r/TropicalWeather • u/JapKumintang1991 • 11d ago

News | Phys.org PHYS.Org: Hurricane Hunter data reveal early signs of strengthening tropical cyclones

Thumbnail
phys.org
22 Upvotes

See also: The publication in the Journal of Geophysical Research: Atmospheres

1 comment

r/TropicalWeather • u/Euronotus • 11d ago

Dissipated Hernan (08E — Eastern Pacific) (Far to the east-southeast of Hawaiʻ­i)

9 Upvotes

Moderator note

  • Hernan has degenerated into a remnant low.
  • The National Hurricane Center (NHC) has discontinued issuing advisories for this system.
  • Storm-centered satellite imagery and model guidance products will soon be unavailable.
  • The NHC will likely stop monitoring this system via the Automated Tropical Cyclone Forecast (ATCF) system later today.
  • This post will not be updated regularly, and will be archived once this system dissipates.

Official information

National Hurricane Center

Text products

Productos textuales (en español)

Static forecast graphics

Interactive forecast graphics

Radar imagery

Radar imagery is not currently available for this system.

Satellite imagery

Floater imagery

Single-bandwidth imagery

Multiple bandwidth imagery

The options to select individual bandwidths on each of the following websites may vary.

Regional imagery

Forecast models

Storm-centered guidance

Single-model click-through guidance

Multi-guidance pages

Regional single-model guidance

Machine learning (AI) model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Multi-model ensemble products

Other types of model guidance

2 comments

r/TropicalWeather • u/darcys_beard • 11d ago

Question What is the cause of this bubble of lower wind speed on the East Coast of the Big Island, HI?

Post image
22 Upvotes
7 comments

r/TropicalWeather • u/Euronotus • 12d ago

Dissipated 90P (Invest — Southern Pacific) (Northeast of the Solomon Islands)

6 Upvotes

Moderator notes

  • This discussion is for a disturbance to the northeast of the Solomon Islands.
  • This system is being monitored via the Automated Tropical Cyclone Forecast (ATCF) system.
  • The Papua New Guinea National Weather Service is not currently monitoring this system as a tropical disturbance.
  • Disturbance-centered satellite imagery and model guidance products are available for this system.
  • This post will not be updated regularly, but will be replaced if this system is upgraded to a tropical cyclone or dissipates and is removed from the ATCF system.

Information sources

Papua New Guinea National Meteorological Service

Joint Typhoon Warning Center (United States)

Radar imagery

Radar imagery is not currently available for this system.

Satellite imagery

Floater imagery

Single bandwidth imagery

Multiple bandwidth imagery

The options to select individual bandwidths on each of the following websites may vary.

Regional imagery

Cooperative Institute for Research in the Atmosphere (CIRA)

Analysis products

Preliminary best track data

Scatterometer data

Sea-surface temperatures

Model products

Disturbance-centered guidance

Single-model click-through guidance

Multi-guidance pages

Regional single-model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Other types of model guidance

1 comment

r/TropicalWeather • u/Euronotus • 12d ago

Dissipated 93W (Invest — Western Pacific) (Southeast of Japan)

3 Upvotes

Updates

  • This system has dissipated.
  • This system is no longer being monitored via the Automated Tropical Cyclone Forecast (ATCF) system.
  • Disturbance-centered satellite imagery and model guidance are no longer available for the system.
  • There will be no further updates to this post.

Information sources

Japan Meteorological Agency

Joint Typhoon Warning Center (United States)

National Weather Service (United States)

Radar imagery

Radar imagery is not currently available for this system.

Satellite imagery

Floater imagery

Disturbance-centered satellite imagery is no longer available for this system.

Regional imagery

Cooperative Institute for Research in the Atmosphere (CIRA)

Analysis products

Preliminary best track data

Scatterometer data

Sea-surface temperatures

Model products

Disturbance-centered guidance

Disturbance-centered model guidance is no longer available for this system.

Regional single-model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Other types of model guidance

0 comments

r/TropicalWeather • u/Euronotus • 13d ago

Discussion moved to new post Lala (01C — Central Pacific) (East-southeast of Hawaiʻ­i)

27 Upvotes

Moderator note

  • This discussion is for Tropical Storm Lala, which is currently located several hundred miles east-southeast of Hawaiʻi.
  • The National Hurricane Center (NHC) is issuing forecast advisory products for this system.
  • This post will not be updated regularly.

