A bright overnight \u201cstorm\u201d on radar isn\u2019t rain\u2014it\u2019s more than a billion migrating birds<\/b> moving across the U.S. on September 26\u201328, 2025<\/b>. If you leave exterior lights on, you raise collision risks at your home; turning them off brings an immediate safety payoff.<\/p>\nBirdCast flags a record 1.2 billion flyers on Sep 26, and it\u2019s still building<\/h2>\n
Weather radars (NEXRAD) detect birds as large, moving \u201cblooms,\u201d not precipitation. BirdCast reported a record-breaking 1.2 billion birds aloft on September 26, 2025<\/b>, and forecasts show continued heavy flights through the weekend. Expect the strongest pulses 2\u20134 hours after sunset<\/b>, then tapering toward dawn.<\/p>\nWhy homeowners breathe easier while downtown building managers face the risk<\/h2>\n
High-rise and commercial glass concentrate light and reflections, pulling birds into dangerous corridors; single-family homes can mitigate quickly with switches and shades.<\/p>\n
\u201cTurning off lights dramatically reduces hazards for migrating birds,\u201d \u2014 BirdCast, Cornell Lab of Ornithology.<\/p><\/blockquote>\n
Kill the glow now with these steps before sunset Sep 28<\/h2>\n
Cutting light tonight protects birds and trims your bill. Focus on non-essential exterior lighting from 11 p.m. to 6 a.m.<\/b>, and block indoor glow visible from windows. Use timers so you don\u2019t forget.<\/p>\n
\n\n
\n Step<\/th>\n Detail<\/th>\n Deadline<\/th>\n<\/tr>\n \n 1<\/td>\n Switch off decorative, lobby, and landscape lights<\/td>\n Before sunset Sep 28<\/td>\n<\/tr>\n \n 2<\/td>\n Close blinds\/curtains on upper floors facing open sky<\/td>\n Before 10 p.m. Sep 28<\/td>\n<\/tr>\n \n 3<\/td>\n Set timers\/motion sensors for security lighting only<\/td>\n Tonight 11 p.m.\u20136 a.m.<\/td>\n<\/tr>\n \n 4<\/td>\n Mark problem windows with visible patterns (2 in spacing)<\/td>\n Within 7 days<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n https:\/\/twitter.com\/IWeatherON\/status\/1971602528740528131<\/p>\n
Signals to watch in the next 60 days as migration peaks through Nov 30<\/h2>\n
Watch for BirdCast \u201cHigh\u201d or \u201cVery High\u201d alerts, bright regional radar blooms after sunset<\/b>, and nights with clear skies and north winds\u2014classic triggers for big flights. Expect multiple high-traffic pulses in the next 30\u201360 days<\/b> as fall migration continues toward Nov 30<\/b>.<\/p>\n
Are window strikes at your building dropping below 1 per week after Oct 1?<\/h2>\n
Track a simple metric: logged window-collision reports at your address. If your lights-out routine works, you should see collisions trend toward zero<\/b> after October 1<\/b>. If not, expand window markings and reduce internal night lighting visible outdoors\u2014especially above the second floor.<\/p>\n
SOURCES<\/b><\/p>\n
\n
- https:\/\/www.birds.cornell.edu\/home\/record-breaking-night-of-bird-migration\/<\/li>\n
- https:\/\/www.audubon.org\/our-work\/cities-and-towns\/lights-out<\/li>\n
- https:\/\/www.weather.gov\/mkx\/using-radar<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":18,"featured_media":9882,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"schema_org_data":"","_extracted_celebrities":"","_extracted_movies":"","_extracted_places":"","_extracted_videos":"","_last_enrichment_date":"","footnotes":""},"categories":[12],"tags":[],"class_list":["post-9837","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33"],"yoast_head":"\n
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