Watch Possible for Severe Storms KY-OH-PA — April 18, 2026 — SevereWX

Severe thunderstorms limited to TSTM risk today

Storms rumble across parts of the Midwest and Plains under SPC's Day 1 TSTM outlook, the lowest severe weather category. Overnight into early Saturday, multiple mesoscale discussions accompanied Tornado Watch 131 over Illinois, Indiana, and Missouri, where thunderstorms brought severe gusts and hail risks. Now, isolated severe potential builds in Texas and the Ohio Valley, with SPC noting a possible watch issuance later today.

Timeline

9:09 PM EDT — Mesoscale discussion on Tornado Watch 131 for central Illinois into northwest Indiana

The Storm Prediction Center issues a mesoscale discussion concerning Tornado Watch 131, focusing on severe storms over central Illinois into northwest Indiana. Thunderstorms in this area carry risks of damaging winds and large hail through the overnight hours. Local residents remain under the watch as storms evolve.

9:39 PM EDT — Mesoscale discussion highlights Tornado Watch 131 activity in east central Missouri into Illinois

SPC follows up with another mesoscale discussion tied to Tornado Watch 131, targeting parts of east central Missouri and adjacent Illinois. Ongoing storm clusters pose severe threats including strong winds and isolated rotation. The discussion underscores the immediate severe weather picture in the watch zone.

9:52 PM EDT — Further mesoscale discussion for Tornado Watch 131 in central to east-central Illinois

Another SPC mesoscale discussion addresses the severe threat under Tornado Watch 131 across central to east-central Illinois. Storms continue to produce damaging wind and hail potential overnight. Forecasters monitor for any escalation as the watch remains in effect.

11:19 PM EDT — Mesoscale discussion covers Tornado Watches 131 and 133 in eastern Illinois into western Indiana

SPC posts a mesoscale discussion concerning Tornado Watches 131 and 133, affecting eastern Illinois into western Indiana. Thunderstorms here threaten severe hail and winds into the pre-dawn hours. The overlapping watches signal heightened concern for the region.

12:09 AM EDT — Mesoscale discussion for Severe Thunderstorm Watch 132 across Oklahoma and Missouri

The Storm Prediction Center issues a mesoscale discussion linked to Severe Thunderstorm Watch 132, spanning southwestern through northeastern Oklahoma into southwestern and south central Missouri. Developing storms bring risks of damaging winds and large hail. This watch covers broad areas of the southern Plains overnight.

7:20 AM EDT — Low severe risk noted southwest into north-central Texas; watch unlikely

SPC highlights isolated severe potential in southwest into north-central Texas, but a watch appears unlikely with low confidence. Morning thunderstorms could produce gusty winds and small hail. Activity remains scattered at this hour.

12:38 PM EDT — Severe potential builds northern Kentucky into eastern Ohio and western Pennsylvania; watch possible

A new mesoscale discussion from SPC flags increasing severe thunderstorm risk from northern Kentucky into eastern Ohio and western Pennsylvania. Forecasters see a notable chance for watch issuance as storms strengthen this afternoon. Damaging winds and hail are the main concerns.

1:04 PM EDT — Marginal severe threat portions of Edwards Plateau and Texas Hill Country; watch unlikely

SPC issues a mesoscale discussion for portions of the Edwards Plateau and Texas Hill Country in Texas, where severe potential exists but watch odds are low. Isolated storms may bring strong winds or hail through late afternoon. Coverage stays limited.

What's Next

Isolated thunderstorms with marginal severe potential continue possible this afternoon into evening across the Plains, Texas, and Ohio Valley under the TSTM outlook. A severe thunderstorm watch issuance remains on the table for parts of the Ohio Valley. Stay tuned to local National Weather Service updates as conditions evolve.

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