From Harlingen, Texas: Dangerous heat index values are expected due to a mix of hot temperatures and high humidity. A heat advisory has been issued by the National Weather Service for certain counties. This advisory is in effect from noon until 6 p.m.

and affects Willacy and Cameron Counties. The heat index will reach extremely high levels, making the air feel very hot. For more specific information, including the exact heat index values, readers can consult the original report.

Further details about the heat advisory and its implications are available from the source, which provides more information about the affected areas and the expected conditions.