Storm Events Database

Event Details

Event Tornado
-- Scale EF0
-- Length 0.01 Miles
-- Width 10 Yards
State CALIFORNIA
County/Area RIVERSIDE
WFO SGX
Report Source Trained Spotter
NCDC Data Source CSV
Begin Date 2012-09-09 13:00:00.0 PST-8
Begin Location 0N PERRIS
Begin Lat/Lon 33.78/-117.23
End Date 2012-09-09 14:00:00.0 PST-8
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 0.00K
Crop Damage 0.00K
Episode Narrative Monsoonal moisture in easterly flow aloft brought showers and thunderstorms to the mountains and deserts each afternoon and evening. The activity on the 9th was mainly in the upper deserts, San Bernardino Mountains and the Inland Empire near Lake Elsinore. Flooding was reported along Highway 74 in Lake Elsinore with 3 to 5 inches of water covering the roadway, along with several downed trees, and a land spout in the nearby city of Perris. Outflow boundaries from storms created strong winds which picked up dust and lowered visibility in the Coachella Valley and near Borrego Springs. Visibility was also lowered to near zero at times with wind gusts around 60 MPH reported in the areas. Storms were more widespread on the 10th as a trough of low pressure drifted north from Mexico. Thunderstorms occurred over most mountain and desert locations, as well as the Inland Empire. Flash flooding was reported in Forest Falls and along Highway 76 in northern San Diego County. Highway 76 was closed for about an hour in the afternoon due to 12 to 18 inches of mud and debris in the road.
Event Narrative A land spout was observed at 1330 PST along interstate 215 and highway 74 in Perris. No funnel was observed at the cloud base, and the land spout remained nearly stationary. Pictures and a video were submitted by spotters.


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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 15.50K 0.00K
PERRIS RIVERSIDE CO. CA 09/09/2012 13:00 PST-8 Tornado EF0 0 0 0.00K 0.00K
DURANT RIVERSIDE CO. CA 09/09/2012 13:30 PST-8 Flood 0 0 0.00K 0.00K
DURANT RIVERSIDE CO. CA 09/09/2012 13:45 PST-8 Thunderstorm Wind 48 kts. EG 0 0 0.50K 0.00K
PAUMA VLY SAN DIEGO CO. CA 09/09/2012 16:00 PST-8 Thunderstorm Wind 36 kts. MG 0 0 6.00K 0.00K
COACHELLA VALLEY (ZONE) COACHELLA VALLEY (ZONE) CA 09/09/2012 19:00 PST-8 High Wind 53 kts. MG 0 0 0.00K 0.00K
COACHELLA VALLEY (ZONE) COACHELLA VALLEY (ZONE) CA 09/09/2012 19:00 PST-8 Dust Storm 0 0 0.00K 0.00K
SAN DIEGO COUNTY DESERTS (ZONE) SAN DIEGO COUNTY DESERTS (ZONE) CA 09/09/2012 19:15 PST-8 High Wind 52 kts. MG 0 0 0.00K 0.00K
SAN JACINTO RIVERSIDE CO. CA 09/09/2012 21:00 PST-8 Flood 0 0 0.00K 0.00K
LIVE OAK SPGS SAN DIEGO CO. CA 09/10/2012 10:45 PST-8 Flood 0 0 9.00K 0.00K
FOREST FALLS SAN BERNARDINO CO. CA 09/10/2012 12:00 PST-8 Flash Flood 0 0 0.00K 0.00K
PALOMAR MTN SAN DIEGO CO. CA 09/10/2012 13:00 PST-8 Heavy Rain 0 0 0.00K 0.00K
HELENDALE SAN BERNARDINO CO. CA 09/10/2012 13:45 PST-8 Flash Flood 0 0 0.00K 0.00K
PAUMA VLY SAN DIEGO CO. CA 09/10/2012 14:30 PST-8 Flash Flood 0 0 0.00K 0.00K
RAMONA SAN DIEGO CO. CA 09/10/2012 14:30 PST-8 Flood 0 0 0.00K 0.00K
Totals: 0 0 15.50K 0.00K