Isolated thunderstorms developed along a surface trough during the late afternoon and early evening hour across Chase and Hayes county, producing large hail and 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 LBF wrote it up.
Isolated thunderstorms developed along a surface trough during the late afternoon and early evening hour across Chase and Hayes county, producing large hail and 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 North Platte, NE wrote its last area forecast discussion before the first event at Aug 7, 1:07 PM MST, 2 hours 53 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 307 PM CDT TUE AUG 7 2012 .SYNOPSIS... UPPER AIR ANALYSIS THIS MORNING...AND WV IMAGERY...IS INDICATING A COUPLE OF DISTURBANCES ACROSS THE CENTRAL AND NORTHERN PLAINS. THE FIRST WAS APPROACHING THE BLACK HILLS OF SOUTH DAKOTA AND ANOTHER DISTURBANCE WAS CROSSING CENTRAL MONTANA. BOTH DISTURBANCES WERE TRACKING ALONG THE NORTHERN PERIPHERY OF A LARGE UPPER LEVEL HIGH...LOCATED OVER THE FOUR CORNERS REGION. FURTHER EAST...A PERSISTENT TROUGH OF LOW PRESSURE EXTENDED FROM EASTERN CANADA INTO NORTHERN NEW ENGLAND. AT THE SURFACE...A WEAK FRONTAL BOUNDARY EXTENDED FROM WESTERN KANSAS...INTO FAR SERN NEBRASKA. ISOLATED SHOWERS WITH EMBEDDED THUNDERSTORMS WERE PRESENT ACROSS A LARGE PORTION OF WESTERN NEBRASKA THIS AFTERNOON. UNDER PARTLY TO MOSTLY CLOUDY SKIES...2 PM CDT TEMPERATURES WERE IN THE UPPER 80S AND LOWER 90S. && .DISCUSSION... NEAR TERM...TONIGHT THROUGH FRIDAY...MAIN FORECASTING CHALLENGES DEAL WITH PRECIPITATION CHANCES TONIGHT...THEN TEMPERATURES FOR WEDNESDAY THROUGH FRIDAY. FOR TONIGHT...AN UPPER LEVEL DISTURBANCE WILL TRACK SOUTHEAST OF THE BLACK HILLS THIS EVENING...INTO CENTRAL AND EASTERN NEBRASKA. ISOLATED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE...MAINLY THIS EVENING...WITH SOME LIMITED CHANCES OVERNIGHT IN THE EAST. WITH FAIRLY WEAK BULK SHEAR OF 20 TO 25 KTS...THE SEVERE THREAT WILL BE LOW. WITH INVERTED V SOUNDINGS NOTED THIS MORNING...THE STRONGER STORMS MAY BE CAPABLE OF PRODUCING GUSTY WINDS PRIMARILY THIS EVENING. THE THUNDERSTORM THREAT WILL SHIFT INTO EASTERN AND SOUTHERN NEBRASKA OVERNIGHT AS THE UPPER LEVEL DISTURBANCE TRACKS INTO CENTRAL AND EASTERN NEBRASKA. BEYOND TONIGHT...THE MAIN FORECASTING CHALLENGE WILL BE TEMPERATURES THURSDAY AND FRIDAY AND THE HOW FAR WEST...COOLER AIR CAN BACK INTO THE FORECAST AREA FROM THE EAST. IN THE MEANTIME...HOT TEMPERATURES LOOK PROBABLE ON WEDNESDAY AS THE UPPER LEVEL HIGH BUILDS NORTH INTO THE CENTRAL ROCKIES WITH INCREASING HTS NOTED ACROSS WESTERN NEBRASKA. H85 TEMPS WILL RANGE FROM 25C IN THE EAST...TO 31C IN THE WEST...SO AM EXPECTING WIDESPREAD HIGHS IN THE 90S WEDNESDAY. DRIER AIR WILL PUSH INTO THE FORECAST AREA...AS NORTHERLY WINDS DEVELOP TOMORROW. THIS MAY PUSH FIRE DANGER TO NEAR CRITICAL LEVELS FOR A BRIEF PERIOD WEDS AFTERNOON. WITH NO THREAT FOR DRY LIGHTNING TOMORROW AFTERNOON...WOULD LIKE TO SEE HIGHER WINDS AND SLIGHTLY LOWER RH'S BEFORE ISSUING A FIRE WEATHER WATCH. WILL CONTINUE TO HIT THIS IN THE HWO THOUGH AS EXTREME FIRE DANGER IS EXPECTED TOMORROW AFTERNOON. ON WEDNESDAY