>> A TOXIC GAS USED AS AN INGREDIENT DURING WORLD WAR II, TO KILL MILLIONS OF PEOPLE, IS BEING DETECTED AT COMMUNITIES NEAR THE TIJUANA RIVER.

THANK YOU FOR JOINING US.

THE IMPERIAL BEACH CITY OFFICIALS MEDICAL PROFESSIONALS AND RESIDENTS ARE DEMANDING THE COUNTY, STATE AND FEDERAL GOVERNMENT STEP IN.

VIDEO JOURNALIST MATTHEW HAS MORE ON WHAT WAS FOUND IN THE RISK IT POSES.

>> HYDROGEN CYANIDE GAS IS SOMETHING THAT'S USED AS A CHEMICAL OF WAR.

MATTHEW DIXON FROM SOUTH BAY URGENT CARE JOINED OFFICIALS TO RING THE ALARM BELL.

RESEARCHERS MEETING AIR QUALITY TESTING FOUND TOXIC LEVELS OF HYDROGEN SULFIDE AND HYDROGEN CYANIDE AS RECENTLY AS EARLY THIS MORNING.

THEY WERE IN THE AIR NEAR THE TIJUANA RIVER OVER A SMALL WATERFRONT.

>> OUR REGION IS FACING THESE DANGEROUS LEVELS THAT'S NOT JUST AN ENVIRONMENTAL ISSUE, IT'S A SERIOUS PUBLIC HEALTH EMERGENCY.

JUST LAST NIGHT FROM APPROXIMATELY 1:-2 -- TOXIC GASES WERE DETECTED ACROSS SEVERAL LOCATIONS.

>> Reporter: THEY ARE HYDROGEN SULFIDE WHICH IS USED IN INDUSTRIES LIKE OIL REFINING, BUT IT'S ALSO A BYPRODUCT OF SEWAGE SYSTEMS.

IT SMELLS LIKE ROTTEN EGGS TOO.

HYDROGEN CYANIDE, ON THE OTHER HAND HAS HAD SOME HORRIFIC USES.

BUT IT IS ALSO A INDUSTRIAL CHEMICAL USED FOR ELECTROPLATING AMONG OTHER USES.

WANTING THE COUNTY STATE AND FEDERAL GOVERNMENT TO HELP.

SHE'S CALLING FOR AIR FILTERS AND PURIFIERS TO BE DISTRIBUTED TO RESIDENTS SHE'S ALSO ASKING FOR GAS AND PARTICLE MONITORS TO BE PLACED AROUND THE RIVER.

SHE WANTS SIGNS TO WARN PEOPLE ABOUT THE TOXIC GAS AND SHE SAYS SHE WANTS THE HELP OF STUDENTS AND TEACHERS OF NEARBY SCHOOLS TO BE PROTECTED.

KIMBERLY IS AN ATMOSPHERIC CHEMIST WITH THE INSTITUTION OF OCEANOGRAPHY.

>> EVERYONE SHOULD PUT A FILTER FOR PARTICLES AND GASES IN THEIR HOUSE AS SOON AS POSSIBLE.

IS ASSIGNED HAS STUDY THAT TOO.

>> Reporter: SHE EVEN TOLD HER RESEARCHERS NOT TO STAY IN THE AREA CYANIDE GAS IS HEAVIER THAN AIR AND THAT NIGHT THE AIR IS COOLER, THERE FOR MORE DENSE AND THE GAS CANNOT DISSIPATE CAUSING LEVELS TO RISE TO EVEN MORE DANGEROUS LEVELS.

HE'S GOT QUESTIONS ABOUT WHY FEDERAL AND STATE OFFICIALS HAVE NOT YET DECLARED EMERGENCIES TO ADDRESS THE SEWAGE PROBLEM.

>> Reporter: IS A BORDER POLITICS?

ENVIRONMENTAL RACISM?

WHY IS IT HAPPENING HERE?

WHY IS IT OKAY TO NEGLECT THIS COMMUNITY?

URGENT CARE DOCTOR DIXON SAYS THE SITUATION COULD BE VERY DANGEROUS FOR NEARBY RESIDENTS.

>> IF YOU DIDN'T REALIZE THOSE GASES WERE THERE, YOU SMELLED SOMETHING JOGGING BY THE BRIDGE WHERE THE BRIDGE GOES UNDERNEATH, YOU COULD BE DEAD IN MINUTES.

