Alert archive / California / Mesoscale Discussions in 2005

Mesoscale Discussion 1902

July 30, 20054 counties in California; Clark County, Nevada

The Storm Prediction Center issued this mesoscale discussion at Jul 30, 2005, 12:12 PM PDT for 4 counties in California; Clark County, Nevada. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jul 30, 2005, 12:12 PM PDT (19:12 UTC)
Expired
Jul 30, 2005, 2:45 PM PDT
In force
3 hr
Issued by
the Storm Prediction Center

Counties Imperial County, CA, Riverside County, CA, San Bernardino County, CA, San Diego County, CA, Clark County, NV

The nearest sounding before it

Edwards AFB, CA (KEDW), launched 12:00Z, 7.2 hours before the alert went out and 161 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, Edwards AFB, CA at 12:00Z on 2005-07-30Temperature 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, Edwards AFB, CA at 12:00Z on 2005-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939Sfc1 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
3384 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
20 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 California, 2005Mesoscale Discussions in Nevada, 2005Every mesoscale discussion in 2005

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.