SPC Feb 20, 2025 2000 UTC Day 1 Convective Outlook
SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0100 PM CST Thu Feb 20 2025 Valid 202000Z - 211200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast through tonight across the contiguous United States. ...20Z Update... The previous forecast (see below) remains on track. ..Squitieri.. 02/20/2025 .PREV DISCUSSION... /ISSUED 1000 AM CST Thu Feb 20 2025/ ...Synopsis... A large area of surface high pressure resides over the central and eastern United States and is currently centered over the central Great Plains. Dry/cold offshore flow into the Gulf and Atlantic will maintain an
Hydrologic Outlook issued February 20 at 3:09PM PST by NWS Seattle WA
ESFSEW A series of storms will begin to impact western Washington on Friday and continue through Tuesday. The next storm on Saturday will have heavy rain at times as will a third storm right on its heels Sunday. Precipitation amounts could be 3 to 8 inches storm total with snow levels rising above 6000 feet. With moderate temperatures now and warmer temperatures to come, this will also result in a some snow melt at low to mid elevations. These factors will combine to result in a potential for river flooding. At this time the most likely flood severity will be
Hydrologic Outlook issued February 20 at 2:46PM PST by NWS Portland OR
ESFPQR An series of frontal systems will bring heavy rainfall to northwest Oregon and southwest Washington this weekend. Rain will begin Saturday afternoon, and intensify overnight through Sunday. This will lead to rises on rivers and creeks, especially along the coast on February 22nd through the 23rd. Main stem rivers may be delayed to respond, and flooding may occur beyond this time frame. There is around a 25% chance of the Wilson River, the Grays River, and other localized quick responding coastal rivers of reaching minor flood stage on Sunday. Confidence in flooding is low as the location of heaviest
SPC Feb 20, 2025 Day 4-8 Severe Weather Outlook
Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0350 AM CST Thu Feb 20 2025 Valid 231200Z - 281200Z ...DISCUSSION... Isolated showers and thunderstorms may occur over parts of the western to central Gulf coast vicinity on Day 4/Sun in association with a weakening upper shortwave trough moving across the region. After a lull in precipitation potential around Days 5-6/Mon-Tue, thunderstorm potential may increase late in the forecast period. An upper ridge over the western U.S. will shift east across the Plains on Day 7/Wed before a deepening trough ejects across the Rockies to the
SPC Feb 20, 2025 0830 UTC Day 3 Severe Thunderstorm Outlook
SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0152 AM CST Thu Feb 20 2025 Valid 221200Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible near the middle and upper Texas coastal vicinity Saturday evening into early Sunday. ...Synopsis... An upper shortwave trough will shift east from AZ into the southern Plains on Saturday. Surface high pressure and a cool airmass will persist over the southern Plains and Gulf coast. However, increasing southwesterly midlevel flow and midlevel moistening is expected as the shortwave trough ejects eastward. Warm advection atop
Hydrologic Outlook issued February 19 at 4:42PM PST by NWS Pendleton OR
ESFPDT Synopsis: Rain and high mountain snow in the last 24 hours and multiple systems this weekend and early next week will lead to rising water levels on area streams and rivers. Rainfall amounts of 2 to 4 inches are expected in the Cascades and 1 to 2 inches in the eastern Oregon mountains. In addition, temperatures will be rising to the 40s and even lower 50s in the mountains which will lead to snow melt adding even more water to rivers and streams. At this point, the Naches River at Cliffdell is expected to barely reach action stage for
SPC Feb 19, 2025 2000 UTC Day 1 Convective Outlook
SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0140 PM CST Wed Feb 19 2025 Valid 192000Z - 201200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms remain unlikely through tonight. ...20Z Update... A linear MCS with a parallel rain shield continues to approach the western FL peninsula coastline amid modest buoyancy. A weakening trend is still expected with this line, though the anticipated coverage of lightning flashes warrants the continuance of thunder probabilities. A strong wind gust is possible with the leading edge of the MCS as it reaches the southwestern FL
SPC Feb 19, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook
SPC 1930Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0117 PM CST Wed Feb 19 2025 Valid 211200Z - 221200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Friday. ...Synopsis... On Friday a split-flow regime will exist with northwest flow from the northern Plains into the Great lakes, and a stronger belt of westerly flow from the Southwest into the Southeast. The overarching theme will continue to be stable conditions due to high pressure over the central and eastern states, though surface winds will become easterly from the Bahamas westward across the
SPC Feb 19, 2025 Day 4-8 Severe Weather Outlook
Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0252 AM CST Wed Feb 19 2025 Valid 221200Z - 271200Z ...DISCUSSION... Persistent surface high pressure across portions of the Southeast and Gulf Coast regions will result in a dearth of boundary layer moisture through at least Day 6/Mon. This will preclude much potential for thunderstorms. By the end of the period, around Days 7-8/Tue-Wed, an upper ridge over the western U.S. will weaken as it shifts east toward the Plains, owing to an upper shortwave trough developing southeast across the Rockies. This will result in lee
SPC Feb 19, 2025 0830 UTC Day 3 Severe Thunderstorm Outlook
SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0140 AM CST Wed Feb 19 2025 Valid 211200Z - 221200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Friday. ...Synopsis... Strong surface high pressure will persist across much of the CONUS on Friday. Gulf moisture will remain offshore, and the cold/stable boundary layer will preclude thunderstorm activity. ..Leitman.. 02/19/2025 Read more