Area Forecast Discussion
Issued by NWS Flagstaff, AZ
Issued by NWS Flagstaff, AZ
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076 FXUS65 KFGZ 132114 AFDFGZ Area Forecast Discussion National Weather Service Flagstaff AZ 214 PM MST Thu Nov 13 2025 .SYNOPSIS...Warm temperatures and dry conditions continue through Friday. An approaching storm system will bring cooler temperatures, gusty winds, and chances for rain and mountain snow over the weekend. Cooler temperatures and unsettled conditions look to continue through next week. && .DISCUSSION...High pressure shifts to the east today as a low pressure system approaches off the Pacific. The low becomes cut off as it moves along the California coast, moving inland on Saturday, then moves towards the east-northeast through Sunday. Brief ridging occurs for Monday with another low digging down the west coast late Monday into Tuesday and crossing through the region Wednesday and Thursday. Taking a peek further out, the active pattern looks to continue into the end of next week/weekend. Through Friday...The highs influence across our region will begin to wane through tomorrow as the low over the Pacific starts to strengthen. While we will see cooling temperatures, they will remain well above normal through Friday. Also expect a gradual increase in cloud cover as the south to southwest flow deepens. Conditions will remain mostly dry, especially through Friday morning, with some isolated showers pushing in from the west towards Friday night. Saturday and Sunday...The low off the Pacific closes off and starts to move southward along the California coast. This will allow for the southerly flow to increase and we will see good moisture advection across the region. Precipitation will increase from west to east through the day, with periods of moderate to heavy rainfall possible Saturday night into Sunday. Most ensemble members have been consistent and keep the QPF amounts in the 0.50"-1.00" range, with the highest amounts along and south of the higher terrain. Locally higher amounts are also possible, especially if we see better forcing and higher precipitation rates as the low moves through the region. Areas to the north of the Mogollon Rim look to be drier as the best precipitation remains across central portions of the state. QPF amounts around 0.10"-0.30" seems reasonable in those areas. Another aspect of this system is the warmer air being pulled into the region. The latest model runs continue to trend warmer which will mean less snow and more rain across the forecast area. Snow levels will remain largely above 8000 feet through much of the weekend, and that is where we expect any accumulations to take place. As the low pulls off to the north and east, some cooler air will be dragged down and into the area, likely late Sunday. One hitch in the colder air arriving is the timing with any precipitation. There may not be much precipitation occurring later Sunday but with the snow levels dropping down to around 7000-7500 feet, we may see some light snowfall, though accumulations will be pretty light (if any at all). Yet another item to note is the tightening pressure gradient across the state. Strong south to southwest winds are expected, mainly on Sunday. Wind gusts to 40 mph are likely, especially along and north of any terrain features. Temperatures will continue to drop off over the weekend with near normal temperatures on Saturday and a sharp drop to well below normal, where highs on Sunday will largely be 5- 15 degrees typical mid-November highs. Monday through Thursday...Brief ridging arrives on Monday but it doesn`t hang around for long nor does it have much influence over our region. Expect Monday to be kind of showery as moisture lingers over the area with cool temperatures across the region. Another low pressure system will develop and move through the Great Basin and into the Desert Southwest late Monday into Tuesday. This low will be able to bring in additional moisture and cold air with the potential for accumulating snows. Just where that will occur is still up in the air as there are quite few differences between the models when it comes to depth of the system and timing. So while it looks good for a continued active and wet pattern, confidence is still on the lower side when it comes to precipitation type (snow/rain). As this second low exits the region, there is the potential for another closed low to move through the region towards the end of the week. Plenty of time to see how these next systems unfold so stay tuned for updates! && .AVIATION...Thursday 13/18Z through Friday 14/18Z...VFR conditions, the only thing of note is isolated areas of haze/smoke due to prescribed burns. Winds S-SW 5-10kts, gusting to 20kts daytime. Light and variable or terrain driven overnight. OUTLOOK...Friday 14/18Z through Sunday 16/18Z...Isolated showers moving in from the west after 00Z Saturday, becoming more widespread west to east as Saturday progresses and becoming numerous Saturday night into Sunday morning. Mainly VFR conditions expected but MVFR is possible with heavier showers. Winds S 5-10kts, gusts to 20kts Friday, S 10-15kts, gusts 20-25kts Saturday. && .FIRE WEATHER...Friday and Saturday...Cooling trend begins with temperatures 5 degrees cooler on Friday and another 5 degrees cooler on Saturday. By Friday evening, there is a low chance of rain west of I-17/US89 with showers becoming more widespread west to east during the day on Saturday. Winds S-SW 10-15 mph with gusts up to 20 mph. Minimum afternoon RH 20-35% Friday, ranging from 25-30% eastern Arizona to 45-50% western Arizona on Saturday as next storm system moves in. Sunday through Tuesday...Widespread precipitation expected on Sunday, primarily in the form of rain with snow levels near 8,000 feet on Sunday, lowering to 7,500 ft Sunday night. Unsettled weather continues for the first half of the week with rain and high elevation snow chances continuing. Winds SW 15-20 mph gusting up to 30 mph Sunday, SW 10-15 mph on Monday and Tuesday. && .FGZ WATCHES/WARNINGS/ADVISORIES...None. && $$ PUBLIC...Meola AVIATION...Bernhart FIRE WEATHER...Bernhart For Northern Arizona weather information visit weather.gov/flagstaff