{"url_path":"/weather/alerts/2.49.0.1.840.0.a97dea2c67ca1b68b1becf5608ef57f80fa5b415.001.1","section_key":"alert","section_title":"Flash Flood Warning issued July 21 at 6:47PM EDT until July 21 at 10:00PM EDT by NWS Baltimore MD/Washington DC","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-07-21","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a97dea2c67ca1b68b1becf5608ef57f80fa5b415.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Baltimore MD/Washington DC"},"word_count":187,"has_tables":false,"body_markdown":"# Flash Flood Warning: Flash Flood Warning issued July 21 at 6:47PM EDT until July 21 at 10:00PM EDT by NWS Baltimore MD/Washington DC\n\n**Severity:** Severe\n**Certainty:** Likely\n**Urgency:** Immediate\n**Areas:** Howard, MD; Montgomery, MD\n**Issued by:** NWS Baltimore MD/Washington DC\n**Sent:** 2026-07-21T18:47:00-04:00\n**Effective:** 2026-07-21T18:47:00-04:00\n**Expires:** 2026-07-21T22:00:00-04:00\n\n## Description\nFFWLWX\n\nThe National Weather Service in Sterling Virginia has issued a\n\n* Flash Flood Warning for...\nCentral Howard County in central Maryland...\nNortheastern Montgomery County in central Maryland...\n\n* Until 1000 PM EDT.\n\n* At 647 PM EDT, Doppler radar indicated thunderstorms producing\nheavy rain across the warned area. Between 2 and 3 inches of rain\nhave fallen. Additional rainfall amounts of 1 to 2 inches are\npossible in the warned area. Flash flooding is ongoing or expected\nto begin shortly.\n\nHAZARD...Flash flooding caused by thunderstorms.\n\nSOURCE...Radar.\n\nIMPACT...Flash flooding of small creeks and streams, urban\nareas, highways, streets and underpasses as well as\nother poor drainage and low-lying areas.\n\n* Some locations that will experience flash flooding include...\nColumbia...                        Germantown...\nOlney...                           Damascus...\nMontgomery Village...              Clarksburg...\nHighland...                        Laytonsville...\nRoxbury Mills...                   Dayton...\nGlenelg...                         Clarksville...\n\n## Instructions\nTurn around, don't drown when encountering flooded roads. Most flood\ndeaths occur in vehicles."}