Heavy rainfall from thunderstorms caused flash flooding in Montello.
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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 LKN wrote it up.
Heavy rainfall from thunderstorms caused flash flooding in Montello.
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 Elko, NV wrote its last area forecast discussion before the first event at Jul 22, 2:27 PM PST, 33 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ELKO NV 327 PM PDT SUN JUL 22 2012 .SYNOPSIS...ISOLATED THUNDERSTORMS HAVE ALREADY DEVELOPED TODAY OVER CENTRAL AND EASTERN NEVADA. MORE THUNDERSTORMS ARE EXPECTED THIS EVENING. ANOTHER ROUND OF THUNDERSTORM ACTIVITY EXPECTED MONDAY AND TUESDAY AFTERNOONS. && .SHORT TERM...THE REMAINDER OF TODAY THROUGH TUESDAY...THE UPPER LEVEL PATTERN FEATURES A HIGH PRESSURE ANCHORED OVER THE CENTRAL PLAINS...A DEEP LOW MOVING INTO WASHINGTON STATE AND A SHORTWAVE OFF THE CALIFORNIA COAST. THE NAM12 CONTINUES TO PROJECT WIDESPREAD AREAS OF NEGATIVE LIFTED INDICES AND CAPES ABOVE 500 J/KG THIS FORECAST PERIOD. THE PWS ARE SHEEPISH OVER THE CENTRAL ZONES...RANGING FROM .40 TO .50 OF AN INCH. HOWEVER...ALONG THE UTAH/NEVADA BORDER AND NORTHERN NYE COUNTY...THE NAM HAS THE PWS RANGING BETWEEN .75 TO .95 OF AN INCH THIS EVENING. PROGGED SOUNDINGS DEPICT CLASSIC INVERTED V SOUNDING FOR ELY WITH BASES NEAR 570 MB...A DEEP LAYER OF MOISTURE...AND CONVECTIVE TEMPS NEAR 86F. MEANWHILE...THE ELKO SOUNDING HAS BASES NEAR 530 MB...A MUCH MORE SHALLOW LAYER OF MIDLEVEL MOISTURE AND CONVECTIVE TEMP OF 91F. THE MODEL DATA AND THE SATELLITE IMAGERY CLEARLY DEPICT A WELL DEFINED MOISTURE GRADIENT. ISOLATED TO SCATTERED THUNDERSTORMS POSSIBLE THE TOMORROW AND TUESDAY AFTERNOONS. .LONG TERM...TUESDAY NIGHT THROUGH NEXT SUNDAY. MODELS ARE IN DECENT AGREEMENT. THERE ARE SOME FEATURE POSITIONING ISSUES CONTINUING TO ARISE IN THE LATTER PART OF THE MODEL RUNS. THE GFS MODEL HAS INCHED TOWARD THE ECMWF DRIER SOLUTION. BY TUESDAY NIGHT A SUBSTANTIAL RIDGE OVER THE GREAT PLAINS WILL BE IN TRANSITION...RE-CENTERING BACK TOWARDS AZ AND UT. AN UPPER LOW PRESSURE SYSTEM MOVE ALONG THE U.S./CANADA BORDER...AND PLUNGE INTO THE NORTHEAST U.S. BY THURSDAY. THIS IS A 24 HOUR FASTER SOLUTION CONCERNING THIS FEATURE WHICH SHOULD ALLOW FOR QUICKER AMPLIFICATION OF THE NEXT RIDGE. WITH THE GFS TREND TOWARD THE ECMWF...A DRIER SOLUTION FOR LATE NEXT WEEK IS IN THE WORKS AS HIGH PRESSURE IS EXPECTED TO RE-CENTER EAST OF THE 4-CORNERS REGION. REMOVED MENTION OF THUNDERSTORMS TUESDAY NIGHT...MADE ONLY MINOR CHANGES TO DRY/WET THUNDERSTORM COVERAGE WEDNESDAY...AND ADDED NOCTURNAL TS FOR WEDNESDAY NIGHT. COULD NOT READ IN ENOUGH CONSISTENCY TO ADJUST TS COVERAGE IN SUBSEQUENT PERIODS HOWEVER INDICATIONS ARE AN EASTWARD TREND WITH LESSENING COVERAGE THROUGH NEXT WEEKEND AS THE PREVIOUS FORECAST DEPICTS. HIGH TEMPERATURES WILL GENERALLY BE IN THE LOW TO MID 90S...WITH THE EXCEPTION OF WHITE PINE COUNTY WHERE DAILY THUNDERSTORM CHANCES MAY LIMIT HIGHS TO THE UPPER 80S. LOWS WILL BE IN THE 50S. && .AVIATION...VFR CONDITIONS ARE EXPECTED AT KWMC KEKO KELY AND KTPH THROUGH MONDAY AFTERNOON. THUNDERSTORMS ARE EXPECTED ACROSS MOST OF NEVADA THROUGH EARLY SUNDAY EVENING...AND AGAIN MONDAY AFTERNOON AND EVENING. KEKO KELY AND KTPH WILL MOST LIKELY BE AFFECTED THROUGH THIS EVENING...AND AGAIN MONDAY AFTERNOON AND EVENING. WINDS EMANATING FROM THUNDERSTORMS WILL BE GUSTY TO AROUND 40 KTS. && .FIRE WEATHER...THUNDERSTORMS HAVE ALREADY DEVELOPED TODAY...PROVING TO BE A MIX OF DRY AND WET CELLS. THE MAIN FOCUS OF THUNDERSTORM ACTIVITY HAS BEEN FROM JACKPOT TO EUREKA NEVADA. MORE CONVECTION EXPECTED THIS EVENING. THUNDERSTORMS WILL REDEVELOP MONDAY AND TUESDAY AFTERNOONS. && .LKN WATCHES/WARNINGS/ADVISORIES... RED FLAG WARNING UNTIL 9 PM PDT THIS EVENING FOR HUMBOLDT COUNTY...NORTHERN ELKO COUNTY. RED FLAG WARNING UNTIL 9 PM PDT THIS EVENING FOR NORTHEASTERN NYE COUNTY...NORTHERN LANDER COUNTY AND NORTHERN EUREKA COUNTY... NORTHWESTERN NYE COUNTY...SOUTHERN LANDER COUNTY AND SOUTHERN EUREKA COUNTY. && 97/92/92/97
