{"url_path":"/weather/alerts/2.49.0.1.840.0.f660b760797008cbbaaeda895bb1df8b3382bca5.001.1","section_key":"alert","section_title":"Heat Advisory issued July 22 at 11:56AM PDT until July 22 at 11:00PM PDT by NWS Portland OR","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-22","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f660b760797008cbbaaeda895bb1df8b3382bca5.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Portland OR"},"word_count":370,"has_tables":false,"body_markdown":"# Heat Advisory: Heat Advisory issued July 22 at 11:56AM PDT until July 22 at 11:00PM PDT by NWS Portland OR\n\n**Severity:** Moderate\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Lower Columbia River; Tualatin Valley; West Hills and Chehalem Mountains; Inner Portland Metro; East Portland Metro; Outer Southeast Portland Metro; West Central Willamette Valley; East Central Willamette Valley; West Columbia River Gorge I-84 Corridor; Upper Hood River Valley; Central Columbia River Gorge I-84 Corridor; Cowlitz County Lowlands; North Clark County Lowlands; Inner Vancouver Metro; East Clark County Lowlands; South Washington Cascade Foothills; West Columbia River Gorge - SR 14; Central Columbia River Gorge - SR 14\n**Issued by:** NWS Portland OR\n**Sent:** 2026-07-22T11:56:00-07:00\n**Effective:** 2026-07-22T11:56:00-07:00\n**Expires:** 2026-07-22T23:00:00-07:00\n\n## Description\n* WHAT...Temperatures as high as 95 to 100 degrees.\n\n* WHERE...Greater Portland/Vancouver Metro, Western and Central\nColumbia River Gorge and the Hood River Valley, Lower Columbia\nRiver and Cowlitz River Valleys, Central Willamette Valley, and\nSouth Washington Cascade Foothills.\n\n* WHEN...Until 11 PM PDT this evening.\n\n* IMPACTS...Hot temperatures may cause heat illnesses.\n\n* ADDITIONAL DETAILS...Smoke from fires outside of the region or\nclouds moving into the\narea could result in cooler daytime high temperatures than currently\nforecast. There is around a 15-25% chance of thunderstorms on\nWednesday afternoon which may increase cloud cover and thus cause\ntemperatures to be slightly lower than forecast.\n\n## Instructions\nDrink plenty of fluids, stay in a cool place during the heat of the\nday, stay out of the sunshine, and check up on relatives and\nneighbors. For those without air conditioning, use fans to keep air\nmoving. Keeps windows closed during the day and open at night,\nunless air quality is degraded due to wildfire smoke.\n\nTake extra precautions when outside. Wear lightweight and loose\nfitting clothing. Try to limit strenuous activities to early morning\nor evening. Take action when you see symptoms of heat exhaustion and\nheat stroke.\n\nTo reduce risk during outdoor work, the Occupational Safety and\nHealth Administration recommends scheduling frequent rest breaks in\nshaded or air conditioned environments. Anyone overcome by heat\nshould be moved to a cool and shaded location. Heat stroke is an\nemergency! Call 9 1 1.\n\nDo not leave young children and pets in unattended vehicles. Car\ninteriors will reach lethal temperatures in a matter of minutes."}