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    Jesse Ferrell

    Houston: We Have A Mesoscale Convective Vortex

    By Jesse Ferrell, Meteorologist/Community Director
    2/13/2008, 9:06:50 AM

    Blog reader "J" (who is not me) emailed me Monday night about a strange severe-looking circulation heading towards Houston, Texas. I investigated this yesterday and believe it to be a great example of a Mesoscale Convective Vortex, a type of low pressure system associated with a group of thunderstorms. Below is a radar from AccuWeather.com RadarPlus; more detailed radar loops can be downloaded* here.


    rp211z


    Despite the appearance of severity, MCVs [WikiPedia] are not usually associated with tornadoes, but can serve as the birthplace of future mesoscale convective systems (groups of thunderstorms without the low pressure center) or even tropical storms over water.

    Only one spotter report was received by The NWS [JessePedia]: "WHARTON COUNTY: PARKED 18 WHEELER BLOWN DOWN AT HIGHWAY 59 BY LOUISE."

    *Quicktime required. "Save Target As" required for IE.

    The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com

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    Jesse Ferrell