NOAA Snow Layer

November 29, 2023 18:19
4 comments

I've been using a custom source / layer for years which pulled from the NOAA Snow website.

It's no longer working, displaying "error encoding custom URL"

It was constructed per the guide which can be found here; https://hikingguy.com/how-to-hike/how-to-tell-if-there-is-snow-on-the-trail/

I can't figure out how to get it up and running again!! Any advice would be welcome. (Currently running the desktop level subscription)

Thanks!

Comments

4 comments

Orin Johnson
- December 06, 2023 01:28
NOAA moved the tool and shut down the previous site.

It looks like putting this into the Auto-Configure UR box should give you what you had.

https://mapservices.weather.noaa.gov/raster/rest/services/snow/NOHRSC_Snow_Analysis/MapServer

1
Michael
- December 13, 2023 01:02
When I try the auto-configure URL with that input, I get a warning:
- Server does not appear to support a compatible projection. Will try anyway, but this will probably not work.
Indeed the scaling is off vertically at all zoom levels and it's worse than just using a separate viewer unless you're super zoomed in. Has someone gotten this to work? What are your inputs?

The auto-configured URL it spits out from Orin's input is:
- https://mapservices.weather.noaa.gov/raster/rest/services/snow/NOHRSC_Snow_Analysis/MapServer/export?dpi=96&transparent=true&format=png32&bbox={left},{bottom},{right},{top}&bboxSR=EPSG:4269&imageSR=EPSG:4269&size={tilesize},{tilesize}&f=image&layers=show:0
I also tried reverse-engineering from a viewer (https://www.nohrsc.noaa.gov/interactive/html/map.html), but this has the same vertical scaling problem (and it isn't transparent):
- https://www.nohrsc.noaa.gov/interactive/html/map_only.php?var=ssm_depth&min_x={left}&min_y={bottom}&max_x={right}&max_y={top}&bgvar=none&shdvar=none&title=0&width={tilesize}&height={tilesize}
0
Michael
- December 05, 2024 04:27
Apparently all it took to get this working was to change the imageSR value. This works for me:
- https://mapservices.weather.noaa.gov/raster/rest/services/snow/NOHRSC_Snow_Analysis/MapServer/export?dpi=96&transparent=true&format=png32&bbox={left},{bottom},{right},{top}&bboxSR=EPSG:4269&imageSR=102100&size={tilesize},{tilesize}&f=image&layers=show:3
(Credit to https://tjasz.github.io/heatmap/)
1
Ben Normann
- December 07, 2024 16:12
This totally worked. Thank you! Hopefully others find this and find it useful!

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NOAA Snow Layer

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