[wxqc] Moisture Content

[Evan Bookbinder]

Just to avoid any confusion in Victor's post, there is no correlation
between VIL and hail probability/size...the latter variables come

VIL is a vertical integration (summation) of the amount of reflectivity
returns over a given "pixel". Its usefullness is really aged in an era where
we have quick acess to the various tilts/slices from the radar, but was used
as a quick glance to find the 'worst' heavy rain producers quickly.

Max values really depend on how VIL is calculated. Wunderground is using an
averaged 1x1 sq. km pixel with a 58 dBZ cap in the VIL calculation. Values
of 80-100 would be seen with really deep/intense storms in the summer. 71 is
very high.

Evan


> -----Original Message-----
> From: wxqc-bounces at lists.gladstonefamily.net 
> [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of 
> Victor Engel
> Sent: Tuesday, May 01, 2007 6:56 PM
> To: Discussion of weather data quality issues
> Subject: Re: [wxqc] Moisture Content
> 
> What I meant was VIL (vertically integrated liquid). The 
> storm currently at 71 Kg/m^2 is predicted by 
> weatherunderground to have a 100% chance of producing 
> damaging hail with size up to 2.75 inches.
> 
> On 5/1/07, Victor Engel <brillig at gmail.com> wrote:
> > I hope this isn't too far off-topic. I've just recently 
> discovered the 
> > wonderful animated radar images provided on weatherunderground.
> > Currently there are some storms exceeding the scale, which 
> maxes out 
> > at 70 Kg/m^2. Oh, wait a minute. The scale just added 
> another 5 Kg. I 
> > guess it's an adaptive scale. How high do these moisture 
> readings get?
> >
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