AmericanSummerWXT

weather, and ancient history,formerly
@Zombie03112666

[AmericanSummerWXT @Reidsroyalgami1]

@lividwx Biggest event since may of last year

[StormHQ ☈ @StormHQwx]

The 12z Euro just goes more nuts for Wednesday across sections of the Midwest & Ohio Valley. An unusually strong northwest flow polar jet for this time of year pulling up deep gulf moisture/instability and sufficient height falls will set the stage for significant severe weather.

This trough orientation mostly favors more of damaging MCS/linear mode, but shear vectors looks to be favorable early on for supercell formation for the time being. There is many uncertainty's regrading surface thermos, where the slanted warm front will be positioned/how far north does it go, Morning convection leaving outflow boundaries, & etc.

The Euro has been uptrending and pushing more to the northeast, but this still days out and the placement is not set in stone quiet yet, but we will continue to monitor the trends.

[AmericanSummerWXT @Reidsroyalgami1]

@MatthewCappucci If things keep up trending at the same rate as they are now

[Matthew Cappucci @MatthewCappucci]

Midwest gang – Bryce makes a very good point.

By "kinematics," he means wind dynamics. Jet stream winds are stronger in the wintertime. Wednesday's event will feature winter-like jet dynamics.

By "thermodynamics," he means fuel – summertime warmth/humidity.

Sketchy combo.

[AmericanSummerWXT @Reidsroyalgami1]

@wxsteven @BryceShelton01 No it won’t be, don’t be a downcasting chud

[Bryce Shelton @BryceShelton01]

Winter kinematics with summer thermodynamics?

[k⃠ᜣo͟n͟ ī̶̧͙͖̲̘y̶̡͕̮͇͖͕̮̳̲̓ ™️🗣️ @KPHustle2]

Speed jumped over Caleb Williams at SoFi Stadium 👀😱😬

[NaderMike @TeamGodsFinger]

Wednesday's ceiling is downright scary. Pending storm mode and interactions an all-out sig-tornado outbreak is in the cards. Time will tell.

[Theman2846 @Beau18777]

To what point can we keep uptrending?

[Theman2846 @Beau18777]

Probably need to note that this hodograph doesn’t have that weird recurve like Thursday did so venting should be substantially better

[Mighty Muffins @Mighty__Muffins]

There been some interesting chatter with stormnet going with its highest tornado probabilities ever for an event I think it really is possible more than anytime since the SPC adopted the new system we could see the high risk issued.

I mean will we? I don't think so but we could see a cig 3 finally issued by Day 1 and even a 30% tor cig2. This is a unbelievable high end set up on hand.

[StormNet @StormNetWx]

Elevated threat of tornadoes detected for Wednesday, June 17th, 2026.

See attached map for details.

This forecast initialized on Sunday morning. Follow for future forecast updates.

[James Pettus @PettusWX]

How are trends right now on the Euro? Getting quite a bit more concerning. 500mb and 850mb wind speeds on the rise and height falls dropping (evident of stronger system). This is just a wild scenario we are watching unfold in MID JUNE.

These hodographs have the look of a winter time mega trough but with summer thermodynamics in play, what could go wrong?

[lividwx @lividwx]

northern Illinois in 2026

[Tater Tots McGee @tatertotsconor]

@Pandrew_Wx @a_dose_of_wx Probably the fact that they all drive like assholes. 🤷🏼

[Bob Waszak @nilwxreports]

Tornado Probabilities are pretty much unchanged from previous runs with a little wobble from run to run. According to StormNet, these are the highest probabilities it's ourput at this distance so far this year. Meaning the likelihood of tornadoes are growing. According to the recent model runs, the I-80 corridor and south has the most favorable conditions on Wednesday for tornadoes, some may be strong. Across northern Illinois, we will definitely still have an all hazard risk with flooding also included. We will monitor and update as we get closer but I-80 and south into central and southern Illinois have the highest risks with this system as it looks today. #ilwx

[AmericanSummerWXT @Reidsroyalgami1]

This is not good at all

[StormNet @StormNetWx]

Elevated threat of tornadoes detected for Wednesday, June 17th, 2026.

See attached map for details.

This forecast initialized on Saturday night. Follow for future forecast updates.

[StormNet @StormNetWx]

Elevated threat of tornadoes detected for Wednesday, June 17th, 2026.

See attached map for details.

This forecast initialized on Saturday night. Follow for future forecast updates.

[Sam ☈ussell🌪 @SRussellWeather]

holy cow

[Weather Sphere @WeatherSphere22]

ready to do it again on wednesday