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This is an automated feed from the Storm Prediction Center that post the following products with images:
- Tornado/Severe Thunderstorm Watches - Watch number and the link to the watch page and watch status page if issued.
- Mesoscale Discussions - MD number, images, and link to page
- Convective Outlooks - Day 1, 2, 3, and 4-8
- Fire Weather Outlooks - 1,2, and 3-8
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SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0653 AM CST Fri Dec 22 2023 Valid 221300Z - 231200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN ARIZONA... ...SUMMARY... Isolated large hail and strong-severe gusts are possible from midday into evening across parts of southern Arizona. ...Synopsis... A closed, mid/upper-level cyclone was apparent in moisture-channel imagery offshore from southern CA and northern Baja -- centered about 200-225 nm west-southwest of SAN. Separately, a strong, northern-stream shortwave trough was evident just offshore from the Pacific Northwest. The northern…
Last reply by NorthGeorgiaWX, -
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SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0653 AM CST Fri Dec 22 2023 Valid 221300Z - 231200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN ARIZONA... ...SUMMARY... Isolated large hail and strong-severe gusts are possible from midday into evening across parts of southern Arizona. ...Synopsis... A closed, mid/upper-level cyclone was apparent in moisture-channel imagery offshore from southern CA and northern Baja -- centered about 200-225 nm west-southwest of SAN. Separately, a strong, northern-stream shortwave trough was evident just offshore from the Pacific Northwest. The northern…
Last reply by NorthGeorgiaWX, -
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SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0653 AM CST Fri Dec 22 2023 Valid 221300Z - 231200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN ARIZONA... ...SUMMARY... Isolated large hail and strong-severe gusts are possible from midday into evening across parts of southern Arizona. ...Synopsis... A closed, mid/upper-level cyclone was apparent in moisture-channel imagery offshore from southern CA and northern Baja -- centered about 200-225 nm west-southwest of SAN. Separately, a strong, northern-stream shortwave trough was evident just offshore from the Pacific Northwest. The northern…
Last reply by NorthGeorgiaWX, -
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Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0251 AM CST Fri Dec 22 2023 Valid 251200Z - 301200Z ...DISCUSSION... Medium-range forecast guidance is in fairly good agreement for much of the Day 4-8 period. General consensus is that a closed upper low will develop over the Midwest and gradually shift east/northeast toward the Great Lakes with time. Large-scale upper troughing will persist east of the Mississippi River through Day 8/Fri. At the same time, an upper ridge will develop and shift east across the western half of the CONUS. At the surface, low pressure and attendant cold front will develop east in tandem with the upp…
Last reply by NorthGeorgiaWX, -
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Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0251 AM CST Fri Dec 22 2023 Valid 251200Z - 301200Z ...DISCUSSION... Medium-range forecast guidance is in fairly good agreement for much of the Day 4-8 period. General consensus is that a closed upper low will develop over the Midwest and gradually shift east/northeast toward the Great Lakes with time. Large-scale upper troughing will persist east of the Mississippi River through Day 8/Fri. At the same time, an upper ridge will develop and shift east across the western half of the CONUS. At the surface, low pressure and attendant cold front will develop east in tandem with the upp…
Last reply by NorthGeorgiaWX, -
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Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0251 AM CST Fri Dec 22 2023 Valid 251200Z - 301200Z ...DISCUSSION... Medium-range forecast guidance is in fairly good agreement for much of the Day 4-8 period. General consensus is that a closed upper low will develop over the Midwest and gradually shift east/northeast toward the Great Lakes with time. Large-scale upper troughing will persist east of the Mississippi River through Day 8/Fri. At the same time, an upper ridge will develop and shift east across the western half of the CONUS. At the surface, low pressure and attendant cold front will develop east in tandem with the upp…
Last reply by NorthGeorgiaWX, -
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Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0251 AM CST Fri Dec 22 2023 Valid 251200Z - 301200Z ...DISCUSSION... Medium-range forecast guidance is in fairly good agreement for much of the Day 4-8 period. General consensus is that a closed upper low will develop over the Midwest and gradually shift east/northeast toward the Great Lakes with time. Large-scale upper troughing will persist east of the Mississippi River through Day 8/Fri. At the same time, an upper ridge will develop and shift east across the western half of the CONUS. At the surface, low pressure and attendant cold front will develop east in tandem with the upp…
Last reply by NorthGeorgiaWX, -
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SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0152 AM CST Fri Dec 22 2023 Valid 241200Z - 251200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorm potential appears low on Sunday. ...Southern Plains to Lower MS Valley... An upper trough will pivot east across the southern Plains toward the Ozarks and Lower MS Valley on Sunday. At the surface, a cold front will develop southeast across the central and southern Plains during the afternoon/evening, with a Pacific front shifting east across central TX early in the day ahead of the synoptic front. A line and/or clusters of thunderstorms will l…
