A river guide was struck by lightning while on a river trip in the Grand Canyon.
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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 FGZ wrote it up.
A river guide was struck by lightning while on a river trip in the Grand Canyon.
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 Flagstaff, AZ wrote its last area forecast discussion before the first event at Jul 21, 8:30 PM MST, 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 830 PM MST SUN JUL 21 2013 .SYNOPSIS...MOIST AND UNSTABLE SOUTHEASTERLY FLOW WILL PERSIST OVER ARIZONA FOR SEVERAL DAYS WITH SHOWERS AND THUNDERSTORMS EXPECTED EACH DAY. && .DISCUSSION... FOR TONIGHT...SCATTERED THUNDERSTORMS WERE CONTINUING IN THE GENERAL AREA OF THE GRAND CANYON AND WESTERN PORTIONS OF THE LITTLE COLORADO RIVER VALLEY. AS A RESULT...A FLASH FLOOD WATCH WILL CONTINUE FOR THOSE PORTIONS OF NORTH CENTRAL ARIZONA UNTIL 100 AM MST. ELSEWHERE THE THREAT FOR HEAVY RAIN PRODUCING STORMS HAS ENDED AND THE FLASH FLOOD WATCH HAS BEEN DROPPED. FOR THE REMAINDER OF THE NIGHT...ONLY ISOLATED THUNDERSTORM ACTIVITY IS EXPECTED AFTER MIDNIGHT WITH SKIES REMAINING MOSTLY CLOUDY. ON MONDAY...MOISTURE AND INSTABILITY PROFILES WILL REMAIN VIRTUALLY UNCHANGED WITH A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS WITH DAYTIME HEATING. FOR TUESDAY THROUGH SATURDAY...EASTERLY COMPONENTS WILL REMAIN IN THE STEERING FLOW ON TUESDAY AS THE HIGH STRUGGLES TO BUILD STRENGTH AND WEAK LOW PRESSURE REMAINS OFF THE WEST COAST. THE THREAT OF NOCTURNAL CONVECTION FROM WESTWARD MOVING BOUNDARIES IN THE LITTLE COLORADO RIVER VALLEY WILL EXIST IN EVERY PERIOD THROUGH TUESDAY. AFTER TUESDAY...STREAMLINES BECOME SOUTHERLY AND THEN WESTERLY AS THE HIGH STRENGTHENS. THIS WILL BRING IN DRIER...WARMER AND MORE STABLE AIR FOR THE MUCH OF SOUTHWEST THURSDAY AND FRIDAY. AS A RESULT...THE CHANCE OF SHOWERS AND THUNDERSTORMS HAS BEEN TRENDED DOWNWARD TOWARD THE END OF THE WEEK. HOWEVER...MOST FORECAST MODELS SHOW SOUTHERLY FLOW AND DEEPER MOISTURE RETURNING NEXT WEEKEND. && .AVIATION...FOR THE 06Z PACKAGE...MONSOON MOISTURE WILL REMAIN OVER ARIZONA. ISOLATED SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE NIGHT BECOMING SCATTERED TO NUMEROUS AFTER 18Z. OTHERWISE...EXPECT MAINLY BROKEN SKY CONDITIONS WITH SCATTERED CEILINGS OF 2-4 KFT AGL OVER THE HIGHER TERRAIN. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FIRE WEATHER...A MOIST AND UNSTABLE AIR MASS WILL REMAIN IN PLACE ACROSS ARIZONA ALLOWING FOR THE DEVELOPMENT OF SCATTERED SHOWERS AND STORMS MONDAY AND TUESDAY. CONVECTIVE ACTIVITY WILL FAVOR THE AFTERNOON AND EARLY EVENING HOURS...THOUGH SOME SHOWERS WILL CONTINUE OVERNIGHT. EXPECT NEAR AVERAGE DAILY TEMPERATURES. WEDNESDAY THROUGH FRIDAY...CHANCES FOR DAILY THUNDERSTORMS WILL CONTINUE UNDER A MOIST MONSOONAL FLOW. .FGZ WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH UNTIL 1 AM MST MONDAY FOR NORTHWEST PORTIONS OF COCONINO COUNTY. && PUBLIC.........MCCOLLUM/DL/PETERSON AVIATION.......MCCOLLUM/DB FIRE WEATHER...DB FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT WEATHER.GOV/FLAGSTAFF
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 945 AM MST SUN JUL 21 2013 AZZ004>018-037>040-220800- WESTERN MOGOLLON RIM-GRAND CANYON COUNTRY-YAVAPAI COUNTY MOUNTAINS- YAVAPAI COUNTY VALLEYS AND BASINS-OAK CREEK AND SYCAMORE CANYONS- MARBLE AND GLEN CANYONS-KAIBAB PLATEAU-COCONINO PLATEAU- NORTHEAST PLATEAU AND MESAS HWY 264 NORTHWARD- NORTHEAST PLATEAU AND MESAS SOUTH OF HWY 264- CHINLE VALLEY-CHUSKA MOUNTAINS AND DEFIANCE PLATEAU- BLACK MESA AREA-LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY- LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY- LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY- EASTERN MOGOLLON RIM-WHITE MOUNTAINS-NORTHERN GILA COUNTY- 945 AM MST SUN JUL 21 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY A FLASH FLOOD WATCH IS IN EFFECT FROM 1 PM MST TODAY UNTIL 1 AM MST MONDAY FOR ALL OF NORTHERN ARIZONA...SEE PHXFFAFGZ FOR DETAILS. A MOIST AND UNSTABLE AIR MASS WILL BRING ANOTHER ACTIVE THUNDERSTORM DAY TO NORTHERN ARIZONA. STORMS WILL INITIATE OVER THE HIGHER TERRAIN THEN MOVE INTO THE LOWER ELEVATIONS. SOME STORMS MAY PRODUCE HAIL AND VERY HEAVY RAINFALL. HIGHER THAN NORMAL MOISTURE ACROSS THE AREA...AS WELL AS RECENT HEAVY RAINS...WILL ENHANCE THE CHANCES OF FLASH FLOODING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY DAILY CHANCES FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH MID WEEK. A DRYING TREND MAY DEVELOP TOWARD THE END OF THE WEEK. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Cedar City radar (KICX), 172 km away, was scanning. The volume nearest the first event began at 03:59 UTC.
1 lightning. Local standard time, as filed.
A river guide was struck by lightning while on a river trip in the Grand Canyon.
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: 473884.