NIGHT...A FAIRLY SIGNIFICANT UPPER LEVEL TROUGH OF LOW PRESSURE WILL TRACK FROM THE ARROW HEAD OF MINNESOTA INTO NRN ILLINOIS ON THURSDAY. AS THIS FEATURE TRACKS ALONG THIS PATH...NORTHEASTERLY...THEN EASTERLY WINDS WILL PUSH INTO EASTERN AND CENTRAL NEBRASKA THURSDAY AND FRIDAY...AS A WEAK COOL FRONT BACKS WEST INTO THE FORECAST AREA. FOR EASTERN AREAS...HIGHS THURSDAY AND FRIDAY...WILL BE IN THE 80S...WHILE IN THE WEST...HIGHS WILL REACH THE 90S. LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...THE LATEST LONG RANGE SOLNS...ARE HINTING AT A SLIGHT PATTERN SHIFT TOWARD EARLY NEXT WEEK WITH THE UPPER LEVER HIGH BEING SUPPRESSED INTO SRN NM...SRN AZ AND WRN TX. THIS SHIFT WOULD RESULT IN A MORE ACTIVE PATTERN IN THE LATTER HALF OF THE EXTENDED...WITH THE POSSIBILITY OF RAIN MONDAY NIGHT INTO TUESDAY...AND WENT WITH SOME LOW POPS FOR THOSE PERIODS. TEMPS WILL COOL AS WELL...WITH HIGHS IN THE 80S TO LOWER 90S EXPECTED FOR DAYS 5 THROUGH 7. && .AVIATION... CONVECTIVE SHRAS AND TSRAS ARE POSSIBLE THROUGH MID EVENING ACROSS PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA...OR EAST OF A MERRIMAN TO KIML LINE. CIGS IN THE VICINITY OF TSRAS MAY DROP AS LOW AS 6000 FT AGL WITH VARIABLE WIND GUSTS TO 35 KTS. IN THE ABSENCE OF THUNDERSTORMS...SCATTERED TO BROKEN CLOUDINESS AOA 10000 FT AGL IS POSSIBLE THROUGH LATE EVENING...WITH CLEAR SKIES EXPECTED THERE AFTER. LIGHT AND VARIABLE WINDS TONIGHT...WILL BECOME NORTHERLY AT 10 TO 20 KTS WEDNESDAY AND WEDNESDAY AFTERNOON. .LBF WATCHES/WARNINGS/ADVISORIES...NONE. SYNOPSIS...SHORT AND LONG TERM...BUTTLER AVIATION...JWS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORTH PLATTE NE 316 PM CDT TUE AUG 7 2012 NEZ004>010-022>029-035>038-056>059-069>071-094-082030- SHERIDAN-EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-GARDEN- GRANT-HOOKER-THOMAS-BLAINE-LOUP-GARFIELD-WHEELER-ARTHUR-MCPHERSON- LOGAN-CUSTER-DEUEL-KEITH-PERKINS-LINCOLN-CHASE-HAYES-FRONTIER- WESTERN CHERRY- 316 PM CDT TUE AUG 7 2012 /216 PM MDT TUE AUG 7 2012/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA. .DAY ONE...TONIGHT. ISOLATED TO SCATTERED THUNDERSTORMS WILL MOVE ACROSS PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA TONIGHT...MAINLY ALONG AND SOUTH OF HIGHWAY 2. ALTHOUGH WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...A FEW STRONG STORMS WILL BE CAPABLE OF PRODUCING HEAVY RAIN...HAIL TO PENNY SIZE AND GUSTY WINDS TO 50 MPH. IN ADDITION...WITH DRY PASTURES AND RANGELANDS ACROSS THE AREA...LIGHTNING MAY CAUSE FIRE STARTS AS WELL THROUGH 11 PM CDT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NEAR CRITICAL FIRE WEATHER CONDITIONS WILL BE IN PLACE ACROSS WESTERN AND NORTH CENTRAL NEBRASKA ON WEDNESDAY...WITH RELATIVE HUMIDITY VALUES FALLING TO 15 TO 20 PERCENT BY AFTERNOON AS TEMPERATURES CLIMB INTO THE 90S TO AROUND 100. NORTHWEST WINDS UP TO 20 MPH WILL BE COMMON AS WELL THROUGH LATE AFTERNOON. THE NEXT CHANCE FOR THUNDERSTORMS WILL BE FRIDAY NIGHT INTO SATURDAY ACROSS THE AREA. AGAIN...WIDESPREAD SEVERE WEATHER IS NOT EXPECTED. THUNDERSTORMS WILL BE POSSIBLE AGAIN SUNDAY NIGHT IN THE EASTERN PANHANDLE...AND AGAIN