Alert archive / Nevada / Mesoscale Discussions in 2003

Mesoscale Discussion 2080

August 4, 2003Humboldt County, Pershing County, Nevada; Klamath County, Lake County, Oregon

The Storm Prediction Center issued this mesoscale discussion at Aug 4, 2003, 12:33 PM PDT for Humboldt County, Pershing County, Nevada; Klamath County, Lake County, Oregon. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 4, 2003, 12:33 PM PDT (19:33 UTC)
Expired: Aug 4, 2003, 3:00 PM PDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Humboldt County, NV, Pershing County, NV, Klamath County, OR, Lake County, OR

The nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 7.6 hours before the alert went out and 298 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: 266 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1316 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 239 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 4, 4:12 PM PDT	Mesoscale Discussion	SPC	Crook, Deschutes, Douglas, Jackson, Jefferson, Klamath and 4 more	2 hr

Nearby

Mesoscale Discussions in Nevada, 2003 Mesoscale Discussions in Oregon, 2003 Every mesoscale discussion 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.