{"url_path":"/weather/alerts/2.49.0.1.840.0.48779a75aa9140d3bc6f838bfaf27106246237f5.006.1","section_key":"alert","section_title":"Winter Storm Warning issued May 18 at 12:46PM MDT until May 18 at 6:00PM MDT by NWS Riverton WY","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-05-18","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.48779a75aa9140d3bc6f838bfaf27106246237f5.006.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Riverton WY"},"word_count":149,"has_tables":false,"body_markdown":"# Winter Storm Warning: Winter Storm Warning issued May 18 at 12:46PM MDT until May 18 at 6:00PM MDT by NWS Riverton WY\n\n**Severity:** Severe\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Casper Mountain\n**Issued by:** NWS Riverton WY\n**Sent:** 2026-05-18T12:46:00-06:00\n**Effective:** 2026-05-18T12:46:00-06:00\n**Expires:** 2026-05-18T18:00:00-06:00\n\n## Description\n* WHAT...Heavy snow possible. Additional snow accumulations between\n3 and 6 inches possible. Winds could gust as high as 40 mph.\n\n* WHERE...Casper Mountain.\n\n* WHEN...Until 6 PM MDT this evening.\n\n* IMPACTS...Travel will be very difficult. Areas of blowing snow\ncould significantly reduce visibility. Heavy snow could break tree\nlimbs as many trees have leafed out.\n\n## Instructions\nIf you must travel, keep an extra flashlight, food, and water in\nyour vehicle in case of an emergency.\n\nFor graphical depictions of the snowfall forecast, including the\nofficial NWS forecast, high end amounts, and low end amounts, visit\nhttps://weather.gov/riw/winter .\n\nFor winter road conditions from the Wyoming Department of\nTransportation, visit https://wyoroad.info ."}