SPC Aug 6, 2024 1630 UTC Day 1 Convective Outlook

1 year ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Tue Aug 06 2024 Valid 061630Z - 071200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN OHIO ACROSS MUCH OF PENNSYLVANIA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF MONTANA INTO WESTERN SOUTH DAKOTA...THE COASTAL CAROLINAS...AND ACROSS PARTS OF ARIZONA... ...SUMMARY... Severe thunderstorms capable of damaging winds, hail, and isolated tornadoes will affect areas from northern Ohio into New Jersey today. Others areas of concerns include much of Montana into western South Dakota, the coastal Carolinas, and across parts of Arizona. ...OH to NJ... Recent water vapor loop shows a well-defined and fast-moving shortwave trough over Lower MI. This feature will track eastward across parts of OH/PA/NY today, along a corridor of strong heating/destabilization. This will lead to multiple clusters of intense convection capable of damaging winds, large hail. Winds aloft are seasonably strong, but low-level winds are relatively weak. Some increase in low-level winds/shear may occur later today, posing some risk of isolated tornadoes as well. ...MT/WY/SD... Multiple minor shortwave troughs will rotate through the top of the ridge over MT/WY today, while mid-level winds strengthen. A plume of mid-level moisture/lift ahead of these features will lead to scattered thunderstorms over the mountains of western MT by mid afternoon. This activity will spread into the adjacent Plains and intensify. Forecast soundings show sufficient deep-layer shear to support supercell storm structures capable of large hail and damaging wind gusts through the afternoon and evening. ...AZ... A weak upper low is present this morning over northern Mexico tracking slowly westward. Enhanced easterly mid level winds around the northern periphery of the low are spreading westward across AZ today. A few clusters of thunderstorms are likely to form over the mountains of eastern AZ and propagate westward through the evening into the lower deserts. This pattern appears favorable for a more organized damaging wind event across parts of AZ, although the details of thunderstorm coverage/intensity over the higher terrain of eastern AZ will help dictate the overall threat later today. ...Carolinas... TS Debby remains over southeast GA, with bands of offshore thunderstorms tracking inland along the coasts of SC/southeast NC. Sufficient low-level shear will remain in place through the afternoon and evening for a risk of transient mesocyclones and a few tornadoes through the forecast period. ..Hart/Halbert/Lyons.. 08/06/2024 Read more

SPC Aug 6, 2024 1630 UTC Day 1 Convective Outlook

1 year ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Tue Aug 06 2024 Valid 061630Z - 071200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN OHIO ACROSS MUCH OF PENNSYLVANIA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF MONTANA INTO WESTERN SOUTH DAKOTA...THE COASTAL CAROLINAS...AND ACROSS PARTS OF ARIZONA... ...SUMMARY... Severe thunderstorms capable of damaging winds, hail, and isolated tornadoes will affect areas from northern Ohio into New Jersey today. Others areas of concerns include much of Montana into western South Dakota, the coastal Carolinas, and across parts of Arizona. ...OH to NJ... Recent water vapor loop shows a well-defined and fast-moving shortwave trough over Lower MI. This feature will track eastward across parts of OH/PA/NY today, along a corridor of strong heating/destabilization. This will lead to multiple clusters of intense convection capable of damaging winds, large hail. Winds aloft are seasonably strong, but low-level winds are relatively weak. Some increase in low-level winds/shear may occur later today, posing some risk of isolated tornadoes as well. ...MT/WY/SD... Multiple minor shortwave troughs will rotate through the top of the ridge over MT/WY today, while mid-level winds strengthen. A plume of mid-level moisture/lift ahead of these features will lead to scattered thunderstorms over the mountains of western MT by mid afternoon. This activity will spread into the adjacent Plains and intensify. Forecast soundings show sufficient deep-layer shear to support supercell storm structures capable of large hail and damaging wind gusts through the afternoon and evening. ...AZ... A weak upper low is present this morning over northern Mexico tracking slowly westward. Enhanced easterly mid level winds around the northern periphery of the low are spreading westward across AZ today. A few clusters of thunderstorms are likely to form over the mountains of eastern AZ and propagate westward through the evening into the lower deserts. This pattern appears favorable for a more organized damaging wind event across parts of AZ, although the details of thunderstorm coverage/intensity over the higher terrain of eastern AZ will help dictate the overall threat later today. ...Carolinas... TS Debby remains over southeast GA, with bands of offshore thunderstorms tracking inland along the coasts of SC/southeast NC. Sufficient low-level shear will remain in place through the afternoon and evening for a risk of transient mesocyclones and a few tornadoes through the forecast period. ..Hart/Halbert/Lyons.. 08/06/2024 Read more

