Texas Power Outage Season
When outages happen most in Texas, and what to expect.
May is historically Texas's busiest month for recorded power outages, part of a summer season (June–August) that accounts for about 29% of all recorded outages statewide, averaging 3.2 hours per event. 62 of Texas's 254 tracked counties currently carry a Reliability Grade of F.
Texas is also the only state that runs its own electric grid, operated by ERCOT, largely isolated from the Eastern and Western Interconnections that serve the rest of the country. That isolation limits how much emergency power Texas can import from neighboring states during extreme demand, which is part of why events like the February 2021 winter storm produced outages lasting days rather than hours.
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Texas outages by month
Total recorded events and average duration per event, summed across every tracked county in Texas.
Peak season insight
Texas's outage season runs June–August, accounting for 29% of all recorded outages. May has the highest frequency.
Month-by-month data table
| Month | Events | Avg duration |
|---|---|---|
| January | 16,813 | 3.0 hrs |
| February | 14,611 | 5.3 hrs |
| March | 18,256 | 3.3 hrs |
| April | 21,385 | 3.4 hrs |
| May | 27,705 | 3.5 hrs |
| June | 25,311 | 3.4 hrs |
| July | 23,327 | 2.8 hrs |
| August | 21,643 | 2.7 hrs |
| September | 17,906 | 2.7 hrs |
| October | 18,250 | 3.5 hrs |
| November | 17,147 | 2.6 hrs |
| December | 16,031 | 2.6 hrs |
This month in Texas
October has historically recorded 18,250 outage events across Texas, below the state's typical monthly average. Outages that start in October have averaged 3.5 hours.
Main causes by season
Named storms behind Texas's worst recorded outages, from the NOAA Storm Events Database.
Winter (December–February)
- Winter Storm Uri
- High Wind
- Winter Weather
- Drought
- Heavy Snow
Spring (March–May)
- High Wind
- Thunderstorm Wind
- Winter Storm
- Hail
- Tornado
Summer (June–August)
- Drought
- Thunderstorm Wind
- Excessive Heat
- Heat
- Flash Flood
Fall (September–November)
- High Wind
- Drought
- Hail
- Heavy Snow
- Thunderstorm Wind
Texas's worst outage events on record
The five largest outages in Texas by duration and customers affected.
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 8, 2024 | 258 hrs | 1,660,703 (91%) | Unnamed event |
| May 28, 2024 | 211 hrs | 386,856 (34%) | Hail |
| Jul 8, 2024 | 255 hrs | 246,212 (70%) | Unnamed event |
| Jul 8, 2024 | 258 hrs | 164,845 (46%) | Unnamed event |
| Jul 8, 2024 | 253 hrs | 164,920 (79%) | Unnamed event |
Highest-risk counties in Texas
Lowest reliability percentile among Texas's tracked counties.
| County | Grade | National percentile |
|---|---|---|
| Trinity County | F | 2nd |
| Orange County | F | 2nd |
| Marion County | F | 4th |
| Terrell County | F | 4th |
| Gregg County | F | 4th |
Live weather alerts for Texas
Flood Warning
Flood Warning issued October 1 at 8:53AM CDT until October 3 at 3:00AM CDT by NWS Austin/San Antonio TX
Read the official NWS alert →Flood Warning
Flood Warning issued October 1 at 8:53AM CDT until October 3 at 12:00AM CDT by NWS Austin/San Antonio TX
Read the official NWS alert →Flood Warning
Flood Warning issued October 1 at 8:53AM CDT until October 2 at 7:00PM CDT by NWS Austin/San Antonio TX
Read the official NWS alert →Flood Advisory
Flood Advisory issued October 1 at 8:48AM CDT until October 1 at 11:45AM CDT by NWS San Angelo TX
Read the official NWS alert →Flash Flood Warning
Flash Flood Warning issued October 1 at 8:43AM CDT until October 1 at 10:30AM CDT by NWS Fort Worth TX
Read the official NWS alert →These live alerts come from the National Weather Service. They are public-safety information, not an outage prediction.
Texas power outage FAQ
When do power outages happen most in Texas?
May is historically the busiest single month for recorded outages in Texas, and Summer (June–August) accounts for about 29% of all recorded outages across the state.
How long do power outages in Texas typically last?
Across Texas's tracked counties, the average recorded outage lasts about 3.2 hours, though individual events -- especially named storms -- can run much longer.
Which counties in Texas have the highest outage risk?
Trinity County, Orange County, Marion County, Terrell County, Gregg County currently rank lowest for reliability in Texas. See each county's page for its full history.
Does this page predict a power outage in Texas?
No. It describes patterns in recorded county-level outage history, not a guaranteed future event. Check the live National Weather Service alerts below for current conditions.
Prepare for Texas's outage season
Sized for Texas's recorded outage frequency and duration. See the full Texas storm prep checklist.
