Jeff Berardelli
@weatherprof.bsky.social
Same @WeatherProf as Twitter. Posting about climate and weather. Chief Meteorologist and Climate Specialist WFLA NBC Tampa
It’s pretty astonishing. December was 8-10°F above normal across much of the Western US. The area shaded in dark red equals the warmest December on record. A huge area. Overall the US finished December 3°F above normal despite a chilly Northeast.
January 3, 2026 at 1:46 PM
It’s pretty astonishing. December was 8-10°F above normal across much of the Western US. The area shaded in dark red equals the warmest December on record. A huge area. Overall the US finished December 3°F above normal despite a chilly Northeast.
COLD & SNOWY EUROPE! Brutal cold across N. Europe (20°C below norm now) will overspread most of Europe soon, with cold dropping into the #Mediterranean, #Italy and the #Balkans. Over the next 10 days heavy snow will fall in spots… 1/
January 2, 2026 at 1:50 PM
COLD & SNOWY EUROPE! Brutal cold across N. Europe (20°C below norm now) will overspread most of Europe soon, with cold dropping into the #Mediterranean, #Italy and the #Balkans. Over the next 10 days heavy snow will fall in spots… 1/
FREEZE WATCH/ COLD WEATHER ADVISORY TONIGHT
The cold has arrived, and tonight will be colder. Freeze Watch Hernado County north. Cold Weather Advisory Tampa Bay Area / Orlando Area/ Treasure Coast down to Ft Myers and Inland Palm Beach County.
The cold has arrived, and tonight will be colder. Freeze Watch Hernado County north. Cold Weather Advisory Tampa Bay Area / Orlando Area/ Treasure Coast down to Ft Myers and Inland Palm Beach County.
December 30, 2025 at 2:35 PM
FREEZE WATCH/ COLD WEATHER ADVISORY TONIGHT
The cold has arrived, and tonight will be colder. Freeze Watch Hernado County north. Cold Weather Advisory Tampa Bay Area / Orlando Area/ Treasure Coast down to Ft Myers and Inland Palm Beach County.
The cold has arrived, and tonight will be colder. Freeze Watch Hernado County north. Cold Weather Advisory Tampa Bay Area / Orlando Area/ Treasure Coast down to Ft Myers and Inland Palm Beach County.
Climate change intensifies the water cycle. A generalization: Rich get richer. Poor get poorer.
Not always true, but a good rule of thumb.
Not always true, but a good rule of thumb.
1) Generally speaking, global warming is causing both precipitation AND evaporation to intensify. This figure (from Ficklin et al 2022), shows the expected change by late Century in precipitation intensity (top panel), and similarly the change in evaporative demand (bottom panel)
December 30, 2025 at 2:34 PM
Climate change intensifies the water cycle. A generalization: Rich get richer. Poor get poorer.
Not always true, but a good rule of thumb.
Not always true, but a good rule of thumb.
Reposted by Jeff Berardelli
Check out this year's extreme sea surface temperatures and recent warming across the North Pacific... 🌊
This graph shows the average for a band across the midlatitudes for every average January-November period from 1854-2025 using ERSSTv5 data.
This graph shows the average for a band across the midlatitudes for every average January-November period from 1854-2025 using ERSSTv5 data.
December 30, 2025 at 1:20 PM
Check out this year's extreme sea surface temperatures and recent warming across the North Pacific... 🌊
This graph shows the average for a band across the midlatitudes for every average January-November period from 1854-2025 using ERSSTv5 data.
This graph shows the average for a band across the midlatitudes for every average January-November period from 1854-2025 using ERSSTv5 data.
The Absurd December US heatwave is ending. Last 7 days: 4700 heat records (mins & maxs) vs only 55 cold records.
7 day anomalies up to +25° F. Dozens of monthly records smashed.
The heat dome was forced by a very blocky global pattern, but the intensity is virtually impossible b4 climate change.
7 day anomalies up to +25° F. Dozens of monthly records smashed.
The heat dome was forced by a very blocky global pattern, but the intensity is virtually impossible b4 climate change.
December 29, 2025 at 5:08 AM
The Absurd December US heatwave is ending. Last 7 days: 4700 heat records (mins & maxs) vs only 55 cold records.
7 day anomalies up to +25° F. Dozens of monthly records smashed.
The heat dome was forced by a very blocky global pattern, but the intensity is virtually impossible b4 climate change.
7 day anomalies up to +25° F. Dozens of monthly records smashed.
The heat dome was forced by a very blocky global pattern, but the intensity is virtually impossible b4 climate change.
87 in Tulsa OK yesterday! Ludicrous for late December.
This heatwave is not getting the attention it deserves because it’s not 110 in mid-summer. But in terms of anomalies & # of records, it’s virtually unprecedented/ virtually impossible in the absence of manmade climate change. Last 7 days…
This heatwave is not getting the attention it deserves because it’s not 110 in mid-summer. But in terms of anomalies & # of records, it’s virtually unprecedented/ virtually impossible in the absence of manmade climate change. Last 7 days…
December 29, 2025 at 4:14 AM
87 in Tulsa OK yesterday! Ludicrous for late December.
