Name: Hail in Arizona, July 29, 2001
Start: 2001-07-29T16:15
End: 2001-07-29T16:15
Location: Arizona

Where it happened

Every event with a place to put it. 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

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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 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 Jul 29, 2:30 PM MST, 1 hour 45 minutes earlier.

Area forecast discussion, Jul 29, 2:30 PM MST, 1 hour 45 minutes before

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
230 PM MST SUN JUL 29 2001

.SYNOPSIS...UPPER LEVEL HIGH PRESSURE TO THE EAST AND AN UPPER LEVEL
TROUGH TO THE NORTHWEST WILL ALLOW FOR MONSOONAL MOISTURE TO MOVE
NORTHWARD INTO ARIZONA TONIGHT AND MONDAY. THERE WILL BE A CHANCE OF
THUNDERSTORMS OVER THE EASTERN MOGOLLON RIM AND WHITE MOUNTAINS
TONIGHT...WITH A CHANCE OF THUNDERSTORMS OVER ALL OF NORTHERN
ARIZONA ON MONDAY. DRIER AIR MAY WORK INTO THE NORTHWEST PART OF THE
STATE TUESDAY WITH DECREASING CHANCES OF THUNDERSTORMS THERE AND A
GOOD CHANCE FOR THUNDERSTORMS FROM FLAGSTAFF AND TO THE EAST. IT
LOOKS AS THOUGH THE MONSOONAL MOISTURE WILL REMAIN OVER NORTHERN
ARIZONA INTO THE UP AND COMING WEEKEND.

.DISCUSSION...TONIGHT THE MAIN WEATHER CHALLENGES WILL BE EXTENT OF
CONVECTION AS DEEP MOISTURE IS PUSHED UPSLOPE INTO THE MOGOLLON RIM
AND THE WHITE MOUNTAINS. CLOUD COVER TO THE SOUTH MAY INHIBIT THE
EXTENT OF THE CONVECTION TO THE SOUTHEAST...SO WILL MONITOR
EVOLUTION OF CONVECTION THIS AFTERNOON. WILL SET POPS IN THE EASTERN
RIM AND THE WHITE MOUNTAINS ACCORDINGLY THIS AFTERNOON IN
ASSOCIATION WITH THE EXTENT OF THE CONVECTION DOWN THERE.  AN UPPER
LEVEL WAVE TO THE SOUTH OF ARIZONA PUSHES NORTHWARD AS WELL ON
MONDAY AND BECOMES CAUGHT IN THE WESTERLIES. THIS WAVE MOVES INTO
CENTRAL ARIZONA DURING THE DAY AND LIFTS INTO THE NORTHEAST PLATEAUS
MONDAY NIGHT. DEEP MOISTURE MOVES NORTHWARD WITH THIS
FEATURE...INCREASING CHANCES OF THUNDERSTORMS. SOUTH FLOW AND DEEP
MOISTURE MONDAY AFTERNOON INTO MONDAY NIGHT MAY ENHANCE THE HEAVY
RAIN POTENTIAL AS CONVECTION DEVELOPS AND MOVES NORTHWARD OVER THE
RIM AND THE WHITE MOUNTAINS. BEST POTENTIAL FOR TSRA FROM THE
NORTHEAST PLATEAU INTO THE SHERIDAN MOUNTAINS MONDAY NIGHT AND FROM
FLAGSTAFF AND TO THE EAST ON TUESDAY.

EXTENDED...FAIRLY STRONG EASTERLY WAVE PUSHES INTO SOUTHEAST
SECTIONS OF THE FORECAST AREA LATE WEDNESDAY INTO THURSDAY
MORNING...WITH BEST CHANCES FOR SIGNIFICANT RAIN...WORTH WATCHING
FOR NOW. HIGH PRESSURE WILL CONTINUE TO REMAIN CENTERED TO THE EAST
OF ARIZONA WITH MONSOONAL FLOW AND WEAK EASTERLY WAVES TO PERPETUATE
TSRA THRU THE EXTENDED.
CLEMMONS
.FGZ...NONE.

The radar

The Flagstaff radar (KFSX), 65 km away, was scanning. The volume nearest the first event began at 23:15 UTC.

Open the radar archive at this moment

Event by event

1 hail. Local standard time, as filed.

Hail, Navajo

When: July 29, 4:15 PM MST
Where: Navajo County, Overgaard
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 34.283, -110.583

A thunderstorm produced three-quarter inch hail and street flooding as it passed through Overgaard.

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Arizona in 2001 Every state in 2001 This day in weather history Warnings in Arizona, July 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: 5253684.