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2 products issued by NWS for: 15NM N Grand Isle LA
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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service New Orleans LA
454 PM CDT Fri May 25 2018

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>082-261000-
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-
454 PM CDT Fri May 25 2018

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

.DAY ONE...Tonight

Slow moving showers and thunderstorms may produce flooding. A
Flash Flood Watch is in effect tonight for areas generally south
of I-12 corridor and all of lower southeast Louisiana and coastal
Mississippi.

A Tropical Storm Watch is now in effect for areas east of Grand
Isle including Lakes Pontchartrain and Maurepas.

A Storm Surge Watch is in effect from the Mouth of the Mississippi
River eastward to include the entire Mississippi coast. A Coastal
Flood Advisory is in effect for the Louisiana tidal lakes.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Tropical Storm conditions are expected for portions of the outlook
area generally from Lake Pontchartrain eastward through coastal
Mississippi Sunday through early Tuesday. Refer to the latest
tropical cyclone products issued by our office and the National
Hurricane Center for details.

Flash flooding willl be a significant concern for multiple inches
of rainfall through Thursday. See the latest Flash Flood Watch
products for more details.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is requested for flood monitoring and
eventually for tropical storm support Sunday through late Monday
or early Tuesday. Additional flood monitoring may be required
Tuesday through Thursday.

$$

24/RR




Tropical Storm Watch

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
1025 PM CDT Fri May 25 2018

...Tropical Storm Watches have been issued for much of the
Coastal Waters...

.Subtropical Storm Alberto will move towards the north-central
Gulf late this weekend and early next week. Tropical storm
conditions are possible beginning Sunday and lasting through
Tuesday morning.

GMZ530-532-534-536-538-552-555-557-572-575-577-261130-
/O.CON.KLIX.TR.A.1001.000000T0000Z-000000T0000Z/
Lake Pontchartrain and Lake Maurepas-Mississippi Sound-
Lake Borgne-Chandeleur Sound-Breton Sound-
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 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-
1025 PM CDT Fri May 25 2018

...TROPICAL STORM WATCH REMAINS IN EFFECT...

* WINDS...Sustained winds 40 to 60 mph with gust near hurricane
  force for the open waters east of the Mouth of the Mississippi
  River and Mississippi Sound. Sustained winds of 35 to 50 mph
  with higher gusts for the open waters south of the mouth of
  the Mississippi River along with Breton and Chandeleur Sounds.
  Sustained winds of 30 to 40 mph with higher gusts for the
  tidal lakes.

* WAVES/SEAS...Seas 16 to over 20 feet in the open waters east
  of the mouth of the Mississippi River. 12 to 18 feet for the
  waters south of the river. Waves 6 to 10 feet in the Sounds
  and 2 to 5 feet in the tidal lakes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tropical Storm Watch means sustained winds of 39 to 73 mph are
possible due to a tropical storm within 48 hours.

&&

$$




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