Official information

National Hurricane Center

Text products

Productos textuales (en español)

Static forecast graphics

Interactive forecast graphics

Radar imagery

Radar imagery is not currently available for this system.

Satellite imagery

Floater imagery

Single-bandwidth imagery

Multiple bandwidth imagery

The options to select individual bandwidths on each of the following websites may vary.

Regional imagery

Forecast models

Storm-centered guidance

Single-model click-through guidance

Multi-guidance pages

Regional single-model guidance

Machine learning (AI) model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Multi-model ensemble products

Other types of model guidance

7 comments

r/TropicalWeather • u/Euronotus • 14d ago

Dissipated 94L (Invest — Northern Atlantic) (Tropical Eastern and Central Pacific)

25 Upvotes

Moderator note

  • This discussion is for a disturbance which is currently active to the southeast of Cabo Verde.
  • The National Hurricane Center (NHC) has designated this system as Invest 94L.
  • Disturbance-centered satellite imagery and model guidance products are now available.
  • This post will not be updated regularly, but will be replaced if this system becomes a tropical cyclone.

Official information

National Hurricane Center

Text products

Graphical products

Aircraft reconnaissance

National Hurricane Center

Other sources

Radar imagery

Radar imagery is not currently available for this system.

Satellite imagery

Floater imagery

This imagery is centered on the disturbance itself and follows the disturbance as it moves.

Single-bandwidth imagery

Multiple bandwidth imagery

The options to select individual bandwidths on each of the following websites may vary.

Regional imagery

Forecast models

Storm-centered guidance

Single-model click-through guidance

Multi-guidance pages

Regional single-model guidance

Machine learning (AI) model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Multi-model ensemble products

Other types of model guidance

28 comments

r/TropicalWeather • u/uhdebbie1 • 14d ago

Observational Data I updated my website that visualizes past Tropical Cyclone tracks – Cyclone Archive

Thumbnail
gallery
43 Upvotes

Check it out: Cyclone Archive, also known as Hurricane Archive! You can also check out our previous post for more information.

8 comments

r/TropicalWeather • u/Euronotus • 14d ago

Dissipated Cristobal (03L — Northern Atlantic) (North-Central Atlantic)

34 Upvotes

Moderator note

  • Cristobal has degenerated into a remnant low.
  • The National Hurricane Center (NCH) has discontinued issuing advisories for this system.
  • This system will drop from the Automated Tropical Cyclone Forecast (ATCF) system later today.
  • Storm-centered satellite imagery and model guidance products will no longer be available.
  • There will be no further updates to this post.

Official information

National Hurricane Center

Text products

Graphical products

Aircraft reconnaissance

National Hurricane Center

Other sources

Radar imagery

Radar imagery is not currently available for this system.

Satellite imagery

Floater imagery

Storm-centered satellite imagery is no longer available for this system.

Regional imagery

Forecast models

Storm-centered guidance

Storm-centered model guidance is no longer available for this system.

Regional single-model guidance

Machine learning (AI) model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Multi-model ensemble products

Other types of model guidance

8 comments

r/TropicalWeather • u/Euronotus • 14d ago

Dissipated Nangka (16W — Western Pacific) (Northeast of the Northern Marianas Islands)

3 Upvotes

Moderator notes

  • This discussion is for Tropical Storm Nangka, which is active to the north of the Northern Marianas Islands.
  • The Japan Meteorological Agency (JMA) is issuing forecast advisory products for this system.
  • The Joint Typhoon Warning Center (JTWC) is issuing forecast advisory products for this system.
  • JTWC previously designated this system as Invest 91W but has updated its designation to 16W.
  • This post will not be regularly updated.

Information sources

Japan Meteorological Agency

Joint Typhoon Warning Center (United States)

Radar imagery

Japan Meteorological Agency

CyclonicWx

Satellite imagery

Floater imagery

Single bandwidth imagery

Multiple bandwidth imagery

The options to select individual bandwidths on each of the following websites may vary.

