Weekly Severe Weather Discussion

Severe Weather Discussion July 23 – 29, 2007.
Valid: 07/23/2007.

Highlights:

– Temperatures near normal this week.

– Isolated showers and thunderstorms are possible through Wednesday.

– Tropics are quiet, with some minor action a few days ago.

Probabilities:

– Severe Thunderstorms in Oklahoma: 10%
– Storm Chase: < 5%
– Winter Precip: < 5%

Discussion:

Tough to believe we are in late July as afternoon temperatures in Oklahoma City are in the low 80s. Normal high for today is 94F.

The general atmospheric pattern will remain the same this week with a longwave ridge in the west and a small closed low in the east. The ridge will be elongated from southern California to the north central U.S. This will place Oklahoma under northeasterly flow aloft. A few weak shortwave trofs will traverse the region the next few days. Isolated severe thunderstorms are possible due to increasing directional shear and seasonable instability.

Little change noted throughout the week as the upper ridge will remain across the western U.S. The 594dm ridge has yet to build into Oklahoma and at this point do not see it happening this week. As such, temperatures should be near normal. The warmest part of the year continues for a few more weeks.

NHC was watching a system near Bermuda, but it has since dissipated. Some activity is still possible and would be seasonable. The max tropical activity does not occur until September 10th.

For more information, weather news, weather blog, and chase summaries go to http://www.hook-echo.com.

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About Putnam Reiter

Putnam has been storm chasing since 1990 and is a co-founder of Hook-Echo.com. For his day job, Putnam works in emergency management for information technology.
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