Severe Storms

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0158 AM CST Mon Dec 30 2024 Valid 011200Z - 021200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected Wednesday. ...Synopsis... Broad cyclonic flow is expected to persist across the CONUS on Wednesday as one shortwave trough exits the Northeast and a series of low-amplitude shortwave troughs follow in its wake across the Plains. Surface ridging associated with a dry continental airmass is forecast across the central and eastern CONUS, precluding any thunderstorm potential. Dry and stable conditions are anticipated across the western CONUS as well. ..Mosier.. 12/30/2024 Read more

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0158 AM CST Mon Dec 30 2024 Valid 011200Z - 021200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected Wednesday. ...Synopsis... Broad cyclonic flow is expected to persist across the CONUS on Wednesday as one shortwave trough exits the Northeast and a series of low-amplitude shortwave troughs follow in its wake across the Plains. Surface ridging associated with a dry continental airmass is forecast across the central and eastern CONUS, precluding any thunderstorm potential. Dry and stable conditions are anticipated across the western CONUS as well. ..Mosier.. 12/30/2024 Read more

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0158 AM CST Mon Dec 30 2024 Valid 011200Z - 021200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected Wednesday. ...Synopsis... Broad cyclonic flow is expected to persist across the CONUS on Wednesday as one shortwave trough exits the Northeast and a series of low-amplitude shortwave troughs follow in its wake across the Plains. Surface ridging associated with a dry continental airmass is forecast across the central and eastern CONUS, precluding any thunderstorm potential. Dry and stable conditions are anticipated across the western CONUS as well. ..Mosier.. 12/30/2024 Read more

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0158 AM CST Mon Dec 30 2024 Valid 011200Z - 021200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected Wednesday. ...Synopsis... Broad cyclonic flow is expected to persist across the CONUS on Wednesday as one shortwave trough exits the Northeast and a series of low-amplitude shortwave troughs follow in its wake across the Plains. Surface ridging associated with a dry continental airmass is forecast across the central and eastern CONUS, precluding any thunderstorm potential. Dry and stable conditions are anticipated across the western CONUS as well. ..Mosier.. 12/30/2024 Read more

