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Hope for rain this week in wildfire-scarred Northern California is fading.

A trend of cooler and more moist conditions expanding from the coast into the interior had been expected to be followed by rain, but forecasts are changing Wednesday.

The National Weather Service now says widespread rainfall appears less likely.

The moisture is instead likely headed to Southern California but still only bringing a slight chance of showers.

More than 16,500 firefighters continue work to contain 22 major wildfires.

Among notable progress, the 105-square-mile Glass Fire in the wine country of Napa and Sonoma counties is 58% contained.