Alert archive / Louisiana / Coastal Flood Warnings in 2021
Coastal Flood Warning 2, NWS New Orleans, LA
NWS New Orleans, LA issued this coastal flood warning at Jun 17, 2021, 1:30 PM CDT for Orleans Parish, Saint Bernard Parish, Saint Tammany Parish, Louisiana. It took effect at Jun 18, 2021, 1:00 PM CDT. It was in force for 24 hr. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 17, 2021, 1:30 PM CDT (18:30 UTC)
- In effect from
- Jun 18, 2021, 1:00 PM CDT
- Expired
- Jun 19, 2021, 12:42 PM CDT
- In force
- 24 hr
- Issued by
- NWS New Orleans, LA
Counties Orleans Parish, LA, Saint Bernard Parish, LA, Saint Tammany Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 11:30 PM CDT | FLASH FLOOD | 2 E Lacombe, LA | STREET FLOODING LEADING TO VEHICLES STALLING AND BEING STRANDED. |
| Jun 18, 11:31 PM CDT | FLASH FLOOD | Slidell, LA | EXTENSIVE STREET FLOODING REPORTED IN NEIGHBORHOODS OFF OF GAUSE AND FREMAUX BOULEVARDS. |
| Jun 19, 12:13 AM CDT | FLASH FLOOD | 3 Ne Slidell, LA | NUMEROUS STREETS IMPASSIBLE AND HIGH WATER RESCUES OCCURRING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.5 hours before the alert went out and 24 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1653 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
590 WHUS44 KLIX 171830 CFWLIX URGENT - IMMEDIATE BROADCAST REQUESTED Coastal Hazard Message National Weather Service New Orleans LA 130 PM CDT Thu Jun 17 2021 LAZ064-066>070-076-078-MSZ080>082-180230- /O.NEW.KLIX.CF.W.0002.210618T1800Z-210620T0000Z/ Upper St. Bernard-Lower Terrebonne-Lower Lafourche- Lower Jefferson-Lower Plaquemines-Lower St. Bernard- Southeast St. Tammany-Eastern Orleans-Hancock-Harrison-Jackson- 130 PM CDT Thu Jun 17 2021 ...COASTAL FLOOD WARNING IN EFFECT FROM 1 PM FRIDAY TO 7 PM CDT SATURDAY... * WHAT...Significant coastal flooding expected with up to 2 to 3 feet of inundation. * WHERE...Portions of southeast and southern Mississippi and southeast Louisiana. * WHEN...From 1 PM Friday to 7 PM CDT Saturday. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide cycle, but this will mostly be a wind driven coastal flood event that should see water levels rise quickly during the Friday through Saturday morning period. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. && $$ LAZ049-050-058-060-061-072-075-077-180230- /O.NEW.KLIX.CF.Y.0009.210618T1800Z-210620T0000Z/ Ascension-Livingston-St. John The Baptist-St. Charles- Upper Jefferson-Southern Tangipahoa-Northwest St. Tammany- Western Orleans- 130 PM CDT Thu Jun 17 2021 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 1 PM FRIDAY TO 7 PM CDT SATURDAY... * WHAT...Minor coastal flooding expected with 1 to 2 feet of inundation. * WHERE...Ascension, Livingston, St. John The Baptist, St. Charles, Upper Jefferson, Southern Tangipahoa, Northwest St. Tammany and Western Orleans Parishes. * WHEN...From 1 PM Friday to 7 PM CDT Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide, but this will mostly be a wind driven coastal flood event that should see water levels rise quickly during the Friday through Saturday morning period. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$ TD
8 follow-up statements
394 WHUS44 KLIX 180246 CFWLIX Coastal Hazard Message National Weather Service New Orleans LA 946 PM CDT Thu Jun 17 2021 LAZ064-066>070-076-078-MSZ080>082-181315- /O.CON.KLIX.CF.W.0002.210618T1800Z-210620T0000Z/ Upper St. Bernard-Lower Terrebonne-Lower Lafourche- Lower Jefferson-Lower Plaquemines-Lower St. Bernard- Southeast St. Tammany-Eastern Orleans-Hancock-Harrison-Jackson- 946 PM CDT Thu Jun 17 2021 ...COASTAL FLOOD WARNING REMAINS IN EFFECT FROM 1 PM FRIDAY TO 7 PM CDT SATURDAY... * WHAT...Coastal flooding expected with up to 2 to 3 feet of inundation. * WHERE...Portions of southeast and southern Mississippi and southeast Louisiana. * WHEN...From 1 PM Friday to 7 PM CDT Saturday. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide cycle, but this will mostly be a wind driven coastal flood event that should see water levels rise quickly during the Friday through Saturday morning period. