– 0% of Tangipahoa out 0 customers out in Louisiana

Power outage history

Tangipahoa Parish Louisiana

52hours

without power for the average customer in a typical year, 2018–2025

10th most of 63 in Louisiana 8.0× the national median

Worst outage on record Hurricane Ida · Aug 30, 2021 100% of customers out · 90% back in 7.9 days

Hours without power, average customer per year 52h / yr State average 27 h · national median 6.6 h

Major outages a year 6.4 Peaks over 10% of customers or 50,000 customers

Typical time to restore 90% 3hours Median across major outages, from the peak

Longest single outage 22.9days Hurricane Ida, over 1% of customers out

Outage hours on storm days 85% Share falling on days with a NOAA storm report here

Worst year 2021 12.5 days without power, average customer

Electricity customers 54,543 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Tangipahoa's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025

0%100% of customers out

Year by year

Hours in the dark, per customer

2021 was the worst well-recorded year, at 12.5 days for the average customer. Hatched years have a thin record and are left out of the averages.

Tangipahoa, hours without power per customer

TangipahoaUS median countyLouisiana average

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began	Storm	Peak out	Share	Lasted	90% restored	Customer-hours
Aug 29, 2021	Hurricane Ida	54,543	100%	22.9 d	7.9 d	15M
Dec 8, 2017	Winter storm	34,037	62%	2.8 d	2.2 d	1.2M
Sep 11, 2024	Hurricane Francine	22,600	41%	3.0 d	2.1 d	647k
Oct 26, 2019	Tropical Storm Olga	28,202	52%	4.4 d	13 h	539k
Feb 15, 2021	No storm report	13,390	25%	3.5 d	30 h	313k
Oct 9, 2020	Hurricane Delta	15,584	29%	44 h	12 h	217k
May 16, 2024	No storm report	19,979	37%	42 h	17 h	197k
Aug 12, 2016	Flooding	6,403	12%	3.0 d	27 h	166k
Apr 27, 2015	No storm report	14,315	26%	2.1 d	30 h	161k
Jul 11, 2019	No storm report	13,519	25%	13 h	9.2 h	134k
Feb 3, 2020	No storm report	5,517	10%	29 h	28 h	126k
Apr 28, 2020	Thunderstorms	15,589	29%	27 h	18 h	125k
Jun 4, 2024	Tornadoes	8,886	16%	31 h	24 h	103k
Mar 15, 2024	No storm report	9,984	18%	31 h	20 h	73k
Dec 22, 2022	No storm report	15,488	28%	25 h	1.5 h	73k
Mar 12, 2016	Flooding	6,457	12%	43 h	37 h	69k
Jul 30, 2015	Thunderstorms	9,096	17%	24 h	15 h	67k
Nov 1, 2018	Tornadoes	6,786	12%	19 h	12 h	63k
Apr 10, 2024	Flooding	5,705	10%	31 h	30 h	63k
May 11, 2019	No storm report	15,232	28%	15 h	1.5 h	53k
Mar 17, 2016	Thunderstorms	6,887	13%	24 h	18 h	44k
Oct 28, 2020	Hurricane Zeta	4,275	8%	17 h	13 h	44k
Jun 28, 2019	No storm report	8,913	16%	20 h	18 h	41k
May 13, 2017	Thunderstorms	6,704	12%	7.2 h	4.5 h	39k
Jun 19, 2023	No storm report	6,578	12%	20 h	16 h	33k
Feb 23, 2016	No storm report	6,423	12%	13 h	2.2 h	31k
Jan 17, 2018	Winter storm	6,500	12%	8.8 h	6.2 h	30k
May 26, 2015	Thunderstorms	5,656	10%	14 h	11 h	30k
Oct 11, 2023	No storm report	6,503	12%	13 h	8.8 h	30k
Dec 6, 2021	No storm report	7,795	14%	6.8 h	3.5 h	30k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Tangipahoa from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

Tropical storm 81%
No storm on record 15%
Thunderstorms 1.8%
Tornadoes 1.0%

Who keeps the lights on

Utilities serving Tangipahoa

As each utility reports to the Energy Information Administration for its whole Louisiana territory, not this county alone. Outage minutes include major storm days.

Utility	Type	Outage min / yr	Excl. major storms	Outages / yr	Residential ¢/kWh	Customers
Entergy Louisiana LLC	Investor Owned	253	218	1.83	11.9	962k
Dixie Electric Membership Corp	Cooperative	321	275	4.62	13.5	111k
Washington-St Tammany E C, Inc	Cooperative	511	484	5.20	11.0	51k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

St. Helena 83 h
St. John the Baptist 52 h
Tangipahoa (this county) 52 h
Amite, MS 42 h
Livingston 39 h
Washington 23 h
Pike, MS 18 h
St. Tammany 18 h

Across Louisiana

Where it is darkest

Hours / yr64+

All Louisiana counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 54,543 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →