SPC – No MDs are in effect as of Thu Nov 21 09:49:01 UTC 2024
No Mesoscale Discussions are in effect as of Thu Nov 21 09:49:01 UTC 2024.
SPC Nov 21, 2024 0830 UTC Day 3 Severe Thunderstorm Outlook
SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0148 AM CST Thu Nov 21 2024 Valid 231200Z - 241200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms appear unlikely across the USA on Saturday. ...Synopsis... A temporary/weakening upper ridge will exist over the Plains, with a departing trough over the Northeast and a broad region of west/southwest flow aloft over the West. By 12Z Sunday, this ridge will all but disappear due in part to an upper wave from MT into ND, and continued height falls across the West. The beginnings of moisture return will
SPC Nov 21, 2024 0700 UTC Day 2 Convective Outlook
SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1212 AM CST Thu Nov 21 2024 Valid 221200Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... A few thunderstorms are possible along the Pacific Northwest Coast on Friday. ...Synopsis... A large, deep upper low will exist over the northeast Friday morning, and will gradually weaken as it drifts east through the period. Meanwhile, an upper ridge will slowly shift east from the Rockies into the Plains, while yet another trough pushes across the Pacific Northwest region late. Substantial northwest surface winds will maintain relatively
SPC Day 2 Fire Weather Outlook
SPC Day 2 Fire Weather Outlook Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1151 PM CST Wed Nov 20 2024 Valid 221200Z - 231200Z ...NO CRITICAL AREAS... ...Synopsis... A similar upper-level pattern to Thursday will again be present on Friday. The strong upper low will continue east and a complex surface low evolution will occur off the Mid-Atlantic/New England coast. Fire weather conditions are expected to be minimal for most areas. Northern into central Florida will again be dry. Temperature will be a bit cooler and RH will be a bit higher. Boundary layer mixing will
SPC Day 1 Fire Weather Outlook
SPC Day 1 Fire Weather Outlook Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1150 PM CST Wed Nov 20 2024 Valid 211200Z - 221200Z ...Synopsis... With a strong upper low over the lower Great Lakes region, strong flow aloft will overspread portions of the Southeast into Florida. A deepening low east of the DelMarVa will promote enhanced surface wind behind the cold front. With minimal precipitation falling over North Florida, where fuels are quite dry for this time of year, a period of elevated fire weather is expected. Winds of 10-15 mph and RH perhaps near
SPC Nov 21, 2024 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1118 PM CST Wed Nov 20 2024 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... A few thunderstorms are possible across southern New England Thursday morning. ...Southern New England... Strong upper low will shift southeast from the Great Lakes into the upper Ohio Valley by late afternoon. This evolution will encourage low-level warm advection across southern New England as a surface low repositions itself off the middle Atlantic coast, south of Long Island. Forecast soundings suggest weak elevated buoyancy will develop north of