Texas Heat Wave Sparks Dangerous Conditions and Excessive Heat Warnings.

Texas and Louisiana are experiencing an oppressive and dangerous heat wave, with temperatures soaring into the 100s and 110s and little relief in sight. Excessive heat warnings and advisories are in effect, and tens of thousands of people remain without power. The heat is caused by a strong high-pressure system and unusual humidity. People are advised to stay hydrated, avoid the hottest hours of the day, and reschedule strenuous activities to early morning or evening.