Nevada, 2002

Damaging Winds in Nevada, July 12, 2002

July 12, 2002 · NWS REV · 3 events in 2 counties and zones

A line of severe thunderstorms moved through southern Washoe and northern Lyon County, NV between 3:30 and 4:30 pm PDT. Numerous spotter reports of 3/4 inch hail in Cold Springs and Sun Valley.

Where it happened

Every event with a place to put it; 2 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
$50,000
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.

What happened

The episode as NWS REV wrote it up.

A line of severe thunderstorms moved through southern Washoe and northern Lyon County, NV between 3:30 and 4:30 pm PDT. Numerous spotter reports of 3/4 inch hail in Cold Springs and Sun Valley. Several power poles and four small trailers were destroyed by high winds near Dayton.

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 Reno, NV wrote its last area forecast discussion before the first event at Jul 12, 1:45 PM PST, 45 minutes earlier.

Area forecast discussion, Jul 12, 1:45 PM PST, 45 minutes before
WESTERN NEVADA AND EASTERN CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
245 PM PDT FRI JUL 12 2002

DEEP SOUTHEAST FLOW ALONG THE SIERRA AND WESTERN SLOPES PUSHING
MOIST UNSTABLE AIR NORTHWEST.  VERY LITTLE DYNAMICS ASSOCIATED WITH
THIS CONVECTION SO DEVELOPMENT MAINLY BASED ON OROGRAPHIC AND TSTMS
OUTFLOW TRIGGERS.  BECAUSE OF THE LACK OF DYNAMICS CONVECTION SHOULD
GRADUALLY DIMINSH TOWARDS SUNSET.  GUSTY WINDS LIKELY THIS EVENING
WITH THIS CONVECTION.

ANOTHER ROUND OF CONVECITON SATURDAY.  THE MODELS DO HAVE A S/W
ASSOCIATED WITH THIS THAT MOVES OVER THE AREA SATRUDAY NIGHT.  THAT
WILL LIKELY MAINTAIN THE CONVECTION OVERNIGHT SO WILL THROW IT IN
DURING THE NIGHT.  THEN THE AVN HAS THE HIGH PUSHING EAST GRADUALLY
ENDING UP IN THE ROCKIES.  A TROF WITH DRY SOUTHWEST FLOW
ESTABLISHES ALONG THE COAST SO WE WILL GRADUALLY DRY OUT.  HAVE
PUSHED THE TSTMS EAST AND SHOULD AFTER SUNDAY.

IN THE EXTENDED...FOR THE TUE THROUGH FRI PERIOD WILL BEGIN TO LEAN
MORE TOWARD A GRADUAL DRYING TREND IN LINE WITH CONSISTENT AVN RUNS
AND SHIFT TSTM ACTIVITY TOWARD THE SOUTH AND EAST. ECMWF TRYING TO
GRADUALLY SHIFT PERSISTENT RIDGE ACROSS AREA SLOWLY E TO THE EASTERN
GREAT BASIN TUE AND WED AND MORE TOWARD THE NORTHERN PLAINS TOWARD
THE END OF THE WEEK.  AVN FOR TUES AND WED ALSO CONTS TO BRING DRIER
SW FLOW INTO N AND W PTNS CWA. WILDCARD IS...AS MENTIONED IN
PREVIOUS DISCUSSION...WHETHER REMNANT TROPICAL MOISTURE FROM TS
CRISTINA MIGHT BE ENTRAINED INTO AREA FOR MID WEEK. PREVIOUS FCST
KEPT CHANCE POPS ALL ZONES WITH THIS REASONING BUT WILL LEAN MORE
TOWARD AVN/MRF TREND OF DRIER FCST MAINLY N AND W. BY THUR AND FRI
THIS MEANS THAT WILL KEEP CHC POPS ONLY IN MONO AND MINERAL
COUNTIES. JAH

.REV...RED FLAG WARNING UNTIL 800 PM FOR ALL FIRE WEATHER ZONES.

The radar

The Reno radar (KRGX), 59 km away, was scanning. The volume nearest the first event began at 22:27 UTC.

Open the radar archive at this moment

Event by event

3 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Lyon

When
July 12, 2:30 PM PST to 3:00 PM PST
Where
Lyon County, Dayton
Property damage
$50,000
Reported by
BROADCAST MEDIA
Coordinates
39.233, -119.583

Several downed power poles and four small trailers destroyed.

Thunderstorm Wind, Washoe

When
July 12, 2:30 PM PST to 2:45 PM PST
Where
Washoe County, 5 mi NW of Reno Stead Arpt
Reported by
TRAINED SPOTTER
Coordinates
40.665, -119.664 (the zone’s center; the record gives no point)

3/4 inch hail

Thunderstorm Wind, Washoe

When
July 12, 3:00 PM PST to 3:15 PM PST
Where
Washoe County, Sun Vly
Reported by
TRAINED SPOTTER
Coordinates
40.665, -119.664 (the zone’s center; the record gives no point)

3/4 inch hail

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 Nevada in 2002Every state in 2002This day in weather historyWarnings in Nevada, July 2002

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: 5314617, 5314618, 5314616.