Omaha, Lincoln, and Norfolk all set maximum temperature records, with Omaha and Lincoln both breaking the previous record by 10° or more. Shenandoah and Sidney both recorded a maximum temperature of 75°, the highest temperature ever recorded in the month of December for Iowa. Temperatures soared in the afternoon with many locations observing temperatures in the 70s, which is approximately 40° above normal.
Falls City had a peak wind pre-storm wind of 62 mph around 2 pm. The event began with non-thunderstorm winds greater than 58 mph in southeast Nebraska and southwest Iowa. The event was determined to be a derecho meeting the criteria of wind damage extending more than 250 miles, including wind gusts of at least 58 mph and numerous gusts of at least 75 mph. The City of Omaha Public Works office estimates the damage to the city near $1.10M.ĭecemTornadoes, Derecho, Record Temperatures, Dust, Smoke, and Snow.Ī low pressure system brought strong (both thunderstorm, and non-thunderstorm) winds, tornadoes, dust, snow, and record temperatures into eastern Nebraska and western Iowa. Numerous pictures and reports from social media showed city streets turning into raging rivers. Flash flooding in the city washed through basement apartments, swept up cars, and heaved pavement in low-lying areas of the Omaha metro area. In some cases such as at Hanscom Park, 2 inches of rain was recorded in only 15 minutes. The worst damage occurred in Omaha where 2 to 3 inches of rain fell over about an hour. Flash flood warnings were issued across central Eastern Nebraska and into Pottawattamie County including Council Bluffs. Estimates from radar put rainfall totals between 1 and 5 inches. In the early evening hours, storms developed near Columbus and essentially followed the Platte River to the east and south. In addition to powerline damage, there was widespread tree damage across the city with the Elmwood Park area being hit particularly hard. A disaster declaration was made and early estimates indicated there was approximately $30 million in damage, mostly to electrical utilities. OPPD reported that 188,000 customers were without power across the metro area, the most ever, topping the JOmaha wind storm.
That tied the record for the strongest wind gust measured at the airport. The line of storms surged through the city of Omaha and produced a 96 mph wind gust at Eppley Airfield. The storm produced 70-80 mph winds to the north and west of Omaha. The discrete storm cells merged into a linear line ahead of a cold front and increased significantly in strength. The peak wind gust measured at the Norfolk Airport was 63 mph at 11:05 pm. Power was knocked out for Battle Creek, NE. That was the 9th coldest temperature ever observed in Nebraska.Ĭoldest Temperatures Recorded February 14-16 Locationĭiscrete storm cells developed late in the evening and first produced damaging winds in Pierce and Madison counties and downed numerous trees and power lines. A temperature of -42° was recorded at a COOP site near Fairbury.
A total 7 new temperature records were between the 3 climate sites. The temperature in Norfolk, Omaha, and Lincoln remained below 0° for 79, 63, and 61 hours respectively, the longest such streak since 1989. NCEP Real-Time Mesoscale Analysis (RTMA) estimated that all of eastern Nebraska and western Iowa remained below 0° for at least 48 hours, and many areas remained so for at least 72 hours. The entire area received plowable snow as NOHRSC analysis estimates 2-3 inches fell along the Nebraska/South Dakota border.įebruary 14-16, 2021 - Record Breaking Cold Air OutbreakĪ southern migration of the polar vortex resulted in numerous broken temperature records and the first time rolling blackouts had been enacted in Nebraska. Omaha and Lincoln both set new daily snowfall records as they both observed snow for at least 24 consecutive hours.
A large area of 10+ inches of snow was observed with a peak amount of 15.5 inches falling at Davey, NE in northern Lancaster county. January 24-26, 2021 - Heavy Snowfall Covers Most of the AreaĪ long duration snowfall event began in the late night hours of January 24 and ended on the morning of January 26. Below the events are climate records and other facts from the year. Here is a look back at some of the top weather events that occurred in eastern Nebraska and southwest Iowa in 2021.
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