Alert archive / Nevada / Mesoscale Discussions in 2007

Mesoscale Discussion 1403

July 6, 20077 counties in Nevada; 8 counties in Oregon

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2007, 12:56 PM PDT for 7 counties in Nevada; 8 counties in Oregon. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jul 6, 2007, 12:56 PM PDT (19:56 UTC)
Expired
Jul 6, 2007, 3:30 PM PDT
In force
3 hr
Issued by
the Storm Prediction Center

Counties Douglas County, NV, Humboldt County, NV, Lyon County, NV, Mineral County, NV, Pershing County, NV, Storey County, NV, Washoe County, NV, Baker County, OR, Crook County, OR, Grant County, OR, Harney County, OR, Lake County, OR, Umatilla County, OR, Union County, OR, Wheeler County, OR

The radar

The Reno radar (KRGX), 246 km from the middle of the area, began a volume at 19:59 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, 7.9 hours before the alert went out and 283 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 2007-07-06Temperature 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 2007-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -54 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3977 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
-54 m²/s²
0-3 km storm-relative helicity
55 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.

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Nearby

Mesoscale Discussions in Nevada, 2007Mesoscale Discussions in Oregon, 2007Every mesoscale discussion in 2007

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.