Heavy rainfall occurred across the eastern Sierra and western Nevada.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 REV wrote it up.
Heavy rainfall occurred across the eastern Sierra and western Nevada.
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 Reno, NV wrote its last area forecast discussion before the first event at Aug 31, 1:00 PM PST, 3 hours 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RENO NV 200 PM PDT FRI AUG 31 2007 .SHORT TERM... STATIONARY CONVERGENCE ZONE SET UP ACROSS THE SIERRA NEAR TAHOE INTO WESTERN NV THIS MORNING BETWEEN STRONG HIGH PRESSURE ACROSS THE SOUTHWEST AND A SHORTWAVE MOVING INTO PACNW COAST. THIS HAS RESULTED IN AREAS OF STRONG THUNDERSTORMS ALONG AND NORTH OF INTERSTATE 80 WHERE BEST HEATING HAS OCCURRED. EXPECT SCATTERED THUNDERSTORMS TO CONTINUE NORTH OF INTERSTATE 80 THROUGH THIS EVENING WITH ISOLATED STRONG STORMS PRODUCING LOCALLY HEAVY RAIN AND POSSIBLY SOME HAIL. WILL HAVE TO WATCH FOR TRAINING CELLS THAT COULD PRODUCE FLASH FLOOD CONDITIONS IN STEEPER TERRAIN. ELSEWHERE ACROSS NORTHEAST CA AND WESTERN NEVADA ISOLATED TO WIDELY SCATTERED THUNDERSTORMS WILL CONTINUE THROUGH THIS EVENING. 12Z SOUNDING FROM RENO THIS MORNING INDICATED VERY UNSTABLE AND MOIST AIRMASS. UPPER WINDS HAVE INCREASED SO THUNDERSTORM MOVEMENT HAS BEEN FAIRLY UNIFORM AROUND 20KT FROM THE SOUTHWEST. EVEN WITH MODERATE MOVEMENT OF THUNDERSTORMS THIS AFTERNOON AND EVENING...EXPECT STRONGER STORMS TO PRODUCE LOCALLY BRIEF HEAVY RAIN. WILL CLOSELY MONITOR HAWKINS AND ANGORA FIRE BURN AREAS FOR FLASH FLOODING POTENTIAL WHERE LESS THAN ONE THIRD INCH IN AN HOUR COULD CAUSE PROBLEMS. FOR SATURDAY SOUTHWEST WINDS ALOFT ARE STRONG ENOUGH NORTH OF TAHOE/RENO AND INTERSTATE 80 TO LIMIT CONVECTION TO MAINLY TO THE SOUTH AND EAST OF I-80 AND SOUTH OF TAHOE...WHERE WEAKER WINDS ALOFT WILL COMBINE WITH CONTINUED MODERATE INSTABILITY AND AMPLE MOISTURE FOR AT LEAST ISOLATED CONVECTION. SUNDAY AND MONDAY CONVECTION SHOULD BE LIMITED TO THE MONO-MINERAL CONVERGENCE ZONE AS DRIER SOUTHWEST FLOW ALOFT SPREADS SOUTH ALONG THE SIERRA AND ACROSS MUCH OF WESTERN NV. MONDAY A DEEP TROUGH APPROACHES THE WEST COAST WHICH WILL RESULT IN GUSTY WINDS ALONG NORTH OF INTERSTATE 80 AND MORE STABLE...DRY CONDITIONS IN THAT AREA. TEMPERATURES WILL REMAIN WELL ABOVE NORMAL THROUGH MONDAY BEFORE COOLING ON TUESDAY. WHILE OVERNIGHT LOWS WILL VARY FROM 5 TO 12 DEGREES ABOVE NORMAL FOR THIS TIME OF YEAR...DAYTIME HIGHS WILL REMAIN A GOOD 10 DEGREES ABOVE NORMAL VALUES FOR EARLY SEPTEMBER. JAH .LONG TERM...TUESDAY THROUGH FRIDAY... DRY COLD FRONT PASSAGE STILL ON TRACK FOR TUESDAY ALTHOUGH LATEST MEDIUM RANGE GUIDANCE POINTS TOWARD A MORE MODEST AND SHORT LIVED COOLING AS CENTER OF UPR LOW FILLS AS IT MOVES ACROSS THE NWRN US...WITH RIDGE REBUILDING OFF THE WEST COAST AND SPREADING INTO CA-NV BY LATE NEXT WEEK. NO PRECIP IS EXPECTED DURING THE EXTENDED PERIOD. TEMPS WILL BEGIN TO DECREASE ON TUESDAY AS FRONT APPROACHES AND MOVES THRU THE REGION WITH WIND GUSTS LIKELY REACHING OR EXCEEDING 30 MPH IN MOST AREAS. WEDNESDAY SHOULD BE THE COOLEST DAY NEXT WEEK WITH LIGHT