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SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1012 AM CST Mon Feb 17 2025 Valid 171630Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast through tonight across the contiguous United States. ...Synopsis... A cold, continental-polar airmass is in place across the much of the Lower 48 today due to a 1045-mb surface high centered over the ND/Canada border region. Dry/cool offshore flow this morning has led to tranquil conditions across much of the Eastern Seaboard and Gulf coastlines. As a cold front pushes south across the central into the southern Great Plains, low-level flow will veer across the northwest Gulf Coast with onshore flow beginning mainly tonight. Thunderstorm potential in this region will be negated by the onset and limited duration of moisture return into the TX Gulf Coast. Cool/dry conditions will be pervasive across much of the CONUS. ..Smith/Lyons.. 02/17/2025 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1012 AM CST Mon Feb 17 2025 Valid 171630Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast through tonight across the contiguous United States. ...Synopsis... A cold, continental-polar airmass is in place across the much of the Lower 48 today due to a 1045-mb surface high centered over the ND/Canada border region. Dry/cool offshore flow this morning has led to tranquil conditions across much of the Eastern Seaboard and Gulf coastlines. As a cold front pushes south across the central into the southern Great Plains, low-level flow will veer across the northwest Gulf Coast with onshore flow beginning mainly tonight. Thunderstorm potential in this region will be negated by the onset and limited duration of moisture return into the TX Gulf Coast. Cool/dry conditions will be pervasive across much of the CONUS. ..Smith/Lyons.. 02/17/2025 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1012 AM CST Mon Feb 17 2025 Valid 171630Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast through tonight across the contiguous United States. ...Synopsis... A cold, continental-polar airmass is in place across the much of the Lower 48 today due to a 1045-mb surface high centered over the ND/Canada border region. Dry/cool offshore flow this morning has led to tranquil conditions across much of the Eastern Seaboard and Gulf coastlines. As a cold front pushes south across the central into the southern Great Plains, low-level flow will veer across the northwest Gulf Coast with onshore flow beginning mainly tonight. Thunderstorm potential in this region will be negated by the onset and limited duration of moisture return into the TX Gulf Coast. Cool/dry conditions will be pervasive across much of the CONUS. ..Smith/Lyons.. 02/17/2025 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1012 AM CST Mon Feb 17 2025 Valid 171630Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast through tonight across the contiguous United States. ...Synopsis... A cold, continental-polar airmass is in place across the much of the Lower 48 today due to a 1045-mb surface high centered over the ND/Canada border region. Dry/cool offshore flow this morning has led to tranquil conditions across much of the Eastern Seaboard and Gulf coastlines. As a cold front pushes south across the central into the southern Great Plains, low-level flow will veer across the northwest Gulf Coast with onshore flow beginning mainly tonight. Thunderstorm potential in this region will be negated by the onset and limited duration of moisture return into the TX Gulf Coast. Cool/dry conditions will be pervasive across much of the CONUS. ..Smith/Lyons.. 02/17/2025 Read more

SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0630 AM CST Mon Feb 17 2025 Valid 171300Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected through tonight. ...Synopsis and Discussion... A surface cold front is in the process of clearing far south FL and the Keys this morning. In its wake, expansive high pressure will dominate much of the central CONUS. Across the western states, a weak mid-level shortwave trough will advance from the Northwest towards the central Rockies through the period. With cool and/or dry conditions expected across a large majority of the CONUS, thunderstorm potential appears limited through tonight. ..Gleason/Broyles.. 02/17/2025 Read more

SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0630 AM CST Mon Feb 17 2025 Valid 171300Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected through tonight. ...Synopsis and Discussion... A surface cold front is in the process of clearing far south FL and the Keys this morning. In its wake, expansive high pressure will dominate much of the central CONUS. Across the western states, a weak mid-level shortwave trough will advance from the Northwest towards the central Rockies through the period. With cool and/or dry conditions expected across a large majority of the CONUS, thunderstorm potential appears limited through tonight. ..Gleason/Broyles.. 02/17/2025 Read more

SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0630 AM CST Mon Feb 17 2025 Valid 171300Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected through tonight. ...Synopsis and Discussion... A surface cold front is in the process of clearing far south FL and the Keys this morning. In its wake, expansive high pressure will dominate much of the central CONUS. Across the western states, a weak mid-level shortwave trough will advance from the Northwest towards the central Rockies through the period. With cool and/or dry conditions expected across a large majority of the CONUS, thunderstorm potential appears limited through tonight. ..Gleason/Broyles.. 02/17/2025 Read more

SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0630 AM CST Mon Feb 17 2025 Valid 171300Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected through tonight. ...Synopsis and Discussion... A surface cold front is in the process of clearing far south FL and the Keys this morning. In its wake, expansive high pressure will dominate much of the central CONUS. Across the western states, a weak mid-level shortwave trough will advance from the Northwest towards the central Rockies through the period. With cool and/or dry conditions expected across a large majority of the CONUS, thunderstorm potential appears limited through tonight. ..Gleason/Broyles.. 02/17/2025 Read more

SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0630 AM CST Mon Feb 17 2025 Valid 171300Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected through tonight. ...Synopsis and Discussion... A surface cold front is in the process of clearing far south FL and the Keys this morning. In its wake, expansive high pressure will dominate much of the central CONUS. Across the western states, a weak mid-level shortwave trough will advance from the Northwest towards the central Rockies through the period. With cool and/or dry conditions expected across a large majority of the CONUS, thunderstorm potential appears limited through tonight. ..Gleason/Broyles.. 02/17/2025 Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0256 AM CST Mon Feb 17 2025 Valid 201200Z - 251200Z ...DISCUSSION... In the wake of a prior Arctic cold front moving offshore the Gulf and Atlantic coasts, strong surface high pressure will settle over a large portion of the CONUS through much of the period. This will result in a dry, stable airmass and thunderstorm potential will be low. Severe storms are not expected during the Day 4-8 period. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0256 AM CST Mon Feb 17 2025 Valid 201200Z - 251200Z ...DISCUSSION... In the wake of a prior Arctic cold front moving offshore the Gulf and Atlantic coasts, strong surface high pressure will settle over a large portion of the CONUS through much of the period. This will result in a dry, stable airmass and thunderstorm potential will be low. Severe storms are not expected during the Day 4-8 period. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0256 AM CST Mon Feb 17 2025 Valid 201200Z - 251200Z ...DISCUSSION... In the wake of a prior Arctic cold front moving offshore the Gulf and Atlantic coasts, strong surface high pressure will settle over a large portion of the CONUS through much of the period. This will result in a dry, stable airmass and thunderstorm potential will be low. Severe storms are not expected during the Day 4-8 period. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0256 AM CST Mon Feb 17 2025 Valid 201200Z - 251200Z ...DISCUSSION... In the wake of a prior Arctic cold front moving offshore the Gulf and Atlantic coasts, strong surface high pressure will settle over a large portion of the CONUS through much of the period. This will result in a dry, stable airmass and thunderstorm potential will be low. Severe storms are not expected during the Day 4-8 period. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0256 AM CST Mon Feb 17 2025 Valid 201200Z - 251200Z ...DISCUSSION... In the wake of a prior Arctic cold front moving offshore the Gulf and Atlantic coasts, strong surface high pressure will settle over a large portion of the CONUS through much of the period. This will result in a dry, stable airmass and thunderstorm potential will be low. Severe storms are not expected during the Day 4-8 period. Read more

Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0256 AM CST Mon Feb 17 2025 Valid 201200Z - 251200Z ...DISCUSSION... In the wake of a prior Arctic cold front moving offshore the Gulf and Atlantic coasts, strong surface high pressure will settle over a large portion of the CONUS through much of the period. This will result in a dry, stable airmass and thunderstorm potential will be low. Severe storms are not expected during the Day 4-8 period. Read more

