Tag: spc

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1136 PM CST Sun Nov 24 2024 Valid 251200Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from this afternoon into tonight from Louisiana into parts of the southern Appalachians and Mid-Atlantic. Additional storms may develop near the northern California and Oregon coasts. No severe threat is expected. ...DISCUSSION... A mid-level trough will move eastward across the central U.S. today, as an associated cold front advances southeastward into the Ark-La-Tex and Mid Mississippi Valleys. By evening, the front should be located

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1112 AM CST Sun Nov 24 2024 Valid 251200Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible Monday into Monday night from Louisiana into parts of the Mid-South, and also near the Oregon and northern California coasts. ...Synopsis... A strong mid/upper-level shortwave trough is forecast to take on a negative tilt on Monday, as it moves quickly eastward across parts of the Midwest and Ohio Valley. An associated surface low is forecast to move from IL toward lower MI through the

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1004 AM CST Sun Nov 24 2024 Valid 241630Z - 251200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are unlikely through tonight. ...Pacific Northwest... Recent water vapor imagery shows persistent onshore flow regime along the Pacific Northwest coast, with several small vorticity maxima embedded in the flow. Several pockets of lightning have been noted with this offshore activity, but the trend has been for rapid dissipation of lightning as activity moved ashore. This trend should continue through the day, with the risk of thunderstorms

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0636 PM CST Sat Nov 23 2024 Valid 240100Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible this evening into tonight from northern California into parts of the Pacific Northwest, but no severe threat is expected. ...DISCUSSION... A powerful mid-level low, offshore from the Pacific Northwest, will move slowly southward across the eastern Pacific. Southwesterly mid-level flow will be in place across much of the western U.S. Thunderstorm development will be possible this evening into tonight from northern California into