TL;DR
The NOAA Storm Prediction Center (SPC) has issued a Slight Risk for severe thunderstorms across southern New Mexico and far west Texas today. Scattered storms are expected mainly after 1pm CDT, with large hail and damaging winds the primary threats. An isolated tornado is also possible if storms remain discrete. The main severe weather window runs through midnight, with activity weakening as temperatures cool overnight.
What's driving today's setup?
An upper-level low positioned over southwest Arizona this morning is steering a pronounced shortwave trough northeastward across the Southwest. Morning water vapor imagery shows this feature rotating through northern Mexico, and it will lift into southern New Mexico and the Trans Pecos region of Texas through the afternoon and evening.
The combination of this upper-level support, daytime heating into the 80s across southern portions of the risk area, and strengthening southeasterly low-level winds will create an environment favorable for supercell thunderstorms. Forecast hodographs—vertical wind profiles—indicate sufficient low-level shear for rotating storms, which raises the possibility of a tornado or two if storms can maintain discrete structure rather than merging into a disorganized line.
Farther north across central and northern New Mexico, cooler air aloft and pockets of heating may support a few strong storms capable of hail, though this activity will spread into a less favorable environment by early evening.
Where is the highest risk today?
The Slight Risk area covers southern New Mexico and far west Texas, including the Trans Pecos region. Cities in or near the risk zone include:
- El Paso, Texas
- Las Cruces, New Mexico
- Alamogordo, New Mexico
- Carlsbad, New Mexico
Central and northern New Mexico, including the Albuquerque metro, may see scattered thunderstorms through the day, but the severe threat there is lower and will diminish by early evening as storms move into less favorable atmospheric conditions.
When will storms develop?
According to the SPC Day 1 outlook, scattered thunderstorm development is expected mainly after 18Z (1pm CDT) across the southern portions of the risk area. This timing aligns with peak daytime heating, when surface temperatures are forecast to climb into the 80s.
The main severe weather window runs from early afternoon through around 01Z (8pm CDT), when nocturnal cooling begins to weaken the threat. Storms that develop earlier in central New Mexico may persist into the evening but will encounter a progressively less favorable air mass as they move northeast.
What hazards should you prepare for?
Large hail and damaging winds are the primary threats today. The SPC outlook notes that supercell storm structures are likely, which are efficient hail producers. Hail reports from yesterday evening in the same general region included ping pong to golf ball-sized stones in Florida and quarter-sized hail near Fort Bliss, Texas—a preview of what today's environment may support.
An isolated tornado is also possible, particularly if discrete supercells can be maintained. The forecast environment includes favorable deep-layer shear and sufficient low-level shear for rotating updrafts. While tornado probability remains low, the possibility is not zero, and residents in the Slight Risk area should have multiple ways to receive warnings this afternoon and evening.
What does a Slight Risk mean?
A Slight Risk is the second level on the SPC's five-tier scale (Marginal, Slight, Enhanced, Moderate, High). It indicates that scattered severe storms are expected, and a few may produce significant severe weather. Not everyone in the risk area will see storms, but those who do should be prepared for rapidly changing conditions.
For context, Slight Risk days account for a meaningful portion of severe weather events nationwide, and they occasionally produce tornadoes—particularly in environments like today's, where shear profiles support supercells.
Looking ahead: Sunday and beyond
SPC Day 2 outlook shows a Marginal Risk continuing across portions of Texas and New Mexico on Sunday, October 25, as the upper low continues to meander across the region. Additional Marginal Risk areas extend into the Central Plains and Northeast, though details on those threats remain uncertain this far out.
Day 3 (Monday, October 26) currently shows no categorical severe weather risk, though the Central Plains and Northeast may see isolated storm activity.
If you're in southern New Mexico or far west Texas today, now is the time to review your severe weather plan. Know where you'll shelter if a warning is issued—ideally an interior room on the lowest floor of a sturdy building, away from windows. Charge your phone, and ensure you have multiple ways to receive warnings, especially if storms arrive during the evening hours when visibility is reduced.
VORTEX is a free web app at vortexintel.app that monitors severe weather nationwide. Pro ($4.99/month) places phone calls to your phone when a tornado or flash flood warning is issued for a location you care about — calls can ring through Do Not Disturb once you enable Emergency Bypass for the number, unlike most third-party app notifications.