Damaging Wind in California, August 7, 2001

Name: Damaging Wind in California, August 7, 2001
Start: 2001-08-07T18:35
End: 2001-08-07T18:35
Location: California

August 7, 2001 · NWS PSR · 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: $10,000
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 Phoenix, AZ wrote its last area forecast discussion before the first event at Aug 7, 2:10 PM PST, 4 hours 25 minutes earlier.

Area forecast discussion, Aug 7, 2:10 PM PST, 4 hours 25 minutes before

AZZ020>028-CAZ030>033-080545-

SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PHOENIX AZ
310 PM MST TUE AUG 7 2001

.SYNOPSIS...
A STRONG WEATHER DISTURBANCE WILL BECOME NEARLY STATIONARY ACROSS
FAR EASTERN ARIZONA THE NEXT COUPLE OF DAYS. THIS SYSTEM WILL HELP
TO TRIGGER SHOWERS AND THUNDERSTORMS OVER MAINLY SOUTH-CENTRAL
ARIZONA THROUGH WEDNESDAY NIGHT. SOUTHWEST ARIZONA AND FAR SOUTHEAST
CALIFORNIA WILL REMAIN RELATIVELY DRY. AFTER THIS...THERE WILL BE A
TEMPORARY LULL IN THE THUNDERSTORM THREAT ON THURSDAY BEFORE THE
UPPER HIGH SHIFTS BACK TO OUR NORTH. THIS SHIFT WILL BRING RENEWED
CHANCES OF THUNDERSTORMS OVER SOUTH-CENTRAL ARIZONA BY THE END OF
THE WEEK.

.DISCUSSION...
FAIRLY ACTIVE DAY ACROSS MUCH OF CWFA...WITH ISOLATED STORMS EVEN
RUMBLING ACROSS SE CA ZONES. DESERT SFC TEMP/DEWPOINT DEPRESSIONS IN
THE 40 TO 60 DEG F RANGE STILL GIVING THE SOUNDINGS AN INVERTED V
LOOK...ALTHOUGH KIWA RADAR ALSO ESTIMATING SOME ISOLATED HEFTY
RAINFALL AMOUNTS. CHECK OF 18Z MESO-ETA SHOWS WE ARE UNDERGOING SOME
DYNAMICAL INFLUENCE FROM VORT MAX MOVING IN FROM THE 4 CORNERS AREA.
AND...WITH STEERING FLOWS OUT OF THE ENE...BELIEVE SOUTH-CENTRAL
DESERTS SHOULD CONTINUE WITH A THREAT OF STORMS WELL INTO THE NIGHT.
AFTER TONIGHT...MODELS SETTLE VORT TROUGH ALONG THE AZ/NM BORDER.
THIS POSITION WILL PROBABLY KEEP MUCH OF ERN CWFA UNDER THE GUN FOR
STORMS THRU TOMORROW. PRESENCE OF DEBRIS CLOUDS FROM TONIGHTS TSTM
ACTIVITY COULD SERVE TO PUT A DAMPER ON RENEWED STORMS WEDNESDAY.
BECAUSE OF THIS...WILL JUST KEEP LOW GRADE CHANCE POPS IN PLACE INTO
TOMORROW NIGHT FOR MARICOPA COUNTY EWD. BY THURSDAY...AZ/NM VORT
TROF GETS NUDGED FURTHER TO THE E. THIS SHOULD RESULT IN A TEMPORARY
LULL IN STORMS FOR THURSDAY...EXCEPT OVER HIGHER TERRAIN OF ZONE 24.
BELIEVE WRN PORTION OF CWFA WILL SEE LESS ACTION THROUGH TOMORROW...
WITH HIGH PRESSURE RIGHT OVERHEAD PUTTING A CAP ON CONVECTION. TEMPS
OBVIOUSLY WILL BE COOLER NEXT COUPLE OF DAYS IN WAKE OF TSTM
ACTIVITY.

TURNING TO THE EXTENDED...MEDIUM RANGE MODELS DISAGREE SOMEWHAT IN
PLACEMENT OF UPPER RIDGE. WILL GO MORE IN LINE WITH NOGAPS/UKMET
WHICH PUTS HIGH BACK INTO FAVORABLE POSITION ALONG UT BORDER. SO...
WILL OPT TO MAINTAIN CHANCE POPS SOUTH-CENTRAL ARIZONA DURING THE
EXTENDED...KEEPING WRN CWFA DRY.     ESTLE

In the hours before

Local storm report, Aug 7, 6:07 PM PST, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX, AZ
707 PM MST TUE AUG 7 2001

TIME(MST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0435 PM    2 N DATELAND              AZ   WIND DAMAGE
08/07/01   YUMA                           POWER POLES BLOWN DOWN.
                                          REPORTED BY LAW ENFORCEMENT

0440 PM    WELLTON                   AZ   WIND DAMAGE
08/07/01   YUMA                           POWER POLES BLOWN DOWN.
                                          REPORTED BY SPOTTERS

0525 PM    ROLL                      AZ   WIND DAMAGE
08/07/01   YUMA                           FOUR POWER POLES BLOWN
                                          DOWN. TRAILER DAMAGED.
                                          REPORTED BY LAW ENFORCEMENT

The radar

The Yuma radar (KYUX), 97 km away, was scanning. The volume nearest the first event began at 02:36 UTC.

Open the radar archive at this moment

Event by event

1 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Imperial

When: August 7, 6:35 PM PST
Where: Imperial County, 4 mi SW of Imperial
Property damage: $10,000
Reported by: LAW ENFORCEMENT
Coordinates: 32.817, -115.617

Severe thunderstorm wind gusts blew down several power poles.

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

Every storm in California in 2001 Every state in 2001 This day in weather history Warnings in California, August 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: 5262269.