Re: Josh was there for Weather Nation
Posted by
Chris in Tampa on 11/3/2022, 9:03 pm
When it comes to surge, I thought there was less information available when it comes to other countries. (in terms of before the storm)
But in looking at the National Storm Surge Risk Maps:
https://www.nhc.noaa.gov/nationalsurge/
And the actual map here:
https://experience.arcgis.com/experience/203f772571cb48b1b8b50fdcc3272e2c
They now include more areas.
"What's New with Version 3
- Reprocessed U.S. Gulf and East Coast with latest SLOSH grids in 2021 and at an improved grid cell size
- Addition of Southern California, Guam, American Samoa, and Yucatan Peninsula Maps"-
It's still not everywhere, but Belize is included in those maps. I didn't realize they were. I didn't even bother to look before the storm.
The radar database does take a lot of time. I use three main public sources:
https://wrddev.mgm.gov.tr/Home/Wrd
https://www.rainviewer.com/coverage.html
https://www.eumetnet.eu/wp-content/themes/aeron-child/observations-programme/current-activities/opera/database/OPERA_Database/index.html
(last link you sometimes have to refresh the page multiple times to get it to work)
And then someone contacted me earlier this year that has an even more complete private database than those sources.
The first two don't often have coordinates that are exact. I can spend hours searching for just a single radar site. I've spent a day sometimes just trying to find one. But I pretty much always find what I'm looking for. Newer ones can be much harder to find because free satellite imagery just isn't recent enough.
The "About" link on on the menu on the map has information about how I go about finding the radars.
Offline, due to research, I have over 11,000 files (over 5GB of data) that includes imagery from radar sites and PDF files with more information. I have to take some of the imagery and measure radar returns in Google Earth to try to figure out how far to draw the range on my map. For Europe I often just use the OPERA database ranges, but for other places I have to find a source for the range or measure radar returns. Sometimes I have to wait until it rains far away from the radar and then come back to see how far the range goes. It's more complicated now that a lot of sites use composites rather than single site imagery I can measure.
This is the script that creates everything, where I add extra information for myself and others that want to use the database:
http://tropicalglobe.com/radar_database/tg_radar_database.txt
All of that is done manually.
I finally created various scripts that I use offline to process those four databases I mention and it comes up with which radar sites I have yet to add to my map. Since many of the coordinates in the first two databases are off, I have to do a lot of work to find some. And of course new radar sites are being added all the time. When it comes to other countries, some information is in other languages of course, so I have to search using search terms in that language and then translate stuff when needed.
And links change that need to be updated.
Because I have four databases to look through, and they have some closed radars, I am also adding closed radars to my map too if they are in these databases. That way when I use the script to see what I need to add, I don't keep seeing that I have yet to add some that are closed. The closed ones don't show up by default. (because some of those I have to review historical satellite imagery in Google Earth to see where they were when they might have been torn down for 10 or 15 years) But with those too, there are now over 1,700 radars. |
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PTC Fifteen -
cypresstx,
10/30/2022, 6:12 pm Post A Reply
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