Michael Fischer
@mikefischerwx.bsky.social
Assistant Professor at the University of Miami. Usually discussing hurricanes.
Reposted by Michael Fischer
Today is the centennial of The Great Miami Hurricane's landfall in Miami.
Approximately 12 days after exiting the African coast, a large Category 4 hurricane with 145 mph sustained winds slammed into southeast Florida around sunrise on September 18, 1926.
bmcnoldy.earth.miami.edu/tropics/miam...
Approximately 12 days after exiting the African coast, a large Category 4 hurricane with 145 mph sustained winds slammed into southeast Florida around sunrise on September 18, 1926.
bmcnoldy.earth.miami.edu/tropics/miam...
September 18, 2026 at 11:44 AM
Today is the centennial of The Great Miami Hurricane's landfall in Miami.
Approximately 12 days after exiting the African coast, a large Category 4 hurricane with 145 mph sustained winds slammed into southeast Florida around sunrise on September 18, 1926.
bmcnoldy.earth.miami.edu/tropics/miam...
Approximately 12 days after exiting the African coast, a large Category 4 hurricane with 145 mph sustained winds slammed into southeast Florida around sunrise on September 18, 1926.
bmcnoldy.earth.miami.edu/tropics/miam...
Reposted by Michael Fischer
New research led by @miamirosenstiel.bsky.social using nearly three decades of airborne radar observations identifies four features that help storms align before they intensify.
Learn more: https://bit.ly/3SWH4Xm
Learn more: https://bit.ly/3SWH4Xm
Hurricane Hunter data reveal early signs of strengthening tropical cyclones
Nearly three decades of airborne radar observations identify four features that help storms align before they intensify.
bit.ly
September 16, 2026 at 4:40 PM
New research led by @miamirosenstiel.bsky.social using nearly three decades of airborne radar observations identifies four features that help storms align before they intensify.
Learn more: https://bit.ly/3SWH4Xm
Learn more: https://bit.ly/3SWH4Xm
Tropical Storm #Bertha is a sheared and tilted tropical cyclone. But many TCs start out this way. What factors determine whether a storm can become aligned and intensify? Well, that is exactly what we explored in our recent publication: agupubs.onlinelibrary.wiley.com/doi/full/10....
July 21, 2026 at 6:44 PM
Tropical Storm #Bertha is a sheared and tilted tropical cyclone. But many TCs start out this way. What factors determine whether a storm can become aligned and intensify? Well, that is exactly what we explored in our recent publication: agupubs.onlinelibrary.wiley.com/doi/full/10....
It's the first day of hurricane season in the Atlantic. TC-ATLAS now features a real-time monitoring page with geostationary and microwave satellite data, real-time surface observations, and objective model forecasts from Google DeepMind. michaelfischerwx.github.io/TC-ATLAS/rea...
June 2, 2026 at 12:22 AM
It's the first day of hurricane season in the Atlantic. TC-ATLAS now features a real-time monitoring page with geostationary and microwave satellite data, real-time surface observations, and objective model forecasts from Google DeepMind. michaelfischerwx.github.io/TC-ATLAS/rea...
Hello friends, just a note that I have been steadily adding features over the last month+ to TC-ATLAS. This includes a real-time monitoring page for synoptic, subseasonal, and seasonal aspects. Examples attached. Check out more here: michaelfischerwx.github.io/TC-ATLAS/rea...
May 18, 2026 at 7:35 PM
Hello friends, just a note that I have been steadily adding features over the last month+ to TC-ATLAS. This includes a real-time monitoring page for synoptic, subseasonal, and seasonal aspects. Examples attached. Check out more here: michaelfischerwx.github.io/TC-ATLAS/rea...
Reposted by Michael Fischer
News: WH released proposed FY27 budget, continuing to push plan to eliminate NOAA Research and massively cut Earth sciences - while NOAA grant data for FY2026 shows only 7 new grants so far compared to 379 in FY2025, further evidence of curtailed science budget execution. tinyurl.com/5e3ptub2
White House releases FY27 budget proposal, continuing plan of massive cuts to Earth science, including elimination of NOAA Research
NOAA grant data shows agency awarding grants at a much slower rate than previous years, likely showing administration strategy to reduce scientific spending through budget execution
tinyurl.com
April 3, 2026 at 8:29 PM
News: WH released proposed FY27 budget, continuing to push plan to eliminate NOAA Research and massively cut Earth sciences - while NOAA grant data for FY2026 shows only 7 new grants so far compared to 379 in FY2025, further evidence of curtailed science budget execution. tinyurl.com/5e3ptub2
Hello from 34k ft in the air as I’m headed to @AMSTropical. I just wanted to share that TC-ATLAS now features environmental diagnostics from ERA5 courtesy of TC-PRIMED and interactive NEXRAD radar data in the global archive page: michaelfischerwx.github.io/TC-ATLAS/ind...
