Scattered thunderstorms developed north of a nearly stationary front that was near southeast Nebraska. The storms produced areas of heavy rain in southeast Nebraska and at least one reported of flash flooding.
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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.
Scattered thunderstorms developed north of a nearly stationary front that was near southeast Nebraska. The storms produced areas of heavy rain in southeast Nebraska and at least one reported of flash flooding.
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 7, 2:56 AM CST, 5 hours 4 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 356 AM CDT THU JUL 7 2011 .DISCUSSION... FORECAST CONCERNS WILL CONTINUE TO BE TIMING AND PLACEMENT OF CONVECTION. A LOOK AT THE LATEST WSR-88D RADAR MOSAIC SHOWS THE CONVECTIVE COMPLEX HAS BEEN MAKING STEADY PROGRESS ACROSS NEBRASKA AND KANSAS. NEW DEVELOPMENT HAS BEEN OCCURRING FARTHER NORTH IN EASTERN NORTH DAKOTA. THIS NEW DEVELOPMENT IS LIKELY DUE TO THETA-E ADVECTION AND VERTICAL MOTION ASSOCIATED WITH THE SHORTWAVE TROF IN NORTHWEST FLOW. INFRARED SATELLITE IMAGERY HAS THE COLDEST TOPS WITH THE CONVECTION IN KANSAS IN THIS IS WHERE PRECIPITABLE WATER IS LIKELY AROUND 2 INCHES. A WEAK WAVE WAS ALSO NOTED ON SATELLITE AND RADAR OVER PARTS OF WYOMING. TODAY THE MAIN SHORTWAVE TROF WILL CONTINUE TO PUSH EAST AND BY 18Z EXTEND FROM WISCONSIN THRU IOWA INTO ERN KANSAS. WILL MAINTAIN THE HIGHER PROBABILITY OF PRECIPITATION IN THE SOUTHEAST NEBRASKA AND SOUTHWEST IOWA ZONES WITH ISOLATED FARTHER NORTH. THIS AFTERNOON...SUBSIDENCE SHOULD OCCUR...HOWEVER FORECAST SOUNDINGS SHOW ISOLATED STORMS POSSIBLE WITH HEATING THIS AFTERNOON AND WITH LITTLE CAP COULD OVERCOME THE SUBSIDENCE. ALSO...THE SHORT RANGE MODELS HAVE BEEN SHOWING A MINOR WAVE IN THE DAKOTAS THIS AFTERNOON AND EVENING AND THIS COULD HELP GET A FEW STORMS STARTED. FOR NOW...LEFT IN LOW POPS FOR CONTINUITY. TONIGHT...MID LEVEL RIDGING INCREASES AHEAD OF THE NEXT WAVE. ALTHOUGH SOMETHING ISOLATED COULD DEVELOP IN NORTHWEST FLOW...TOO LOW A PROBABILITY TO MENTION. FRIDAY...HAVE THE FORECAST MAINLY DRY...EXCEPT AN ISOLATED THUNDERSTORM MENTION IN NORTHEAST NEBRASKA AND WEST CENTRAL IOWA. FRIDAY NIGHT THROUGH SATURDAY NIGHT...ANOTHER SHORTWAVE WILL DRAG A FRONTAL SYSTEM INTO THE PLAINS. INCREASING MOISTURE WILL BE DRAWN NORTHWARD AS H85 FLOW INCREASES FROMT THE SOUTH. THE ORGANIZED CONVECTION SHOULD BE CLOSER TO THE STORM SYSTEM IN THE DAKOTAS...HOWEVER STORMS SHOULD TRY TO WORK INTO THE NORTH FRIDAY NIGHT. INSTABILITY INCREASES OVER THE FORECAST AREA SATURDAY WITH BETTER SHEAR IN THE DAKOTAS. THE WARM MID LEVEL TEMPERATURES WILL BE BUILDING INTO THE SOUTHERN PARTS OF THE FORECAST AREA FRIDAY NIGHT THROUGH SATURDAY