WA WFO SPOKANE Warnings, Watches, and Advisories

WFO SPOKANE Warnings, Watches and Advisories for Sunday, April 30, 2023

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SPECIAL WEATHER STATEMENT

Special Weather Statement

National Weather Service Spokane WA

1236 PM PDT Sat Apr 29 2023

...RISING RIVERS AND COLD WATER THIS WEEKEND INTO NEXT WEEK...

This weekend through the middle of next week will be very warm

with air temperatures typical of early summer than late April or

early May. The warm temperatures will melt snow in the mountains

with rivers on the rise through this weekend and next week. Even

though air temperatures will be warm, water temperatures will

remain very cold. Cold water temperatures and strong currents will

pose a significant risk of cold water shock, hypothermia, and

drowning.

Warm temperatures will continue through much of next week with an

extended period of rises on rivers and small streams into the

weekend. Rainfall from showers and thunderstorms Monday through

Thursday will exacerbate the higher flows with many of our rivers

nearing or exceeding bankfull. The following rivers are currently

forecasted to rise above bankfull: Moyie River, Coeur d'Alene

River, St. Joe River, Kettle River, Okanogan River, Stehekin

River. The St. Joe River and the Kettle River currently have the

highest chances (40 to 60%) to experience flooding next weekend.

There is a 20% chance of thunderstorms over the region each day

Monday through Thursday. There is uncertainty with how widespread

thunderstorms will be each day, but any thunderstorms that

develop will be slow moving with the potential of producing heavy

downpours and isolated large hail. Heavy rain could lead to flash

flooding or debris flows...