The strongest tornado was a low-end EF4 tornado that swept away homes on the west side of Keota, Iowa. One of these tornadoes was a high-end EF3 tornado that passed through the northern Little Rock metro, causing extensive damage and dozens of casualties. EF3 tornadoes in Arkansas, Tennessee, and Illinois prompted the issuance of tornado emergencies and multiple mass casualty incidents were declared for some of the hardest hit areas. Louis, Chicago, and Memphis metropolitan areas, all of which were hit by multiple rounds of severe squall lines and supercell thunderstorms that produced damaging winds, large hail, and tornadoes. Approximately 28 million people were placed under tornado watches, including multiple PDS tornado watches, from the evening of March 31 through the overnight hours into the morning of April 1. The Storm Prediction Center (SPC) issued a rare high risk for severe weather in two areas of the Mississippi Valley on March 31, the first high risk issuance since March 25, 2021. Photographic resolution (image resolution) deteriorates with each enlargement.Part of the tornado outbreaks of 20–23 North American winterġ Most severe tornado damage see Enhanced Fujita scaleĪ widespread, deadly, and historic tornado outbreak affected large portions of the Midwestern, Southern and Eastern United States on the last day of March and the first of April, the result of an extratropical cyclone that also produced blizzard conditions in the Upper Midwest. Scales in excess of 1:100,000 provide regional assessment information.Įnlarging an aerial photograph will only make the object bigger it will not add more detail in the object. Scales of 1:20,000 to 1:80,000 work well for agriculture and geologic interpretation. Scales of 1:500 to 1:24,000 are best for identifying buildings. In the "Additional Criteria" tab, indicate the desired scale range using the "Scale" option. Use EarthExplorer to search for the aerial photography resolution that fits your needs.
National Agriculture Imagery Program (NAIP) imagery.The following aerial photography products all have a resolution of 1 meter or better, so you should be able to see an object the size of a house:
The ability to see specific items in an aerial image is mostly a function of scale and resolution.
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