Storm Data and Unusual Weather Phenomena - CIG

IDAHO, SouthwestElmore County3 Island State Park 16 0730MST1015MST0 0 5KHeavy RainTwin Falls CountyFiler16 1010MST1230MST0 0 5KHeavy RainOwyhee CountyNr Hammett On I84 16 1535MST1700MST0 0Heavy RainThunderstorm activity produced heavy rain in Southwestern Idaho. Over 2 inches of rain fell in under three hours at Three IslandState Park causing minor flooding in the parking lots at the park. Several reports of heavy rain occured in Twin Falls county. Filerreported 1/2 inch of flooding. Near Hammett on I-84 a thunderstorm produced heavy rain and hail which brought visiblities downto zero stopping traffic until the storm passed.IDZ001-003Treasure Valley - Upper Snake River Valley17200800MST0800MST0 0 20KFloodDue to extensive rainfall and warm temperatures, flooding took place at several locations. Damage occured on the Middle Fork ofthe Weiser river where sandbags were needed to protect a house. The Payette river at Emmett rose above flood stage causing alevee near Fruitland to fail. A section of State Route 52 was flooded three miles east of New Plymouth and several homes nearBlack's Bridge were flooded. Five homes were evacuated. In Southeast Idaho, Henry's Fork river closed the Parker-Salemhighway due to high water as well as causing low-land flooding west of Rexburg. The Portneuf River at Pocatello rose above floodstage causing low land flooding along Marsh Creek and between Inkom and Pocatello.IDZ001-003Payette CountyNew PlymouthWashington CountyWeiserStorm Data and Unusual Weather PhenomenaTime Path PathNumber ofEstimatedLocal/ Length WidthPersonsDamageLocation Date Standard (Miles) (Yards) Killed Injured Property Crops Character of StormTreasure Valley - Upper Snake River Valley17 0800MST0 0 40KFlood20 0800MSTDue to warm temperatures and excessive rainfall several rivers rose above flood stage causing flood damage during this period.The Middle Fork of the Weiser River caused damage and sandbags were needed to protect one home. The Payette River atEmmett rose above flood stage causing a levee at Fruitland to fail. The high water also flooded a section of State Route 52 threemiles east of New Plymouth, and several houses near Black's Bridge were flooded. In New Plymouth and Payette five homes wereevacuated. In Southeastern Idaho, Henry's Fork river closed the Parker-Salem highway and caused lowland flooding nearRexberg. The Portneuf at Pocatello caused lowland flooding along Marsh Creek and between Inkom and Pocatello.17171630MST1745MST1758MST1815MSTCanyon County6 W Parma toParma17 2130MST2200MSTValley CountyMc Call17 2131MST2215MSTPayette CountyNew Plymouth17 2145MST2230MSTCanyon CountyParma17 2200MST2300MSTGem CountyEmmett17 2230MST2330MSTValley CountyCascade17 2235MST2330MSTCanyon County1 W 1W Lake Lowell toLake Lowell18 1935MST1950MSTElmore CountyCj Strike Reservoir 18 2000MST2015MST5.5 15 00.3 20 0000000000000005K50K50K5K5K5K5K5KThunderstorm Wind (G58)Tornado (F1)Tornado (F1)Thunderstorm Wind (G60)Thunderstorm Wind (G60)Thunderstorm Wind (G58)Thunderstorm Wind (G60)Thunderstorm Wind (G58)Several severe thunderstorms developed causing extensive wind damage and spawning two F1 tornados. One tornado in Weiserdestoryed a two-story garage and two roofs on nearby mobile homes. A total of five homes were affected. The second tornadooccured 6 miles west of Parma. This tornado damaged three grain bins, a shed and several irragation pipes on a remote farm.Thunderstorm winds gusting to 60 mph occured in New Plymouth, Parma, Cascade, Emmett, McCall, and Baker City Oregondowning several trees and power lines as well as causing power outages.0000Funnel CloudHeavy RainMay 1996