Ample MoistureApril 30th, 2013 at 9:33 am by Jeremy Wheeler under Weather
You may have noticed that the humidity has increased quite a bit in the last couple of days. Many ladies heading out the door have been worried about bad hair days returning. Of course as my coworker Cheryl Tan said: “There are no bad hair days if you have enough hair spray”. Yesterday we had widespread rainfall as predicted. It became more showery in the afternoon, but it put down a solid 1.5″ across the region. I had many weather watchers and instruments record readings close to that. Today we had more fog and drizzle than rain. The fog was very thick in many locations. There were even 4 school delays in North Carolina.
A large area of higher moisture was pushing in off of the ocean. This helped create the rain yesterday, and it led to the reduced visibilities this morning. We’ll hold onto a lot of clouds today with some peeks of sunshine.
I do expect pockets of drizzle, but I don’t see a high chance for actual rain showers. (20-30%). The winds will continue to bring in the cool marine air from the Atlantic. This is coming off of the area of high pressure near Nova Scotia. There is also a weak trough near the coast. This is a line of lower pressure that is also a windshift line. It is where the isobars kink on a map, as opposed to a close area of low pressure where the isobars connect. Anyway, that will help to create a few of those showers in the region.
Tomorrow the models show a deeper layer of moisture. So the chance for rain goes up a bit. (40-50%). Our high temperatures will be in the mid-upper 60s for the next few days due to this cool weather pattern. There will be some heat to our west today with highs in the 70s and 80s across parts of the Plains and Midwest states.
The heat to our west will be replaced by a large and unseasonably cold air mass. This will be accompanied by an upper level low and more wet weather. As we go into the weekend that system will sit over the central U.S. for a few days. Meanwhile we will develop more high pressure along the coast.
Finally, whether or not you believe in Global Warming, you have to acknowledge the abnormally cold air that has resided over other parts of the country recently. Here is an article from USA Today that sums up some of the recent cold: Cold Weather Pattern I talked in a previous blog about how the persistent and abnormal cold/warm weather patterns over the last couple of years can be attributed to very long blocking patterns.
Meteorologist: Jeremy Wheeler