Recast Systems

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@recast

Recast is a weather company. Our first product is precise weather modification

recastsystems.com Joined March 2013

33 Following 1.9K Followers 63 Posts

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Recast Systems @recast Aug 12

In the past 6 months we’ve produced a cheaper, more efficient seeding material, trained a hyper-resolution AI weather model, and operated 100+ cloud seeding flights for the governments of Texas and New Mexico.

Recast Systems is coming out of stealth. Here’s some of the research we’ve been working on. (1/n)

1:04

Recast Systems @recast 5d

NOAA retired the NAM last week. We thought it deserved to live on, so we ported it to the GPU and open-sourced it.

We’re running the 12 km CONUS NAM ourselves, four times a day (00/06/12/18Z, 84 h, started from GFS), with the hourly files free for anyone: same awphys GRIB2 shape as NOAA’s, so an old NAM fetcher just needs a new host.

woof-nam.recastsystems.com/index.html

The 12 km shape is in the WOOF API today, 5 km and 4 km CONUS this week, so you can run your own cycles any time from GFS or IFS.

Drew Verified account @DeepGuessr 5d

NOAA retired the NAM this week. We ported it to the GPU and it's back, better than ever: WOOF-NAM, open source.

- 12 km CONUS, all NAM physics, 24 h forecast in ~20 min on a single RTX 5090 (32 GB).
- 8 GPUs: 6 h in 92 s. Multi-card is bitwise to single card.
- 4 km CONUS, 24 h in under 9 min on 8 GPUs. 3 km nests anywhere on Earth (Europe, Japan, CONUS): 48 h in ~7 min on one card.

SStarts from the NAM analysis or GFS today, IFS open data in the next release. Beside the operational NAM from the same cycle it's hard to tell them apart (pics).

Today it needs one 32 GB card for the full 12 km CONUS; ~15 GB is the target, coming soon.

github.com/recastsystems/…

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Recast Systems @recast Sep 30

We open-sourced our GPU port of WRF and named it WOOF (Weather Observations and Operational Forecasting). We want everyone to have access to fast and cheap weather simulations.

Run your own simulations at woof.recastsystems.com

0:09

Olivia Li Verified account @oliviali_ Sep 30

We ported the government’s weather model (WRF) over to GPUs so it runs a magnitude faster and cheaper.

Here's a 250m resolution forecast of the fog is SF.

sf.recastsystems.com

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Recast Systems @recast Sep 1

Tropical storm Edouard makes landfall in Texas. We’re opening up our radar and storm tracking software to the public so everyone can track Edouard.

Recast Systems @recast Aug 24

Recast has developed a natural and biodegradable seeding material. We grow it ourselves.

Thanks to the @nytimes for covering some of our progress as we develop a new generation of materials, tools, and use cases for cloud seeding.