Alert archive / Louisiana / Small Craft Advisories in 2021

Small Craft Advisory 33, NWS New Orleans, LA

May 20, 2021

NWS New Orleans, LA issued this small craft advisory at May 20, 2021, 3:56 PM CDT. It took effect at May 21, 2021, 10:39 AM CDT. It was in force for 41 hr.

The area

The counties it named.

The facts

Issued: May 20, 2021, 3:56 PM CDT (20:56 UTC)
In effect from: May 21, 2021, 10:39 AM CDT
Expired: May 23, 2021, 4:00 AM CDT
In force: 41 hr
Issued by: NWS New Orleans, LA

The text

As transmitted.

743 
WHUS74 KLIX 202056
MWWLIX

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
356 PM CDT Thu May 20 2021

GMZ550-552-555-570-572-575-210500-
/O.EXT.KLIX.SC.Y.0032.000000T0000Z-210520T2100Z/
/O.NEW.KLIX.GL.W.0006.210520T2100Z-210521T1700Z/
/O.NEW.KLIX.SC.Y.0033.210521T1700Z-210522T0000Z/
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 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-
356 PM CDT Thu May 20 2021

...GALE WARNING IN EFFECT UNTIL NOON CDT FRIDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TO 7 PM CDT FRIDAY...

* WHAT...Southeast winds 20 to 25 knots. Frequent gale force gusts
  are expected during the Gale warning. Seas 7 to 10 ft. 

* WHERE...Open Gulf waters from Boothville to the Atchafalaya
  River out 60 NM.

* WHEN...For the Gale Warning, until noon CDT Friday. For the 
  Small Craft Advisory, from noon to 7 PM CDT Friday.

* IMPACTS...Strong winds will cause hazardous seas which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

GMZ557-577-210500-
/O.EXT.KLIX.SC.Y.0031.000000T0000Z-210520T2100Z/
/O.NEW.KLIX.GL.W.0006.210520T2100Z-210521T1700Z/
/O.NEW.KLIX.SC.Y.0033.210521T1700Z-210522T0000Z/
Coastal waters from Pascagoula Mississippi to Stake Island out
20 NM-
Coastal waters from Pascagoula Mississippi to Stake Island
Louisiana out 20 to 60 NM-
356 PM CDT Thu May 20 2021

...GALE WARNING IN EFFECT UNTIL NOON CDT FRIDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TO 7 PM CDT FRIDAY...

* WHAT...Southeast winds 20 to 25 knots. Frequent gale force gusts
  are expected during the Gale warning. Seas 7 to 10 ft. 

* WHERE...Open Gulf waters from Stake Island to Pascagoula out 60
  NM.

* WHEN...For the Gale Warning, until noon CDT Friday. For the 
  Small Craft Advisory, from noon to 7 PM CDT Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

GMZ532-536-538-210500-
/O.CON.KLIX.SC.Y.0031.000000T0000Z-210522T0000Z/
Mississippi Sound-Chandeleur Sound-Breton Sound-
356 PM CDT Thu May 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT FRIDAY...

* WHAT...East winds 20 to 25 kt and waves 4 to 6 ft.

* WHERE...Mississippi Sound, Chandeleur Sound and Breton Sound

* WHEN...Until 7 PM CDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ530-534-210500-
/O.CON.KLIX.SC.Y.0032.000000T0000Z-210522T0000Z/
Lake Pontchartrain and Lake Maurepas-Lake Borgne-
356 PM CDT Thu May 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT FRIDAY...

* WHAT...Southeast winds 20 to 25 kt and waves 3 to 6 feet.

* WHERE...Lake Pontchartrain, Lake Maurepas and Lake Borgne

* WHEN...Until 7 PM CDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

9 follow-up statements

596 
WHUS74 KLIX 210337
MWWLIX

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
1037 PM CDT Thu May 20 2021

GMZ550-552-555-557-570-572-575-577-211145-
/O.CON.KLIX.GL.W.0006.000000T0000Z-210521T1700Z/
/O.CON.KLIX.SC.Y.0033.210521T1700Z-210522T0000Z/
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-
1037 PM CDT Thu May 20 2021

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CDT FRIDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON TO 7 PM CDT
FRIDAY...

