SPC MD 1258
MD 1258 CONCERNING SEVERE THUNDERSTORM WATCH 374... FOR NORTHERN AL AND SOUTHERN MIDDLE TN

Mesoscale Discussion 1258
NWS Storm Prediction Center Norman OK
0320 PM CDT Mon Jun 22 2026

Areas affected...northern AL and southern Middle TN

Concerning...Severe Thunderstorm Watch 374...

Valid 222020Z - 222145Z

The severe weather threat for Severe Thunderstorm Watch 374
continues.

SUMMARY...Strong/damaging wind gust potential may be increasing
across northern Alabama into southern Middle Tennessee over the next
1-2 hours.

DISCUSSION...A dense cluster of convection over northern AL/southern
Middle TN has shown some signs of intensification recently. If this
area of convection can consolidate further, damaging wind potential
will increase in the short term. This activity is occurring within a
favorably shear environment, characterized by 35 kt 0-6 km effective
shear and around 200 m2/s2 0-1 km SRH. Radar velocity signatures
have also increased both in intensity and with some middle rotation
noted. Greater forward propagation of this cluster may be underway
and an ensuing risk of severe wind gusts may occur soon. If this
evolution unfolds, a downstream watch may be needed.

..Leitman.. 06/22/2026

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

ATTN...WFO...MRX...FFC...OHX...BMX...HUN...

LAT...LON   35108721 35448505 35338455 34938435 34558461 34308536
            34188580 34138696 34138747 34328762 34738758 34908754
            35108721 

MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH

Read more
https://www.spc.noaa.gov/products/md/md1258.html