CHICAGO (AP) —
Unseasonably cool temperatures will arrive next week in the Midwest and as
far south as Arkansas and Oklahoma.
It is not,
however, the second coming of a polar vortex, something the National
Weather Service says it regrets tweeting earlier this week.
Underground meteorology director Jeff Masters says the weather pattern is
similar to those dreaded words, but the key difference is that the chilly
air mass isn't coming directly from the arctic.
Masters says that
Typhoon Neoguri in Japan altered the path of the jet stream and allowed
polar air to spill out of Canada. That means next week's temperatures will
be as much as 15 degrees cooler than normal in the Midwest and could reach
90 in the normally temperate Pacific Northwest.