{"id":65563,"date":"2025-06-26T12:59:00","date_gmt":"2025-06-26T12:59:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=65563"},"modified":"2025-06-27T16:21:52","modified_gmt":"2025-06-27T16:21:52","slug":"heavy-rainfall-causes-flooding-in-grand-island-nebraska","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/65563","title":{"rendered":"Heavy rainfall causes flooding in Grand Island, Nebraska"},"content":{"rendered":"
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1-minute GOES-19 Infrared images centered at Grand Island, Nebraska (KGRI) with an overlay of Total Precipitable Water, GLM Flash Points and 1-hour Precipitation, from 0001-1100 UTC on 26 June [click to play MP4 animation]<\/p><\/div>\n

Grand Island, Nebraska received 6.41″ of rainfall during the calendar day on 25 June 2025 — which set a new record for the date and for any single day during the month of June. 1-minute Mesoscale Domain Sector<\/strong><\/a> GOES-19 (GOES-East)<\/em> Infrared images centered at Grand Island (above)<\/strong><\/em> included an overlay of the Total Precipitable Water<\/strong><\/a> derived product, GLM<\/strong><\/a> Flash Points and 1-hour Precipitation during the 11-hour period\u00a0 from 0001-1100 UTC on 26 June (which was a period during which a large portion of the 25 June record rainfall occurred — with rainfall rates as high as 1.22 inches per hour<\/strong><\/a>).<\/p>\n

The same set of GOES-19 imagery that also includes Flood Watch\/Warning\/Advisory polygons is shown below. Note the appearance of the bold red Flash Flood Emergency for Grand Island area, beginning at 0445 UTC (image<\/strong><\/a> | text<\/strong><\/a>).<\/p>\n

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1-minute GOES-19 Infrared images centered at Grand Island, Nebraska (KGRI) with an overlay of Total Precipitable Water, GLM Flash Points, 1-hour Precipitation and Flood Watch\/Warning\/Advisory polygons, from 0001-1100 UTC on 26 June [click to play MP4 animation]<\/p><\/div>\n

The GOES-19 imagery at 1100 UTC (below)<\/strong><\/em> included plots of 24-hour precipitation — which displayed 7.13 inches at Grand Island (ending at 1200 UTC on 26 June).<\/p>\n

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GOES-19 Infrared image with overlay of Total Precipitable Water and GLM Flash Points at 1100 UTC on 26 June — with 24-hour Precipitation (inches, ending at 1200 UTC) plotted in yellow [click to enlarge]<\/p><\/div>\n

Prior to the onset of this period of heavy rain, the GOES-19 Total Precipitable Water value in the vicinity of Grand Island was as high as 1.74 inches (below)<\/em><\/strong>.<\/p>\n

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Cursor sample of GOES-19 Total Precipitable Water derived product just northeast of Grand Island (KGRI) at 0003 UTC on 26 June [click to enlarge]<\/p><\/div>\n

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Wow! The grand total for Grand Island for June 25th is going in the record books at 6.41". Along with breaking the record for June 25th AND the single day record for ANY day in June…it was 0.09" away from tying the all-time single day record for the entire year! ?<\/p>— NWS Hastings (@NWSHastings) June 26, 2025<\/a><\/blockquote>