A complex of thunderstorms that had developed over the western plains during the overnight hours of August 5th and 6th moved across eastern Nebraska during the late morning and early afternoon hours of August 6th. mainly damaging winds.
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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 complex of thunderstorms that had developed over the western plains during the overnight hours of August 5th and 6th moved across eastern Nebraska during the late morning and early afternoon hours of August 6th. This complex intensified somewhat over eastern Nebraska as it encountered the unstable conditions present and produced scattered severe reports...mainly damaging winds.
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 Aug 6, 2:02 AM CST, 7 hours 43 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 302 AM CDT MON AUG 6 2007 .DISCUSSION... THUNDERSTORM CHANCES OVER THE NEXT SEVERAL DAYS REMAINS THE PRIMARY FORECAST CONCERN. FRONTAL BOUNDARY HAD SLIPPED SOUTH OF THE CWA LAST EVENING BUT APPEARS TO HAVE DRIFTED BACK INTO SOUTHEAST NEBRASKA AND SOUTHWEST IOWA THIS MORNING. THUNDERSTORM DEVELOPMENT OVER THE NEXT FEW DAYS WILL LIKELY BE CLOSELY TIED TO THIS BOUNDARY...BUT FORECASTING ITS EXACT POSITION REMAINS A REAL PROBLEM. GFS AND NAM FORECASTS OFFER LITTLE AGREEMENT...ESPECIALLY BEYOND TONIGHT...SO CONFIDENCE IN EXACT LOCATIONS OF BEST RAIN CHANCES WANES WITH TIME. HIGH CONFIDENCE EXISTS WITH REGARDS TO MOISTURE AVAILABILITY. SURFACE DEW POINTS WILL REMAIN IN THE 70S THROUGH THE WEEK...WITH SOME MIXING IN THE AFTERNOON LOWERING THESE VALUES SOMEWHAT FROM TIME TO TIME. THOUGH PRECIPITABLE WATER WAS SUPPRESSED SOUTH OF THE CWA THIS MORNING...MODELS SURGE 2+ INCH VALUES BACK INTO THE CWA THIS AFTERNOON...THEN KEEP IT HERE THROUGH WEDNESDAY NIGHT. INSTABILITY WILL BE DEPENDENT UPON AMOUNT OF AFTERNOON HEATING WHICH WILL BE AFFECTED BY LINGERING MID/HIGH LEVEL CLOUDS FROM CONVECTION. AND SEVERAL SHORTWAVES IN MID LEVEL FLOW WILL COME INTO PLAY...BUT TIMING THOSE MORE THAN 12 OR 24 HOURS OUT IS FUTILE. SO WILL PLAY A BLEND OF GFS...NAM...AND OTHER SHORT RANGE MODELS AS FAR AS FRONTAL BOUNDARY POSITIONING AND FOCUS HIGHEST POPS ALONG AND NORTH OF IT FOR THE NEXT THREE DAYS. WE LOOK TO HAVE A PRETTY DECENT CHANCE FOR CONVECTION LATE THIS AFTERNOON AND TONIGHT OVER THE NORTHERN HALF OF THE CWA. WITH THE FRONT ALREADY SHIFTING NORTH...AND NAM/GFS BOTH TARGETING PRECIP THERE TONIGHT...HAVE INSERTED LIKELY POPS OVER OUR NORTHERN HALF. WITH AMOUNT OF MOISTURE AVAILABLE...HEAVY RAIN IS A CONCERN. BUT INSTABILITY IS HIGH AS WELL SO SEVERE STORMS COULD ALSO AFFECT THE CWA. FREEZING LEVELS ARE QUITE HIGH...SO HAIL MAY BE HARD TO COME BY...WITH WET MICROBURSTS A BETTER BET. LOCALIZED MAXIMA OF LOW LEVEL HELICITY ALONG FRONTAL BOUNDARY AND LOW LCL WILL ALSO HAVE TO BE EXAMINED FOR POTENTIAL TORNADIC DEVELOPMENT. FRONT WILL WOBBLE NORTH AND SOUTH THROUGH THE CWA TUESDAY AND WEDNESDAY DEPENDING ON PREVIOUS NIGHT CONVECTION...SO NAILING DOWN PRECIP AREAS IS TOUGH. BUT IS LOOKS LIKE THE SOUTHERN CWA WILL HAVE HIGHEST POPS TUESDAY...THEN NORTHERN CWA ON WEDNESDAY. SIGNIFICANT SHORTWAVE ROLLING THROUGH THE NORTHERN PLAINS WEDNESDAY NIGHT SHOULD DRIVE FRONT