Thundersnow in Downtown #Chicago captured by the Chicago Loop Live webcam! This was the first one around 12:23 am. There were two lightning flashes afterwards each spaced roughly 10 mins apart #ilwx ❄️⚡️

First evidence of thundersnow this evening is on the western periphery of the mesolow, likely over the steel plant near Indiana Dunes National Park. No shortage of tall objects there…more ⚡️ possible as the night goes on near #Chicago

Strong wording regarding lake-effect snow from NWS Chicago this evening. First snow of the season looking to be quite impactful for the #Chicago metro. Monday morning’s commute could be treacherous ❄️ #ilwx

(1/4) Lots of talk about the potential for anomalously cold temps and lake-effect precip (snow?) next week. Details remain uncertain at this lead time, however EOF analysis can provide some insight. Right now, the largest upper-level pattern differences in the models lie in the trough amplitude...

Before and after #HurricaneMelissa …ocean upwelling viewed from NOAA-21

Whoa 63 dBZ showing up in the lake-effect rain band north of Cleveland, OH this evening!! Likely graupel in there and checkout that lightning #ohwx

First snow of the season for the high peaks of New England tonight? ❄️ @professorpowder.bsky.social

This may be one of the first true tests of the Euro AIFS with a warm-core Nor’easter. Interestingly, the latest 12z run of the deterministic Euro is very different than the AI version. With such a complex meteorology setup it will be interesting to see how this pans out.

Read the latest key messages regarding the development of a strong coastal low this weekend. Significant coastal impacts are expected along much of the U.S. East Coast through early next week. Find your local forecast office to keep up with the latest at weather.gov.

October 🤝 warm-core Nor’easters

Ah that time of year when you can see lake-effect snow 300+ hours on the GFS is back 🙌

Finally some persistent rain last night in Champaign-Urbana but how much rain fell really depended on what side of town you’re on. Almost an inch less of rain in Champaign compared to Urbana. Some of those localized downpours didn’t quite make it west. #ilwx #cocorahs

Greetings from the CliMAS Fall 2025 Welcome BBQ!

And we’re back! Day 1 of PhD classes ✅ Ready to start this journey and all that’s to come!

More footage of the incredible lightning in Champaign last night. This is in slow motion. Lasted like this for almost a full hour after the passage of a line of thunderstorms!! #ilwx

Incredible +CG flash!! Negative leaders propagate right to left incloud, then a positive leader develops downward from the decaying negative leader causing a +CG return stroke. Positive leaders with recoil leaders visible below cloud base following the return stroke.

Tonight featured some of the most incredible lightning I’ve ever captured. Taken from Champaign, IL after thunderstorms departed the area!!⚡️ #ilwx @deeplycloudy.bsky.social @stephanieway.bsky.social @frqltg.bsky.social

Anvil crawler lightning looking north in Niantic, CT this evening!! ⛈️ #ctwx

EF-2 tornado confirmed in the Finger Lakes Region of New York yesterday. Very glad no one was injured here. This storm popped up so quickly and in an area of poor radar coverage! #nywx

Trace of snow officially goes down in the climate report for Binghamton, NY today from hail accumulation #nywx

Honored to have won a student oral presentation award! Thanks #AMS21Meso for a great conference

Join the Committee on Weather Analysis and Forecasting for a free webinar that highlights the important work that NOAA meteorologists throughout the agency do to keep the public safe during severe weather events. Register here: bit.ly/43RIUvq

Excited to head to Boise, ID for #AMS21Meso this coming week. I’ll be presenting results from my M.S. work on Thursday. Hope to see you there!

📍Beehive Trail, Acadia National Park 7:25 am | June 13, 2025

Wild weather day here at the Connecticut shoreline! First it was heavy downpours, then we dried out and had gusty winds, then more rain, now…slight haze from smoke in the upper levels of the atmosphere! #ctwx

M.S. in Atmospheric Sciences 🎓✅🥳 Pursuing a graduate degree was a dream of mine, but one I didn’t always believe was possible! I’m thankful for my teachers along the way that instilled belief in me. So excited to remain @climasuiuc.bsky.social as a research assistant for my PhD!

CliMAS congratulates the Class of 2025!

Our view of the supercell heading toward Decatur, IL at 7:30 pm before becoming tornado warned minutes later. View from U.S. 51 looking north. #ilwx

Rain shaft in the distance looking NE from Champaign ⛈️ #ilwx

Not sure it gets better than this 🙌 78°F temp/34°F dewpoint. Perfection😍 #ilwx

Landspout possible tag on a special wx statement issued in Shelbyville, IL this afternoon #ilwx 🌪️

Starting to get a first look on some of the guidance for @climasuiuc.bsky.social graduation day! Looking at above average temperatures as it stands now with return flow from a high pressure system positioned to the south. Will have to keep an eye on rain chances as we get closer! #ilwx

Officially official 🥳

We have been treated to so many colorful sunsets lately in Champaign. Last night was no different! 😍 #ilwx

If only we could get this in winter 🙃❄️ #ilwx

Impressive 77 mph gust from Rome, NY this evening ⬇️ #nywx

Couple of interesting small-scale effects I'm noticing in the guidance for Tuesday's severe wx setup in NY: *Warm sector (supercell?) initiation on a lake breeze boundary from Lake Erie by the HRRR *Southerly channeling in the Black River Valley of Lewis County in NAM3km #nywx

So very grateful and thankful to everyone who has helped me achieve this dream 🥰

Congratulations to Kaitlyn Jesmonth (@wxkaitlynj.bsky.social) on the successful completion of her MS Defense, which examined the effects of terrain on precipitation type in a Northeast US winter storm. Kaitlyn is advised by Prof. Steve Nesbitt (@70dbz.bsky.social).

This morning’s KILX sounding has tied for the second highest 700-500mb lapse rate based on the 12z SPC sounding climatology. #ilwx

Only 1 week away from my MS defense! More info is listed below. Please send me a DM if you'd like the Zoom link :) *Time: April 22 at 12 pm Central Time *Title: “Orographic and Thermodynamic Processes Influencing Mixed-Phase Precipitation Banding in an Eastern United States Winter Storm”

Consistently amazed by the mental fortitude this sport requires. What a fight to the end! #TheMasters

GLM captured #thundersnow within some elevated convection in Massachusetts this morning #mawx

Could be a burst of 1”/hr snowfall rates in the Hudson Valley and western New England tomorrow morning. Perhaps some #thundersnow or #thundersleet too? ❄️⚡️

Shelf cloud approaching Champaign from the northwest #ilwx

Captured this lightning bolt looking north from Champaign #ilwx ⛈️

Not just a tornado risk here today but hail too… Golf ball sized hail just reported in Springfield, IL #ilwx

Mammatus clouds over Champaign #ilwx

This is the time of year I do not miss being in upstate NY. Almost 70°F in Champaign and it isn’t even 11 am yet. We will make a run at 80° this afternoon☀️#ilwx

Wild temperature difference across NY and New England anticipated Saturday. RDPS shows clearing south of the front which would promote the front surging north via diabatic heating. These shallow cold air masses can be stubborn though. #nywx