A cold front pushing slowly to the southeast, was the focus for scattered thunderstorms, which brought some flash flooding, hail, and wind to the area.
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 LBF wrote it up.
A cold front pushing slowly to the southeast, was the focus for scattered thunderstorms, which brought some flash flooding, hail, and wind to the area.
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 Jul 22, 1:42 PM MST, 3 hours 40 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 342 PM CDT THU JUL 21 2010 .SYNOPSIS... UA ANALYSIS FROM THIS MORNING INDICATING A LOW AMPLITUDE TROUGH OF LOW PRESSURE ACROSS THE WRN CONUS...AND LOW AMPLITUDE RIDGING ACROSS THE EASTERN CONUS. H25 UA CHART HAD A NICE JET STREAK EXTENDING FROM SERN IDAHO...INTO THE GREAT LAKES. SURFACE ANALYSIS FROM THIS AFTERNOON INDICATED A WEAK FRONT EXTENDING FROM NERN NEBRASKA INTO SWRN NEBRASKA. TEMPERATURES WERE GENERALLY IN THE 80S WITH SOME LWR 90S EAST OF THE FRONT IN SERN NEBRASKA. && .DISCUSSION... SHORT TERM...TONIGHT THROUGH SUNDAY NIGHT...MAIN FORECASTING CHALLENGES FOR TONIGHT DEAL WITH PRECIPITATION CHANCES AND FLOODING POTENTIAL IN THE NORTHEAST. LOCATIONS OVER NRN HOLT AND BOYD COUNTIES SAW UPWARDS OF 5 INCHES OF RAINFALL LAST NIGHT WHICH PRODUCED WIDESPREAD FLOODING CONDS OVR THE SRN PORTIONS OF BOYD AND NORTHERN HOLT COUNTY. RAIN WILL BE POSSIBLE ONCE AGAIN IN THESE AREAS FOR TONIGHT AS A JET STREAK TRACKS ACROSS SOUTH DAKOTA THIS EVENING AND TONIGHT. LOW LEVEL JET AND SFC FOCUS WILL BE JUST OFF TO THE EAST SO HEAVIEST RAINFALL IS EXPECTED OVER ERN NEBR AND IOWA. LIGHTER RAIN ASSOCIATED WITH THE JET STREAK AND ELEVATED FRONT IS EXPECTED OVER NORTHERN NEBRASKA OVERNIGHT. NORMALLY WITH THIS SETUP...I WOULD NOT GET EXCITED ABOUT FLASH FLOODING POTENTIAL AS THE LOW LEVEL JET AND SURFACE FOCUS IS OFF TO THE EAST. HOWEVER...WITH FF GUIDANCE AON 0.50 INCHES/1 HR FOR TONIGHT...FEEL A WATCH IS WARRANTED HERE. WILL ISSUE THE WATCH FOR NRN HOLT...BOYD...KEYA PAHA AND ROCK COUNTIES...FOCUSING ON EASTERN KEYA PAHA...NERN ROCK...NRN HOLT AND BOYD COUNTY WHERE RADAR ESTIMATED RAINFALL RANGED FROM 3 TO 7 INCHES LAST NIGHT. ON FRIDAY...SURFACE LOW PRESSURE WILL DEEPEN OVER WESTERN NEBRASKA. A DRY LINE WILL EXTEND SOUTH FROM THIS FEATURE...WITH A FRONTAL BOUNDARY EXTENDING ACROSS NRN NEBRASKA. AS AN UPPER LEVEL TROUGH OF LOW PRESSURE LIFTS ACROSS THE NR TIER OF STATES FRIDAY...IT WILL FORCE THE FRONTAL BOUNDARY SOUTH AND SERVE AS A FOCAL POINT FOR THUNDERSTORMS DEVELOPMENT. FCST CAPE AND GREATEST INSTABILITY CONTINUE TO RESIDE OVER THE FAR NORTHEAST FOR TOMORROW AND TOMORROW NIGHT...SO WILL FOCUS HIGHEST POPS IN THESE AREAS. QPF'S COULD BE HIGH LIKE LAST NIGHT AS FCST PW'S WILL APPROACH 2 INCHES IN THESE AREAS. A FLOOD WATCH MAY BE NEEDED TOMORROW NIGHT IN THE NORTHEAST AS FF GUIDANCE IS EXPECTED TO BE LOW ONCE AGAIN. HAVE EXTENDED SOME LOWER POPS FURTHER SOUTHWEST AS THE DRY LINE WILL SURGE