Alert archive / Nevada / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 20, NWS Reno, NV

July 17, 2002Washoe County, Nevada

NWS Reno, NV issued this severe thunderstorm warning at Jul 17, 2002, 3:35 PM PDT for Washoe County, Nevada. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 17, 2002, 3:35 PM PDT (22:35 UTC)
Expired: Jul 17, 2002, 4:15 PM PDT
In force: 40 min
Issued by: NWS Reno, NV
Area: Whole counties

County Washoe County, NV

The radar

The Reno radar (KRGX), 103 km from the middle of the area, began a volume at 22:39 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 10.6 hours before the alert went out and 174 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2800 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

684 
WUUS55 KREV 172235
SVRREV
NVC031-172315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
333 PM PDT WED JUL 17 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN WASHOE COUNTY IN WESTERN NEVADA
  THIS INCLUDES THE CITY OF INCLINE VILLAGE

* UNTIL 415 PM PDT

* AT 329 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM 6 MILES SOUTHEAST OF INCLINE VILLAGE...MOVING   
NORTH AT 20 MPH. THIS STORM WILL MOVE ACROSS THE MOUNT ROSE HIGHWAY 
BETWEEN 340 AND 4 PM. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  INCLINE VILLAGE AT 340 PM PDT
  WASHOE CITY AT 350 PM PDT

LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE IN 
THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A 
SUBSTANTIAL SHELTER.

REPORT DAMAGING WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Jul 17, 3:00 PM PDT, 35 minutes earlier.

Area forecast discussion, Jul 17, 3:00 PM PDT, 35 minutes before

WESTERN NEVADA AND EASTERN CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
300 PM PDT WED JUL 17 2002

TSTMS BREAKING OUT OVER MUCH OF CWA THIS AFTN WITH STRONGEST CELLS
OVER SIERRA AND WRN NV S OF I80. TSTMS FAIRLY FAST MOVING WITH MAIN
THREAT LARGE HAIL AND GUSTY WINDS. WEAK UPPER LOW AND VORT MAX OFF
CENTRAL CA CST NEAR SFO BAY AREA FORECAST TO MOVE SLOWLY ENE NEXT 24
HOURS INTO WRN NV BY THU AFTN. MORE TSTMS EXPECTED THURSDAY AFTN IN
VERY MOIST AND UNSTABLE AIRMASS. WHILE TODAYS TSTMS MORE SVR WITH
HAIL THURSDAYS STORMS WILL HAVE MORE FLASH FLOOD POTENTIAL. WILL
INCLUDE HEAVY RAIN WORDING IN MOST ZONES THURSDAY AFTN. VORT MAX
MOVES E OF AREA ON FRIDAY WITH LINGERING SHOWERS AND TSTMS ACROSS
NRN CWA FRIDAY AFTN. WEAK FLOW WILL ALLOW FOR MORE PM TSTMS AGAIN
SATURDAY WITH WEAK VORT FEATURES MOVING IN FROM OFF CA CST. CYLKE

IN THE EXTENDED PERIOD...THE MRF...CANADIAN AND NOGAPS BRING ANOTHER
UPPER LOW TO THE CA COAST BY SUNDAY AND MOVE IT SLOWLY NEWD ACROSS
NRN CA WITH A SOUTH FLOW ALOFT OVER OUR REGION. ON THE FLIP
SIDE...THE EXCEPTIONS ARE THE ECMWF AND UKMET  WHICH HOLD THE LOW
FARTHER OFFSHORE AND KEEP OUR REGION DRY. THE 12Z AVN GENERALLY
FOLLOWS UP ON THE MRF SOLUTION AND EVEN SLOWS THE LOW DOWN A
BIT...SO FOR THIS PACKAGE THE POPS WILL BE RAISED TO CHANCE CATEGORY
ON SUNDAY AND A SLIGHT CHANCE INTRODUCED FOR MONDAY. BY TUESDAY AND
WEDNESDAY RIDGE REBUILDS OVER CA/NV WITH DRYING CONDITIONS AND
VALLEY TEMPERATURES RISING TO AROUND 100 DEGREES ON BOTH DAYS. MJD

.REV...NONE.

In the hours before

Local storm report, Jul 17, 2:35 PM PDT, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO, NV
735 AM PDT WED JUL 17 2002

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

0143 PM    8 S INCLINE VILLAGE       NV   1.00 INCH HAIL
07/17/02   DOUGLAS                        REPORTED BY GLENBROOK FIRE
                                          DEPARTMENT

0149 PM    8 E BECKWOURTH            CA   .75 INCH HAIL
07/17/02   PLUMAS                         REPORTED BY SPOTTERS

0205 PM    INCLINE VILLAGE           NV   1.00 INCH HAIL
07/17/02   WASHOE                         REPORTED BY SPOTTERS

CJ

The office that day

Everything else NWS Reno, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 17, 2:03 PM PDT	Severe Thunderstorm Warning	REV	Washoe	42 min
Jul 17, 2:53 PM PDT	Severe Thunderstorm Warning	REV	Pershing	37 min

Nearby

Severe Thunderstorm Warnings in Nevada, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.