Five people died of heat-related causes in the Las Vegas Valley between July 4th and July 12th. Although this July was the hottest calendar month on record in Las Vegas, temperatures were below locally defined Excessive Heat Warning criteria during this part of the month.
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 VEF wrote it up.
Five people died of heat-related causes in the Las Vegas Valley between July 4th and July 12th. Although this July was the hottest calendar month on record in Las Vegas, temperatures were below locally defined Excessive Heat Warning criteria during this part of the month.
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 Jul 4, 8:10 AM PST, 3 hours 50 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 910 AM PDT SUN JUL 4 2010 .SYNOPSIS...A BROAD LOW PRESSURE TROUGH WILL REMAIN OVER THE AREA THROUGH THE HOLIDAY WEEKEND. THIS WILL RESULT IN DRY CONDITIONS WITH TEMPERATURES NEAR TO SLIGHTLY BELOW NORMAL. INCREASING MOISTURE IS POSSIBLE BY THE MIDDLE TO END OF THIS WEEK...ESPECIALLY ACROSS MOHAVE COUNTY AND OVER THE SIERRA NEVADA MOUNTAINS. && .UPDATE...A FEW CLOUDS THIS MORNING OVER NORTHERN LINCOLN COUNTY AS SHORT WAVE MOVES THROUGH THE TROUGH WHICH IS BEGINNING TO SHIFT EAST TODAY. EXPECT CLOUDS TO DISSIPATE BY EARLY AFTERNOON AS SYSTEM CONTINUES EAST WITH BASICALLY CLEAR SKIES CWA WIDE DURING THE AFTERNOON. OVERALL CURRENT SHORT TERM FORECAST IS ON TRACK AND DO NOT PLAN ANY UPDATES ATTM. && .AVIATION...FOR MCCARRAN...EAST WINDS 6-12KTS THROUGH 04Z MONDAY THEN BECOMING VARIABLE LESS THAN 10KTS THROUGH 00Z TUESDAY. CLEAR SKIES EXPECTED THROUGH THE PERIOD. FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA...NO SIGNIFICANT WEATHER IS EXPECTED OVER THE NEXT SEVERAL DAYS. GENERALLY SOUTH TO SOUTHWEST WINDS UNDER 10 KTS CAN BE EXPECTED THROUGH TODAY. && .PREV DISCUSSION 300 AM PDT SUN JUL 4 2010 .SHORT TERM...A TROUGH OF LOW PRESSURE WILL CONTINUE TO MOVE EASTWARD TODAY WITH SURFACE WINDS SHIFTING TO A NORTHERLY DIRECTION ACROSS THE NORTHERN AND CENTRAL PORTIONS OF THE FORECAST AREA. BREEZY AFTERNOON SOUTHWEST WINDS CAN STILL BE EXPECTED ACROSS MOHAVE COUNTY. THIS SYSTEM WILL PRODUCE A FEW CLOUDS EARLY IN THE PERIOD TODAY ACROSS LINCOLN COUNTY...OTHERWISE CLEAR CONDITIONS CAN BE EXPECTED. FOR SUNDAY NIGHT THROUGH TUESDAY...DRY CONDITIONS ARE EXPECTED TO REMAIN OVER THE AREA THROUGH MONDAY AS ANOTHER PIECE OF ENERGY DIVES INTO THE NORTHWEST U.S. BY TUESDAY...MODELS CONTINUE TO BE IN AGREEMENT THAT THIS ENERGY WILL DEVELOP SOUTHWARD OVER THE WESTERN U.S. AND RESULT IN A SLIGHT INCREASE IN MOISTURE/INSTABILITY OVER THE SIERRA FOR TUESDAY AFTERNOON. THIS WILL LEAD TO THE POSSIBILITY OF ISOLATED AFTERNOON THUNDERSTORMS THERE. THE MAIN DYNAMICS LOOK TO REMAIN NORTH OF THE FORECAST AREA THOUGH...SO HAVE KEPT ONLY LOW END POPS IN THE FORECAST FOR NOW ACROSS THE SOUTHERN SIERRA DUE TO LIMITED MOISTURE. TEMPERATURES ARE EXPECTED TO WARM BACK TO RIGHT AROUND NORMAL MONDAY AND TUESDAY ACROSS THE ENTIRE AREA. .LONG TERM...FOR WEDNESDAY THROUGH SUNDAY...ECMWF IS STILL THE MODEL OF CHOICE BECAUSE IT HAS REMAINED THE MOST CONSISTENT IN SHOWING A POSSIBLE MOISTURE