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ELKO NV 322 AM PDT SUN JUL 22 2012 NVZ030-031-231030- HUMBOLDT COUNTY-NORTHERN ELKO COUNTY- 322 AM PDT SUN JUL 22 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST NEVADA AND NORTHWEST NEVADA. .DAY ONE...TODAY AND TONIGHT. WINDS AND LOW HUMIDITIES WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO SIGNIFICANT WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ASKED TO REPORT WEATHER PHENOMENA ACCORDING TO STANDARD OPERATING PROCEDURE. NVZ036-037-040-041-231030- NORTHERN LANDER COUNTY AND NORTHERN EUREKA COUNTY- SOUTHERN LANDER COUNTY AND SOUTHERN EUREKA COUNTY- NORTHWESTERN NYE COUNTY-NORTHEASTERN NYE COUNTY- 322 AM PDT SUN JUL 22 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL NEVADA AND SOUTH CENTRAL NEVADA. .DAY ONE...TODAY AND TONIGHT. ISOLATED TO SCATTERED DRY THUNDERSTORMS COMBINED WITH GUSTY OUTFLOW WINDS WILL CREATE CRITICAL FIRE WEATHER CONDITIONS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. ISOLATED TO SCATTERED THUNDERSTORMS THROUGH MID WEEK WITH GUSTY OUTFLOW WINDS...BUT EXPECT WET THUNDERSTORMS...SO DO NOT ANTICIPATE CRITICAL FIRE WEATHER CONDITIONS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ASKED TO REPORT WEATHER PHENOMENA ACCORDING TO STANDARD OPERATING PROCEDURE.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ELKO NV 1249 PM PDT SUN JUL 22 2012 NVZ035-037-041-222030- NORTHEASTERN NYE COUNTY NV-SOUTHERN LANDER COUNTY AND SOUTHERN EUREKA COUNTY NV-WHITE PINE COUNTY NV- 1249 PM PDT SUN JUL 22 2012 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN EUREKA...NORTHERN NYE AND EXTREME WESTERN WHITE PINE COUNTIES UNTIL 130 PM PDT... AT 1240 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 20 MILES SOUTH OF PINTO SUMMIT. THIS STORM WAS MOVING NORTHEAST AROUND 10 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. * LOCATIONS IMPACTED INCLUDE... SOUTHWEST EUREKA COUNTY... SOUTHEAST WHITE PINE COUNTY... && LAT...LON 3936 11611 3925 11578 3898 11612 3903 11624 TIME...MOT...LOC 1945Z 180DEG 0KT 3916 11606 LW
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ELKO NV 124 PM PDT SUN JUL 22 2012 NVZ036-037-222115- NORTHERN LANDER COUNTY AND NORTHERN EUREKA COUNTY NV-SOUTHERN LANDER COUNTY AND SOUTHERN EUREKA COUNTY NV- 124 PM PDT SUN JUL 22 2012 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN LANDER AND WESTERN EUREKA COUNTIES UNTIL 215 PM PDT... AT 121 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 13 MILES SOUTHWEST OF GRASS VALLEY...MOVING NORTHEAST AT 10 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. * LOCATIONS IMPACTED INCLUDE... GRASS VALLEY... 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. && LAT...LON 4013 11672 3988 11636 3966 11678 3979 11695 TIME...MOT...LOC 2024Z 226DEG 8KT 3979 11678 PJS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ELKO NV 247 PM PDT SUN JUL 22 2012 NVZ034-039-222230- SOUTH CENTRAL ELKO COUNTY NV-SOUTHWEST AND SOUTH CENTRAL ELKO COUNTY NV- 247 PM PDT SUN JUL 22 2012 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ELKO COUNTY UNTIL 330 PM PDT... AT 245 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9 MILES SOUTHWEST OF RUBY VALLEY...MOVING NORTHEAST AT 10 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. * LOCATIONS IMPACTED INCLUDE... RUBY VALLEY...CLOVER VALLEY && LAT...LON 4093 11500 4074 11486 4060 11528 4074 11538 TIME...MOT...LOC 2146Z 227DEG 10KT 4069 11530
The Salt Lake City radar (KMTX), 156 km away, was scanning. The volume nearest the first event began at 23:00 UTC.
1 flash flood. Local standard time, as filed.
Flash flooding was reported in Montello. Report was received 3 days after the event and no additional information was given.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2012Every state in 2012This day in weather historyWarnings in Nevada, July 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: 390788.