September weather sets record
October 4, 2012
Autumn temperatures are on the way, weather officials say, but summer continues to display tenacity.
A record was set for September in the greater Sacramento area with 26 consecutive days of 90-degree or warmer temperatures.
"It has been warmer than normal," said Darren Van Cleave, meteorologist for the National Weather Service.
What has been delaying the arrival of cooler, more seasonally consistent temperatures is a stubborn high-pressure system, known in the weather prediction business as a Rex Block, Van Cleave said.
“I usually don’t get into a bathing suit after August, but it was such beautiful weather today.”
— Heather Boche,
A Rex Block is a high-pressure system that establishes itself due north of a low-pressure system. The block is known for deflecting other systems and for staying in a particular location for a long time, Van Cleave said.
The present system has not only affected the interior of Northern California but has brought high diurnal temperatures to much of the American West, Van Cleave said.
However, forecasters are calling for the Rex Block's stint to end near the end of the week, when highs are expected to dip dramatically.
A low-pressure system that currently hovers about 500 miles off the coast of California is due to hit the Sierra foothills Friday, when the high temperatures is predicted to be 76 degrees, Van Cleave said. While temperatures often hovered around 90 degrees in recent weeks at the Nevada County Airport, where the weather service unofficially tabulates temperatures, most of the highs stayed in the high- to mid-80s, said Johnnie Powell, a meteorologist with the weather service.
Nevertheless, on Friday, Saturday and Sunday, the temperatures were consistently 89 degrees, 10 degrees higher than the normal temperature for those days, Powell said.
Dirk Dusharme, an Auburn resident who spent the day along the shores of the South Yuba River Monday to get a respite from the heat, said he regularly attends Nevada County's Celtic Festival and said last weekend's was the hottest he can remember.
"Normally, the temperatures are pretty comfortable, but this year it was warm," he said.
Heather Boche of Colfax said she welcomed the opportunity to get a little added sunbathing in before temperatures create the need to get out the autumn clothes.
"I usually don't get into a bathing suit after August, but it was such beautiful weather today," she said.
Forecasters said temperatures will peak today with an expected high of 91 degrees before cooling off to 81 degrees Thursday with cooler temperatures following throughout the weekend.
To contact Staff Writer Matthew Renda, email email@example.com or call (530) 477-4239.
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