101.   Despite a large high pressure system in the central Rockies, clouds will persist over the northern mountains.

102.   Despite ample sunshine, temperatures will average well below normal owing to the domination of a Canadian high pressure system.

103.   Downpours came as a low pressure system stalled over interior Alaska, its progress blocked by unyielding high pressure over the Arctic Ocean.

104.   Dry and warm conditions will cover the Middle Atlantic and Northeastern states Sunday as a large high pressure system moves over New England.

105.   Elsewhere, an upper level low pressure system will serve to draw moisture north into eastern Arizona and western New Mexico, causing clouds and isolated thunderstorms.

106.   During the cold season, many low pressure systems are born along the Asian coast, where natural temperature contrasts between continent and ocean provide energy for developing systems.

107.   Early this morning, more snow could fall at Portland as an intensifying low pressure system over the Gulf of Maine circulates cold, moist ocean air westward.

108.   Farther north, moisture wrapping around a slow-moving low pressure system will circulate clouds and spotty showers into extreme northern New England.

109.   Farther east, a compact low pressure system will produce snow and rain across the Great Lakes region, with snow more likely across northern areas.

110.   Friday morning, record chill affected portions of the Great Lakes and Ohio Valley as a large high pressure system from eastern Canada settled over the region.