California, 1997

High Wind in California, December 21 to 22, 1997

December 21 to 22, 1997 · NWS SGX · 4 events in 4 counties and zones

A rapidly deepening low pressure center over southwest Arizona produced strong gradient winds through many valley areas. The fierce winds toppled at least 6 trucks on stretches of the I-15 and 60 freeways in San Bernardino and Riverside Counties.

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
4

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 SGX wrote it up.

A rapidly deepening low pressure center over southwest Arizona produced strong gradient winds through many valley areas. The fierce winds toppled at least 6 trucks on stretches of the I-15 and 60 freeways in San Bernardino and Riverside Counties. In the Coachella Valley, the wind uprooted numerous trees in Palm Desert, forcing the closure of Country Club Road during the morning, and overturned several big-rig trucks near Indio. Desert Hot Springs also reported several trees and signs down.

The radar

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

Open the radar archive at this moment

Event by event

4 high wind. Local standard time, as filed.

High Wind, San Bernardino County Valley/The Inland Empire

When
December 21, 10:00 PM PST to December 22, 3:00 PM PST
Where
San Bernardino County Valley/The Inland Empire forecast zone
Measured
61 kt (70 mph)
Coordinates
34.293, -116.086 (the zone’s center; the record gives no point)

High Wind, Riverside County Valley/The Inland Empire

When
December 21, 10:00 PM PST to December 22, 3:00 PM PST
Where
Riverside County Valley/The Inland Empire forecast zone
Measured
55 kt (63 mph)

High Wind, Santa Ana Mountains and Foothills

When
December 21, 10:00 PM PST to December 22, 3:00 PM PST
Where
Santa Ana Mountains and Foothills forecast zone
Measured
70 kt (81 mph)
Coordinates
33.483, -116.847 (the zone’s center; the record gives no point)

High Wind, Coachella Valley

When
December 22, 2:00 AM PST to 3:00 PM PST
Where
Coachella Valley forecast zone
Measured
55 kt (63 mph)
Coordinates
33.744, -115.994 (the zone’s center; the record gives no point)

What these are

High Wind
Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.

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

The same day elsewhere

More

Every storm in California in 1997Every state in 1997This day in weather historyWarnings in California, December 1997

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: 5626275, 5626276, 5626277, 5626278.