Tag: utc

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0651 AM CST Tue Dec 24 2024 Valid 241300Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PORTIONS OF CENTRAL...EAST...AND SOUTHEAST TEXAS... ...SUMMARY... Isolated to widely scattered strong to severe thunderstorms capable of large hail and damaging gusts are possible late this afternoon into the overnight. ...Central and eastern TX... Water-vapor imagery early this morning shows an upper trough digging southeastward over the southern High Plains. This upper feature is expected to reach eastern TX and the western Gulf of Mexico by

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0651 PM CST Mon Dec 23 2024 Valid 240100Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast through tonight across the contiguous United States. ...Discussion... Little lightning activity is ongoing this evening across the CONUS, with a few flashes noted just off the northern CA Coast earlier. Weak levels of elevated instability ahead of the primary upper trough may support sporadic flashes through tonight, mainly over northern CA. A greater chance of thunderstorms will occur over parts of OK and

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0642 AM CST Mon Dec 23 2024 Valid 231300Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast through tonight across the contiguous United States. ...Synopsis... Water-vapor imagery this morning shows a mid-level trough over AZ moving east and a northern stream trough over the Pacific Northwest. The northern mid-level trough will latitudinally expand southward into the central Rockies/south-central High Plains as a ridge amplifies over the Interior West in its wake. As this occurs, a partial phasing of mid-level trough