Flood, Coconino
- When
- August 10, 7:00 PM MST
- Where
- Coconino County, Flagstaff
- Reported by
- NWS EMPLOYEE(OFF DUTY)
- Coordinates
- 35.839, -111.770 (the zone’s center; the record gives no point)
Flood in Arizona, August 10, 2001
Off duty NWS employee reported that the driving range was under water and Soliere Drive closed to due to washouts.
Where it happened
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.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
What happened
The episode as NWS FGZ wrote it up.
Off duty NWS employee reported that the driving range was under water and Soliere Drive closed to due to washouts.
What forecasters said that day
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 Aug 10, 2:30 PM MST, 4 hours 30 minutes earlier.
Area forecast discussion, Aug 10, 2:30 PM MST, 4 hours 30 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
230 PM MST FRI AUG 10 2001
.SYNOPSIS...A MOIST NORTHERLY FLOW WILL CONTINUE TO PRODUCE SHOWERS
AND THUNDERSTORMS OVER NORTHERN ARIZONA TONIGHT. THE LOW PRESSURE
SYSTEM OVER NEW MEXICO WILL DISSIPATE OVERNIGHT WITH HIGH PRESSURE
BUILDING OVER SOUTHERN CALIFORNIA AND WESTERN ARIZONA. THIS WILL ALLOW A
SOMEWHAT DRIER AND WARMER NORTHWEST FLOW TO DEVELOP ON SATURDAY.
HIGH PRESSURE WILL GRADUALLY SHIFT TO THE FOUR CORNERS AREA BY EARLY
NEXT WEEK WITH ENOUGH MOISTURE FOR A CONTINUING CHANCE OF SHOWERS
AND THUNDERSTORMS.
.DISCUSSION...UPPER TROUGH OVER NEW MEXICO WILL ESSENTIALLY
DISSIPATE OVERNIGHT WITH THE UPPER RIDGE OVER SOUTHERN CALIFORNIA
BEGINNING TO DOMINATE THE FLOW PATTERN. THE RIDGE WILL GRADUALLY
SHIFT TO THE FOUR CORNERS AREA BY SUNDAY. IN ANY CASE...A GENERAL
NORTHERLY FLOW SHOULD REMAIN THROUGH SATURDAY WITH TRAJECTORIES A
LITTLE MORE NORTHWESTERLY. THIS WILL RESULT IN SOME DRYING OVER THE
NORTHERN PORTIONS OF THE COUNTY WARNING AREA (CWA) ON SATURDAY.
HOWEVER...MOISTURE WILL REMAIN AMPLE OVER SOUTHERN PORTIONS OF THE CWA.
BY SUNDAY...AS RIDGE SHIFTS TO THE FOUR CORNERS...THE FLOW WILL TURN
MORE FROM THE SOUTHEAST WITH MODELS PROMISING THAT THE MOISTURE WILL
SHIFT TO THE NORTH. FOR TONIGHT...THINK THERE WILL BE ANOTHER ROUND
OF NOCTURNAL STORMS BUT WILL BE MORE FOCUSED OVER THE EASTERN HALF
OF THE LITTLE COLORADO RIVER VALLEY...THE EASTERN MOGOLLON
RIM...WHITE MOUNTAINS AND NORTHERN GILA COUNTY. THE AIR MASS IS
APPARENTLY VERY UNSTABLE ACROSS THIS AREA AND A FAIRLY SIGNIFICANT
AREA OF LOW INERTIAL STABILITY IN THE UPPER LEVELS WILL REMAIN INTO
THE NIGHT. DEEP MOISTURE REMAINS OVER PORTIONS OF YAVAPAI AND
COCONINO COUNTIES AND ANY STORMS THAT FORM WILL PRODUCE HEAVY RAIN.
FOR SATURDAY...WITH SOME DRYING OVER THE NORTH...WOULD EXPECT A MORE
DIURNAL TREND TO CONVECTION AND SOMEWHAT LESS ACTIVITY (ALTHOUGH IT
REMAINS MOIST AND MID LEVEL LAPSE RATES REMAIN FAVORABLE). OVER
CENTRAL AND SOUTHERN PORTIONS OF THE CWA EXPECT SCATTERED TO
NUMEROUS STORMS WITH DEEP MOISTURE REMAINING OVER THE AREA. FOR
SUNDAY MOISTURE NORTHWARD WITH SOME INCREASE IN ACTIVITY. DAYTIME
TEMPERATURES WILL BE WARMER THE NEXT TWO DAYS AS HIGH PRESSURE
BUILDS.
IN THE EXTENDED...SUBTROPICAL RIDGE AXIS REMAINS ENTRENCHED OVER THE
SOUTHWEST UNITED STATES WITH MOIST AIR FROM MEXICO CONTINUING TO
MOVE INTO ARIZONA. AS A RESULT...WILL CONTINUE THE CHANCE OF SHOWERS
AND THUNDERSTORMS THROUGH THE EXTENDED.
MCCOLLUM
.FGZ...FLASH FLOOD WATCH UNTIL 800 PM MST FOR SOUTHWEST COCONINO
COUNTY AND ALL OF YAVAPAI COUNTY.The radar
The national radar mosaic for the moment the first event began.
Event by event
1 flood. Local standard time, as filed.
What these are
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Lightning Strike in Florida, August 10, 2001
- Flash Flood in Alabama, August 10, 2001
- Lightning Strike in Massachusetts, August 10, 2001
- Lightning Strike in Delaware, August 10, 2001
- Damaging Wind and Lightning Strikes in Texas, August 10, 2001
- Hail and Damaging Winds in Virginia, August 10, 2001
- Damaging Wind in Florida, August 10, 2001
- Flash Flooding in Mississippi, August 10, 2001
- Damaging Wind in North Carolina, August 10, 2001
- Flash Flood in Alabama, August 10, 2001
- Flash Flood in Mississippi, August 10, 2001
- Lightning Strike in North Carolina, August 10, 2001
More
Every storm in Arizona in 2001Every state in 2001This day in weather historyWarnings in Arizona, August 2001
Sources
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: 5266892.