Alert archive / Nevada / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 16, NWS Elko, NV

July 17, 2002Eureka County, Humboldt County, Lander County, Nevada

NWS Elko, NV issued this severe thunderstorm warning at Jul 17, 2002, 2:56 PM PDT for Eureka County, Humboldt County, Lander County, Nevada. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 17, 2002, 2:56 PM PDT (21:56 UTC)
Expired
Jul 17, 2002, 4:00 PM PDT
In force
64 min
Issued by
NWS Elko, NV
Area
Counties, with a storm outline in the text

Counties Eureka County, NV, Humboldt County, NV, Lander County, NV

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, 9.9 hours before the alert went out and 172 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 2002-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Reno, NV at 12:00Z on 2002-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.19395878Sfc1 km3 km6 km9 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
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.

305 
WUUS55 KLKN 172156
SVRLKN
NVC011-013-015-172300-

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

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN EUREKA COUNTY IN NEVADA
  THIS INCLUDES THE CITIES OF...PALISADE...EMIGRANT PASS...DUNPHY...
  CRESCENT VALLEY...BEOWAWE
  EXTREME SOUTHEASTERN HUMBOLDT COUNTY IN NEVADA
  NORTHEASTERN LANDER COUNTY IN NEVADA
  THIS INCLUDES THE CITIES OF...BATTLE MOUNTAIN...ARGENTA

* UNTIL 400 PM PDT

* AT 251 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES WEST OF CRESCENT VALLEY...MOVING NORTH
  AT 15 MPH.

STRONG DAMAGING WINDS IN EXCESS OF 60 MPH ARE LIKELY WITH...AND 
AHEAD OF THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER UNTIL THE 
STORM PASSES.

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

LAT...LON 4037 11705 4040 11621 4098 11617 4100 11708

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 Elko, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 17, 2:00 PM PDT, 56 minutes earlier.

Area forecast discussion, Jul 17, 2:00 PM PDT, 56 minutes before
NORTHERN GREAT BASIN FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ELKO NV
200 PM PDT WED JUL 17 2002

.SYNOPSIS...LOW PRESSURE OFF THE CALIFORNIA COAST WILL MOVE
ONSHORE TODAY AND ACROSS THE GREAT BASIN THURSDAY AND FRIDAY.
THIS WILL KEEP A CHANCE OF SHOWERS AND AFTERNOON THUNDERSTORMS
AROUND EACH DAY WITH TEMPERATURES NEAR NORMAL. HIGH PRESSURE WILL
BUILD IN FROM THE SOUTHWEST SATURDAY THROUGH TUESDAY WITH A GRADUAL
TREND TOWARD DRIER WEATHER.

.DISCUSSION...SHORT TERM FORECAST PROBLEM WILL BE EVENING CONVECTION
ACROSS ENTIRE CWA. VIS PIX SHW CONVECTION RAPIDLY DEVELOPING IN
DESTABLIZED AREA NRN NYE CTY AHEAD OF A MESOSCALE FEATURE FROM
EARLIER -TSRA IN SRN NV. MORE STABLE AIRMASS IN EKO CTY FINALLY
DESTABILIZED ENOUGH WITH INCRSD SPEED SHEAR ACROSS THE NRTH AND
BETTER DIRECTIONAL SHEAR WEST. MANY OUTFLOW BOUNDARIES ALSO
INITIATING CONVECTION WITH SOME KLRX VELOCITY SIGNATURES AROUND 40KTS
ABV SFC. 18Z MESO ETA IS STRONGER WITH 1ST VORT LOBE OR SPOKE AS IT
EJECTS AROUND THE LOW THROUGH NE NEVADA BTWN 06Z-21Z THU. 60KT SPEED
MAX GIVES DECENT COUPLET AROUND THE UPPR LOW TONIGHT INTO THU SO WILL
KEEP SCT CONVECTION IN ALL ZONES OVERNIGHT. BY THU AIRMASS REMAINS
JUST AS MOIST AND UNSTABLE ACROSS CWA THU WITH MDL SNDINGS SHWING
MOIST AXIS BELOW 600MB T0 700MB SO SCT MOIST CONVECTION LIKELY AGAIN.
ON FRIDAY MESO ETA DIVERGES FROM PREV ETA/AVN BY SLOWING THE
WEAKENING S/WV TROUGH OVR CNTRL NEVADA AND KEEPING IT FARTHER SOUTH.
THIS LEADS TO MORE CONVECTION POSSIBLE INTO CNTRL ZONES AS WELL AND
WILL KEEP POPS AGAIN ACROSS ALL CWA.

IN THE LONG TERM...AVN BRINGS ANOTHER WEAKER NEG TILTED S/WV TROUGH
INTO SCNTRL NV SUN. MONSOON MOISTURE STILL WRAPS AROUND THE S/WV
INTO NV SO SLGHT CHC LOOKS WARRANTED SINCE FLOW IS STILL WEAK AND
MID LVL DRYING FARTHER WEST. 12Z AVN IS STRONGER WI THIS FEATURE EVEN
INTO MONDAY SO WILL KEEP POPS IN ZONES UNTIL THEN. TUE AND WED LOOK
TO BE DRYING DAYS ALTHOUGH MRF OUT TO LUNCH RETROGRADING HIGH
FARTHER WEST INTO ERN PACIFIC. WILL KEEP MOST ZONES DRY TUE/WED. SLA

.EKO...NONE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 2:20 PM PDTSevere Thunderstorm WarningLKNEureka, Lander40 min

Nearby

Severe Thunderstorm Warnings in Nevada, 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; the sounding from the Mesonet's radiosonde archive.