>> Reporter: THIS RECORD- BREAKING HEAT WAVE DROVE RECORD- BREAKING HEAT -- THAT THE MAN COUPLED WITH EXTREME HEAT RESULTED IN MORE THAN 13,000 OUTAGES ACROSS THE COUNTY.

OUR MEDIA PARTNER WAS IN VALLEY CENTER TODAY WERE NEARLY 300 HOMES AND BUSINESSES WERE WITHOUT POWER THIS MORNING.

THEY SPOKE WITH THE GENERAL MANAGER OF THE VALLEY CENTER DISTRICT ABOUT HOW THEY PREPARED FOR THE TRIPLE DIGIT TEMPERATURES.

>> WE HAVEN'T BEEN AFFECTED BY ANY OUTAGES THIS FACILITY IS FULLY POWERED AS WE HAVE GENERATORS THAT COME ON AUTOMATICALLY.

WE HAVE GENERATORS AT OUR CRITICAL PUMPING STATIONS AND THEN I HAVE FOUR LARGE GENERATORS THAT I CAN DEPLOY.

RECOMMENDING CUSTOMERS EXPERIENCING OUTAGES CHECK THEIR BREAKERS, USE FLASHLIGHTS NOT CANDLES AND LIMIT THE TIMES YOU OPEN YOUR FRIDGE AND FREEZER.

THEY ALSO SAY TO CHECK ON YOUR NEIGHBORS.

>> WE ARE EASING OUR WAY OUT OF A HOTS WRETCH STILL MILD IN THE LOWER 70s BUT THAT'S DOWN FROM WHERE WE WERE THE PREVIOUS NIGHTS.

I WILL TELL YOU THE TREND COMING UP IN THE FORECAST NEXT.

>>> A MASSIVE FIRE IS BURNING DANGEROUSLY CLOSE FORCING THOUSANDS TO EVACUATE.

THE LINE FIRE GREW TO MORE THAN 23,000 ACRES TODAY AND IS JUST 3% CONTAINED.

IT STARTED IN THE HIGHLAND AREA THURSDAY.

AN ESTIMATED 36 -- 36,000 STRUCTURES ARE IN THE FIRES PAST.

GOVERNOR NEWSOM HAS DECLARED A STATE OF EMERGENCY.

A NEW MAJOR POLL HAS FORMER PRESIDENT TRUMP AND VICE PRESIDENT KAMALA HARRIS IN A DEAD HEAT THE NEW YORK TIMES LET'S TRUMP WITH 40% AND HARRIS WITH 47% OF THE VOTE FALLING WITHIN THE MARGIN OF ERROR.

THE POLL ALSO FOUND 30% OF RESPONDENTS NEED TO LEARN MORE ABOUT HARRIS ONLY 9% SAID THEY NEED TO LEARN MORE ABOUT TRUMP.

TOMORROW NIGHT THE TWO CANDIDATES WILL FACE OFF IN A DEBATE.

JULIA HAS MORE ABOUT HOW THEY HAVE BEEN PREPARING.

>> Reporter: VICE PRESIDENT KAMALA HARRIS SPENT THE DAY PREPARING MAKING BRIEF PUBLIC APPEARANCES.

HARRIS HAS HELD MOCK DEBATES AND IS LEANING ON ADVICE FROM FORMER PRESIDENT DONALD TRUMP'S PREVIOUS DEMOCRATIC OPPONENTS.

PRESIDENT JOE BIDEN AND FORMER SECRETARY OF STATE HILLARY CLINTON HOPING TO BENEFIT FROM THEIR EXPERIENCES.

>> IT'S THIS PLAYBOOK WHERE THERE IS NO FORWARD MOVEMENT IN TERMS OF HOW LOW HE WILL GO.

WE SHOULD BE PREPARED FOR THAT.

>> Reporter: VICE PRESIDENT HAS BEEN READING BRIEFING PAPERS ABOUT THE INSULTS HE'S DIRECTED AT HER.

DESPITE THE RECENT CHANGE AT THE TOP OF THE DEMOCRATIC TICKET SOURCES SAY TRUMPS DEBATE PREP STRATEGY HASN'T CHANGED MUCH SINCE HE FACED BIDEN IN JUNE.

