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Dave Zaff

@davidzaff

Meteorologist. I like snow, all kinds. Except blizzards. I don’t like blizzards.

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06.02.2024
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Latest posts by Dave Zaff @davidzaff

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Wow! Officially the biggest snowstorm in RI history. Providence will make a run at 40 inches

23.02.2026 18:30 👍 39 🔁 24 💬 2 📌 1

🚨 🚀 A crude interface I built to expose an archive of College of DuPage GOES imagery since about 15 Apr 2017. The archive is around ~500TB in size over ~2.5 billion JPEG images. Yikes, but here you go.

mesonet.agron.iastate.edu/archive/cods...

Anyways happy for feedback. Not worth the effort?

13.01.2026 22:50 👍 78 🔁 17 💬 11 📌 9
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Snow bands are feeding into an arctic front as it moves ESE through PA. Many snow squall warnings accompany the front with localized intense snow and whiteout conditions. Impressive winter radar display.

01.01.2026 04:38 👍 4 🔁 0 💬 1 📌 0

I miss my MTV.

31.12.2025 22:53 👍 2 🔁 0 💬 0 📌 0
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I don’t post KBUF radar much anymore, but Go Bills!

29.12.2025 00:08 👍 5 🔁 0 💬 0 📌 0

What's NCAR? and 8 ways it has helped you

www.forbes.com/sites/marsha...

18.12.2025 22:47 👍 80 🔁 52 💬 3 📌 1

Hi. Hello.

Shutting down climate research doesn't make climate change stop existing!

17.12.2025 14:16 👍 78 🔁 27 💬 4 📌 2

Hard to choose, but the 7:27 minute Go Set is “Snap-crackle-pop-boom, POW” good. But the 14:12 minute Thomas Duncan, Pt 3 is a masterpiece. “Perhaps you did not get the memo?”Then there’s Samba for Sam… Oh never mind. They’re ALL good. “Don't let the music stop”

19.11.2025 23:12 👍 1 🔁 0 💬 1 📌 0
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NOAA aerial imagery is coming in. Hurricane Melissa literally turned western Jamaica from green to brown. Vegetation damage is immense — recovery will take years.

01.11.2025 19:18 👍 267 🔁 157 💬 12 📌 15
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Zoomed-in, 1-minute loop leading up to Melissa's record-tying destructive landfall - notice the Air Force plane circling in the eye after experiencing severe turbulence before leaving the storm:

29.10.2025 22:24 👍 41 🔁 9 💬 0 📌 3
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Alrighty, ready to see something really cool? (and maybe a little nauseating)

The evolution of Hurricane Melissa's mesovortices at peak strength.

29.10.2025 20:10 👍 870 🔁 302 💬 37 📌 26
Lyrics for "Little Things" by Dogs In A Pile

Here’s 9 minutes of “Little Things” by Dogs in a Pile. Sub theme, “But don't you worry 'bout the weather tonight”

youtu.be/uoR1SP74BA8

Full lyrics:

go-set.net/song/little-...

10.07.2025 21:30 👍 1 🔁 0 💬 0 📌 0
The official NWS forecast showing the probability of precipitation for Saturday using the 733 AM issuance showed a 50% chance for at least 0.01” of rain for the D.C area through 600 PM,

The official NWS forecast showing the probability of precipitation for Saturday using the 733 AM issuance showed a 50% chance for at least 0.01” of rain for the D.C area through 600 PM,

The NWS forecast Saturday morning was 50%.

16.06.2025 00:02 👍 23 🔁 2 💬 0 📌 0

Kudos to Geologists for saving lives!

28.05.2025 17:29 👍 6 🔁 0 💬 1 📌 0
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Where does your weather forecast come from? Whether you get your forecast from an app on your phone, a website or a meteorologist on TV, most of the underlying information comes from the federal government.

Whether you get your forecast from an app on your phone, a website or a meteorologist on TV, most of the underlying information comes from the federal government.
By @rhersher.bsky.social

19.05.2025 18:27 👍 6422 🔁 2028 💬 200 📌 121
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Google Maps live traffic is an indicator of the general swath of impact from the tornado in the STL metro. Multiple schools, residential areas, and a major interstate highway in its path

16.05.2025 20:19 👍 36 🔁 10 💬 0 📌 0

We need data, Unidata.

09.05.2025 15:48 👍 4 🔁 0 💬 0 📌 0
A search for ‘NOAA’ in today’s news turns up multiple troubling articles regarding cutback, along with other issues.

A search for ‘NOAA’ in today’s news turns up multiple troubling articles regarding cutback, along with other issues.

A search for ‘NOAA’ in today’s news turns up multiple troubling articles regarding cutback, along with other issues.

A search for ‘NOAA’ in today’s news turns up multiple troubling articles regarding cutback, along with other issues.

