Name: Hail in Arizona, August 10, 2001
Start: 2001-08-10T13:48
End: 2001-08-10T13:48
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

Open the live radar over this ground

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.

Three quarter inch diameter hail was reported in Jakes Corner. Thunderstorm wind knocked over a wooden fence.

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, 9:30 AM MST, 4 hours 18 minutes earlier.

Area forecast discussion, Aug 10, 9:30 AM MST, 4 hours 18 minutes before

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
930 AM MST FRI AUG 10 2001

.SYNOPSIS...A MOIST NORTHEASTERLY FLOW WILL CONTINUE TO PRODUCE
SHOWERS AND THUNDERSTORMS OVER NORTHERN ARIZONA TODAY. LOW PRESSURE
TO THE EAST WILL BEGIN TO WEAKEN TODAY WITH HIGH PRESSURE BUILDING
OVER SOUTHERN CALIFORNIA. 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 RAPIDLY WEAKENING THIS
MORNING WITH THE UPPER RIDGE OVER SOUTHERN CALIFORNIA BEGINNING TO
DOMINATE THE FLOW PATTERN. IN ANY CASE A GENERAL NORTHERLY FLOW
SHOULD REMAIN THROUGH SATURDAY WITH GRADUAL DRYING OVER THE WESTERN
PORTIONS OF THE COUNTY WARNING AREA (CWA). IF ANYTHING...MOISTURE
WILL INCREASE OVER THE EASTERN PORTIONS OF THE CWA AS THE DEEP
MOISTURE AXIS MOVES EASTWARD. FOR TODAY...THERE ARE STILL WIDESPREAD
1.0 TO 1.5 PRECIPITABLE WATER VALUES AND THE AIR MASS REMAINS VERY
UNSTABLE. THIS MEANS LOTS OF HEAVY RAIN PRODUCING THUNDERSTORMS.
PORTIONS OF YAVAPAI AND COCONINO COUNTIES HAVE SEEN LOTS OF RAIN
OVER THE PAST 48-HOURS AND SOIL CONDITIONS ARE VERY MOIST. WITH DEEP
MOISTURE REMAINING A FLASH FLOOD WATCH HAS BEEN ISSUED UNTIL 800 PM
MST FOR ALL OF YAVAPAI COUNTY AND THE SOUTHWEST PORTION OF COCONINO
COUNTY. 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. THIS IS BECAUSE THE DEEPER MOISTURE AXIS WILL SHIFT
TO THE EAST TODAY AND A FAIRLY SIGNIFICANT AREA OF LOW INERTIAL
STABILITY IN THE UPPER LEVELS WILL REMAIN THROUGH THE NIGHT. FOR
SATURDAY...WITH SOME DRYING OVER THE WEST...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 EASTERN PORTIONS EXPECT SCATTERED TO NUMEROUS STORMS
WITH MOISTURE AXIS LOCATED ACROSS THE AREA. CURRENT FORECAST HANDLES
THIS WELL.

MCCOLLUM

.FGZ...FLASH FLOOD WATCH UNTIL 800 PM MST FOR SOUTHWEST COCONINO
       COUNTY AND ALL OF YAVAPAI COUNTY.

In the hours before

Special weather statement, Aug 10, 9:30 AM MST, 4 hours 18 minutes before

AZZ004>018-037>040-101930-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
930 AM MST FRI AUG 10 2001

...FLASH FLOOD WATCH UNTIL 800 PM MST FOR SOUTHWEST COCONINO COUNTY
AND ALL OF YAVAPAI COUNTY...

...SCATTERED THUNDERSTORMS TODAY ACROSS NORTHERN ARIZONA WITH THE
POTENTIAL FOR HEAVY RAINFALL...

A MOIST NORTHERLY FLOW WILL REMAIN OVER ARIZONA TODAY AND TONIGHT.
AS A RESULT...WIDESPREAD SHOWERS AND THUNDERSTORMS ARE EXPECTED.
THE MAIN THREAT FROM THESE STORMS WILL BE HEAVY RAIN...WITH RAINFALL
AMOUNTS OF 1 TO 4 INCHES...AND THE POTENTIAL FOR LOCALIZED FLASH
FLOODING. FOR TODAY...THE MAIN THREAT OF FLOODING WILL
BE LOCATED OVER SOUTHWEST COCONINO COUNTY AND ALL OF YAVAPAI COUNTY
WHERE SOIL CONDITIONS HAVE BECOME VERY MOIST. A FLASH FLOOD WATCH
HAS BEEN ISSUED UNTIL 800 PM MST FOR THIS AREA. FOR LATE THIS AFTERNOON
AND TONIGHT THE THREAT FOR ORGANIZED HEAVY RAIN PRODUCING STORMS WILL
SHIFT TO THE EASTERN MOGOLLON RIM...NORTHERN GILA COUNTY...EASTERN
PORTIONS OF THE LITTLE COLORADO RIVER VALLEY AND THE WHITE MOUNTAINS.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 hail. Local standard time, as filed.

Hail, Gila

When: August 10, 1:48 PM MST
Where: Gila County, Jakes Corner
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 34.017, -111.317

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, 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: 5266889.