ACUS11 KWNS 202243
SWOMCD
SPC MCD 202242
NJZ000-MDZ000-DEZ000-210015-

Mesoscale Discussion 2057
NWS Storm Prediction Center Norman OK
0542 PM CDT Thu Aug 20 2026

Areas affected...Parts of DelMarVa and far southern NJ

Concerning...Tornado Watch 605...

Valid 202242Z - 210015Z

The severe weather threat for Tornado Watch 605 continues.

SUMMARY...The risk of damaging wind gusts and a brief tornado
continues across parts of Tornado Watch 605.

DISCUSSION...A cluster of thunderstorms with an embedded supercell
is tracking eastward into parts of the DE Bay. These storms will
continue tracking eastward along a differential heating boundary and
ahead of a frontal wave, where enhanced low-level vorticity along
the boundary and a clockwise-curved low-level hodograph (around 250
m2/s2 0-1km SRH per DOX VWP) will continue to promote a risk of a
tornado and damaging wind gusts into far southern NJ in the near
term.

Farther south, an increasingly organized line of storms is moving
into a warm/moist air mass across DelMarVa. The associated strong
surface-based buoyancy and around 40 kt of deep-layer shear oriented perpendicular to the evolving gust front will favor damaging wind
gusts and possibly a brief/embedded tornado.

..Weinman.. 08/20/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!49Wl1sDxYveOcc7kGIE5plBizWv4PaDxPfit7lxJR43NYuhdzy14LpGBIN9lpupAF8043PbYtlznNfKwl5CjH4a_nrE$ for graphic product...

ATTN...WFO...PHI...AKQ...LWX...

LAT...LON 38797627 39237538 39317494 39277455 39067456 38617494
38207566 38067615 38177652 38337666 38797627

MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


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