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Another spring storm developed over the Northern Rockies and Northern Plans with wintry precipitation on Sunday as a trough of low pressure moved eastward through the region.

While this system carried less moisture than previous late season winter storms, plenty of cold air will accompany the system across the Upper Midwest. This cooler airmass allowed snow showers to blanket the higher elevations from the Pacific Northwest to the Northern Rockies and a mixture of precipitation to fall across the Upper Midwest.

The heaviest amounts of precipitation were expected to remain over the Northern Rockies, while lighter and more scattered showers moved into the Upper Midwest. Snowfall totals over the Northern Rockies were expected to range from 2 to 6 inches, with 5 to 10 inches likely at higher elevations through Sunday evening.

The Upper Midwest experienced snow showers, mixed with rain in the warmer hours of the middle of the day and afternoon and snow accumulations of 1 to 2 inches. Meanwhile, an associated cold front trailed behind this system and moved into the Central Plains with chances of showers and thunderstorms.

In the East, a ridge of high pressure maintained dry but cool conditions across the Eastern Valleys and East Coast. To the south, the tail end of a frontal boundary lingered over the Florida peninsula and allowed for more scattered showers and thunderstorms to continue throughout the day.

SUNDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................89 Palm Springs, Calif.

HIGHEST HEAT INDEX (DEGREES F)..........................91 Naples, Fla.

LOWEST TEMPERATURE (DEGREES F)..........................5 Mt. Washington, N.H.

LOWEST WIND CHILL (DEGREES F)...........................-27 Mt. Washington, N.H.

HIGHEST WIND GUST (MPH).................................78 Mt. Washington, N.H.

HIGHEST PRECIPITATION (INCHES)..........................0.49 Key West, Fla.

ON THIS DATE....... A major F4 tornado struck at dismissal time at a Belvidere, Ill., school on this date in 1967. The tornado ripped right through the school's bus loading zone, where students were being loaded onto buses. Twelve buses were overturned and 13 students were killed and plywood from nearby houses were used as stretchers for the 300 injured.

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