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Tag: spc

Official

SPC Dec 21, 2024 1300 UTC Day 1 Convective Outlook

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0650 AM CST Sat Dec 21 2024 Valid 211300Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible this morning into early afternoon across parts of coastal Oregon and northern California. ...Coastal OR/northern CA... A potent mid to upper-level shortwave trough will move ashore the northern CA/OR coast and continue northeastward into the southern Canadian Rockies/northern Rockies vicinity through late tonight. Weak thunderstorm activity embedded within a warm-air advection rain shield will continue moving into the coastal range mountains this morning before
StormPrep
Official

SPC Dec 21, 2024 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0322 AM CST Sat Dec 21 2024 Valid 241200Z - 291200Z ...DISCUSSION... A more active southern-stream pattern is expected next week with several lower latitude troughs crossing the southern tier, along with some northward increase in low-level moisture across parts of Texas to the Lower Mississippi Valley and Gulf Coast. On Tuesday/Day 4, one such shortwave trough should influence increasing thunderstorm potential across south-central to east/southeast Texas. Some severe risk could materialize Tuesday, but it appears that overall buoyancy will be weak with the severe potential currently
StormPrep
Official

SPC Dec 21, 2024 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0644 PM CST Fri Dec 20 2024 Valid 210100Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible along the northern California coast early morning Saturday. ...Northern CA coast... An amplified upper trough will move northeast and approach the Pacific Northwest coast through 12Z Saturday. This will yield a pronounced low-level warm conveyor to overspread the adjacent offshore waters. This forcing for ascent in conjunction with an ample buoyancy plume has supported scattered to widespread thunderstorms around 500-600 miles offshore. This buoyancy
StormPrep
Official

SPC Dec 20, 2024 1300 UTC Day 1 Convective Outlook

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0644 AM CST Fri Dec 20 2024 Valid 201300Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe weather is not forecast across the contiguous United States through tonight. ...Synopsis... Water-vapor imagery this morning shows an upper trough centered over the Great Lakes, with this feature forecast to move east into the Northeast and east of the Mid-Atlantic states by late tonight. Farther west, a mid-level ridge will reside over the Rockies with an upper trough over the eastern Pacific approaching the northern CA/Pacific Northwest
StormPrep
Official

SPC Dec 20, 2024 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0304 AM CST Fri Dec 20 2024 Valid 231200Z - 281200Z ...DISCUSSION... A more active southern-stream pattern should evolve next week, with several lower latitude troughs crossing the southern tier along with some northward increase in low-level moisture across parts of Texas to the Lower Mississippi Valley and Gulf Coast. One such shortwave trough should influence increasing thunderstorm potential across east/southeast Texas on Tuesday/Day 5. Some severe risk could materialize, but it appears that overall buoyancy will be weak with the severe potential currently expected to be
StormPrep