


Area Forecast Discussion
Issued by NWS Flagstaff, AZ
Issued by NWS Flagstaff, AZ
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535 FXUS65 KFGZ 090516 AFDFGZ Area Forecast Discussion National Weather Service Flagstaff AZ 1016 PM MST Wed Oct 8 2025 .SYNOPSIS...Isolated showers and thunderstorms have already begun this afternoon, with steadily increasing activity expected for the next several days. Widespread shower and thunderstorm activity will spread into the region from Thursday through at least late Saturday. Areas of heavy rain likely. Some flash flooding will be possible and a Flood Watch has been issued. Scattered shower and thunderstorm activity then continues from Sunday and into early next week. && .DISCUSSION...Early moisture surges are already producing isolated bands of showers and thunderstorms, even as far north as the I-40 corridor this afternoon. This moisture push will continue, as deep low pressure moves southward along the west coast, then eventually ejecting eastward by Saturday. In addition, bands of sub-tropical moisture from a decaying tropical storm will enter the region by Friday, with a cold front acting upon all this moisture Saturday. This will make for a very busy set of days from Thursday through at least Saturday, with the moisture then pushing southeastward Sunday. Flood Watches have been issued for much of the area. A compilation of model data indicates the most active areas will bisect the FGZ CWA from SW to NE, where 2-4 inches of rain may fall through the event. Additional upstream pressure falls may cause the moisture to bounce back northward a bit Monday and Tuesday, but not nearly as deep or organized. The remainder of the week will be downright cool, with brisk southwest through westerly winds and mainly dry. && .AVIATION...Thursday 09/06Z through Friday 10/06Z...There are a few isolated -SHRA across northern Arizona currently. VFR conditions expected for many areas through 12Z, before increasing chances for SHRA that will likely lead to reduced ceilings and visibilities. Look for sustained winds out of the SE through SW generally less than 10 kts and gusts between 15 and 20 kts through the period. Gusty conditions will be possible with any shower/storm. OUTLOOK...Friday 10/06Z through Sunday 12/06Z...Widespread SHRA/TSRA expected through the outlook period. Expect MVFR conditions and localized IFR conditions due to continuous periods of SHRA/RA and isolated TSRA. Winds on Friday will generally be light, becoming S-SW at 10-20 kts with gusts near 25 kts on Saturday. Gusty/erratic winds will also be possible in heavier showers/storms. && .FIRE WEATHER...Thursday and Friday...Expect widespread wetting rains, with the highest accumulations likely through Yavapai and Coconino counties. A Flood Watch will be in effect for most of northern Arizona through the period. Isolated strong to severe thunderstorms are also possible. Winds from the south through southeast 5-15 mph each day, but gusty and erratic winds can be expected near showers/thunderstorms. Saturday through Monday...The Flood Watch continues Saturday, with more widespread showers and thunderstorms. Storm coverage becomes isolated to scattered on Sunday and Monday. Daytime winds southwest 5-15 mph each day, but gusty and erratic winds can be expected near showers/thunderstorms. && .FGZ WATCHES/WARNINGS/ADVISORIES... Flood Watch from Thursday afternoon through Saturday evening for AZZ004>010-012-013-015-016-018-037>040. && $$ PUBLIC...JJ AVIATION...Konieczny FIRE WEATHER...Lewandowski For Northern Arizona weather information visit weather.gov/flagstaff