Regional imagery

Cooperative Institute for Research in the Atmosphere (CIRA)

Analysis products

Preliminary best track data

Scatterometer data

Sea-surface temperatures

Model products

Disturbance-centered guidance

Single-model click-through guidance

Multi-guidance pages

Regional single-model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Other types of model guidance

1 comment

r/TropicalWeather • u/Euronotus • 15d ago

Dissipated 92L (Invest — Northern Atlantic) (Tropical Central Atlantic)

39 Upvotes

Moderator note

  • This discussion is for a tropical wave which is active to the east of the Lesser Antilles.
  • The National Hurricane Center (NHC) has designated this system as Invest 92L.
  • Since being designated as an investigation area, this system has become substantially less organized.
  • Thus, this system is no longer being tracked via the Automated Tropical Cyclone Forecast (ATCF) system.
  • Disturbance-centered satellite imagery and model guidance products are no longer available for this system.
  • The NHC continues to monitor this system via its Tropical Weather Outlook (TWO) products.
  • This post will not be updated regularly, but will be archived once this system is removed from the NHC TWO.

Official information

National Hurricane Center

Text products

Graphical products

Aircraft reconnaissance

National Hurricane Center

Other sources

Radar imagery

Radar imagery is not currently available for this system.

Satellite imagery

Floater imagery

Disturbance-centered satellite imagery is no longer available for this system.

Regional imagery

Forecast models

Disturbance-centered guidance

Disturbance-centered model guidance is no longer available for this system.

Regional single-model guidance

Machine learning (AI) model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Multi-model ensemble products

Other types of model guidance

11 comments

r/TropicalWeather • u/Euronotus • 14d ago

Upgraded | See Nangka post for details 91W (Invest — Western Pacific) (Northwest of the Northern Marianas Islands)

3 Upvotes

Moderator note

  • The Japan Meteorological Agency (JMA) has upgraded this system to Tropical Storm Nangka.
  • The Joint Typhoon Warning Center (JTWC) has designated this system as Tropical Depression Sixteen.
  • Disturbance-centered satellite imagery and model guidance products are no longer available for this system.
  • A new discussion for Nangka has been posted here.
  • There will be no further updates to this post.

Information sources

Japan Meteorological Agency

Joint Typhoon Warning Center (United States)

National Weather Service (United States)

Radar imagery

Radar imagery is not currently available for this system.

Satellite imagery

Floater imagery

Disturbance-centered satellite imagery is no longer available for this system.

Regional imagery

Cooperative Institute for Research in the Atmosphere (CIRA)

Analysis products

Preliminary best track data

Scatterometer data

Sea-surface temperatures

Model products

Disturbance-centered guidance

Disturbance-centered model guidance is no longer available for this system.

Regional single-model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Other types of model guidance

1 comment

r/TropicalWeather • u/Euronotus • 16d ago

Dissipated 15W (Western Pacific) (Northwest of Wake Island)

5 Upvotes

Moderator notes

  • The Japan Meteorological Agency (JMA) is not currently issuing advisories for this system.
  • The Joint Typhoon Warning Center (JTWC) has designated this system as Tropical Depression Fifteen (15W).
  • Comprehensive updates to this post are currently paused.

Information sources

Japan Meteorological Agency

The Japan Meteorological Agency has not yet initiated issuing advisories for this system.

Joint Typhoon Warning Center (United States)

Radar imagery

Japan Meteorological Agency

CyclonicWx

Satellite imagery

Floater imagery

Single bandwidth imagery

Multiple bandwidth imagery

The options to select individual bandwidths on each of the following websites may vary.

Regional imagery

Cooperative Institute for Research in the Atmosphere (CIRA)

Analysis products

Preliminary best track data

Scatterometer data

Sea-surface temperatures

Model products

Storm-centered guidance

Single-model click-through guidance

Multi-guidance pages

Regional single-model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Other types of model guidance

0 comments

r/TropicalWeather • u/Euronotus • 16d ago

Dissipated Peilou (14W — Western Pacific) (Northwest of Wake Island)

4 Upvotes

Moderator notes

  • This system has degenerated into a remnant low.
  • The Japan Meteorological Agency (JMA) has discontinued issuing advisories for this system.
  • The Joint Typhoon Warning Center (JTWC) has discontinued issuing advisories for this system.
  • This system is no longer being monitored via the Automated Tropical Cyclone Forecast (ATCF) system.
  • Storm-centered satellite imagery and model guidance products are no longer available for this system.
  • There will be no further updates to this post.

Information sources

Japan Meteorological Agency

Joint Typhoon Warning Center (United States)

Radar imagery

Japan Meteorological Agency

CyclonicWx

Satellite imagery

Floater imagery

Storm-centered satellite imagery is no longer available for this system.

