UPDATE: Southern Fremont County has been added to the watch area.

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Showers and thunderstorms will impact Natrona and Johnson Counties

from this afternoon through the day Monday.

Widespread half an inch...to one inch of rain is expected. Isolated areas could see

up to 2 inches of rain.

This rainfall will lead to rises on small creeks and streams...and could cause minor flooding of low lying or poor drainage areas.

Also...Casper Mountain could see some snow Monday...as snow levels dip down to around 7000 feet after sunrise Monday.