# Negretti & Zambra pocket forecaster

**URL:** <https://community.tempest.earth/t/negretti-zambra-pocket-forecaster/20235>\
**Category:** General\
**Created:** [February 27, 2023, 8:44pm UTC](https://community.tempest.earth/t/negretti-zambra-pocket-forecaster/20235 "2023-02-27T20:44:31Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![sunny](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/sunny/32/16368_2.png) [@sunny](https://community.tempest.earth/u/sunny)\
**Post date:** [February 27, 2023, 8:44pm UTC](https://community.tempest.earth/t/negretti-zambra-pocket-forecaster/20235/1 "2023-02-27T20:44:31Z")

</div>

Some time ago there was a discussion inside a discussion about Zambretti weather codes. I recreated and redesigned a version of it, and just now made it available here [https://www.instructables.com/Negretti-Zambra-Pocket-Weather-Forecaster/](https://www.instructables.com/Negretti-Zambra-Pocket-Weather-Forecaster/).  
I’m not very well social connected in meteorology, but feel free to share a link to this in other media.

 ![replica](https://us1.discourse-cdn.com/flex020/uploads/sws/original/2X/0/08f6927d2ba9ce96dbc3f1fa72ac1eda2171a3f4.jpeg)

---

<div class="post-metadata">

**Author:** ![andyhudsonsmith](https://avatars.discourse-cdn.com/v4/letter/a/a88e4f/32.png) [@andyhudsonsmith](https://community.tempest.earth/u/andyhudsonsmith)\
**Post date:** [February 28, 2023, 4:06pm UTC](https://community.tempest.earth/t/negretti-zambra-pocket-forecaster/20235/2 "2023-02-28T16:06:35Z")

</div>

This is brilliantly done - congrats, really nice.

Andy

---

<div class="post-metadata">

**Author:** ![sunny](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/sunny/32/16368_2.png) [@sunny](https://community.tempest.earth/u/sunny)\
**Post date:** [February 28, 2023, 6:52pm UTC](https://community.tempest.earth/t/negretti-zambra-pocket-forecaster/20235/3 "2023-02-28T18:52:15Z")

</div>

a question is how to adapt this for the southern hemisphere. I can think of two opitons, reversing the wind direction scale, or swapping all occurrences of South with North and vice versa in the wind direction scale. I didn’t think hard enough yet to come up with the right answer.

---

<div class="post-metadata">

**Author:** ![mabeatty1978](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/mabeatty1978/32/15139_2.png) [@mabeatty1978](https://community.tempest.earth/u/mabeatty1978)\
**Post date:** [March 1, 2023, 1:15am UTC](https://community.tempest.earth/t/negretti-zambra-pocket-forecaster/20235/4 "2023-03-01T01:15:25Z")

</div>

This is pretty cool, I’ve never heard of it. Has my grears turning to model this into a 3D printed case, stick a NodeMCU 8266 in it and either display the current conditions with an LED light or putting a 360 degree continuous rotation servo in it with a needle.

---

<div class="post-metadata">

**Author:** ![storm\_tracker](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/storm_tracker/32/5771_2.png) [@storm\_tracker](https://community.tempest.earth/u/storm_tracker)\
**Post date:** [March 1, 2023, 6:34am UTC](https://community.tempest.earth/t/negretti-zambra-pocket-forecaster/20235/5 "2023-03-01T06:34:17Z")

</div>

The Negretti & Zambra (they combined their names to produce the **Zambretti** ) Forecaster

 ![Negretti & Zambra (Zambretti) Forecaster](https://us1.discourse-cdn.com/flex020/uploads/sws/original/2X/c/caa0760a6c0a8dc6a017eb8d4bb880e3f3d4ea1f.jpeg)

which is a weather device akin to the Sager Weathercaster

 ![image](https://us1.discourse-cdn.com/flex020/uploads/sws/original/2X/9/9a783d7879a23d7c7836f5cbdee4e0c46864b841.jpeg)

which is incorporated into the WF PiConsole (labeled **Sager**.) Both work on the principle of Buys-Ballots Law of Meteorology. . . Standing with your back to the wind. . .the Low Pressure area will generally be on your Left (in the Northern Hemisphere). In the Southern Hemisphere. . .the directions are reversed: Standing with your back to the wind. . .the Low Pressure will be on your Right and the High Pressure area will be to your Left.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex020/uploads/sws/original/3X/9/5/954d64c24c1612a76fabaaa3298be78bac443b7f.png) [@system](https://community.tempest.earth/u/system)\
**Post date:** [February 29, 2024, 6:34am UTC](https://community.tempest.earth/t/negretti-zambra-pocket-forecaster/20235/6 "2024-02-29T06:34:53Z")

</div>

This topic was automatically closed 365 days after the last reply. New replies are no longer allowed.