Thunderstorms developed in southeast Nebraska an elevated warm advection zone north of a surface warm front which was in southeast Kansas. The storms produced isolated hail reports as large as half dollar-size.
Every event with a place to put it. Tap one for its entry below.
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 in southeast Nebraska an elevated warm advection zone north of a surface warm front which was in southeast Kansas. The storms produced isolated hail reports as large as half dollar-size.
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 May 29, 2:30 AM CST, 3 hours 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 330 AM CDT SUN MAY 29 2011 .DISCUSSION... PRIMARY FORECAST CONCERNS ARE THUNDERSTORM CHANCES OVER THE NEXT 48 HOURS...WINDS MONDAY AND TEMPERATURES. UPPER AIR CHARTS FROM LAST EVENING SHOWED THE FOLLOWING. AT 300 MB... STRONG WINDS WERE NOTED WITH JETSTREAM EXTENDING FROM CENTRAL CALIFORNIA ACROSS THE ROCKIES INTO SOUTH DAKOTA...SOUTHERN MINNESOTA AND WISCONSIN. CLOSED LOW AT 500 MB WAS OVER OREGON WITH 12 HOUR HEIGHT FALLS MAX OF 130 METERS AT KOAK. AT 700 MB...TEMPERATURES OF 15 DEGREES CELSIUS OR WARMER WERE NOTED OVER NEW MEXICO...TEXAS AND OKLAHOMA. THERE WAS STILL A FAIRLY TIGHT THERMAL GRADIENT OVER THE CENTRAL PLAINS. AT 850 MB...MOISTURE WAS POOLED FROM NORTH TEXAS UP INTO PARTS OF OKLAHOMA...KANSAS AND MISSOURI. VERY WARM AIR... WITH TEMPERATURES OF 30 DEGREES CELSIUS WERE NOTED ACROSS PARTS OF NEW MEXICO AND WEST TEXAS. WATER VAPOR IMAGERY SHOWED THAT 500 MB CLOSED LOW CONTINUE TO DIG SOUTHWARD AND WAS OVER NORTHERN CALIFORNIA EARLY THIS MORNING. AT 08Z...SURFACE ANALYSIS SHOWED A FRONTAL BOUNDARY STRETCHING FROM SOUTHERN ILLINOIS BACK INTO LOW PRESSURE IN NORTHEAST NEW MEXICO. ANOTHER LOW WAS NEAR THE BORDER OF UTAH AND COLORADO. FRONTAL BOUNDARY SHOULD TRY TO LIFT NORTHWARD TODAY AS A FAIRLY COMPLEX LOW PRESSURE SYSTEM ORGANIZES OVER COLORADO. THUNDERSTORM CHANCES WILL CONTINUE OVER MUCH OF THE AREA TODAY...THEN SHIFT UP INTO THE DAKOTAS AND MINNESOTA BY LATE TONIGHT. AT LEAST SOME SEVERE STORMS WILL BE POSSIBLE...WITH HAIL THE MAIN THREAT. MODELS SHOW 700 MB TEMPERATURES WARMING OVER THE LOCAL AREA TODAY AND AT LEAST OUR SOUTHERN COUNTIES SHOULD BECOME CAPPED THIS AFTERNOON. EXPECT HIGHS TO RANGE FROM THE UPPER 60S NORTH TO THE LOWER AND MID 80S SOUTH. THIS WILL ALL BE DEPENDENT ON LOCATION OF FRONT AND AMOUNT OF CLOUD COVER. THAT WARM BUBBLE WILL CONTINUE TO BUILD NORTH TONIGHT...PUSHING THE CHANCE FOR SHOWERS AND THUNDERSTORMS OUT OF OUR AREA BY 12Z MONDAY. WINDY CONDITIONS ARE EXPECTED MONDAY...AND A WIND ADVISORY MAY BE NEEDED. TEMPERATURES SHOULD REACH THE MID AND UPPER 80S DURING THE AFTERNOON. LEFT A SMALL CHANCE FOR THUNDERSTORMS WEST OF HIGHWAY 81 FOR THE LATE AFTERNOON...BUT CHANCES ARE MUCH HIGHER IN THE EVENING. 00Z MODELS SHOWED THE 500 MB CLOSED LOW KICKING OUT NORTHEAST FROM WYOMING MONDAY AND INTO SOUTHERN MANITOBA BY TUESDAY AFTERNOON. THE COLD FRONT SHOULD BE A FOCAL POINT FOR THUNDERSTORMS BY 00Z TUESDAY WITH 500 METER MIXED LAYER CAPE VALUES REACHING 2000-3000 J/KG. SO SOME SEVERE STORMS APPEAR LIKELY. AFTER THAT SYSTEM PULLS INTO SOUTHEAST CANADA...PATTERN SHOULD FEATURE A RIDGE OVER PARTS OF THE CENTRAL AND EASTERN UNITED STATES AND A TROUGH OVER THE FAR WEST. MADE ONLY MINOR CHANGES TO FORECAST BEYOND TUESDAY. MILLER && .AVIATION... TAF SITES KOFK/KOMA/KLNK 06Z TAFS THE MAIN CHALLENGE WITH THE AVIATION FORECAST WILL BE THE TIMING OF SHOWERS AND THUNDERSTORMS. A WARM FRONT MOVING NORTH THROUGH NEBRASKA TODAY WILL TRIGGER ADDITIONAL CONVECTIVE ACTIVITY. THERE ARE CURRENTLY SEVERAL AREAS OF SHOWERS AND THUNDERSTORMS ON-GOING IN THE PLAINS EARLY THIS MORNING...INCLUDING A LARGE AREA OF HEAVY RAIN OVER NORTHEAST NEBRASKA. EXPECT THIS AREA TO GRADUALLY MOVE NORTHEAST THIS MORNING...BUT WILL IMPACT KOFK AT LEAST THROUGH 12Z. NEWLY DEVELOPED SHOWERS AND A FEW THUNDERSTORMS OVER NORTHEAST KANSAS SHOULD DRIFT NORTH AND IMPACT THE KLNK AND KOMA SITES BY MID MORNING. A FEW OF THESE STORMS COULD BE STRONG. NIETFELD && .OAX WATCHES/WARNINGS/ADVISORIES... NE...NONE. IA...