FXUS65 KTWC 070951 AFDTWC Area Forecast Discussion National Weather Service Tucson AZ 251 AM MST Mon Apr 7 2025 .SYNOPSIS...This week will see a strong ridge of high pressure move into the area. This will bring a significant warm-up in afternoon temperatures with some record highs across the region expected Thursday through Saturday. && .DISCUSSION...Main theme for the upcoming work week will be the significant warm-up that will take place under building high pressure aloft leading to record or near record highs Thursday, Friday and Saturday. Latest NBM probabilities for Tucson recording the first triple-digit high of 2025 on Friday is up to 70%. If this occurs, it would be the earliest first triple-digit high date on record for Tucson with the previous being April 19 (1989). High temperature cool off Sunday into early next week but remain above normal. && .AVIATION...Valid through 08/12Z. SKC. SFC winds vrbl and terrain driven less than 10 kts thru 07/19z then NWLY 6-11 kts thru 08/03z then vrbl at 10 kts or less thru the end of valid pd. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Dry conditions and warming temperatures will be the story this week as a strong ridge of high pressure builds over the area. Min RH values will be in the single digits each day. Expect afternoon gustiness each day due to strong surface heating. && .CLIMATE...Record or near record high temperatures are forecast Thursday thru Saturday. Date Apr 10 Apr 11 Apr 12 FCST RCD/YR FCST RCD/YR FCST RCD/YR Tucson Intl Airport 96 97/2023 100 99/2023 96 96/1988 Ajo 99 101/1989 101 100/2023 96 100/1936 Kitt Peak 80 77/1989 82 79/1989 80 75/1988 Organ Pipe Cactus 100 99/2023 102 99/2023 96 98/1985 Picacho Peak 94 100/2023 97 100/2023 95 97/2008 Safford Ag Station 95 95/1989 96 95/2023 95 93/1960 Sierra Vista 89 89/1989 92 89/2018 89 90/2018 Tombstone 88 90/1960 92 91/2018 89 91/2018 Willcox 90 90/1972 92 91/1946 91 92/1946 Looking at the records above, Tucson flirted with the earliest first 100 degree high exactly two years ago. The average temperature for the first six days of April for Tucson is running 7 degrees BELOW normal. After the next 7 days, the average temperature for April will be slightly over 1 degree ABOVE normal. Or when looking at rankings to date, going from 33rd coolest to 19th warmest. Quite an upcoming change. && .TWC WATCHES/WARNINGS/ADVISORIES...None. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson