Jonathan Erdman
@wxjerdman.bsky.social
Senior meteorologist @weatherchannel. M.S. Colorado State Univ.; B.S. UW-Madison; Insightful. Interesting. Impactful. Weather. Opinions are mine only, not of my employer.
Through Dec. 27, pretty staggering number of daily and monthly warm temperature records set this month, so far. (Data: NOAA/NCEI)
December 29, 2025 at 11:01 AM
Through Dec. 27, pretty staggering number of daily and monthly warm temperature records set this month, so far. (Data: NOAA/NCEI)
Looks like it will be the warmest December on record for dozens of cities in the West.
NY Eve "Day" 60s in Denver, among others.
(Data: SERCC)
NY Eve "Day" 60s in Denver, among others.
(Data: SERCC)
December 29, 2025 at 10:55 AM
Looks like it will be the warmest December on record for dozens of cities in the West.
NY Eve "Day" 60s in Denver, among others.
(Data: SERCC)
NY Eve "Day" 60s in Denver, among others.
(Data: SERCC)
This is my favorite writeup of the year.
#1 was clinched early.
#1 was clinched early.
The 10 Strangest Things In 2025's Weather | Weather.com
From bizarre snowstorms to a weird hurricane season, 2025 was an odd bird for weather. Here's our ranked list of what we found most strange, along with some honorable mentions.
weather.com
December 23, 2025 at 5:25 PM
This is my favorite writeup of the year.
#1 was clinched early.
#1 was clinched early.
Setting new Christmas warm records has "been a thing" in recent years, so Thursday's forecast continues that trend.
Here are the daily warm records (both highs and warm lows) set/tied in the US this century, per NOAA/NCEI.
And, as you might guess, far outnumbers Christmas cold records.
Here are the daily warm records (both highs and warm lows) set/tied in the US this century, per NOAA/NCEI.
And, as you might guess, far outnumbers Christmas cold records.
December 22, 2025 at 12:21 PM
Setting new Christmas warm records has "been a thing" in recent years, so Thursday's forecast continues that trend.
Here are the daily warm records (both highs and warm lows) set/tied in the US this century, per NOAA/NCEI.
And, as you might guess, far outnumbers Christmas cold records.
Here are the daily warm records (both highs and warm lows) set/tied in the US this century, per NOAA/NCEI.
And, as you might guess, far outnumbers Christmas cold records.
The great US snow meltdown. Daily snow cover from NOAA from Dec. 15-19.
December 19, 2025 at 1:16 PM
The great US snow meltdown. Daily snow cover from NOAA from Dec. 15-19.
Christmas Day forecast highs, departures from average and NWS potential daily records. 😎 🌡️
December 19, 2025 at 10:55 AM
Christmas Day forecast highs, departures from average and NWS potential daily records. 😎 🌡️
Over the past 48 hours as of this post, 331 reports of wind damage (58 of which were from severe t-storms) have been received by the NWS from the Northwest to the Tennessee Valley and Appalachians.
We'll only add to that tally today in what has been the "week of wind".
We'll only add to that tally today in what has been the "week of wind".
December 19, 2025 at 10:47 AM
Over the past 48 hours as of this post, 331 reports of wind damage (58 of which were from severe t-storms) have been received by the NWS from the Northwest to the Tennessee Valley and Appalachians.
We'll only add to that tally today in what has been the "week of wind".
We'll only add to that tally today in what has been the "week of wind".
Christmas travel getaway Friday will be a headache for the East Coast hubs, given the wind and rain moving in.
These are either expected or possible delays today, per the FAA.
These are either expected or possible delays today, per the FAA.
December 19, 2025 at 10:24 AM
Christmas travel getaway Friday will be a headache for the East Coast hubs, given the wind and rain moving in.
These are either expected or possible delays today, per the FAA.
These are either expected or possible delays today, per the FAA.
Over the past 36 hours, there have been 23 separate wind gusts of 100+ mph measured in the West.
And 163 reports of wind damage. That included 1 death (tree fall onto a home) in Idaho and 2 injured kids from downed trees and powerlines while waiting at a bus stop in Twin Falls, ID.
And 163 reports of wind damage. That included 1 death (tree fall onto a home) in Idaho and 2 injured kids from downed trees and powerlines while waiting at a bus stop in Twin Falls, ID.
December 18, 2025 at 10:33 AM
Over the past 36 hours, there have been 23 separate wind gusts of 100+ mph measured in the West.
And 163 reports of wind damage. That included 1 death (tree fall onto a home) in Idaho and 2 injured kids from downed trees and powerlines while waiting at a bus stop in Twin Falls, ID.
And 163 reports of wind damage. That included 1 death (tree fall onto a home) in Idaho and 2 injured kids from downed trees and powerlines while waiting at a bus stop in Twin Falls, ID.
Quite a contrast...
Warmest first half of December on record in Pacific NW, including Seattle and Portland.
Among top 10 coldest in the Midwest and parts of the East, including Cleveland, Pittsburgh.