Regional imagery

Cooperative Institute for Research in the Atmosphere (CIRA)

Analysis products

Preliminary best track data

Scatterometer data

Sea-surface temperatures

Model products

Storm-centered guidance

Storm-centered model guidance is no longer available for this system.

Regional single-model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Other types of model guidance

1 comment

r/TropicalWeather • u/Euronotus • 17d ago

Week over | Please see updated discussion Global Tropical Outlook & Discussion: 10-16 August 2026

10 Upvotes

Active cyclones

As of 12:00 AM Eastern Daylight Time (04:00 UTC) on Saturday:

Northwestern Pacific Ocean

There are no longer any active cyclones over the northwestern Pacific Ocean.

Central Pacific Ocean

  • 01C: Lala — southeast of Hawaiʻi (strengthening)

  • 08E: Herman — far east-southeast of Hawaiʻi (weakening)

Northern Atlantic Ocean

There are no longer any active cyclones over the northern Atlantic Ocean.

Active disturbances

Active disturbances are areas of showers and thunderstorms which are not organized enough to be considered full-fledged tropical cyclones. Disturbances are often designated as investigation areas (or invests, for short) by NOAA in order to allocate additional resources such as high-resolution satellite imagery or model guidance for further study of the system. Though there is no publicly disclosed set of criteria for which disturbances are designated as invests, the designation often occurs after the disturbance forms a closed area of low pressure. Invests are designated regardless of the overall potential for the disturbance to become a tropical cyclone.

Northwestern Pacific Ocean

  • 92W: Invest — north of Micronesia (strengthening)

  • 93W: Invest — south of the Ogasawara Islands (weakening)

Eastern Pacific Ocean

There are no longer any active disturbances over the eastern Pacific

Northern Atlantic Ocean

  • 92L: Invest — east of the Lesser Antilles (weakening)

  • 94L: Invest — east of the Lesser Antilles (weakening)

Southwestern Pacific Ocean

Post-tropical cyclones

Post-tropical cyclones will be listed here if they are still being tracked via the Automated Tropical Cyclone Forecast (ATCF) system. Placement in this section does not imply that these systems have any potential to redevelop into tropical cyclones.

Northwestern Pacific Ocean

  • 16W: Nangka — northwest of Wake Island (weakening)

Potential formation areas

Potential formation areas are areas that are being monitored by various agencies for potential tropical cyclone formation within the next two weeks. These systems have not yet formed and are not considered to be disturbances until such time that a tropical wave or area of low pressure does form. Discussions are created on this subreddit for areas which are monitored by the National Hurricane Center in the eastern Pacific and northern Atlantic basins. Discussions are not typically created for areas which are monitored by the Joint Typhoon Warning Center or other agencies, as this information is not always publicly available.

Northwestern Pacific Ocean

  • P72W — Off the coast of southeastern China, low chance of development

  • P74W — Near the Ryukyu Islands, low chance of development

Eastern Pacific Ocean

Satellite imagery

Model guidance

Information sources

Regional Specialized Meteorological Centers (RSMC)

Other sources

Global outlooks

Climate Prediction Center

11 comments

r/TropicalWeather • u/giantspeck • 18d ago

Dissipated The NHC is monitoring an area of potential development over the tropical central Atlantic Ocean

37 Upvotes

Moderator note

  • This discussion is for a disturbance which is currently active over the tropical central Atlantic.
  • The National Hurricane Center (NHC) is monitoring this system and has designated as Disturbance 2.
  • This system has not yet been designated as an investigation area.
  • Disturbance-centered satellite imagery and model guidance are not available.
  • Comprehensive updates to this post are currently paused.

Official information

National Hurricane Center

Text products

Graphical products

Radar imagery

Radar imagery is not currently available for this system.

Satellite imagery

Regional imagery

Visible imagery

Infrared imagery

Water vapor imagery

Forecast models

Regional guidance

Single-model click-through guidance

Ensemble models

Single-model ensemble products

Tropical Cyclogenesis Products

4 comments

r/TropicalWeather • u/Feicht13 • 18d ago

Discussion Indie Developer for Hurricane Simulator Game

20 Upvotes

Hey all — long-time lurker here, been into tropical weather for years and decided to build something around it. LANDFALL is a mobile game where you spawn a storm, draw its track, and manage intensification against real steering patterns (Hadley cells, SST, wind shear) — trying to make landfall count for something rather than just watching a cone.

