A small push of monsoon moisture fueled thunderstorms over Mohave County overnight.
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 VEF wrote it up.
A small push of monsoon moisture fueled thunderstorms over Mohave County overnight.
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 Las Vegas, NV wrote its last area forecast discussion before the first event at Jun 30, 11:28 PM MST, 1 hour 32 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
1128 PM PDT SUN JUN 30 2013
.SYNOPSIS...EXCESSIVE HEAT WILL CONTINUE THROUGH INDEPENDENCE DAY AS
A STRONG RIDGE OF HIGH PRESSURE HOLDS OVER THE WESTERN STATES. AN
EXCESSIVE HEAT WARNING IS IN PLACE FOR MUCH OF THE AREA THROUGH
THURSDAY EVENING FOR THIS INTENSE AND DANGEROUS HEAT WAVE. ISOLATED
THUNDERSTORMS WILL ALSO BE POSSIBLE EACH DAY...PRIMARILY OVER THE
MOUNTAINS...WITH THE MAIN CONCERNS BEING DRY LIGHTNING AND STRONG
WINDS.
&&
.UPDATE...LIGHT SHOWER ACTIVITY IS MOVING THROUGH PORTIONS OF CLARK
COUNTY INCLUDING THE LAS VEGAS VALLEY DOWN THROUGH EASTERN SAN
BERNARDINO AND WESTERN MOHAVE COUNTIES. THERE MAY BE A FEW SPRINKLES
HERE AND THERE IN THE VEGAS VALLEY FROM THIS SHOWER ACTIVITY BUT NO
RAINFALL ACCUMULATION IS EXPECTED. FURTHER SOUTH...STRONGER RETURNS
ARE SHOWING UP ON RADAR AND LIGHT RAIN ACCUMULATION IS POSSIBLE.
UPDATED GRIDS ARE OUT. -SALMEN-
&&
.AVIATION...FOR MCCARRAN...OUTFLOW FROM SHOWERS MOVING IN FROM THE
NORTH HAS TURNED WINDS TO THE NORTH. WINDS SHOULD BECOME PREVAILING
SOUTHWEST AGAIN BY 1 AM. MAINLY LIGHT WINDS ARE EXPECTED DURING THE
DAY MONDAY WITH ERRATIC WINDS POSSIBLE WITH THUNDERSTORM OUTFLOW.
SCT-BKN CLOUDS AOA 14K THROUGH 2 AM THEN BECOMING FEW-SCT. ISOLATED
THUNDERSTORMS ARE POSSIBLE IN THE PEACH SPRINGS AND MORMON MESA
APPROACH CORRIDORS AGAIN MONDAY AFTERNOON.
FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...WINDS OVER MOST LOCATIONS WILL REMAIN BETWEEN 5 AND 15
KNOTS. OUTFLOW BOUNDARIES WILL BE A FACTOR OVER NORTHWEST ARIZONA
AND LINCOLN COUNTY AS STORMS PRODUCE LOCALLY GUSTY WINDS TO 40 KNOTS
AT TIMES. ISOLATED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED
OVER SOUTHEAST NEVADA AND NORTHWEST ARIZONA THIS EVENING. STORMS
WILL RE-DEVELOP IN GENERALLY THE SAME AREAS MONDAY AFTERNOON AND
EARLY MONDAY EVENING. -SALMEN-
&&
.PREVIOUS DISCUSSION...339 PM PDT...
.SHORT TERM...TONIGHT AND MONDAY...THE CURRENT PATTERN WILL CHANGE
LITTLE OVER THE NEXT 24 HOURS THOUGH THE CENTER OF THE
HIGH...CURRENTLY OVER SOUTHERN NEVADA...WILL SLOWLY MOVE TOWARD
NORTHERN NEVADA BY MONDAY AFTERNOON. THE 22Z SURFACE OBSERVATIONS
SHOWED TEMPERATURES WERE RUNNING WITHIN A DEGREE OR SO OF THOSE
OBSERVED YESTERDAY. ISOLATED THUNDERSTORMS THAT FIRED BEFORE NOON
OVER THE SPRING MOUNTAINS WERE QUICKLY SUPPRESSED AND THE LATEST
SATELLITE AND RADAR TRENDS INDICATE CONVECTION WILL CONTINUE TO ARC
ACROSS CENTRAL NYE...LINCOLN AND MOHAVE COUNTIES THROUGH THIS
EVENING. THUNDERSTORMS WILL BE LATE BLOOMERS OVER THE SOUTHERN
SIERRA BUT SHOULD STILL DEVELOP THROUGH EARLY THIS EVENING. SIMILAR
DEVELOPMENT IS EXPECTED MONDAY AFTERNOON THROUGH MONDAY EVENING
THOUGH STORMS WILL TEND TO MOVE MORE TOWARD THE WEST ACROSS SOUTHERN
NEVADA.
