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Boston Weather: 61.0°F | Overcast

Weather: Rain for Spring Weekend

By Samantha Hess
STAFF METEOROLOGIST -- After days of clouds and rain, today will be a welcome break, as the Boston area will be treated to a sunny, relatively warm day with highs in the 60s. However, don't get used to it, as we will be cool and rainy throughout the weekend as well. Rain may be heavy throughout the day Saturday. Of course, just as the weekend is over, expect clearing skies and warmer temperatures.

An article published by researchers in the April edition of the American Meteorological Society's Journal of Atmospheric Sciences found evidence of a previously unheard of weather phenomenon: cirrus clouds formed by a hurricane included frozen plankton. Hurricane Nora was a powerful Pacific hurricane that made landfall in California in September 1997. The moisture from Nora spawned high cirrus clouds that spread as far as the plains states. Scientists collected samples from these clouds over Oklahoma, hoping to analyze what types of particles, such as desert dust or sulfate particles, acted as the nuclei for the formation of the ice crystals in the clouds. In addition to what they expected, they also found sea salt and even frozen plankton acting as crystal nuclei in the clouds, having been carried into the upper troposphere by the updrafts from Nora and then carried as far east as Oklahoma. Apparently, these plankton boldly went where no plankton had gone before.

Extended Forecast

Today: Sunny and warm. High 61°F (16°C).

Tonight: Showers possible. Low 43°F (6°C).

Saturday: Heavy rain and chilly. High 47°F (8°C).

Sunday: Rain possible, but warming up. Morning low 41°F (5°C), high 54°F (12°C).

Monday: Mostly cloudy but dry. Morning low 42°F (6°C), high 57°F (14°C).