(Data: SERCC)
Warmest first half of December on record in Pacific NW, including Seattle and Portland.
Among top 10 coldest in the Midwest and parts of the East, including Cleveland, Pittsburgh.
(Data: SERCC)
December 17, 2025 at 1:27 PM
Quite a contrast...
Warmest first half of December on record in Pacific NW, including Seattle and Portland.
Among top 10 coldest in the Midwest and parts of the East, including Cleveland, Pittsburgh.
(Data: SERCC)
Warmest first half of December on record in Pacific NW, including Seattle and Portland.
Among top 10 coldest in the Midwest and parts of the East, including Cleveland, Pittsburgh.
(Data: SERCC)
Now over 534k w/o power in WA and OR, per poweroutage.us.
That number has risen over 200k in just 1-2 hours.
Safe to say "wind" is the dominant US weather word the next 3 days.
High wind alerts from the Northwest -> coastal New England.
That number has risen over 200k in just 1-2 hours.
Safe to say "wind" is the dominant US weather word the next 3 days.
High wind alerts from the Northwest -> coastal New England.
December 17, 2025 at 10:59 AM
Now over 534k w/o power in WA and OR, per poweroutage.us.
That number has risen over 200k in just 1-2 hours.
Safe to say "wind" is the dominant US weather word the next 3 days.
High wind alerts from the Northwest -> coastal New England.
That number has risen over 200k in just 1-2 hours.
Safe to say "wind" is the dominant US weather word the next 3 days.
High wind alerts from the Northwest -> coastal New England.
81 years ago today...this tragedy was the impetus for the founding of the US Joint Typhoon Warning Center.
On This Date: Halsey's Typhoon Was US Navy's Worst Natural Disaster | Weather.com
One fateful decision claimed hundreds of lives in an era before satellites and weather radar.
weather.com
December 17, 2025 at 10:48 AM
81 years ago today...this tragedy was the impetus for the founding of the US Joint Typhoon Warning Center.
About as "everything but the kitchen sink" as western Washington's weather can get.
December 17, 2025 at 10:28 AM
About as "everything but the kitchen sink" as western Washington's weather can get.
(Slight corr: Meant Jan. 31, 2024, not 2025)
Tuesday, the "Nation's Icebox", Int'l Falls, MN hit 50˚.
First time on record they've done that any time between Dec. 16 and Jan. 30.
Jan. 31, 2024, they hit 53˚, an all-time Jan. record.
Tuesday, the "Nation's Icebox", Int'l Falls, MN hit 50˚.
First time on record they've done that any time between Dec. 16 and Jan. 30.
Jan. 31, 2024, they hit 53˚, an all-time Jan. record.
December 17, 2025 at 9:57 AM
(Slight corr: Meant Jan. 31, 2024, not 2025)
Tuesday, the "Nation's Icebox", Int'l Falls, MN hit 50˚.
First time on record they've done that any time between Dec. 16 and Jan. 30.
Jan. 31, 2024, they hit 53˚, an all-time Jan. record.
Tuesday, the "Nation's Icebox", Int'l Falls, MN hit 50˚.
First time on record they've done that any time between Dec. 16 and Jan. 30.
Jan. 31, 2024, they hit 53˚, an all-time Jan. record.
Reposted by Jonathan Erdman
NCAR is crucial to cutting-edge meteorology and improvements in weather forecasting. As others have noted, it's far, far bigger than a "climate" research lab. This is self-sabotage by a wildly ignorant and malicious administration cutting off their nose to spite their face. Find a better scapegoat.
Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
bit.ly
December 17, 2025 at 2:50 AM
NCAR is crucial to cutting-edge meteorology and improvements in weather forecasting. As others have noted, it's far, far bigger than a "climate" research lab. This is self-sabotage by a wildly ignorant and malicious administration cutting off their nose to spite their face. Find a better scapegoat.
Reposted by Jonathan Erdman
It's like on the eve of WWII we decided to stop funding R&D into weapons systems to develop advanced aircraft, ships, and tanks. Climate change is going to kick our butts if we lose NCAR (and NOAA) at a time when climate change is increasing extreme weather events capable of crashing the economy.
Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
bit.ly
December 17, 2025 at 4:24 AM
It's like on the eve of WWII we decided to stop funding R&D into weapons systems to develop advanced aircraft, ships, and tanks. Climate change is going to kick our butts if we lose NCAR (and NOAA) at a time when climate change is increasing extreme weather events capable of crashing the economy.
From the -20s Sunday, to a possible daily record high today in the "Nation's Icebox", Int'l Falls, MN.
And some daily record highs also possible Friday in the recently chilly Northeast.
Meanwhile, the West records keep piling up into at least early next week.
And some daily record highs also possible Friday in the recently chilly Northeast.
Meanwhile, the West records keep piling up into at least early next week.
December 16, 2025 at 9:46 AM
From the -20s Sunday, to a possible daily record high today in the "Nation's Icebox", Int'l Falls, MN.
And some daily record highs also possible Friday in the recently chilly Northeast.
