Alert archive / Nevada / Mesoscale Discussions in 2017

Mesoscale Discussion 1419

July 25, 2017Mono County, California; 6 counties in Nevada

The Storm Prediction Center issued this mesoscale discussion at Jul 25, 2017, 11:11 AM PDT for Mono County, California; 6 counties in Nevada. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued
Jul 25, 2017, 11:11 AM PDT (18:11 UTC)
Expired
Jul 25, 2017, 12:45 PM PDT
In force
94 min
Issued by
the Storm Prediction Center
Chance of a watch
5%

Counties Mono County, CA, Churchill County, NV, Douglas County, NV, Esmeralda County, NV, Lyon County, NV, Mineral County, NV, Storey County, NV

The radar

The Reno radar (KRGX), 127 km from the middle of the area, began a volume at 18:12 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, 6.2 hours before the alert went out and 87 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 2017-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 67 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, Reno, NV at 12:00Z on 2017-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
67 J/kg
Mixed-layer CIN
-190 J/kg
Mixed-layer LCL
1790 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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Nearby

Mesoscale Discussions in Nevada, 2017Mesoscale Discussions in California, 2017Every mesoscale discussion in 2017

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.