SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 0100 AM CST Tue Dec 23 2025 Valid 241200Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ALONG PARTS OF THE CALIFORNIA COAST AND INLAND IN THE SAN JOAQUIN VALLEY... ...SUMMARY... Thunderstorms with marginally severe wind gusts, hail and potentially a brief tornado will be possible from Wednesday into Wednesday night along parts of the California coast, and inland across the San Jouquin Valley. ...California... A ridge aloft will move eastward across the central U.S. on Wednesday, as a mid-level trough moves eastward across the eastern Pacific. Ahead of this large-scale feature, a subtle shortwave trough will approach the California coast Wednesday afternoon. As heights gradually fall, large-scale ascent and mid-level moisture will overspread most of California during the day. Thunderstorm development will be possible along the central and southern California coast, and inland across the San Joaquin Valley. The greatest chance for severe storms will be as the left exit region of a 90 to 100 knot mid-level jet moves across the San Joaquin Valley during the mid to late afternoon. Near this feature, very strong deep-layer shear will exist and MUCAPE is expected to peak in the 500 to 750 J/kg range. This should be enough for a few semi-organized storms with a threat for hail and marginally severe gusts. A brief tornado will also be possible. An isolated severe threat is expected to continue into the overnight period, and may shift southward along the coast into southern California, as a second minor impulse approaches and moves inland. ..Broyles.. 12/23/2025
