Flash Flooding in Louisiana, August 4 to 5, 2017

Area Forecast Discussion
National Weather Service New Orleans LA
1230 PM CDT Fri Aug 4 2017

.AVIATION...
While most of the shower and thunderstorm activity has been
confined to the coastal waters the last few hours, diurnal heating
has begun to promote the development of scattered convection
across inland areas again. Some of this convection may impact the
terminals through the afternoon, especially KMSY, KNEW, KHUM,
KASD and KGPT. Otherwise, VFR to occasional MVFR ceilings will
prevail at the terminals through the afternoon and into the
overnight outside of areas of convection. More convection will
likely be on tap Saturday morning. 11

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  88  72  89  73 /  30  20  40  30
BTR  89  74  89  75 /  30  30  50  40
ASD  86  75  88  76 /  60  40  50  50
MSY  87  76  87  78 /  60  40  60  40
GPT  85  76  87  77 /  70  40  50  50
PQL  84  74  87  75 /  70  40  50  50

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...None.
GM...None.
MS...None.
GM...None.
&&

Hazardous Weather Outlook
National Weather Service New Orleans LA
1100 AM CDT Fri Aug 4 2017

GMZ530-532-534-536-538-550-552-555-557-570-572-575-577-LAZ034>037-
039-040-046>050-056>072-MSZ068>071-077-080>082-050100-
Lake Pontchartrain and Lake Maurepas-Mississippi Sound-
Lake Borgne-Chandeleur Sound-Breton Sound-
Coastal Waters from Port Fourchon LA to Lower Atchafalaya River
LA out 20 nm-
Coastal waters from the Southwest Pass of the Mississippi River
to Port Fourchon Louisiana out 20 NM-
Coastal Waters from Boothville LA to Southwest Pass of the
Mississippi River out 20 nm-
Coastal waters from Pascagoula Mississippi to Stake Island out
20 NM-
Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya
River LA from 20 to 60 NM-
Coastal waters from Southwest Pass of the Mississippi River to
Port Fourchon Louisiana from 20 to 60 NM-
Coastal Waters from Stake Island LA to Southwest Pass of the
Mississippi River from 20 to 60 nm-
Coastal waters from Pascagoula Mississippi to Stake Island
Louisiana out 20 to 60 NM-Pointe Coupee-West Feliciana-
East Feliciana-St. Helena-Washington-St. Tammany-Iberville-
West Baton Rouge-East Baton Rouge-Ascension-Livingston-Assumption-
St. James-St. John The Baptist-Upper Lafourche-St. Charles-
Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard-
Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson-
Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa-
Southern Tangipahoa-Wilkinson-Amite-Pike-Walthall-Pearl River-
Hancock-Harrison-Jackson-
1100 AM CDT Fri Aug 4 2017

This Hazardous Weather Outlook is for portions of Southeast
Louisiana...South Mississippi and the adjacent coastal waters.

.DAY ONE...This afternoon

Scattered to numerous showers and thunderstorms are expected today,
with the best coverage across coastal areas. Locally heavy rainfall
will be possible with some of the showers and thunderstorms which
may result in the flooding of some roadways and low lying and poor
drainage areas. Also, stronger thunderstorms will have the potential
to produce frequent lightning and gusty winds. Waterspouts will be
possible as well.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Scattered to numerous showers and thunderstorms with the
potential to produce locally heavy rainfall will again be
possible on Saturday. A few of these storms could become strong and
produce gusty winds and frequent lightning.

Scattered thunderstorms are expected each day Sunday through
Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.