SOUTH OF THE CWA THEN...SO HAVE KEPT THE END TO OUR RAIN CHANCES AT WEDNESDAY NIGHT AND THE REST OF THE FORECAST DRY. SAME SEVERE WEATHER POTENTIAL WILL EXIST BOTH TUESDAY AND WEDNESDAY AFTERNOON AND EVENING...BUT WILL HAVE TO BE FINE TUNED EACH MORNING. UPPER RIDGE BUILDS INTO THE PLAINS THURSDAY AND FRIDAY...SO WARMER TEMPERATURES EXPECTED THEN. HIGHS SHOULD AVERAGE THE LOWER 90S THROUGH WEDNESDAY WITH MID 90S OR HIGHER LATE IN THE WEEK. && .AVIATION... SFC FNT FM SRN IA INTO NRN KS WL CONT TO WASH OUT THIS MRNG. NEVERTHELESS...NERLY LO LVL FLOW BEHIND THE FNT WL COMBINE WITH A VRY MOIST BOUNDARY LAYER TO CREATE SOME IFR TO LIRF CONDS FOR PARTS OF THE AREA AGAIN THIS MRNG. THIS IS MOST LIKELY FOR THE KOMA TERMINAL THRU 14Z. OTHERWISE AS HEATING PICKS UP THIS MRNG SHLD ONCE AGAIN SEE THE CEILINGS QUICKLY IMPROVE THIS MRNG. ANOTHER POSSIBLE MCV SEEMS TO BE ORGANIZING OVR ERN CO THIS MRNG AND THIS MAY SPREAD CIRRUS ACRS THE AREA THRU THE DAY...BUT VFR CONTS ARE EXPECTED. WITH THE FNT IN THE AREA AND AN IMPULSE MOVING INTO THE WRN HI PLAINS THIS AFTN...ISO/SCT TSRA ARE EXPECTED TO DVLP AFTR 21Z. THIS IS MOST LIKELY TO OCCUR OVR AREAS OF S-CNTRL SD INTO CNTRL NEB AND TRACK E OVERNIGHT. DUE TO THE HIGH UNCERTAINTY OF TIMING CONVECTION WL GO WITH A DRY FORECAST FOR NOW...BUT TSRA CAN BE EXPECTED AT SOME POINT BETWEEN 00Z AND 12Z TUE AT THE KOMA/KOFK SITES. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...NONE. IA...NONE. && DERGAN/BOUSTEAD
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1042 AM CDT MON AUG 6 2007 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-070545- 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- 1042 AM CDT MON AUG 6 2007 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 SEVERE THUNDERSTORMS PRODUCING DAMAGING WINDS ARE POSSIBLE TODAY AND TONIGHT FOR ALL OF EASTERN NEBRASKA AND SOUTHWEST IOWA. LOCALLY HEAVY RAIN IS ALSO LIKELY. A FRONTAL BOUNDARY WILL CONTINUE TO LIFT NORTH TODAY AND SET UP ACROSS NORTHEAST NEBRASKA AND WEST CENTRAL IOWA BY LATE AFTERNOON AND EARLY EVENING. THUNDERSTORMS ARE EXPECTED TO FOCUS NEAR THE FRONTAL BOUNDARY AND GRADUALLY MOVE NORTH THROUGHOUT THE DAY. WITH AN EXTREMELY MOIST ATMOSPHERE IN PLACE...VERY HEAVY RAIN IS ALSO LIKELY WITH THE THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SEVERE THUNDERSTORMS WILL BE POSSIBLE AGAIN TUESDAY AND WEDNESDAY AS THE FRONT REMAINS IN THE AREA THROUGH WEDNESDAY NIGHT. DAMAGING WINDS WILL BE PRIMARY HAZARD. .SPOTTER INFORMATION STATEMENT... STORM SPOTTER MAY BE NEEDED TODAY AND TONIGHT ACROSS ALL OF EASTERN NEBRASKA AND SOUTHWEST IOWA. GRIFFIS
The Omaha radar (KOAX), 128 km away, was scanning. The volume nearest the first event began at 15:46 UTC.
3 thunderstorm wind. Local standard time, as filed.
A trained weather spotter estimated wind gusts from a thunderstorm of around 70 mph.
Thunderstorm wind gusts estimated at 60 mph were reported by a trained weather spotter.
Thunderstorm winds estimated at 60 mph knocked down some large tree limbs northwest of Colon.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2007Every state in 2007This day in weather historyWarnings in Nebraska, August 2007
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: 39778, 39779, 39777.