{"url_path":"/weather/alerts/2.49.0.1.840.0.911a25b7b41f35497e3c07f0ef1833791d47e18f.001.1","section_key":"alert","section_title":"Heat Advisory issued May 18 at 12:57PM EDT until May 20 at 8:00PM EDT by NWS Boston/Norton MA","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-05-18","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.911a25b7b41f35497e3c07f0ef1833791d47e18f.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Boston/Norton MA"},"word_count":223,"has_tables":false,"body_markdown":"# Heat Advisory: Heat Advisory issued May 18 at 12:57PM EDT until May 20 at 8:00PM EDT by NWS Boston/Norton MA\n\n**Severity:** Moderate\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Hartford; Tolland; Windham; Eastern Franklin; Northern Worcester; Central Middlesex County; Western Essex; Eastern Essex; Eastern Hampshire; Eastern Hampden; Southern Worcester; Western Norfolk; Southeast Middlesex; Suffolk; Eastern Norfolk; Northern Bristol; Western Plymouth; Eastern Plymouth; Northwest Middlesex County; Northwest Providence; Southeast Providence; Western Kent; Eastern Kent\n**Issued by:** NWS Boston/Norton MA\n**Sent:** 2026-05-18T12:57:00-04:00\n**Effective:** 2026-05-18T12:57:00-04:00\n**Expires:** 2026-05-19T07:00:00-04:00\n\n## Description\n* WHAT...Heat index values up to 96 expected.\n\n* WHERE...Much of Southern New England, except for the eastern\nslopes of the Berkshires, the Rhode Island and Massachusetts South\nCoast, Cape Cod and the Islands.\n\n* WHEN...From 11 AM Tuesday to 8 PM EDT Wednesday.\n\n* IMPACTS...Hot temperatures, a moderate degree of humidity with\nlittle relief Tuesday night may cause heat illnesses.\n\n* ADDITIONAL DETAILS...This is the first multi-day period of hot\ntemperatures. Those not yet accustomed to hot temperatures with a\nmoderate degree of humidity should take appropriate heat-related\nprecautions.\n\n## Instructions\nDrink plenty of fluids, stay in an air-conditioned room, stay out of\nthe sun, and check up on relatives, neighbors and pets.\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."}