A storm front moving through the Sacramento region is bringing thunderstorms and rain to the foothills, with some areas reporting an inch of rain.
That front is also bringing cooler temperatures to the region and the chance of showers falling in foothill areas through Saturday, said Dan Keeton, meteorologist with the National Weather Service.
“Some of the storms are producing a significant amount of lightning, although we have not had any reports of lightning strikes,” Keeton said.
He said heavy downpours and road flooding has been reported in Roseville.
There have also been reports of street flooding in Folsom, where an inch of rain has fell, Keeton said.
Scattered showers and below normal temperatures are expected through Saturday, Keeton said.
A 30 percent change of rain is forecast for tonight, mainly in the foothills, and a 20 percent chance of rain Friday. The intensity of the showers will lessen through tonight.
“It will be cooler than unusual through the weekend, with temperature forecast in the low-70s and overnight lows in the mid-50s,” Keeton said.
Typically, daytime and nighttime highs are 10 degrees warmer in mid-May in the Sacramento region.
A similar storm visited Sacramento a week ago, delivering 0.19 inches of rain.
“This weather is not unusual. It’s thunderstorm season,” Keeton said. “It feels unusual since we have had such a dry couple of years.”
In the Sierra, the cold conditions associated with the late season storm is predicted to produce light snowfall.
The detailed forecast from the NWS for the Sacramento region:
Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 51. South wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 30 percent. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday: A 20 percent chance of showers after noon. Partly sunny, with a high near 73. South southeast wind 8 to 11 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night: Mostly cloudy, with a low around 51. Southwest wind 7 to 10 mph becoming south southeast after midnight.