Jon Marker

Operational Meteorologist @empirewx | BSU grad | #Weather | #Climate | #Sports #SufferingRedsFan. James 1:2-4

[Jon Marker @WX_Marker]

@NWSILN flash flooding in the Eaton area. About 1” of rain in 30 minutes as the storm pushed through. Wind gusts also elevated in excess of 40 mph

[Jon Marker @WX_Marker]

@MJ33Wx What are the biggest differences in terms of performance between the HRRR and RRFS that you have noticed?

[Jon Marker @WX_Marker]

@MJ33Wx I thought RRFS was based off MPAS? Is the NAM still expected to be discontinued soon?

[Jon Marker @WX_Marker]

This leads to effective snow growth and heavy snowfall rate

[Jon Marker @WX_Marker]

What's impressive with this overall set up is the abundant transport of moisture into a very cold, arctic air mass. Up to 1-inch of QPF is something this is not common across the Ohio Valley with arctic air!

[Jon Marker @WX_Marker]

Long way to go with this one! Snow goes all the way back to Texas and will stream across the Ohio Valley through Sunday. Expect to see some rippin snowfall rates overnight with bands of heavy snow with 1 in/hr.

[Jon Marker @WX_Marker]

What makes this set up impressive is the massive 3 sigma arctic high pressure that presses the arctic air south. This is key to creating a widespread overrunning precipitation event, which is being enhanced by more phasing of the SW disturbance.

[Jon Marker @WX_Marker]

Incredible! Very impressive winter storm develops across the S. Plains and heads across the Ohio Valley and Northeast with far reaching impacts of heavy snow and icy conditions. #winterstorm

[Jon Marker @WX_Marker]

This is a very impressive set up for an overrunning precipitation event. Significant snow and ice could be quite expansive with arctic air surging south.

[MJ33Wx @MJ33Wx]

Pretty strong signal of a heavy snow band from the Euro with its' Extreme Forecast Index. Values of 2 or more are very significant and a strong indicator of a highly anomalous event. #kywx

[Empire Weather @empirewx]

A significant winter weather event is increasingly possible later this week/weekend as arctic air presses south and sets up a strong temperature gradient. Potential for widespread, significant snow and ice from the S. Plains --> Eastern US. #energy #natgas #agwx

[Jon Marker @WX_Marker]

Significant band of lake-effect snow occurring across northern Indiana tonight. Godspeed to the plow driver driving through it! 🫡#inwx #lakeeffectsnow #heavysnow

[Jon Marker @WX_Marker]

A strong cold front plows through Thursday night with a big swing in temperatures. However, I’m puzzled by the hype over a “flash freeze” in the Ohio Valley. There is several hours of windy, lower dew point air prior to deep cold 🤷‍♂️

[Jon Marker @WX_Marker]

@webberweather Is wonder how this will compete with the blocking retrograding west over the Hudson Bay 🤔

[Hurricane Hunters @53rdWRS]

Last night, the 53rd Weather Reconnaissance Squadron flew into the eye of Hurricane Erin—and captured imagery of the breathtaking stadium effect.

These missions provide critical data to the NHC to improve forecasts, helping keep communities safe before the storm makes landfall.#readynow #weatherready

[Jon Marker @WX_Marker]

Upscale growth occurring near Sioux Falls …reports of wind gusts 75 mph+. This MCS will propagate ESE through the overnight. #agwx #sdwx #iowa

[Empire Weather @empirewx]

Ridge builds across the S. Plains next 10 days with a hot and dry pattern across Plains. Active/stormy pattern continues across the Midwest. Full details in today's reports! #agwx #corn #heat

[Jon Marker @WX_Marker]

@RepMTG I’m a meteorologist - feel free to reach out

[Empire Weather @empirewx]

Forecast models continue to highlight relatively favorable temperatures across the core of the AG Belt through mid-July with no support for a heatwave over the next 10 days. #agwx #corn #soybeans

[Jon Marker @WX_Marker]

Good riddance!! As the last wave of rain slides through, a time lapse of precipitation over the last few days. #flooding #agwx

[Jon Marker @WX_Marker]

While there is still significance to this line of thunderstorms (not downplaying it at all), models didn’t do so hot with the convection. Afternoon supercells/discrete cells did not materialize. It’s easy to lose sight of the fact that models are still tools.