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. && $$ LAZ049-050-058-060-061-072-075-077-181315- /O.CON.KLIX.CF.Y.0009.210618T1800Z-210620T0000Z/ Ascension-Livingston-St. John The Baptist-St. Charles- Upper Jefferson-Southern Tangipahoa-Northwest St. Tammany- Western Orleans- 946 PM CDT Thu Jun 17 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 1 PM FRIDAY TO 7 PM CDT SATURDAY... * WHAT...Minor coastal flooding expected with 1 to 2 feet of inundation. * WHERE...Ascension, Livingston, St. John The Baptist, St. Charles, Upper Jefferson, Southern Tangipahoa, Northwest St. Tammany and Western Orleans Parishes. * WHEN...From 1 PM Friday to 7 PM CDT Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide, but this will mostly be a wind driven coastal flood event that should see water levels rise quickly during the Friday through Saturday morning period. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
784 WHUS44 KLIX 180909 CFWLIX Coastal Hazard Message National Weather Service New Orleans LA 409 AM CDT Fri Jun 18 2021 LAZ064-066>070-076-078-MSZ080>082-181715- /O.CON.KLIX.CF.W.0002.210618T1800Z-210620T0000Z/ Upper St. Bernard-Lower Terrebonne-Lower Lafourche- Lower Jefferson-Lower Plaquemines-Lower St. Bernard- Southeast St. Tammany-Eastern Orleans-Hancock-Harrison-Jackson- 409 AM CDT Fri Jun 18 2021 ...COASTAL FLOOD WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT SATURDAY... * WHAT...Coastal flooding expected with up to 2 to 3 feet of inundation. * WHERE...Portions of southeast and southern Mississippi and southeast Louisiana. * WHEN...From 1 PM today to 7 PM CDT Saturday. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide cycle, but this will mostly be a wind driven coastal flood event that should see water levels rise today through Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. && $$ LAZ049-050-058-060-061-072-075-077-181715- /O.CON.KLIX.CF.Y.0009.210618T1800Z-210620T0000Z/ Ascension-Livingston-St. John The Baptist-St. Charles- Upper Jefferson-Southern Tangipahoa-Northwest St. Tammany- Western Orleans- 409 AM CDT Fri Jun 18 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT SATURDAY... * WHAT...Minor coastal flooding expected with 1 to 2 feet of inundation. * WHERE...Ascension, Livingston, St. John The Baptist, St. Charles, Upper Jefferson, Southern Tangipahoa, Northwest St. Tammany and Western Orleans Parishes. * WHEN...From 1 PM today to 7 PM CDT Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide, but this will mostly be a wind driven coastal flood event that should see water levels rise quickly today through Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
987 WHUS44 KLIX 182217 CFWLIX Coastal Hazard Message National Weather Service New Orleans LA 517 PM CDT Fri Jun 18 2021 LAZ064-066>070-076-078-MSZ080>082-190630- /O.CON.KLIX.CF.W.0002.000000T0000Z-210620T0000Z/ Upper St. Bernard-Lower Terrebonne-Lower Lafourche- Lower Jefferson-Lower Plaquemines-Lower St. Bernard- Southeast St. Tammany-Eastern Orleans-Hancock-Harrison-Jackson- 517 PM CDT Fri Jun 18 2021 ...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 7 PM CDT SATURDAY... * WHAT...Coastal flooding expected with up to 2 to 3 feet of inundation. * WHERE...Portions of southeast and southern Mississippi and southeast Louisiana. * WHEN...Through 7 PM CDT Saturday. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide cycle, but this will mostly be a wind driven coastal flood event that should see water levels rise through Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. && $$ LAZ049-050-058-060-061-072-075-077-190630- /O.CON.KLIX.CF.Y.0009.000000T0000Z-210620T0000Z/ Ascension-Livingston-St. John The Baptist-St. Charles- Upper Jefferson-Southern Tangipahoa-Northwest St. Tammany- Western Orleans- 517 PM CDT Fri Jun 18 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SATURDAY... * WHAT...Minor coastal flooding expected with 1 to 2 feet of inundation. * WHERE...Ascension, Livingston, St. John The Baptist, St. Charles, Upper Jefferson, Southern Tangipahoa, Northwest St. Tammany and Western Orleans Parishes. * WHEN...Through 7 PM CDT Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide, but this will mostly be a wind driven coastal flood event that should see water levels rise quickly through Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
