{"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.ab0f1c3ca58a3548ed12ce15486f7b9a26ef45f4.001.1","type":"weather_alert","title":"Flash Flood Warning issued July 19 at 7:42PM EDT until July 19 at 9:45PM EDT by NWS Morristown TN","summary":"FFWMRX The National Weather Service in Morristown has issued a * Flash Flood Warning for... Northeastern Meigs County in east Tennessee... Northeastern Rhea County in east Tennessee... Southwestern Roane County in east Tennessee... * Until 945 PM EDT. * At 742 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indic…","significance":8,"detectedAt":"2026-07-20T00:32:55.006Z","effectiveDate":"2026-07-19T19:42:00-04:00","sourceUrl":"https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ab0f1c3ca58a3548ed12ce15486f7b9a26ef45f4.001.1","detail":{"event":"Flash Flood Warning","severity":"Severe","urgency":"Immediate","certainty":"Likely","area":"Meigs, TN; Rhea, TN; Roane, TN","expires":"2026-07-19T21:45:00-04:00","sender":"NWS Morristown TN"}},{"source":"weather-alerts","entityId":"nws:https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.77c694ecb2a135072629ba81ccb5e094ad9d859b.001.1","type":"weather_alert","title":"Flash Flood Warning issued July 19 at 6:49PM CDT until July 19 at 9:45PM CDT by NWS Midland/Odessa TX","summary":"FFWMAF The National Weather Service in Midland/Odessa has issued a * Flash Flood Warning for... Northwestern Brewster County in southwestern Texas... Southeastern Jeff Davis County in southwestern Texas... * Until 945 PM CDT. * At 649 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. The expected rainfall rate is 1 to 1.5 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, highways, streets and underpasse…","significance":8,"detectedAt":"2026-07-20T00:32:55.006Z","effectiveDate":"2026-07-19T18:49:00-05:00","sourceUrl":"https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.77c694ecb2a135072629ba81ccb5e094ad9d859b.001.1","detail":{"event":"Flash Flood Warning","severity":"Severe","urgency":"Immediate","certainty":"Likely","area":"Brewster, TX; Jeff Davis, TX","expires":"2026-07-19T21:45:00-05:00","sender":"NWS Midland/Odessa TX"}},{"source":"weather-alerts","entityId":"nws:https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.abb259aa750d5fa51489ad97b6770c06520251ff.001.1","type":"weather_alert","title":"Flood Warning issued July 19 at 6:50PM CDT until July 19 at 9:45PM CDT by NWS Louisville KY","summary":"* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Central Clinton County in south central Kentucky... East Central Cumberland County in south central Kentucky... Southwestern Russell County in south central Kentucky... * WHEN...Until 945 PM CDT. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 649 PM CDT, local law enforcement reported heavy rain and flooded roads in the warned area due to thunderstorms. Flooding is ongoing or expected to begin shortly. Between 1 and 2 inch…","significance":7,"detectedAt":"2026-07-20T00:32:55.006Z","effectiveDate":"2026-07-19T18:50:00-05:00","sourceUrl":"https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.abb259aa750d5fa51489ad97b6770c06520251ff.001.1","detail":{"event":"Flood Warning","severity":"Severe","urgency":"Expected","certainty":"Likely","area":"Clinton, KY; Cumberland, KY; Russell, KY","expires":"2026-07-19T21:45:00-05:00","sender":"NWS Louisville KY"}},{"source":"weather-alerts","entityId":"nws:https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ac97f7f7ccdfb5ef735733e31f577b6a86f7e932.001.1","type":"weather_alert","title":"Flash Flood Warning issued July 19 at 7:56PM EDT until July 19 at 9:15PM EDT by NWS Morristown TN","summary":"FFWMRX The National Weather Service in Morristown has extended the * Flash Flood Warning for... Eastern Lee County in southwestern Virginia... Southwestern Scott County in southwestern Virginia... * Until 915 PM EDT. * At 756 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Additional rainfall amounts up to 0.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Flooded roadways have been reported. IMPACT...…","significance":8,"detectedAt":"2026-07-20T00:32:55.006Z","effectiveDate":"2026-07-19T19:56:00-04:00","sourceUrl":"https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ac97f7f7ccdfb5ef735733e31f577b6a86f7e932.001.1","detail":{"event":"Flash Flood Warning","severity":"Severe","urgency":"Immediate","certainty":"Likely","area":"Lee, VA; Scott, VA","expires":"2026-07-19T21:15:00-04:00","sender":"NWS Morristown TN"}},{"source":"weather-alerts","entityId":"nws:https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.89d47cf9bd5eca23b7ba01de71e8e6913020cf1e.001.1","type":"weather_alert","title":"Flash Flood Warning issued July 19 at 6:57PM CDT until July 19 at 9:00PM CDT by NWS Nashville TN","summary":"FFWOHX The National Weather Service in Nashville has issued a * Flash Flood Warning for... South Central Cheatham County in middle Tennessee... Southwestern Davidson County in middle Tennessee... Northern Williamson County in middle Tennessee... * Until 900 PM CDT. * At 657 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2 inches of rain have fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE..…","significance":8,"detectedAt":"2026-07-20T00:32:55.006Z","effectiveDate":"2026-07-19T18:57:00-05:00","sourceUrl":"https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.89d47cf9bd5eca23b7ba01de71e8e6913020cf1e.001.1","detail":{"event":"Flash Flood Warning","severity":"Severe","urgency":"Immediate","certainty":"Likely","area":"Cheatham, TN; Davidson, TN; Williamson, TN","expires":"2026-07-19T21:00:00-05:00","sender":"NWS Nashville TN"}}]}