This Thursday marked the second straight day of intense north-northwest winds across South Central Nebraska, but overall a bit worse than the previous day, as most of the daylight hours featured relentless sustained speeds commonly 30-45 MPH and frequent gusts 50-60 MPH (with sporadic higher peak gusts up to 68 MPH). Although for the majority of the 24-county local domain these severe winds and associated areas of blowing dust were the most impactful stories of the day, within Gosper/Furnas counties a large and historic wildfire took center stage during the afternoon and evening, remaining in the regional news headlines for several days while being gradually contained. Fueled by a nasty combination of extreme dryness and the severe winds, this blaze (dubbed the Road 739 Fire) scorched approximately 35,000 acres along a nearly 22-mile long and mainly 2-4 mile wide swath, making it the largest wildfire in at least many decades within South Central Nebraska. According to the Nebraska Emergency Management Agency (NEMA), eight residences were destroyed in the fire, along with as many as 50 outbuildings/minor structures. No injuries were reported from the actual fire, but tragically two traffic accidents involving emergency personnel occurred during the immediate fire response, including one that fatally injured the Elwood volunteer fire chief (for additional details regarding the Road 739 Fire please refer to the associated event narrative). Getting back to the larger-scale wind event that affected the entirety of South Central Nebraska, the highest official peak gusts from local airport sensors included: 63 MPH at Grand Island, 62 MPH in Hastings and 61 MPH at Ord. Per unofficial mesonet stations scattered throughout the area, peak gusts featured: 68 MPH near Cozad, 66 MPH near Red Cloud and Fairfield, and 65 MPH near Phillips and Kearney. There were no known reports of significant wind damage, but the combination of strong gusts and ongoing drought conditions promoted fairly widespread areas of blowing dust, greatly reducing visibility in various locations at least briefly. One of the more notable dust plumes affected the Interstate 80 corridor near Gibbon during the late morning, with highway cameras and traffic flow maps confirming very poor visibility and slow-downs. Sustained speeds finally eased down below 30 MPH (and gusts below 45 MPH) on a consistent basis by around 9 p.m. CDT on the 7th, signaling the end of back-to-back days of higher-end winds (although moderately-windy conditions continued for several more days).
In the mid-upper levels, the main player in the intense winds continued to be a quasi-stationary and powerful/deep closed low churning over the Wisconsin area. At the surface, a nearly co-located intense low pressure center resided over WI during the day, although its central pressure slowly weakened from around 994 millbars to around 1000 millibars. Despite the gradual weakening of this primary surface low, if anything, conditions within the state of Nebraska were even more favorable for high winds than the preceding day. For one thing, the mid-day (18Z) west-to-east pressure gradient across the state was slightly stronger, registering around 17 millibars (ranging from 1011 millibars in far eastern NE to 1028 millibars in the western Panhandle). Furthermore, steep low-level lapse rates allowed efficient downward momentum transfer from aloft during the daylight hours, with wind speeds in the 850-700 millibar layer averaging 50-60 knots (roughly 5 KT higher than on the 6th). The high winds of April 6th-7th were only two of several notably-windy days during April 2022 across South Central Nebraska, as this ended up being the overall-windiest April since at least 1951 (per analysis of Grand Island airport data).