This heatwave is not getting the attention it deserves because it’s not 110 in mid-summer. But in terms of anomalies & # of records, it’s virtually unprecedented/ virtually impossible in the absence of manmade climate change. Last 7 days…
This heatwave is not getting the attention it deserves because it’s not 110 in mid-summer. But in terms of anomalies & # of records, it’s virtually unprecedented/ virtually impossible in the absence of manmade climate change. Last 7 days…
If you like cold & snow in the East, the pattern the next 2 weeks is text book!
Watch as a Giant Greenland Block intensifies and retrogrades across the Canadian Tundra thru the period, forcing cold air deep south, trapping it in the East US. This pattern may even have potential for Southern snow 1/
Watch as a Giant Greenland Block intensifies and retrogrades across the Canadian Tundra thru the period, forcing cold air deep south, trapping it in the East US. This pattern may even have potential for Southern snow 1/
December 29, 2025 at 1:13 AM
If you like cold & snow in the East, the pattern the next 2 weeks is text book!
Watch as a Giant Greenland Block intensifies and retrogrades across the Canadian Tundra thru the period, forcing cold air deep south, trapping it in the East US. This pattern may even have potential for Southern snow 1/
Watch as a Giant Greenland Block intensifies and retrogrades across the Canadian Tundra thru the period, forcing cold air deep south, trapping it in the East US. This pattern may even have potential for Southern snow 1/
After an extraordinary holiday heat dome across the US, get ready for a Polar Vortex Invasion next week! Cold air will surge deep South w/ 20s in the SE and 30s far into #Florida. The airmass won’t be super #cold up north. Instead the South will get the brunt, 15-20° below normal!
December 27, 2025 at 1:39 PM
Mother Nature is about to have a Major mood swing! After historic December heat across much of the nation, a large chunk of the nation is about to feel whiplash, going from 20° above normal to 20° below normal.
December 26, 2025 at 1:45 PM
Mother Nature is about to have a Major mood swing! After historic December heat across much of the nation, a large chunk of the nation is about to feel whiplash, going from 20° above normal to 20° below normal.
The week has been off the charts warm for much of the country!! Top: Departure from normal last 7 days (dark red +20°) Bottom: Record highs day by day.
Hottest US Christmas on record by a long shot!
Hottest US Christmas on record by a long shot!
December 26, 2025 at 1:29 AM
The week has been off the charts warm for much of the country!! Top: Departure from normal last 7 days (dark red +20°) Bottom: Record highs day by day.
Hottest US Christmas on record by a long shot!
Hottest US Christmas on record by a long shot!
Wishing you all a very Merry Christmas and Happy Holidays! We are beyond grateful for all that we have, and I sincerely hope your holiday is as wonderful as ours.
-The Berardelli’s
Jeff, Christy, Gracie and Millie 🐕
-The Berardelli’s
Jeff, Christy, Gracie and Millie 🐕
December 25, 2025 at 8:01 PM
Wishing you all a very Merry Christmas and Happy Holidays! We are beyond grateful for all that we have, and I sincerely hope your holiday is as wonderful as ours.
-The Berardelli’s
Jeff, Christy, Gracie and Millie 🐕
-The Berardelli’s
Jeff, Christy, Gracie and Millie 🐕
Astonishing feat!
US will break its record for the warmest Christmas by ~5°F! That’s remarkable.
Anomalies are up to +40°F in the nation’s middle and as you can see the US has the warmest air - relative to average - in the World!
H/T to @BenNollWeather
US will break its record for the warmest Christmas by ~5°F! That’s remarkable.
Anomalies are up to +40°F in the nation’s middle and as you can see the US has the warmest air - relative to average - in the World!
H/T to @BenNollWeather
December 25, 2025 at 5:09 PM
Astonishing feat!
US will break its record for the warmest Christmas by ~5°F! That’s remarkable.
Anomalies are up to +40°F in the nation’s middle and as you can see the US has the warmest air - relative to average - in the World!
H/T to @BenNollWeather
US will break its record for the warmest Christmas by ~5°F! That’s remarkable.
Anomalies are up to +40°F in the nation’s middle and as you can see the US has the warmest air - relative to average - in the World!
H/T to @BenNollWeather
Parts of SoCal have reached the 1-in-50 to 1-in-100 year recurrence interval (purple/ magenta). This means the chance of an event this extreme in these specific isolated areas is only 1-2% in any year. Several inches have piled up, heavy rain persists, and run off from higher elevations continues.
December 24, 2025 at 11:04 PM
Parts of SoCal have reached the 1-in-50 to 1-in-100 year recurrence interval (purple/ magenta). This means the chance of an event this extreme in these specific isolated areas is only 1-2% in any year. Several inches have piled up, heavy rain persists, and run off from higher elevations continues.
Big storms slamming #California for the next 72 hours. Very rough to near impossible travel in higher Terrain. But much needed #snow for the Sierra-Nevada Ski Resorts, not to mention for the snowpack.