>> WE ARE RUN BY STUPID PEOPLE.

STUPID STUPID PEOPLE.

AND WE FOUND THAT OUT AT THE DEBATE HOW DID THAT WORK OUT?

WERE GOING TO FIND IT OUT AGAIN ON TUESDAY NIGHT.

IS ANYONE GOING TO BE WATCHING?

>> Reporter: THE FORMER PRESIDENT ARGUES HE DOESN'T NEED FORMAL PREPARATION, SUCH AS MOCK DEBATES BUT HAS BEEN MEETING WITH SENIOR ADVISERS, POLICY EXPERTS AND OUTSIDE ALLIES TO READY HIMSELF FOR TUESDAY.

>> WE TALK ABOUT IT BUT THERE'S NOT A LOT YOU CAN DO EVEN THOUGH YOU HAVE GOOD POLICY OR NOT.

>> Reporter: REPORTING IN PHILADELPHIA.

>> Reporter: AS WE SEEN THIS CYCLE DEBATE PERFORMANCES CAN MAKE OR BREAK CAMPAIGNS BUT THERE'S MORE TO PAY ATTENTION TO THAN JUST THEATRICS.

COMING UP, WHAT VOTER SHOULD BE WATCHING OUT FOR.

THE SAN DIEGO CITY COUNCIL IS HOLDING OFF ON A PROPOSAL TO GRANT THE MAYOR NEW AUTHORITY AMID HOMELESSNESS AND HOUSING EMERGENCIES.

IT WOULD GIVE THE MAYOR THE POWER TO ACCEPT AND SPEND GRANT MONEY TO RESPOND TO THE EMERGENCY AND SUSPEND CITY COUNCIL APPROVAL FOR CONTRACTS UNDER $5 MILLION.

THAT AUTHORITY WOULD ONLY BE GRANTED IF SAN DIEGO'S ON HOUSE POPULATIONS MORE THAN DOUBLED SHELTER BANDS OR IF IT INCREASES BY MORE THAN 20% IN A SINGLE YEAR.

THE COUNCIL WAS SET TO CONSIDER THE PROPOSAL TODAY BUT THEY'S AND GET BACK TO STAFF TO DETERMINE ITS IMPACT ON CITY WORKERS.

STATE REGULATORS ARE SUSPENDING RESIDENTIAL SUBSTANCE ABUSE TREATMENT AT VETERANS VILLAGE OF SAN DIEGO.

MILITARY AND VETERANS AFFAIRS REPORTER ANDREW DYER HAS MORE ON HOW THIS COULD IMPACT LOCAL VETERAN SERVICES.

>> Reporter: THE TEMPORARY SUSPENSION.

A NEW SOURCE REPORTED LAST WEEK THE CALIFORNIA DEPARTMENT OF HEALTH CARE SERVICES ISSUED THE TEMPORARY SUSPENSION ORDER TO GO INTO EFFECT TODAY.

THE AGENCY SAYS IT'S IN RESPONSE TO SAFETY CONCERNS AND SEVEN RESIDENT THAT OVER THE LAST TWO YEARS.

VETERANS VILLAGE RECEIVES A VARIETY OF FUNDING FOR ITS VARIOUS PROGRAMS SOME TREATMENTS ARE PAID FOR BY THE VA, OTHERS FROM THE COUNTY.

THIS NEW DEVELOPMENT LEAVES VETERANS VILLAGE AND ELIGIBLE TO RECEIVE REIMBURSEMENT.

LOCAL AND FEDERAL OFFICIALS ARE SCRAMBLING TO GET AFFECTED VETERANS INTO OTHER PROGRAMS.

VA OFFICIALS HAVE BEEN ON SITE CHECKING IN WITH RESIDENTS.

TODAY ABOUT A THIRD OF ABOUT 141 VETERANS ARE THERE FOR SUBSTANCE USE TREATMENT.

HALTING NEW ADMISSIONS THEY MAY CONTINUE LIVING THERE WHILE RECEIVING SUBSTANCE USE TREATMENT ELSEWHERE.

THEY ARE OFFERING THE SAME GUILT TO RESIDENTS PREVIOUSLY RECEIVING FUNDS.

