Alert archive / Oregon / Mesoscale Discussions in 2003

Mesoscale Discussion 2106

August 6, 2003Siskiyou County, California; Jackson County, Klamath County, Oregon

The Storm Prediction Center issued this mesoscale discussion at Aug 6, 2003, 10:50 AM PDT for Siskiyou County, California; Jackson County, Klamath County, Oregon. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Aug 6, 2003, 10:50 AM PDT (17:50 UTC)
Expired
Aug 6, 2003, 1:15 PM PDT
In force
2 hr
Issued by
the Storm Prediction Center

Counties Siskiyou County, CA, Jackson County, OR, Klamath County, OR

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 12:00Z, 5.8 hours before the alert went out and 44 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, Medford/Jackson, OR at 12:00Z on 2003-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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, Medford/Jackson, OR at 12:00Z on 2003-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
17 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
1006 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
72 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 Oregon, 2003Mesoscale Discussions in California, 2003Every 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.