AWOC Skew-T Logo Panel

Skew-T Diagram from Boise, ID

#3 Boise, Idaho

CAPE:

 Weak: 379 J/kg, nice low level lapse rates though.

Deep Layer Shear:

 Decent: 0-6 km shear 25-30 knots, but there are 75 knot winds at 10 km.

Mid-level Lapse Rates:

 Good: nearly dry adiabatic up until almost -20C

Freezing Level:

 15.3 kft

Overall Threat of Severe Hail:

 Slight: Not a lot of CAPE or shear, but combined with the lapse rates this deserves a slight severe hail threat.

Summary of the Event:

Date of Sounding: 27 July 2003 @ 00 UTC
A cluster of severe thunderstorms initiated ahead of an approaching upper level short wave trough. 2.00 inch hail fell in extreme eastern Oregon at 23 UTC, and 1.00 inch hail at 00:05 UTC in western Idaho. The event as a whole was described as a "massive outbreak" in E. Oregon and W. Idaho.

Go to Next SoundingGo to Previous SoundingReturn to Main Page