NE-E FLOW KEEPING VALLEY TEMPS IN THE MID-UPR 80S. A GRADUAL WARMING TREND WILL THEN RESUME WITH MAX TEMPS REBOUNDING TO THE LOWER 90S IN THE VALLEYS BY FRIDAY. LIGHT FLOW ALOFT AND DAYTIME HEATING WILL LEAD TO AFTERNOON CU BUILDUPS IN THE MINERAL-MONO CONVERGENCE ZONES BOTH THURS-FRI. INSTBY LOOKS MARGINAL FOR TSTM FORMATION SO THE FORECAST IN THESE AREAS WILL REMAIN DRY FOR NOW. MJD && .AVIATION... SHRA/TSRA WITH OCNL MVFR CIGS/VSBY WILL CONTINUE THRU 03Z WITH BRIEF IFR PSBL IN CORES OF STRONGER CELLS WITH CONVECTIVE OUTFLOW GUSTS TO 35 KT. AFT 03Z...VFR CONDS WITH LIGHT WINDS WILL PREVAIL THRU SAT MORNING. ISOLD SHRA/TSRA AFT 20Z SAT E OF KTVL-KRNO-GERLACH LINE WITH OUTFLOW GUSTS TO 35 KT AND OCNL MVFR CIGS/VSBY. MJD && .FIRE WEATHER... THUNDERSTORMS THROUGH TONIGHT WILL BE WET...HOWEVER STORM MOTION OF 20-25 MPH WILL ALLOW FOR LIGHTNING STRIKES AND POTENTIAL FIRE STARTS AWAY FROM THE CORES OF THE STORMS. THERE HAS BEEN QUITE A BIT OF TRAINING OF STORMS OVER MANY AREAS...SO THE FEELING STILL IS THAT MOST FIRE STARTS WILL RECEIVE RAINFALL AMOUNTS OF .05-.15 INCHES THROUGH TONIGHT. COVERAGE OF TSTMS IS EXPECTED TO REMAIN ISOLATED WHICH WILL LESSEN THE FIRE WEATHER THREAT SOMEWHAT. DRY SOUTHWEST FLOW MOVES ACROSS THE AREA NORTH OF HIGHWAY 50 THIS WEEKEND BRINGING LOWER DAYTIME HUMIDITIES AND FAIR TO POOR HUMIDITY RECOVERIES. GUSTY AFTERNOON BREEZES WILL ALSO DEVELOP...BUT WITH 700 MB FLOW AROUND 20 KTS AND SIMILAR TODAY...FEEL THAT GUSTS WILL GENERALLY BE IN THE 25-30 MPH RANGE WITH ONLY ISOLATED WIND PRONE AREAS COMING CLOSE TO RED FLAG. SUNDAY THE 700 MB FLOW AND SURFACE GRADIENT ACTUALLY RELAXES A LITTLE FOR SLIGHTLY LESS WIND. THE MAIN CONCERN WILL BE MONDAY AND MONDAY NIGHT AS FAR AS WIND AND HUMIDITY. A STRONG LOW PRESSURE SYSTEM WILL APPROACH THE PAC NW COAST ON MONDAY WITH STRENGTHENING SURFACE GRADIENT AND 700 MB WINDS NEAR 30 KTS. STRONG HEATING AND MIXING SHOULD TAKE PLACE WITH WINDS BECOMING STRONG IN THE AFTERNOON. HUMIDITIES SHOULD STILL REMAIN BELOW 15 PERCENT AT LEAST IN THE RENO/CARSON CITY AREAS AND UP INTO NRN WASHOE COUNTY. THE SPEED OF THE TROUGH WILL DETERMINE HOW FAST THE HUMIDITY COMES UP FROM TAHOE INTO LASSEN COUNTY...BUT ALL ZONES NORTH OF HIGHWAY 50 COULD POTENTIALLY SEE RED FLAG CONDITIONS. WATCHES MAY NEED TO BE ISSUED OVER THE WEEKEND. WINDS WILL LIKELY REMAIN GUSTY OVERNIGHT MONDAY AS THE TROUGH MOVES THROUGH. BENINATO && .REV WATCHES/WARNINGS/ADVISORIES... NV...NONE. CA...NONE. && HTTP://WEATHER.GOV/RENO
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RENO NV 1209 PM PDT FRI AUG 31 2007 CAZ072-NVZ002-003-312000- GREATER LAKE TAHOE AREA-GREATER RENO-CARSON CITY-MINDEN AREA- 1209 PM PDT FRI AUG 31 2007 ...MORE RAIN AND THUNDERSTORMS FOR LAKE TAHOE AND PARTS OF WESTERN NEVADA... AT 1215 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING AN AREA OF RAIN WITH EMBEDDED THUNDERSTORMS ACROSS THE SOUTH AND EAST PORTIONS OF THE LAKE TAHOE BASIN...NORTHERN ALPINE COUNTY...MUCH OF DOUGLAS COUNTY...MOVING NORTHEAST AT 20 MPH. OCCASIONAL LIGHTNING...MODERATE RAIN WITH RAINFALL AMOUNTS BETWEEN ONE TENTH AND ONE QUARTER INCH...AND REDUCED VISIBILITIES TO LESS THAN THREE MILES AT TIMES...ARE EXPECTED WITH THIS AREA OF RAIN AND THUNDERSTORMS. THIS RAIN WILL REACH CARSON CITY...WASHOE VALLEY...AND DAYTON BY 1230 PM PDT. EXPECT WET ROADS AND REDUCED VISIBILITY ALONG HIGHWAY 395 BETWEEN RENO AND TOPAZ LAKE INTO THE EARLY AFTERNOON. LIGHTER RAIN WILL MOVE ALONG INTERSTATE 80 BETWEEN LOCKWOOD AND FERNLEY...AND ACROSS HIGHWAY 447 BETWEEN WADSWORTH AND PYRAMID LAKE THROUGH 1 PM. MJD
