California, 2001

Damaging Wind in California, September 3, 2001

September 3, 2001 · NWS VEF · 1 event in 1 county or zone

1 thunderstorm wind, 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

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
$200,000
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 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 Las Vegas, NV wrote its last area forecast discussion before the first event at Sep 3, 1:40 PM PST, 1 hour 20 minutes earlier.

Area forecast discussion, Sep 3, 1:40 PM PST, 1 hour 20 minutes before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
240 PM PDT MON SEP 3 2001

SYNOPSIS...A MOIST AND UNSTABLE AIR MASS WILL COMBINE WITH AN UPPER
LOW MOVING THROUGH SOUTHERN CALIFORNIA TO PRODUCE THUNDERSTORMS OVER
MUCH OF THE AREA THIS EVENING. LINGERING MOISTURE AND INSTABILITY
WILL RESULT IN ISOLATED THUNDERSTORMS OVER THE HIGHER TERRAIN
TUESDAY. HIGH PRESSURE WILL BEGIN TO BUILD INTO THE REGION WEDNESDAY
BRINGING WARM AND DRY WEATHER.

DISCUSSION...UPPER LOW WELL ON SHORE NOW AND CAUSING INCREASED
DEVELOPMENT OVER MUCH OF SOUTHERN CA. STILL EXPECT THIS FEATURE TO
PRODUCE THUNDERSTORMS OVER SAN BERNARDINO COUNTY REMAINDER OF THE
AFTERNOON AND THIS EVENING WITH SCATTERED THUNDERSTORMS CONTINUING
OVER INYO COUNTY PROBABLY UNTIL MIDNIGHT. REPORT OF VERY HEAVY RAIN
WITH SMALL HAIL FROM SPOTTER ON THE EAST SLOPE OF THE SIERRA EARLY
THIS AFTERNOON. WITH LOW APPROACHING INYO COUNTY LATE THIS AFTERNOON
...WILL EXTEND FLASH FLOOD WATCH INTO THAT AREA AND MAKE IT VALID
UNTIL MIDNIGHT. DRIER AIR BEGINS TO MOVE IN BEHIND THIS UPPER LOW
TONIGHT BUT EXPECT SCATTERED SHOWERS AND THUNDERSTORMS THIS EVENING
OVER SOUTHERN NV...CONTINUING MOST OF THE NIGHT IN LINCOLN COUNTY.
ONLY ISOLATED EVENING THUNDERSTORMS IN NORTHWEST ARIZONA. UPPER LOW
INFLUENCE MOVES NORTHEAST OF FORECAST AREA BY TUESDAY WITH DRIER AIR
MOVING IN BEHIND. HOWEVER...SOME RESIDUAL MOISTURE WITH WEAK
INSTABILITY LINGERS OVER PORTIONS OF NV AND NORTHWEST AZ SO A SLIGHT
CHANCE OF AFTERNOON MOUNTAIN THUNDERSTORMS LOOKS O.K. AND WILL LEAVE
IT IN THE FORECAST. LOOKS DRY AND STABLE FROM THEN ON BUT SOME HIGH
LEVEL MOISTURE WILL MOVE UP FROM THE SOUTHWEST BY WEDNESDAY AND WILL
GO PARTLY CLOUDY ACROSS THE NORTHERN PORTION OF FORECAST AREA WHERE
THICKER CLOUD COVER LIKELY. UPPER HIGH BUILDS OVER THE AREA THURSDAY
THROUGH SATURDAY WITH WARMER AND MOSTLY CLEAR CONDITIONS. 12Z AVN
SUPPORTS LAST NIGHTS MRF WITH THE IDEA OF BRINGING A STRONG UPPER
LOW INTO CA BY SUNDAY AND ACROSS NORTHERN NV AS IT WEAKENS MONDAY.
THIS WOULD BRING BREEZY CONDITIONS AND COOLER TEMPS AND WILL TREND
THE FORECAST THAT WAY FOR SUNDAY AND MONDAY.  JMH

.LAS...A FLASH FLASH FLOOD WATCH IS IN EFFECT FOR MUCH OF SAN
BERNARDINO COUNTY CALIFORNIA UNTIL 9 PM THIS EVENING AND FOR INYO
COUNTY UNTIL MIDNIGHT. PLEASE SEE THE LATEST BULLETIN FOR DETAILS.

The radar

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

Open the radar archive at this moment

Event by event

1 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, San Bernardino

When
September 3, 3:00 PM PST
Where
San Bernardino County, Yermo
Measured
70 kt (81 mph)
Property damage
$200,000
Reported by
NEWSPAPER
Coordinates
34.900, -116.817

A powerful thunderstorm produced strong winds that blew mobile homes off their foundations and knocked down 22 power poles that left about 3000 people without power. About 12 mobile homes were severely damaged and two cars were crushed by a toppled mobile home. Several roads around town were closed due to debris in the roadway.

What these are

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.

The same day elsewhere

More

Every storm in California in 2001Every state in 2001This day in weather historyWarnings in California, September 2001

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: 5268132.