TUESDAY THROUGH THURSDAY EVENING...THE MAIN ISSUES WILL CONTINUE TO
CENTER ON HEAT AND CONVECTION. OVERALL THE MAIN WEATHER PATTERN WILL
NOT CHANGE MUCH WITH AN AREA OF HIGH PRESSURE IN THE MID AND UPPER
LEVELS REMAINING CENTERED OVER NEVADA. 500 MB HEIGHTS ARE FORECAST
TO GRADUALLY DROP FROM 596 DM OR SO ON TUESDAY TO 592-594 DM BY
THURSDAY. BOTH THE GFS AND ECMWF SHOW LITTLE CHANGE IN THE PROGGED
850 MB AND 700 MB TEMPS AT 12Z EACH DAY FROM TUESDAY THROUGH
THURSDAY WITH MEAN VALUES AVERAGING AROUND 24C. BASED ON LEGACY
FORECAST METHODOLOGIES THIS WOULD SUPPORT HIGH TEMPS AROUND 114F
EACH DAY AT MCCARRAN INTERNATIONAL AIRPORT IN LAS VEGAS. FORECAST
SOUNDINGS FROM BOTH THE 12Z ECMWF AND GFS ARE NEARLY ISOTHERMAL
THROUGH THE PERIOD FOR LAS VEGAS. ALL OF THIS WOULD SUGGEST THAT
HIGH TEMPERATURES ACROSS THE AREA WOULD CHANGE VERY LITTLE BASED ON
THERMAL PRINCIPLES - WITH PERHAPS A SLIGHT DROP BY A DEGREE OR TWO
BY THURSDAY AS 500 MB HEIGHTS DROP A LITTLE. HOWEVER, WITH ALL
OPERATIONAL MODELS SHOWING ENOUGH MID-LEVEL MOISTURE AND INSTABILITY
IN PLACE THROUGH THE PERIOD, SHOWERS AND THUNDERSTORMS SHOULD
DEVELOP EACH DAY BY THE LATE MORNING AND AFTERNOON HOURS AND
DIMINISH IN THE EVENING. SURFACE DEWPOINTS ARE NOT FORECAST TO
CHANGE MUCH THROUGH THE PERIOD, HOWEVER, THEY SHOULD BE ABOUT 5-15
DEGREES ABOVE WHAT WE SAW THIS WEEKEND. THE EXTRA CLOUDS AND
MOISTURE SHOULD BE ENOUGH TO TRIM HIGH TEMPS DOWN ANOTHER 1-2
DEGREES WITH ANY AREAS THAT SEE EXTENSIVE CLOUD COVER DROPPING EVEN
MORE. WHILE CRITERIA WILL BE CLOSE TO REACH FOR WEDNESDAY AND
THURSDAY, GIVEN THE LARGE NUMBER OF PEOPLE AND ACTIVITIES OUTSIDE ON
THE 4TH OF JULY IT WAS DECIDED TO EXTEND TO THE EXCESSIVE HEAT
WARNING THROUGH THEN BASED ON THE POTENTIAL HUMAN IMPACTS. IN
ADDITION, PAST LONG DURATION HEAT WAVES HAVE SHOWN THAT MOST DEATHS
OFTEN OCCUR ON AND AFTER THE HOTTEST DAY IN THE PERIOD.
WITH RESPECT TO CONVECTION, THE BEST CHANCES APPEAR TO BE OVER INYO
AND ESMERALDA COUNTIES WITH SLIGHTLY LOWER CHANCES IN LINCOLN,
NORTHERN AND EASTERN MOHAVE AND CENTRAL NYE COUNTIES AS WELL AS THE
SPRING MOUNTAINS. THE GREATEST LI'S AND CAPE ARE SHOWN OVER THE
SIERRA AND WHITE MOUNTAINS IN THIS TIME FRAME AND I HAVE BUMPED UP
POPS THERE A BIT. WHILE HIGH FREEZING LEVELS WILL KEEP HAIL AS A
MINIMAL THREAT, THE DRY LOW-LEVELS WILL SUPPORT GUSTY AND ERRATIC
WINDS AS AN IMPACT ESPECIALLY OVER LINCOLN, MOHAVE AND CENTRAL NYE
COUNTIES WHERE DCAPE VALUES OFF THE GFS AND WRF ARE FORECAST TO
EXCEED 1000 J/KG WHICH WOULD SUPPORT SOME GUSTS OVER 50 MPH IN AND
NEAR THUNDERSTORMS. PWATS ARE FORECAST OVER ALL BUT THE NORTHWEST
CWFA ARE FORECAST BY THE GFS AND ECMWF TO REACH OVER 0.75 INCH WHICH
WOULD FAVOR WETTING RAINS IN ANY SLOWER MOVING OR STRONGER ACTIVITY.
