Mesoscale Precipitation Discussion 0778
NWS Weather Prediction Center College Park MD
1058 PM EDT Sat Jul 18 2026

Areas affected...far southeastern Alabama through central Georgia
and extreme western/upstate South Caroilna

Concerning...Heavy rainfall...Flash flooding possible

Valid 190258Z - 190558Z

Summary...Isolated instances of flash flooding remain possible for
another 2-3 hours or so (through 06Z/2a eastern).

Discussion...Scattered, slow-moving thunderstorms continue to
focus along a general axis from near Columbus, GA
north-northeastward through Macon and Anderson, SC.  The storms
are focused along a deformation zone through this axis tied to the
eastern Gulf disturbance currently centered about 130 miles south
of Apalachicola. Convection is in an environment with about
2000-3000 J/kg MLCAPE, weak convective inhibition, and 2-2.3 inch
PW values, supporting very heavy rainfall with the most persistent
activity. Weak steering flow was supporting slow storm movement,
and spots of 2-3 inch/hr rain rates were noted per MRMS data
particularly across central GA.  These rates are enough to prompt
isolated instances of flash flooding especially in low spots
and/or urban areas.  The ongoing threat will persist for at least
another couple hours, with models/CAMs suggestive of a gradual
decrease in convective coverage/intensity after 04Z or so.

Cook

ATTN...WFO...BMX...FFC...GSP...TAE...

ATTN...RFC...ALR...NWC...

LAT...LON   34968242 34018271 32058377 31158481 31658577
            32998505 34778346