Tropical Storm Arlene made landfall between 4am and 5am CDT near the city of Cabo Rojo, Mexico. Maximum winds were recorded around 65 mph before making landfall, about 9 mph lower than hurricane status. Arlene will continue to deteriorate as it continues moving west into the Sierra Madre Oriental Mountains. This will be a very dangerous situation for many folks living in this area of Mexico, as they have to deal with lots of flooding. Rainbands from Arlene have reached as far north as central Texas.
As far as rainfall in the Rio Grande Valley, light to moderate rainfall has fallen over the area since Tuesday, 6/28. The latest rainfall totals, as of Wednesday afternoon, from Brownsville’s Doppler Radar are:
REST OF THE NATION
Looking at 500mb (~18,000 ft), above, most of the central U.S. is under a ridge of high pressure. A dry and stable airmass is set in this area and will see mostly sunny to partly cloudy skies until a shortwave trough, located over the southwest U.S., moves into the area tomorrow.
Today, there is a chance of severe weather east of the shortwave trough axis. This includes states such as: eastern Utah, Colorado, southeast Wyoming, western Nebraska, North & South Dakota, and Minnesota. As the shortwave trough moves northeast, so will the severe threat. The Storm Prediction Center has issued out day 1 (today) and day 2 (tomorrow) severe threat:
*Areas in yellow are considered to be in a slight risk of severe storms*
*Areas in green are areas that may see non-severe thunderstorms*
Taking a look a the surface conditions around the nation, you can see a stalled out front along the Gulf coast states. This will be generating sea breeze showers and thunderstorms during the daytime, as long as the front is stalled there. So, even though there is an upper level ridge affecting the mid-and-upper level of this area, surface conditions can affect lift and precipitation.