Live · updated 1 min ago

St. John the Baptist Parish weather alerts

No active National Weather Service alerts for St. John the Baptist Parish, Louisiana right now. The most recent was a Wind Advisory that ended Oct 17, 3:00 PM.

27 in the last 30 days 38 in 12 months (since Aug 30) most common: Dense Fog Advisory Get alerts on your phone →

Active alerts for St. John the Baptist Parish

Refreshed every few minutes; times in CDT.

All clear in St. John the Baptist Parish

No warnings, watches or advisories are in effect. See what is active across the country, or check a neighbouring parish below.

Get St. John the Baptist Parish alerts on your phone before you think to look them up

Forecast Bar watches the official alert feeds around the clock, NWS in the United States and Environment Canada in Canada, and pushes every warning, watch and advisory for your saved locations the moment it is issued. This page is the same data, a few minutes later.

  • Push notifications for severe weather, with Critical Alerts that break through Focus modes
  • Storm Tracker and Live Activities that follow a storm cell on your Lock Screen
  • Radar with warnings drawn on the map, on iPhone, iPad, Apple Watch, Mac and Apple TV
  • Rain alerts, air quality, tides, aurora and custom thresholds you set yourself
Download on theApp Store On Mac, included withSetapp
Forecast Bar severe weather alert notifications on an iPhone Lock Screen

Where

St. John the Baptist Parish on the map

Alert polygons are NWS's own. Forecast Bar's radar shows the same warnings over live precipitation, with future radar and lightning. See the radar.

Last 30 days

Recent alerts for St. John the Baptist Parish

AlertIssuedEndedIssued by
Wind Advisory Oct 17, 2:52 PM Oct 17, 3:00 PM New Orleans LA
Wind Advisory Oct 17, 3:29 AM Oct 17, 3:00 PM New Orleans LA
Wind Advisory Oct 16, 12:51 PM Oct 17, 3:00 PM New Orleans LA
Wind Advisory Oct 16, 12:05 AM Oct 17, 3:00 PM New Orleans LA
Dense Fog Advisory Oct 15, 7:53 AM Oct 15, 11:00 AM New Orleans LA
Dense Fog Advisory Oct 15, 12:54 AM Oct 15, 11:00 AM New Orleans LA
Dense Fog Advisory Oct 14, 7:33 PM Oct 15, 11:00 AM New Orleans LA
Dense Fog Advisory Oct 14, 9:57 AM Oct 14, 11:00 AM New Orleans LA
Dense Fog Advisory Oct 14, 9:26 AM Oct 14, 10:00 AM New Orleans LA
Dense Fog Advisory Oct 14, 9:16 AM Oct 14, 10:00 AM New Orleans LA
Dense Fog Advisory Oct 14, 1:54 AM Oct 14, 10:00 AM New Orleans LA
Dense Fog Advisory Oct 13, 6:33 PM Oct 14, 10:00 AM New Orleans LA
Dense Fog Advisory Oct 13, 8:55 AM Oct 13, 10:00 AM New Orleans LA
Dense Fog Advisory Oct 13, 3:36 AM Oct 13, 9:00 AM New Orleans LA
Coastal Flood Advisory Oct 9, 10:09 PM Oct 10, 7:00 PM New Orleans LA
Coastal Flood Advisory Oct 9, 4:03 PM Oct 10, 7:00 PM New Orleans LA
Coastal Flood Advisory Oct 9, 10:05 AM Oct 10, 7:00 PM New Orleans LA
Coastal Flood Advisory Oct 9, 4:30 AM Oct 10, 7:00 PM New Orleans LA
Coastal Flood Advisory Oct 8, 10:03 PM Oct 10, 7:00 PM New Orleans LA
Coastal Flood Advisory Oct 8, 4:16 PM Oct 10, 7:00 PM New Orleans LA
Coastal Flood Advisory Oct 8, 10:05 AM Oct 10, 7:00 PM New Orleans LA
Coastal Flood Advisory Oct 7, 10:42 PM Oct 10, 7:00 PM New Orleans LA
Flood Watch Oct 4, 11:45 PM Oct 5, 12:00 AM New Orleans LA
Flood Watch Oct 4, 3:05 PM Oct 5, 12:00 AM New Orleans LA
Flood Advisory Oct 4, 12:19 PM Oct 4, 3:15 PM New Orleans LA
Flood Watch Oct 4, 12:46 AM Oct 5, 12:00 AM New Orleans LA
Flood Watch Oct 3, 4:40 PM Oct 5, 12:00 AM New Orleans LA

