Post by scannerman5555 on Jan 4, 2005 19:03:28 GMT -5
Special Weather Statement
Statement as of 7:00 PM EST on January 4, 2005
... A wintry mix of precipitation expected Wednesday night into
early Thursday morning...
A warm front will remain draped in a west to east fashion across the
Ohio Valley to the mid Atlantic states through Wednesday. A wave of
low pressure will ride along the front late tonight into the day
Wednesday. At the same time... cold Canadian high pressure will build
in from the north. Another wave of low pressure will move south of
the region late Wednesday night into Thursday.
As low pressure develops over the Ohio Valley and mid Atlantic states
tonight... light rain will spread into our region by around daybreak.
High pressure to our north will filter in colder air as Wednesday
progresses. This could change the rain over to wet snow Wednesday
night.
At this time... computer model solutions are differing with the amount
of cold air that gets filtered down from Canada. If enough cold air
can move into the area by Wednesday afternoon... the rain may change
to wet snow earlier than forecast... by the early afternoon hours. If
it does... it will be wet as surface temperatures will likely be above
freezing... and will not easily accumulate on roadways. There is an
outside chance that an inch or two of snow could fall Wednesday
afternoon.
Wednesday night will likely see even more in the way of wintry
precipitation as even colder air gets drawn in at the surface. Expect
snow or a mix of snow and sleet to transition to freezing rain during
the course of Wednesday night... and continue into Thursday morning.
Enough ice may accumulate to cause very slippery travel for Thursday
morning's rush hour. Warmer air works in Thursday morning... which
will allow for a transition to plain rain.
The upcoming weather situation is a highly changeable one. A couple
of degree drop or rise in temperatures at the surface and aloft will
determine precipitation type Wednesday afternoon through Thursday
morning. Keep abreast of the latest National Weather Service
forecasts for additional information.