* WHAT...For the Gale Warning, southeast winds 20 to 30 kt with 
  gusts up to 40 kt and seas 7 to 10 ft. For the Small Craft 
  Advisory, east winds 20 to 25 kt with gusts up to 40 kt and 
  seas 6 to 11 ft expected.

* WHERE...All of the open Gulf waters. 

* WHEN...For the Gale Warning, until noon CDT Friday. For the 
  Small Craft Advisory, from noon to 7 PM CDT Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

GMZ532-536-538-211145-
/O.CON.KLIX.SC.Y.0031.000000T0000Z-210522T0000Z/
Mississippi Sound-Chandeleur Sound-Breton Sound-
1037 PM CDT Thu May 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT FRIDAY...

* WHAT...East winds 20 to 25 kt with gusts up to 40 kt.

* WHERE...Breton Sound, Mississippi Sound and Chandeleur Sound.

* WHEN...Until 7 PM CDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ530-534-211145-
/O.CON.KLIX.SC.Y.0032.000000T0000Z-210522T0000Z/
Lake Pontchartrain and Lake Maurepas-Lake Borgne-
1037 PM CDT Thu May 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT FRIDAY...

* WHAT...East winds 20 to 25 kt with gusts up to 35 kt.

* WHERE...Lake Pontchartrain and Lake Maurepas and Lake Borgne.

* WHEN...Until 7 PM CDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

712 
WHUS74 KLIX 210838
MWWLIX

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
338 AM CDT Fri May 21 2021

GMZ550-552-555-557-570-572-575-577-211645-
/O.CON.KLIX.GL.W.0006.000000T0000Z-210521T1700Z/
/O.EXT.KLIX.SC.Y.0033.210521T1700Z-210522T0900Z/
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-
338 AM CDT Fri May 21 2021

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CDT TODAY...
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM NOON TODAY TO 4 AM CDT
SATURDAY...

* WHAT...For the Gale Warning, southeast winds 25 to 35 kt with
  gusts up to 40 kt and seas 10 to 14 ft. For the Small Craft
  Advisory, east winds 25 kt with gusts up to 35 kt and seas 8 to
  12 ft expected.

* WHERE...Portions of Gulf of Mexico. 

* WHEN...For the Gale Warning, until noon CDT today. For the 
  Small Craft Advisory, from noon today to 4 AM CDT Saturday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

GMZ532-536-538-211645-
/O.EXT.KLIX.SC.Y.0031.000000T0000Z-210522T0900Z/
Mississippi Sound-Chandeleur Sound-Breton Sound-
338 AM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM CDT SATURDAY...

* WHAT...East winds 25 kt with gusts up to 40 kt.

* WHERE...Breton Sound, Mississippi Sound and Chandeleur Sound.

* WHEN...Until 4 AM CDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ530-534-211645-
/O.EXT.KLIX.SC.Y.0032.000000T0000Z-210522T0900Z/
Lake Pontchartrain and Lake Maurepas-Lake Borgne-
338 AM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM CDT SATURDAY...

* WHAT...East winds 25 kt with gusts up to 35 kt.

* WHERE...Lake Pontchartrain and Lake Maurepas and Lake Borgne.

* WHEN...Until 4 AM CDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

007 
WHUS74 KLIX 211539
MWWLIX

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
1039 AM CDT Fri May 21 2021

GMZ550-552-555-557-570-572-575-577-212345-
/O.CAN.KLIX.GL.W.0006.000000T0000Z-210521T1700Z/
/O.EXT.KLIX.SC.Y.0033.210521T1539Z-210522T0900Z/
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-
1039 AM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM CDT SATURDAY...
...GALE WARNING IS CANCELLED...

* WHAT...East winds 20 to 30 kt with gusts up to 35 kt and seas 8
  to 12 ft expected.

* WHERE...Portions of Gulf of Mexico. 

* WHEN...Until 4 AM CDT Saturday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ532-536-538-212345-
/O.CON.KLIX.SC.Y.0031.000000T0000Z-210522T0900Z/
Mississippi Sound-Chandeleur Sound-Breton Sound-
1039 AM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT
SATURDAY...

* WHAT...East winds 20 to 30 kt with gusts up to 35 kt.

* WHERE...Breton Sound, Mississippi Sound and Chandeleur Sound.

