FirstAlerts
Severe Weather

National Weather Service Extends Heat Alert Window Across the Carolinas

An Extreme Heat Watch and Warning window now runs longer than first issued, through 8 PM EDT on August 18, 2026.

4 reports on this incident · first at Aug 17, 2026, 3:00 a.m. ET

By AI ReporterWritten Aug 17, 2026, 4:34 a.m. ET
The has extended the timing for severe heat conditions across portions of southeast North Carolina and northeast South Carolina, pushing the end time back so the alert runs longer than first issued. Under official records from the agency, an Extreme Heat Warning and are set from 11 AM EDT to 8 PM EDT on August 18, 2026. Dangerously hot conditions with heat index values up to 114 are expected under the warning and possible under the . The alert covers zones, including Bladen, Columbus, Inland Pender, Coastal Pender, Inland New Hanover, Coastal New Hanover, Inland Brunswick, Coastal Brunswick, Florence, Marion, Williamsburg, Coastal Horry, Inland Georgetown, Coastal Georgetown, Central Horry, and Northern Horry. Cities in the affected region include Wilmington, Myrtle Beach, Florence, and Loris. Official weather advisory records note that heat-related illnesses increase significantly during extreme heat and high humidity events. Precautions advised by the agency include drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors.

Earlier reports

  1. Aug 17, 2026, 4:25 a.m. ET

    National Weather Service Issues Extreme Heat Watch for Parts of the Carolinas

    An Extreme Heat Watch has been issued for portions of southeast North Carolina and northeast South Carolina for Tuesday, August 18, 2026, running from 11 AM to 8 PM EDT, according to official records from the National Weather Service Wilmington NC. Under the watch, dangerously hot conditions with heat index values up to 114 are possible. The record describes the watch period as Tuesday morning through Tuesday evening.

    The watch encompasses 16 zones: Bladen, Columbus, Inland Pender, Coastal Pender, Inland New Hanover, Coastal New Hanover, Inland Brunswick, Coastal Brunswick, Florence, Marion, Williamsburg, Coastal Horry, Inland Georgetown, Coastal Georgetown, Central Horry, and Northern Horry. Listed cities include Loris, Lake Waccamaw, Socastee, Wilmington, Myrtle Grove, Red Hill, Oak Island, Tabor City, Bladenboro, Burgaw, Leland, Whiteville, Garden City, Andrews, Mullins, Florence, Kingstree, North Myrtle Beach, Myrtle Beach, Murrells Inlet, Carolina Beach, Chadbourn, Marion, Boiling Spring Lakes, and Little River.

    Official records warn that heat related illnesses increase significantly during extreme heat and high humidity events.

    Recommended precautions include drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking up on relatives and neighbors.

  2. Aug 17, 2026, 3:22 a.m. ET

    NWS Warns Heat-Related Illnesses Increase Significantly Amid Extreme Heat

    Heat related illnesses increase significantly during extreme heat and high humidity events, according to official records from the National Weather Service Wilmington NC.

    The update comes as an Extreme Heat Watch covers portions of southeast North Carolina and northeast South Carolina across 16 zones, including cities such as Wilmington, Myrtle Beach, and Florence. Dangerously hot conditions with heat index values up to 114 are possible. The watch window begins at 11:00 AM EDT on August 18, 2026, and expires at 8:00 PM EDT that evening.

    Official records recommend that people drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

  3. Aug 17, 2026, 3:00 a.m. ETFirst report

    Extreme Heat Watch Issued for Southeast North Carolina and Northeast South Carolina

    An Extreme Heat Watch has been issued for portions of southeast North Carolina and northeast South Carolina on August 18, 2026, according to official records from the National Weather Service Wilmington NC. The developing situation remains open.

    The watch window begins at 11:00 AM EDT on August 18, 2026, and expires at 8:00 PM EDT on August 18, 2026. Official records state that dangerously hot conditions with heat index values up to 114 are possible across 16 zones, including Bladen, Columbus, Florence, Marion, Williamsburg, and inland and coastal sections of Pender, New Hanover, Brunswick, Horry, and Georgetown.

    According to official records, heat-related illnesses increase significantly during extreme heat and high humidity events. Recommended precautions include drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking up on relatives and neighbors.

Was this report accurate and useful?

Sources

Revision history

  1. Version 117 Aug 2026, 08:34current

    First published.

  2. Version 117 Aug 2026, 07:22current

    First published.

  3. Version 117 Aug 2026, 07:00current

    First published.

  4. Version 117 Aug 2026, 08:25current

    First published.

How we work

This site models an investigative reporter rather than a wire desk. The aim is the most complete, accurate and timely account we can assemble — all three, not a trade between them. Reports go out within minutes of the coverage they are built from, carrying context a newsroom would otherwise need a day and a records request to gather: what has happened at this place before, what the operator’s record is, which aircraft it actually was.

Reports are built from primary sources — accident and court records, official registries, weather observations, agency statements — and from reputable news organisations, each named where their reporting is used. Facts are extracted before anything is written, and every one must be supported by a quotation found in the source itself; the model that writes the report is given only those verified facts and never sees the article, so it cannot introduce a detail no source stated.

Where sources disagree we publish the disagreement, attributed, rather than picking a figure. Where a fact comes from a record rather than a reporter, we say so, and the language matches: an instrument reading is never described as something anyone confirmed. Some things are deliberately withheld — a suspect is not named until an agency names them on the record, victims until families or officials release them — and corrections appear as visible revisions, never as silent edits.

None of that makes a report true. A quotation check proves a source said something, not that it was right, and an automated system can be confidently wrong in ways the checks do not catch. If something here is wrong, the feedback above is how it gets found. The full methodology, including what we refuse to publish.