Alert archive / Nevada / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 10, NWS Reno, NV

July 13, 2002Douglas County, Nevada; Alpine County, California

NWS Reno, NV issued this severe thunderstorm warning at Jul 13, 2002, 4:06 PM PDT for Douglas County, Nevada; Alpine County, California. It was in force for 39 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 13, 2002, 4:06 PM PDT (23:06 UTC)
Expired
Jul 13, 2002, 4:45 PM PDT
In force
39 min
Issued by
NWS Reno, NV
Area
Counties, with a storm outline in the text

Counties Alpine County, CA, Douglas County, NV

The radar

The Reno radar (KRGX), 100 km from the middle of the area, began a volume at 23:05 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.

What was reported inside it

TimeReportWhereRemark
Jul 13, 4:32 PM PDTThunderstorm Wind 51 MGardnerville, NV

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 11.1 hours before the alert went out and 149 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-pSkew-T log-p diagram, Reno, NV at 12:00Z on 2002-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Reno, NV at 12:00Z on 2002-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -38 square meters per square second.193958Sfc1 km3 kmRMLM
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
2722 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-38 m²/s²
0-3 km storm-relative helicity
70 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.

051 
WUUS55 KREV 132306
SVRREV
CAC003-NVC005-510-132330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
404 PM PDT SAT JUL 13 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ALPINE COUNTY IN CENTRAL CALIFORNIA
  SOUTH CENTRAL CARSON CITY IN WESTERN NEVADA
  DOUGLAS COUNTY IN WESTERN NEVADA
  THIS INCLUDES THE CITY OF GARDNERVILLE

* UNTIL 445 PM PDT

* AT 400 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 13 MILES SOUTHEAST OF GARDNERVILLE...OR ABOUT 9
  MILES NORTH OF TOPAZ LAKE...MOVING NORTHWEST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GARDNERVILLE...6 MILES SOUTH OF JOHNSON LANE...8 MILES EAST OF
  GENOA AT 430 PM PDT

VERY LARGE HAIL...INTENSE LIGHTNING AND VERY HEAVY RAIN ARE 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.

IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS 
TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM 
WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN 
EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE 
THE THUNDERSTORM APPROACHES.

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

LAT...LON 3869 11965 3878 11945 3914 11967 3903 11993

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 13, 2:45 PM PDT, 1 hour 21 minutes earlier.

Area forecast discussion, Jul 13, 2:45 PM PDT, 1 hour 21 minutes before
WESTERN NEVADA AND EASTERN CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
245 PM PDT SAT JUL 13 2002

HIGH PRES MOVING OFF TO THE EAST THIS AFTERNOON WITH THE WESTERN
EDGE OF CONVECTION ON THE EAST SLOPES OF THE SIERRA MAINLY SOUTH OF
LAKE TAHOE.  THIS ACTIVITY SHOULD CONTINUE INTO THE EVENING HOURS.
NEW MODELS THIS MORNING HAVE NOW BEEN CONSISTENT WITH THE LAST FEW
RUNS IN BRING PACIFIC TROF ALONG THE WEST COAST BY TUES.  THIS
SHOULD PUSH MOST OF THE TSTM ACTIVITY EAST OUT OF THE CWA.
CONVECTION OVER SUN AND MON SHOULD BE LESS OVR WESTERN NEVADA.  WILL
DRY THE AREA OUT BY TUES.

IN THE EXTENDED...WEDNESDAY THROUGH FRIDAY...HIGH PRES HAS SHIFTED
EAST OF GREAT BASIN AS BROAD UPPER LEVEL TROF MOVES ONSHORE FOR WED.
ALTHO AVN HINTS AT INCREASED MOISTURE WITH THIS FEATURE APPROACHING
FAR NW NV...WILL NOT INTRODUCE POPS THERE ATTM. MDT SW FLOW IN
ADVANCE OF TROF OFF CA COAST WILL KEEP DRIER AIR ACRS NRN SIERRA AND
WESTERN GRT BASIN WED ALG WITH COOLER TEMPS. AVN INDICATES SPLIT
FLOW FOR THUR WITH WEAK TROF ACROS AREA AND STRONGER SW FLOW BOTH TO
OUR NORTH AND SOUTH. WITH LITTLE CHANCE FOR MSTR TO RECOVER WILL
KEEP THUR DRY AS WELL.  FOR FRI AND SAT WILL RETAIN CURRENT MENTION
OF SLIGHT CHANCE THUNDERSTORMS ALL ZONES EXCEPT CHANCE FAR SOUTH AS
TROF MOVES INLAND ACROSS CA AND WRN GRT BASIN. WEAK FLOW ALOFT AND
AND DVLPG S-SE FLOW AT MID/UPR LEVELS WILL ALLOW MSTR TO BEGIN TO
RECOVER SOMEWHAT. MRF DEVELOPS CUTOFF UPR LOW SRN CA COAST FOR
WEEKEND WHICH WOULD FAVOR CHC PCPN ACROSS AREA AS WELL ESPECIALLY
SOUTH. LATEST DISCUSSIONS FROM TSPC AND LASTEST AVN INDICATE THAT TS
CHRISTINA MAY DRIFT W-NW AND NOT GET CAUGHT UP IN WESTERLIES SO
REMNANTS MAY NOT BE A FACTOR FOR END OF WEEK. TEMPS WILL RETURN TO
NEAR NORMAL FOR END OF WEEK AND THROUGH WEEKEND.

.REV...NONE.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 1:54 PM PDTSevere Thunderstorm WarningREVLyon, Storey, Washoe51 min
Jul 13, 3:03 PM PDTSevere Thunderstorm WarningREVWashoe27 min
Jul 13, 3:28 PM PDTFlash Flood WarningREVDouglas, Lyon, Storey, Washoe2 hr
Jul 13, 4:37 PM PDTSevere Thunderstorm WarningREVPershing, Washoe38 min
Jul 13, 4:45 PM PDTSevere Thunderstorm WarningREVDouglas, Washoe45 min

Nearby

Severe Thunderstorm Warnings in Nevada, 2002Severe Thunderstorm Warnings in California, 2002Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.