Alert archive / Louisiana / Special Marine Warnings in 2021

Special Marine Warning 503, NWS New Orleans, LA

August 30, 2021

NWS New Orleans, LA issued this special marine warning at Aug 30, 2021, 7:18 AM CDT. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 30, 2021, 7:18 AM CDT (12:18 UTC)
Expired: Aug 30, 2021, 7:45 AM CDT
In force: 27 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 0.0 in
Wind: 40.0 mph

What forecasters said that day

The local office's own words before this special marine warning 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 special marine warning went out at Aug 30, 6:38 AM CDT, 40 minutes earlier.

Area forecast discussion, Aug 30, 6:38 AM CDT, 40 minutes before

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In the hours before

Local storm report, Aug 30, 2:35 AM CDT, 4 hours 43 minutes before

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Local storm report, Aug 30, 2:39 AM CDT, 4 hours 39 minutes before

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Local storm report, Aug 30, 3:53 AM CDT, 3 hours 25 minutes before

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Local storm report, Aug 30, 4:25 AM CDT, 2 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
425 AM CDT MON AUG 30 2021

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

0409 AM     TROPICAL STORM   3 NNW MAGNOLIA          31.19N 90.48W
08/30/2021                   PIKE               MS   MESONET

            MESONET STATION MPAM6 PIKE. WIND GUSTS TO 52
            MPH.

&&

GP

Local storm report, Aug 30, 4:27 AM CDT, 2 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
427 AM CDT MON AUG 30 2021

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

0410 AM     NON-TSTM WND GST 3 SSE PORT ALLEN        30.41N 91.18W
08/30/2021  M45 MPH          EAST BATON ROUGE   LA   MESONET

            MESONET STATION 1311W LSU TIGER STADIUM.
            WIND GUST TO 45 MPH.

&&

GP

Local storm report, Aug 30, 4:33 AM CDT, 2 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
433 AM CDT MON AUG 30 2021

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

0415 AM     TROPICAL STORM   30 E VENICE             29.30N 88.85W
08/30/2021                   GMZ555             LA   AWOS

            AWOS STATION KMIS MAIN PASS 140B. WIND GUSTS
            TO 54 KNOTS.

