SPC Mar 14, 2018 0600 UTC Day 1 Convective Outlook

By Newsroom America Feeds at 14 Mar 01:19

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1216 AM CDT Wed Mar 14 2018 Valid 141200Z - 151200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF EASTERN NV...MUCH OF UT...AND SOUTHWEST WY... ...SUMMARY... Scattered thunderstorms are expected Wednesday mainly across Utah, eastern Nevada and parts of western Wyoming and Colorado. A few storms may produce gusty winds and hail. ...Synopsis... An upper ridge will shift into the Plains on Wednesday, flanked by expansive upper troughs to the east and west. With an upper low skirting the Pacific Northwest, a leading shortwave trough will move across the Great Basin during the day, with still another digging into the lower CO river valley into Thursday morning. Low pressure will shift east across UT and WY, with strengthening deep-layer shear profiles and lift supporting a few strong storms. Elsewhere, high pressure over the eastern CONUS will maintain stable conditions. ...Eastern Great Basin... Although it will not be particularly warm, some daytime heating combined with rapid cooling aloft will result in a gradually destabilizing air mass by late afternoon from eastern NV into UT. Large-scale lift will be quite supportive of thunderstorms becoming most numerous between 21-00Z. Cool temperatures aloft combined with long straight-line hodographs will support cellular activity, with small hail likely. Some hail may be marginally severe. A storm or two may also take on a bowing structure with locally strong wind gusts. ..Jewell/Cook.. 03/14/2018 Read more



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