A strong upper-level storm system tracked from the northern Rockies into northern High Plains with an associated surface low developing east across the Dakotas. Thunderstorms developed during the late afternoon and evening hours from north-central into eastern Nebraska along a trailing cold front with storms organizing into a bow-echo complex which produced numerous severe wind gusts and wind…
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OAX wrote it up.
A strong upper-level storm system tracked from the northern Rockies into northern High Plains with an associated surface low developing east across the Dakotas. Thunderstorms developed during the late afternoon and evening hours from north-central into eastern Nebraska along a trailing cold front with storms organizing into a bow-echo complex which produced numerous severe wind gusts and wind damage over northeast Nebraska and extended into western Iowa.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Omaha, NE wrote its last area forecast discussion before the first event at Jun 1, 5:26 PM CST, 5 hours 46 minutes earlier.
Area Forecast Discussion National Weather Service Omaha/Valley NE 626 PM CDT Fri Jun 1 2018 .SHORT TERM...(Tonight through Monday) Issued at 300 PM CDT Fri Jun 1 2018 Hot and dry conditions are in place across the forecast area this afternoon with better boundary layer moisture just to the west over central Nebraska. Main focus tonight will be dealing with MCS forecast to develop by early evening near the western border of the CWA and its track into western Iowa by Saturday morning. Strong to severe storms are expected from around 00Z near our western border area then to spread east to near the Iowa border by 05Z. Wind and hail will be the primary hazards with the storms as well as localized flooding in some areas. Threat of severe weather and heavy rain continues through most of the late night period after midnight as the low level jet increases and impacts the system. The cold front associated with this system is forecast to be over the southeast corner of Nebraska and southwest Iowa by 12Z Saturday with the chance of thunderstorms decreasing in eastern areas through the morning. Behind the front much cooler and drier air will move into the region by Saturday afternoon with gusty northwest winds. High pressure then dominates the weather for the area into Monday with more seasonal temperatures, about 15 to 20 degrees cooler then what we're seeing today. A weak upper level trough moving across the southern plains will bring a small chance of showers to southern parts of the area near the Kansas border on Monday before dropping south toward the lower Mississippi Valley Monday night. .LONG TERM...(Monday night through Friday) Issued at 300 PM CDT Fri Jun 1 2018 Warmer temperatures return for the rest of the work week with some chance of off and on storms as mainly dry weather as area comes under southern edge of stronger flow on periphery of upper high pressure over the southern plains. && .AVIATION...(For the 00Z TAFS through 00Z Saturday evening) Issued at 618 PM CDT Fri Jun 1 2018 Main aviation concerns are with line of thunderstorms expected to roll through eastern Nebraska tonight. Line currently in central Nebraska is expected to accelerate east this evening, reaching KOFK around 03Z, then KLNK and KOMA between 05Z and 08Z. Winds in excess of 50kt are possible with the initial surge of storms as they move through. Also, large hail could accompany some storms both early in the event near KOFK, and also after the line passes with remnant storms affecting KLNK and KOMA from 06Z through 12Z. Otherwise mainly VFR conditions are expected with winds turning northwest behind line of storms, then increasing into the 20 to 30kt range for much of Saturday. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && SHORT TERM...Fobert LONG TERM...Fobert AVIATION...Dergan