SPC Aug 6, 2024 1630 UTC Day 1 Convective Outlook

1 year ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Tue Aug 06 2024 Valid 061630Z - 071200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN OHIO ACROSS MUCH OF PENNSYLVANIA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF MONTANA INTO WESTERN SOUTH DAKOTA...THE COASTAL CAROLINAS...AND ACROSS PARTS OF ARIZONA... ...SUMMARY... Severe thunderstorms capable of damaging winds, hail, and isolated tornadoes will affect areas from northern Ohio into New Jersey today. Others areas of concerns include much of Montana into western South Dakota, the coastal Carolinas, and across parts of Arizona. ...OH to NJ... Recent water vapor loop shows a well-defined and fast-moving shortwave trough over Lower MI. This feature will track eastward across parts of OH/PA/NY today, along a corridor of strong heating/destabilization. This will lead to multiple clusters of intense convection capable of damaging winds, large hail. Winds aloft are seasonably strong, but low-level winds are relatively weak. Some increase in low-level winds/shear may occur later today, posing some risk of isolated tornadoes as well. ...MT/WY/SD... Multiple minor shortwave troughs will rotate through the top of the ridge over MT/WY today, while mid-level winds strengthen. A plume of mid-level moisture/lift ahead of these features will lead to scattered thunderstorms over the mountains of western MT by mid afternoon. This activity will spread into the adjacent Plains and intensify. Forecast soundings show sufficient deep-layer shear to support supercell storm structures capable of large hail and damaging wind gusts through the afternoon and evening. ...AZ... A weak upper low is present this morning over northern Mexico tracking slowly westward. Enhanced easterly mid level winds around the northern periphery of the low are spreading westward across AZ today. A few clusters of thunderstorms are likely to form over the mountains of eastern AZ and propagate westward through the evening into the lower deserts. This pattern appears favorable for a more organized damaging wind event across parts of AZ, although the details of thunderstorm coverage/intensity over the higher terrain of eastern AZ will help dictate the overall threat later today. ...Carolinas... TS Debby remains over southeast GA, with bands of offshore thunderstorms tracking inland along the coasts of SC/southeast NC. Sufficient low-level shear will remain in place through the afternoon and evening for a risk of transient mesocyclones and a few tornadoes through the forecast period. ..Hart/Halbert/Lyons.. 08/06/2024 Read more

