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Posts by David Roth

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Since it’s getting very warm/hot early, again, there’s no better time for USA Today’s heat safety tips. :p

1 week ago 18 4 0 4
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Vaianu, a subtropical cyclone

1 week ago 4 1 0 0
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Fallstreaks, including a hole punch cloud. I’d guess that the quasi-linear formation was caused by a contrail higher up that fell through the supercooled altocumulus layer. We are under the Dulles AP flight path.

3 weeks ago 15 1 0 0
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Our convective friend persists

1 month ago 3 1 0 0
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Alaska and Libya can’t have all of the subtropical cyclone fun. This convective low is between Portugal and the Azores, moving west. 🐻⌚️

1 month ago 10 1 1 0
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Someone has displeased the subtropical cyclone/polar low gods…

1 month ago 6 1 0 0
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Colorado will have its lowest statewide peak snowpack on record (8.4″ SWE), which has likely already peaked due to our incoming heatwave. Official records date to 1987.

These paltry numbers below will likely plunge this week and next weekend.

#COwx

1 month ago 78 29 4 5

Yeah. The usual storm track doesn’t cut through the middle of Quebec.

1 month ago 1 0 0 0
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wave cloud timelapse #CO

1 month ago 26 6 3 0
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I did not, but one of my coworkers in College Park did…

1 month ago 2 0 1 0
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Oh, hi there

1 month ago 9 0 1 0
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And now snow

1 month ago 5 0 0 0
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Yesterday, 80s. Currently? Sleet.

1 month ago 5 0 1 0
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That look the atmosphere gives you before feeding you oxygen at 80 mph.

1 month ago 50 9 0 0

🎼. Oh….we’re halfway there…. 🎶 www.wpc.ncep.noaa.gov/research/rot...

1 month ago 3 1 1 0
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1 month ago 7 0 0 0
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Kelvin Helmholtz

Kelvin Helmholtz

No way

1 month ago 41 3 4 1
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December 2025 through February 2026 was the 2nd warmest winter on record for the Contiguous U.S. according to Prism climate data. The widespread record to near record warmth in the west easily outweighed the cool temps in the east. 🔥🔥🔥

1 month ago 608 266 21 39

Probably none.

1 month ago 1 0 0 0

CPC has always been part of the National Weather Service…. ¯\_(ツ)_/¯

1 month ago 3 0 1 0
A still satellite image of the blizzard of 2026 in the Northeast United States. This image contains the GeoColor product from the GOES-19 weather satellite from the evening of 2026-02-23.

A still satellite image of the blizzard of 2026 in the Northeast United States. This image contains the GeoColor product from the GOES-19 weather satellite from the evening of 2026-02-23.

A view we will not soon forget.

The Blizzard of 2026.

1 month ago 450 114 4 14
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It’s been 26 days since the snow/sleet. It remains in some areas shadowed from the sun and in piles, but it has become quite patchy. :)

2 months ago 8 0 0 0
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Our snow/sleet fell 23 days ago. Temperatures rising into the 40s and 50s lately have aided the melt, but work continues.

2 months ago 7 1 0 0
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The evolving situation

2 months ago 2 0 0 0
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How things are going so far

2 months ago 2 0 1 0
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@aliciambentley.bsky.social’s standardized anomalies in the sea level pressure for 0600 UTC tell the tale quite well. A large area of 3 to 4+ sigmas below climatology for this time of year.

2 months ago 5 2 1 0
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Many February low pressure records could be set over the next 24 hours in and near ID as well as northwest NE/western SD.

2 months ago 7 0 1 0
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Happy Valentine’s Day. ☺️

2 months ago 14 3 0 1
Urban backyard covered in dirty calf-deep snow.

Urban backyard covered in dirty calf-deep snow.

Weather forecast for columbus Ohio showing that we’re finally getting a break from this colder air— it’s 30 Fahrenheit now with a low of 6, all below freezing, but on Tuesday the high is 51 Fahrenheit, or 10.6 Celsius.

Weather forecast for columbus Ohio showing that we’re finally getting a break from this colder air— it’s 30 Fahrenheit now with a low of 6, all below freezing, but on Tuesday the high is 51 Fahrenheit, or 10.6 Celsius.

Whispering “your days are numbered” to the many inches of snow that have plagued us for weeks here

2 months ago 75 5 4 2
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When in “Nome”…

2 months ago 6 0 2 0