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SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0152 AM CST Fri Dec 22 2023 Valid 241200Z - 251200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorm potential appears low on Sunday. ...Southern Plains to Lower MS Valley... An upper trough will pivot east across the southern Plains toward the Ozarks and Lower MS Valley on Sunday. At the surface, a cold front will develop southeast across the central and southern Plains during the afternoon/evening, with a Pacific front shifting east across central TX early in the day ahead of the synoptic front. A line and/or clusters of thunderstorms will l…
Last reply by NorthGeorgiaWX, -
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SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1230 AM CST Fri Dec 22 2023 Valid 231200Z - 241200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE SOUTHERN HIGH PLAINS SATURDAY AFTERNOON AND EVENING... ...SUMMARY... Isolated severe thunderstorms producing hail are possible across the southern High Plains Saturday afternoon and evening. ...Southern High Plains... A large-scale upper trough will extend from the Canadian Rockies to northern Mexico on Saturday. Within the broader region of upper troughing, a closed low over AZ will weaken as the southern branch of the trough shifts east across t…
Last reply by NorthGeorgiaWX, -
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SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0657 PM CST Thu Dec 21 2023 Valid 220100Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms remain possible tonight across parts of southern California and Arizona, and also from north Oklahoma into southeast Kansas. Severe thunderstorms are not expected. ...Synopsis... A deep-layer cyclone off of the southern CA/Baja coasts is forecast to move eastward tonight. Most thunderstorm activity will likely remain offshore tonight in closer proximity to the low, but some threat for isolated thunderstorms will continue across near coastal a…
Last reply by NorthGeorgiaWX, -
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SPC Day 3-8 Fire Weather Outlook Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0250 PM CST Thu Dec 21 2023 Valid 231200Z - 291200Z Highly amplified mid-level flow is expected over the lower 48 through the extended forecast period. An upper trough over the Desert Southwest is forecast to merge with a second western US shortwave trough over the southern Rockies early this weekend. Emerging into a broad and deep upper low over the central CONUS, cool and unsettled weather is expected through early next week. At the surface, a cold front, and prolonged period of northwesterly surface flow, is expected over the southern and central high Pla…
Last reply by NorthGeorgiaWX, -
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SPC Day 3-8 Fire Weather Outlook Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0250 PM CST Thu Dec 21 2023 Valid 231200Z - 291200Z Highly amplified mid-level flow is expected over the lower 48 through the extended forecast period. An upper trough over the Desert Southwest is forecast to merge with a second western US shortwave trough over the southern Rockies early this weekend. Emerging into a broad and deep upper low over the central CONUS, cool and unsettled weather is expected through early next week. At the surface, a cold front, and prolonged period of northwesterly surface flow, is expected over the southern and central high Pla…
Last reply by NorthGeorgiaWX, -
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SPC Day 3-8 Fire Weather Outlook Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0250 PM CST Thu Dec 21 2023 Valid 231200Z - 291200Z Highly amplified mid-level flow is expected over the lower 48 through the extended forecast period. An upper trough over the Desert Southwest is forecast to merge with a second western US shortwave trough over the southern Rockies early this weekend. Emerging into a broad and deep upper low over the central CONUS, cool and unsettled weather is expected through early next week. At the surface, a cold front, and prolonged period of northwesterly surface flow, is expected over the southern and central high Pla…
Last reply by NorthGeorgiaWX, -
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SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0150 PM CST Thu Dec 21 2023 Valid 212000Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible today across parts of southern California, southern Arizona and from north Texas into southeast Kansas. Severe thunderstorms are not expected. ...20Z Update... Minor changes have been made to the general thunderstorm area across southern CA based on recent observational and short-term guidance trends. Severe thunderstorms continue to appear unlikely along the southern CA Coast owing to a dearth of boundary-layer instability. ..G…
Last reply by NorthGeorgiaWX, -
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SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0150 PM CST Thu Dec 21 2023 Valid 212000Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible today across parts of southern California, southern Arizona and from north Texas into southeast Kansas. Severe thunderstorms are not expected. ...20Z Update... Minor changes have been made to the general thunderstorm area across southern CA based on recent observational and short-term guidance trends. Severe thunderstorms continue to appear unlikely along the southern CA Coast owing to a dearth of boundary-layer instability. ..G…
Last reply by NorthGeorgiaWX, -
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SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0150 PM CST Thu Dec 21 2023 Valid 212000Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible today across parts of southern California, southern Arizona and from north Texas into southeast Kansas. Severe thunderstorms are not expected. ...20Z Update... Minor changes have been made to the general thunderstorm area across southern CA based on recent observational and short-term guidance trends. Severe thunderstorms continue to appear unlikely along the southern CA Coast owing to a dearth of boundary-layer instability. ..G…
