SALT LAKE CITY, UTAH — Isolated strong to severe thunderstorms are expected to impact northern Utah and the eastern Ohio Valley today, Wednesday, September 16, according to a Severe Weather Outlook from Max Velocity, updated at 12:53 a.m. CDT. In northern Utah, a passing upper-level weather system will provide enough energy to trigger a few afternoon storms capable of producing severe wind gusts and hail, while multiple rounds of showers and thunderstorms track across the Ohio Valley throughout the day, with the strongest afternoon storms there capable of sudden, localized damaging wind gusts near Columbus and Pittsburgh.
Passing Upper Level System Fuels Afternoon Storms Near Salt Lake City
Forecasters say the driving force behind today’s northern Utah threat is a passing upper-level weather system, which will supply just enough additional energy to the atmosphere to trigger a handful of afternoon storms across the region. That energy input is expected to be enough to allow a few storms to strengthen beyond ordinary thunderstorm intensity, giving them the potential to produce genuinely severe wind gusts and hail before the system moves out of the area later in the day.
Severe Wind Gusts and Hail Remain the Primary Threats Across Northern Utah
Unlike a widespread severe weather outbreak, today’s northern Utah setup is expected to produce only isolated storms, but forecasters caution that any storm capable of tapping into the energy from the passing upper-level system could become severe. The two hazards specifically flagged for this zone are damaging wind gusts and hail, both of which can develop quickly once an individual storm intensifies, even in a setup where the overall coverage of severe weather remains limited.
Salt Lake City Sits at the Center of Today’s Northern Utah Risk Zone
On today’s Severe Weather Outlook map, the shaded risk area across northern Utah forms a tight circle centered almost directly over Salt Lake City, marking the metro area as the focal point for today’s isolated severe storm potential in the region. Communities throughout the Salt Lake City area should expect the chance for a few strong to severe storms to develop specifically during the afternoon hours, when daytime heating combines with the passing upper-level energy to maximize instability.
Multiple Rounds of Showers and Thunderstorms Track Across the Ohio Valley
Meanwhile, across the Ohio Valley, forecasters are tracking a very different kind of setup, one defined by multiple rounds of showers and thunderstorms moving through over the course of the day rather than a single, isolated batch of storms. While widespread severe weather is not expected across this zone, the repeated nature of the activity means residents could see several separate rounds of thunderstorms pass through before the day is finished, each carrying its own small chance of turning briefly strong.
Columbus and Pittsburgh Face Risk of Sudden, Localized Damaging Wind Gusts
Within the broader Ohio Valley activity, forecasters specifically flagged the potential for the strongest afternoon storms to produce sudden, localized damaging wind gusts, particularly across the corridor stretching from near Columbus through Pittsburgh. Today’s outlook map shows a distinct, darker-shaded pocket of higher confidence centered directly over that corridor, setting it apart from the broader, lighter-shaded thunder possible zone covering much of the surrounding Midwest and Ohio Valley.
Broader Thunder Zone Stretches From the Northern Plains to New England
Beyond the two specific severe weather focal points near Salt Lake City and the Columbus-to-Pittsburgh corridor, today’s map shows a much larger, lighter-shaded thunder possible zone stretching from the northern Plains across the Upper Midwest, Great Lakes and into New England. Storms within that broader zone are not expected to reach severe criteria, but the coverage illustrates just how widespread general shower and thunderstorm activity will be nationally today, even though only two isolated pockets carry any real severe weather concern.
Max Velocity Places Both Zones at Level 1 of 5, Marginal Risk
Today’s Severe Weather Outlook places both the northern Utah and eastern Ohio Valley risk zones at Level 1 of 5, the Marginal Risk category, the lowest tier on Max Velocity’s five-level scale. A Marginal Risk designation reflects forecasters’ assessment that isolated severe storms are possible, but that the overall coverage and intensity of today’s severe weather will remain limited compared to higher-end setups capable of producing more widespread damage.
What to Expect as Today’s Isolated Storms Develop This Afternoon
With both risk areas capped at the Marginal level, forecasters are not anticipating a significant severe weather event today, but residents across Salt Lake City and the Columbus-to-Pittsburgh corridor should still stay weather aware through the afternoon and evening hours as individual storms develop. Given the isolated nature of today’s threat, any storm that does turn severe is likely to do so quickly and with relatively little advance notice, making it worth keeping an eye on the sky as afternoon heating peaks across both highlighted regions.
