Dangerously hot conditions are occurring today in southeast Oklahoma, the ArkLaTex, lower Mississippi Valley, and Puerto Rico. Hot temperatures surround this area throughout the southern U.S. Excessive Heat Warnings and Heat Advisories in effect. Excessive rainfall may lead to flash flooding today over parts of northern Alabama into eastern Tennessee and the Cascades. Read More >
Omaha/Valley, NE
Weather Forecast Office
PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 647 PM CDT TUE AUG 3 2021 ...NWS DAMAGE SURVEY FOR 07/30/21 THUNDERSTORM WIND EVENT NEAR PERSIA IOWA... .THUNDERSTORM WIND #1... PEAK WIND /ESTIMATED/: 100 MPH PATH LENGTH /STATUTE/: 1.12 MILES PATH WIDTH /MAXIMUM/: 1.37 MILES FATALITIES: 0 INJURIES: 0 START DATE: JUL 30 2021 START TIME: 759 PM CDT START LOCATION: 3.3 MILES SOUTH-SOUTHWEST OF PERSIA, IA START LAT/LON: 41.5189 / -95.5870 END DATE: JUL 30 2021 END TIME: 805 PM CDT END LOCATION: 4.4 MILES SOUTH OF PERSIA, IA END LAT/LON: 41.5040 / -95.5670 SURVEY SUMMARY: A SEVERE DOWNBURST BEGAN JUST BEFORE 800 PM CDT ON JULY 30TH, APPROXIMATELY 3.3 MILES SOUTH-SOUTHWEST OF PERSIA, IOWA. THIS WAS THE FIRST OF SEVERAL DOWNBURST EVENTS THAT TOOK PLACE FROM THE SAME STORM SYSTEM. OTHER AREAS THAT HAD EXPERIENCED STORM DAMAGE FROM THIS SYSTEM WERE NEAR MINDEN, OAKLAND AND HANCOCK. THE DAMAGE SOUTH OF PERSIA WAS PARTICULARLY DEVASTATING, WITH THE WORST DAMAGE NEAR THE BEGINNING OF THE DOWNBURST. SEVERAL METAL GRAIN BINS WERE DESTROYED BY THE INTENSE WINDS. A 200-FOOT-LONG SHED LOST PART OF ITS ROOF, AND THE REMAINDER OF IT COLLAPSED ON FARM VEHICLES INSIDE. THERE WAS ALSO SEVERE TREE DAMAGE TO THIS FARMSTEAD. ABOUT A HALF MILE TO THE EAST OF THIS FARMSTEAD, ANOTHER ONE LOST THE FRONT PART OF ITS MACHINE SHED. AND ON URBANA AVENUE, ABOUT A HALF MILE WEST OF THE INITIAL DAMAGE, ANOTHER FARMSTEAD LOST SEVERAL METAL GRAIN BINS, HAD AN OLD BARN DESTROYED, AND HAD THE ROOF TORN OFF ANOTHER BARN. IN ADDITION, THERE WAS SEVERE TREE DAMAGE WITH LARGE TREE LIMBS DOWN. ABOUT A HALF MILE SOUTH, ALSO ON URBANA AVENUE, ANOTHER FARMSTEAD WAS HIT HARD WITH A BARN GETTING DESTROYED BY THE INTENSE WINDS. AND A MILE TO THE EAST ALONG VINTON AVENUE, THERE WAS DAMAGE TO SHEDS AND LARGE LIMBS DOWN. THE WIND DAMAGE DIVERGED AS THE STORM SYSTEM MOVED SOUTH. MOST OF THE DEBRIS FANNED OUT IN A SOUTH AND SOUTHEAST DIRECTION, TYPICAL OF A MICROBURST (SMALL-SCALE DOWNBURST). THE AREA OF MOST SEVERE DAMAGE COVERED ONLY A 1.15 SQUARE MILE AREA. PEAK WIND SPEEDS WERE ESTIMATED AROUND 100 MPH BASED ON DAMAGE INDICATORS. THANKS GOES OUT TO THE HARRISON COUNTY EMERGENCY MANAGEMENT FOR HELP WITH THIS STORM SURVEY, AND THE 223 DETAILED PHOTOS TAKEN IN THE AREA. && NOTE: THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBLICATION IN NWS STORM DATA. $$
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