NIGHT. WITH THE STORMS THAT FORM...WILL NEED TO MONITOR HEAVY RAIN THREAT. TEMPERATURES SHOULD BE AT OR ABOVE NORMAL THURSDAY THROUGH SATURDAY NIGHT. SUNDAY...THROUGH WEDNESDAY LOOKS TO BE AN ACTIVE PERIOD. THE MONSOONAL MOISTURE WILL CONTINUE TO STREAM NORTHWARD INTO ROCKIES AND ON TO THE PLAINS...WHERE A SURFACE BOUNDARY WILL LINGER OVER NEBRASKA...IOWA...SOUTHERN SOUTH DAKOTA AND SOUTHERN MINNESOTA. THE H85 THERMAL TEMPERATURES SHOULD GENERALLY EXTEND FROM WEST TEXAS INTO KANSAS AND NEBRASKA...THIS WOULD KEEP TEMPERATURES AT OR ABOVE NORMAL DURING THE PERIOD. && .AVIATION... TAF SITES KOFK/KOMA/KLNK 06Z TAFS CONVECTIVE COMPLEX MOVING VERY SLOWLY SE TOWARD LINCOLN SHOULD SPREAD SHOWERS/TSTMS TOWARD THAT AREA THROUGH 10Z OR SO BEFORE SHIFTING SOUTH. WITH 06Z TAF ISSUANCE IT APPEARED ACTIVITY WOULD STAY WSW OF KOMA...SO NO MENTION WAS MADE AT KOMA WITH THAT ISSUANCE. OTHERWISE...AFTER CONVECTION PRESSES SOUTH OF AREA THIS MORNING...SOME LOW CLOUDS AND FOG WERE EXPECTED TO DEVELOP/MOVE ACROSS NORTH OF COMPLEX FOR SEVERAL HOURS. VFR CONDITIONS SHOULD THEN PREVAIL AT TAF SITES AFTER ABOUT 07/14Z AS FOG AND LOW CLOUDS LIFT/BREAK UP. OUTSIDE OF IMMEDIATE CONVECTION THIS MORNING WIND FIELD EXPECTED TO BE LIGHT THROUGH FORECAST. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...NONE. IA...NONE. && ZAPOTOCNY/CHERMOK
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 505 AM CDT THU JUL 7 2011 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-080015- 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- 505 AM CDT THU JUL 7 2011 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 THE MAIN AREA OF THUNDERSTORMS WILL MOVE OUT EARLY THIS MORNING HOWEVER A FEW NON-SEVERE THUNDERSTORMS MAY LINGER TODAY. WIDESPREAD FLOODING WILL CONTINUE ALONG THE MISSOURI RIVER. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THUNDERSTORM CHANCES CONTINUE ACROSS THE AREA THURSDAY NIGHT THROUGH WEDNESDAY. SEVERE STORMS ALONG WITH LOCALLY HEAVY WILL BE POSSIBLE SATURDAY AND BEYOND AHEAD OF THE COLD FRONT AND THEN AS THE FRONT BECOMES STATIONARY OVER THE AREA. MODERATE TO MAJOR FLOODING WILL CONTINUE ALONG THE MISSOURI RIVER FOR THE NEXT SEVERAL WEEKS. .SPOTTER INFORMATION STATEMENT... STORM SPOTTER ACTIVATION TODAY OR TONIGHT. ZAPOTOCNY
The Omaha radar (KOAX), 99 km away, was scanning. The volume nearest the first event began at 13:58 UTC.
1 flash flood. Local standard time, as filed.
Up to 4 inches of rain caused isolated flash flooding in extreme southern Otoe county naer county roads R and 70 during the morning of 7/7. Little damage was noted.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2011Every state in 2011This day in weather historyWarnings in Nebraska, July 2011
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: 333870.