Flood Potential Outlook
Issued by NWS New Orleans/Baton Rouge, LA

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Hydrologic Outlook
National Weather Service New Orleans LA
205 PM CDT Thu Apr 27 2017

...A PERIOD OF HEAVY RAIN AND POSSIBLE FLOODING IS EXPECTED
THROUGH NEXT WEEK...

A couple of strong low pressure systems and cold fronts will be
moving into the Gulf States over the next several days. Both are
expected to bring a chance of heavy rainfall that may result in
swollen rivers and streams. Some may be prone to exceed their
flood stages by middle of next week.

The first system is forecast to move through the region Sunday
afternoon and evening. This system will anticipated to produce
between 1 and 3 inches of rainfall from the Baton Rouge area,
across the north-shore and southwestern Mississippi counties
eastward through the Mississippi coastal counties. While this much
rainfall may not produce actual river flooding, it will bring
several streams to near bankfull, possibly a few to minor flood
stage levels.

The second system is expected to move over the same river drainage
systems Wednesday through Thursday of next week. Another 2 to 3
inches of rainfall is possible, which would fall on what would be
saturated soils and into streams with less capacity.

The main areas of concern at this time appear to be the Pearl
River Basin and the Gulf Drainage systems. If a combined rainfall
accumulation of 5 to 6 inches does occur over these areas, it will
result in minor river flooding. Also, there is a chance the entire
reach of the Pearl River from central Mississippi to the Gulf
Coast may be impacted, which would prolong the flood threat for
about 7 to 10 days. The other streams on the north shore and the
greater Baton Rouge area will be closely monitored, but at this
time the anticipated accumulations should produce river levels
below flood stages.

Stay tuned for later statements and possible watches and warnings
over the next few days regarding this unfolding heavy rainfall and
flood threat. In the meantime, ensure that area catch basins and
drainage ditches are cleared of debris.

$$

24/RR



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