Arizona, 2001Flash Flood in Arizona, August 7, 2001
August 7, 2001 · NWS FGZ · 1 event in 1 county or zone
1 flash flood, as filed by the National Weather Service.
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.
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- Deaths
- 2
- 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 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 7, 9:30 AM MST, 4 hours 30 minutes earlier.
Area forecast discussion, Aug 7, 9:30 AM MST, 4 hours 30 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
930 AM MST TUE AUG 07 2001
.SYNOPSIS...AN UPPER LEVEL DISTURBANCE WILL MOVE WESTWARD INTO
ARIZONA TODAY BRINGING AN INCREASE IN CLOUDINESS AND SHOWER
ACTIVITY...ALONG WITH COOLER AFTERNOON TEMPERATURES. THIS UNSETTLED
WEATHER WILL PERSIST FOR THE NEXT FEW DAYS. EXPECT SOME WARMING AND
A DECREASE IN SHOWER ACTIVITY TO BEGIN BY LATE IN THE WEEK.
.DISCUSSION...VERY LARGE-SCALE CYCLONIC CIRCULATION IS BEGINNING TO
MOVE INTO THE SOUTHWEST THIS MORNING. THIS FEATURE HAS BEEN TRACKING
WESTWARD OVER THE SOUTHERN PLAINS FOR THE PAST FEW DAYS SO THE
TRAJECTORIES ARE NOT TYPICAL OF THE SUMMER MONSOON. NONETHELESS,
SOME GULF OF MEXICO MOISTURE HAS BEEN ENTRAINED INTO THIS SYSTEM SO
THAT WE SHOULD SEE SOME INCREASE IN DEEP LAYER MOISTURE AS IT
PROGRESSES WESTWARD. UPWARD FORCING IS EVIDENT ALONG THE LEADING
EDGE OF THIS SYSTEM AS SHOWN BY DIVQ FIELDS. CONVECTION HAS ALREADY
BEGUN TO DEVELOP THIS MORNING OVER WESTERN NEW MEXICO AND EASTERN
ARIZONA...ALONG WITH A SUBSTANTIAL AMOUNT OF CLOUD COVER. EXPECT
THIS AREA TO PROGRESS WESTWARD TODAY AND BECOME MORE WIDESPREAD AS
THE CONVECTIVE BOUNDARY LAYER HEATS UP. KFGZ SOUNDING AGAIN SHOWS
ONLY MARGINAL CAPE (AOA 450 J/KG) SO DO NOT EXPECT ANY PARTICULARLY
STRONG STORMS. MAIN THREAT TODAY WILL BE SOME GUSTY WINDS BASED ON
THE DEPTH OF THE DRY LAYER IN THE LOWER TROP. SECONDARY THREAT WILL
BE ISOLATED HEAVY RAINFALL AMOUNTS...BUT DO NOT BELIEVE THIS WILL BE
EXCESSIVE SINCE CLOUD COVER SHOULD SERVE TO MINIMIZE HEATING AND
REALIZATION OF CAPE POTENTIAL. UPDATES ON THE WAY. DB
.FGZ...NONE.
In the hours before
Special weather statement, Aug 7, 8:30 AM MST, 5 hours 30 minutes before
AZZ004>018-037>040-071930-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
830 AM MST TUE AUG 7 2001
...SHOWERS AND THUNDERSTORMS LIKELY BY THIS AFTERNOON EAST OF A LINE
FROM PAGE TO PRESCOTT...
AN UPPER LEVEL DISTURBANCE WILL HELP SUPPORT WIDESPREAD
THUNDERSTORMS DEVELOPMENT TODAY. SHOWERS AND THUNDERSTORMS HAVE
BEGUN TO DEVELOP THIS MORNING OVER FAR EASTERN ARIZONA AND WILL
SPREAD WESTWARD DURING THE DAY. THE BEST CHANCES FOR STRONG
THUNDERSTORMS WILL BE TO THE EAST OF A PAGE TO PRESCOTT LINE. A FEW
THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE LOCALLY HEAVY RAINFALL
OF 1 TO 3 INCHES...GUSTY WINDS...AND HAIL TO AROUND ONE INCH.
Special weather statement, Aug 7, 9:12 AM MST, 4 hours 48 minutes before
AZZ004>018-037>040-071930-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
830 AM MST TUE AUG 7 2001
...SHOWERS AND THUNDERSTORMS LIKELY BY THIS AFTERNOON EAST OF A LINE
FROM PAGE TO PRESCOTT...
AN UPPER LEVEL DISTURBANCE WILL HELP SUPPORT WIDESPREAD
THUNDERSTORMS DEVELOPMENT TODAY. SHOWERS AND THUNDERSTORMS HAVE
BEGUN TO DEVELOP THIS MORNING OVER FAR EASTERN ARIZONA AND WILL
SPREAD WESTWARD DURING THE DAY. THE BEST CHANCES FOR STRONG
THUNDERSTORMS WILL BE TO THE EAST OF A PAGE TO PRESCOTT LINE. A FEW
THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE LOCALLY HEAVY RAINFALL
OF 1 TO 3 INCHES...GUSTY WINDS...AND HAIL TO AROUND ONE INCH.
Flash Flood, Coconino
- When
- August 7, 2:00 PM MST to 7:00 PM MST
- Where
- Coconino County, The Gap
- Deaths
- 2 direct, 0 indirect
- Reported by
- NEWSPAPER
- Coordinates
- 35.839, -111.770 (the zone’s center; the record gives no point)
Two people died while hiking in a slot canyon when a flash flood washed them down stream. The two were long overdue from a hiking trip when searchers began looking for them. The last entry in a personal journal, dated August 7, indicated that they were going to hike up a slot canyon 16 miles southwest of The Gap. The canyon is marked by steep cliff walls that offer no escape to higher ground in the event of a flash flood. Their bodies were found over 16 days later.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Heat in Minnesota, August 7 to 8, 20015 deaths · 1 event
- Heat in Missouri, August 7 to 9, 20011 death · 10 injured · 29 events
- Damaging Wind in Florida, August 7, 2001$75,000 · 1 event
- Flood and Lightning Strike in Oklahoma, August 7, 2001$50,000 · 2 events
- Damaging Wind in Arizona, August 7, 2001$50,000 · 1 event
- Damaging Wind in North Dakota, August 7, 2001$35,000 · 61 kt wind · 1 event
- Damaging Winds in New York, August 7, 2001$30,000 · 55 kt wind · 2 events
- Tornado in Mississippi, August 7, 2001$25,000 · F0 · 1 event
- Heavy Rain in North Carolina, August 7, 2001$25,000 · 1 event
- Heat in Illinois, August 7 to 9, 200117 events
- Damaging Wind in Arizona, August 7, 2001$20,000 · 1 event
- Lightning Strike in Vermont, August 7, 2001$20,000 · 1 event
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: 5266980.