SPC MD 791
MD 0791 CONCERNING SEVERE POTENTIAL...SEVERE THUNDERSTORM WATCH LIKELY FOR CENTRAL INDIANA INTO WESTERN OHIO

Mesoscale Discussion 0791
NWS Storm Prediction Center Norman OK
0326 PM CDT Tue May 19 2026

Areas affected...Central Indiana into Western Ohio

Concerning...Severe potential...Severe Thunderstorm Watch likely 

Valid 192026Z - 192130Z

Probability of Watch Issuance...80 percent

SUMMARY...As convective coverage has increased this afternoon across
central and northern Indiana, it has gradually begun to organize
into line-segments/clusters. As these storms continue to organize,
they could pose a damaging wind threat... particularly with any
bowing line segments that may develop.

DISCUSSION...Convective coverage has continued to increase over
central and northern Indiana, especially over the last half hour.
Recent MRMS trends show loose organization into line segments ahead
of an environment characterized by strong DCAPE, steep low-level
lapse rates, and well-mixed boundary layer profiles. While there is
some uncertainty to which degree these storms will organize due to
the relative lack of deep-layer shear, the environment supports the
potential for damaging straight-line thunderstorm winds. This threat
will be maximized along the leading edge of any bowing segments that
develop.

..Halbert/Hart.. 05/19/2026

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...ILN...IWX...IND...

LAT...LON   39508749 39988650 40498599 40798571 41048525 41248503
            41218434 40958411 40488429 39928458 39468489 39168512
            38888564 38878618 38928679 39018723 39208741 39508749 

MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN

Read more
https://www.spc.noaa.gov/products/md/md0791.html