ACROSS THE AREA TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT. && THIS PRODUCT IS NOW AVAILABLE...ALONG WITH OTHER WEATHER... HYDROLOGICAL AND CLIMATOLOGICAL INFORMATION...AT HTTP://WWW.WEATHER.GOV/NORTHPLATTE JWS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 236 PM CDT TUE AUG 7 2012 NEZ022-072015- GARDEN NE- 136 PM MDT TUE AUG 7 2012 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL GARDEN COUNTY UNTIL 215 PM MDT... AT 132 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES EAST OF RICHARDSON LAKE...OR 18 MILES NORTH OF OSHKOSH...MOVING SOUTHEAST AT 25 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING. THIS STORM WILL BE NEAR CRESCENT LAKE WILDLIFE REFUGE THROUGH 150 PM MDT. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. STOPPKOTTE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 444 PM CDT TUE AUG 7 2012 NEZ058-069-072230- CHASE NE-PERKINS NE- 344 PM MDT TUE AUG 7 2012 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN PERKINS AND NORTHWESTERN CHASE COUNTIES UNTIL 430 PM MDT... AT 341 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR VENANGO...OR 16 MILES WEST OF GRANT...MOVING SOUTHEAST AT 10 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... LAMAR... HIGHWAY 6 MILE MARKER 10... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. BUTTLER
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 357 PM MDT TUE AUG 7 2012 NEZ069-070-072245- CHASE NE-HAYES NE- 457 PM CDT TUE AUG 7 2012 ...SIGNIFICANT WEATHER ADVISORY FOR HAYES AND SOUTHEASTERN CHASE COUNTIES UNTIL 545 PM CDT/445 PM MDT/... AT 455 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES WEST OF HAYES CENTER...MOVING SOUTH AT 5 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... HAYES CENTER... WAUNETA... HAMLET... HIGHWAY 25 MILE MARKER 30... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. BUTTLER
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 529 PM CDT TUE AUG 7 2012 NEZ094-072315- WESTERN CHERRY NE- 429 PM MDT TUE AUG 7 2012 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHERRY COUNTY UNTIL 515 PM MDT... AT 428 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES WEST OF MERRIMAN...OR 20 MILES EAST OF GORDON...MOVING SOUTHEAST AT 20 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... MERRIMAN... HIGHWAY 61 CROSSING THE NIOBRARA RIVER... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. BUTTLER
The Goodland radar (KGLD), 128 km away, was scanning. The volume nearest the first event began at 22:59 UTC.
2 thunderstorm wind, 1 hail. Local standard time, as filed.
Cooperative observer reported a power pole was broken in half in Imperial. Power outages continue for the city of Imperial. Power was also lost at the automated surface observing station at the Imperial Airport.
General public reported thunderstorm wind gusts estimated 50 to 60 mph as a thunderstorm passed through Imperial.
Hail covered the ground white.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2012Every state in 2012This day in weather historyWarnings in Nebraska, August 2012
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: 401662, 401674, 401671.