[gradsusr] 500 hpa & Jetstream

Stephen McMillan smcmillan at planalytics.com
Sun Apr 26 15:28:15 EDT 2015

It would help if you shared the portion of your script that you used to
attempt doing the 500mb height charts. What is the snag?  What GrADS error
are you getting?  What are you trying to get your code to do?

 Whether you need to define them depends on how you're using them.
Following is a simple sample, assuming I've opened the gfs 0p25:

'set lev 500'
'set clevs 5160 5280 5400 5520 5640'
'set ccols 9 4 11 3 7'
'd hgtprs(t=5)'

You can also define it first...
'define hgt500=hgtprs(t=5)'
'd hgt500'

Stephen Mc

On Sun, Apr 26, 2015 at 9:53 AM, Chorley Weather <
weatherstu at chorleyweather.com> wrote:

> Hi guys,
> Still rather new to grads but have managed to create some good charts
> running the GFS 0.25, however, I have hit a snag on the 500mb height chart.
> Ive scripted all the colour and shading, including the contour bar but the
> hgt500 code will not work. Does this need defining and if so can someone
> please share the definition. Also I'd love a jet stream chart, however, I
> am also struggling with that. Any info would be much appreciated.  I've
> attached my precip & rainfall chart to show I'm not completely without hope
> :)
> Thanks in advance,
> Stuart.
> --
> Chief Forecaster & Owner
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> gradsusr at gradsusr.org
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