* WHEN...Until 4 AM CDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ530-534-212345-
/O.CON.KLIX.SC.Y.0032.000000T0000Z-210522T0900Z/
Lake Pontchartrain and Lake Maurepas-Lake Borgne-
1039 AM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT
SATURDAY...

* WHAT...East winds 20 to 30 kt with gusts up to 35 kt.

* WHERE...Lake Pontchartrain and Lake Maurepas and Lake Borgne.

* WHEN...Until 4 AM CDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

669 
WHUS74 KLIX 212114
MWWLIX

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
414 PM CDT Fri May 21 2021

GMZ550-552-555-557-570-572-575-577-220515-
/O.EXT.KLIX.SC.Y.0033.000000T0000Z-210523T0900Z/
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-
414 PM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM CDT SUNDAY...

* WHAT...East winds 20 to 25 kt with gusts 30 to 35 kt and seas 8
  to 12 ft expected.

* WHERE...Portions of Gulf of Mexico.

* WHEN...Until 4 AM CDT Sunday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ532-536-538-220515-
/O.CON.KLIX.SC.Y.0031.000000T0000Z-210522T0900Z/
Mississippi Sound-Chandeleur Sound-Breton Sound-
414 PM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT
SATURDAY...

* WHAT...East winds 20 to 25 kt with gusts up to 30 kt.

* WHERE...Breton Sound, Mississippi Sound and Chandeleur Sound.

* WHEN...Until 4 AM CDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ530-534-220515-
/O.CON.KLIX.SC.Y.0032.000000T0000Z-210522T0900Z/
Lake Pontchartrain and Lake Maurepas-Lake Borgne-
414 PM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT
SATURDAY...

* WHAT...East winds 20 to 25 kt with gusts up to 30 kt.

* WHERE...Lake Pontchartrain and Lake Maurepas and Lake Borgne.

* WHEN...Until 4 AM CDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

237 
WHUS74 KLIX 220235
MWWLIX

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
935 PM CDT Fri May 21 2021

GMZ532-536-538-220900-
/O.CON.KLIX.SC.Y.0031.000000T0000Z-210522T0900Z/
Mississippi Sound-Chandeleur Sound-Breton Sound-
935 PM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT
SATURDAY...

* WHAT...East winds near 20 kt with gusts up to 30 kt and waves of
  4 to 6 feet.

* WHERE...Breton Sound, Mississippi Sound and Chandeleur Sound.

* WHEN...Until 4 AM CDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ530-534-220900-
/O.CON.KLIX.SC.Y.0032.000000T0000Z-210522T0900Z/
Lake Pontchartrain and Lake Maurepas-Lake Borgne-
935 PM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT
SATURDAY...

* WHAT...East winds near 20 kt with gusts up to 30 kt and waves of
  3 to 5 feet.

* WHERE...Lake Pontchartrain and Lake Maurepas and Lake Borgne.

* WHEN...Until 4 AM CDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ550-552-555-557-570-572-575-577-221045-
/O.CON.KLIX.SC.Y.0033.000000T0000Z-210523T0900Z/
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-
935 PM CDT Fri May 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT SUNDAY...

* WHAT...East winds 20 to 25 kt with gusts up to 35 kt and seas 7
  to 10 ft.

* WHERE...All of the open waters of the Gulf of Mexico.

* WHEN...Until 4 AM CDT Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PG

382 
WHUS74 KLIX 220921
MWWLIX

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
421 AM CDT Sat May 22 2021

GMZ532-536-538-221030-
/O.EXP.KLIX.SC.Y.0031.000000T0000Z-210522T0900Z/
Mississippi Sound-Chandeleur Sound-Breton Sound-
421 AM CDT Sat May 22 2021

...SMALL CRAFT ADVISORY HAS EXPIRED...

Winds and seas continue to ease but small craft caution 
statements remain.

$$

GMZ530-534-221030-
/O.EXP.KLIX.SC.Y.0032.000000T0000Z-210522T0900Z/
Lake Pontchartrain and Lake Maurepas-Lake Borgne-
421 AM CDT Sat May 22 2021

...SMALL CRAFT ADVISORY HAS EXPIRED...

Winds and seas continue to ease but small craft caution 
statements remain.

$$

GMZ550-552-555-557-570-572-575-577-221730-
/O.CON.KLIX.SC.Y.0033.000000T0000Z-210523T0900Z/
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-
421 AM CDT Sat May 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT SUNDAY...