SPC Aug 6, 2024 1630 UTC Day 1 Convective Outlook

1 year ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Tue Aug 06 2024 Valid 061630Z - 071200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN OHIO ACROSS MUCH OF PENNSYLVANIA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF MONTANA INTO WESTERN SOUTH DAKOTA...THE COASTAL CAROLINAS...AND ACROSS PARTS OF ARIZONA... ...SUMMARY... Severe thunderstorms capable of damaging winds, hail, and isolated tornadoes will affect areas from northern Ohio into New Jersey today. Others areas of concerns include much of Montana into western South Dakota, the coastal Carolinas, and across parts of Arizona. ...OH to NJ... Recent water vapor loop shows a well-defined and fast-moving shortwave trough over Lower MI. This feature will track eastward across parts of OH/PA/NY today, along a corridor of strong heating/destabilization. This will lead to multiple clusters of intense convection capable of damaging winds, large hail. Winds aloft are seasonably strong, but low-level winds are relatively weak. Some increase in low-level winds/shear may occur later today, posing some risk of isolated tornadoes as well. ...MT/WY/SD... Multiple minor shortwave troughs will rotate through the top of the ridge over MT/WY today, while mid-level winds strengthen. A plume of mid-level moisture/lift ahead of these features will lead to scattered thunderstorms over the mountains of western MT by mid afternoon. This activity will spread into the adjacent Plains and intensify. Forecast soundings show sufficient deep-layer shear to support supercell storm structures capable of large hail and damaging wind gusts through the afternoon and evening. ...AZ... A weak upper low is present this morning over northern Mexico tracking slowly westward. Enhanced easterly mid level winds around the northern periphery of the low are spreading westward across AZ today. A few clusters of thunderstorms are likely to form over the mountains of eastern AZ and propagate westward through the evening into the lower deserts. This pattern appears favorable for a more organized damaging wind event across parts of AZ, although the details of thunderstorm coverage/intensity over the higher terrain of eastern AZ will help dictate the overall threat later today. ...Carolinas... TS Debby remains over southeast GA, with bands of offshore thunderstorms tracking inland along the coasts of SC/southeast NC. Sufficient low-level shear will remain in place through the afternoon and evening for a risk of transient mesocyclones and a few tornadoes through the forecast period. ..Hart/Halbert/Lyons.. 08/06/2024 Read more

SPC Aug 6, 2024 1630 UTC Day 1 Convective Outlook

1 year ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Tue Aug 06 2024 Valid 061630Z - 071200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN OHIO ACROSS MUCH OF PENNSYLVANIA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF MONTANA INTO WESTERN SOUTH DAKOTA...THE COASTAL CAROLINAS...AND ACROSS PARTS OF ARIZONA... ...SUMMARY... Severe thunderstorms capable of damaging winds, hail, and isolated tornadoes will affect areas from northern Ohio into New Jersey today. Others areas of concerns include much of Montana into western South Dakota, the coastal Carolinas, and across parts of Arizona. ...OH to NJ... Recent water vapor loop shows a well-defined and fast-moving shortwave trough over Lower MI. This feature will track eastward across parts of OH/PA/NY today, along a corridor of strong heating/destabilization. This will lead to multiple clusters of intense convection capable of damaging winds, large hail. Winds aloft are seasonably strong, but low-level winds are relatively weak. Some increase in low-level winds/shear may occur later today, posing some risk of isolated tornadoes as well. ...MT/WY/SD... Multiple minor shortwave troughs will rotate through the top of the ridge over MT/WY today, while mid-level winds strengthen. A plume of mid-level moisture/lift ahead of these features will lead to scattered thunderstorms over the mountains of western MT by mid afternoon. This activity will spread into the adjacent Plains and intensify. Forecast soundings show sufficient deep-layer shear to support supercell storm structures capable of large hail and damaging wind gusts through the afternoon and evening. ...AZ... A weak upper low is present this morning over northern Mexico tracking slowly westward. Enhanced easterly mid level winds around the northern periphery of the low are spreading westward across AZ today. A few clusters of thunderstorms are likely to form over the mountains of eastern AZ and propagate westward through the evening into the lower deserts. This pattern appears favorable for a more organized damaging wind event across parts of AZ, although the details of thunderstorm coverage/intensity over the higher terrain of eastern AZ will help dictate the overall threat later today. ...Carolinas... TS Debby remains over southeast GA, with bands of offshore thunderstorms tracking inland along the coasts of SC/southeast NC. Sufficient low-level shear will remain in place through the afternoon and evening for a risk of transient mesocyclones and a few tornadoes through the forecast period. ..Hart/Halbert/Lyons.. 08/06/2024 Read more