ACTIVITY SHOULD WEAKEN EACH EVENING WITH THE LOSS OF HEATING.
.LONG TERM...FRIDAY THROUGH SATURDAY NIGHT...
A RIDGE OF HIGH PRESSURE WILL CONTINUE TO AFFECT THE REGION WITH
ABOVE NORMAL TEMPERATURES LIKELY TO CONTINUE THROUGH THE EXTENDED
PERIOD. ISOLATED AFTERNOON AND EVENING THUNDERSTORMS ARE
POSSIBLE... PARTICULARLY OVER HIGHER TERRAIN. THERE ARE INDICATIONS
IN THE MID RANGE MODELS THAT THE RIDGE MAY BEGIN TO DRIFT EAST OVER
THE WEEKEND BUT CONFIDENCE IN GUIDANCE IS LOW AT THIS TIME.
.FIRE WEATHER...ISOLATED HIGH BASED THUNDERSTORMS CAN BE EXPECTED
OVER THE MOUNTAINS EACH AFTERNOON AND EARLY EVENING EARLY THIS WEEK.
LIGHTNING CONTINUES TO BE A SIGNIFICANT CONCERN WITH ANY STORMS.
THOUGH STRIKES WILL STILL BE QUITE LIMITED...WILDFIRES WILL BE
EASILY STARTED DUE TO THE EXTREMELY DRY FUELS AND LOW HUMIDITY. SOME
PRECIPITATION WILL BE POSSIBLE WITH STORMS OVER SOUTHERN NEVADA BUT
THE CHANCE OF WETTING RAIN IS VERY LOW.
&&
.CLIMATE...HERE ARE SOME RECORD HIGH TEMPERATURES FROM TODAY THROUGH
TUESDAY...FOLLOWED BY THE RECORD HIGH MINIMUMS FOR LAS VEGAS.
LOCATION 6/30 7/1 7/2
-----------------------------------------------------
LAS VEGAS 115/1994 116/1972 115/1950
MT CHARLESTON 90/1994 94/1988 89/1996
BISHOP 108/1972 105/1999 105/1984
BARSTOW-DAGGETT 118/1994* 112/2001 113/2011
DEATH VALLEY 127/1994 125/1990 127/2001
NEEDLES 121/1994 119/2001 120/2001
KINGMAN 109/1950 108/1967 111/1967
* ALL-TIME RECORD FOR THE MONTH.
AND THE RECORD HIGH MINIMUMS FOR LAS VEGAS...
6/30 89/2009*
7/1 90/1994
7/2 89/2002
* ALL-TIME RECORD FOR THE MONTH.
RECORD NUMBER OF CONSECUTIVE DAYS WITH A TEMPERATURE AT LEAST 115
DEGREES AT LAS VEGAS IS 4 DAYS FROM JULY 16 - JULY 19 2005.
RECORD NUMBER OF CONSECUTIVE DAYS WITH A TEMPERATURE AT LEAST 110
DEGREES AT LAS VEGAS IS 10 DAYS FROM JUNE 17 - JUNE 26 1961.
&&
.VEF WATCHES/WARNINGS/ADVISORIES...
NV...EXCESSIVE HEAT WARNING UNTIL 11 PM PDT THURSDAY FOR
NVZ014>022.
AZ...EXCESSIVE HEAT WARNING UNTIL 11 PM MST THURSDAY FOR
AZZ001>003-036.
CA...EXCESSIVE HEAT WARNING UNTIL 11 PM PDT THURSDAY FOR CAZ519>527.
&&
ADAIR/STACHELSKI/BERC
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:
HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTERThe Las Vegas radar (KESX), 95 km away, was scanning. The volume nearest the first event began at 07:57 UTC.
3 thunderstorm wind, 1 flash flood. Local standard time, as filed.
Thunderstorm winds tore an awning off a mobile home.
Thunderstorm winds blew down a power line.
Thunderstorm winds snapped seven power poles on Route 66 near Oatman, knocking out power to the entire town for 18 hours. Later in the afternoon, a man was treated for heat-related injuries, and one dog died from the heat.
The general store in Oatman was inundated by flash flooding.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2013Every state in 2013This day in weather historyWarnings in Arizona, July 2013
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: 459731, 459732, 459733, 459736.