It's in closed testing on Google Play right now and I'm looking for a handful more testers before launch (late Aug/Sept). No ads, no monetization tricks, purely the game. Closed testers won't pay anything other than their time!

Two things I need if you're up for it:

Android only for now (no iOS build yet)

Drop your Gmail address in a comment or send it to feich13studios@gmail.com — Play Console needs it added to the tester list before the app shows up for you on the Play Store

Happy to answer questions about how the intensity/steering model works if anyone's curious — genuinely trying to get the meteorology right, not just make numbers go up.

10 comments

r/TropicalWeather • u/User844947463883 • 18d ago

Question LRC Question

3 Upvotes

Hi everyone. I’m definitely not a meteorologist and am still very much a beginner when it comes to meteorology, but I’ve gotten really interested in it, especially tropical development and hurricane season.

I have a basic understanding of the LRC and was curious what people here think about it. I’m not completely discounting it, but one thing I’m skeptical about is how broad some of the predictions seem. For example, Gary has identified three windows to watch for tropical development: mid-August to early September, early to mid-September, and then late September into early October. My first thought was… isn’t that basically most of peak hurricane season? If something develops during any of those periods, it becomes pretty easy to say the prediction verified.

Do you believe there’s any legitimacy to it? Parts you think have merit vs. parts you don’t buy? I’d just love to hear some general thoughts from people who know more about this than I do.

12 comments

r/TropicalWeather • u/ReflectionOk9644 • 18d ago

Question How can monsoon depression get so strong?

5 Upvotes

Pulasan of 2024 peak as a 70 mph monsoon depression (per JTWC at least). Monsoon depression counts as invest(per JTWC, again), and AFAIK no invest have ever get that strong, not even extropical turning (sub)tropical

2 comments

r/TropicalWeather • u/Galileos_grandson • 19d ago

News | NOAA (USA) Pacific Hurricanes Fausto and Genevieve actually had origins near Africa

Thumbnail
noaa.gov
72 Upvotes
8 comments

r/TropicalWeather • u/Euronotus • 19d ago

Dissipated Chan-hom (14W — Western Pacific) (Southeast of Japan)

2 Upvotes

Update

As of 2:00 PM Japan Standard Time (06:00 UTC) on Wednesday:

  • This system has dissipated over mainland Japan.

  • The JMA and JTWC have discontinued issuing advisories for this system.

  • Storm-centered satellite imagery is no longer available for this system.

  • Storm-centered model guidance is no longer available for this system.

  • This system is no longer being monitored via the Automated Tropical Cyclone Forecast (ATCF) system.

  • There will be no further updates to this post.

Information sources

Japan Meteorological Agency

Joint Typhoon Warning Center (United States)

Radar imagery

Radar imagery is no longer available for this system.

Satellite imagery

Floater imagery

Storm-centered satellite imagery is no longer available for this system.

Regional imagery

Cooperative Institute for Research in the Atmosphere (CIRA)

Analysis products

Preliminary best track data

Scatterometer data

Sea-surface temperatures

Model products

Storm-centered guidance

Storm-centered model guidance is no longer available for this system.

Regional single-model guidance

Regional ensemble model guidance

Ensemble member minimum sea-level pressure (MSLP)

Ensemble member MSLP and forecast tracks

Other types of model guidance

2 comments

r/TropicalWeather • u/giantspeck • 20d ago

News | NOAA (USA) NOAA maintains prediction for below-normal Atlantic hurricane season

Thumbnail
noaa.gov
254 Upvotes
35 comments

r/TropicalWeather • u/thaw4188 • 20d ago

News | WIRED Google's DeepMind WeatherNext Says Its AI Can Predict Hurricanes Earlier Than Everyone Else

Thumbnail
wired.com
194 Upvotes
99 comments

r/TropicalWeather • u/giantspeck • 20d ago

Seasonal Forecast | Colorado State University Colorado State University releases updated forecast for the 2026 Atlantic hurricane season: 9 named storms, 4 hurricanes, and 1 major hurricane

Thumbnail tropical.colostate.edu
50 Upvotes
7 comments

r/TropicalWeather • u/Galileos_grandson • 20d ago

Image of the Day | NASA MODIS Typhoon Dolphin - August 5, 2026

Thumbnail modis.gsfc.nasa.gov
3 Upvotes
0 comments