Flash Flood in Bienville Parish, Louisiana

Multiple roads flooded across Bienville Parish.

Regenerative thunderstorm development occurred during the afternoon on April 28th across Central Texas along existing outflows from an MCS that decayed earlier in the morning. Surface temperatures continued to warm into the upper 70s to lower 80s within cloud breaks south and east of the large-scale outflow boundary across East Texas into North Louisiana. This led to moderate buoyancy with upper 60s to lower 70s surface dew points. Upscale growth continued along the regenerating MCS as it propagated farther east across the Ark-La-Tex early into the evening. With a favorable deep layer wind profile (0-6km shear near 50 knots), supercells were possible with any emerging thunderstorm clusters. Although shear profiles favored supercells, primary storm mode remained the MCS. Even so, a few tornadoes resulted within embedded circulations, along a few very discrete storm structures that evolved independently of the MCS. Meanwhile, the leading edge of a surging bow echo resulted in widespread damaging winds across Northwest Louisiana with the mature squall line. Given the expanding heavy rain shield and cold pool, an isolated report of flash flooding was also recorded.