Post by James on Dec 14, 2007 15:53:08 GMT -5
A winter storm is currently coming together in the Central Plains and will affect the region tomorrow afternoon through the day on Sunday. There is currently a Winter Storm Watch posted for the entire viewing area for Saturday afternoon through Sunday morning.
Tonight will remain tranquil as high pressure continues to filter in cooler air from the north and lows will fall into the mid to upper 20s in the suburbs to lower 30s in town. Saturday, highs will remain quite cool as we only expect them to reach the mid 30s. The potent area of low pressure will advance from the southwest towards our region and begin to cause some precipitation in the afternoon hours, probably around 3pm. The precipitation should begin as a snow, sleet and freezing rain mix and continue through the evening hours.
Farther to the east, the wintry mix will change over to rain more quickly than it will to the west. There is a possibility that frozen precipitation won't even change over to rain in the higher elevations to the west. Icing will be the primary concern with this system as there will be a layer of warmer air overhead. Depending on the depth of this layer, precipitation will either fall as sleet or freezing rain before changing to mostly rain in the overnight hours.
On Sunday, energy from this system will transfer to the coast and the low will deepen considerably, pulling the system to the northeast and leaving very windy northwesterly winds around 30 mph in its wake. Highs are only expected to reach the mid 30s. Precipitation amounts will be tricky to forecast around here as a mix is anticipated in the immediate DC area before changing to all rain, but considerable icing will be possible west of the Blue Ridge.
Monday will remain cool with highs in the upper 30s under partly cloudy skies. High pressure will take over into the middle of next week, and high temperatures will rebound into the mid 40s.
Tonight will remain tranquil as high pressure continues to filter in cooler air from the north and lows will fall into the mid to upper 20s in the suburbs to lower 30s in town. Saturday, highs will remain quite cool as we only expect them to reach the mid 30s. The potent area of low pressure will advance from the southwest towards our region and begin to cause some precipitation in the afternoon hours, probably around 3pm. The precipitation should begin as a snow, sleet and freezing rain mix and continue through the evening hours.
Farther to the east, the wintry mix will change over to rain more quickly than it will to the west. There is a possibility that frozen precipitation won't even change over to rain in the higher elevations to the west. Icing will be the primary concern with this system as there will be a layer of warmer air overhead. Depending on the depth of this layer, precipitation will either fall as sleet or freezing rain before changing to mostly rain in the overnight hours.
On Sunday, energy from this system will transfer to the coast and the low will deepen considerably, pulling the system to the northeast and leaving very windy northwesterly winds around 30 mph in its wake. Highs are only expected to reach the mid 30s. Precipitation amounts will be tricky to forecast around here as a mix is anticipated in the immediate DC area before changing to all rain, but considerable icing will be possible west of the Blue Ridge.
Monday will remain cool with highs in the upper 30s under partly cloudy skies. High pressure will take over into the middle of next week, and high temperatures will rebound into the mid 40s.