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Windy.com

windy.com

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Re: Windy.com

#201

Post by lbrindze »

MayorMonty wrote: post #58

I imagine something like this could be a fantastic tool to teach about differential equations and their applications. Just looking at you can see specific hallmarks (sources and sinks), and how that sort of analysis can have super-cool uses. Does meterology use differential equations to model wind?

All of the big agency (NWS, ECMWF, ICON, etc.) use physical models to create the large gridded forecast products. These models work by solving differential equations so your intuition here is spot on!

Re: Windy.com

#202

Post by lbrindze »

spoonjim wrote: post #31

This looks like the wind hits the West Coast of the United States and "turns" southwards. Is that accurate? If so, what causes it to do that?

High pressure over the north east pacific combined with the Coriolis effect. Also the land sea border has a big influence here in this case in particular.

Re: Windy.com

#203

Post by C19is20 »

sva_ wrote: post #11
ortusdux wrote: post #5

They have been my preferred weather source for a few years now. Forecasting is spotty in my area, but they have a feature where you can quickly compare 4 weather models, which tends to give a good overview. They also have my favorite android widget.

> but they have a feature where you can quickly compare 4 weather models meteoblue.com offers 18 models if you click on 'MultiModel'. I found them to be very reliable. windy.com is cool though, respect to the Czech founder https://en.wikipedia.org/wiki/Ivo_Luka%C4%8Dovi%C4%8D

+1 for meteoblue.

Re: Windy.com

#204

Post by ISL »

mmaunder wrote: post #29

Windy is great. The map is appealing, but be sure to check out the forecast view for a particular location. Also make sure you try different locations. I'm in the Salish Sea on Orcas Island in the San Juans and because we have a lot of topography here mixed with ocean, we have a lot of local effects, contour winds and so on and there are big differences between locations. Also note that Windy can get it wrong. I grew…

If you're in the Pacific Northwest, specifically Washington/Western Washington, then UW's weather models reach much higher spatial resolution than Windy appears to do.

https://a.atmos.washington.edu/mm5rt/

I recommend starting with the 4km or 1.3km WRF-GFS model and looking at something like 3hr Precip.

Re: Windy.com

#205

Post by TrisQuinoline »

algo_trader wrote: post #164
santosh898 wrote: post #155

https://earth.nullschool.net/

Off topic: I am interested in off-shore solar resources. Are there raw historic datasets or nice visualization for solar irradiation including over seas and oceans ?

There is a startup in Norway called Glint Solar that may help. They serve the floating solar industry with geospatial tools and data, both on reservoirs and offshore. If you can expand a bit on your questions, there may be more resources to point to.

Re: Windy.com

#206

Post by fencepost »

Apotheos wrote: post #188
semi-extrinsic wrote: post #158

Earlier quoted context omitted.

I use an Android weather widget called Meteogram Pro. It supports pulling in and displaying METAR data, among a thousand other options. You can make plots of things like thunderstorm probability, thickness and altitude of different cloud layers, azimuth and elevation for all planets in the solar system, pollen index, tide height, you name it.

Can you let me know which developer it is? There are a few with the almost exact same names. Thanks!

https://play.google.com/store/apps/details?id=com.cloud3squa...

There's also a non pro version, but I'm not clear on the differences because I still have a decade or more worth of the old system credits bought to support what's always been a great app/widget.

Re: Windy.com

#207

Post by sealaska »

transportguy wrote: post #187
sealaska wrote: post #156

Earlier quoted context omitted.

That makes a lot of sense. I sail in SE Alaska. You'd be surprised how many people make their living on the water up here, but their understanding of forecasting seems to amount to "download windy app"! Anyways, the word ensemble is new vocabulary for me when it comes to forecasting - things are making more sense knowing what an ensemble is.

Ensembles aren't used much outside of competition or serious industry... windy/predictwind/CMAP have usually more than enough weather for the average boater

No argument from me there! But when the forecast completely misses in SE Alaska, or one forecast model displayed in Windy is way different than others, I naturally get curious as to what happened, so have been more interested in the nuts and bolts than is probably practical.

I'm more comfortable on the water knowing terms like ECMFW, myself!

Re: Windy.com

#209

Post by bori5 »

It’s a cool app but I wonder why there’s no way to change font size, even on iPad when my eyes are waking up or other low light situation it can be hard to read the forecast panel in landscape mode etc..

Re: Windy.com

#210

Post by counters »

H8crilA wrote: post #143

Reminder that weather forecast apps/websites/anything are pretty much all just different UIs for the same underlying global forecasting models. With the NOAA's GFS being the most widely known one. You can find historic forecasts on NOAA's website going decades back.

Not all of them. But many are. It's important to be skeptical of claims made about th novelty and quality of weather forecasts from new/unknown players.
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