A Heat Warning is in effect between which hours?

A Heat Warning is in effect between which hours?

• A. Between 1000 and 1800.
• B. Between 1200 and 2000.
• C. Between 1300 and 1900.
• D. Between 1400 and 2100.

Answer: (C)

Heat warnings target the hottest part of the day when temperatures are highest and safety risks for crews and equipment are greatest. This typically occurs in the afternoon into the early evening. The window from 1300 to 1900 local time captures that peak heat period, when heat-related fatigue, rail expansion, and other conditions pose the most risk, so it’s the period during which heightened precautions are needed. Other time windows either start too early or extend beyond the hottest part of the day, making them less aligned with when the risk is at its peak. That’s why 1300 to 1900 is the best fit.

Heat warnings target the hottest part of the day when temperatures are highest and safety risks for crews and equipment are greatest. This typically occurs in the afternoon into the early evening. The window from 1300 to 1900 local time captures that peak heat period, when heat-related fatigue, rail expansion, and other conditions pose the most risk, so it’s the period during which heightened precautions are needed. Other time windows either start too early or extend beyond the hottest part of the day, making them less aligned with when the risk is at its peak. That’s why 1300 to 1900 is the best fit.