70 mph gusts and flooding in spots too. Stay safe all! #storm
70 mph gusts and flooding in spots too. Stay safe all! #storm
December 24, 2025 at 5:24 AM
Big storms slamming #California for the next 72 hours. Very rough to near impossible travel in higher Terrain. But much needed #snow for the Sierra-Nevada Ski Resorts, not to mention for the snowpack.
70 mph gusts and flooding in spots too. Stay safe all! #storm
70 mph gusts and flooding in spots too. Stay safe all! #storm
Record highs yesterday (left) and today (right). Remarkable number of record highs. Some monthly records. Images via CoolWx
December 24, 2025 at 1:42 AM
Record highs yesterday (left) and today (right). Remarkable number of record highs. Some monthly records. Images via CoolWx
It’s wild!
-70°F in Canada today. The coldest December reading in 50+ years (since 1975!)
Meanwhile the US is En Fuego with 100s of record highs!
Dallas hit 81 today. And the contrast is huge, over 150°F across North America.
H/T 🎩 to @ThierryGooseBC
-70°F in Canada today. The coldest December reading in 50+ years (since 1975!)
Meanwhile the US is En Fuego with 100s of record highs!
Dallas hit 81 today. And the contrast is huge, over 150°F across North America.
H/T 🎩 to @ThierryGooseBC
December 23, 2025 at 9:41 PM
It’s wild!
-70°F in Canada today. The coldest December reading in 50+ years (since 1975!)
Meanwhile the US is En Fuego with 100s of record highs!
Dallas hit 81 today. And the contrast is huge, over 150°F across North America.
H/T 🎩 to @ThierryGooseBC
-70°F in Canada today. The coldest December reading in 50+ years (since 1975!)
Meanwhile the US is En Fuego with 100s of record highs!
Dallas hit 81 today. And the contrast is huge, over 150°F across North America.
H/T 🎩 to @ThierryGooseBC
A 180!
After a record hot Christmas across the Middle & parts of the South, a New Year’s Arctic Blast promises a Deep South Freeze by New Year’s Eve. Gonna be quite the shock to the system, with 20s into North FL, 30s Central FL, and this one temps may actually reach far South FL with 40s!
After a record hot Christmas across the Middle & parts of the South, a New Year’s Arctic Blast promises a Deep South Freeze by New Year’s Eve. Gonna be quite the shock to the system, with 20s into North FL, 30s Central FL, and this one temps may actually reach far South FL with 40s!
December 23, 2025 at 1:22 PM
A 180!
After a record hot Christmas across the Middle & parts of the South, a New Year’s Arctic Blast promises a Deep South Freeze by New Year’s Eve. Gonna be quite the shock to the system, with 20s into North FL, 30s Central FL, and this one temps may actually reach far South FL with 40s!
After a record hot Christmas across the Middle & parts of the South, a New Year’s Arctic Blast promises a Deep South Freeze by New Year’s Eve. Gonna be quite the shock to the system, with 20s into North FL, 30s Central FL, and this one temps may actually reach far South FL with 40s!
To help illustrate the insane gradient in North America Monday I added a couple of numbers.
76 in Denver wasn’t even the national high. That was 90 in Hidalgo TX.
Braeburn was indeed the NA low. (These are actual temps, not feels like)
76 in Denver wasn’t even the national high. That was 90 in Hidalgo TX.
Braeburn was indeed the NA low. (These are actual temps, not feels like)
December 23, 2025 at 5:39 AM
To help illustrate the insane gradient in North America Monday I added a couple of numbers.
76 in Denver wasn’t even the national high. That was 90 in Hidalgo TX.
Braeburn was indeed the NA low. (These are actual temps, not feels like)
76 in Denver wasn’t even the national high. That was 90 in Hidalgo TX.
Braeburn was indeed the NA low. (These are actual temps, not feels like)
The magenta indicates where the heat dome qualifies as record breaking since 1979 on Christmas Eve. It’s a very big area. Image via @burgwx
December 23, 2025 at 4:16 AM
The magenta indicates where the heat dome qualifies as record breaking since 1979 on Christmas Eve. It’s a very big area. Image via @burgwx
Warmest Christmas 🎄 on record?!
Watch as two smaller heat domes combine to form a Huge Christmas Heat Dome - the most intense on record in the Nation’s middle.
Half of US States will set heat records. 100s will fall!
The only escape will be the West Coast and Northeast. #weather #christmas #record
Watch as two smaller heat domes combine to form a Huge Christmas Heat Dome - the most intense on record in the Nation’s middle.
Half of US States will set heat records. 100s will fall!
The only escape will be the West Coast and Northeast. #weather #christmas #record
December 23, 2025 at 12:09 AM
Warmest Christmas 🎄 on record?!
Watch as two smaller heat domes combine to form a Huge Christmas Heat Dome - the most intense on record in the Nation’s middle.
Half of US States will set heat records. 100s will fall!
The only escape will be the West Coast and Northeast. #weather #christmas #record
Watch as two smaller heat domes combine to form a Huge Christmas Heat Dome - the most intense on record in the Nation’s middle.
Half of US States will set heat records. 100s will fall!
The only escape will be the West Coast and Northeast. #weather #christmas #record
December 21, 2025 at 11:39 PM