SPC Jan 2, 2025 1630 UTC Day 1 Convective Outlook
SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1021 AM CST Thu Jan 02 2025 Valid 021630Z - 031200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected through tonight. ...Synopsis... In the mid levels, The general pattern is forecast to slowly amplify as weak troughing with broad cyclonic flow will persist over the eastern 2/3rds of the CONUS. At the same time, ridging will intensify over the West. This will favor increasingly strong (80-100 kts) northwesterly flow over the central US. As a result, strong high pressure at the surface is expected
SPC Jan 2, 2025 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1120 PM CST Wed Jan 01 2025 Valid 021200Z - 031200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected today. ...Discussion... Broad northwesterly flow at mid levels will maintain offshore flow along the Gulf and Atlantic coasts. With height rises expected across the southern Plains, a weak coastal boundary will be shunted a bit east across the northwestern Gulf basin. As a result, any convective threat capable of generating lightning will focus along this boundary. ..Darrow/Marsh.. 01/02/2025 Read more
SPC Jan 1, 2025 1730 UTC Day 2 Convective Outlook
SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1102 AM CST Wed Jan 01 2025 Valid 021200Z - 031200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected Thursday. ...Synopsis... Moderate to strong northwest flow aloft will exist across the CONUS on Thursday, extending from an upper ridge over the West Coast to the East Coast. As this western ridge shifts eastward, a tightening midlevel thermal gradient will develop over the Plains, with a minor trough amplification from the Mid/Lower MS Valley into the Southeast. At the surface, high pressure will maintain a
SPC Jan 1, 2025 1630 UTC Day 1 Convective Outlook
SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1021 AM CST Wed Jan 01 2025 Valid 011630Z - 021200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected through tonight. Fast zonal flow is present today over most of the CONUS, with dry and stable conditions prevailing in most areas. Isolated lightning strikes remain possible along the coast of ME for another couple of hours within a belt of strong onshore flow. This threat should end by 21z. Elsewhere, no thunderstorms are forecast for today. ..Hart/Karstens.. 01/01/2025 Read more
SPC Jan 1, 2025 0100 UTC Day 1 Convective Outlook
SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0719 PM CST Tue Dec 31 2024 Valid 010100Z - 011200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PART OF THE MID-ATLANTIC... ...SUMMARY... Isolated damaging gusts, hail and a brief tornado will be possible in parts of the Mid-Atlantic including New Jersey and southern Long Island early this evening. ...Mid-Atlantic/New Jersey/Southern Long Island... The latest water vapor imagery shows a negatively-tilted shortwave trough moving northeastward across the Mid-Atlantic and central Appalachian Mountains. At the surface, a trough is located from Maryland extending southwestward
SPC Dec 31, 2024 1730 UTC Day 2 Convective Outlook
SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1043 AM CST Tue Dec 31 2024 Valid 011200Z - 021200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected Wednesday. ...Synopsis... An upper low will be situated over northern Ontario with a broad area of lower heights across the Canadian Prairies. South of this low, a broad fetch of moderate to strong high-level flow will extend from the western US into the Southeast, with a leading wave ejecting in negative-tilt fashion across the Northeast. With time, upper ridging will occur along the West Coast.
SPC Dec 31, 2024 1630 UTC Day 1 Convective Outlook
SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1025 AM CST Tue Dec 31 2024 Valid 311630Z - 011200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FROM EASTERN KENTUCKY INTO THE MID ATLANTIC REGION.... ...SUMMARY... Damaging to isolated marginally severe gusts, isolated large hail, and a brief tornado are possible today from the central Appalachians to parts of the Mid-Atlantic. ...KY to the Mid Atlantic Region... A potent, negatively-tilted shortwave trough will move from the upper OH Valley into NY/PA today, with an associated 80-100 knot mid-level speed
SPC Dec 31, 2024 1300 UTC Day 1 Convective Outlook
SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0657 AM CST Tue Dec 31 2024 Valid 311300Z - 011200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM THE CENTRAL APPALACHIANS TO PARTS OF THE MID-ATLANTIC... ...SUMMARY... Damaging to isolated marginally severe gusts, isolated large hail, and possibly a brief tornado, are possible today from the central Appalachians to parts of the Mid-Atlantic. ...Synopsis... In mid/upper levels, a progressive shortwave pattern will persist within a broadly cyclonic flow field covering much of the CONUS from the Rockies eastward. The most important of these
SPC Dec 31, 2024 0100 UTC Day 1 Convective Outlook
SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0656 PM CST Mon Dec 30 2024 Valid 310100Z - 311200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible tonight in parts of the mid Mississippi and lower Ohio Valleys, but no severe threat is expected. ...DISCUSSION... A shortwave trough, evident on water vapor imagery over the central U.S., will move eastward across the mid Mississippi Valley tonight. Isolated thunderstorm development is expected after midnight ahead of the trough over parts of the mid Mississippi and lower Ohio Valleys, where surface dewpoints
SPC Dec 30, 2024 1730 UTC Day 2 Convective Outlook
SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1107 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... An upper trough will pivot northeast from the Midwest toward the Mid-Atlantic/Northeast on Tuesday. A prior cold frontal passage across this region will result in limited boundary-layer moisture despite increasing low-level south/southeasterly flow ahead of a surface low. The exception will be along the immediate