Alert archive / Louisiana / River Flood Warnings in 2021

River Flood Warning 138, NWS New Orleans, LA

May 18, 2021Saint Tammany Parish, Louisiana

NWS New Orleans, LA issued this river flood warning at May 18, 2021, 10:54 AM CDT for Saint Tammany Parish, Louisiana. It took effect at May 19, 2021, 5:48 PM CDT. It was in force for 17 hr.

The area

The outline as issued.

The facts

Issued: May 18, 2021, 10:54 AM CDT (15:54 UTC)
In effect from: May 19, 2021, 5:48 PM CDT
Expired: May 20, 2021, 10:56 AM CDT
In force: 17 hr
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Flood severity: Minor

County Saint Tammany Parish, LA

The river

Written for the forecast point Bogue Chitto River near Bush (BSHL1). The gauge peaked at 10.27 ft at May 20, 2021, 4:00 AM CDT.

Action stage: 9 ft
Minor stage: 11 ft
Moderate stage: 15 ft
Major stage: 18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02492000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

778 
WGUS44 KLIX 181554
FLWLIX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service New Orleans LA
1054 AM CDT Tue May 18 2021

...The National Weather Service in New Orleans LA has issued a Flood 
Warning for the following rivers in Louisiana...

  Bogue Chitto River Near Bush affecting St. Tammany Parish.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Additional information is available at www.weather.gov/lix.  Click 
on the Rivers and Lakes menu for forecasts and observations.

The next statement will be issued this evening or when updates are 
needed.

&&


LAC103-191000-
/O.NEW.KLIX.FL.W.0138.210519T2248Z-210522T1800Z/
/BSHL1.1.ER.210519T2248Z.210520T0600Z.210522T1200Z.NO/
1054 AM CDT Tue May 18 2021

The National Weather Service in New Orleans has issued a

* Flood Warning for
  the Bogue Chitto River Near Bush.
* From Wednesday afternoon to Saturday afternoon.
* At 9:15 AM CDT Tuesday the stage was 8.5 feet.
* Flood stage is 11.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage 
  Wednesday afternoon to a crest of 11.5 feet early Thursday morning.
* Impact...At 11.0 feet, The access road upstream of the bridge will 
  flood. The river will leave the main channel on the left bank 
  below the bridge flooding woodlands on either side of Louisiana 
  Highway 21.


&&

LAT...LON 3067 8995 3063 8983 3053 8978 3053 8982
      3058 8986 3062 8999 3081 9018 3081 9012

$$

JFL

4 follow-up statements

114 
WGUS84 KLIX 190304
FLSLIX

Flood Statement
National Weather Service New Orleans LA
1004 PM CDT Tue May 18 2021

...The Flood Warning continues for the following rivers in 
Louisiana...

  Bogue Chitto River Near Bush affecting St. Tammany Parish.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Additional information is available at www.weather.gov/lix.  Click 
on the Rivers and Lakes menu for forecasts and observations.

The next statement will be issued when updates are needed.

&&


LAC103-192115-
/O.CON.KLIX.FL.W.0138.210519T2248Z-210522T1800Z/
/BSHL1.1.ER.210519T2248Z.210520T0600Z.210522T1200Z.NO/
1004 PM CDT Tue May 18 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Bogue Chitto River Near Bush.
* From Wednesday afternoon to Saturday afternoon.
* At 9:15 PM CDT Tuesday the stage was 8.7 feet.
* Flood stage is 11.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage 
  tomorrow afternoon to a crest of 11.5 feet early Thursday morning. 
  It will then fall below flood stage Saturday morning.
* Impact...At 11.0 feet, The access road upstream of the bridge will 
  flood. The river will leave the main channel on the left bank 
  below the bridge flooding woodlands on either side of Louisiana 
  Highway 21.


&&

LAT...LON 3067 8995 3063 8983 3053 8978 3053 8982
      3058 8986 3062 8999 3081 9018 3081 9012

$$

DM

167 
WGUS84 KLIX 191429
FLSLIX

Flood Statement
National Weather Service New Orleans LA
929 AM CDT Wed May 19 2021

...The Flood Warning continues for the following rivers in 
Louisiana...

  Bogue Chitto River Near Bush affecting St. Tammany Parish.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Additional information is available at www.weather.gov/lix.  Click 
on the Rivers and Lakes menu for forecasts and observations.

The next statement will be issued this evening or when updates are 
needed.

&&


LAC103-200830-
/O.EXT.KLIX.FL.W.0138.210521T0000Z-210521T1200Z/
/BSHL1.1.ER.210521T0000Z.210521T0000Z.210521T0600Z.NO/
929 AM CDT Wed May 19 2021

...The Flood Warning is now in effect until Friday morning...