486 WHUS44 KLIX 190253 CFWLIX Coastal Hazard Message National Weather Service New Orleans LA 953 PM CDT Fri Jun 18 2021 LAZ064-066>070-076-078-MSZ080>082-191300- /O.CON.KLIX.CF.W.0002.000000T0000Z-210620T0000Z/ Upper St. Bernard-Lower Terrebonne-Lower Lafourche- Lower Jefferson-Lower Plaquemines-Lower St. Bernard- Southeast St. Tammany-Eastern Orleans-Hancock-Harrison-Jackson- 953 PM CDT Fri Jun 18 2021 ...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 7 PM CDT SATURDAY... * WHAT...Coastal flooding expected with up to 2 to 3 feet of inundation. * WHERE...Portions of southeast and southern Mississippi and southeast Louisiana. * WHEN...Through 7 PM CDT Saturday. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide cycle, but this will mostly be a wind driven coastal flood event that should see water levels rise through Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. && $$ LAZ049-050-058-060-061-072-075-077-191300- /O.CON.KLIX.CF.Y.0009.000000T0000Z-210620T0000Z/ Ascension-Livingston-St. John The Baptist-St. Charles- Upper Jefferson-Southern Tangipahoa-Northwest St. Tammany- Western Orleans- 953 PM CDT Fri Jun 18 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SATURDAY... * WHAT...Minor coastal flooding expected with 1 to 2 feet of inundation. * WHERE...Ascension, Livingston, St. John The Baptist, St. Charles, Upper Jefferson, Southern Tangipahoa, Northwest St. Tammany and Western Orleans Parishes. * WHEN...Through 7 PM CDT Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide, but this will mostly be a wind driven coastal flood event that should see water levels rise quickly through Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
141 WHUS44 KLIX 190911 CFWLIX Coastal Hazard Message National Weather Service New Orleans LA 411 AM CDT Sat Jun 19 2021 LAZ064-066>070-076-078-MSZ080>082-191715- /O.CON.KLIX.CF.W.0002.000000T0000Z-210620T0000Z/ Upper St. Bernard-Lower Terrebonne-Lower Lafourche- Lower Jefferson-Lower Plaquemines-Lower St. Bernard- Southeast St. Tammany-Eastern Orleans-Hancock-Harrison-Jackson- 411 AM CDT Sat Jun 19 2021 ...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Coastal flooding expected with up to 2 to 3 feet of inundation. * WHERE...Portions of southeast and southern Mississippi and southeast Louisiana. * WHEN...Through 7 PM CDT this evening. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide cycle, but this will mostly be a wind driven coastal flood event that should see water levels rise through this morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. && $$ LAZ049-050-058-060-061-072-075-077-191715- /O.CON.KLIX.CF.Y.0009.000000T0000Z-210620T0000Z/ Ascension-Livingston-St. John The Baptist-St. Charles- Upper Jefferson-Southern Tangipahoa-Northwest St. Tammany- Western Orleans- 411 AM CDT Sat Jun 19 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Minor coastal flooding expected with 1 to 2 feet of inundation. * WHERE...Ascension, Livingston, St. John The Baptist, St. Charles, Upper Jefferson, Southern Tangipahoa, Northwest St. Tammany and Western Orleans Parishes. * WHEN...Through 7 PM CDT this evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...A few areas will experience the highest water levels during high tide, but this will mostly be a wind driven coastal flood event that should see water levels rise quickly through this morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
652 WHUS44 KLIX 191618 CFWLIX Coastal Hazard Message National Weather Service New Orleans LA 1118 AM CDT Sat Jun 19 2021 LAZ066>068-200000- /O.CAN.KLIX.CF.W.0002.000000T0000Z-210620T0000Z/ /O.EXA.KLIX.CF.Y.0009.000000T0000Z-210620T0000Z/ Lower Terrebonne-Lower Lafourche-Lower Jefferson- 1118 AM CDT Sat Jun 19 2021 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...COASTAL FLOOD WARNING IS CANCELLED... * WHAT...Minor coastal flooding. * WHERE...Lower Terrebonne, Lower Lafourche and Lower Jefferson Parishes. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$ LAZ064-069-070-076-078-MSZ080>082-200000- /O.CON.KLIX.CF.W.0002.000000T0000Z-210620T0000Z/ Upper St. Bernard-Lower Plaquemines-Lower St. Bernard- Southeast St. Tammany-Eastern Orleans-Hancock-Harrison-Jackson- 1118 AM CDT Sat Jun 19 2021 ...