AGENCY SAYS VETERANS CAN ALSO SWITCH TO ONE OF THE OTHER TRANSITIONAL HOUSING PROGRAMS AND REMAIN AT THE FACILITY VETERANS VILLAGE OF SAN DIEGO DIDN'T RESPOND TO REQUESTS FOR COMMENT.

KPBS NEWS.

RESEARCHERS OF OCEANOGRAPHY ARE MAKING STRIDES TOWARDS PREDICTING BLUFF COLLAPSES BEFORE THEY HAPPEN.

INVESTIGATIVE REPORTER SCOTT SAYS THE ULTIMATE GOAL IS TO CREATE AN EARLY WARNING SYSTEM THAT SAVES LIVES.

>> Reporter: PATRICK DAVIS AND HIS LATE WIFE JULIE DAVIS MOVED MORE THAN 40 YEARS AGO.

THE COASTAL TOWN WAS AN IDYLLIC PLACE TO START A FAMILY.

>> WE RAISED FOUR CHILDREN, GREW UP IN THIS DUTIFUL COMMUNITY COULDN'T HAVE BEEN HAPPIER.

YOU NOW?

WE HAD A WONDERFUL LIFE HERE.

>> Reporter: IN AUGUST OF 2019, FRIENDS AND FAMILY GATHERED AT THE NEARBY BEACH FOR A CELEBRATION.

HIS SISTER-IN-LAW HAD CHEST COMPLETED BREAST CANCER TREATMENT.

HE SAYS THE LIFEGUARD ON DUTY SUGGESTED THEY SIT JUST NORTH OF THE LIFEGUARD TOWER.

>> IT IS HIGH TIDE AT THE TIME SO WE WERE PROBABLY ONLY 10 FEET AWAY FROM THE CLIFF.

THERE WAS MAYBE ANOTHER 10 FEET OF THE MOST IN FRONT OF US WHERE THE WAVES WEREN'T RAKING.

>> Reporter: PEOPLE ON THE BEACH ATE SANDWICHES AND RELAX IN THE SUN.

>> WE SAT THERE AND JUST ENJOYING OURSELVES AND NEXT THING WE KNEW, THE CLIFF LET LOOSE.

AND THEN IT WAS JUST PURE BEDLAM AFTER THAT.

>> Reporter: A SECTION OF THE BLUFF HAD COLLAPSED SENDING HUGE ROCKS AND DEBRIS ONTO THE BEACH BELOW.

SEVERAL PEOPLE WERE PINNED UNDER THE CRUSHING WEIGHT OF THE FALLEN BOULDERS.

EMERGENCY RESPONDERS RUSHED TO THE SCENE BUT SOME OF THE INJURIES WERE TOO SEVERE.

DAVIS LOST HIS WIFE, HIS SISTER- IN-LAW AND HIS DAUGHTER, ANNIE.

>> WE HAVE NEVER BEEN THE SAME FAMILY SINCE.

>> AFTER FIVE YEARS, DAVIS IS ABLE TO TALK ABOUT HIS WIFE, JULIE.

>> I CAN'T TALK ABOUT MY DAUGHTER.

LOSING A CHILD IS ONE OF THE WORST THINGS ANY PARENT COULD EVER GO THROUGH.

SO THAT'S BEEN REAL DIFFICULT.

IF YOU WANT ME TO GET EMOTIONAL, START TALKING ABOUT ANNIE.

>> Reporter: DAVE IS NO LONGER SPENDS TIME ON THE BEACH BUT HE OFTEN WALKS DOWN THE LONG STAIRCASE TO SEE WHERE PEOPLE ARE SITTING.

>> ALMOST EVERY TIME I'VE GONE DOWN TO THE BEACH, I SEE PEOPLE SITTING RIGHT AGAINST THE BLUFFS.

I REMIND THE LIFEGUARDS THAT PART OF THEIR JOB IS TO KEEP PEOPLE AWAY FROM THE BLUFFS AND THEY THEN RESPOND AND RUN DOWN AND TELL PEOPLE HOW DANGEROUS IT IS.

>> IT SHOULDN'T BE ON THE SHOULDERS OF ONE GRIEVING MAN TO KEEP EACH GOERS FAITH.

FORTUNATELY STATE LAWMAKERS AND LOCAL RESEARCHERS ARE DIGGING INTO THE PROBLEM THE ULTIMATE HOPE IS TO DEVELOP AN EARLY WARNING SYSTEM THAT SAVES LIVES ALONG THE COAST.

