US South Facing Above Average , Triple-Digit Temperatures .<br />NBC reports that parts of the southern United States <br />have been enduring a days-long heat event, with <br />temperatures surpassing 100 degrees Fahrenheit.<br />High temperatures, combined with <br />increased humidity, have caused the heat <br />index to feel more like 110 to 120 degrees.<br />On June 19, Houston, Texas registered <br />its first 100-degree day of the year about <br />one month earlier than the average. .<br />On June 20, heat advisories remained in effect <br />for 32 million people across parts of Texas, <br />Oklahoma, Louisiana and New Mexico.<br />On June 20, heat advisories remained in effect <br />for 32 million people across parts of Texas, <br />Oklahoma, Louisiana and New Mexico.<br />NBC reports that some areas <br />are forecast to experience a heat <br />index in excess of 120 degrees.<br />According to the Weather Prediction Center, , “just under 30 million people will experience at least <br />3 hours of a Heat Index of at least 105 degrees.”.<br />Areas included in the advisory include<br />the large metro areas of Austin, Dallas, <br />Oklahoma City and San Antonio.<br />Areas included in the advisory include<br />the large metro areas of Austin, Dallas, <br />Oklahoma City and San Antonio.<br />June 20 is expected to be the hottest day of the week <br />for many in the region, with temperatures expected to be <br />10 to 15 degrees above the average for this time of year.<br />NBC reports that ongoing highs <br />have been forecast to <br />surpass the century mark.<br />This is likely to cause cities like Abilene, <br />Austin, Houston and Corpus Christi to hit <br />daily record high temperatures later this week.
