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 >
Overview
During the evening of Tuesday, July 18, 2017, a supercell moved from southeastern Montana into northwestern South Dakota. It strengthened as it moved over the Newell area, dropping up to baseball sized hail, with wind gusts of 90 to 100 mph. A wind sensor in Newell broke with a measured wind gust of 93 mph. These strong winds and large hail caused damage around the Newell and Vale areas. Buildings and campers were tipped over, homes and businesses were damaged, and trees and crops were destroyed. A storm survey was completed on Wednesday, July 19th, and several pictures were taken of the damage.
Infrared and Lightning Imagery
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Infrared Imagery | 24 Hr Lightning Strikes |
Photos:
Damage from the Newell/Vale Area
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Corn Damage (3 E Vale) |
Flipped Camper (1.5 E Vale) |
Damaged Tree (1 S Newell) |
Damaged Garage Door (Newell) |
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Destroyed Buildings (1/2 S Newell) |
Roof Damage (1/2 S Newell) |
Flipped Carport (Newell) |
Flipped Building (1/2 S Newell) |
Radar:
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Reflectivity at 731 PM MDT | Velocity at 731 PM MDT | Reflectivity/Velocity at 733 PM MDT |
Storm Reports
THE STORM REPORTS LISTED BELOW ARE IN DESCENDING ORDER AND MAY NOT NECESSARILY BE THE FINAL STORM REPORTS. HAIL REPORTS LISTED BY SIZE (INCHES) SIZE LOCATION ST COUNTY TIME ------ ----------------------- -- -------------- ------- 2.75 NEWELL SD BUTTE 0730 PM RELAYED BY NWS EMPLOYEE...SIGNIFICANT WIND AND HAIL DAMAGE AROUND TOWN 2.00 4 SW NEWELL SD BUTTE 0732 PM ALSO HAD 50 MPH WINDS 1.75 1 E VALE SD BUTTE 0751 PM 1.75 3 S NEWELL SD BUTTE 0735 PM 1.75 NEWELL SD BUTTE 0730 PM CAR WINDOWS BROKEN... SOME HOUSE WINDOWS BROKEN 1.25 NEWELL SD BUTTE 0730 PM 1.00 17 W CASTLE ROCK SD BUTTE 0657 PM 1.00 28 NNW BELLE FOURCHE RES SD BUTTE 0635 PM 0.88 7 WNW NEWELL SD BUTTE 0725 PM 0.75 16 NW HEREFORD SD MEADE 0808 PM TSTM WIND REPORTS LISTED BY SPEED (MPH) SPEED LOCATION ST COUNTY TIME ------ ----------------------- -- -------------- ------- 93.00 NEWELL SD BUTTE 0730 PM WIND SENSOR DESTROYED BY HAIL AFTER RECORDING GUST 75.00 6 NNW HEREFORD SD MEADE 0830 PM 70.00 16 NW HEREFORD SD MEADE 0808 PM 68.00 3 W UNION CENTER SD MEADE 0825 PM 65.00 5 ESE ELM SPRINGS SD MEADE 0900 PM 60.00 1 N HEREFORD SD MEADE 0835 PM 60.00 7 WNW NEWELL SD BUTTE 0725 PM 60.00 17 W CASTLE ROCK SD BUTTE 0657 PM 60.00 28 NNW BELLE FOURCHE RES SD BUTTE 0635 PM 60.00 8 WSW HARDING SD HARDING 0610 PM 60.00 4 N SILVER CITY SD PENNINGTON 0525 PM 55.00 27 WNW CASTLE ROCK SD BUTTE 0616 PM 51.00 8 N REDIG SD HARDING 0700 PM RAIN AMOUNTS (INCHES) AMOUNT LOCATION ST COUNTY TIME ------ ----------------------- -- -------------- ------- 1.50 NEWELL SD BUTTE 0730 PM FELL IN ABOUT 30 MINUTES
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