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0150 AM CST Mon Feb 17 2025 Valid 191200Z - 201200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible across portions of the Southeast on Wednesday, but severe storms are not expected. ...Synopsis... A strong, Arctic cold front will continue to surge east across the Southeast on Wednesday. Showers and thunderstorms will likely be ongoing Wednesday morning in a warm advection regime across parts of the central Gulf coast. This activity will shift east into southern GA and parts of north/central FL. While modest boundary-layer moisture will be in place ahead of the front, lapse rates will remain quite poor, limiting destabilization inland, with any substantial instability remaining over the warmer Gulf waters. While moderate vertical shear will overspread parts of the central Gulf coast and FL/GA, the poor thermodynamic environment will preclude severe thunderstorm potential. ..Leitman.. 02/17/2025 Read more

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0150 AM CST Mon Feb 17 2025 Valid 191200Z - 201200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible across portions of the Southeast on Wednesday, but severe storms are not expected. ...Synopsis... A strong, Arctic cold front will continue to surge east across the Southeast on Wednesday. Showers and thunderstorms will likely be ongoing Wednesday morning in a warm advection regime across parts of the central Gulf coast. This activity will shift east into southern GA and parts of north/central FL. While modest boundary-layer moisture will be in place ahead of the front, lapse rates will remain quite poor, limiting destabilization inland, with any substantial instability remaining over the warmer Gulf waters. While moderate vertical shear will overspread parts of the central Gulf coast and FL/GA, the poor thermodynamic environment will preclude severe thunderstorm potential. ..Leitman.. 02/17/2025 Read more

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0150 AM CST Mon Feb 17 2025 Valid 191200Z - 201200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible across portions of the Southeast on Wednesday, but severe storms are not expected. ...Synopsis... A strong, Arctic cold front will continue to surge east across the Southeast on Wednesday. Showers and thunderstorms will likely be ongoing Wednesday morning in a warm advection regime across parts of the central Gulf coast. This activity will shift east into southern GA and parts of north/central FL. While modest boundary-layer moisture will be in place ahead of the front, lapse rates will remain quite poor, limiting destabilization inland, with any substantial instability remaining over the warmer Gulf waters. While moderate vertical shear will overspread parts of the central Gulf coast and FL/GA, the poor thermodynamic environment will preclude severe thunderstorm potential. ..Leitman.. 02/17/2025 Read more

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0150 AM CST Mon Feb 17 2025 Valid 191200Z - 201200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible across portions of the Southeast on Wednesday, but severe storms are not expected. ...Synopsis... A strong, Arctic cold front will continue to surge east across the Southeast on Wednesday. Showers and thunderstorms will likely be ongoing Wednesday morning in a warm advection regime across parts of the central Gulf coast. This activity will shift east into southern GA and parts of north/central FL. While modest boundary-layer moisture will be in place ahead of the front, lapse rates will remain quite poor, limiting destabilization inland, with any substantial instability remaining over the warmer Gulf waters. While moderate vertical shear will overspread parts of the central Gulf coast and FL/GA, the poor thermodynamic environment will preclude severe thunderstorm potential. ..Leitman.. 02/17/2025 Read more

SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0150 AM CST Mon Feb 17 2025 Valid 191200Z - 201200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible across portions of the Southeast on Wednesday, but severe storms are not expected. ...Synopsis... A strong, Arctic cold front will continue to surge east across the Southeast on Wednesday. Showers and thunderstorms will likely be ongoing Wednesday morning in a warm advection regime across parts of the central Gulf coast. This activity will shift east into southern GA and parts of north/central FL. While modest boundary-layer moisture will be in place ahead of the front, lapse rates will remain quite poor, limiting destabilization inland, with any substantial instability remaining over the warmer Gulf waters. While moderate vertical shear will overspread parts of the central Gulf coast and FL/GA, the poor thermodynamic environment will preclude severe thunderstorm potential. ..Leitman.. 02/17/2025 Read more