* WHAT...East winds 20 to 25 kt with gusts up to 30 kt and seas 6
  to 10 ft.

* WHERE...Portions of Gulf of Mexico. 

* WHEN...Until 4 AM CDT Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

940 
WHUS74 KLIX 221555
MWWLIX

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
1055 AM CDT Sat May 22 2021

GMZ550-552-555-557-570-572-575-577-230000-
/O.CON.KLIX.SC.Y.0033.000000T0000Z-210523T0900Z/
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-
1055 AM CDT Sat May 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT SUNDAY...

* WHAT...East winds 20 to 25 kt with gusts up to 30 kt and seas 
  6 to 10 ft.

* WHERE...Portions of Gulf of Mexico.

* WHEN...Until 4 AM CDT Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

137 
WHUS74 KLIX 222100
MWWLIX

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
400 PM CDT Sat May 22 2021

GMZ536-538-230300-
/O.EXB.KLIX.SC.Y.0033.000000T0000Z-210523T0300Z/
Chandeleur Sound-Breton Sound-
400 PM CDT Sat May 22 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

* WHAT...East to southeast winds near 20 knots.

* WHERE...Chandeleur Sound and Breton Sound.

* WHEN...Until 10 PM CDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ557-230300-
/O.EXT.KLIX.SC.Y.0033.000000T0000Z-210523T0300Z/
Coastal waters from Pascagoula Mississippi to Stake Island out
20 NM-
400 PM CDT Sat May 22 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

* WHAT...East winds near 20 kt with gusts up to 30 kt and seas 5
  to 8 ft.

* WHERE...Portions of Gulf of Mexico.

* WHEN...Until 10 PM CDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

GMZ550-552-555-570-572-575-577-230500-
/O.CON.KLIX.SC.Y.0033.000000T0000Z-210523T0900Z/
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 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-
400 PM CDT Sat May 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT SUNDAY...

* WHAT...East winds 20 to 25 kt with gusts up to 30 kt and seas 6
  to 8 ft.

* WHERE...Portions of Gulf of Mexico.

* WHEN...Until 4 AM CDT Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

660 
WHUS74 KLIX 230252
MWWLIX

URGENT - MARINE WEATHER MESSAGE
National Weather Service New Orleans LA
952 PM CDT Sat May 22 2021

GMZ536-538-557-230400-
/O.CAN.KLIX.SC.Y.0033.000000T0000Z-210523T0300Z/
Chandeleur Sound-Breton Sound-
Coastal waters from Pascagoula Mississippi to Stake Island out
20 NM-
952 PM CDT Sat May 22 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

Winds and seas have fallen below advisory levels. Small craft
should continue to exercise caution due to winds of 15 to 20 knots
and seas of up to 6 feet.

$$

GMZ577-230400-
/O.CAN.KLIX.SC.Y.0033.000000T0000Z-210523T0900Z/
Coastal waters from Pascagoula Mississippi to Stake Island
Louisiana out 20 to 60 NM-
952 PM CDT Sat May 22 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

Winds and seas have fallen below advisory levels. Small craft
should continue to exercise caution due to winds of 15 to 20 knots
and seas of up to 6 feet..

$$

GMZ550-552-555-570-572-575-230900-
/O.CON.KLIX.SC.Y.0033.000000T0000Z-210523T0900Z/
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 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-
952 PM CDT Sat May 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT SUNDAY...

* WHAT...Seas 5 to 7 ft.

* WHERE...All of the open Gulf waters out to 60 nm from Stake
  Island and Boothville west to the Atchafalaya River.  

* WHEN...Until 4 AM CDT Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PG

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New Orleans, LA wrote its last area forecast discussion before this small craft advisory went out at May 20, 1:27 PM CDT, 2 hours 29 minutes earlier.

Area forecast discussion, May 20, 1:27 PM CDT, 2 hours 29 minutes before

Area Forecast Discussion
National Weather Service New Orleans LA
127 PM CDT Thu May 20 2021

.UPDATE...