SPC Aug 6, 2024 1630 UTC Day 1 Convective Outlook

1 year ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Tue Aug 06 2024 Valid 061630Z - 071200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN OHIO ACROSS MUCH OF PENNSYLVANIA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF MONTANA INTO WESTERN SOUTH DAKOTA...THE COASTAL CAROLINAS...AND ACROSS PARTS OF ARIZONA... ...SUMMARY... Severe thunderstorms capable of damaging winds, hail, and isolated tornadoes will affect areas from northern Ohio into New Jersey today. Others areas of concerns include much of Montana into western South Dakota, the coastal Carolinas, and across parts of Arizona. ...OH to NJ... Recent water vapor loop shows a well-defined and fast-moving shortwave trough over Lower MI. This feature will track eastward across parts of OH/PA/NY today, along a corridor of strong heating/destabilization. This will lead to multiple clusters of intense convection capable of damaging winds, large hail. Winds aloft are seasonably strong, but low-level winds are relatively weak. Some increase in low-level winds/shear may occur later today, posing some risk of isolated tornadoes as well. ...MT/WY/SD... Multiple minor shortwave troughs will rotate through the top of the ridge over MT/WY today, while mid-level winds strengthen. A plume of mid-level moisture/lift ahead of these features will lead to scattered thunderstorms over the mountains of western MT by mid afternoon. This activity will spread into the adjacent Plains and intensify. Forecast soundings show sufficient deep-layer shear to support supercell storm structures capable of large hail and damaging wind gusts through the afternoon and evening. ...AZ... A weak upper low is present this morning over northern Mexico tracking slowly westward. Enhanced easterly mid level winds around the northern periphery of the low are spreading westward across AZ today. A few clusters of thunderstorms are likely to form over the mountains of eastern AZ and propagate westward through the evening into the lower deserts. This pattern appears favorable for a more organized damaging wind event across parts of AZ, although the details of thunderstorm coverage/intensity over the higher terrain of eastern AZ will help dictate the overall threat later today. ...Carolinas... TS Debby remains over southeast GA, with bands of offshore thunderstorms tracking inland along the coasts of SC/southeast NC. Sufficient low-level shear will remain in place through the afternoon and evening for a risk of transient mesocyclones and a few tornadoes through the forecast period. ..Hart/Halbert/Lyons.. 08/06/2024 Read more

SPC Aug 6, 2024 1630 UTC Day 1 Convective Outlook

1 year ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Tue Aug 06 2024 Valid 061630Z - 071200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN OHIO ACROSS MUCH OF PENNSYLVANIA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF MONTANA INTO WESTERN SOUTH DAKOTA...THE COASTAL CAROLINAS...AND ACROSS PARTS OF ARIZONA... ...SUMMARY... Severe thunderstorms capable of damaging winds, hail, and isolated tornadoes will affect areas from northern Ohio into New Jersey today. Others areas of concerns include much of Montana into western South Dakota, the coastal Carolinas, and across parts of Arizona. ...OH to NJ... Recent water vapor loop shows a well-defined and fast-moving shortwave trough over Lower MI. This feature will track eastward across parts of OH/PA/NY today, along a corridor of strong heating/destabilization. This will lead to multiple clusters of intense convection capable of damaging winds, large hail. Winds aloft are seasonably strong, but low-level winds are relatively weak. Some increase in low-level winds/shear may occur later today, posing some risk of isolated tornadoes as well. ...MT/WY/SD... Multiple minor shortwave troughs will rotate through the top of the ridge over MT/WY today, while mid-level winds strengthen. A plume of mid-level moisture/lift ahead of these features will lead to scattered thunderstorms over the mountains of western MT by mid afternoon. This activity will spread into the adjacent Plains and intensify. Forecast soundings show sufficient deep-layer shear to support supercell storm structures capable of large hail and damaging wind gusts through the afternoon and evening. ...AZ... A weak upper low is present this morning over northern Mexico tracking slowly westward. Enhanced easterly mid level winds around the northern periphery of the low are spreading westward across AZ today. A few clusters of thunderstorms are likely to form over the mountains of eastern AZ and propagate westward through the evening into the lower deserts. This pattern appears favorable for a more organized damaging wind event across parts of AZ, although the details of thunderstorm coverage/intensity over the higher terrain of eastern AZ will help dictate the overall threat later today. ...Carolinas... TS Debby remains over southeast GA, with bands of offshore thunderstorms tracking inland along the coasts of SC/southeast NC. Sufficient low-level shear will remain in place through the afternoon and evening for a risk of transient mesocyclones and a few tornadoes through the forecast period. ..Hart/Halbert/Lyons.. 08/06/2024 Read more