SCIENTISTS ARE A FEW YEARS INTO THEIR RESEARCH AND THE EARLY RESULTS ARE PROMISING.

MARK IS A RESEARCH GEOPHYSICIST.

>> WE'VE HAD THREE CASES WHERE IT'S CLEAR SOMETHING WAS GOING TO HAPPEN.

>> Reporter: EACH TIME TO ACCURATELY PREDICTED ONE AT A SPECIFIC LOCATION SOMETIMES MORE THAN A DAY IN ADVANCE.

TOGETHER DATA THEY INSTALLED SENSORS CALLED TILT METERS ALONG THE BLUFFS.

THE DEVICE IS LIKE A VERY SOPHISTICATED LEVELING TOOL.

>> IF YOU COULD SET OUT A CARPENTER'S LEVEL AND VERY PRECISELY KEEP TRACK OF THE POSITION OF THAT LEVEL, YOU WOULD BE ABLE TO TELL IF THE LAND IS TILTING.

>> Reporter: SOON RESEARCHERS WILL INSTALL CUSTOM SENSORS THAT CAN CALCULATE LAND MOVEMENT.

SCRIPTS RESEARCHER ADAM YOUNG SAYS EARLY WARNING SYSTEMS DO EXIST FOR INLAND LANDSLIDES.

>> SOMETHING SPECIFIC FOR THE COASTLINE.

HE'S OPTIMISTIC THAT A WARNING SYSTEM ALONG THE COAST IS FEASIBLE.

>> WHAT WE ARE SEEING SO FAR IS QUITE PROMISING THAT WE WILL BE ABLE TO USE THESE SIGNALS IN THE FUTURE TO DEVELOP A SYSTEM.

THESE EARLY RESULTS ARE REMARKABLE BUT THE SCIENTISTS CAUTION THERE'S A LOT THAT REMAINS UNKNOWN.

EVEN IF A WARNING SYSTEM CAN BE DEVELOPED, IT WILL LIKELY TAKE YEARS TO ROLLOUT AND REQUIRE ACTION FROM STATE LAWMAKERS.

ASSEMBLYWOMAN TOSHA REPRESENTS THE COASTAL AREAS OF DELMAR.

SHE OFF -- AUTHORED THE LEGISLATION THE KICK STARTED THE RESEARCH.

>> GOING ACROSS CALIFORNIA IN THE SELECT LOCATIONS THAT ARE MOST ACUTELY EXPERIENCING THOSE BOXES.

>> Reporter: THE SYSTEM COULD BE ROLLED UP UP AND DOWN THE WEST COAST.

NEWS ABOUT THE PROGRESS LAST PATRICK DAVIS FEELING ENCOURAGED.

>> I THINK THIS COULD BE JUST A REALLY VALUABLE STEP IN GETTING THE BLESSED TO BE A LOT SAFER.

>> Reporter: DAVIS FAMILY FILED A LAWSUIT AGAINST THE STATES AND LOCAL HOMEOWNERS ASSOCIATION.

THEY ARE ASKING FOR POLICY CHANGES TO IMPROVE SAFETY ALONG THE COAST.

KPBS NEWS .

>>> FASTING HAS A LOT OF HEALTH BENEFITS BUT THE PHYSICAL REACTION TO THE ABSENCE OF FOOD IS NOT SOMETHING WE ENTIRELY UNDERSTOOD.

KPBS REPORTER THOMAS FUDGE TELLS US ABOUT THE DISCOVERY IN THE WAY THAT GOT TALKS TO THE BRAIN.

>> Reporter: WHEN WE EAT, FOOD SENDS A SIGNAL THAT RELEASES INSULIN THAT DELIVERS NUTRIENTS TO OUR BODIES.

WHEN WE DON'T EAT, WE DON'T GET THAT SIGNAL IN OUR BODIES START TO USE FAT STORES DELIVER THE NUTRITION WE NEED.

THAT'S WHAT WE THOUGHT, BUT IT'S NOT THE WHOLE STORY.

IT'S LEAVING OUT TWO IMPORTANT PLAYERS.

NEUROSCIENTISTS CALLS THOSE MOLECULES FLIPPED SEVEN IN THE BRAIN IN THE GUT.

>> THE PEPTIDE THAT IS SECRETED FROM THAT GOT FUNCTIONS IN THE NEURONS THAT RELEASE AND ACCESS A GAIT AND SAYS STOP.

>> Reporter: WHICH MEANS STOP BURNING FAT.

IT MAY SEEM STRANGE THAT AN INSULIN ANTAGONIST WOULD TELL HER BRAIN TO STOP BURNING FAT DURING A FAST AND ITS EFFECT IS ULTIMATELY OVERRIDDEN.

UNDERSTANDING THE POWER OF THE MOLECULE COULD PROVIDE NEW MEDICAL WAYS TO BEGIN FAT LOSS AMONG PEOPLE WITH OBESITY.

YOU CAN IMAGINE A DRUG THAT BLOCKS WOULD PROMOTE THE BURNING OF FAT, NOT PREVENT IT.

>> WHAT THE STUDY ALLOWS US TO START THINKING ABOUT, IS HOW INSULIN ANTAGONISM IN MAMMALS MAY BE PHYSIOLOGICALLY RELEVANT A ROUTE -- REVEL AND -- RELEVANT TOOL.

>> Reporter: THE EXPERIMENTS SAYS IT WAS DONE ON WORMS.

THEY ARE GREAT TO STUDY BECAUSE THEY HAVE A REMARKABLE PHYSICAL SIMILARITY TO HUMANS.

HERE'S A PHOTO OF ONE OF THEM WITH THAT MESSENGER MOLECULE IN GREEN.

WHEN IT COMES TO FASTING, AND SHOWN MANY HEALTH BENEFITS.

A STUDY OF FIREFIGHTERS IN SAN DIEGO WHO DID A DAILY 14 HOUR FAST, SHOWED THEY HAVE LOWER BLOOD PRESSURE AND LOWER BLOOD SUGAR.

THERE'S MORE.

THEY HAVE BENEFICIAL EFFECTS ON LIFESPAN.

THAT'S BEEN SHOWN.

>> Reporter: SCIENTIFIC ADVANCES COULD MAKE THOSE HEALTH BENEFITS MORE WITHIN REACH OF PEOPLE WHO HAVE SUFFERED THE EFFECTS OF WEIGHT GAIN.

SOCCER FANS PACKED THE STADIUM ON SUNDAY TO WATCH ONE OF THE ALL-TIME GREAT ONE LAST TIME.

THAT'S THE WAY SHE HAS ALWAYS BEEN.

TEAM BEFORE SELF AND NOW SOME FINAL HUGS AS THIS MOMENT WILL BE ONE SHE WILL REMEMBER AND ALL OF THESE FANS WILL REMEMBER.

SAN DIEGO WAVE FORWARD ALEX MORGAN TOOK OFF HER CLEATS IN THE MIDDLE OF THE PITCH JUST 13 MINUTES INTO HER FINAL GAME SHE RETIRED AFTER 15 YEAR CAREER COMPETING ON THE U.S. NATIONAL WOMEN'S TEAM AND THE WAVE SINCE 2022.

3 OF THE SUNGLASSES ON BECAUSE I DID THAT ALSO KNOWING SHE'S OUT THERE BATTLING IN 104 DEGREES PREGNANT.

WHAT A BEAST.

>> YOU DID SO MUCH GREAT STAFF.

I FEEL LIKE NOW SHE'S HAVING A BABY, WHILE SHE'S PREGNANT.

SHE'S BEEN PLAYING THROUGH THIS.

HE'S BEEN MY HERO.

>> MORGAN IS PREGNANT WITH HER SECOND CHILD FANS ARE HOPING SHE COULD RETURN TO PROFESSIONAL SOCCER AS A COACH IN THE FUTURE.

AS PEOPLE ALL OVER CALIFORNIA FEEL THE HEAT, THE STATE LAW THAT TOOK EFFECT EARLIER THIS YEAR AIMS TO KEEP STUDENT ATHLETES SAFE DURING EXTREME HEAT.

ASHLEY SHARP EXPLAINS.

>> IF IT GETS INTO THE RED.

>> Reporter: THIS LITTLE GADGET IS A GAME CHANGER IN HIGH SCHOOL SPORTS ACROSS CALIFORNIA.

EMORY SCHOOL NOW REQUIRED TO HAVE ONE TO TACKLE RISK WHEN PLAYING AND PRACTICING IN EXTREME HEAT.