The Flood Warning continues for
  the Bogue Chitto River Near Bush.
* From Thursday evening to Friday morning.
* At 9:15 AM CDT Wednesday the stage was 9.5 feet.
* Flood stage is 11.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise to near flood stage at 
  11.0 feet Thursday evening.
* Impact...At 11.0 feet, The access road upstream of the bridge will 
  flood. The river will leave the main channel on the left bank 
  below the bridge flooding woodlands on either side of Louisiana 
  Highway 21.


&&

LAT...LON 3067 8995 3063 8983 3053 8978 3053 8982
      3058 8986 3062 8999 3081 9018 3081 9012

$$

JFL

890 
WGUS84 KLIX 200139
FLSLIX

Flood Statement
National Weather Service New Orleans LA
839 PM CDT Wed May 19 2021

...The Flood Warning continues for the following rivers in 
Louisiana...

  Bogue Chitto River Near Bush affecting St. Tammany Parish.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Additional information is available at www.weather.gov/lix.  Click 
on the Rivers and Lakes menu for forecasts and observations.

The next statement will be issued when updates are needed.

&&


LAC103-201945-
/O.CON.KLIX.FL.W.0138.210521T0000Z-210521T1200Z/
/BSHL1.1.ER.210521T0000Z.210521T0000Z.210521T0600Z.NO/
839 PM CDT Wed May 19 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Bogue Chitto River Near Bush.
* From Thursday evening to Friday morning.
* At 8:15 PM CDT Wednesday the stage was 10.1 feet.
* Flood stage is 11.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to crest near flood stage at 11 
  feet tomorrow evening. It will then fall below flood stage early 
  Friday morning.
* Impact...At 11.0 feet, The access road upstream of the bridge will 
  flood. The river will leave the main channel on the left bank 
  below the bridge flooding woodlands on either side of Louisiana 
  Highway 21.


&&

LAT...LON 3067 8995 3063 8983 3053 8978 3053 8982
      3058 8986 3062 8999 3081 9018 3081 9012

$$

DM

886 
WGUS84 KLIX 201556
FLSLIX

Flood Statement
National Weather Service New Orleans LA
1056 AM CDT Thu May 20 2021

...The Flood Warning is cancelled for the following rivers in 
Louisiana...

  Bogue Chitto River Near Bush affecting St. Tammany Parish.


LAC103-201700-
/O.CAN.KLIX.FL.W.0138.210521T0000Z-210520T1556Z/
/BSHL1.1.ER.210521T0000Z.210521T0000Z.210521T0600Z.NO/
1056 AM CDT Thu May 20 2021

...The Flood Warning for the Bogue Chitto River Near Bush has been 
cancelled...

The Flood Warning is cancelled for
  the Bogue Chitto River Near Bush.
* At 9:15 AM CDT Thursday the stage was 10.2 feet.
* Flood stage is 11.0 feet.
* Forecast...The river is expected to rise to a crest of 10.2 feet 
  Saturday morning but remain below flood stage.


&&

LAT...LON 3067 8995 3063 8983 3053 8978 3053 8982
      3058 8986 3062 8999 3081 9018 3081 9012

$$

JFL

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at May 18, 3:57 AM CDT, 6 hours 57 minutes earlier.

Area forecast discussion, May 18, 3:57 AM CDT, 6 hours 57 minutes before

Area Forecast Discussion
National Weather Service New Orleans LA
357 AM CDT Tue May 18 2021

.SHORT TERM (Today through Thursday Night) Not a lot of difference
in thought from earlier fcast. A broad wake low behind the
heaviest band of sh/ts will remain through 7am today with winds of
30-40mph and a few gusts up to 50mph possible. These winds can
easily bring trees and powerlines down with already saturated
soils. A broad region of difluence and increased upper level
forcing will remain over portions of the forecast area through
Wednesday night. This region of enhanced lift will interact with a
plume of deep tropical moisture and moderate instability feeding
into the area to produce periods of shower and thunderstorm
activity. Precipitable water values will remain high in excess of
1.75 inches across the western half of the CWA, and light winds
aloft will allow for slow storm motion through Wed. Conditions
will turn more favorable by daylight today for convective
development through the afternoon hours as temperatures warm back
into the upper 70s and lower 80s. Given the slow storm motions
anticipated and moist adiabatic lapse rates in place, efficient
and slow moving thunderstorms could form. These warm and efficient
rain processes could produce rainfall rates in excess of 2 inches
per hour, and result in locally heavy rainfall over isolated
areas. Some of the higher rainfall totals through Wed could fall
over already flooded areas. As the rainfall extends northward,
more areas could fall under flooded conditions and the flash flood
watch will be extended northward as well.

