Tropics: Disturbance Weakening over Gulf
"...enough of the system may remain intact to bring at least some rainfall to northeastern Mexico and perhaps part of the lower Rio Grande Valley."
The disturbance that rolled across Florida Wednesday with drenching showers and locally gusty thunderstorms is aiming for western Gulf of Mexico coast.
The system is moving so fast that it will not have time to develop over warm Gulf of Mexico waters.
However, enough of the system may remain intact to bring at least some rainfall to northeastern Mexico and perhaps part of the lower Rio Grande Valley, depending on the exact track.
The main center of weak circulation and much of the showers and thunderstorms appears to be aiming at the upper coast of Mexico. It is possible that some fringe moisture will reach as far northward as the lower Texas coast.
Brownsville, Texas, has only received 0.27 of an inch of rain since Jan. 17, 2011, or a mere 4 percent of their lean normal rainfall of around 7.50 inches.
Much of southern Texas and northern Mexico is in the same desperate situation in terms of rainfall stemming from long-term severe drought.
While certainly not likely to be a drought-buster anywhere the weak disturbance makes landfall, any rain would be welcomed, as long as it does not lead to flash flooding.
It is possible, where the moisture piles onshore, that a general 0.50 to 1.00 inch of rain could fall.
At this point, it does not appear that enough rain will fall to cause flooding issues, due to the fast movement of the disturbance.
It would be interesting to see if this disturbance makes a complete circle by possibly traveling inland over the Rio Grande Valley then northward through the Great Plains of the U.S., where it was born.
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Daily U.S. Extremes
past 24 hours
| Extreme | Location | |
|---|---|---|
| High | 107° | Death Valley, CA |
| Low | 28° | Daniel, WY |
| Precip | 2.39" | Alexandria, MN |
WeatherWhys®
People need to pay close attention to the UV index during this time of year. On a sunny day late in the spring and into the summer, the UV is usually at least an 8, which is very high. Readings over 11 are considered extreme values in which only 10 minutes of full exposure to the sun will produce a sunburn.
This Day In Weather History
New Hampshire (1814)
A tornado crossed Merrimac, Litchfield, Londonderry and North Chester. The same storm produced hailstones that had an 11-inch circumference and weighed 1/2 pound.
Northeast (1989)
More rain in an already wet month. Monthly totals topped 11 inches at New York City, 9 inches at Bridgeport, Conn., and 8 inches at Baltimore (all three totals set records for May).
Rough Weather
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