EAST. MOISTURE IS FAIRLY MEAGER AND SHEAR WEAKER...SO ONLY ISOLATED TSRAS EXPECTED. THE BEFORE MENTIONED FRONT WILL PUSH SOUTH INTO KANSAS FOR SATURDAY. HIGH PRESSURE BEHIND THE FRONT AND DRIER AIR SHOULD END THE THREAT FOR THUNDERSTORMS THIS WEEKEND. THETA E RIDGING WILL BUILD NWD INTO ERN COLORADO AND SUNDAY...ENHANCING CONVECTION OFF TO THE WEST. THIS WILL BE DIURNALLY DRIVEN AND WITH THE ABSENCE OF A LOW LEVEL JET...NOT EXPECTING TSRAS TO IMPACT THE CWA SUNDAY NIGHT. LONG TERM...MONDAY THROUGH THURSDAY... PATTERN ACROSS THE CONUS WILL BE SHIFTING SOMEWHAT THROUGH THE EXTENDED AND GUIDANCE SEEMS TO BE IN FAIR AGREEMENT IN THE LARGER SCALE CHANGES. THIS INVOLVES THE REPLACEMENT OF THE RATHER STRONG TROF OVER THE CANADIAN MARITIMES INTO THE NEW ENGLAND DURING THE EARLY TO MIDDLE PART OF NEXT WEEK...BY ANOTHER SYSTEM DROPPING INTO THE H.BAY REGION. AS THE LEAD TROF ROTATES INTO NW ATLANTIC...THE E.PAC TROF WILL ALSO BE WEAKENING...ALLOWING THE STRONG SOUTHEAST CONUS RIDGE TO EXPAND FARTHER INTO THE SOUTHERN HIGH PLAINS AND ROCKIES. THIS LOOKS TO FORCE THE MONSOON MOISTURE MORE INTO THE GREAT BASIN AND OVER THE NORTHERN ROCKIES...INSTEAD OF A MORE DIRECT FEED THROUGH THE 4 CORNERS...CENTRAL ROCKIES AND ADJACENT HIGH PLAINS. AS A RESULT FIRST PART OF EXTENDED FORECAST LOOKS TO BE FAIRLY DRY AND WITH THE SW UPPER FLOW SHIFTING TO THE WEST...THE SFC LOW LOOKS TO REFORM FARTHER UP THE HIGH PLAINS TOWARD THE BLACK HILLS ALLOWING THE SFC FRONT TO MOVE INTO THE DAKOTAS ALONG WITH THE RING OF FIRE. THE SFC LOW LOOKS TO EJECT ACROSS SD ON WEDNESDAY...A SIGNAL FOR A STRONG WARMUP OVER OUR CWFA AND KEPT TEMPS AOA HPC GUIDANCE. FROPA WED AFTERNOON LEADING TO UPSLOPE THROUGH FRIDAY WILL BRING THE BETTER CONVECTIVE CHANCES TO THE REGION WITH TEMPS MODERATING SOMEWHAT TO NEAR SEASONAL. && .AVIATION... STRATUS LIFTING AND MOVING OUT OF NORTH CENTRAL NEBRASKA...LEAVING VFR CONDITIONS IN PLACE. INSTABILITY DUE TO STRONG HEATING AND A VERY MOIST ATMOSPHERE WILL BRING ANOTHER ROUND OF CONVECTION ACROSS THE CENTRAL AND HIGH PLAINS. WITH THE WIDESPREAD INSTABILITY THUNDERSTORM FORMATION COULD OCCUR ABOUT ANYWHERE...BUT ATTM LOOKS TO BE FOCUSING ON A BOUNDARY FROM NW KANSAS INTO EASTERN IOWA. OTHER STORMS SHOULD ARRIVE FROM THE HIGH PLAINS INTO WESTERN NEBRASKA THROUGH THE LATE EVENING HOURS. WITH LOW CONFIDENCE OF STORMS IN VCNTY OF TERMINALS LEFT TSRA OUT OF FORECAST ATTM AND JUST PLACED CB MENTION. CONFIDENCE ALSO LOW IN STRATUS FORMATION OVERNIGHT BUT GUIDANCE AND CROSS SECTIONS DO NOT LEAN IN THIS DIRECTION ATTM SO HAVE LEFT VFR CONDITIONS THROUGH REMAINDER OF FORECAST. && .LBF WATCHES/WARNINGS/ADVISORIES...FLOOD WATCH ZONES NEZ006-007-009-010 TONIGHT THROUGH FRIDAY NIGHT. .SHORT AND LONG TERM...BUTTLER .AVIATION...DP