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Coastal flooding expected with up to 2 to 3 feet of inundation. * WHERE...Portions of southeast and southern Mississippi and southeast Louisiana. * WHEN...Through 7 PM CDT this evening. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. && $$ LAZ049-050-058-060-061-072-075-077-200000- /O.CON.KLIX.CF.Y.0009.000000T0000Z-210620T0000Z/ Ascension-Livingston-St. John The Baptist-St. Charles- Upper Jefferson-Southern Tangipahoa-Northwest St. Tammany- Western Orleans- 1118 AM CDT Sat Jun 19 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Minor coastal flooding expected with 1 to 2 feet of inundation. * WHERE...Ascension, Livingston, St. John The Baptist, St. Charles, Upper Jefferson, Southern Tangipahoa, Northwest St. Tammany and Western Orleans Parishes. * WHEN...Through 7 PM CDT this evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
967 WHUS44 KLIX 191623 CFWLIX Coastal Hazard Message National Weather Service New Orleans LA 1123 AM CDT Sat Jun 19 2021 LAZ064-069-070-076-078-200000- /O.CAN.KLIX.CF.W.0002.000000T0000Z-210620T0000Z/ /O.EXA.KLIX.CF.Y.0009.000000T0000Z-210620T0000Z/ Upper St. Bernard-Lower Plaquemines-Lower St. Bernard- Southeast St. Tammany-Eastern Orleans- 1123 AM CDT Sat Jun 19 2021 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...COASTAL FLOOD WARNING IS CANCELLED... * WHAT...Minor coastal flooding. * WHERE...Upper St. Bernard, Lower Plaquemines, Lower St. Bernard, Southeast St. Tammany and Eastern Orleans Parishes. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$ MSZ080>082-200000- /O.CON.KLIX.CF.W.0002.000000T0000Z-210620T0000Z/ Hancock-Harrison-Jackson- 1123 AM CDT Sat Jun 19 2021 ...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Coastal flooding expected with up to 2 to 3 feet of inundation. * WHERE...Portions of southeast and southern Mississippi and southeast Louisiana. * WHEN...Through 7 PM CDT this evening. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. && $$ LAZ049-050-058-060-061-066>068-072-075-077-200000- /O.CON.KLIX.CF.Y.0009.000000T0000Z-210620T0000Z/ Ascension-Livingston-St. John The Baptist-St. Charles- Upper Jefferson-Lower Terrebonne-Lower Lafourche-Lower Jefferson- Southern Tangipahoa-Northwest St. Tammany-Western Orleans- 1123 AM CDT Sat Jun 19 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Minor coastal flooding. * WHERE...Lower Terrebonne, Lower Lafourche and Lower Jefferson Parishes. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
685 WHUS44 KLIX 191742 CFWLIX Coastal Hazard Message National Weather Service New Orleans LA 1242 PM CDT Sat Jun 19 2021 MSZ080>082-191845- /O.CAN.KLIX.CF.W.0002.000000T0000Z-210620T0000Z/ Hancock-Harrison-Jackson- 1242 PM CDT Sat Jun 19 2021 ...COASTAL FLOOD WARNING IS CANCELLED... Tides have dropped off quickly and are no longer providing any impacts. $$ LAZ049-061-064-066>070-191845- /O.CAN.KLIX.CF.Y.0009.000000T0000Z-210620T0000Z/ Ascension-Upper Jefferson-Upper St. Bernard-Lower Terrebonne- Lower Lafourche-Lower Jefferson-Lower Plaquemines- Lower St. Bernard- 1242 PM CDT Sat Jun 19 2021 ...COASTAL FLOOD ADVISORY IS CANCELLED... Tides continue to fall to near expected levels and are no longer providing any impacts. $$ LAZ050-058-060-072-075>078-200000- /O.CON.KLIX.CF.Y.0009.000000T0000Z-210620T0000Z/ Livingston-St. John The Baptist-St. Charles-Southern Tangipahoa- Northwest St. Tammany-Southeast St. Tammany-Western Orleans- Eastern Orleans- 1242 PM CDT Sat Jun 19 2021 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Minor coastal flooding for inundation of 1 to 2 feet. * WHERE...Lower Terrebonne, Lower Lafourche and Lower Jefferson Parishes. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Tides will take a little while to exit Lake Pontchartrain but should drop off enough this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
What forecasters said that day
The local office's own words before this coastal 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 coastal flood warning went out at Jun 17, 4:23 AM CDT, 9 hours 7 minutes earlier.
