Area Forecast Discussion
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
110 FXUS65 KTWC 212051 AFDTWC Area Forecast Discussion National Weather Service Tucson AZ 151 PM MST Sat Sep 21 2024 .SYNOPSIS...Dry conditions with cooler mornings over the weekend. High pressure will push temperatures back to well above average for the coming week. && .DISCUSSION...Breezy today with cooler air as a low pressure system pushes through the state. Best moisture / dynamics couplet well north of our area with a dry frontal passage for SE AZ. Cooler Sunday morning with 40s in eastern valleys and 50s to lower 60s across the lower deserts. A strong ridge of high pressure building in from the west will bring above average temperatures to western states, and will support a return of 100 degree temperatures for Tucson by Tuesday or Wednesday. The ridge will buckle a bit later in the week, but ensemble means keep it hanging in across Arizona and northwest Mexico into next weekend as we remain between troughiness near the west coast and a remnant low sagging down east of the area. && .AVIATION...valid through 23/00z. SKC. SFC winds westerly winds of 10-15 mph with gusts to around 25 mph. Winds diminishing in the early evening, generally under 8 mph overnight. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Dry conditions with temperatures a few degrees below normal Saturday. 20-foot winds will generally be 10 to 15 mph with occasional afternoon gust, especially east of Tucson. Min RHs will generally be 14 to 20 percent in the lower locations and 20 to 30 percent in the higher locations. Starting Sunday, high pressure will bring above normal temperatures and lighter and terrain driven winds through next week. && .TWC WATCHES/WARNINGS/ADVISORIES... None. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson