


Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
716 ACUS03 KWNS 030726 SWODY3 SPC AC 030725 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0225 AM CDT Sun Aug 03 2025 Valid 051200Z - 061200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE CENTRAL AND NORTHERN PLAINS... ...SUMMARY... Thunderstorms associated with a threat for isolated severe gusts and hail will be possible across parts of the central and northern Plains on Tuesday. ...Central and Northern Plains... At mid-levels, a ridge is forecast to remain over the central Rockies on Tuesday, as a shortwave trough moves through the northern High Plains. At the surface, a moist airmass will be in place across much of the north-central U.S., where dewpoints are forecast to be mostly in the 60s F. Along the western edge of this moist airmass, an axis of moderate instability is forecast to develop by afternoon from western Kansas northward into the western Dakotas. Scattered thunderstorm are expected to form ahead of the trough across the northern Plains, with more isolated development occurring southward into the central High Plains. NAM forecast soundings by late afternoon near the instability axis from western Nebraska into western South Dakota have 0-6 km shear in the 30 to 35 knot range, with 700-500 mb lapse rates near 8.5 C/km. In addition, surface temperature-dewpoint spreads are forecast to be near 30 degrees F. This thermodynamic environment will likely result in high-based cells with potential for severe gusts. Hail will also be possible, mainly with cells that form near areas with the strongest instability. ..Broyles.. 08/03/2025 $$