Tag: severe

SPC 1930Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0125 PM CST Thu Dec 12 2024 Valid 141200Z - 151200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected on Saturday. ...Central States... A shortwave trough over the central Great Plains will progress east into the Midwest, dampening somewhat late in the period. Its associated weak surface cyclone over eastern KS should undergo cyclolysis by early Sunday as it moves across the Mid-MS Valley. 60s surface dew points should generally be confined to east and south TX through Saturday afternoon. Low-amplitude mid-level

SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0219 AM CST Thu Dec 12 2024 Valid 141200Z - 151200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from the Texas Hill Country into the Middle/Lower Mississippi Valley on Saturday. ...Synopsis and Discussion... A stacked mid-latitude cyclone is forecast to be over the central Plains early Saturday morning before progressing northeastward throughout the day and ending the period over the Mid MS Valley. This cyclone will be accompanied by strong mid-level jet throughout its base, which will spread from OK northeastward across

SPC 1930Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0102 PM CST Wed Dec 11 2024 Valid 131200Z - 141200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected through Friday night. ...Discussion... A compact shortwave trough near the Four Corners Area should move across the southern Rockies into the central Great Plains. The attendant surface cyclone will be weak, tracking from the Raton Mesa vicinity to eastern KS. Modifying moisture return from the western Gulf will become sufficient for elevated convection by Friday Night across parts of the south-central states. Moderate

SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0150 AM CST Wed Dec 11 2024 Valid 131200Z - 141200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible Friday afternoon through early Saturday morning from the Middle Texas Coast into the Ozark Plateau. ...Synopsis and Discussion... A shortwave trough is forecast to begin the period over the Four Corners before then continuing eastward across the central Rockies and ending the period over the central Plains. An associated surface low is expected to move quickly northeastward just ahead of this shortwave, progressing from

SPC 1930Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 1250 PM CST Tue Dec 10 2024 Valid 121200Z - 131200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Thursday. ...Discussion... A quiescent synoptic pattern for thunderstorm activity is expected on Thursday. In the wake of a cold front pushing offshore of the entire East Coast on D2, an Arctic air mass will settle into the Upper Great Lakes. A couple lightning flashes are possible in the heaviest lake-effect snow bands immediately downstream of the Lower Great Lakes, but probabilities appear to be

SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0204 AM CST Tue Dec 10 2024 Valid 121200Z - 131200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Thursday. ...Synopsis... A mid/upper cyclone is forecast to be over the Ontario/Quebec vicinity early Thursday morning, with cyclonic flow throughout its base extending from the northern/central Plains through the Northeast. This cyclone is expected to gradually shift eastward through Quebec, with the associated cyclonic flow shifting northward and eastward as well. Farther west, a low-amplitude shortwave trough is expected to progress across the Great

SPC 1930Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0111 PM CST Mon Dec 09 2024 Valid 111200Z - 121200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM EASTERN NORTH CAROLINA TO SOUTHERN NEW ENGLAND... ...SUMMARY... Strong to isolated severe thunderstorms are possible along and ahead of a cold front from the Mid-Atlantic into the Florida Peninsula on Wednesday. ...Synopsis... As a strong mid-level trough becomes negatively tilted across the eastern CONUS, a surface low will deepen as it moves north along the spine of the Appalachians and tropospheric flow will strengthen across

SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0230 AM CST Mon Dec 09 2024 Valid 111200Z - 121200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible along and ahead of a cold front from the Mid-Atlantic into the Florida Peninsula on Wednesday. ...Synopsis and Discussion... Deep upper troughing is expected to extend from Saskatchewan/western Ontario southward along the length of the MS Valley into the western Gulf early Wednesday morning. A shortwave trough embedded within the base of this larger troughing is forecast to move quickly northeastward from the Lower

SPC 1930Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0119 PM CST Sun Dec 08 2024 Valid 101200Z - 111200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PARTS OF CENTRAL AND SOUTH AL...SOUTHWEST GA...AND THE ADJACENT FL PANHANDLE... ...SUMMARY... Isolated severe thunderstorms are possible across portions of central and south Alabama, southwest Georgia, and the adjacent Florida Panhandle on Tuesday. ...Synopsis... A deep mid/upper-level trough across much of the central/eastern CONUS will begin to shift eastward on Tuesday. This trough will take on a neutral tilt as a significant shortwave moves through