Arizona, 1999

Tornado and Hail in Arizona, September 15, 1999

September 15, 1999 · NWS FGZ · 3 events in 1 county or zone

2 hail, 1 tornado, as filed by the National Weather Service.

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
2
Property damage
$18 million
Crop damage
None recorded
Events
3

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.

The radar

The Flagstaff radar (KFSX), 106 km away, was scanning. The volume nearest the first event began at 00:00 UTC.

Open the radar archive at this moment

Event by event

2 hail, 1 tornado. Local standard time, as filed.

Hail, Yavapai

When
September 15, 5:00 PM MST
Where
Yavapai County, 10 mi NE of Prescott
Measured
2.75 in hail
Injuries
2 direct, 0 indirect
Property damage
$18 million
Reported by
TRAINED SPOTTER
Coordinates
34.650, -112.350

Tornado, Yavapai

When
September 15, 5:13 PM MST to 5:19 PM MST
Where
Yavapai County, Dewey
Rating
F0
Reported by
LAW ENFORCEMENT
Coordinates
34.530, -112.230

Hail, Yavapai

When
September 15, 5:23 PM MST to 5:27 PM MST
Where
Yavapai County, Dewey
Measured
1.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
34.530, -112.230

For the second day in a row, vertical wind shear combined with monsoon moisture to produce several instances of severe weather. Hail did significant damage in Prescott Valley and in Dewey, with newspaper accounts indicate widespread damage to cars and skylights. Insurance claims from this days severe weather were approximately $18 million dollars. Two people were injuried by the falling hail.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.

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

The same day elsewhere

More

Every storm in Arizona in 1999Every state in 1999This day in weather historyThe tornado archive for Arizona, 1999Warnings in Arizona, September 1999

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: 5723388, 5723389, 5723390.