TL;DR

The NOAA Storm Prediction Center (SPC) has issued a Slight Risk for severe thunderstorms across parts of New Mexico and the southern High Plains for Sunday evening into overnight. An organized convective line is expected to develop this afternoon and move quickly east-northeastward across central and eastern New Mexico, reaching the Texas Panhandle early Monday morning. The primary threats are wind gusts potentially exceeding 70 mph and isolated tornadoes, with the tornado risk increasing overnight as low-level wind profiles become more favorable across the southern High Plains.

Where is the highest risk today?

The Slight Risk area covers much of New Mexico and extends northeastward into the southern High Plains, including the Texas Panhandle. According to the SPC Day 1 outlook, the greatest potential for strong wind gusts appears over east-central New Mexico, where isolated gusts over 70 mph are possible.

Cities in or near the Slight Risk area include:

  • Albuquerque, New Mexico
  • Roswell, New Mexico
  • Clovis, New Mexico
  • Amarillo, Texas
  • Lubbock, Texas

A more isolated severe threat will also be possible across parts of the Desert Southwest this afternoon, including south-central and southeast Arizona.

What's driving today's severe weather?

A shortwave trough currently positioned near the California/Arizona border will move quickly northeastward today, reaching the Arizona/New Mexico border by this evening and central Kansas by 12Z Monday. Strong southwesterly flow aloft will accompany this wave, spreading across the Four Corners states and southern High Plains.

Ahead of the wave, dewpoints are forecast to increase into the low 60s across eastern New Mexico—providing the moisture needed for thunderstorm development. The combination of strong large-scale lift from the shortwave and increasing low-level moisture will support scattered to numerous thunderstorms beginning over southern Nevada and the Lower Colorado River Valley before spreading eastward across the Southwest and southern High Plains.

While widespread cloud cover will limit heating and keep instability modest, the strong vertical shear—55 to 65 knots from the surface to 20,000 feet—will be more than sufficient to organize storms into a potentially damaging convective line.

When will the storms hit?

Afternoon (Desert Southwest): Isolated severe thunderstorms are possible across south-central and southeast Arizona during the afternoon hours. Strong wind gusts will be the primary threat, though a more cellular storm mode could support an isolated tornado risk as well.

Evening into overnight (New Mexico and Texas Panhandle): Thunderstorms are expected to develop across central and eastern New Mexico during the afternoon, with quick development of an organized convective line anticipated as the shortwave trough moves through. This line will move east-northeastward across the region this evening and overnight, reaching the Texas Panhandle early Monday morning.

The peak severe threat window for New Mexico is roughly 6:00 PM to midnight MST, with the threat shifting into the Texas Panhandle from midnight to 2:00 AM CST Monday.

What are the specific threats?

Damaging wind gusts

Strong wind gusts are the primary concern with today's setup. The SPC notes that isolated gusts over 70 mph are possible, particularly across east-central New Mexico where the convective line will interact with greater low-level moisture. The linear storm mode and strong forward speed of the system will favor widespread damaging winds along and behind the leading edge of the line.

Tornado risk

While the linear storm mode may limit tornado potential compared to discrete supercells, the SPC emphasizes that the "anomalously moist and strongly sheared environment still appears supportive of a seasonally rare overnight tornado risk across the southern High Plains."

Low to mid-level flow is forecast to strengthen across the region this evening and overnight, with low-level wind profiles becoming supportive of line-embedded tornadoes. The tornado threat will be highest late tonight into the early morning hours of Monday as the line moves into the Texas Panhandle.

This overnight timing is particularly concerning. Nocturnal tornadoes are more dangerous than daytime tornadoes because people are asleep and less likely to receive warnings in time to take shelter.

Overnight tornado safety

If you live in the Slight Risk area—particularly across the Texas Panhandle—take steps now to ensure you can receive warnings overnight:

  • Charge your phone and keep it within arm's reach of your bed
  • Enable Wireless Emergency Alerts (WEA) for tornado warnings, which bypass Do Not Disturb on most phones
  • Have multiple ways to receive warnings: NOAA Weather Radio, a weather app with alert capabilities, or a phone call system

Third-party weather apps are silenced by Do Not Disturb, though Wireless Emergency Alerts for tornado warnings still break through on most phones. If you want an additional layer of protection, VORTEX Pro can place a phone call when a tornado warning is issued for your location—calls can ring through Do Not Disturb once you enable Emergency Bypass for the number.

Know where you'll shelter if a warning is issued: an interior room on the lowest floor, away from windows. A bathroom, closet, or hallway is ideal. If you're in a mobile home, identify a sturdier structure nearby where you can take shelter quickly.

What about Monday?

The SPC Day 2 outlook maintains a Slight Risk for parts of Oklahoma, Texas, and Kansas on Monday as the system continues eastward. Additional severe weather is possible across the southern and central Plains, though details will become clearer as the shortwave trough moves through the region tonight.

Check back for updates as the situation evolves.

Sources

The information in this post is based on the NOAA Storm Prediction Center Day 1 Convective Outlook. Outlooks are updated multiple times daily as conditions evolve, so check spc.noaa.gov for the latest forecast.

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.