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 413 PM CDT Fri Jun 1 2018 NEZ011-016-017-030-031-042-050-065-078-088-021115- Knox-Antelope-Pierce-Boone-Madison-Platte-Butler-Seward-Saline- Jefferson- 413 PM CDT Fri Jun 1 2018 This Hazardous Weather Outlook is for portions of east central Nebraska...northeast Nebraska and southeast Nebraska. .DAY ONE...Tonight and Saturday Severe storms are expected to continue to develop across central Nebraska late this afternoon and move into northeast Nebraska by 7 pm, then spread east southeast through the remainder of the evening. Supercell storms will be possible in parts of eastern Nebraska, mainly west of a Fairbury to Norfolk to Yankton line. Primary hazards will be damaging winds and large hail, with a tornado or two possible. Locally heavy rainfall up to 2 inches could also occur. Training of thunderstorms could develop, especially later tonight, with 2 or 3 rounds of strong to severe storms moving across the same locations, which could result in a small flash flood risk. The severe weather threat will likely linger into early Saturday morning. .DAYS TWO THROUGH SEVEN...Saturday night through Friday Additional thunderstorm chances will exist Monday and Wednesday of next week. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed tonight. IAZ043-055-056-069-079-080-090-091-NEZ012-015-018-032>034-043>045- 051>053-066>068-089>093-021115- Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont- Page-Cedar-Thurston-Wayne-Stanton-Cuming-Burt-Colfax-Dodge- Washington-Saunders-Douglas-Sarpy-Lancaster-Cass-Otoe-Gage- Johnson-Nemaha-Pawnee-Richardson- 413 PM CDT Fri Jun 1 2018 This Hazardous Weather Outlook is for portions of southwest Iowa...west central Iowa...east central Nebraska...northeast Nebraska and southeast Nebraska. .DAY ONE...Tonight and Saturday Severe storms are expected to continue to develop across central Nebraska late this afternoon and move into northeast Nebraska by 7 pm, then spread east southeast through the remainder of the evening. Supercell storms will be possible in parts of eastern Nebraska and southwest Iowa tonight with the primary hazards damaging winds up to 70 to 80 mph and large hail. Locally heavy rainfall up to 2 inches could also occur. Training of thunderstorms could develop, especially later tonight, with 2 or 3 rounds of strong to severe storms moving across the same locations, which could result in a small flash flood risk. The severe weather threat will likely linger into early Saturday morning. .DAYS TWO THROUGH SEVEN...Saturday night through Friday Isolated non severe thunderstorms could still occur Saturday morning. Additional thunderstorm chances will exist Monday and Wednesday of next week. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed tonight. Fobert
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1120 PM CDT FRI JUN 1 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1105 PM TSTM WND GST DODGE 41.72N 96.88W
06/01/2018 E60 MPH DODGE NE LAW ENFORCEMENT
&&
DEWALDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1136 PM CDT FRI JUN 1 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1115 PM TSTM WND DMG WEST POINT 41.84N 96.71W
06/01/2018 CUMING NE LAW ENFORCEMENT
TREE LIMBS AND POWER LINES BLOWN DOWN.
&&
DEWALDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1137 PM CDT FRI JUN 1 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1137 PM TSTM WND GST 2 WNW FREMONT 41.45N 96.52W
06/01/2018 M60 MPH DODGE NE AWOS
&&
DEWALDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1142 PM CDT FRI JUN 1 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1045 PM TSTM WND DMG 1 NW COLUMBUS 41.44N 97.37W
06/01/2018 PLATTE NE EMERGENCY MNGR
NUMEROUS TREES DOWN ACROSS THE CITY, POWER
LINES DOWN, TRAMPOLINES WRAPPED AROUND POWER
POLES.
&&
DEWALDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1157 PM CDT FRI JUN 1 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1035 PM TSTM WND GST 4 SE CRESTON 41.66N 97.31W
06/01/2018 E60 MPH PLATTE NE TRAINED SPOTTER
&&
DEWALDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1200 AM CDT SAT JUN 2 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1158 PM TSTM WND GST 2 ESE TEKAMAH 41.76N 96.18W
06/01/2018 M67 MPH BURT NE ASOS
&&
DEWALDThe Omaha radar (KOAX), 63 km away, was scanning. The volume nearest the first event began at 05:13 UTC.
3 thunderstorm wind. Local standard time, as filed.
A cooperative observer near Little Sioux estimated 60 mph winds.
A semi-truck was blown over on I-29, about 3 miles south of Blencoe.
Large tree limbs were blown down, partially blocking a street in Council Bluffs.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2018Every state in 2018This day in weather historyWarnings in Iowa, June 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 770169, 770160, 770164.