Tag: convective

SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0136 PM CST Sat Jan 04 2025 Valid 042000Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms remain possible late tonight into early Sunday morning from parts of the southern/central Plains eastward to the Mid-South. Severe thunderstorms are not expected. ...20Z Update... A pronounced mid-level trough continues to amplify while traversing the Inter-mountain West, supporting a gradual increase in the strength of a low-level jet, which is currently positioned over the Plains states. Objective analysis shows richer low-level moisture over TX, which is

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1134 AM CST Sat Jan 04 2025 Valid 051200Z - 061200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS NORTHEASTERN LOUISIANA...FAR SOUTHEASTERN ARKANSAS...AND INTO WESTERN MISSISSIPPI... ...SUMMARY... Strong/severe thunderstorms are expected Sunday afternoon and evening from the Sabine River Valley into the lower to mid Mississippi Valley and central Gulf Coast states. Severe wind gusts, tornadoes and hail will be the primary threats. ...Synopsis... A mid-level closed low -- initially over the western Kansas vicinity -- is progged to advance steadily eastward Sunday, reaching

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1019 AM CST Sat Jan 04 2025 Valid 041630Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms may occur late tonight into early Sunday morning from parts of the southern/central Plains eastward to the Mid-South. Severe thunderstorms are not expected. ...KS to the Ozarks/Mid-South overnight... In response to southern High Plains lee cyclogenesis, a modifying air mass (boundary-layer dewpoints in the mid 60s) is returning northward from the western Gulf of Mexico to the TX coast. This moisture will continue spreading northward through

SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 0105 AM CST Sat Jan 04 2025 Valid 051200Z - 061200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF LOUISIANA...MISSISSIPPI AND ARKANSAS... ...SUMMARY... Severe thunderstorms will be possible Sunday afternoon and evening from the Sabine River Valley into the lower to mid Mississippi Valley and central Gulf Coast states. Severe wind gusts, tornadoes and hail will be the primary threats. ...Sabine River Valley/Lower to Mid Mississippi Valleys... A mid-level trough will move eastward through the southern Plains on Sunday, as an associated

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1133 PM CST Fri Jan 03 2025 Valid 041200Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible early Sunday morning across parts of the southern and central Plains eastward across the Ozarks. No severe weather is expected. ...Central Plains to Arkansas... Strong short-wave trough is forecast to advance across the Great Basin early in the period, then into the central/southern High Plains by 05/12z as a 500mb speed max translates through the base of the trough into western OK. This will

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Fri Jan 03 2025 Valid 041200Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible early Sunday morning across parts of the southern and central Plains eastward across the Ozarks. No severe weather is expected. ...Discussion... While a deep upper low will remain over eastern Canada and New England Saturday, the main feature aloft associated with the primary convective potential will be a short-wave trough initially over the Great Basin vicinity. This feature is forecast to strengthen with time

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1007 AM CST Fri Jan 03 2025 Valid 031630Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Sporadic lightning flashes may occur this afternoon and evening over parts of the coastal Pacific Northwest and northern California. Severe thunderstorms are not expected. ...Synopsis... Surface high pressure from the Rockies to the Southeast will result in a dry and stable airmass for much of the CONUS, precluding thunderstorm activity. The exception may be along portions of the Northwest coastal vicinity. Isolated thunderstorms are possible this afternoon and

SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1249 AM CST Fri Jan 03 2025 Valid 041200Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible early Sunday morning across parts of the southern and central Plains eastward into the Ozarks. No severe weather is expected. ...DISCUSSION... A mid-level trough will move from the Intermountain West Saturday morning to the southern Plains early Sunday morning. Low-level moisture advection will take place across the southern and central Plains, ahead of the approaching trough. In response, weak instability is expected to develop

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1122 PM CST Thu Jan 02 2025 Valid 031200Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Sporadic lightning flashes may occur this afternoon and evening over the coastal Pacific Northwest into interior northern California. Severe weather is not expected. ...Pacific Northwest... Upper ridge will shift east into the Rockies later this afternoon as a strong trough advances inland along the Pacific northwest. Latest guidance suggests 120-150m, 12hr height falls will overspread this region, coincident with highly diffluent flow aloft. Very cold mid-level temperatures, and

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1118 AM CST Thu Jan 02 2025 Valid 031200Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Sporadic lightning flashes may occur Friday afternoon and evening over the coastal Pacific Northwest. Severe weather is not expected. ...Synopsis... The pattern on Friday will feature an upper trough over the eastern CONUS, with a western ridge breaking down late. The shortwave trough responsible for the ridge breakdown will provide rapid cooling aloft late in the day from northern CA into western WA and OR, and overnight across