Thunderstorms developed during the late afternoon over north central Nebraska as moisture returned to the region behind cold front that moved through the region on the 18th of July. These thunderstorms generally weakened as they moved into northeast Nebraska near midnight, but one storm in Boone County produced damaging 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.
Thunderstorms developed during the late afternoon over north central Nebraska as moisture returned to the region behind cold front that moved through the region on the 18th of July. These thunderstorms generally weakened as they moved into northeast Nebraska near midnight, but one storm in Boone County produced damaging wind.
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 Jul 20, 5:26 AM CST, 44 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 626 AM CDT MON JUL 20 2015 .SHORT TERM...(TODAY THROUGH WEDNESDAY) ISSUED AT 316 AM CDT MON JUL 20 2015 REGIONAL RADAR MOSAIC SHOWING A COUPLE AREAS OF CONVECTION TO CONTEND WITH THIS MORNING. FIRST IS CLUSTER OF STORMS OVER SD PUSHING INTO THE NRN CWA ALONG A COLD FRONT THAT IS PROGGED TO PUSH DEEPER INTO THE CNTRL PLAINS LATER TODAY. MEANWHILE A LINE OF STORMS WAS LIFTING ACROSS KS ON NOSE OF LLVL JET/THETA-E ADV. LATEST HRRR/RAP13 ARE IN REASONABLE AGREEMENT AREAL COVERAGE WILL INCREASE AS ACTIVITY MERGES EARLY THIS MORNING...BUT THEN QUICKLY DISSIPATES BY LATE MORNING WHEN THE BNDRY MOVES SOUTH OF THE CWA. THE HRRR IS ALSO SHOWING POTENTIAL FOR POST-FRONTAL REDEVELOPMENT ALONG THE 850MB WARM FRONT/MID LYR AGEOSTROPHIC LIFT MAINLY OVER THE SRN CWA LATER THIS AFTN. RELATIVELY MILD CONDITIONS ON TAP THEN THROUGH AT LEAST WED AS AS COOLER AIR MASS REMAINS IN CONTROL OVER THE REGION. GOING FCST HAS SMALL POPS IN PLACE OVER THE SRN CWA WED NIGHT ASSOCIATED WITH A WARM FRONT LIFTING OUT OF KS/MO. WITH LATEST MODELS STILL SUPPORTING POSSIBLE DEVELOPMENT...SEE LITTLE REASON TO MAKE ANY CHANGES. .LONG TERM...(WEDNESDAY NIGHT THROUGH SUNDAY) ISSUED AT 316 AM CDT MON JUL 20 2015 OVERALL THE GFS/ECM/CMC MAY BE IN AGREEMENT IN REGARDS TO LARGE SCALE FLOW EVOLVING TO A LOW AMPLITUDE RIDGE PATTERN ENCOMPASSING THE CONUS HEADING INTO NEXT WEEKEND...BUT CONSIDERABLE DIFFERENCES SEEN IN REGARDS TO SFC FEATURES/FROPA. THIS BEST DEPICTED ON SAT/06Z WITH PCPN DEVELOPMENT PER THE GFS ASSOCIATED WITH A COLD FRONT DROPPING INTO THE CNTRL PLAINS. ECM ON THE OTHER HAND AT THAT TIME DEVELOPS PCPN ASSOCIATED WITH A WARM FRONT LIFTING OUT OF KS. GIVEN THAT THE EVOLVING PATTERN IS NOT ALL THAT FAVORABLE FOR PCPN ACTIVITY...HAVE TAKEN THE LIBERTY OF REMOVING POPS FROM MOST OF THE EXTENDED PDS EXCEPT FOR FRIDAY NIGHT LEAVING TOKEN 20S IN PLACE. && .AVIATION...(12Z TAFS FOR KOFK...KLNK AND KOMA.) ISSUED AT 623 AM CDT MON JUL 20 2015 MORNING SHOWERS/STORMS COULD SKIRT NEAR KOMA/KOFK...AND HAVE INCLUDED MENTION OF TSRA AT KOMA THIS MORNING. COLD FRONT FOLLOWS BEHIND THE SHOWERS/STORMS...WITH WINDS BECOMING NORTHWESTERLY AND INCREASING TO AROUND 10-14KT BY THIS AFTERNOON. MAY SEE SHOWERS OR AN ISOLATED STORM DEVELOP AGAIN NEAR KOMA/KLNK THIS AFTERNOON...BUT HAVE KEPT MENTION OUT FOR NOW WITH LOW CONFIDENCE ON DEVELOPMENT AND LOCATION. WINDS WILL DECREASE AFTER SUNDOWN TO AROUND 5KT OR LESS. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...NONE. IA...NONE. && SHORT TERM...DEE LONG TERM...DEE AVIATION...MAYES
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 334 AM CDT MON JUL 20 2015 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-202245- MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT- PAGE-KNOX-CEDAR-THURSTON-ANTELOPE-PIERCE-WAYNE-BOONE-MADISON- STANTON-CUMING-BURT-PLATTE-COLFAX-DODGE-WASHINGTON-BUTLER- SAUNDERS-DOUGLAS-SARPY-SEWARD-LANCASTER-CASS-OTOE-SALINE- JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON- 334 AM CDT MON JUL 20 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST IOWA...WEST CENTRAL IOWA...EAST CENTRAL NEBRASKA...NORTHEAST NEBRASKA AND SOUTHEAST NEBRASKA. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS OVER NORTHEAST NEBRASKA AND SOUTH OF THE I-80 CORRIDOR WILL GRADUALLY DISSIPATE THROUGH THE MORNING HOURS...BUT THERE IS A CHANCE FOR REDEVELOPMENT LATER THIS AFTERNOON OVER EXTREME SOUTHEAST NEBRASKA AND EXTREME SOUTHWEST IOWA. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS A SLIGHT CHANCE OF THUNDERSTORMS FRIDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.
The Omaha radar (KOAX), 178 km away, was scanning. The volume nearest the first event began at 12:10 UTC.
1 thunderstorm wind. Local standard time, as filed.
Scattered large tree branches were blown down around town. In addition, one healthy tree was uprooted and fell into a house in town.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2015Every state in 2015This day in weather historyWarnings in Nebraska, July 2015
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: 580144.