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0158 AM CST Mon Dec 30 2024 Valid 011200Z - 021200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected Wednesday. ...Synopsis... Broad cyclonic flow is expected to persist across the CONUS on Wednesday as one shortwave trough exits the Northeast and a series of low-amplitude shortwave troughs follow in its wake across the Plains. Surface ridging associated with a dry continental airmass is forecast across the central and eastern CONUS, precluding any thunderstorm potential. Dry and stable conditions are anticipated across the western CONUS as well. ..Mosier.. 12/30/2024 Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0122 AM CST Mon Dec 30 2024 Valid 301200Z - 311200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE SOUTHERN HIGH PLAINS INTO THE BIG BEND... ...Synopsis... Enhanced westerly flow aloft will overspread the central/southern Rockies today through the base of a mid-level shortwave moving across the central/southern Plains. Surface cyclogenesis is expected with strengthening lee troughing. This pattern will lead to an increase in westerly surface winds across portions of the southern High Plains, supporting a broad region of Elevated to Critical fire weather concerns. ...Eastern New Mexico, Texas/Oklahoma Panhandle, Western Texas... Warm/dry/gusty westerly downslope flow is expected across eastern New Mexico into western Texas/Oklahoma today. Afternoon relative-humidity reductions to around 10-20 percent (driest across portions of western Texas) will overlap surface winds sustained around 20-25 mph. Fuels within this region have seen drying over the last several days. While latest fuel guidance suggests 100-hr fuels are largely marginal, the extended period of critical winds and relative humidity should lead to further drying (especially of fine fuels), supporting risk for fire spread. ...Southern California... Offshore gradients will increase today across southern California, with gusty winds (25-45 mph) across the Transverse ranges. This will overlap relative-humidity reductions to around 15-30%. An Elevated region was maintained with this outlook to cover this threat. ..Thornton.. 12/30/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0122 AM CST Mon Dec 30 2024 Valid 301200Z - 311200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE SOUTHERN HIGH PLAINS INTO THE BIG BEND... ...Synopsis... Enhanced westerly flow aloft will overspread the central/southern Rockies today through the base of a mid-level shortwave moving across the central/southern Plains. Surface cyclogenesis is expected with strengthening lee troughing. This pattern will lead to an increase in westerly surface winds across portions of the southern High Plains, supporting a broad region of Elevated to Critical fire weather concerns. ...Eastern New Mexico, Texas/Oklahoma Panhandle, Western Texas... Warm/dry/gusty westerly downslope flow is expected across eastern New Mexico into western Texas/Oklahoma today. Afternoon relative-humidity reductions to around 10-20 percent (driest across portions of western Texas) will overlap surface winds sustained around 20-25 mph. Fuels within this region have seen drying over the last several days. While latest fuel guidance suggests 100-hr fuels are largely marginal, the extended period of critical winds and relative humidity should lead to further drying (especially of fine fuels), supporting risk for fire spread. ...Southern California... Offshore gradients will increase today across southern California, with gusty winds (25-45 mph) across the Transverse ranges. This will overlap relative-humidity reductions to around 15-30%. An Elevated region was maintained with this outlook to cover this threat. ..Thornton.. 12/30/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0122 AM CST Mon Dec 30 2024 Valid 301200Z - 311200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE SOUTHERN HIGH PLAINS INTO THE BIG BEND... ...Synopsis... Enhanced westerly flow aloft will overspread the central/southern Rockies today through the base of a mid-level shortwave moving across the central/southern Plains. Surface cyclogenesis is expected with strengthening lee troughing. This pattern will lead to an increase in westerly surface winds across portions of the southern High Plains, supporting a broad region of Elevated to Critical fire weather concerns. ...Eastern New Mexico, Texas/Oklahoma Panhandle, Western Texas... Warm/dry/gusty westerly downslope flow is expected across eastern New Mexico into western Texas/Oklahoma today. Afternoon relative-humidity reductions to around 10-20 percent (driest across portions of western Texas) will overlap surface winds sustained around 20-25 mph. Fuels within this region have seen drying over the last several days. While latest fuel guidance suggests 100-hr fuels are largely marginal, the extended period of critical winds and relative humidity should lead to further drying (especially of fine fuels), supporting risk for fire spread. ...Southern California... Offshore gradients will increase today across southern California, with gusty winds (25-45 mph) across the Transverse ranges. This will overlap relative-humidity reductions to around 15-30%. An Elevated region was maintained with this outlook to cover this threat. ..Thornton.. 12/30/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0122 AM CST Mon Dec 30 2024 Valid 301200Z - 311200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE SOUTHERN HIGH PLAINS INTO THE BIG BEND... ...Synopsis... Enhanced westerly flow aloft will overspread the central/southern Rockies today through the base of a mid-level shortwave moving across the central/southern Plains. Surface cyclogenesis is expected with strengthening lee troughing. This pattern will lead to an increase in westerly surface winds across portions of the southern High Plains, supporting a broad region of Elevated to Critical fire weather concerns. ...Eastern New Mexico, Texas/Oklahoma Panhandle, Western Texas... Warm/dry/gusty westerly downslope flow is expected across eastern New Mexico into western Texas/Oklahoma today. Afternoon relative-humidity reductions to around 10-20 percent (driest across portions of western Texas) will overlap surface winds sustained around 20-25 mph. Fuels within this region have seen drying over the last several days. While latest fuel guidance suggests 100-hr fuels are largely marginal, the extended period of critical winds and relative humidity should lead to further drying (especially of fine fuels), supporting risk for fire spread. ...Southern California... Offshore gradients will increase today across southern California, with gusty winds (25-45 mph) across the Transverse ranges. This will overlap relative-humidity reductions to around 15-30%. An Elevated region was maintained with this outlook to cover this threat. ..Thornton.. 12/30/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0122 AM CST Mon Dec 30 2024 Valid 301200Z - 311200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE SOUTHERN HIGH PLAINS INTO THE BIG BEND... ...Synopsis... Enhanced westerly flow aloft will overspread the central/southern Rockies today through the base of a mid-level shortwave moving across the central/southern Plains. Surface cyclogenesis is expected with strengthening lee troughing. This pattern will lead to an increase in westerly surface winds across portions of the southern High Plains, supporting a broad region of Elevated to Critical fire weather concerns. ...Eastern New Mexico, Texas/Oklahoma Panhandle, Western Texas... Warm/dry/gusty westerly downslope flow is expected across eastern New Mexico into western Texas/Oklahoma today. Afternoon relative-humidity reductions to around 10-20 percent (driest across portions of western Texas) will overlap surface winds sustained around 20-25 mph. Fuels within this region have seen drying over the last several days. While latest fuel guidance suggests 100-hr fuels are largely marginal, the extended period of critical winds and relative humidity should lead to further drying (especially of fine fuels), supporting risk for fire spread. ...Southern California... Offshore gradients will increase today across southern California, with gusty winds (25-45 mph) across the Transverse ranges. This will overlap relative-humidity reductions to around 15-30%. An Elevated region was maintained with this outlook to cover this threat. ..Thornton.. 12/30/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0122 AM CST Mon Dec 30 2024 Valid 301200Z - 311200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE SOUTHERN HIGH PLAINS INTO THE BIG BEND... ...Synopsis... Enhanced westerly flow aloft will overspread the central/southern Rockies today through the base of a mid-level shortwave moving across the central/southern Plains. Surface cyclogenesis is expected with strengthening lee troughing. This pattern will lead to an increase in westerly surface winds across portions of the southern High Plains, supporting a broad region of Elevated to Critical fire weather concerns. ...Eastern New Mexico, Texas/Oklahoma Panhandle, Western Texas... Warm/dry/gusty westerly downslope flow is expected across eastern New Mexico into western Texas/Oklahoma today. Afternoon relative-humidity reductions to around 10-20 percent (driest across portions of western Texas) will overlap surface winds sustained around 20-25 mph. Fuels within this region have seen drying over the last several days. While latest fuel guidance suggests 100-hr fuels are largely marginal, the extended period of critical winds and relative humidity should lead to further drying (especially of fine fuels), supporting risk for fire spread. ...Southern California... Offshore gradients will increase today across southern California, with gusty winds (25-45 mph) across the Transverse ranges. This will overlap relative-humidity reductions to around 15-30%. An Elevated region was maintained with this outlook to cover this threat. ..Thornton.. 12/30/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1232 AM CST Mon Dec 30 2024 Valid 311200Z - 011200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from the Outer Banks into southern New England late Tuesday into early Wednesday. Severe thunderstorms are not expected. ...Synopsis... A compact shortwave trough is forecast to move from the OH Valley northeastward into southern New England on Tuesday. An attendant surface low will take a similar path throughout the day while gradually occluding, reaching western NY by late Tuesday night/early Wednesday morning. An associated cold front is expected to push from the Mid MS/Lower OH Valleys eastward through the remainder of the OH Valley, the TN Valley, and Southeast States. By Wednesday evening, a surface low generated by secondary cyclogenesis at the triple point will likely be over the Delmarva Peninsula vicinity, with the associated cold front extending from this low southwestward through the central Carolinas, southern GA, and the western FL Peninsula. Continued eastward progress will take this front off the East Coast and through all but south FL by early Wednesday morning. Limited low-level moisture and attendant buoyancy is anticipated ahead of this shortwave and its associated cold front, precluding thunderstorm development across much of the eastern CONUS. Some deeper convective cores are possible along and ahead of the cold front across the middle OH Valley Wednesday morning. A few lightning flashes are possible, but current expectation is for overall coverage to remain less than 10 percent. A greater risk for thunderstorms is possible from the NC Outer Banks into southern New England from Tuesday evening into Wednesday morning. Here, strong warm-air advection within the warm conveyor could result in a few elevated storms deep enough to produce lightning. ..Mosier.. 12/30/2024 Read more

SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1232 AM CST Mon Dec 30 2024 Valid 311200Z - 011200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from the Outer Banks into southern New England late Tuesday into early Wednesday. Severe thunderstorms are not expected. ...Synopsis... A compact shortwave trough is forecast to move from the OH Valley northeastward into southern New England on Tuesday. An attendant surface low will take a similar path throughout the day while gradually occluding, reaching western NY by late Tuesday night/early Wednesday morning. An associated cold front is expected to push from the Mid MS/Lower OH Valleys eastward through the remainder of the OH Valley, the TN Valley, and Southeast States. By Wednesday evening, a surface low generated by secondary cyclogenesis at the triple point will likely be over the Delmarva Peninsula vicinity, with the associated cold front extending from this low southwestward through the central Carolinas, southern GA, and the western FL Peninsula. Continued eastward progress will take this front off the East Coast and through all but south FL by early Wednesday morning. Limited low-level moisture and attendant buoyancy is anticipated ahead of this shortwave and its associated cold front, precluding thunderstorm development across much of the eastern CONUS. Some deeper convective cores are possible along and ahead of the cold front across the middle OH Valley Wednesday morning. A few lightning flashes are possible, but current expectation is for overall coverage to remain less than 10 percent. A greater risk for thunderstorms is possible from the NC Outer Banks into southern New England from Tuesday evening into Wednesday morning. Here, strong warm-air advection within the warm conveyor could result in a few elevated storms deep enough to produce lightning. ..Mosier.. 12/30/2024 Read more

SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1232 AM CST Mon Dec 30 2024 Valid 311200Z - 011200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from the Outer Banks into southern New England late Tuesday into early Wednesday. Severe thunderstorms are not expected. ...Synopsis... A compact shortwave trough is forecast to move from the OH Valley northeastward into southern New England on Tuesday. An attendant surface low will take a similar path throughout the day while gradually occluding, reaching western NY by late Tuesday night/early Wednesday morning. An associated cold front is expected to push from the Mid MS/Lower OH Valleys eastward through the remainder of the OH Valley, the TN Valley, and Southeast States. By Wednesday evening, a surface low generated by secondary cyclogenesis at the triple point will likely be over the Delmarva Peninsula vicinity, with the associated cold front extending from this low southwestward through the central Carolinas, southern GA, and the western FL Peninsula. Continued eastward progress will take this front off the East Coast and through all but south FL by early Wednesday morning. Limited low-level moisture and attendant buoyancy is anticipated ahead of this shortwave and its associated cold front, precluding thunderstorm development across much of the eastern CONUS. Some deeper convective cores are possible along and ahead of the cold front across the middle OH Valley Wednesday morning. A few lightning flashes are possible, but current expectation is for overall coverage to remain less than 10 percent. A greater risk for thunderstorms is possible from the NC Outer Banks into southern New England from Tuesday evening into Wednesday morning. Here, strong warm-air advection within the warm conveyor could result in a few elevated storms deep enough to produce lightning. ..Mosier.. 12/30/2024 Read more

SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1232 AM CST Mon Dec 30 2024 Valid 311200Z - 011200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from the Outer Banks into southern New England late Tuesday into early Wednesday. Severe thunderstorms are not expected. ...Synopsis... A compact shortwave trough is forecast to move from the OH Valley northeastward into southern New England on Tuesday. An attendant surface low will take a similar path throughout the day while gradually occluding, reaching western NY by late Tuesday night/early Wednesday morning. An associated cold front is expected to push from the Mid MS/Lower OH Valleys eastward through the remainder of the OH Valley, the TN Valley, and Southeast States. By Wednesday evening, a surface low generated by secondary cyclogenesis at the triple point will likely be over the Delmarva Peninsula vicinity, with the associated cold front extending from this low southwestward through the central Carolinas, southern GA, and the western FL Peninsula. Continued eastward progress will take this front off the East Coast and through all but south FL by early Wednesday morning. Limited low-level moisture and attendant buoyancy is anticipated ahead of this shortwave and its associated cold front, precluding thunderstorm development across much of the eastern CONUS. Some deeper convective cores are possible along and ahead of the cold front across the middle OH Valley Wednesday morning. A few lightning flashes are possible, but current expectation is for overall coverage to remain less than 10 percent. A greater risk for thunderstorms is possible from the NC Outer Banks into southern New England from Tuesday evening into Wednesday morning. Here, strong warm-air advection within the warm conveyor could result in a few elevated storms deep enough to produce lightning. ..Mosier.. 12/30/2024 Read more

SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1232 AM CST Mon Dec 30 2024 Valid 311200Z - 011200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from the Outer Banks into southern New England late Tuesday into early Wednesday. Severe thunderstorms are not expected. ...Synopsis... A compact shortwave trough is forecast to move from the OH Valley northeastward into southern New England on Tuesday. An attendant surface low will take a similar path throughout the day while gradually occluding, reaching western NY by late Tuesday night/early Wednesday morning. An associated cold front is expected to push from the Mid MS/Lower OH Valleys eastward through the remainder of the OH Valley, the TN Valley, and Southeast States. By Wednesday evening, a surface low generated by secondary cyclogenesis at the triple point will likely be over the Delmarva Peninsula vicinity, with the associated cold front extending from this low southwestward through the central Carolinas, southern GA, and the western FL Peninsula. Continued eastward progress will take this front off the East Coast and through all but south FL by early Wednesday morning. Limited low-level moisture and attendant buoyancy is anticipated ahead of this shortwave and its associated cold front, precluding thunderstorm development across much of the eastern CONUS. Some deeper convective cores are possible along and ahead of the cold front across the middle OH Valley Wednesday morning. A few lightning flashes are possible, but current expectation is for overall coverage to remain less than 10 percent. A greater risk for thunderstorms is possible from the NC Outer Banks into southern New England from Tuesday evening into Wednesday morning. Here, strong warm-air advection within the warm conveyor could result in a few elevated storms deep enough to produce lightning. ..Mosier.. 12/30/2024 Read more

SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1232 AM CST Mon Dec 30 2024 Valid 311200Z - 011200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from the Outer Banks into southern New England late Tuesday into early Wednesday. Severe thunderstorms are not expected. ...Synopsis... A compact shortwave trough is forecast to move from the OH Valley northeastward into southern New England on Tuesday. An attendant surface low will take a similar path throughout the day while gradually occluding, reaching western NY by late Tuesday night/early Wednesday morning. An associated cold front is expected to push from the Mid MS/Lower OH Valleys eastward through the remainder of the OH Valley, the TN Valley, and Southeast States. By Wednesday evening, a surface low generated by secondary cyclogenesis at the triple point will likely be over the Delmarva Peninsula vicinity, with the associated cold front extending from this low southwestward through the central Carolinas, southern GA, and the western FL Peninsula. Continued eastward progress will take this front off the East Coast and through all but south FL by early Wednesday morning. Limited low-level moisture and attendant buoyancy is anticipated ahead of this shortwave and its associated cold front, precluding thunderstorm development across much of the eastern CONUS. Some deeper convective cores are possible along and ahead of the cold front across the middle OH Valley Wednesday morning. A few lightning flashes are possible, but current expectation is for overall coverage to remain less than 10 percent. A greater risk for thunderstorms is possible from the NC Outer Banks into southern New England from Tuesday evening into Wednesday morning. Here, strong warm-air advection within the warm conveyor could result in a few elevated storms deep enough to produce lightning. ..Mosier.. 12/30/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1153 PM CST Sun Dec 29 2024 Valid 301200Z - 311200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected to develop in the U.S. today or tonight. ...DISCUSSION... A large-scale mid-level trough will move northeastward across the Northeast today, as another mid-level trough moves through the central U.S. At the surface, a relatively dry airmass will be in place across much of the nation. For this reason, thunderstorms are not expected to develop across the continental U.S. today or tonight. ..Broyles/Thornton.. 12/30/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1153 PM CST Sun Dec 29 2024 Valid 301200Z - 311200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected to develop in the U.S. today or tonight. ...DISCUSSION... A large-scale mid-level trough will move northeastward across the Northeast today, as another mid-level trough moves through the central U.S. At the surface, a relatively dry airmass will be in place across much of the nation. For this reason, thunderstorms are not expected to develop across the continental U.S. today or tonight. ..Broyles/Thornton.. 12/30/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1153 PM CST Sun Dec 29 2024 Valid 301200Z - 311200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected to develop in the U.S. today or tonight. ...DISCUSSION... A large-scale mid-level trough will move northeastward across the Northeast today, as another mid-level trough moves through the central U.S. At the surface, a relatively dry airmass will be in place across much of the nation. For this reason, thunderstorms are not expected to develop across the continental U.S. today or tonight. ..Broyles/Thornton.. 12/30/2024 Read more