Potentially record-setting heat wave scorches western United States

AIRPORTS. >>> ON THE WEST COAST, A HEAT WAVE MAKING. >>> ON THE WEST COAST, A HEAT WAVE MAKINGNG HISTORY, SENDING. A HEAT WAVE MAKING HISTORY, SENDING TEMPERATURES PAST 100. HISTORY, SENDING TEMPERATURES PAST 100 0 AND IT'S NOT SPRING. TEMPERATURES PAST 100 AND IT'S NOT SPRING YET, LIZ KREUTZ. AND IT'S NOT SPRING YET, LIZ KREUTZ. >> Reporter: A. YET, LIZ KREUTZ. >> Reporter: A SCORCHING MEET. >> Reporter: A SCORCHING MEET SCORCHING HEAT WATCH. SCORCHING MEET SCORCHING HEAT WATCH. CITIES LIKE TUCSON AND. SCORCHING HEAT WATCH. CITIES LIKE TUCSON AND PHOENIX BRACING FOR. CITIES LIKE TUCSON AND PHOENIX BRACING FOR TRIPLE-DIGIT TEMPS. PHOENIX BRACING FOR TRIPLE-DIGIT TEMPS. NEITHER HAVE SEEN 100. TRIPLE-DIGIT TEMPS. NEITHER HAVE SEEN 100 DEGREE DAY IN WINTER. NEITHER HAVE SEEN 100 DEGREE DAY I IN WINTER. >> THOSE ARE JUNE AND. DEGREE DAY IN WINTER. >> THOSE ARE JUNE AND JULY T TEMPERATURES.

JULY TEMPERATURES. >> Reporter: THEY'VE HAD TO MAKE AT LEAST. >> Reporter: THEY'VE HAD TO MAKE AT LEAST TWO HEAT-RELATED. HAD TO MAKE AT LEAST TWO HEAT-RELATED RESCUES ON THEIR. TWO HEAT-RELATED RESCUES ON THEIR HIKING TRAILS, WHICH. RESCUES ON THEIR HIKING TRAILS, WHICH THE CITY I IS NOW. HIKING TRAILS, WHICH THE CITY IS NOW CLOSING. THE CITY IS NOW CLOSING. MULTIPLE SPRING. MULTIPLE SPRING TRAINING GAMES ARE MOVING TO EVENING. MOVING TO EVENING HOURS. >> TAKE BREAKSKS EVERY. HOURS. >> TAKE BREAKS EVERY 45 MINUTES, GET IN A. >> TAKE BREAKS EVERY 45 MINUTES, GET IN A COOLER ENVIRONMENT, 45 MINUTES, GET IN A COOLER ENVNVIRONMENT, COOL YOURSELF DOWN. COOLER ENVIRONMENT, COOLOL YOURSELF DOWN. >> Reporter: IN L.A., COOL YOURSELF DOWN. >> Repororter: IN L.A., BLAZING SUN BEATING. >> Reporter: IN L.A., BLAZING SUN BEATING DOWN ON CONSTRUCTITION. BLAZING SUN BEATING DODOWN ON CONSTRUCTION WORKERS IN ALTADENA. DOWN ON CONSTRUCTION WORKERS IN ALTADENA. >> 1:00, 2:00, WE'RE. WORKERS IN ALTADENA. >> 1:00, 2:00, WE'RE DYING. >> 1:00, 2:00, WE'E'RE DYING. IT'S HOT. DYING. IT'S HOT. ROLLED OUT AT 2:30,

IT'S HOT. ROLLED OUT AT 2:30, DRANK FOUR GATORADES. ROLLED OUT AT 2:30, DRANK FOUR GATORADES EACH, FOUR WATERS. DRANK FOUR GATORADES EACH, FOUR WATERS. YOU CAN'T GET ENOUGH. EACH, FOUR WATERS. YOU CAN'T GET ENOUGH FLUIDS. YOU CAN'T GET ENOUGHGH FLUIDS. >> Reporter: SOME SKI. O. >> Reporter: SOME SKI RESORTS FORCED TO CLOSE EARLY. RESORTS FORCED TO CLOSE EARLY. VAIL, COLORADO, SHOWS. CLOSE EARLY. VAIL, COLORADO, SHOWS PARTS OF THE SLOPE SO. VAIL, COLORADO, SHOWS PARTS OF THE SLOPE SO MELTED, YOU CAN SEE. PARTS OF THE SLOPE SO MELTED, YOU CAN SEE THE GRASS. MELTED, YOU CAN SEE E THE GRASS. IN NEBRASKA, THE WARM, THE GRASS. IN NEBRASKA, THE WARARM, DRY AND WINDY. IN NEBRASKA, THE WARM, DRY AND WINDY CONDITIONS CONTINUE TO. DRY AND WINDY CONDITIONS CONTINUE TO FUEL MASSIVEVE WILDFIRES. CONDITIONS CONTINUE TO FUEL MASSIVE WILDFIRES THAT HAVE TURNED. FUEL MASSIVE WILDFIRES THAT HAVE TURNED DEADLY, CLCLAIMING THE. THAT HAVE TURNED DEADLY, CLAIMING THE LIFE OF 86-YEAR-OLD. DEADLY, CLAIMING THE LIFE OF 86-YEAR-OLOLD ROSE WHITE, A. LIFE OF 86-YEAR-OLD ROSE WHITE, A GRANDMOTHER WHO DIDIED. ROSE WHITE, A GRANDMOTHER WHO DIED TRYING TO ESCAPE.

GRANDMOTHER WHO DIED TRYING TO ESCAPE. >> Reporter: TRYING TO ESCAPE. >> R Reporter: >> LIZ IS JOINING US, >> Reporter: >> LIZ IS JOINING US, NOT MUCH RELIEF SOON. >> LIZ IS JOINING US, NOT MUCH RELIEF SOON. >> Reporter: IT'S. NOT MUCH RELIEF SOON. >> Reporter: IT'S EXPECTED THROUGH. >> Reporter: IT'S EXPECTED THROUGH MONDAY. EXPECTED THROUGH MONDAY. THESE INCREDIBLE. THESE INCREDIBLE CONSTRUCTION WORKERS ARE E STILL WORKING. CONSTRUCTION WORKERS ARE STILL WORKING. ININ PALM SPRINGS, COULD.