INCREASE LATER IN THE WEEK AND INTO NEXT WEEKEND. THE GFS...WHICH DURING PREVIOUS RUNS HAS REMAINED RATHER DRY IS STARTING TO TREND MORE TOWARD THE ECMWF AND WILL CONTINUE TO FOLLOW THIS TREND IN THE FORECAST. DRY CONDITIONS EXPECTED AREAWIDE WEDNESDAY AS THE GENERAL FLOW REMAINS SOUTHWEST. BY THURSDAY...THE FLOW WILL START TO TURN MORE SOUTHEAST TO SOUTH AS HIGH PRESSURE STARTS TO BUILD OVER THE SOUTHERN STATES. MOISTURE WILL MAINLY INCREASE ACROSS CENTRAL AND EASTERN ARIZONA...BUT SOME LOWER TO MID LEVEL MOISTURE IS FORECAST TO APPROACH MOHAVE COUNTY. CURRENT POPS BETWEEN 15-20 PERCENT LOOKS GOOD FOR NOW. BY FRIDAY...THE ECMWF SHOWS THE HIGH TO BECOME MORE CENTERED OVER NEW MEXICO WITH THE FLOW INCREASING OUT OF THE SOUTHEAST. SURFACE DEWPOINTS RISE TO OVER 10 DEC C AND A GOOD THETA E RIDGE PUSHES INTO SOUTHERN MOHAVE COUNTY. INCREASING MOISTURE AND THETA E ALONG WITH LOWERING LI VALUES ON SATURDAY AND SUNDAY POINT TO AN EVEN BETTER CHANCE OF SEEING THUNDERSTORMS PUSH INTO MOHAVE COUNTY AND POSSIBLY INTO SOUTHERN NEVADA. ECMWF IS FORECASTING SURFACE DEWPOINTS OVER 16 DEG C BY SATURDAY AFTERNOON. TEMPERATURES ACROSS THE CWA ARE FORECAST TO BE NEAR NORMAL THROUGH THE PERIOD...BUT MAY BE A FEW DEGREES BELOW NORMAL ACROSS MOHAVE COUNTY DUE TO THE POTENTIAL MOISTURE INCREASE. && .VEF WATCHES/WARNINGS/ADVISORIES... NV...NONE. AZ...NONE. CA...NONE. && JENSEN/STAUDENMAIER/GORELOW HTTP://WEATHER.GOV/LASVEGAS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAS VEGAS NV 548 AM PDT SUN JUL 4 2010 AZZ001>003-036-CAZ519>527-NVZ014>022-050400- NORTHWEST PLATEAU-LOWER COLORADO RIVER VALLEY-NORTHWEST DESERTS- LAKE MEAD NATIONAL RECREATION AREA-EASTERN SIERRA SLOPES- OWENS VALLEY-WHITE MOUNTAINS OF INYO COUNTY- DEATH VALLEY NATIONAL PARK-WESTERN MOJAVE DESERT- EASTERN MOJAVE DESERT-MORONGO BASIN-CADIZ BASIN- SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY- ESMERALDA AND CENTRAL NYE COUNTY-LINCOLN COUNTY- NORTHEAST CLARK COUNTY-WESTERN CLARK AND SOUTHERN NYE COUNTY- SHEEP RANGE-SPRING MOUNTAINS-LAS VEGAS VALLEY- SOUTHERN CLARK COUNTY- 548 AM PDT SUN JUL 4 2010 /548 AM MST SUN JUL 4 2010/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST ARIZONA...CALIFORNIA AND SOUTHERN NEVADA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER, SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The national radar mosaic for the moment the first event began.
1 heat. Local standard time, as filed.
Five people died of heat-related causes in the Las Vegas Valley between July 4th and July 12th.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Heat, Las Vegas Valley | 2010-07-09 | 81 | Male | Outside/Open Areas | Direct |
| Heat, Las Vegas Valley | 2010-07-12 | 40 | Male | Outside/Open Areas | Direct |
| Heat, Las Vegas Valley | 2010-07-12 | 49 | Male | Outside/Open Areas | Direct |
| Heat, Las Vegas Valley | 2010-07-07 | 61 | Male | Permanent Home | Direct |
| Heat, Las Vegas Valley | 2010-07-04 | 53 | Female | Permanent Structure | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2010Every state in 2010This day in weather historyWarnings in Nevada, 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: 250640.