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Area Forecast Discussion
Issued by NWS Flagstaff, AZ
Issued by NWS Flagstaff, AZ
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041 FXUS65 KFGZ 200528 AFDFGZ Area Forecast Discussion National Weather Service Flagstaff AZ 1028 PM MST Fri Jul 19 2024 .SYNOPSIS...Scattered showers and thunderstorms are expected each day through next week. Temperatures will remain a bit above average through the weekend, with light winds. && .DISCUSSION...Most convection has come to an end this evening as outflows clear the area and surface heating diminishes. Convection was limited most of the day by a cap around 250mb and some warming from about 450-200mb, mainly due to the strength of the high cell that is nearly directly overhead. This high will wobble around for much of the forecast period, a bit back westward, then back east, but not much movement overall. The amplitude will vary slightly, the days where hghts decrease a bit will release a bit more CAPE, but nothing really stands out. One thing that continues to hold true is that this is not a very favorable position. Although we will not dry out, moisture will largely be provided by daily rainfall/outflows, not by advection from the Gulf of California. This is not ideal, but also not game ended. Steering flow will slow continue to favor areas along, south and southwest of the Mogollon Rim, really well into next week, until the high re-positions farther east, if it ever does. One thing to watch will be heat, we have been flirting with EHW criteria all week, it may be prudent to issue for the Grand Canyon zones over the weekend, will let the next shift look at that. That`s about it, trends are on track, no updates are needed. && .AVIATION...Saturday 20/06Z through Sunday 21/06Z...Outside of convective activity, VFR conditions and generally light winds. Saturday 18Z-03Z Sunday, expect SCT SHRA/TSRA and ISOLD +TSRA that may produce brief MVFR conditions and gusty/erratic winds. OUTLOOK...Sunday 21/06Z through Tuesday 23/06Z...Outside of any convective activity, expect VFR conditions and generally light winds. From 18Z-03Z each day, SCT SHRA/TSRA and ISOLD +TSRA may produce brief MVFR conditions and gusty/erratic winds. && .FIRE WEATHER...Saturday and Sunday...Daily chances for showers and thunderstorms continue, with above normal temperatures. Storms may produce heavy rain and gusty outflow winds. Outside of any storm activity, expect variable winds 5 to 15 mph. Monday through Wednesday...Daily chances for showers and thunderstorms continue, with above normal temperatures. Storms may produce heavy rain and gusty outflow winds. Outside of any storm activity, expect variable winds 5 to 15 mph. && .FGZ WATCHES/WARNINGS/ADVISORIES...None. && $$ PUBLIC...Peterson AVIATION...Peterson FIRE WEATHER...Peterson For Northern Arizona weather information visit weather.gov/flagstaff