SPC Aug 6, 2024 1630 UTC Day 1 Convective Outlook

1 year ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Tue Aug 06 2024 Valid 061630Z - 071200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN OHIO ACROSS MUCH OF PENNSYLVANIA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF MONTANA INTO WESTERN SOUTH DAKOTA...THE COASTAL CAROLINAS...AND ACROSS PARTS OF ARIZONA... ...SUMMARY... Severe thunderstorms capable of damaging winds, hail, and isolated tornadoes will affect areas from northern Ohio into New Jersey today. Others areas of concerns include much of Montana into western South Dakota, the coastal Carolinas, and across parts of Arizona. ...OH to NJ... Recent water vapor loop shows a well-defined and fast-moving shortwave trough over Lower MI. This feature will track eastward across parts of OH/PA/NY today, along a corridor of strong heating/destabilization. This will lead to multiple clusters of intense convection capable of damaging winds, large hail. Winds aloft are seasonably strong, but low-level winds are relatively weak. Some increase in low-level winds/shear may occur later today, posing some risk of isolated tornadoes as well. ...MT/WY/SD... Multiple minor shortwave troughs will rotate through the top of the ridge over MT/WY today, while mid-level winds strengthen. A plume of mid-level moisture/lift ahead of these features will lead to scattered thunderstorms over the mountains of western MT by mid afternoon. This activity will spread into the adjacent Plains and intensify. Forecast soundings show sufficient deep-layer shear to support supercell storm structures capable of large hail and damaging wind gusts through the afternoon and evening. ...AZ... A weak upper low is present this morning over northern Mexico tracking slowly westward. Enhanced easterly mid level winds around the northern periphery of the low are spreading westward across AZ today. A few clusters of thunderstorms are likely to form over the mountains of eastern AZ and propagate westward through the evening into the lower deserts. This pattern appears favorable for a more organized damaging wind event across parts of AZ, although the details of thunderstorm coverage/intensity over the higher terrain of eastern AZ will help dictate the overall threat later today. ...Carolinas... TS Debby remains over southeast GA, with bands of offshore thunderstorms tracking inland along the coasts of SC/southeast NC. Sufficient low-level shear will remain in place through the afternoon and evening for a risk of transient mesocyclones and a few tornadoes through the forecast period. ..Hart/Halbert/Lyons.. 08/06/2024 Read more

