Arizona, 2002

Hail in Arizona, August 16, 2002

August 16, 2002 · NWS TWC · 1 event in 1 county or zone

Severe thunderstorm moved southeast at 10 mph across the city of Sierra Vista and Fort Huachuca. Fort Huachuca reported hail size of three quarters of an inch in diameter and 30 mph wind gusts at 124 pm MST.

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 happened

The episode as NWS TWC wrote it up.

Severe thunderstorm moved southeast at 10 mph across the city of Sierra Vista and Fort Huachuca. Fort Huachuca reported hail size of three quarters of an inch in diameter and 30 mph wind gusts at 124 pm MST.

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 Tucson, AZ wrote its last area forecast discussion before the first event at Aug 16, 9:30 AM MST, 3 hours 54 minutes earlier.

Area forecast discussion, Aug 16, 9:30 AM MST, 3 hours 54 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
930 AM MST FRI AUG 16 2002

.SYNOPSIS...LOW LEVEL MOISTURE WILL CONTINUE TO INCREASE FOR THE
NEXT SEVERAL DAYS AND WITH AN UPPER LEVEL DISTURBANCE OVER THE STATE
THE CHANCE OF THUNDERSTORMS WILL INCREASE BOTH TODAY AND
SATURDAY...WITH TYPICAL MONSOON THUNDERSTORM ACTIVITY THROUGH NEXT
WEEK.

.DISCUSSION...THE NORTHWEST FLOW IS GONE...AND THE SURGE CONTINUES.
THAT NORTHWEST FLOW WAS A MAJOR STOPPER TO ANY THUNDERSTORM ACTIVITY
EARLY IN THE WEEK BECAUSE WE KEPT MIXING DRY AIR INTO THE SURGE
LAYER WITH A SUBSEQUENT LOWERING OF BOUNDARY LAYER MOISTURE DURING
THE AFTERNOON. YESTERDAY AFTERNOON THE WINDS BEGAN TO RELAX AND
THUNDERSTORMS DEVELOPED IN THE LATE AFTERNOON. TODAY SHOULD BE
BETTER...TUCSON SOUNDING LOOKS EXPLOSIVE WITH CAPE OVER 3000 IF WE
CAN REACH MAX TEMPERATURE...SURFACE DEW POINT TEMPERATURES ARE UP 3
TO 5F ACROSS MOST OF THE LOW DESERTS...WITH MODERATE CUMULUS ALREADY
DEVELOPING ON OUR MOUNTAINS. ALOFT...TEMPERATURES ARE COLD IN THE
MID LEVELS WITH AN UPPER LOW OVER AJO AREA DRIFTING TO THE SOUTH OR
SOUTHWEST. A SPEED MAX IS ROTATING AROUND THE BACKSIDE OF THE TROF
AND SHOULD BE IN THE BASE OF THE TROF TONIGHT PROVIDING US WITH SOME
LEFT FRONT QUAD ACTION. STEERING FLOW IS WEEK BUT MOTION SHOULD PUSH
STORMS NORTHWEST. OVER IN EASTERN ZONES MOISTURE IS MUCH LOWER AND
ACTIVITY MAY STILL HANG NEAR MOUNTAINS..

TWC...NONE.

In the hours before

Special weather statement, Aug 16, 11:30 AM MST, 1 hour 54 minutes before
AZZ019-029>035-170700-

SOUTHEAST ARIZONA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1130 AM MST FRI AUG 16 2002

.SYNOPSIS...THE LOW LEVEL MOISTURE CONTINUES TO MOVE INTO THE LOW
DESERTS WHILE THE MID LEVELS CONTINUE TO REMAIN DRY. AN UPPER LEVEL
DISTURBANCE WILL ENHANCE THUNDERSTORM ACTIVITY IN SOUTHERN ARIZONA
TODAY AND INCREASE THE CHANCE OF SEVERITY.

.DISCUSSION...AN UPPER LEVEL LOW IN ADDITION TO LOW LEVEL MOISTURE
FROM A GULF SURGE WILL ENHANCE THUNDERSTORM DEVELOPMENT IN PORTIONS
OF SOUTHERN ARIZONA. THE LOW LEVELS CONTINUE TO BE WELL SATURATED
WITH MOISTURE WHILE THE MID LEVELS CONTINUE TO BE DRY. THE UPPER
LEVEL SOUNDING FROM TUCSON THIS MORNING GAVE A PRECIPITABLE WATER OF
1.20 INCHES AND WITH STRONG HEATING...THE POTENTIAL FOR SEVERE
THUNDERSTORMS IS HIGHER THAN CLIMATOLOGY.

WHILE THE STRONGEST STORMS ARE EXPECTED IN EASTERN AND CENTRAL
PIMA...WESTERN AND SOUTHERN COCHISE...AND SANTA CRUZ COUNTIES... DRY
AIR AT ALL LEVELS IN WESTERN PIMA...GREENLEE...AND GRAHAM COUNTIES
WILL LIMIT THUNDERSTORM DEVELOPMENT TODAY.

MOVEMENT OF STORMS WILL BE NORTHWEST AT 10 MPH. THEREFORE STORMS MAY
PRODUCE HEAVY RAIN IN THE VALLEY LOCATIONS TODAY...THEREFORE THE
POTENTIAL FOR ONE INCH RAIN IS ABOVE CLIMATOLOGY.

The radar

The Tucson radar (KEMX), 44 km away, was scanning. The volume nearest the first event began at 20:23 UTC.

Open the radar archive at this moment

Event by event

1 hail. Local standard time, as filed.

Hail, Cochise

When
August 16, 1:24 PM MST to 1:30 PM MST
Where
Cochise County, (Fhu)ft Huachuca Afb
Measured
0.75 in hail
Reported by
OTHER FEDERAL AGENCY
Coordinates
31.583, -110.350

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 2002Every state in 2002This day in weather historyWarnings in Arizona, August 2002

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: 5312812.