HIGH SCHOOL FOOTBALL PRACTICE TUESDAY.

>> NOW OR IN THE YELLOW WE ARE MONITORING AS NEEDED BUT THERE IS MANDATORY FOUR-MINUTE WATER BREAK EVERY HOUR.

>> Reporter: MEASURING GROUND AND AIR TEMPERATURE, HUMIDITY AND WIND.

IT SPITS OUT A NUMBER RANKING THAT CORRESPONDS TO THE NEW RULES THE STATE'S GOVERNING BODY FOR HIGH SCHOOL SPORTS.

>> IF YOU GO ABOVE 92.1, NO OUTDOOR WORKOUTS.

>> Reporter: LANDING IN ORANGE OR RED MEANS REQUIRED RESTRICTIONS FROM MANDATORY BREAKS, TO SHORTER PRACTICES TAKING OFF HELMETS OR PADS AND EVEN RESCHEDULING.

>> WHAT WE HAVE SEEN SCHOOLS DO FOR FRIDAY NIGHTS WHEN GAMES ARE HAPPENING THEY ARE STARTING A LITTLE LATER.

>> Reporter: THE ASSISTANT COMMISSIONER FOR THE SECTION AS FAR AS THIS WEEK'S HEAT WAVE IS CONCERNED.

>> I CAN SEE IT IN THE ORANGE PRESSURE.

THAT WOULD MEAN PRACTICE TIME IS LIMITED.

GAME TIME IS LIMITED.

THE ATHLETIC DIRECTOR SAYS THEY ARE BRACING FOR THE HEAT.

>> TOMORROW'S PRACTICE WILL HAVE TO BE PUSHED BACK A LITTLE LATER.

>> THIS SEASON FOR THE FIRST TIME THE MARAUDERS ARE ABLE TO PRACTICE AND PLAY AT NIGHT.

>> WE HAVE STADIUM LIGHTS NOW THAT WE CAN UTILIZE THE LIFE TO PUSH OUR PRACTICE UNTIL 8:00 TO MAKE SURE WE ARE GETTING A FULL PRACTICE IN.

STAYING OUT OF THE HOTTEST TIME OF THE DAY.

>> WE ARE FINALLY SAYING GOODBYE TO THE EXCESSIVE HEAT WE'VE HAD ACROSS THE AREAS.

GOT SOME GREAT NEWS.

OVER THE WEEKEND WE SHATTERED RECORDS AND PLACES LIKE EL CAJON, ESCONDIDO.

WE ARE READY TO BE FINISHED WITH THE HEAT.

THAT IS THE LEAD PART OF OUR FORECAST WE ARE EASING OUR WAY OUT OF IT TONIGHT AND INTO THE UPCOMING DAYS.

A DRY PATTERN SIGNS OF MOISTURE COMING INTO OUR AREA.

SOME PARTS OF CALIFORNIA WE WILL BE GETTING IN ON THAT RAIN ACTION AS WE WORK OUR WAY TOWARDS THE COAST.

WE WILL NOTICE THAT TREND WHICH HELPS KEEP THE NUMBERS DOWN IN THE DAYS TO COME.

71 FOR THE LOW IN THE CITY.

OF COURSE AGAIN THAT'S VERY MILD FOR THIS TIME OF YEAR.

AND LEASE COOLER THAN WHERE WE WERE IN THE PREVIOUS NIGHTS MOVING TOWARDS ESCONDIDO 64 AND 67 DEGREES HEADING INTO TOMORROW THE SUN IS STILL OUT IT'S STILL BRIGHT IT AT LEAST A LITTLE MORE OF A MARINE LAYER TOWARDS THE COAST WE WILL TRY TO MAKE THINGS A LITTLE BIT MORE TOLERABLE.

83.

MOUNT LAGUNA 74 110.

THAT'S A DOWNWARD TREND FROM THE PAST FEW DAYS.

AS WE LOOK INTO WEDNESDAY, THE STORE ACROSS NORTHERN CALIFORNIA WHEN WE TRY TO BRING BACK MOISTURE WITH A NEW STORM SYSTEM COMING IN.

THE PROBLEM IS IT DOES HAVE A LOT OF WIND ACROSS NEVADA AND UTAH WE WILL SEE THAT BE A FIRE THREAT FARTHER NORTH.

