Significant Coastal Impacts to the Eastern Seaboard; Hurricane Nolo to Impact Hawaii

A Nor'easter will bring significant coastal impacts to the Mid-Atlantic and New England into Monday. Moderate to major coastal flooding, heavy rain, strong winds and high surf expected. Hurricane Nolo is expected to remain south of the Big Island of Hawaii. However, strong winds, damaging waves, and heavy rainfall may bring significant, life-threatening flooding and mudslides through the weekend. Read More >

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Last Map Update: Sat, Sep 26, 2026 at 7:48:11 am MST

Watches, Warnings & Advisories

National Weather Service Salt Lake City, UT

National Weather Service Grand Junction, CO

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National Weather Service Albuquerque, NM

National Weather Service NWS Tucson Arizona

Hydrologic Outlook

Incoming Tropical Moisture

Excessive Rainfall Outlook

Precipitation Timing

Harvest Moon

A west coast low-pressure system will combine with enhanced moisture from a pair of tropical systems to bring chances for showers and thunderstorms from late Sunday through Tuesday. There is still uncertainty in the impacts and exactly how much rainfall we might see across northern Arizona.

The latest Excessive Rainfall Outlook from WPC has most of northern Arizona in the "Slight" risk category on Monday and Tuesday.

Shower and thunderstorm chances will ramp up late Sunday through Monday morning. The peak window is Monday afternoon through Tuesday afternoon, then chances gradually decline late Tuesday into Wednesday.

The tenth Full Moon of the year will occur on September 26th at 9:49 am MST. This is the Harvest Moon as it is the Full Moon that occurs closest to the Autumnal Equinox and is named so as many crops are being harvested at this time of year. As a bonus, on Saturday night about one hour after moonrise, the planet Saturn will be visible to the lower left of the rising moon.