A major shift in the weather pattern will drive cooler air southward across the Plains and into Texas through this weekend.
After a long, hot summer in much of Texas and the southern Plains, any relief from the 100-degree readings will be more than welcome.
Cooler, less humid air will travel thousands of miles to the south from Canada during the second half of this week, reaching Oklahoma before the week comes to an end.
The air will push southward across much of Texas over the weekend.
High temperatures are forecast to be 15 to 25 degrees lower in the wake of the front. In Dallas and San Angelo, highs are forecast to be in the 80s both days of the weekend. By Sunday, the more comfortable air will reach into San Antonio, Houston and El Paso.
It is possible that temperatures and humidity levels will be shaved as far south as South Texas and part of northern Mexico by early next week.
Ahead of the front through the end of the week, the heat will continue over the region.
As the front pushes southward, there is the potential for a severe weather outbreak over portions of the South Central states spanning into Saturday.
The pattern change will bring additional rounds of showers and thunderstorms to portions of the Ohio Valley, South and East this weekend.
A dip in steering currents will drive the cool air across the Plains and could work to draw Leslie northward into Atlantic Canada next week.
Ahead of an approaching storm system, unseasonable warmth will overspread much of the United Kingdom on Sunday and Monday.
With no exact details on where Malaysia Airlines Flight 370 went missing, Indian Ocean currents may have swept one piece of the complicated puzzle to shores on Reunion Island.
The stream of moisture into the Southwest is drying out some, so this weekend may not be as wet as the previous few days.
Life-threatening heavy rainfall will continue to focus on northeastern India, Bangladesh and western Myanmar into Monday before a drier weather pattern sets in.
Heat and humidity remained in control over the much of the country during the last week of July.
The air felt like an exceptional 163 F in Bandar Mahshahr, Iran, on Friday and similar or worse conditions will follow.
Scituate, MA (1769)
Hail fell 12" deep and remained on the ground for 30 hours.
Cherrapunji, India (1861)
A total of 366.14" of rain fell during July (world record for 1 month). Cherrapunji also holds world record rainfall for a 12-month period: 1,041.78" from August 1, 1860 to July 31, 1861.
Baker, FL (1949)
(East of Crestview, FL) Lightning struck a baseball diamond, digging a ditch 20 feet long in the infield, killing the shortstop, third baseman and injuring 50 people in a crowd of 300.