and largest
newspaper & the first
newspaper published
on the web
Boston Weather: 41.0°F | Partly Cloudy

Weather: High Pressure, Low Temperatures

By Michael J. Ring
STAFF METEOROLOGIST -- On most days, the most notable features on the weather map are low pressure systems and the precipitation associated with them. But with dry weather over most of the country, it is an extremely strong high pressure system which stands out today. Our weather on the Eastern Seaboard will be dominated by this feature for the next few days.

In the Northern Hemisphere, flow around a center of high pressure is clockwise. Hence, with the cell currently to our west, the wind today will be from the north. As can be expected, these northerly winds will bring colder temperatures than those we have enjoyed the past few days. This cold advection will be intense as the pressure gradients about this high are strong, and the wind strength in the atmosphere is proportional to the pressure gradient. In fact, tonight’s record low temperature of 26°F (-3°C) may be in jeopardy.

Once the high pressure center passes to our east, the winds will shift from northerly to southerly and warmer air will flow into the region. The cell should slide offshore on Wednesday afternoon, setting up Veteran’s Day to be the warmest day of the week.

Extended Forecast:

Today: Clear but unseasonably cold. High only near 40°F (4°C).

Tonight: Clear with near-record low temperatures of about 26°F (-3°C).

Tomorrow: Partly cloudy with continued below-normal temperatures. High near 44°F (6°C).

Tomorrow night: Partly cloudy and not as cold. Low near 35°F (2°C).

Thursday: Mostly cloudy and warmer. High near 58°F (14°C). Low near 45 F (8 C).

Friday: Cloudy with a chance of rain. High near 50°F (10°C).