LDN - Weather

The nation's weather

[July 19, 2010] (AP) Active weather over the Great Lakes was forecast to advance eastward into the Northeast on Monday as low pressure over the Great Lakes moved toward southeastern Canada.

(Click on map for larger image.)

Showers and thunderstorms would continue developing along and ahead frontal boundaries that would become stretched from the lower Great Lakes through the Midwest. Forecasters said clusters of thunderstorms developing across New England and portions of the upper Mid-Atlantic might turn severe with damaging winds. Severe weather might also develop across the mid-Mississippi and Ohio valleys. While damaging winds would be the primary concern with severe storms in these regions, severe hail and tornadoes were also possible.

To the south, rich moisture over the Southeast would produce more scattered showers and thunderstorms across the Gulf Coast states into the Carolinas. Similar weather activity was also expected in the southern tip of Florida.

Meanwhile, in the West, high pressure would keep triple-digit temperatures over areas from the deserts of southern California, Arizona and New Mexico eastward through the southern high Plains. Afternoon heat indexes above 100 degrees would continue, keeping parts of these regions under heat advisories and excessive heat warnings.

Meanwhile, southwestern monsoon moisture may kick up showers and thunderstorms over areas of the Southwest and the central and southern Rockies.

Finally, areas near the West Coast would begin seeing cooler temperatures this week as a low pressure trough dug down the coast.

Temperatures in the Lower 48 states Sunday ranged from a low of 36 degrees at Meacham, Ore., to a high of 125 degrees at Death Valley, Calif.

___

Online:

Weather Underground: http://www.wunderground.com/

National Weather Service:
http://iwin.nws.noaa.gov/

Intellicast:
http://www.intellicast.com/

[Associated Press article from Weather Underground]