California, 1998Flash Flood and Damaging Winds in California, September 4 to 9, 1998
September 4 to 9, 1998 · NWS PSR · 3 events in 2 counties and zones
2 thunderstorm wind, 1 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 1 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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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- 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.
Flash Flood, Riverside
- When
- September 4, 4:30 PM PST to 5:30 PM PST
- Where
- Riverside County, 30 mi NW of Desert Center
- Reported by
- PARK/FOREST SERVICE
- Coordinates
- 33.744, -115.994 (the zone’s center; the record gives no point)
Very heavy rain resulted in numerous washes running across roads in Joshua Tree Nattional Park.
Thunderstorm Wind, Imperial
- When
- September 4, 5:50 PM PST to 6:15 PM PST
- Where
- Imperial County, Salton City
- Measured
- 60 kt (69 mph)
- Reported by
- GENERAL PUBLIC
- Coordinates
- 33.300, -115.970
Large tree uprooted, power poles downed and awnings blown off of structures in the Salton Sea Beach area.
Thunderstorm Wind, Imperial
- When
- September 9, 2:35 PM PST to 4:00 PM PST
- Where
- Imperial County, Imperial
- Measured
- 60 kt (69 mph)
- Reported by
- TRAINED SPOTTER
- Coordinates
- 32.850, -115.570
Power lines and power poles downed across parts of Imperial and Niland. Numerous roofs were damaged. At least one billboard was toppled along Highway 86 south of town, and The Movies marquee was shattered. California Highway Patrol investigated a storm-related seven car pileup which occurred between 345 and 348 pm on Highway 111 just south of Aten Road. Some streets were flooded with about an inch /.98/ reported at Imperial. Dense blowing dust reduced visibility to less than 1/8 mile before the heavy rain began.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Heat in Oklahoma, September 4, 19981 death · 1 event
- Heavy Rain in California, September 4, 1998$5.0 million · 1 event
- Heat in Missouri, September 4 to 7, 199813 injured · 2 events
- Flash Flooding in North Carolina, September 4, 19985 events
- Funnel Clouds in Florida, September 4, 19982 events
- Heat in Oklahoma, September 4 to 7, 19981 event
- Heat in Arkansas, September 4 to 5, 19981 event
- Heat in Oklahoma, September 4, 19981 event
- High Wind in North Carolina, September 4, 19981 event
- Damaging Wind in Texas, September 4, 199852 kt wind · 1 event
- Flood in Arizona, September 4, 19981 event
- Damaging Wind in Texas, September 4, 199852 kt wind · 1 event
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: 5671852, 5671851, 5671853.