The main heavy rainfall axis should shift back to the west toward
Texas by Wednesday afternoon as a strengthening mid to upper level
ridge axis begins to exert greater influence over the forecast area.
Increasing upper level subsidence and a pool of drier air in the mid-
levels will begin to spread into the region from the east.
This will bring lower precipitable water values and slightly lower
rain chances to the area with a fairly sharp east to west POP
gradient in place. Temperatures will also begin to warm as ridging
builds in with highs warming from the upper 70s and lower 80s into
the mid 80s. The convection will be largely diurnal on Wednesday
with most of the activity diminishing in the evening hours. A strong
subsident inversion should keep things somewhat dry Thursday
allowing the area to finally dry up somewhat.

.LONG TERM (Friday through Monday Night)...The ridge axis will
continue to build into the area with increasing subsidence and a
strong mid-level cap taking hold of most of the area. A sharp east
to west gradient in atmospheric moisture will be evident on Friday
with higher POP values across the western third of the CWA. By the
weekend, the high will be in firm control of the area with a strong
capping inversion and warmer than average temperatures in the upper
80s and lower 90s expected. There could be some isolated diurnal
convection across the western third of the CWA where just a bit more
moisture and less influence of the ridge is expected.
Overall, a much drier and warmer pattern is expected to develop by
the weekend.

&&

.AVIATION...Another round of showers and thunderstorms should begin
to develop during the late morning hours and continue to develop
through the afternoon. Brief periods of IFR conditions could
accompany these thunderstorms along with gusty winds from variable
directions depending on TS direction of approach.

&&

.MARINE...A tightening pressure gradient will bring increased
onshore flow to the area through the end of the week. Southeast
winds of 15 to 25 knots will produce rough seas due to a combination
of both wind waves and swell through Saturday. As a result, small
craft advisories are anticipated to continue over the open Gulf
waters and sounds through the end of the week. Tides will also be
higher along south and east facing shores and some minor coastal
flooding will be possible.

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  78  67  82  67 / 100  30  70  20
BTR  81  69  84  69 / 100  50  90  30
ASD  80  70  82  70 / 100  50  70  20
MSY  81  72  84  73 / 100  60  80  30
GPT  80  71  81  70 /  80  40  50  20
PQL  80  69  81  68 /  60  30  30  10

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...High Wind Warning until 7 AM CDT this morning for LAZ034>037-039-
     046>050-056>061-065>068-071-072-075.

     Flash Flood Watch through Wednesday morning for LAZ034>037-039-
     046>050-056>061-063>072-075>078.

     Coastal Flood Advisory until midnight CDT tonight for LAZ076-078.

GM...Small Craft Advisory until 7 AM CDT Wednesday for GMZ536-538-550-
     552-555-557-570-572-575-577.

     Flash Flood Watch through Wednesday morning for GMZ530.

     Small Craft Advisory until 9 AM CDT this morning for GMZ530-534.

MS...High Wind Warning until 7 AM CDT this morning for MSZ068>071.

     Flash Flood Watch through Wednesday morning for MSZ068>071-077-
     080.

     Coastal Flood Advisory until midnight CDT tonight for MSZ080.

GM...Small Craft Advisory until 7 AM CDT Wednesday for GMZ538-550-552-
     555-557-570-572-575-577.

     Small Craft Advisory until 9 AM CDT this morning for GMZ534.

&&

In the hours before

Special weather statement, May 18, 6:23 AM CDT, 4 hours 31 minutes before

Special Weather Statement
National Weather Service New Orleans LA
623 AM CDT Tue May 18 2021

LAZ063-064-069-070-181200-
Lower Plaquemines-Upper St. Bernard-Lower St. Bernard-Upper
Plaquemines-
623 AM CDT Tue May 18 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL ST. BERNARD AND
NORTHWESTERN PLAQUEMINES PARISHES...

At 623 AM CDT, radar indicated strong thunderstorms were located
along a line extending from 7 miles southwest of Pointe A La Hache to
near Port Sulphur to near Empire. Movement was northeast at 35 mph.

Wind gusts up to 50 mph are possible with these storms.

