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Re: [STORMREPORTS] Severe T-Storm At WeatherMatrix HQ

From: Jesse Ferrell (WeatherMatrix) (jesse{at}weathermatrix.net)
Date: Thu Aug 28 2003 - 20:13:50 EDT

I have posted the following additional information to a new webpage along
with additional imagery:
http://www.weathermatrix.net/2003/0828/

Graphs from my weather station (keep in mind I was on the other side of
town which did not experience the core of the storm) indicated the severity
of the storm -- for 15 minutes, the Solar sensor dropped to 0 WM2 -- the
solar sensor could detect no incoming light -- which is the equivalent of
darkness experienced at 8pm or 6am this time of year. This storm also
caused a large pressure jump, from 29.98" Hg before to 30.07" during and
back to 29.98" after. The temperature also fell nearly 10 degrees in a
couple of minutes. The lighting detector registered over 800 "lightning
counts" in one minute at 10:42 am and over 100,000 counts for the day.
These are near all-time records and are unprecedented for one storm.

KUNV R1 At 70dbZ
KUNV VIL Peak
KUNV Echo Tops Peak
Storm Total Shows Track
325 Lightning Strikes
Metro Animation
KUNV R1 - 14:27Z
KUNV R1 - 14:22Z
KUNV R1 - 14:37Z
KUNV R1 - 14:42Z

At 08:38 PM 8/27/2003 -0400, Jesse Ferrell (WeatherMatrix) wrote:
>We had a heck of a storm late this morning in State College, PA, home of
>WeatherMatrix HQ. As usual, I didn't have any of my storm chasing
>equipment with me, but a friend of mine took some digital video from our
>location on the west side of town and I have asked him to give me a
>copy. A severe thunderstorm warning was issued for our county for this
>storm: http://www.weathermatrix.net/archive/severe/1649.html
>
>The storm looked very severe on radar (70dbz, 2.5" hail) when it was about
>50 miles west of us but as it descended the mountains to our west, it lost
>10dbz and 2" worth of the hail.
>
>However, as the storm was west of us, its core expanded to a VERY large
>area of heavy rain, so much so that it got darker outside than I have EVER
>seen it as the storm approached.
>http://www.weathermatrix.net/2003/0828/unvr1a.gif
>
>Here's a complete radar animation, I was positioned approximately at the
>center of the picture:
>http://www.weathermatrix.net/2003/0828/metroradaranim.gif
>
>It was really incredible, it looked like 9 o'clock at night. The street
>lights all came on and the local folks were very wary of the storm. It
>also had a LOT of lightning, with about 325 strikes detected in an 8-mile
>radius of WeatherMatrix HQ (this area only received about half the
>storm). Most of these strikes were within 20 minutes.
>http://www.weathermatrix.net/2003/0828/ltg.gif
>
>The thunder was constant and rolling. It appeared at first that its bark
>was worse than its bite, as it was very ominous, but it passed my location
>west of town with moderate winds, very heavy rain, a lot of lightning, but
>little reported damage. However the following storm reports were received
>by the National Weather Service:
>
>1035 AM STATE COLLEGE PA 1.00 INCH HAIL
>08/27/03 CENTRE ONE INCH HAIL FELL IN
> DOWNTOWN STATE COLLEGE
>
>1040 AM STATE COLLEGE PA WIND DAMAGE
>08/27/03 CENTRE 7 TO 8 TREES BLOWN DOWN ON
> BUSINESS ROUTE 322
>
>
>
>-- 

-- 
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Jesse Ferrell - Meteorologist / Webmaster / Founder - WeatherMatrix
6000 Weather Enthusiasts Can't Be Wrong! www.weathermatrix.net 

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