UPDATE: Prepare for heat index values up to 107 degrees until 9 p.m.

The NWS Fort Worth TX issued an update to the current excessive heat warning Friday at 1:59 p.m. valid until 9 p.m. The warning is for Erath, Hood, Somervell, Johnson, Ellis, Comanche, Mills, Hamilton, Bosque, Hill, Navarro, Freestone, Lampasas, Coryell, Bell, McLennan, Falls, Limestone, Leon, Milam and Robertson counties.

"Temperatures near 104 degrees and heat index values up to 107 degrees close to portions of North Central, Northeast and South Central Texas until 9 p.m. this evening," according to the NWS. "Hot temperatures and high humidity will increase the risk for heat-related illnesses to occur, particularly for those working or participating in outdoor activities."

This warning is in effect until 9 p.m.

NWS Heat Wave Safety Advice: Protect yourself with these recommendations

• Consume plenty of fluids to stay hydrated.

• Stay in an air-conditioned room.

• Avoid direct sun exposure: Protect yourself and check on vulnerable relatives and neighbors.

• Ensure child and pet safety: Do not leave young children and pets unattended in vehicles when car interiors can reach lethal temperatures in a matter of minutes.

• Be cautious outdoors: Take extra precautions if you work or spend time outside.

• Optimal Timing: When possible, reschedule strenuous activities to early morning or evening.

• Recognize early indicators: Learn to identify the warning signs of heat exhaustion and heat stroke.

• Stay cool with clothing: Wear lightweight and loose-fitting clothing.

For a safer outdoor work environment, follow the Occupational Safety and Health Administration (OSHA)'s guidance by scheduling regular rest breaks in shaded or air-conditioned places. If anyone shows signs of heat illness, promptly move them to a cool, shaded area. In an emergency, call 911.

Source: The National Weather Service

This story was originally published September 6, 2023 at 2:20 PM.