March 31, 2026 at 2:09 AM
Hello from 34k ft in the air as I’m headed to @AMSTropical. I just wanted to share that TC-ATLAS now features environmental diagnostics from ERA5 courtesy of TC-PRIMED and interactive NEXRAD radar data in the global archive page: michaelfischerwx.github.io/TC-ATLAS/ind...
One more new feature: The global archive page of TC-ATLAS now has a "models" toggle so you can review the evolution of past forecasts going back to 1991. Some notable examples of challenging forecasts below. michaelfischerwx.github.io/TC-ATLAS/ind...
March 28, 2026 at 5:15 PM
One more new feature: The global archive page of TC-ATLAS now has a "models" toggle so you can review the evolution of past forecasts going back to 1991. Some notable examples of challenging forecasts below. michaelfischerwx.github.io/TC-ATLAS/ind...
Interested in hurricanes? I want to introduce TC-ATLAS: the Tropical Cyclone Analysis Tool for Live and Archived Structure. Explore live or past storms without writing a line of code or downloading a data file, building on the capabilities of TC-RADAR: michaelfischerwx.github.io/TC-ATLAS/ind...
March 27, 2026 at 2:25 PM
Interested in hurricanes? I want to introduce TC-ATLAS: the Tropical Cyclone Analysis Tool for Live and Archived Structure. Explore live or past storms without writing a line of code or downloading a data file, building on the capabilities of TC-RADAR: michaelfischerwx.github.io/TC-ATLAS/ind...
Unfortunately the sky was indeed the limit. Catastrophic #Melissa is on track to be the strongest hurricane to make landfall in the Atlantic in 90 years. Just absolutely gutted for the souls in Jamaica.
October 28, 2025 at 2:35 PM
Unfortunately the sky was indeed the limit. Catastrophic #Melissa is on track to be the strongest hurricane to make landfall in the Atlantic in 90 years. Just absolutely gutted for the souls in Jamaica.
#Melissa is intensifying very rapidly this evening. TDR structure is nearly perfect for a TC of this intensity. Incredibly symmetric, strong eyewall, and a deep, aligned circulation. The sky is the limit. Very scary situation.
October 26, 2025 at 12:03 AM
#Melissa is intensifying very rapidly this evening. TDR structure is nearly perfect for a TC of this intensity. Incredibly symmetric, strong eyewall, and a deep, aligned circulation. The sky is the limit. Very scary situation.
#Melissa is about to undergo rapid intensification (RI). And I anticipate it will be quite explosive. A classic cyan ring on 37 GHz imagery from this GMI overpass at 1447 UTC.
October 25, 2025 at 4:15 PM
#Melissa is about to undergo rapid intensification (RI). And I anticipate it will be quite explosive. A classic cyan ring on 37 GHz imagery from this GMI overpass at 1447 UTC.
Two tropical cyclones churning in the western Atlantic. Here in FL, it’s business as usual. The power of modern meteorology.
September 29, 2025 at 12:27 PM
Two tropical cyclones churning in the western Atlantic. Here in FL, it’s business as usual. The power of modern meteorology.
This is one of the best satellite signatures I have ever seen in the SW Atlantic (non-Gulf/Caribbean). #Humberto is up there with storms like Andrew, Dorian, and Irma in my eyes.
September 27, 2025 at 5:33 PM
This is one of the best satellite signatures I have ever seen in the SW Atlantic (non-Gulf/Caribbean). #Humberto is up there with storms like Andrew, Dorian, and Irma in my eyes.
Update: Hurricane #Humberto has intensified 55 kt in the last 12 h… extreme RI ongoing. Anomalous upshear convection is again a tell for subsequent RI. Thankfully the storm is well away from land for now.
September 27, 2025 at 1:41 AM
Update: Hurricane #Humberto has intensified 55 kt in the last 12 h… extreme RI ongoing. Anomalous upshear convection is again a tell for subsequent RI. Thankfully the storm is well away from land for now.
Anomalous upshear convection is often associated with rapid intensification in hurricanes. Here is a schematic from my dissertation and a recent snapshot of Hurricane Humberto, which is experiencing westerly shear. Although Humberto is fairly compact, its structure suggests RI is ongoing.
September 26, 2025 at 1:07 PM
Anomalous upshear convection is often associated with rapid intensification in hurricanes. Here is a schematic from my dissertation and a recent snapshot of Hurricane Humberto, which is experiencing westerly shear. Although Humberto is fairly compact, its structure suggests RI is ongoing.
With anomalously weak trade winds, the eastern Main Development Region of the Atlantic has rapidly warmed over the last two weeks. Models suggest this flow pattern should largely continue, favoring additional warming.
