


Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
782 ACUS02 KWNS 031649 SWODY2 SPC AC 031648 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1148 AM CDT Sun Aug 03 2025 Valid 041200Z - 051200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ON MONDAY ACROSS PORTIONS OF THE NORTHERN ROCKIES INTO THE NORTHERN AND CENTRAL HIGH PLAINS... ...SUMMARY... Isolated thunderstorms with severe gusts and hail will be possible on Monday from parts of the northern Rockies into the Dakotas and central High Plains. ...MT... Water vapor imagery shows a shortwave trough currently approaching the OR/CA coast. This feature will track northeastward and begin affecting parts of ID/MT by Monday afternoon. Steep low and mid level lapse rates will result in sufficient CAPE for scattered thunderstorm development over the mountains of central ID and western MT by mid-afternoon. These storms will become more numerous and spread into central and eventually eastern MT through the evening. Favorably strong westerly winds aloft will promote a risk of a few organized/rotating storms capable of damaging winds and hail. Cloud cover and the extent of afternoon destabilization over central MT lends sufficient uncertainty to maintain only MRGL risk at this time. ...High Plains... The upper ridge will remain centered roughly over the central Rockies, with widely scattered afternoon thunderstorms expected to form near/east of the ridge axis from the Black Hills region southward to the OK/TX Panhandles. Any of one of these high-based storm clusters could produce locally damaging wind gusts or hail, but limited/uncertain coverage precludes an upgrade to SLGT for any part of this corridor at this time. ..Hart.. 08/03/2025 $$