


Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
038 ACUS02 KWNS 140547 SWODY2 SPC AC 140546 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1246 AM CDT Tue Oct 14 2025 Valid 151200Z - 161200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE SOUTHERN ROCKIES AND CENTRAL HIGH PLAINS... ...SUMMARY... Isolated severe storms are possible on Wednesday across parts of the southern Rockies, and over the central High Plains Wednesday evening into the overnight. Hail will be the primary threat, but a few marginally severe wind gusts may also occur. ...Central and Northern Plains... On Wednesday at mid-levels, a ridge will move slowly eastward across the central U.S., as a low moves east-northeastward across the Intermountain West. Between these two features, strong southwesterly flow will be in place, as a jet streak moves northeastward across the Four Corners region. At the surface, a low will deepen across northeastern Colorado, as a warm front advances northward across the central High Plains. Along the front, surface dewpoints from 55 to 60 F will contribute to destabilization in the late afternoon and early evening. A pocket of MLCAPE in the 1000 to 1200 J/kg range is forecast across much of western Nebraska and far southwest South Dakota. As the exit region of the mid-level jet moves across the central High Plains during the evening, large-scale ascent and deep-layer shear will support scattered strong thunderstorm development. A marginal severe threat appears likely with hail and a few severe wind gusts possible. The threat could persist into the overnight period across parts of western and central South Dakota. ...Southern Rockies... A mid-level low will move east-northeastward across the Intermountain West on Wednesday, as an associated 60 to 80 knot jet streak translates northeastward through the Desert Southwest. Ahead of the jet, an axis of instability is forecast to develop by afternoon from west-central New Mexico into far southern Colorado. As the core of the jet streak passes through the Four Corners region during the late afternoon and early evening, large-scale ascent will aid the development of isolated to scattered thunderstorms along and near the instability axis. The instability along with moderate deep-layer shear associated with the jet streak will likely support a marginal severe threat during the late afternoon and evening. Hail and isolated severe wind gusts will be the primary threats. ..Broyles.. 10/14/2025 $$