Area forecast discussion, Jun 17, 4:23 AM CDT, 9 hours 7 minutes before
Area Forecast Discussion National Weather Service New Orleans LA 423 AM CDT Thu Jun 17 2021 .SYNOPSIS... Surface boundary separating dew points in the 60s from much more humid air is currently over our coastal waters and is reasonably depicted on radar by a narrow band of showers and a few thunderstorms. Upper ridging still over the southern Rockies, with an upper trough over New England. Skies mostly clear across the area, with comfortable temperatures in the mid and upper 60s across most of the northern half of the area, and in the 70s for most of the southern areas. New Orleans metro remains a little warmer, as northeast winds are coming off Lake Pontchartrain water temperatures that are in the upper 80s. && .SHORT TERM (through Saturday night)... Eyes will be on the Bay of Campeche today, monitoring the area of disturbed weather in that area. Should start to see some northward movement by late in the day, and if something is going to organize, that should start happening overnight. Today will be rather quiet regarding precipitation, with any showers and storms remaining offshore. Dew points will remain in the 60s in most areas, making conditions fairly comfortable, considering it's mid-June. While NBM high temperature values today are a couple of degrees above operational guidance, somewhat concerned that those values may not even be warm enough, considering most of our CWA was in the mid 90s yesterday. We're in line with our neighbors right now, so will brief the day shift to keep an eye on it. As the Bay of Campeche disturbance begins moving northward tonight, so will the surface boundary, and moisture will rush back to the north. BUFR soundings for New Orleans show precipitable water values less than an inch this afternoon already back to 1.6 by Friday morning, and over 2 inches by midday Friday. Precipitation chances will increase during the day on Friday from south to north with likely to categorical PoPs by Friday evening. Main threat of heavy rain will occur overnight Friday night through Saturday. The area of most significant threat for heavy rain and severe weather will be displaced to the right of any circulation center. Still quite a bit of uncertainty on a track, but there are enough indications that some portions of our area will see very heavy rainfall over about a 36 hour period, potentially 5-10 inches with locally higher amounts. Precipitable water values expected to end up somewhere around 2.5 inches, which is at the upper end of climatology for late June, so those amounts are certainly achievable, even with a system like this. Right now, best estimates would be from about Interstate 55 eastward, but that definitely could shift one way or the other. As a track becomes better defined, Flash Flood Watches will likely be issued later today for portions of the area late Friday into Saturday. Isolated tornadoes could definitely be an issue with rainbands to the east of the low. NAM BUFR soundings showing 0-3KM helicities well over 400 east of the track. Onshore winds will push tide levels up as well. Fortunately, we're near neap tide ranges. Current indications are surge levels should be in the 1-2 foot range, but again, that'll be dependent on strength and track of the system. System should track northeast away from the area Saturday night with the heavy rain threat diminishing. Temperature guidance for Friday/Saturday looks reasonable considering precipitation trends. 35 && .LONG TERM (Sunday and beyond)... The primary concern for the first half of next week will be the passage of a northern stream longwave trough and associated frontal boundary next Tuesday into Wednesday. In advance of this feature, a largely zonal flow regime in the upper levels will combine with weak low to mid-level ridging to produce warmer and more diurnally induced convection for Sunday and Monday. Additionally, a lingering theta e axis and region of higher precipitable water values could keep rain chances a bit more elevated than expected for the overlying upper level pattern on Sunday. Starting with Sunday, the low pressure system impacting the area late