Tag: dec

SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0159 PM CST Wed Dec 11 2024 Valid 112000Z - 121200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS INTO THIS EVENING OVER THE COASTAL MID-ATLANTIC... ...SUMMARY... Severe wind gusts and a tornado or two are possible from the eastern Carolinas to southern New England. ...20Z Update... Severe probabilities have been trimmed along the western portion of the outlook, and reduced along the southern New England coast. For both areas, widespread stratiform rain has limited destabilization and the overall severe threat. Farther south, severe probabilities

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1106 AM CST Wed Dec 11 2024 Valid 121200Z - 131200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm probabilities are negligible on Thursday. ...Discussion... A quiescent pattern for thunderstorm activity will envelop much of the CONUS tomorrow. Two areas of sub-10 percent thunderstorm probabilities remain apparent. An Arctic air mass will settle into the Upper Great Lakes. Downstream, lake-effect snow bands will persist with the most organized one expected in the lee of eastern Lake Ontario. A few lightning flashes are possible during the period of

SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1222 AM CST Wed Dec 11 2024 Valid 121200Z - 131200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Thursday. ...Synopsis... In the wake of a strong shortwave trough moving into the Canadian Maritimes, a mid/upper cyclone is forecast to progress from the Ontario/Quebec border vicinity eastward through Quebec on Thursday. Strong mid-level flow throughout the base of this cyclone is expected to extend from the northern/central Plains through the Northeast. Even with these strong dynamics, extensive surface ridging is expected from the

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1158 PM CST Tue Dec 10 2024 Valid 111200Z - 121200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF SOUTHERN NEW ENGLAND ALONG THE ATLANTIC COAST SOUTH TO FAR NORTHEASTERN NORTH CAROLINA... ...SUMMARY... Isolated severe thunderstorms are possible today across the East Coast States, as far north as southern New England. The most probable area for a few tornadoes and damaging winds appears to be centered on eastern North Carolina from midday onward. ...Synopsis... South of a closed low over the western

SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0157 PM CST Tue Dec 10 2024 Valid 102000Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH THIS EVENING FROM EAST-CENTRAL ALABAMA INTO WEST-CENTRAL GEORGIA... ...SUMMARY... A few strong to severe thunderstorms may affect portions of east-central Alabama into west-central Georgia through this evening. ...20Z Update... The primary change with this update was to trim the western portion of severe probabilities, where the convective line and related wind shift has progressed eastward. Ahead of the line, latest radar data has shown brief/transient