Wednesday, April 16, 2008

Weather Disscusion



















Relatively quiet weather to continue over next five or so days. As you can see on the surface map high pressure and quiet weather continue to dominate the east. As you can see on the temps map the whole east is very warm and will get slightly warmer over the next couple of days, but as the cut off low moves east it will bring some slightly cooler air. Here is the cut off low forecast/discussion:
-On the surface map, you can see a low over New Mexico. This low will cut off from the main flow because a split flow jet stream will be dominating. The storm will be between the two jet streams and the steering currents so it will just drift around Thursday-Sunday. As the storm drifts around it will bring some moisture and cooler air with it, so 1-2 days of clouds, showers, and slightly cooler weather can be expected with this system, especially north and west of it. There could be some snow in the Rockies tonight/tomorrow, and some severe weather in Texas/OK/AK Thursday-Friday. Other than that this system will bring little more than clouds and showers.
-After the upper low around 3 days of quiet weather will befall areas in the east. Temperatures will shoot up with a southerly wind. A front will set up from the Rockies through the northern Plains along the jet stream ahead of an approaching trough (see fourth image). Waves of low pressure will ride up this front as it slowly moves east. Since the front will be moving slowly some areas could see a couple days with a chance for rain and storms since heat and humidity will be surging northward well ahead of the front. This could cause some flooding problems. There could also be some severe weather along and ahead of the cold front. Right now it does not look like a huge outbreak but it will need to be monitored. After this front moves through, (by Monday in the northern Plains, Ohio on on Wednesday, and the east coast late Thursday if nothing changes from now) there are some questions but below normal temps are possible in a lot of areas. More on this system later.

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