SPC Aug 6, 2024 1630 UTC Day 1 Convective Outlook

1 year ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Tue Aug 06 2024 Valid 061630Z - 071200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN OHIO ACROSS MUCH OF PENNSYLVANIA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF MONTANA INTO WESTERN SOUTH DAKOTA...THE COASTAL CAROLINAS...AND ACROSS PARTS OF ARIZONA... ...SUMMARY... Severe thunderstorms capable of damaging winds, hail, and isolated tornadoes will affect areas from northern Ohio into New Jersey today. Others areas of concerns include much of Montana into western South Dakota, the coastal Carolinas, and across parts of Arizona. ...OH to NJ... Recent water vapor loop shows a well-defined and fast-moving shortwave trough over Lower MI. This feature will track eastward across parts of OH/PA/NY today, along a corridor of strong heating/destabilization. This will lead to multiple clusters of intense convection capable of damaging winds, large hail. Winds aloft are seasonably strong, but low-level winds are relatively weak. Some increase in low-level winds/shear may occur later today, posing some risk of isolated tornadoes as well. ...MT/WY/SD... Multiple minor shortwave troughs will rotate through the top of the ridge over MT/WY today, while mid-level winds strengthen. A plume of mid-level moisture/lift ahead of these features will lead to scattered thunderstorms over the mountains of western MT by mid afternoon. This activity will spread into the adjacent Plains and intensify. Forecast soundings show sufficient deep-layer shear to support supercell storm structures capable of large hail and damaging wind gusts through the afternoon and evening. ...AZ... A weak upper low is present this morning over northern Mexico tracking slowly westward. Enhanced easterly mid level winds around the northern periphery of the low are spreading westward across AZ today. A few clusters of thunderstorms are likely to form over the mountains of eastern AZ and propagate westward through the evening into the lower deserts. This pattern appears favorable for a more organized damaging wind event across parts of AZ, although the details of thunderstorm coverage/intensity over the higher terrain of eastern AZ will help dictate the overall threat later today. ...Carolinas... TS Debby remains over southeast GA, with bands of offshore thunderstorms tracking inland along the coasts of SC/southeast NC. Sufficient low-level shear will remain in place through the afternoon and evening for a risk of transient mesocyclones and a few tornadoes through the forecast period. ..Hart/Halbert/Lyons.. 08/06/2024 Read more

SPC Aug 6, 2024 1630 UTC Day 1 Convective Outlook

1 year ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Tue Aug 06 2024 Valid 061630Z - 071200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN OHIO ACROSS MUCH OF PENNSYLVANIA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF MONTANA INTO WESTERN SOUTH DAKOTA...THE COASTAL CAROLINAS...AND ACROSS PARTS OF ARIZONA... ...SUMMARY... Severe thunderstorms capable of damaging winds, hail, and isolated tornadoes will affect areas from northern Ohio into New Jersey today. Others areas of concerns include much of Montana into western South Dakota, the coastal Carolinas, and across parts of Arizona. ...OH to NJ... Recent water vapor loop shows a well-defined and fast-moving shortwave trough over Lower MI. This feature will track eastward across parts of OH/PA/NY today, along a corridor of strong heating/destabilization. This will lead to multiple clusters of intense convection capable of damaging winds, large hail. Winds aloft are seasonably strong, but low-level winds are relatively weak. Some increase in low-level winds/shear may occur later today, posing some risk of isolated tornadoes as well. ...MT/WY/SD... Multiple minor shortwave troughs will rotate through the top of the ridge over MT/WY today, while mid-level winds strengthen. A plume of mid-level moisture/lift ahead of these features will lead to scattered thunderstorms over the mountains of western MT by mid afternoon. This activity will spread into the adjacent Plains and intensify. Forecast soundings show sufficient deep-layer shear to support supercell storm structures capable of large hail and damaging wind gusts through the afternoon and evening. ...AZ... A weak upper low is present this morning over northern Mexico tracking slowly westward. Enhanced easterly mid level winds around the northern periphery of the low are spreading westward across AZ today. A few clusters of thunderstorms are likely to form over the mountains of eastern AZ and propagate westward through the evening into the lower deserts. This pattern appears favorable for a more organized damaging wind event across parts of AZ, although the details of thunderstorm coverage/intensity over the higher terrain of eastern AZ will help dictate the overall threat later today. ...Carolinas... TS Debby remains over southeast GA, with bands of offshore thunderstorms tracking inland along the coasts of SC/southeast NC. Sufficient low-level shear will remain in place through the afternoon and evening for a risk of transient mesocyclones and a few tornadoes through the forecast period. ..Hart/Halbert/Lyons.. 08/06/2024 Read more