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 430 AM CDT SUN MAY 29 2011 IAZ043-056-080-091-NEZ012-015>018-030>034-042>044-050-051-065-066- 078-088>090-092-292200- ANTELOPE-BOONE-BURT-BUTLER-CEDAR-COLFAX-CUMING-DODGE-GAGE-JEFFERSON- JOHNSON-LANCASTER-MADISON-MONONA IA-MONTGOMERY IA-PAGE IA-PAWNEE- PIERCE-PLATTE-SALINE-SAUNDERS-SEWARD-SHELBY IA-STANTON-THURSTON- WAYNE- 430 AM CDT SUN MAY 29 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA TODAY AND TONIGHT AS UNSTABLE AIR SPREADS NORTHWARD FROM KANSAS. SOME STRONG TO ISOLATED SEVERE STORMS ARE POSSIBLE TODAY. THE CHANCE FOR ANY SEVERE STORMS SHIFTS TO THE NORTH HALF OF THE AREA TONIGHT...MAINLY NORTH OF A LINE FROM AROUND DAVID CITY TO OMAHA AND OAKLAND IOWA. LARGE HAIL IS EXPECTED TO BE THE PRIMARY HAZARD. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A COLD FRONT WILL SWEEP ACROSS THE AREA MONDAY NIGHT. AHEAD OF THE FRONT...THE ATMOSPHERE WILL BECOME UNSTABLE MONDAY AND STORMS COULD DEVELOP BY LATE AFTERNOON WEST OF HIGHWAY 81. STRONG TO SEVERE STORMS ARE THEN EXPECTED TO SPREAD ACROSS THE AREA MONDAY EVENING AND MONDAY NIGHT. LARGE HAIL AND DAMAGING WINDS SHOULD BE THE MAIN HAZARDS...BUT ISOLATED TORNADOES ALSO APPEAR POSSIBLE. LOCALLY HEAVY RAIN MAY ALSO OCCUR. THERE IS A SLIGHT CHANCE OF THUNDERSTORMS WEDNESDAY AND WEDNESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL PROBABLY NOT BE NEEDED TODAY OR TONIGHT. IAZ055-069-079-090-NEZ011-045-052-053-067-068-091-093-292200- CASS-DOUGLAS-FREMONT IA-HARRISON IA-KNOX-MILLS IA-NEMAHA-OTOE- POTTAWATTAMIE IA-RICHARDSON-SARPY-WASHINGTON- 430 AM CDT SUN MAY 29 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA TODAY AND TONIGHT AS UNSTABLE AIR SPREADS NORTHWARD FROM KANSAS. SOME STRONG TO ISOLATED SEVERE STORMS ARE POSSIBLE TODAY. THE CHANCE FOR ANY SEVERE STORMS SHIFTS TO THE NORTH HALF OF THE AREA TONIGHT...MAINLY NORTH OF A LINE FROM AROUND DAVID CITY TO OMAHA AND OAKLAND IOWA. LARGE HAIL IS EXPECTED TO BE THE PRIMARY HAZARD. MINOR FLOODING ALONG THE MISSOURI RIVER IS EXPECTED FROM BLAIR TO OMAHA AND ALSO IN NORTHERN KNOX COUNTY. MINOR TO MODERATE FLOODING IS EXPECTED FOR THE RIVER FROM AROUND PLATTSMOUTH THROUGH RULO. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A COLD FRONT WILL SWEEP ACROSS THE AREA MONDAY NIGHT. AHEAD OF THE FRONT...THE ATMOSPHERE WILL BECOME UNSTABLE MONDAY AND STORMS COULD DEVELOP BY LATE AFTERNOON WEST OF HIGHWAY 81. STRONG TO SEVERE STORMS ARE THEN EXPECTED TO SPREAD ACROSS THE AREA MONDAY EVENING AND MONDAY NIGHT. LARGE HAIL AND DAMAGING WINDS SHOULD BE THE MAIN HAZARDS...BUT ISOLATED TORNADOES ALSO APPEAR POSSIBLE. LOCALLY HEAVY RAIN MAY ALSO OCCUR. THERE IS A SLIGHT CHANCE OF THUNDERSTORMS WEDNESDAY AND WEDNESDAY NIGHT. MINOR FLOODING ALONG THE MISSOURI RIVER IS EXPECTED INTO NEXT WEEK FROM BLAIR TO OMAHA AND ALSO IN NORTHERN KNOX COUNTY. MINOR TO MODERATE FLOODING IS FORECAST FOR THE RIVER FROM AROUND PLATTSMOUTH THROUGH RULO. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL PROBABLY NOT BE NEEDED TODAY OR TONIGHT. MILLER
