Hackers' Pub

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

earthling @appassionato@mastodon.social

11/12/2025, 8:28:13 AM

Public

I didn't know you could see gravity waves...

Gerrit Venema 🇪🇺🌍🍉 @gvenema@fairmove.net

11/12/2025, 9:09:17 AM

Public

@appassionatoearthling

Didn't in this way. But they are visible in clouds.

This is from NOAA
https://www.nesdis.noaa.gov/news/cloud-streets-and-gravity-waves-the-mid-atlantic

You can see the waves in the clouds on top of the Appalachians. A steady wind perpendicular over mountain ridges will do it.

I heard that glider planes also make use of them for extremely long flights.

Satellite image of clouds over the northwest Atlantic and northeast US.

Wispy, parallel lines of clouds appear off the coast of the Mid-Atlantic and Southeast U.S. in this image captured by the NOAA-20 satellite on Nov. 28, 2018

There is a gap between the coastline and area where the cloud rows begin. Skies are clear near the coast.

Over land, we can also see multiple rows of parallel clouds over the Appalachians, from western Virginia to Pennsylvania.

If you have a fediverse account, you can quote this note from your own instance. Search https://fairmove.net/users/gvenema/statuses/115535941330435332 on your instance and quote it. (Note that quoting is not supported in Mastodon.)