NOT REALLY IN OUR AREA.

KEEP IN MIND THE FIRE RISK IS ALWAYS THERE THIS TIME A YEAR.

UPCOMING DAYS FOR ME GO BACK INTO THE MID-70s WHICH FEELS MORE LIKE WE SHUT THIS TIME OF YEAR.

THE REST OF THE WEEK IS LOOKING MUCH BETTER ESPECIALLY WEDNESDAY AND BEYOND WHEN THOSE NUMBERS ARE MUCH MORE BEARABLE IN THE 80s FOR INLAND COMMUNITIES AS WE LOOK TOWARDS LOCATIONS LOOKING TO KEEP THINGS BACK TO THE 60s TOMORROW WHICH IS STILL IN THE MID-70s AS WE TRANSITION TO THOSE SPOTS THOSE NUMBERS DO COME OUT OF THE TRIPLE DIGITS.

FOR KPBS NEWS , -- >> WHAT'S MOTIVATING VOTERS IN THE SWING STATE OF PENNSYLVANIA AT THE BACK KAMALA HARRIS A DONALD TRUMP?

THAT'S COMING UP AFTER EVENING EDITION ON KPBS.

>>> ELECTION SEASON IS KICKING INTO HIGH GEAR SCHOOL BOARDS TO THE WHITE HOUSE CANDIDATES ARE GOING HEAD-TO-HEAD PUTTING NEW POLICIES AND PERSONALITIES ON FULL DISPLAY FOR VOTERS.

MORE ON HOW DEBATES CAN SHAPE AN ELECTION WHAT TO WATCH FOR IN TOMORROW'S HIGH-STAKES PRESIDENTIAL DEBATE.

>> Reporter: DEBATES AND THEIR MEMORABLE MOMENTS HISTORICALLY CRITICAL TO CANDIDATE SUCCESSES AND FAILURES.

>> 1980s ARE CALLING FOR THEIR FOREIGN-POLICY BACK.

THE MATCHUP CHANGED THE 2024 RACE ENTIRELY.

>> WE FINALLY BEAT MEDICARE., HARRISON FORMER PRESIDENT DONALD TRUMP ARE FACING OFF OF THE FIRST TIME.

>> FOR THE TYPICAL VIEWER IS WATCHING THIS WITH SOME DEGREE OF HOW MY GOING TO VOTE?

THERE IS KAMALA HARRIS COMING FROM POLICY AND PERSONALITY WHERE DONALD TRUMP IS COMING FROM POLICY AND CREDIBILITY.

GEORGE WASHINGTON UNIVERSITY SAYS EVEN THE THEATRICS OFTEN REPLAY SUBJECTS WATCHING ANY POLITICAL DEBATE VOTERS SHOULD LISTEN CLOSELY.

>> WHAT THESE CANDIDATES SAY ABOUT THE PARTICULARS OF POLICY.

HOW THEY WOULD PAY FOR IT.

WHAT THE IMPLICATIONS ARE HOW FAR THEY WOULD REACH HOW THEY WOULD IMPLEMENT THEM.

>> Reporter: NOTE HOW THE CANDIDATES RESPOND TO EACH OTHER.

>> THE INTERACTION BETWEEN THE TWO OF THEM WILL BE VERY IMPORTANT.

HOW THEY DEFINE THEMSELVES WHEN YOU TRY TO FIND THE OTHER.

HAVE A DEAL WITH A DIFFICULT SITUATION.

>> Reporter: THE DEBATE SHOULD LAST AROUND 90 MINUTE WITH SEEMS LIKE A BIG COMMITMENT BUT IT'S AN INVESTMENT EVERY VOTER SHOULD MAKE.

>> OF THESE TWO CANDIDATES IS SAYING SOMETHING THAT WILL ADDRESS THE ISSUES ON THE PROBLEMS THAT I AND MY FAMILY ARE CONFRONTING.

AND WHO SEEMS MOST CREDIBLE AND MOST RELATABLE ON THAT LEVEL?

>> WE WILL CARRY THE PRESIDENTIAL DEBATE LIVE STARTING AT 6:00 TOMORROW NIGHT RIGHT HERE ON KPBS.

YOU CAN FIND TONIGHT STORIES ON OUR WEBSITE .

THANK YOU SO MUCH FOR JOINING US.

HAVE A GREAT EVENING.