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORTH PLATTE NE 350 PM CDT THU JUL 22 2010 NEZ004>010-022>029-035>038-056>059-069>071-094-232100- 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- 350 PM CDT THU JUL 22 2010 /250 PM MDT THU JUL 22 2010/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA. .DAY ONE...TONIGHT. SCATTERED THUNDERSTORM DEVELOPMENT IS EXPECTED AGAIN THROUGH THE EVENING AND EARLY MORNING HOURS ACROSS MUCH OF WESTERN AND NORTH CENTRAL NEBRASKA. STORMS ARE EXPECTED TO MOVE OUT OF THE HIGH PLAINS INTO PORTIONS OF WESTERN NEBRASKA...WHILE A BOUNDARY EXTENDING OVER PORTIONS OF SOUTHWEST AND CENTRAL NEBRASKA SHOULD SERVE AS ANOTHER FOCUS FOR THUNDERSTORM DEVELOPMENT. ISOLATED SEVERE WEATHER DEVELOPMENT...INCLUDING LARGE HAIL AND DAMAGING WINDS...IS POSSIBLE ACROSS MUCH OF THE OUTLOOK AREA...HOWEVER THE MAIN THREAT CONTINUES TO BE VERY HEAVY RAINFALL. PORTIONS OF NORTH CENTRAL NEBRASKA HAVE RECEIVED UP TO NEARLY 8 INCHES OF RAIN IN THE PAST 24 HOURS AND FLOODING IS OCCURRING. ANY ADDITIONAL RAINFALL WILL QUICKLY TURN TO RUNOFF IN THIS AREA AND FLASH FLOODING WILL CONTINUE TO BE A THREAT...ESPECIALLY EAST OF OF HIGHWAY 11. A FLASH FLOOD WATCH IS IN EFFECT FOR THESE AREAS THROUGH SATURDAY MORNING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. ON FRIDAY...A DRYLINE WILL ADVANCE ACROSS WESTERN NEBRASKA...WITH A WARM FRONT EXTENDING TO THE EAST ACROSS EASTERN PORTIONS OF THE OUTLOOK AREA. SCATTERED THUNDERSTORMS CONTAINING LARGE HAIL AND DAMAGING WINDS ARE AGAIN POSSIBLE ACROSS MUCH OF THE OUTLOOK AREA. THE AREA OF GREATER CONCERN WILL BE EAST OF A VALENTINE THROUGH BROKEN BOW LINE...WHERE AN ADDITIONAL RISK FOR AN ISOLATED TORNADO EXISTS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING. && THIS PRODUCT IS NOW AVAILABLE...ALONG WITH OTHER WEATHER... HYDROLOGICAL AND CLIMATOLOGICAL INFORMATION...AT HTTP://WWW.WEATHER.GOV/NORTHPLATTE 13
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
331 PM CDT THU JUL 22 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0330 PM FLASH FLOOD LYNCH 42.83N 98.47W
07/22/2010 BOYD NE CO-OP OBSERVER
SEWAGE PLANT IN LYNCH WAS OFFLINE FROM MIDNIGHT CDT
THROUGH 200 PM CDT JULY 22ND...DUE TO TOO MUCH RAINFALL
OVERNIGHT. AN AUXILIARY PUMP WAS UTILIZED TO PUMP THE
EXCESS WATER AND THE SEWAGE PLANT IS BACK IN OPERATION.
LEVEL OF PONCA CREEK NEAR LYNCH HAS DROPPED IN HALF.
&&
CARMELThe Rapid City radar (KUDX), 144 km away, was scanning. The volume nearest the first event began at 00:21 UTC.
4 thunderstorm wind, 1 hail. Local standard time, as filed.
Thunderstorms produced severe criteria wind gusts to the north of the Hay Springs area.
Thunderstorm wind gusts produced some minor structural and roof damage in the Rushville area.
A wet microburst occured in the Rushville area causing roof and powerline damage.
Thunderstorms produced severe criteria wind gusts southwest of the Merriman area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2010Every state in 2010This day in weather historyWarnings in Nebraska, July 2010
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: 243626, 243618, 243631, 243614, 243616.