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RENO NV 118 PM PDT FRI AUG 31 2007 CAZ070-071-NVZ005-312100- LASSEN-EASTERN PLUMAS-EASTERN SIERRA COUNTIES-NORTHERN WASHOE COUNTY-SURPRISE VALLEY CALIFORNIA- 118 PM PDT FRI AUG 31 2007 ...STRONG THUNDERSTORMS ACROSS NORTHERN LASSEN AND MODOC COUNTIES MAY PRODUCE LOCAL FLOODING... AT 114 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A LINE OF STRONG THUNDERSTORMS FROM NEAR BIEBER IN LASSEN COUNTY TO THE FORT BIDWELL AND CEDARVILLE AREAS IN MODOC COUNTY. THE STORMS WERE MOVING NORTHEAST AT 20 MPH. OCCASIONAL LIGHTNING...MODERATE RAIN WITH RAINFALL AMOUNTS OF AROUND ONE HALF INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN THREE MILES...SMALL PEA OR MARBLE SIZE HAIL...AND GUSTY WINDS OF AROUND 30 TO 40 MPH... ARE EXPECTED WITH THIS STORM. EXPECT LOCAL FLOODING OF ROADWAYS AND IN AREAS OF STEEPER TERRAIN. IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER INDOORS AND STAY AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS RADIO... WEATHER.GOV/RENO ON THE INTERNET...OR LOCAL MEDIA FOR LATER UPDATES AND POSSIBLE WARNINGS. JAH
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RENO NV 330 PM PDT FRI AUG 31 2007 CAZ070-071-NVZ005-010000- LASSEN-EASTERN PLUMAS-EASTERN SIERRA COUNTIES-NORTHERN WASHOE COUNTY-SURPRISE VALLEY CALIFORNIA- 330 PM PDT FRI AUG 31 2007 ...STRONG FAST MOVING STORMS WITH GUSTY WINDS AND HEAVY RAIN... AT 320 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A SEVERAL STRONG THUNDERSTORMS OVER NORTHEAST LASSEN COUNTY AND NORTHERN WASHOE COUNTY. THE STORMS ARE TRACKING NORTHEAST AT 20 TO 30 MPH. OCCASIONAL LIGHTNING...HEAVY RAIN WITH RAINFALL AMOUNTS UP TO ONE QUARTER INCH IN LESS THAN 30 MINUTES...AND WIND GUSTS NEAR 55 MPH. BLOWING DUST WILL ALSO REDUCE VISIBILITIES TO NEAR ZERO AT TIMES. TWO AUTOMATED WEATHER STATIONS IN NORTHERN WASHOE COUNTY HAVE REPORTED 57 MPH WIND GUSTS WITH THESE STORMS. IF YOU ARE IN NORTHERN WASHOE COUNTY AND NORTHEASTERN LASSEN COUNTY...INCLUDING TRAVELING ALONG HIGHWAYS 447 NORTH OF GERLACH AND AND HIGHWAY 395 NORTH OF RAVENDALE...BE PREPARED FOR THESE STORMS. STAY TUNED TO NOAA ALL HAZARDS RADIO...OR WEATHER.GOV/RENO ON THE INTERNET. BRONG
The national radar mosaic for the moment the first event began.
1 dust storm. Local standard time, as filed.
Strong thunderstorm outflow winds caused a dust storm in western Pershing County. Winds were estimated at between 40 and 50 mph. Visibility was reduced to less than 100 feet.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2007Every state in 2007This day in weather historyWarnings in Nevada, 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: 48700.