Latest Wet Bulb Globe Temperature Observations

Severe Thunderstorms and Heavy Rain Across the Ohio Valley;

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

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Heat Index

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WBGT

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Normal

Regional Guidelines: Category 3 (Sunbelt / South)

WBGT Risk Chart (Regional Guidelines)

Flag	Cat 2 (Mid)	Cat 3 (South)
🟢 Low	< 79.8 °F	< 82.0 °F
🟡 Moderate	79.8 - 84.6 °F	82.0 - 86.9 °F
🟠 High	84.7 - 87.7 °F	87.0 - 89.9 °F
🔴 Extreme	87.8 - 89.7 °F	90.0 - 92.0 °F
⬛ Black Flag	> 89.7 °F	> 92.0 °F

Activity Modifications by Risk Level:

Low (Green): Normal activity. Minimum 3 rest breaks per hour (3+ mins each).
Moderate (Yellow): Use discretion. Watch at-risk individuals. Minimum 3 rest breaks per hour (4+ mins each).
High (Orange): Max 2 hrs total practice. Shorts & helmets/shoulder pads only for football. 4+ rest breaks/hr.
Red (Extreme): Max 1 hr practice. No protective equipment or conditioning drills. 20+ mins total rest.
Black Flag: Cancel or suspend all outdoor physical activities. Delay until WBGT drops.

Guidelines based on Korey Stringer Institute (KSI) & NATA Regional Heat Safety recommendations.