Forecast has been on track with regards to greater coverage areas
of showers, thunderstorms and the heavier rain swaths. Flash
flooding has been ongoing across much of the Flash Flood Warning
areas this morning and early this afternoon. Refer to Local Storm
Reports for this information. Satellite, radar and surface/upper
air analysis all show a favorable pattern and a deep tap of
subtropical moisture with precipitable water values of 1.8 to 2.1
inches in the Flash Flood Watch area through tonight and western
portions of the forecastd area into Friday. Will likely extend the
Flash Flood Watch through tonight across the western/southern
portions of the watch area, possibly including New Orleans but not
the Northshore areas. 22/TD

&&

.AVIATION...

SHRA/TSRA will result in the lower IFR to briefly LIFR conditions
where heavier rain occurs, mainly at KBTR to possibly KHDC/KMCB
this afternoon, with lower confidence in occurrence of lower
conditions at KMSY/KNEW/KASD eastward. Otherwise, mostly
prevailing MVFR due to CIGS will continue through Friday morning.
East/southeast winds will remain moderate to strong with gusts of
25 to around 30 knots at times. 22/TD

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  80  67  82  64 /  90  30  30   0
BTR  80  70  81  67 / 100  60  60  10
ASD  80  70  81  66 /  90  40  30   0
MSY  81  73  81  71 / 100  50  50  10
GPT  80  71  81  68 /  60  20  10   0
PQL  80  69  81  66 /  40  10  10   0

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...Flash Flood Watch until 7 PM CDT this evening for LAZ034>037-039-
     046>050-056>061-063>072-075>078.

     Coastal Flood Advisory until 1 AM CDT Saturday for LAZ049-050-
     057-058-060-061-066>068-072-075-077.

     Wind Advisory until 7 PM CDT this evening for LAZ058>061-063>070-
     072-075>078.

     Coastal Flood Warning until 1 AM CDT Saturday for LAZ064-069-070-
     076-078.

GM...Small Craft Advisory until 7 PM CDT Friday for GMZ530-532-534-
     536-538-550-552-555-557-570-572-575-577.

     Flash Flood Watch until 7 PM CDT this evening for GMZ530.

MS...Flash Flood Watch until 7 PM CDT this evening for MSZ068>071-077-
     080.

     Coastal Flood Advisory until 1 AM CDT Saturday for MSZ081-082.

     Wind Advisory until 7 PM CDT this evening for MSZ080>082.

     Coastal Flood Warning until 1 AM CDT Saturday for MSZ080.

GM...Small Craft Advisory until 7 PM CDT Friday for GMZ532-534-536-
     538-550-552-555-557-570-572-575-577.

&&

In the hours before

Local storm report, May 20, 10:01 AM CDT, 5 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1001 AM CDT THU MAY 20 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0934 AM     TSTM WND GST     12 SSW MANDEVILLE       30.20N 90.12W
05/20/2021  M42 MPH          GMZ530             LA   MESONET

            MESONET STATION XPTN PONTCHARTRAIN CAUSEWAY.

&&

Local storm report, May 20, 12:50 PM CDT, 3 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1250 PM CDT THU MAY 20 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1230 PM     FLASH FLOOD      3 SW PRAIRIEVILLE       30.27N 91.01W
05/20/2021                   ASCENSION          LA   BROADCAST MEDIA

            WATER IN HOMES OFF OF RIDGE RD.

&&

DM

Local storm report, May 20, 1:42 PM CDT, 2 hours 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
142 PM CDT THU MAY 20 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1242 PM     FLASH FLOOD      4 S BAKER               30.52N 91.15W
05/20/2021                   EAST BATON ROUGE   LA   PUBLIC

            SEVERAL ROADS AROUND THE BATON ROUGE AIRPORT
            HAVE BEEN CLOSED DUE TO FLASH FLOODING .

1250 PM     FLASH FLOOD      4 E OAK HILLS PLACE     30.38N 91.02W
05/20/2021                   EAST BATON ROUGE   LA   PUBLIC

            ROAD CLOSED AT OLD PERKINS RD E & BARINGER
            FOREMAN RD.

1251 PM     FLASH FLOOD      GREENWELL SPRING        30.57N 90.99W
05/20/2021                   EAST BATON ROUGE   LA   PUBLIC

            SEVERAL ROADS CLOSED THROUGHOUT GREENWELL
            SPRINGS.