Searching for NOAA in today’s news…

08.05.2025 16:58 👍 7 🔁 0 💬 0 📌 0
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Reflections on a day of change Thoughts on transitions at NOAA

More than 1,000 of my former NOAA colleagues left the agency in one day yesterday. I've been seeing a continuous stream of retirement announcements unlike anything I've ever experienced. It's brought a lot of emotions - I talked about them here.

open.substack.com/pub/balanced...

01.05.2025 23:38 👍 38 🔁 8 💬 1 📌 4
Shelf cloud above East Aurora NY.

Shelf cloud above East Aurora NY.

KBUF reflectivity and velocity.

KBUF reflectivity and velocity.

Nice little shelf cloud in Western NY this eve. 5/1/25 2249Z.

01.05.2025 22:54 👍 2 🔁 1 💬 1 📌 0
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Mesoscale marine effects on Lake Erie.

30.04.2025 18:46 👍 5 🔁 0 💬 0 📌 0
There is a 30-44% chance of severe weather over Western NY and PA on Tuesday, April 29, 2025, and a 10% chance for significant severe weather, defined as:

A tornado that produces EF2 or greater damage.
Wind speeds of 75 mph (65 knots) or greater.
Hail 2 inch in diameter or larger.

There is a 30-44% chance of severe weather over Western NY and PA on Tuesday, April 29, 2025, and a 10% chance for significant severe weather, defined as: A tornado that produces EF2 or greater damage. Wind speeds of 75 mph (65 knots) or greater. Hail 2 inch in diameter or larger.

A rare Day 3 (Tuesday) convective outlook for Western NY and PA. (30-44% chance for severe weather within 25 mi.)

10% chance for significant severe weather, defined in alt text.

27.04.2025 20:27 👍 7 🔁 1 💬 0 📌 0

A few offices have to drive to the launch site and back. (In the winter, this means clearing snow off the vehicle.)

24.04.2025 19:39 👍 1 🔁 0 💬 0 📌 0

Again I reiterate, the Warn-on-Forecast project is the culmination of stellar work done by all of us on the team. We’ve heard the success stories, we know the community support, and we have so much to learn to make it even better.

This is ONE example of bleeding-edge research that deserves to stay.

24.04.2025 14:31 👍 71 🔁 33 💬 0 📌 1
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Special BalancedWx Update: NOAA statement about impacts of NWS staff reductions And a quick evening severe weather update

ICYMI: NOAA released a statement to NBC News last night in defense of their cuts to NWS. I broke down why it's ludicrous.

balancedweather.substack.com/p/special-ba...

20.04.2025 14:48 👍 37 🔁 22 💬 1 📌 4

Dislike.

16.04.2025 18:54 👍 2 🔁 0 💬 0 📌 0
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Oneida Lake is showing off it's lake shadow early this afternoon. Not bad for a little guy compared to Lake Ontario.

09.04.2025 16:42 👍 4 🔁 0 💬 0 📌 0

This would be nothing short of CATACLYSMIC. I do not put this lightly…

Not just NOAA websites, but it will severely affect NWS warning systems, MRMS radar data accessibility, model data accessibility, and more, for services provided by AWS and Google Cloud Platform. Scientific growth will be hurt.

04.04.2025 16:20 👍 40 🔁 23 💬 2 📌 3
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US Weather Agency Websites to Vanish Under Planned Contract Cuts The US National Oceanic and Atmospheric Agency is poised to eliminate most websites tied to its research division under plans for the cancellation of a cloud web services contract, a move that could s...

Almost all NOAA Research websites that rely on cloud services - including Amazon, Google and WordPress - are poised to disappear at midnight ET Saturday after a contract was targeted for "early termination." Labs may also feel the effects.

Story for @bloomberg.com (free link):

04.04.2025 12:33 👍 6915 🔁 4080 💬 407 📌 576
www.timeanddate.com provides excellent information about upcoming eclipses.  This screenshot shows how much of the sun will be covered by the moons shadow at 7:05 AM at Buffalo, NY.  Not much.

www.timeanddate.com provides excellent information about upcoming eclipses. This screenshot shows how much of the sun will be covered by the moons shadow at 7:05 AM at Buffalo, NY. Not much.

This image of the 00Z 3/28/25 HREF run valid at 11Z Saturday shows a high probability of low, mid, and high clouds over Buffalo, NY during the upcoming partial solar eclipse.

https://www.spc.noaa.gov/exper/href/?model=href&product=cloudcover_mean&sector=ne

This image of the 00Z 3/28/25 HREF run valid at 11Z Saturday shows a high probability of low, mid, and high clouds over Buffalo, NY during the upcoming partial solar eclipse. https://www.spc.noaa.gov/exper/href/?model=href&product=cloudcover_mean&sector=ne

Partial solar eclipse information for the Buffalo, NY area tomorrow, Mar 29, 2025:

05:29 AM: Partial eclipse begins (below horizon)
07:02 AM: Sunrise
07:05 AM: Maximum eclipse
07:09 AM: Partial eclipse ends

Hardly noticeable, and probably cloudy anyway.

www.timeanddate.com/eclipse/in/u...

28.03.2025 14:09 👍 1 🔁 0 💬 0 📌 0