Locations impacted include...
Port Sulphur, Myrtle Grove, Pointe A La Hache, Empire, Buras, Shell
Beach, Poydras and Buras-triumph.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 2933 8964 2931 8987 2940 8978 2941 8987
      2948 8984 2942 8994 2949 8989 2945 8997
      2987 8995 2987 8951 2975 8965 2962 8964
      2961 8973 2940 8952 2941 8957 2940 8957
      2939 8956 2939 8945 2924 8954
TIME...MOT...LOC 1123Z 208DEG 29KT 2949 8988 2954 8973 2938 8958

SO

Local storm report, May 18, 7:15 AM CDT, 3 hours 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
715 AM CDT TUE MAY 18 2021

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

0630 AM     FLASH FLOOD      BATON ROUGE             30.36N 91.05W
05/18/2021                   EAST BATON ROUGE   LA   FIRE DEPT/RESCUE

            NUMEROUS VEHICLES UNDERWATER SOUTHERN PART
            OF EAST BATON ROUGE PARISH.

&&

TE

Local storm report, May 18, 7:36 AM CDT, 3 hours 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
736 AM CDT TUE MAY 18 2021

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

0615 AM     TSTM WND GST     16 SSW BURAS            29.12N 89.55W
05/18/2021  M46 MPH          GMZ552             LA   MESONET

            MESONET STATION KDLP 15 SSW BURAS.

&&

TE

Special weather statement, May 18, 10:17 AM CDT, 37 minutes before

Special Weather Statement
National Weather Service New Orleans LA
1017 AM CDT Tue May 18 2021

LAZ039-075-181545-
Washington-Northwest St. Tammany-
1017 AM CDT Tue May 18 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN ST. TAMMANY AND
SOUTHWESTERN WASHINGTON PARISHES...

At 1017 AM CDT, a strong thunderstorm was located near Abita Springs,
or near Covington, moving north at 20 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Covington, Abita Springs, Folsom, Sun and Enon.

This includes Interstate 12 near mile marker 62.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 3078 8993 3045 8990 3043 9011 3075 9027
      3076 9026
TIME...MOT...LOC 1517Z 171DEG 19KT 3053 9002

SO

Local storm report, May 18, 10:33 AM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1033 AM CDT TUE MAY 18 2021

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

0543 AM     TSTM WND DMG     VIOLET                  29.90N 89.89W
05/18/2021                   ST. BERNARD        LA   PUBLIC

            WIND DAMAGE IN VIOLET ON SOUTH LAKE BOULEVARD. DAMAGE
            CONSISTS OF SOME METAL AWNINGS AND A PATIO COVER ALONG
            WITH A WOODEN GAZEBO LIFTED AND MOVED. SEVERAL LARGE OAK
            TREE BRANCHES ALSO DOWN.

&&

98/SO

Special weather statement, May 18, 10:46 AM CDT, 8 minutes before

Special Weather Statement
National Weather Service New Orleans LA
1046 AM CDT Tue May 18 2021

LAZ039-072-075-181645-
Washington-Northwest St. Tammany-Southern Tangipahoa-
1046 AM CDT Tue May 18 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN ST.
TAMMANY...EAST CENTRAL TANGIPAHOA AND SOUTHERN WASHINGTON PARISHES...

At 1046 AM CDT, radar indicated strong thunderstorms were located
along a line extending from near Sun to near Covington. Movement was
northwest at 15 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Covington, Franklinton, Abita Springs, Folsom, Sun and Enon.

This includes Interstate 12 between mile markers 53 and 63.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 3093 9011 3072 8984 3041 9009 3056 9042
      3071 9029 3071 9026 3074 9025 3075 9026
TIME...MOT...LOC 1546Z 138DEG 15KT 3073 8993 3046 9014