SPC MD 1842

1 year ago
MD 1842 CONCERNING SEVERE POTENTIAL...WATCH LIKELY FOR PORTIONS OF NORTHEAST OHIO INTO CENTRAL PENNSYLVANIA
Mesoscale Discussion 1842 NWS Storm Prediction Center Norman OK 0959 AM CDT Tue Aug 06 2024 Areas affected...portions of northeast Ohio into central Pennsylvania Concerning...Severe potential...Watch likely Valid 061459Z - 061630Z Probability of Watch Issuance...80 percent SUMMARY...The severe threat should increase through early afternoon. Multiple rounds of storms are possible, with damaging gusts as the main threat, though a couple of tornadoes are also possible. A WW issuance will eventually be needed. DISCUSSION...Multiple rounds of thunderstorms are percolating in intensity as they traverse a pronounced west-to-east oriented baroclinic boundary positioned from eastern OH into central PA. With continued surface heating and the approach of a 500 mb vort max over the Great Lakes, storms should continue to increase in coverage and intensity into early afternoon. 40+ kts of effective bulk shear, driven by strengthening 700-500 mb flow approaching from the west, will support organized updrafts amid 1500-2000 J/kg MLCAPE. More discrete storms could become supercellular, posing the threat for damaging gusts and perhaps a couple of tornadoes or instances of large hail. It is also possible that an MCS (perhaps even a bow echo) could develop over central PA later today, which could support a corridor of narrow but focused damaging gusts along the baroclinic boundary. A WW issuance will likely be needed in the next couple of hours to address the increasing severe threat. ..Squitieri/Hart.. 08/06/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...PHI...CTP...PBZ...CLE... LAT...LON 41498280 41448208 41728118 41737968 41347696 40887620 40437635 40177689 40247830 40398002 40748142 40948220 41058278 41498280 Read more

SPC Tornado Watch 604 Status Reports

1 year ago
WW 0604 Status Updates
STATUS REPORT ON WW 604 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WNW FDY TO 15 NNW TOL TO 40 SE DTW. WW 604 WILL BE ALLOWED TO EXPIRE AT 061900Z. ..SQUITIERI..08/06/24 ATTN...WFO...IWX...GRR...DTX...CLE... STATUS REPORT FOR WT 604 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS OHC095-123-143-147-173-061900- OH . OHIO COUNTIES INCLUDED ARE LUCAS OTTAWA SANDUSKY SENECA WOOD LEZ142-143-163-061900- CW . ADJACENT COASTAL WATERS INCLUDED ARE MAUMEE BAY TO RENO BEACH OH RENO BEACH TO THE ISLANDS OH RENO BEACH TO THE ISLANDS OH BEYOND 5NM OFF SHORELINE TO US-CANADIAN BORDER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

SPC Tornado Watch 604 Status Reports

1 year ago
WW 0604 Status Updates
STATUS REPORT ON WW 604 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WNW FDY TO 15 NNW TOL TO 40 SE DTW. WW 604 WILL BE ALLOWED TO EXPIRE AT 061900Z. ..SQUITIERI..08/06/24 ATTN...WFO...IWX...GRR...DTX...CLE... STATUS REPORT FOR WT 604 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS OHC095-123-143-147-173-061900- OH . OHIO COUNTIES INCLUDED ARE LUCAS OTTAWA SANDUSKY SENECA WOOD LEZ142-143-163-061900- CW . ADJACENT COASTAL WATERS INCLUDED ARE MAUMEE BAY TO RENO BEACH OH RENO BEACH TO THE ISLANDS OH RENO BEACH TO THE ISLANDS OH BEYOND 5NM OFF SHORELINE TO US-CANADIAN BORDER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

SPC Tornado Watch 604 Status Reports

1 year ago
WW 0604 Status Updates
STATUS REPORT ON WW 604 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WNW FDY TO 15 NNW TOL TO 40 SE DTW. WW 604 WILL BE ALLOWED TO EXPIRE AT 061900Z. ..SQUITIERI..08/06/24 ATTN...WFO...IWX...GRR...DTX...CLE... STATUS REPORT FOR WT 604 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS OHC095-123-143-147-173-061900- OH . OHIO COUNTIES INCLUDED ARE LUCAS OTTAWA SANDUSKY SENECA WOOD LEZ142-143-163-061900- CW . ADJACENT COASTAL WATERS INCLUDED ARE MAUMEE BAY TO RENO BEACH OH RENO BEACH TO THE ISLANDS OH RENO BEACH TO THE ISLANDS OH BEYOND 5NM OFF SHORELINE TO US-CANADIAN BORDER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

