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Heat Advisory

◍ Clay · USA · updated 9/17/2026, 6:20:00 AM

⏱ In effect until 1:30 PM UTC-5

Severity score

65/100

Confidence

High

Why this matters

* WHAT...Heat index values up to 107. * WHERE...Portions of East Arkansas, North Mississippi, Southeast Missouri, and West Tennessee. * WHEN...Until 8 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Key stats

Severity

Moderate

Certainty

Likely

Urgency

Expected

Severity over time

Timeline

Heat Advisory
9/17/2026, 6:20:00 AM
Heat Advisory issued September 17 at 1:20AM CDT until September 19 at 8:00PM CDT by NWS Memphis TN

Sources & attribution

OfficialNWS NWS Memphis TNupdated 9/17/2026, 6:20:00 AM

OfficialNWS NWS Lincoln ILupdated 9/17/2026, 5:16:00 AM

OfficialNWS NWS Tulsa OKupdated 9/17/2026, 3:38:00 AM

⚠This is an informational severity score, not an official warning. Follow guidance from NWS/NOAA, FEMA (ready.gov), and local emergency management.