Last reply by NorthGeorgiaWX, -
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SPC Day 2 Fire Weather Outlook Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0101 PM CST Thu Dec 21 2023 Valid 221200Z - 231200Z ...NO CRITICAL AREAS... No changes, critical fire-weather conditions appear unlikely over the CONUS Friday. ..Lyons.. 12/21/2023 .PREV DISCUSSION... /ISSUED 0102 AM CST Thu Dec 21 2023/ ...Synopsis... Multiple mid-level troughs will traverse the Intermountain West, encouraging the continuance of surface lee-troughing and chances for rain over the Mississippi Valley as well as parts of the Southwest. Over the rest of the CONUS, weak surface winds or cool temperatures will mitigate significant wildfire-spread…
Last reply by NorthGeorgiaWX, -
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SPC Day 2 Fire Weather Outlook Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0101 PM CST Thu Dec 21 2023 Valid 221200Z - 231200Z ...NO CRITICAL AREAS... No changes, critical fire-weather conditions appear unlikely over the CONUS Friday. ..Lyons.. 12/21/2023 .PREV DISCUSSION... /ISSUED 0102 AM CST Thu Dec 21 2023/ ...Synopsis... Multiple mid-level troughs will traverse the Intermountain West, encouraging the continuance of surface lee-troughing and chances for rain over the Mississippi Valley as well as parts of the Southwest. Over the rest of the CONUS, weak surface winds or cool temperatures will mitigate significant wildfire-spread…
Last reply by NorthGeorgiaWX, -
- 0 replies
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SPC Day 2 Fire Weather Outlook Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0101 PM CST Thu Dec 21 2023 Valid 221200Z - 231200Z ...NO CRITICAL AREAS... No changes, critical fire-weather conditions appear unlikely over the CONUS Friday. ..Lyons.. 12/21/2023 .PREV DISCUSSION... /ISSUED 0102 AM CST Thu Dec 21 2023/ ...Synopsis... Multiple mid-level troughs will traverse the Intermountain West, encouraging the continuance of surface lee-troughing and chances for rain over the Mississippi Valley as well as parts of the Southwest. Over the rest of the CONUS, weak surface winds or cool temperatures will mitigate significant wildfire-spread…
Last reply by NorthGeorgiaWX, -
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SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1126 AM CST Thu Dec 21 2023 Valid 221200Z - 231200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN ARIZONA AND FAR SOUTHWEST NEW MEXICO... ...SUMMARY... Thunderstorms will be possible Friday from southern California across much of the Southwest. Some hail and strong/gusty winds may occur over parts of southern Arizona and far southwest New Mexico Friday afternoon and evening. ...Southwest... A closed upper low initially centered off the coast of southern CA will move eastward Friday across the northern Baja Peninsula and lower CO River Valley.…
Last reply by NorthGeorgiaWX, -
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SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1126 AM CST Thu Dec 21 2023 Valid 221200Z - 231200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN ARIZONA AND FAR SOUTHWEST NEW MEXICO... ...SUMMARY... Thunderstorms will be possible Friday from southern California across much of the Southwest. Some hail and strong/gusty winds may occur over parts of southern Arizona and far southwest New Mexico Friday afternoon and evening. ...Southwest... A closed upper low initially centered off the coast of southern CA will move eastward Friday across the northern Baja Peninsula and lower CO River Valley.…
Last reply by NorthGeorgiaWX, -
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SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1126 AM CST Thu Dec 21 2023 Valid 221200Z - 231200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN ARIZONA AND FAR SOUTHWEST NEW MEXICO... ...SUMMARY... Thunderstorms will be possible Friday from southern California across much of the Southwest. Some hail and strong/gusty winds may occur over parts of southern Arizona and far southwest New Mexico Friday afternoon and evening. ...Southwest... A closed upper low initially centered off the coast of southern CA will move eastward Friday across the northern Baja Peninsula and lower CO River Valley.…
Last reply by NorthGeorgiaWX, -
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SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1126 AM CST Thu Dec 21 2023 Valid 221200Z - 231200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN ARIZONA AND FAR SOUTHWEST NEW MEXICO... ...SUMMARY... Thunderstorms will be possible Friday from southern California across much of the Southwest. Some hail and strong/gusty winds may occur over parts of southern Arizona and far southwest New Mexico Friday afternoon and evening. ...Southwest... A closed upper low initially centered off the coast of southern CA will move eastward Friday across the northern Baja Peninsula and lower CO River Valley.…
Last reply by NorthGeorgiaWX, -
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SPC Day 1 Fire Weather Outlook Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1041 AM CST Thu Dec 21 2023 Valid 211700Z - 221200Z ...NO CRITICAL AREAS... No changes. Increasing precipitation chances, combined with modest winds and mild temperatures will keep fire-weather concerns minimal. ..Lyons.. 12/21/2023 .PREV DISCUSSION... /ISSUED 0101 AM CST Thu Dec 21 2023/ ...Synopsis... Multiple mid-level troughs will traverse the western and central U.S. today, promoting appreciable precipitation accumulations over California and the Southern Plains. Meanwhile, dry air will linger over the Tennessee Valley into the Southeast. However, surfa…
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