1255 PM     FLASH FLOOD      7 ENE PRAIRIEVILLE      30.33N 90.85W
05/20/2021                   ASCENSION          LA   PUBLIC

            ROADS CLOSED NEAR FRENCH SETTLEMENT DUE TO
            HIGH WATER AND FLASH FLOODING.

0100 PM     FLASH FLOOD      3 NNW PRAIRIEVILLE      30.34N 90.99W
05/20/2021                   ASCENSION          LA   PUBLIC

            SEVERAL ROADS CLOSED ALONG HWY 73 NEAR
            PRAIRIEVILLE DUE TO FLASH FLOODING.

&&

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 19, 7:03 PM CDT	Special Weather Statement	LIX	Saint Tammany	42 min
May 19, 7:24 PM CDT	Special Marine Warning	LIX		81 min
May 19, 8:00 PM CDT	Severe Thunderstorm Warning	LIX	Saint Charles, Saint John the Baptist	25 min
May 19, 8:30 PM CDT	Special Marine Warning	LIX		30 min
May 19, 9:19 PM CDT	Areal Flood Advisory	LIX	Ascension, East Baton Rouge, Iberville, Livingston	116 min
May 20, 3:42 AM CDT	Special Weather Statement	LIX	Ascension, Assumption, Iberville, Jefferson, Plaquemines, Saint Charles and 3 more	63 min
May 20, 4:05 AM CDT	Special Marine Warning	LIX		55 min
May 20, 4:18 AM CDT	Special Marine Warning	LIX		57 min
May 20, 5:03 AM CDT	Special Marine Warning	LIX		57 min
May 20, 5:33 AM CDT	Special Marine Warning	LIX		57 min
May 20, 7:00 AM CDT	Special Weather Statement	LIX	Assumption, Jefferson, Lafourche, Saint Charles, Saint James	60 min
May 20, 7:39 AM CDT	Tornado Warning	LIX	Jefferson	8 min
May 20, 7:42 AM CDT	Special Marine Warning	LIX		33 min
May 20, 8:27 AM CDT	Special Marine Warning	LIX		63 min
May 20, 8:37 AM CDT	Areal Flood Advisory	LIX	Ascension, Assumption, East Baton Rouge, Iberville, Lafourche, Livingston and 3 more	52 min
May 20, 8:58 AM CDT	Tornado Warning	LIX	East Feliciana	13 min
May 20, 9:29 AM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, Iberville, Livingston, West Baton Rouge	9 hr
May 20, 9:45 AM CDT	Flash Flood Warning	LIX	East Baton Rouge, East Feliciana, Saint Helena, West Feliciana	11 hr
May 20, 10:04 AM CDT	Flash Flood Warning	LIX	Ascension, Assumption, Iberville, Lafourche, Livingston, Saint James and 1 more	13 hr
May 20, 10:52 AM CDT	Severe Thunderstorm Warning	LIX	Saint Charles, Saint John the Baptist	19 min
May 20, 11:22 AM CDT	Special Marine Warning	LIX		38 min
May 20, 11:26 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Livingston, Saint Helena	94 min
May 20, 2:16 PM CDT	River Flood Warning	LIX	East Baton Rouge, Livingston	68 hr
May 20, 2:22 PM CDT	River Flood Warning	LIX	Ascension, Livingston	4 days
May 20, 2:33 PM CDT	Special Marine Warning	LIX		57 min
May 20, 2:40 PM CDT	River Flood Warning	LIX	East Baton Rouge	61 hr
May 20, 3:29 PM CDT	Special Marine Warning	LIX		61 min
May 20, 3:56 PM CDT	Gale Warning	LIX		19 hr
May 20, 3:56 PM CDT	Wind Advisory	LIX	Orleans, Saint Bernard, Saint John the Baptist, Saint Tammany	27 hr
May 20, 4:30 PM CDT	Special Marine Warning	LIX		90 min
May 20, 4:58 PM CDT	Special Weather Statement	LIX	Lafourche, Terrebonne	47 min
May 20, 5:16 PM CDT	Areal Flood Advisory	LIX	Assumption, Jefferson, Lafourche, Terrebonne	3 hr
May 20, 6:42 PM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, Iberville, Livingston, Saint Helena, West Baton Rouge	4 hr

Nearby

Small Craft Advisories in Louisiana, 2021 Every small craft advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.