There is a risk of severe frost for Cochise County and surrounding areas



According to the National Weather Service, several areas outside of Tucson were under a severe freeze warning from Saturday night into Sunday morning.

The warning has been issued for: Cochise County, Santa Cruz River Valley/Altar Valley, Upper San Pedro River Valley, Eastern Cochise County below 5,000 feet and Upper Gila River Valley.

Jim Meyer, weather service meteorologist in Tucson, said the severe freeze watch would not impact Tucson.

Hard frost occurs when temperatures fall below 28 degrees. Meyer said it was unusual for temperatures to be so low this time of year. Typically around this time these areas will see the last frost of the season, below 31°C, but no hard frost, according to Meyer.

The warning came primarily as a precautionary measure for those early in the growing season.

“Since we expect severe frost there below 28 °C and the growing season has already started for some things, we have issued the warning, even though severe frost often occurs there in winter.”

The hard freeze observation comes after a cold weather system that Meyer said would pass fairly quickly. Although they weren't expecting much rain, he said the cool air behind it would likely be pushing.

Meanwhile, a wind advisory was in effect for Tuscon from 8 a.m. Friday until 9 p.m. There was a 30% chance of rain Saturday evening with high temperatures in the 70s Friday and Sunday, but dropping to 62 degrees Saturday.