Area Forecast Discussion
Issued by NWS Flagstaff, AZ
Issued by NWS Flagstaff, AZ
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812 FXUS65 KFGZ 180525 AFDFGZ Area Forecast Discussion National Weather Service Flagstaff AZ 1025 PM MST Mon Jun 17 2024 .SYNOPSIS...Temperatures will trend closer to normal through Wednesday, before warming again late in the week. A chance of thunderstorms will develop daily from Thursday through the weekend. && .UPDATE...Winds have subsided to below wind advisory and red flag warning criteria. Therefore, allowed both products to expire at 8 PM MST. Otherwise, the current forecast is in good shape with no major updates required. && .PREV DISCUSSION /432 PM MST/...Critical fire weather conditions are ongoing across northern Arizona as a trough moves across the northwest U.S. Winds so far have been ranging between 25 and 55 mph and will continue to do so this afternoon. After today, the main low will move northeast but a trough will remain stalled over the western U.S., keeping breezy southwesterly winds (15-30 mph) each afternoon for Tuesday and Wednesday. Accompanying the system is cooler weather with Tuesday`s highs expected to be ~5 degrees below normal. Later this week into the weekend, confidence remains high that monsoonal moisture will start to increase as high pressure builds and shifts west. Confidence remains low in precipitation amounts and overall coverage for the weekend as the high shifts. Moisture overall looks limited and elevated so receiving any meaningful moisture will only be for a lucky few. Right now Friday looks to be the best day for coverage. In reality, these storms provide more of a wildfire risk as they could help contribute to new lightning started fires. As we head into the weekend and into next week, the high parks almost directly overhead, resulting in more suppression than actual moisture input...though shifts in placement would result in variations in precipitation so will continue to have to monitor over the coming days. && .AVIATION...Tuesday 18/06Z through Wednesday 19/06Z...VFR conditions will persist through the period. SW wind gusts in the 20-25 knot range will develop over northern Arizona late Tuesday morning, then subside Tuesday evening. OUTLOOK...Wednesday 19/06Z through Friday 21/06Z...VFR conditions will prevail over northern Arizona through the period. Dry conditions and southwesterly wind gusts up to 20 knots are forecast for Wednesday. For Thursday, there will be a chance for afternoon showers and thunderstorms east of a line from KPAN- KINW-KPGA. SW wind gusts up to 30 knots is also forecast across eastern Arizona, with SW wind gusts in the 20-25 knot range along and west of I-17 and Highway 89. && .FIRE WEATHER...Overnight through Wednesday...Winds will be relatively lighter with afternoon gusts 15-25 mph out of the SW/S. Afternoon RHs will continue falling into the teens to single digits. Thursday through Saturday...Warming temperatures and SW breezy afternoons gusting 15-30 mph are expected Thursday and Friday. Increasing moisture will result in higher RHs and shower and storms chances starting Thursday. Winds become lighter for the weekend. && .FGZ WATCHES/WARNINGS/ADVISORIES...None. && $$ PUBLIC...TM/RKR AVIATION...TM FIRE WEATHER...TM For Northern Arizona weather information visit weather.gov/flagstaff