SPC Tornado Watch 604 Status Reports

1 year ago
WW 0604 Status Updates
STATUS REPORT ON WW 604 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WNW FDY TO 15 NNW TOL TO 40 SE DTW. WW 604 WILL BE ALLOWED TO EXPIRE AT 061900Z. ..SQUITIERI..08/06/24 ATTN...WFO...IWX...GRR...DTX...CLE... STATUS REPORT FOR WT 604 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS OHC095-123-143-147-173-061900- OH . OHIO COUNTIES INCLUDED ARE LUCAS OTTAWA SANDUSKY SENECA WOOD LEZ142-143-163-061900- CW . ADJACENT COASTAL WATERS INCLUDED ARE MAUMEE BAY TO RENO BEACH OH RENO BEACH TO THE ISLANDS OH RENO BEACH TO THE ISLANDS OH BEYOND 5NM OFF SHORELINE TO US-CANADIAN BORDER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

SPC Tornado Watch 604 Status Reports

1 year ago
WW 0604 Status Updates
STATUS REPORT ON WW 604 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WNW FDY TO 15 NNW TOL TO 40 SE DTW. WW 604 WILL BE ALLOWED TO EXPIRE AT 061900Z. ..SQUITIERI..08/06/24 ATTN...WFO...IWX...GRR...DTX...CLE... STATUS REPORT FOR WT 604 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS OHC095-123-143-147-173-061900- OH . OHIO COUNTIES INCLUDED ARE LUCAS OTTAWA SANDUSKY SENECA WOOD LEZ142-143-163-061900- CW . ADJACENT COASTAL WATERS INCLUDED ARE MAUMEE BAY TO RENO BEACH OH RENO BEACH TO THE ISLANDS OH RENO BEACH TO THE ISLANDS OH BEYOND 5NM OFF SHORELINE TO US-CANADIAN BORDER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

SPC Tornado Watch 604 Status Reports

1 year ago
WW 0604 Status Updates
STATUS REPORT ON WW 604 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WNW FDY TO 15 NNW TOL TO 40 SE DTW. WW 604 WILL BE ALLOWED TO EXPIRE AT 061900Z. ..SQUITIERI..08/06/24 ATTN...WFO...IWX...GRR...DTX...CLE... STATUS REPORT FOR WT 604 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS OHC095-123-143-147-173-061900- OH . OHIO COUNTIES INCLUDED ARE LUCAS OTTAWA SANDUSKY SENECA WOOD LEZ142-143-163-061900- CW . ADJACENT COASTAL WATERS INCLUDED ARE MAUMEE BAY TO RENO BEACH OH RENO BEACH TO THE ISLANDS OH RENO BEACH TO THE ISLANDS OH BEYOND 5NM OFF SHORELINE TO US-CANADIAN BORDER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

SPC Tornado Watch 604

1 year ago
WW 604 TORNADO IN MI OH LE 061205Z - 061900Z
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 604 NWS Storm Prediction Center Norman OK 805 AM EDT Tue Aug 6 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Extreme northeastern Indiana Southern Lower Michigan Northwestern Ohio Lake Erie * Effective this Tuesday morning and afternoon from 805 AM until 300 PM EDT. * Primary threats include... A couple tornadoes possible Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...A small cluster of thunderstorms -- including a strong supercell that has intensified over southwestern Lower MI, should move east-southeastward along a baroclinic zone through the remainder of the morning. This environment will maintain enough vertical shear for tornado potential, as well as some potential increase in instability. Upscale growth into a damaging-wind- producing bow or cluster also is possible. The tornado watch area is approximately along and 30 statute miles north and south of a line from 15 miles southwest of Kalamazoo MI to 45 miles east of Toledo OH. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU4). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. && OTHER WATCH INFORMATION...CONTINUE...WW 603... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 28030. ...Edwards Read more
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