• Flash flooding in Pike and Wyoming Counties on May 12, 2004 was associated with intense stationary thunderstorms.

  • The environment associated with the event was in many ways "classic" for flash flooding.

  • Key characteristics included moderate instability with "skinny" CAPES, high precipitable waters, a low-level jet oriented perpendicular to a low level boundary, and light, weakly sheared flow aloft.

  • Weak forcing aloft resulted in the storms focusing on low-level mesoscale boundaries and terrain.

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