Wednesday, April 15, 2015

Thunderstorms In Eastern Pima County

Yesterday afternoon provided a reminder that summer thunderstorm season is slowly approaching, as there were buildups and some thunderstorms around late in the afternoon. I took these photos right around 5:30 pm MST - top is looking north toward the Catalinas and below is looking toward the southeast, where thunderstorms were developing and moving eastward.

Jack Diebolt sent the above radar image that was from a bit after 6:30 pm. Graphic below shows detected CG flashes during the evening through 11:00 pm MST (from Vaisala). The storm that moved eastward, south of I-10, was fairly strong during portions of its life. Pioneer Airfield (located southeast of the strongest cell) reported a NW wind gust of 54 mph at 8:03 pm. It is quite probable that the storm moving across the Cienega Grasslands north of Pioneer Field produced some wind gusts that reached severe levels (>56 mph). Two ALERT stations, impacted by the echoes shown above, recorded rainfall - Sahuarita had 0.35" and Davidson Canyon reported 0.24". So, an interesting afternoon.

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