July 11, 2025 at 2:42 PM
With anomalously weak trade winds, the eastern Main Development Region of the Atlantic has rapidly warmed over the last two weeks. Models suggest this flow pattern should largely continue, favoring additional warming.
Reposted by Michael Fischer
As of 6am CST 18 June #Erick is now a #hurricane & is likely starting rapid intensification, #RI, as a central dense overcast, #CDO, forms over the center.
Hurricane warnings in effect for coastal #Mexico from Acapulco to Puerto Angel & Erick forecast to be near major hurricane at landfall.
Hurricane warnings in effect for coastal #Mexico from Acapulco to Puerto Angel & Erick forecast to be near major hurricane at landfall.
June 18, 2025 at 12:00 PM
As of 6am CST 18 June #Erick is now a #hurricane & is likely starting rapid intensification, #RI, as a central dense overcast, #CDO, forms over the center.
Hurricane warnings in effect for coastal #Mexico from Acapulco to Puerto Angel & Erick forecast to be near major hurricane at landfall.
Hurricane warnings in effect for coastal #Mexico from Acapulco to Puerto Angel & Erick forecast to be near major hurricane at landfall.
Reposted by Michael Fischer
The 2026 budget passback plan calls for eliminating NOAA Research, the scientific backbone that keeps weather forecasts, alerts, and warnings accurate and effective. This would have disastrous consequences.
Read the AMS statement, in partnership w/ @nwas.org: bit.ly/4cz2RtC
Read the AMS statement, in partnership w/ @nwas.org: bit.ly/4cz2RtC
Stand Up for NOAA Research – The Time to Act is Now
The AMS is a global community committed to advancing weather, water, and climate science and service.
bit.ly
April 17, 2025 at 6:42 PM
The 2026 budget passback plan calls for eliminating NOAA Research, the scientific backbone that keeps weather forecasts, alerts, and warnings accurate and effective. This would have disastrous consequences.
Read the AMS statement, in partnership w/ @nwas.org: bit.ly/4cz2RtC
Read the AMS statement, in partnership w/ @nwas.org: bit.ly/4cz2RtC
Cyclone Errol is an extremely powerful storm. IR brightness temps in the eye are quite warm for a core that small. Reminds me of Milton in the Atlantic last year. And for my northern hemisphere friends, I have rotated the IR pattern to be consistent with a positive Coriolis value in the 2nd image.
April 16, 2025 at 12:02 PM
Cyclone Errol is an extremely powerful storm. IR brightness temps in the eye are quite warm for a core that small. Reminds me of Milton in the Atlantic last year. And for my northern hemisphere friends, I have rotated the IR pattern to be consistent with a positive Coriolis value in the 2nd image.
Reposted by Michael Fischer
68,845,865.
That's how many individuals in the United States speak a language other than English at home.
Everyone deserves a chance to stay safe during disasters, and I will never stop advocating for that. Thinking of all the communities that are going to be affected by this change.
That's how many individuals in the United States speak a language other than English at home.
Everyone deserves a chance to stay safe during disasters, and I will never stop advocating for that. Thinking of all the communities that are going to be affected by this change.
The National Weather Service will stop issuing forecasts + storm warnings in Spanish after a translation software contract lapsed at midnight Tuesday. Unclear when/if service will return.
Scoop with @weathersullivan.bsky.social (free link):
www.bloomberg.com/news/article...
Scoop with @weathersullivan.bsky.social (free link):
www.bloomberg.com/news/article...
US Weather Forecasts in Spanish to Vanish as Translations Expire
The US National Weather Service has allowed a contract with a foreign-language translation service to expire, creating a potential gap in local-language forecasting just as spring brings a higher risk...
www.bloomberg.com
April 1, 2025 at 9:53 PM
68,845,865.
That's how many individuals in the United States speak a language other than English at home.
Everyone deserves a chance to stay safe during disasters, and I will never stop advocating for that. Thinking of all the communities that are going to be affected by this change.
That's how many individuals in the United States speak a language other than English at home.
Everyone deserves a chance to stay safe during disasters, and I will never stop advocating for that. Thinking of all the communities that are going to be affected by this change.
Thank you to UAH for the opportunity and hospitality during my visit. I had a great time talking about hurricanes and machine learning with the folks there. And a special thanks to @tcblers.bsky.social for the invitation and a great time in Huntsville!
Exciting to have @mikefischerwx.bsky.social to share his hurricane research at the UAH AES seminar and BLM class. Students showed high interests in the TC-RADAR dataset and future AI applications of aircraft observations. An extended Q&A session is the testament. Way to go, Professor :)
March 28, 2025 at 1:47 PM
Thank you to UAH for the opportunity and hospitality during my visit. I had a great time talking about hurricanes and machine learning with the folks there. And a special thanks to @tcblers.bsky.social for the invitation and a great time in Huntsville!