Northeast us doppler radar1/23/2024 There’s more to it than that, but when it happens, snow is likely. Lake effect, most simply explained, is snow that results when a cold wind blows over a warm lake. They can pick up some moisture from unfrozen lakes, but these are disturbances, low pressure. Snow in winter comes from three primary sources: clippers, lake effect and nor’easters.Ĭlippers are moisture starved disturbances from Canada. The average temperature in January - the coldest month - is 21☏. Winter temperatures range from cool to very frigid, and generally, the closer to the Canadian border, the colder the temperatures. In dry periods these storms are often the best chance for rain. The humidity in the summer months is often high, and as cold fronts pass, the moisture in the air can produce thunderstorms. The average temperature in the Northeast for the month of July - the warmest month - is 69☏. Temperatures are warm and moderate in the summer, although the region can also experience some very hot and humid days. The Northeast US is moderately rainy and in the winter the region experiences significant snow, sleet and freezing rain. The annual precipitation average for the Northeast is 46 inches a year. Weather in the Northeast US is characterized by a battle between cool or cold dry air masses from the northwest and warm wet air masses from the southwest. To a large extent this conflict defines our weather through much of the year.
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