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 448 AM CDT SUN MAY 29 2011 NEZ089-090-092-291030- GAGE NE-JOHNSON NE-PAWNEE NE- 448 AM CDT SUN MAY 29 2011 ...SPECIAL WEATHER STATEMENT FOR NORTHWESTERN PAWNEE...JOHNSON AND EASTERN GAGE COUNTIES UNTIL 530 AM CDT... AT 443 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM NEAR BLUE SPRINGS...OR 12 MILES SOUTHEAST OF BEATRICE...MOVING NORTHEAST AT 45 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... TECUMSEH... COOK... VIRGINIA... FILLEY... LEWISTON... CRAB ORCHARD... ELK CREEK... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. NIETFELD
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 459 AM CDT SUN MAY 29 2011 IAZ080-090-091-291045- FREMONT IA-MONTGOMERY IA-PAGE IA- 459 AM CDT SUN MAY 29 2011 ...SPECIAL WEATHER STATEMENT FOR NORTHEASTERN FREMONT...MONTGOMERY AND NORTHWESTERN PAGE COUNTIES UNTIL 545 AM CDT... AT 457 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM NEAR FARRAGUT...OR 22 MILES NORTH OF TARKIO... MOVING NORTHEAST AT 40 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... ESSEX... RED OAK... STANTON... SHENANDOAH... VILLISCA... PIERCE RECREATION AREA... COBURG... VIKING LAKE STATE PARK... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. NIETFELD
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 519 AM CDT SUN MAY 29 2011 IAZ090-091-291100- FREMONT IA-PAGE IA- 519 AM CDT SUN MAY 29 2011 ...SPECIAL WEATHER STATEMENT FOR FREMONT AND NORTHWESTERN PAGE COUNTIES UNTIL 600 AM CDT... AT 517 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM 7 MILES WEST OF HAMBURG...OR 24 MILES NORTHWEST OF TARKIO...MOVING NORTHEAST AT 35 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... HAMBURG... SIDNEY... RIVERTON... FARRAGUT... SHENANDOAH... ESSEX... WAUBONSIE STATE PARK... PIERCE RECREATION AREA... IMOGENE... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. NIETFELD
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 526 AM CDT SUN MAY 29 2011 NEZ091>093-291115- NEMAHA NE-PAWNEE NE-RICHARDSON NE- 526 AM CDT SUN MAY 29 2011 ...SPECIAL WEATHER STATEMENT FOR NORTHWESTERN RICHARDSON...EASTERN PAWNEE AND NEMAHA COUNTIES UNTIL 615 AM CDT... AT 521 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM NEAR PAWNEE CITY...OR 31 MILES WEST OF FALLS CITY...MOVING NORTHEAST AT 45 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... HUMBOLDT... JOHNSON... AUBURN... PERU... 8 MILES SOUTH OF JOHNSON... 7 MILES SOUTH OF AUBURN... NEMAHA... BROWNVILLE... BROWNVILLE STATE RECREATION AREA... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. NIETFELD
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 558 AM CDT SUN MAY 29 2011 IAZ080-091-291145- MONTGOMERY IA-PAGE IA- 558 AM CDT SUN MAY 29 2011 ...SPECIAL WEATHER STATEMENT FOR SOUTHERN MONTGOMERY AND PAGE COUNTIES UNTIL 645 AM CDT... AT 555 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING STRONG THUNDERSTORMS CENTERED ABOUT 6 MILES SOUTH OF SHENANDOAH...OR 16 MILES NORTH OF TARKIO...MOVING NORTHEAST AT 30 MPH. HAIL UP TO THE SIZE OF NICKELS MAY OCCUR WITH THESE STORMS. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE... SHENANDOAH... COIN... ESSEX... CLARINDA... STANTON... VILLISCA... YORKTOWN... SHAMBAUGH... HEPBURN... VIKING LAKE STATE PARK... MILLER
The Omaha radar (KOAX), 12 km away, was scanning. The volume nearest the first event began at 11:56 UTC.
3 hail. Local standard time, as filed.
An off duty NWS employee reported that a few hailstones around half dollar-size fell in the Elkhorn area.
A few pieces of very transparent hail around dime-size fell at the NWS office near Valley.
Penny to nickel-size hail fell across parts of Omaha, mainly the northwest section, from around 90th and Fort Streets to the Florence area.
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, May 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: 294368, 294366, 294369.