&&

GP

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 7:48 PM CDT	Flash Flood Warning Considerable damage threat	LIX	Saint Charles, Saint John the Baptist	2 hr
Aug 29, 8:00 PM CDT	Special Marine Warning	LIX		30 min
Aug 29, 8:22 PM CDT	Tornado Warning	LIX	Saint Tammany	38 min
Aug 29, 8:35 PM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	LIX	Saint Charles, Saint John the Baptist	6 hr
Aug 29, 8:55 PM CDT	Flash Flood Warning EmergencyConsiderable damage threat	LIX	Livingston, Tangipahoa	3 hr
Aug 29, 9:05 PM CDT	River Flood Warning	LIX	Saint Tammany	12 days
Aug 29, 9:05 PM CDT	River Flood Warning	LIX	Saint Tammany	21 days
Aug 29, 9:05 PM CDT	River Flood Warning	LIX	Washington	63 hr
Aug 29, 9:05 PM CDT	River Flood Warning	LIX	Saint Tammany, Washington	11 days
Aug 29, 10:39 PM CDT	Special Marine Warning	LIX		51 min
Aug 29, 10:48 PM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	LIX	Jefferson	15 hr
Aug 29, 10:55 PM CDT	Special Marine Warning	LIX		20 min
Aug 29, 11:45 PM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	LIX	Plaquemines	10 hr
Aug 29, 11:50 PM CDT	Flash Flood Warning Considerable damage threat	LIX	Livingston, Saint Helena, Saint Tammany, Tangipahoa, Washington	3 hr
Aug 30, 12:05 AM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	LIX	Livingston, Tangipahoa	12 hr
Aug 30, 1:24 AM CDT	Flash Flood Warning	LIX	Livingston, Saint Helena	8 hr
Aug 30, 2:24 AM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	LIX	Saint Charles, Saint John the Baptist	8 hr
Aug 30, 2:39 AM CDT	Flash Flood Warning Considerable damage threat	LIX	Saint Tammany	9 hr
Aug 30, 2:55 AM CDT	Flash Flood Warning Considerable damage threat	LIX	Livingston, Saint Helena, Saint Tammany, Tangipahoa, Washington	5 hr
Aug 30, 3:55 AM CDT	Flash Flood Warning	LIX	East Feliciana, Saint Helena, Tangipahoa, Washington	5 hr
Aug 30, 4:19 AM CDT	Small Craft Advisory	LIX		39 hr
Aug 30, 4:51 AM CDT	Coastal Flood Advisory	LIX	Assumption	15 hr
Aug 30, 7:15 AM CDT	Special Marine Warning	LIX		30 min
Aug 30, 7:45 AM CDT	Flash Flood Warning	LIX	Livingston, Saint Helena, Saint Tammany, Tangipahoa, Washington	3 hr
Aug 30, 9:01 AM CDT	Special Marine Warning	LIX		89 min
Aug 30, 9:58 AM CDT	Areal Flood Warning	LIX	Jefferson, Lafourche, Livingston, Plaquemines, Saint Charles, Saint James and 1 more	60 hr
Aug 30, 10:53 AM CDT	Areal Flood Warning	LIX	Saint Tammany, Tangipahoa, Washington	35 hr
Aug 30, 11:04 AM CDT	Areal Flood Warning	LIX	Saint Helena, Saint Tammany, Tangipahoa, Washington	35 hr
Aug 30, 11:34 AM CDT	Areal Flood Warning	LIX	Saint Tammany, Washington	34 hr
Aug 30, 12:24 PM CDT	Areal Flood Warning	LIX	Ascension, Livingston, Saint John the Baptist, Saint Tammany, Tangipahoa	33 hr
Aug 30, 2:57 PM CDT	Heat Advisory	LIX	Assumption, East Baton Rouge, Iberville, Orleans, Saint Bernard, Saint James and 2 more	26 hr
Aug 30, 6:10 PM CDT	Special Marine Warning	LIX		95 min
Aug 29, 9:04 PM CDT	Tornado Warning	LIX	Hancock, Harrison, Pearl River	26 min
Aug 29, 9:05 PM CDT	River Flood Warning	LIX	Pike, Walthall	38 hr
Aug 29, 9:06 PM CDT	River Flood Warning	LIX	Jackson	9 days
Aug 29, 9:32 PM CDT	Tornado Warning	LIX	Hancock, Pearl River	13 min
Aug 29, 9:36 PM CDT	Tornado Warning	LIX	Hancock, Harrison, Pearl River	24 min
Aug 29, 10:01 PM CDT	Tornado Warning	LIX	Hancock, Harrison, Pearl River	14 min
Aug 29, 10:34 PM CDT	Tornado Warning	LIX	Hancock, Harrison, Pearl River	41 min
Aug 29, 11:45 PM CDT	Tornado Warning	LIX	Hancock, Harrison	31 min
Aug 30, 12:41 AM CDT	Tornado Warning	LIX	Harrison, Jackson	49 min
Aug 30, 2:47 AM CDT	Tornado Warning	LIX	Harrison, Jackson	47 min
Aug 30, 2:55 AM CDT	Tornado Warning	LIX	Jackson	65 min
Aug 30, 4:11 AM CDT	Flash Flood Warning	LIX	Harrison, Jackson	8 hr
Aug 30, 5:43 AM CDT	Flash Flood Warning	LIX	Pearl River	5 hr
Aug 30, 7:28 AM CDT	Tornado Warning	LIX	Jackson	22 min
Aug 30, 7:37 AM CDT	Tornado Warning	LIX	Harrison	23 min
Aug 30, 8:02 AM CDT	Tornado Warning	LIX	Harrison, Jackson	28 min
Aug 30, 9:30 AM CDT	Tornado Warning	LIX	Jackson	60 min
Aug 30, 11:17 AM CDT	Tornado Warning	LIX	Jackson	28 min
Aug 30, 12:33 PM CDT	Flash Flood Warning EmergencyConsiderable damage threat	LIX	Harrison, Jackson	3 hr
Aug 30, 3:51 PM CDT	Areal Flood Warning	LIX	Harrison, Jackson	30 hr

Nearby

Special Marine Warnings in Louisiana, 2021 Every special marine warning 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.