Isolated strong-to-severe thunderstorms are expected today, especially to the north and west of Tucson. The attached loop is from the Storm Predictions Center and depicts the HREF (Hi-resolution ensemble forecast) probability of outflow winds in excess of 30 knots. The higher probabilities indicate the most likely areas for strong outflows. What is not shown, is the 10-30 percent probability of winds in excess of 50 knots in the bullseye of the image. Strong outflows like these will be capable o

At 7:45 pm, radar starting to get more active , with thunderstorms north, west and southeast of the Tucson Metro. Expect strong wind gusts and very heavy rainfall with the stronger thunderstorms. Movement is generally to the south/southwest at 10 mph. | US National Weather Service Tucson Arizona

🌵🌧️The combination of mid and high level moisture along with some weak lift aloft will result in scattered light showers with a slight chance of a thunderstorm mainly southeast of Tucson today. A low pressure system tracking through Sonora Mexico will result in a slight chance of showers Sunday into Monday along the International Border. Rainfall amounts will have little to no impact this weekend. | US National Weather Service Tucson Arizona