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Strong Thunderstorm could bring hail, strong winds to Southern Arizona

Posted at 6:34 AM, Dec 09, 2019
and last updated 2019-12-10 00:30:40-05

TUCSON, Ariz. - Live updates on winter storms in Southern Arizona Thursday Monday.

9:27 p.m.

3:40 p.m.

1:35 p.m.

Pima County updated its list of road closures:

  • Wentworth Road @ Tanque Verde Creek.
  • Tanque Verde Loop from Tanque Verde to Speedway.

1:05 p.m.

The Catalina Highway is closed Monday afternoon, as storms are expected to dump 6 to 11 inches of snow on Mt. Lemmon and Summerhaven later in the day. Only vehicles with chains or four-wheel drive will be allowed up the mountain.

10:04 a.m.

The Arizona Department of Public safety says there are multiple crashes near Picacho, with standing water on I-10. They're urging drivers to use caution in that area as storms pass through.

9:50 a.m.

The National Weather Service issued a severe thunderstorm warning for north central Pima County. The range extends from Picacho Peak State Park to 15 miles southest of Avra Valley. The storm is moving eastward at 20 mph, with winds up to 60 mph and penny-sized hail. Damage to roofs, siding and trees. Marana, Avra Valley, Picacho Peak State Park, Picture Rocks, Red Rock and Silverbell areas could be affected, as well as I-10 between mile markers 218 ad 231 and Route 79 between mile markers 102 and 108.

9:43 a.m.

8:25 a.m.

Pima County announced that the intersection of Wentworth Road and Tanque Verde Creek was closed.

8:20 a.m.

According to an alert from, Doppler radar tracked a strong thunderstorm 10 miles southwest of Kitt Peak, moving northeast at 20 mph.

Dime-size hail and winds of 40 mph were possible with the storm.

Affected areas included Topawa, San Miguel, Kitt Peak, Ali Chuckson, Vamori, Choulic and Coldfields.

6:30 a.m.

On Monday, the National Weather Service issued a flood advisory for the Tucson region and surrounding areas.

The advisory lasts until 8 a.m. and covers Tucson, Casas Adobes, Marana, Oracle, Catalina, Oro Valley, Drexel Heights, Flowing Wells, Tanque Verde, Vail, SaddleBrooke, South Tucson, Three Points, San Manuel, Pascua Pueblo Yaqui Reservation, Tortolita, Mount Lemmon and Sabino Canyon.

I-10 between mile markers 236 and 276, as well as I-19 between mile markers 53 and 63, Route 86 between mile markers 152 and 171 and route 77 between mile markers 70 and 97 are all included.

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