Monday, June 24, 2013

Severe Storms To Accompany Heat Through Mid Week

StormTrackerWx.com is monitoring consecutive chances for severe thunderstorms through mid week impacting the Midwest and Ohio Valley regions.

The ridge of high pressure contributing to excessive heat and humidity will continue to breakdown, as numerous mid level impulses eject lee of the Rockies.  The most prominent of these features will accompany a low level jet Tuesday-Wednesday.  This feature is forecast to veer to the north and east, with ongoing convection propagating eastward into Southern Ontario.

Meanwhile, strong diurnal heating will continue to destabilize the lower levels, with surface based CAPE values approaching or possibly exceeding 3,000 j/kg.  This will aid in further convection later in the day Wednesday, as a short-wave trough crests the Central U.S. ridge.



Strong to severe thunderstorms will likely accompany this feature.  Given modest dewpoints, steepening lapse rates, and a westerly flow aloft, any storm that does develop will be capable of producing locally heavy rain and damaging winds.  Large hail will also be possible.

Temperatures in the 80s and lower humidity values will follow with the passage of the surface cold front, Thursday-Friday.



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