Arctic Outbreak Forecast

Arctic Outbreak Forecast Issued: 08:00 PM Saturday November 24, 200=
1 Surge of Arctic Air Possible Cold air under strong high pressure is =
poised to move south from the Arctic regions of Canada and Siberia this com=
ing week. By normal standards, this air will not be all that cold, consider=
ing it is of Arctic origin. But, considering the time of year and how unsea=
sonably warm it has been recently, this punch of Arctic air will bring an a=
brupt change for most of the week ahead. A deep trough of low pressure, c=
urrently digging into the southwest U.S. will traverse the central states e=
arly this week, opening the gates behind to the air that is pooled in north=
ern Canada. Beginning late Sunday or early Monday, the Arctic front will be=
gin its plunge into the lower 48, reaching the Gulf Coast overnight Monday =
night. The potential is for temperatures, across all the eastern half of =
the U.S., except Florida, to plummet as much as 30 degrees from Tuesday to =
Thursday, but the coldest nights could be later in the week as the skies cl=
ear. For Florida, the greatest temperature changes won't come until the wee=
kend. On a more uncertain note, there are also early indications of possi=
ble winter weather after midweek from east Texas across northern Louisiana,=
Mississippi, Alabama and northward into the Midwest. We will continue to=
monitor this developing weather situation and the potential for winter wea=
ther. You may view an updated version of this Arctic Outbreak in your perso=
nal web page's long range section each evening. Jeff Reichelt =09