this week will be quickly departing to the east and northeast with the primary forcing and rain impacts advecting into the Mid- Atlantic states. However, an axis of higher precipitable water values is expected to trail behind this low pressure system and stretch in a southwest oriented fashion back into the Gulf of Mexico on Sunday. Precipitable water values will be lower than observed on Saturday, but should still remain fairly elevated in the 1.75 to 2 inch range through Sunday evening. Although upper level support will be trending downward, there should be enough residual omega in place to support scattered to numerous showers and thunderstorms through the day, and the threat of some locally heavy downpours and street flooding issues will persist. Temperatures will be near to slightly below normal given the expected amount of shower and thunderstorm in place through the day. By Sunday night, conditions will begin to improve as instability decreases and some weak negative vorticity advection develops aloft. By Monday, a more typical Summer pattern of diurnally induced convection is expected to take hold. The flow pattern aloft will be zonal in nature, and a deep layer southwest flow pattern will be in place in the low to mid-levels. The one caveat is that precipitable water values will remain elevated as an axis of deeper moisture remains over the region with readings of around 2 inches expected. This moisture will tap into a fairly unstable airmass to produce scattered showers and thunderstorms throughout much of the day, and once again some locally heavy downpours and isolated street flooding events will be the primary concern. The threat of stronger storms will increase on Tuesday and Wednesday as a northern stream trough axis and an associated surface front push through the area. A band of convection could accompany the front on Tuesday, and have higher POP in the likely range of around 60 percent to reflect this risk. Temperatures are also forecast to be a few degrees cooler than average due to the expected increase in cloud cover and thunderstorm activity. After reviewing model soundings, the profile looks favorable for a few wind events to potentially occur, and this is supported by DCAPE values in excess of 1000 J/KG both Tuesday and Wednesday afternoons. This pattern and the potential for a few strong to possibly severe thunderstorms will need to monitored over the weekend. PG && .AVIATION... VFR conditions will persist at all of the terminals this morning. Winds will generally be from the east and northeast through the morning hours, and a shift to the southeast is expected during the afternoon hours. Overall, no significant impacts to aviation are expected through 12z Friday, but will expect deteriorating conditions 12z-18z Friday for at least the southern terminals. && .MARINE... Seeing borderline Small Craft Exercise Caution conditions early this morning in some of the waters, but those winds are on a downward trend and won't carry the headlines. Conditions are expected to deteriorate late tonight, with Small Craft Advisories likely to be necessary Friday through Sunday if we don't end up with tropical headlines. && .PRELIMINARY POINT TEMPS/POPS... MCB 91 68 87 72 / 0 0 50 50 BTR 91 71 87 74 / 0 0 70 60 ASD 92 73 86 75 / 0 10 80 70 MSY 93 78 87 77 / 0 20 80 80 GPT 91 75 85 76 / 0 20 80 70 PQL 91 73 85 74 / 0 20 70 70 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...None. GM...None. MS...None. GM...None. &&
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 9:45 AM CDT | River Flood Warning | LIX | Saint Tammany | 58 hr |
| Jun 17, 1:30 PM CDT | Coastal Flood Advisory | LIX | Orleans, Saint Bernard, Saint John the Baptist, Saint Tammany | 54 hr |
| Jun 17, 1:36 PM CDT | Flash Flood Watch | LIX | Assumption, East Baton Rouge, East Feliciana, Iberville, Orleans, Pointe Coupee and 9 more | 47 hr |
| Jun 17, 4:02 PM CDT | Tropical Storm Warning | LIX | Assumption, Orleans, Saint Bernard, Saint James, Saint John the Baptist, Saint Tammany | 48 hr |
Nearby
Coastal Flood Warnings in Louisiana, 2021Coastal Flood Warnings in Mississippi, 2021Every coastal 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.