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Strong thunderstorms moved through the center of the nation on Friday, as a low pressure system and associated cold front continued trekking eastward across the Plains.

The low pressure system moved from the Northern Plains into the Great Lakes, and created a cold front that stretched from the Upper Midwest through the Mid-Mississippi River Valley, into the southern Plains. Abundant moisture from the Gulf of Mexico fed energy into this system, which allowed for strong thunderstorms to develop from northern Texas through the Upper Peninsula of Michigan.

There was a slight chance of severe thunderstorm development in these areas, but severe storms have not yet developed. However, areas of heavy rainfall caused flooding across eastern Oklahoma through Arkansas. Heaviest precipitation was reported in Fort Sill, Okla., with a midday total of 5.58 inches of rain.

Meanwhile in the far Northeast, a low pressure system off the coast of New England continued moving northward into far eastern Canada. Flow around this system picked up moisture from the Atlantic Ocean and brought heavy rainfall to Maine, Nova Scotia, and New Brunswick.

In the West, monsoonal moisture over the Southwest will maintain shower and thunderstorm activity from New Mexico through Arizona and Southern California. Flood warnings have been issued for most of the Southwest. To the north, high pressure over the Northwestern states created a dry and warm day on Friday. This increased fire danger over the Pacific Northwest, Intermountain West, and Northern Rockies.

FRIDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................100 China Lake, Calif.

HIGHEST HEAT INDEX (DEGREES F)..........................106 Tampa Macdill AFB, Fla.

LOWEST TEMPERATURE (DEGREES F)..........................35 Saranac Lake, N.Y.

LOWEST WIND CHILL (DEGREES F)...........................27 Barrow, Alaska

HIGHEST WIND GUST (MPH).................................78 Vicksburg, Miss.

HIGHEST PRECIPITATION (INCHES)..........................5.58 Fort Sill, Okla.

ON THIS DATE....... Amazingly, Pueblo, Colo., set both its record low and high temperatures on this date in 1993. The morning low was 52 degrees, but the temperature quickly rose to a high of 101 degrees in the afternoon.

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