SPC Dec 11, 2024 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1158 PM CST Tue Dec 10 2024 Valid 111200Z - 121200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF SOUTHERN NEW ENGLAND ALONG THE ATLANTIC COAST SOUTH TO FAR NORTHEASTERN NORTH CAROLINA... ...SUMMARY... Isolated severe thunderstorms are possible today across the East Coast States, as far north as southern New England. The most probable area for a few tornadoes and damaging winds appears to be centered on eastern North Carolina from midday onward. ...Synopsis... South of a closed low over the western
SPC Dec 10, 2024 2000 UTC Day 1 Convective Outlook
SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0157 PM CST Tue Dec 10 2024 Valid 102000Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH THIS EVENING FROM EAST-CENTRAL ALABAMA INTO WEST-CENTRAL GEORGIA... ...SUMMARY... A few strong to severe thunderstorms may affect portions of east-central Alabama into west-central Georgia through this evening. ...20Z Update... The primary change with this update was to trim the western portion of severe probabilities, where the convective line and related wind shift has progressed eastward. Ahead of the line, latest radar data has shown brief/transient
SPC Dec 10, 2024 1930 UTC Day 3 Severe Thunderstorm Outlook
SPC 1930Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 1250 PM CST Tue Dec 10 2024 Valid 121200Z - 131200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Thursday. ...Discussion... A quiescent synoptic pattern for thunderstorm activity is expected on Thursday. In the wake of a cold front pushing offshore of the entire East Coast on D2, an Arctic air mass will settle into the Upper Great Lakes. A couple lightning flashes are possible in the heaviest lake-effect snow bands immediately downstream of the Lower Great Lakes, but probabilities appear to be
SPC Dec 10, 2024 1730 UTC Day 2 Convective Outlook
SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1122 AM CST Tue Dec 10 2024 Valid 111200Z - 121200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN THE EASTERN NC VICINITY... ...SUMMARY... Isolated severe thunderstorms are possible across many of the East Coast States. The most probable area for a few tornadoes and damaging winds is centered on eastern North Carolina during Wednesday afternoon. ...Synopsis... A longwave trough will extend from south-central Canada to the northern Gulf Coast on Wednesday morning. A vigorous shortwave impulse embedded within the basal portion of the
SPC Dec 10, 2024 1630 UTC Day 1 Convective Outlook
SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1019 AM CST Tue Dec 10 2024 Valid 101630Z - 111200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH THIS EVENING FROM CENTRAL ALABAMA INTO WEST-CENTRAL GEORGIA... ...SUMMARY... A few strong to severe thunderstorms may affect portions of central Alabama into west-central Georgia through this evening. ...AL/GA... The subtropical jet extends across the Gulf Coast region today, with several subtle shortwave troughs suggested in water vapor imagery that will affect parts of FL/AL/GA. Ample low-level moisture is present across central/southern AL/GA with dewpoints in
Hydrologic Outlook issued December 10 at 11:32AM AKST by NWS Anchorage AK
ESFAFC Ice Action on Area Rivers Could Produce Some Jam Flooding Recent warm temperatures have melted portions of the ice cover across south central Alaska, causing ice movement and some ice jams. Temporary rises along area rivers and minor flooding of lowland locations are possible through Thursday, ahead of a colder airmass returning to south central Alaska. As colder air filters into by late Wednesday into Thursday, high water and ice action should subside.
SPC Dec 10, 2024 0830 UTC Day 3 Severe Thunderstorm Outlook
SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0204 AM CST Tue Dec 10 2024 Valid 121200Z - 131200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Thursday. ...Synopsis... A mid/upper cyclone is forecast to be over the Ontario/Quebec vicinity early Thursday morning, with cyclonic flow throughout its base extending from the northern/central Plains through the Northeast. This cyclone is expected to gradually shift eastward through Quebec, with the associated cyclonic flow shifting northward and eastward as well. Farther west, a low-amplitude shortwave trough is expected to progress across the Great
SPC Dec 10, 2024 0700 UTC Day 2 Convective Outlook
SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CST Tue Dec 10 2024 Valid 111200Z - 121200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM EASTERN NC INTO SOUTHERN NEW ENGLAND... ...SUMMARY... Strong to isolated severe thunderstorms are possible along and ahead of a cold front from eastern North Carolina into southern New England on Wednesday. ...Synopsis... A deep upper trough is expected to extend from central Canada southward along the length of the MS Valley into the western Gulf early Wednesday morning. A shortwave trough embedded within the base
SPC Dec 10, 2024 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1147 PM CST Mon Dec 09 2024 Valid 101200Z - 111200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS THE CENTRAL GULF COAST REGION AND INTO SOUTHWESTERN GEORGIA AND THE FLORIDA PANHANDLE... ...SUMMARY... A few strong to severe thunderstorms are possible across portions of the central Gulf Coast region into southwestern Georgia and the Florida Panhandle today. ...Synopsis... An amplifying upper trough will cross the central third of the U.S. today, taking on weak negative tilt by late in the period as it reaches
SPC Dec 9, 2024 2000 UTC Day 1 Convective Outlook
SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0144 PM CST Mon Dec 09 2024 Valid 092000Z - 101200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS SOUTHEASTERN LOUISIANA INTO SOUTHERN MISSISSIPPI... ...SUMMARY... Thunderstorms are possible from the Lower Mississippi Valley into much of the Southeast States today and tonight. Isolated strong to severe storms may affect parts of southern Louisiana and Mississippi. ...20Z Update... No changes to the ongoing forecast. Prior forecast reasoning remains valid as some destabilization has occurred in parts of southern Louisiana into southern Mississippi. The strongest storms could