{"url_path":"/weather/alerts/2.49.0.1.840.0.48779a75aa9140d3bc6f838bfaf27106246237f5.005.1","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%3A2.49.0.1.840.0.48779a75aa9140d3bc6f838bfaf27106246237f5.005.1","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":170,"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:** Natrona County Lower Elevations\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 expected. Total snow accumulations between 1 and\n3 inches. Areas of higher amounts up to 4 inches between Hiland\nand Casper and for the south side of Casper. Winds gusting as high\nas 40 mph.\n\n* WHERE...Natrona County Lower Elevations.\n\n* WHEN...Until 6 PM MDT this evening.\n\n* IMPACTS...Travel will be difficult, especially along US Highway\n20/26 between Hiland and Casper. Heavy snow could break tree limbs\nas 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 ."}