Pattern

What St. John the Baptist Parish gets alerted for

Every alert that named St. John the Baptist Parish in the last 12 months, by type. Records begin August 30, 2026, so this fills in over the year.

Dense Fog Advisory
10
Coastal Flood Advisory
8
Special Weather Statement
5
Flood Watch
4
Heat Advisory
4
Wind Advisory
4
Flood Advisory
2
Severe Thunderstorm Warning
1

Plain English

What these alerts mean

A warning means the hazard is happening or about to; a watch means conditions favour it; an advisory is a lesser hazard still worth planning around.

Wind Advisory

Sustained winds of 30 mph or more, or gusts to 45 mph, are expected. Use caution driving high-profile vehicles.

Dense Fog Advisory

Visibility of a quarter mile or less is expected. Slow down and use low beams.

Coastal Flood Advisory

Minor coastal flooding is expected, usually around high tide. Expect water on low-lying roads near the shore.

Flood Watch

Conditions are favourable for flooding. Have a plan in case a warning is issued.

Flood Advisory

Minor flooding of streets, streams or low-lying areas is expected. Expect ponding on roads and use caution when driving.

Special Weather Statement

A heads-up about conditions that do not meet warning or advisory criteria but still deserve attention, such as a strong storm, patchy fog or a brief burst of snow.

Heat Advisory

Heat index values high enough to cause heat illness with prolonged exposure. Drink water, stay in air conditioning and check on neighbours.

Severe Thunderstorm Warning

A storm with hail of 1 inch or larger, winds of 58 mph or more, or both, is occurring or imminent. Move indoors and away from windows.

Nearby

Alerts near St. John the Baptist Parish

Neighbouring parishes in Louisiana

St. Charles Parish St. James Parish Livingston Parish Ascension Parish Jefferson Parish Tangipahoa Parish Orleans Parish Lafourche Parish All of Louisiana →

Questions

About St. John the Baptist Parish alerts

How do I get St. John the Baptist Parish weather alerts on my iPhone?

Install Forecast Bar, add St. John the Baptist Parish as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for St. John the Baptist Parish then arrives as a push notification at the moment of issue, with Critical Alerts available for the most dangerous warnings. Forecast Bar also runs on iPad, Apple Watch, Mac and Apple TV.

Where do these alerts come from?

From the National Weather Service alert feed (api.weather.gov). NWS issues alerts by county and by forecast zone; this page lists every product that names St. John the Baptist Parish. Forecast Bar checks the feed continuously and this page refreshes within a few minutes of a change.

What is the difference between a watch, a warning and an advisory?

A warning means the hazard is occurring, imminent or very likely: act now. A watch means conditions are favourable for it to develop: prepare and stay informed. An advisory covers a hazard that is less serious than a warning but can still cause real inconvenience or danger if you are not ready for it.

Can I get this data as JSON?

Yes. /weather-alerts/la/st-john-the-baptist-parish.json returns the active alerts, the last 30 days and the 12-month counts for St. John the Baptist Parish, refreshed every minute. Please cache responses and credit National Weather Service as the source.

Forecast Bar app icon

Never find out about a St. John the Baptist Parish alert from this page again

Add St. John the Baptist Parish in Forecast Bar and every NWS warning, watch and advisory arrives as a push notification the moment it is issued, on iPhone, iPad, Apple Watch, Mac and Apple TV.

Download on theApp Store For Mac, included withSetapp

Free to download; live weather requires a subscription. On iPhone and iPad, every subscription includes a 7-day free trial for new subscribers; Mac plans do not. Mac and iOS plans are separate; Apple TV is included with Forecast Bar Gold on iOS.