Area Forecast Discussion
Issued by NWS Flagstaff, AZ
Issued by NWS Flagstaff, AZ
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629 FXUS65 KFGZ 180958 AFDFGZ Area Forecast Discussion National Weather Service Flagstaff AZ 258 AM MST Wed Sep 18 2024 .SYNOPSIS...Slightly below normal temperatures and breezy conditions continue for the rest of this week. Only a slight chance of showers for late Friday and Saturday over northern Arizona, but mostly dry conditions otherwise. A benign and warmer weather pattern develops for next week. && .DISCUSSION...There are two areas of low pressure over the western part of the US this morning. One low is over Montana and Wyoming. This the low that brought windy conditions over northern Arizona on Monday. Another low is quickly following on the first`s heels and is currently just along the coast near the OR/CA border. The second low will move south along the coast reaching the LA Basin by Thursday afternoon before moving east to the Las Vegas area by Friday afternoon. The low will weaken and eject to the Four Corners area by mid-day Saturday. A ridge will then build over the Great Basin and extend southwestward well in into the Pacific through Tuesday. This pattern will bring daily south to southwest winds in the 15 to 25 mph range, followed by crisp and cool nights as the winds decrease. As the low transitions across Arizona later this week and into the weekend, a few light showers may develop. Additionally, high temperatures will dip a few degrees below average. High temperatures will warm to above average as high pressure returns next week, for a early fall warm- up. && .AVIATION...Wednesday 18/06Z through Thursday 19/06Z...Expect VFR conditions. Sfc winds SW10-20g25-30kts from 18Z-02Z. OUTLOOK...Thursday 19/06Z through Saturday 21/06Z...Expect VFR conditions. Sfc winds SW10-20g25-30kts from 18Z-02Z each day. && .FIRE WEATHER...Today and Thursday...Dry conditions with seasonably cool temperatures. Daytime winds southwest 15 to 20 mph, with gusts up to 30 mph, becoming light and variable overnight. Friday through Sunday...Seasonably cool temperatures continue through Saturday, with temperatures rising on Sunday. Breezy southwest winds on Friday, becoming light from the north the weekend. Mainly dry conditions, outside of a slight chance for showers over far northern Arizona on Friday and Saturday. && .FGZ WATCHES/WARNINGS/ADVISORIES...None. && $$ PUBLIC...MAS AVIATION...Peterson FIRE WEATHER...Humphreys For Northern Arizona weather information visit weather.gov/flagstaff