Alert archive / Nevada / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 915

September 1, 20034 counties in Nevada

The Storm Prediction Center issued this severe thunderstorm watch at Sep 1, 2003, 1:25 PM PDT for 4 counties in Nevada. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Sep 1, 2003, 1:25 PM PDT (20:25 UTC)
Expired
Sep 1, 2003, 7:00 PM PDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Elko County, NV, Eureka County, NV, Lander County, NV, White Pine County, NV

Warnings issued inside it

1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Sep 1, 3:37 PM PDTSevere Thunderstorm WarningLKNWhite Pine53 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Elko, NV (KLKN), launched 12:00Z, 8.4 hours before the alert went out and 105 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, Elko, NV at 12:00Z on 2003-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 joules per kilogram.LCLLFCEL10008507005003002001001 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, Elko, NV at 12:00Z on 2003-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.193958Sfc1 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
29 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1100 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 1, 12:42 PM PDTMesoscale DiscussionSPCEureka, White Pine2 hr
Sep 1, 3:55 PM PDTMesoscale DiscussionSPCEureka, Lander, White Pine2 hr

Nearby

Severe Thunderstorm Watches in Nevada, 2003Every severe thunderstorm watch in 2003

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.