Flash Flood Event Downtown Jacksonville

Flash Flood Event Downtown Jacksonville, June 26, 2010

Angie Enyedi, NWS JAX

Two outflow boundaries converged over downtown Jacksonville (Figure 1) which resulted in a significant rainfall event specifically along and near the Hogan’s creek basin. Doppler radar hourly rainfall estimates were indicating amounts of 2 to 3 inches associated with thunderstorms north and south of downtown, thus a heavy rainfall event once the outflows converged over downtown seemed likely.  As the heavy rainfall amounts neared the Hogan’s creek basin, a Flash Flood Warning was issued at 7:38 pm local time (Figure 2). By 8:05 pm, several reports of street flooding were received from the Riverside area near McCoy’s Creek northward toward Shands Hospital near Hogan’s creek where water was beginning to enter an apartment complex.  Jefferson Street was closed due to standing water 2 ft deep. The Flash Flood Warning expired at 9:30 pm. The storm total rainfall neared 3.24 inches per the Jacksonville Doppler Radar in the Hogan’s Creek basin (Figure 3).

 



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