SO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 7:09 PM CDT	Flash Flood Warning	LIX	East Baton Rouge	4 hr
May 17, 7:15 PM CDT	Special Weather Statement	LIX	West Baton Rouge	30 min
May 17, 8:48 PM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, Iberville	3 hr
May 17, 10:11 PM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	LIX	Ascension, East Baton Rouge, Iberville, Livingston	15 hr
May 17, 11:25 PM CDT	Areal Flood Advisory	LIX	Ascension, Assumption, Lafourche, Saint James	2 hr
May 17, 11:52 PM CDT	Flash Flood Warning	LIX	Ascension, Iberville	3 hr
May 17, 11:56 PM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, Livingston	3 hr
May 18, 1:12 AM CDT	High Wind Warning	LIX	Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Helena and 6 more	6 hr
May 18, 2:06 AM CDT	River Flood Warning	LIX	East Baton Rouge	33 hr
May 18, 2:13 AM CDT	Special Weather Statement	LIX	Terrebonne	47 min
May 18, 2:17 AM CDT	River Flood Warning	LIX	East Baton Rouge	21 days
May 18, 2:17 AM CDT	River Flood Warning	LIX	East Baton Rouge, Livingston	21 days
May 18, 2:17 AM CDT	River Flood Warning	LIX	Ascension, Livingston	21 days
May 18, 2:17 AM CDT	Special Marine Warning	LIX		13 min
May 18, 2:23 AM CDT	Tornado Warning	LIX	Saint Tammany, Tangipahoa	12 min
May 18, 2:24 AM CDT	River Flood Warning	LIX	Saint Helena	62 hr
May 18, 2:24 AM CDT	River Flood Warning	LIX	Livingston	5 days
May 18, 2:26 AM CDT	River Flood Warning	LIX	Tangipahoa	57 hr
May 18, 2:39 AM CDT	Special Marine Warning	LIX		66 min
May 18, 2:44 AM CDT	Special Marine Warning	LIX		16 min
May 18, 2:47 AM CDT	Special Weather Statement	LIX	Saint Tammany	28 min
May 18, 2:49 AM CDT	Tornado Warning	LIX	Saint Tammany	26 min
May 18, 2:56 AM CDT	Flash Flood Warning	LIX	Saint Charles	3 hr
May 18, 2:57 AM CDT	Flash Flood Warning	LIX	Ascension, Iberville	6 hr
May 18, 3:14 AM CDT	Special Marine Warning	LIX		46 min
May 18, 3:17 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Saint Charles	13 min
May 18, 3:20 AM CDT	Tornado Warning	LIX	Jefferson, Saint Charles	16 min
May 18, 3:29 AM CDT	Special Marine Warning	LIX		61 min
May 18, 3:57 AM CDT	Special Weather Statement	LIX	Jefferson	63 min
May 18, 4:19 AM CDT	Special Weather Statement	LIX	Orleans, Saint Charles	56 min
May 18, 4:31 AM CDT	Special Marine Warning	LIX		44 min
May 18, 4:50 AM CDT	Flash Flood Warning	LIX	Jefferson, Orleans, Plaquemines	3 hr
May 18, 5:13 AM CDT	Special Weather Statement	LIX	Jefferson, Orleans, Plaquemines	62 min
May 18, 5:26 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	49 min
May 18, 5:35 AM CDT	Special Marine Warning	LIX		55 min
May 18, 5:39 AM CDT	Special Marine Warning	LIX		51 min
May 18, 6:23 AM CDT	Special Weather Statement	LIX	Plaquemines	37 min
May 18, 6:26 AM CDT	Special Marine Warning	LIX		34 min
May 18, 6:32 AM CDT	Special Marine Warning	LIX		58 min
May 18, 6:39 AM CDT	Special Marine Warning	LIX		66 min
May 18, 6:42 AM CDT	Special Marine Warning	LIX		63 min
May 18, 7:04 AM CDT	Special Marine Warning	LIX		26 min
May 18, 8:13 AM CDT	Areal Flood Advisory	LIX	Saint Tammany	3 hr
May 18, 8:20 AM CDT	Special Marine Warning	LIX		55 min
May 18, 9:01 AM CDT	Special Marine Warning	LIX		59 min
May 18, 9:21 AM CDT	Flash Flood Warning	LIX	Ascension, Assumption, Iberville	3 hr
May 18, 9:59 AM CDT	River Flood Warning	LIX	Saint Tammany	60 hr
May 18, 9:59 AM CDT	River Flood Warning	LIX	Saint Tammany	17 hr
May 18, 10:06 AM CDT	River Flood Warning	LIX	Saint Tammany	72 hr
May 18, 10:06 AM CDT	River Flood Warning	LIX	Saint Tammany	24 hr
May 18, 10:16 AM CDT	River Flood Warning	LIX	Saint Helena	57 hr
May 18, 10:17 AM CDT	Special Weather Statement	LIX	Saint Tammany	28 min
May 18, 10:46 AM CDT	Special Weather Statement	LIX	Washington	59 min
May 18, 10:51 AM CDT	River Flood Warning	LIX	Saint Tammany, Washington	7 days
May 18, 11:24 AM CDT	River Flood Warning	LIX	Ascension, Livingston	8 days
May 18, 3:38 PM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, Iberville, Livingston	4 hr
May 18, 3:49 PM CDT	Special Marine Warning	LIX		56 min
May 18, 4:00 PM CDT	Coastal Flood Warning	LIX	Orleans, Saint Bernard, Saint James, Saint John the Baptist, Saint Tammany	6 days
May 18, 4:22 PM CDT	Areal Flood Advisory	LIX	East Baton Rouge, Livingston, Saint Helena	3 hr
May 18, 5:13 PM CDT	Special Marine Warning	LIX		32 min

Nearby

River Flood Warnings in Louisiana, 2021 Every river flood 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; the gauge from the NWS water service and the USGS.