{"source":"weather-alerts","note":"Free 5-item preview. The full feed is $0.05/call at GET /v1/weather-alerts/changes.","question":"Which severe or extreme US weather alerts are active as of T, where, and how urgent?","sample":[{"source":"weather-alerts","entityId":"nws:https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.771c780309d4c2cc33c5a8de63bafb468536930d.001.1","type":"weather_alert","title":"Extreme Heat Warning issued July 14 at 12:57AM MDT until July 14 at 9:00PM MDT by NWS Riverton WY","summary":"* WHAT...Dangerously hot conditions with temperatures from 100 to 105 degrees below 6,000 feet and 90 to 100 degrees between 6,000 and 7,000 feet each day. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.","significance":7,"detectedAt":"2026-07-14T22:21:46.857Z","effectiveDate":"2026-07-14T00:57:00-06:00","sourceUrl":"https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.771c780309d4c2cc33c5a8de63bafb468536930d.001.1","detail":{"event":"Extreme Heat Warning","severity":"Severe","urgency":"Expected","certainty":"Likely","area":"Cody Foothills; North Bighorn Basin; Southwest Bighorn Basin; Southeast Bighorn Basin; Northeast Johnson County; Southeast Johnson County; Jackson Hole; Upper Wind River Basin; Wind River Basin; Lander Foothills; Green Mountains and Rattlesnake Range; Natrona County Lower Elevations; Star Valley; Upper Green River Basin Foothills; Upper Green River Basin; South Lincoln County; Rock Springs and Green River; Flaming Gorge; East Sweetwater County","expires":"2026-07-14T21:00:00-06:00","sender":"NWS Riverton WY"}},{"source":"weather-alerts","entityId":"nws:https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f24e57ff25a63f2bb99992ea29ee07c6e45c64a0.001.1","type":"weather_alert","title":"Flood Watch issued July 14 at 12:29AM PDT until July 14 at 11:00PM PDT by NWS Elko NV","summary":"Monsoonal moisture continues to stream northward into central and northern Nevada with anomalously high atmospheric moisture content for this time of year. This will promote heavy rainfall rates and runoff potential in stronger showers and thunderstorms this afternoon and evening. * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of eastern, north central, northeast, and south central Nevada, including the following areas, in eastern Nevada, White Pine. In north central Nevada, Northern Lander and Northern Eureka and Southern Lander and Southern…","significance":7,"detectedAt":"2026-07-14T22:21:46.857Z","effectiveDate":"2026-07-14T00:29:00-07:00","sourceUrl":"https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f24e57ff25a63f2bb99992ea29ee07c6e45c64a0.001.1","detail":{"event":"Flood Watch","severity":"Severe","urgency":"Future","certainty":"Possible","area":"Northern Elko County; Southeastern Elko County; Ruby Mountains and East Humboldt Range; White Pine County; Northern Lander County and Northern Eureka County; Southern Lander County and Southern Eureka County; Southwest Elko County; South Central Elko County; Northwestern Nye County; Northeastern Nye County","expires":"2026-07-14T13:00:00-07:00","sender":"NWS Elko NV"}},{"source":"weather-alerts","entityId":"nws:https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0f7643de27be3098b54f3e18efeb5af138c63922.001.1","type":"weather_alert","title":"Red Flag Warning issued July 14 at 2:33AM CDT until July 14 at 9:00PM CDT by NWS Duluth MN","summary":"* WHEN...Tuesday afternoon and evening. * AFFECTED AREA...In Minnesota, Koochiching, North St. Louis and Northern Cook and Lake. * WINDS...Northwest 5 to 10 mph with gusts up to 20 mph. * RELATIVE HUMIDITY...As low as 20 percent. * TEMPERATURES...Up to 94. * IMPACTS...The rapid spread of any fires may occur due to the forecast weather conditions and dry fuels per guidance from local land management agencies.","significance":7,"detectedAt":"2026-07-14T22:21:46.857Z","effectiveDate":"2026-07-14T02:33:00-05:00","sourceUrl":"https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0f7643de27be3098b54f3e18efeb5af138c63922.001.1","detail":{"event":"Red Flag Warning","severity":"Severe","urgency":"Expected","certainty":"Likely","area":"Koochiching; North St. Louis; Northern Cook/Northern Lake","expires":"2026-07-14T14:45:00-05:00","sender":"NWS Duluth MN"}},{"source":"weather-alerts","entityId":"nws:https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.42ed64e66363f291d293ff8c6fdbe7cda6da54b2.001.1","type":"weather_alert","title":"Extreme Heat Warning issued July 14 at 2:34AM CDT until July 14 at 9:00PM CDT by NWS Duluth MN","summary":"* WHAT...Dangerously hot conditions with heat index values up to 100. * WHERE...Koochiching, Itasca, Central and North St. Louis, Cook and Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation and the Bois Forte Band, Deer Creek, Nett Lake and, Lake Vermilion areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.","significance":7,"detectedAt":"2026-07-14T22:21:46.857Z","effectiveDate":"2026-07-14T02:34:00-05:00","sourceUrl":"https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.42ed64e66363f291d293ff8c6fdbe7cda6da54b2.001.1","detail":{"event":"Extreme Heat Warning","severity":"Severe","urgency":"Expected","certainty":"Likely","area":"Koochiching; North St. Louis; Northern Cook/Northern Lake; North Itasca; Central St. Louis; Southern Lake/North Shore; Southern Cook/North Shore; South Itasca","expires":"2026-07-14T14:45:00-05:00","sender":"NWS Duluth MN"}},{"source":"weather-alerts","entityId":"nws:https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.42ed64e66363f291d293ff8c6fdbe7cda6da54b2.002.1","type":"weather_alert","title":"Extreme Heat Warning issued July 14 at 2:34AM CDT until July 14 at 9:00PM CDT by NWS Duluth MN","summary":"* WHAT...Dangerously hot conditions with heat index values up to 101. * WHERE...In Minnesota, Crow Wing, Aitkin, Pine, Cass, and Carlton and South St. Louis Counties. In Wisconsin, Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer, and Washburn Counties. This includes the Tribal Lands of the Fond du Lac Band, the Lac Courte Oreilles Reservation, the St. Croix Band in Burnett County, the northwestern area of the Lac du Flambeau Band, the Bad River Reservation, the Red Cliff Band and the Mille Lacs Band, Big Sandy Lake, Hinckley, Lena Lake and, East Lake areas. Other locations including Madelin…","significance":7,"detectedAt":"2026-07-14T22:21:46.857Z","effectiveDate":"2026-07-14T02:34:00-05:00","sourceUrl":"https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.42ed64e66363f291d293ff8c6fdbe7cda6da54b2.002.1","detail":{"event":"Extreme Heat Warning","severity":"Severe","urgency":"Expected","certainty":"Likely","area":"North Cass; South Cass; Crow Wing; Northern Aitkin; South Aitkin; Carlton/South St. Louis; Pine; Douglas; Bayfield; Ashland; Iron; Burnett; Washburn; Sawyer","expires":"2026-07-14T14:45:00-05:00","sender":"NWS Duluth MN"}}]}