Meanwhile, the West records keep piling up into at least early next week.
And some daily record highs also possible Friday in the recently chilly Northeast.
Meanwhile, the West records keep piling up into at least early next week.
Four years ago today...one of the weirdest December days of weather I can remember in the US...
The Most Bizarre and Notable Things From the December Windstorm and Severe Outbreak | The Weather Channel
This massive windstorm created calendar confusion. Here are the many ways it was bizarre.
weather.com
December 15, 2025 at 5:29 PM
Four years ago today...one of the weirdest December days of weather I can remember in the US...
It's been the snowiest start to the "winter season" in Springfield, IL.
But here's why that doesn't mean a white Christmas is a given, there, or elsewhere in the recently snowy, cold Midwest.
But here's why that doesn't mean a white Christmas is a given, there, or elsewhere in the recently snowy, cold Midwest.
White Christmas Forecast: Thaw Ahead In Midwest, Northeast | Weather.com
The holiday is rapidly approaching. So is a significant pattern change that may leave some recently buried in snow with bare ground by Christmas morning.
weather.com
December 15, 2025 at 3:56 PM
It's been the snowiest start to the "winter season" in Springfield, IL.
But here's why that doesn't mean a white Christmas is a given, there, or elsewhere in the recently snowy, cold Midwest.
But here's why that doesn't mean a white Christmas is a given, there, or elsewhere in the recently snowy, cold Midwest.
If the Bears thought last Sunday's game at Lambeau was cold, this Sunday's forecast is saying, "Hold my beer".
It's just one of several teeth-rattling games on the week 15 NFL slate.
It's just one of several teeth-rattling games on the week 15 NFL slate.
NFL Weather Forecast: Arctic Plunge To Drop Wind Chills Below Zero | Weather.com
This week it's all about an arctic blast that will bring frigid air and gusty winds. Wind chills below zero could be felt in some NFL stadiums in week 15.
weather.com
December 12, 2025 at 5:59 PM
If the Bears thought last Sunday's game at Lambeau was cold, this Sunday's forecast is saying, "Hold my beer".
It's just one of several teeth-rattling games on the week 15 NFL slate.
It's just one of several teeth-rattling games on the week 15 NFL slate.
Northwest snow cover 1 week ago vs. today.
(Credit: NOAA/NOHRSC)
(Credit: NOAA/NOHRSC)
December 12, 2025 at 12:44 PM
Northwest snow cover 1 week ago vs. today.
(Credit: NOAA/NOHRSC)
(Credit: NOAA/NOHRSC)
5 locations with new record river crests, up to 17 inches of rain, and impressive washouts as far east as northwest Montana.
Our atmospheric river flood recap 👇
Our atmospheric river flood recap 👇
Powerful Atmospheric River Triggered Record Flooding In Washington State | Weather.com
Skies are now drying out after a historic soaking in the Northwest.
weather.com
December 12, 2025 at 12:16 PM
5 locations with new record river crests, up to 17 inches of rain, and impressive washouts as far east as northwest Montana.
Our atmospheric river flood recap 👇
Our atmospheric river flood recap 👇
Wish I was there to see this.
Record Rain Resurrects Ice Age Lake in Death Valley | Weather.com
Repeated storms from September through November have revived a prehistoric lake in one of the driest places on our planet.
weather.com
December 11, 2025 at 3:32 PM
Wish I was there to see this.
Weird warmth Wednesday:
- Yakima, WA tied its Dec. record (72˚) despite almost full cloud cover. Just 1˚ shy of high in Vegas.
- Portland, OR "low" was 11˚ warmer than their average high.
More West record warmth, if you're sick of the cold.
- Yakima, WA tied its Dec. record (72˚) despite almost full cloud cover. Just 1˚ shy of high in Vegas.
- Portland, OR "low" was 11˚ warmer than their average high.
More West record warmth, if you're sick of the cold.
West Is Record Warm This Week As Midwest, East Shiver | Weather.com
If you're already sick of the cold and snow in parts of the northern U.S., check out these record highs in the West this week. You may just want to book a last-minute trip.
weather.com
December 11, 2025 at 2:27 PM
Weird warmth Wednesday:
- Yakima, WA tied its Dec. record (72˚) despite almost full cloud cover. Just 1˚ shy of high in Vegas.
- Portland, OR "low" was 11˚ warmer than their average high.
More West record warmth, if you're sick of the cold.
- Yakima, WA tied its Dec. record (72˚) despite almost full cloud cover. Just 1˚ shy of high in Vegas.
- Portland, OR "low" was 11˚ warmer than their average high.
More West record warmth, if you're sick of the cold.
Not surprisingly, one of the top 10 coldest starts to December in parts of the East and Great Lakes. Well below average for most of the eastern half, with the exception of the Fla. Peninsula. (Data kudos: SERCC)
December 11, 2025 at 12:16 PM
Not surprisingly, one of the top 10 coldest starts to December in parts of the East and Great Lakes. Well below average for most of the eastern half, with the exception of the Fla. Peninsula. (Data kudos: SERCC)