Flash Flood Guidance
Issued by NWS
Issued by NWS
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683
AWUS01 KWNH 170119
FFGMPD
MSZ000-LAZ000-170615-
Mesoscale Precipitation Discussion 0715
NWS Weather Prediction Center College Park MD
917 PM EDT Wed Jul 16 2025
Areas affected...Southeast Louisiana
Concerning...Heavy rainfall...Flash flooding possible
Valid 170116Z - 170615Z
Summary...Threat of flash flooding continues to spread west ahead
of AL93 which is shifting west south of Mississippi. 2 to 3"/hour
rainfall rates are likely to continue in these bands and cross the
New Orleans and possibly Baton Rouge metros.
Discussion...AL93 continues a westward track near the MS coast.
00Z PW at Slidell is 2.36". Light mean layer flow will keep motion
slow. Given the high moisture and instability (SBCAPE 2500+ J/kg),
rainfall rates of 2 to 3"/hr are likely to continue as seen
recently from KHDC. Much of the area has high FFG, so the main
overnight threat is for the vulnerable metro areas such as NOLA
and Baton Rouge. Flash flooding is considered possible. Further
issuances overnight are possible as the low shifts west.
Jackson
...Please see www.wpc.ncep.noaa.gov for graphic product...
ATTN...WFO...LCH...LIX...MOB...
ATTN...RFC...ORN...NWC...
LAT...LON 30888952 30208852 29338856 28718956 29429180
30449181 30799121