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MD 0268 CONCERNING SEVERE THUNDERSTORM WATCH 65... FOR PARTS OF NWRN WA
Mesoscale Discussion 0268 NWS Storm Prediction Center Norman OK 1035 PM CDT Wed Mar 26 2025 Areas affected...Parts of nwrn WA Concerning...Severe Thunderstorm Watch 65... Valid 270335Z - 270500Z The severe weather threat for Severe Thunderstorm Watch 65 continues. SUMMARY...Widespread convection and embedded weak thunderstorm activity lingers, but the potential for severe weather appears unlikely to increase. Severe Thunderstorm Watch 65 may be allowed to expire at 9 PM PDT. DISCUSSION...Convective development, and embedded weak thunderstorm activity, persists along the western slopes of the Oregon Cascades. However, the primary cluster of thunderstorm activity is now rapidly spreading with the more favorable mid/upper forcing for ascent across and north-northwest of the Puget Sound vicinity. Locally strong surface gusts might still be possible, but thermodynamic profiles characterized by rather modest to weak mid/upper lapse rates, and more limited low-level moisture than some model guidance indicated, appear to have mitigated the severe weather threat. ..Kerr.. 03/27/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...SEW... LAT...LON 48802319 48752155 47612133 47162195 47512281 48262387 48802319 MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN Read more

WW 0065 Status Updates
STATUS REPORT ON WW 65 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SE AST TO 5 W SLE TO 45 ESE EUG. ..LYONS..03/27/25 ATTN...WFO...PQR...SEW... STATUS REPORT FOR WS 65 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ORC005-009-027-043-047-051-067-071-270440- OR . OREGON COUNTIES INCLUDED ARE CLACKAMAS COLUMBIA HOOD RIVER LINN MARION MULTNOMAH WASHINGTON YAMHILL WAC011-015-033-041-053-059-067-270440- WA . WASHINGTON COUNTIES INCLUDED ARE CLARK COWLITZ KING LEWIS PIERCE SKAMANIA THURSTON THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 65 SEVERE TSTM OR WA 262210Z - 270400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 65 NWS Storm Prediction Center Norman OK 310 PM PDT Wed Mar 26 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northwest Oregon Western Washington * Effective this Wednesday afternoon and evening from 310 PM until 900 PM PDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter likely Scattered damaging wind gusts to 70 mph possible A tornado or two possible SUMMARY...Thunderstorms are expected to develop this afternoon over parts of northwest Oregon and track north-northeastward across the watch area through early evening. Large hail and damaging wind gusts are possible in the strongest cells. The severe thunderstorm watch area is approximately along and 45 statute miles east and west of a line from 45 miles south of Salem OR to 5 miles north northwest of Seattle WA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU5). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 22030. ...Hart Read more

No Mesoscale Discussions are in effect as of Thu Mar 27 03:06:03 UTC 2025.

MD 0267 CONCERNING SEVERE THUNDERSTORM WATCH 65... FOR PORTIONS OF WA AND OR
Mesoscale Discussion 0267 NWS Storm Prediction Center Norman OK 0733 PM CDT Wed Mar 26 2025 Areas affected...portions of WA and OR Concerning...Severe Thunderstorm Watch 65... Valid 270033Z - 270200Z The severe weather threat for Severe Thunderstorm Watch 65 continues. SUMMARY...A gradual increase in storm coverage is expected over the next couple of hours in and close to WW65. Severe storms, including a couple of supercells will remain capable of damaging gusts, hail and possibly a tornado or two. DISCUSSION...As of 0030 UTC, regional radar and lightning data indicated a slow increase in convective activity across parts of the Northwest. Likely driven by the local diurnal maximum in surface heating and the arrival of ascent from the broad east Pac trough, this trend should continue over the next few hours. Around 1000 J/kg of MUCAPE and 50-60 kt of deep-layer shear from the RTX VAD are strongly supportive of organized storms, including supercells and linear clusters. Radar echo tops and lightning trends across parts of Cowlitz and Lewis counties do suggest an increase in convective intensity. This matches with recent HRRR runs that suggest a few stronger storms should evolve from northern OR, across the Columbia River Valley, and northward into western WA this evening. This would support a continued risk for damaging wind gusts given the strong lower tropospheric flow. Additionally, hail and a tornado or two will remain possible with the stronger rotating storms and any favorable terrain interactions. Thus, the severe risk continues across WW65. ..Lyons.. 03/27/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...PDT...SEW...PQR... LAT...LON 45132375 46802394 47702401 48092287 48162181 47892130 46032158 44382185 44332240 44262282 44522355 45132375 MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN Read more

WW 0065 Status Updates
STATUS REPORT ON WW 65 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..LYONS..03/27/25 ATTN...WFO...PQR...SEW... STATUS REPORT FOR WS 65 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ORC003-005-009-027-043-047-051-053-067-071-270240- OR . OREGON COUNTIES INCLUDED ARE BENTON CLACKAMAS COLUMBIA HOOD RIVER LINN MARION MULTNOMAH POLK WASHINGTON YAMHILL WAC011-015-033-041-053-059-067-270240- WA . WASHINGTON COUNTIES INCLUDED ARE CLARK COWLITZ KING LEWIS PIERCE SKAMANIA THURSTON THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0065 Status Updates
STATUS REPORT ON WW 65 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..LYONS..03/27/25 ATTN...WFO...PQR...SEW... STATUS REPORT FOR WS 65 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ORC003-005-009-027-043-047-051-053-067-071-270240- OR . OREGON COUNTIES INCLUDED ARE BENTON CLACKAMAS COLUMBIA HOOD RIVER LINN MARION MULTNOMAH POLK WASHINGTON YAMHILL WAC011-015-033-041-053-059-067-270240- WA . WASHINGTON COUNTIES INCLUDED ARE CLARK COWLITZ KING LEWIS PIERCE SKAMANIA THURSTON THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Wed Mar 26 2025 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST... ...SUMMARY... Severe thunderstorms remain possible across parts of the Pacific Northwest this evening, with supercells possible west of the Cascades across Oregon into Washington. These storms may produce large hail, perhaps a brief tornado, and severe wind gusts. ...01z Update... Deep convection has struggled to organize across western OR/WA early this evening, possibly due to extensive cloudiness. Even so, temperatures remain warm with readings in the mid 70s from Portland north into Lewis County WA. Westerly boundary-layer flow is increasing and upslope flow may be contributing to gradual uptick in convection from Clark County into central Lewis County WA. This activity is expected to grow upscale over the next few hours and wind profiles favor supercell development. If this occurs, storms will track north-northeast along the higher terrain, and large hail should develop within these storms. Latest trends suggest the greatest risk may be shifting into WA as large-scale forcing is beginning to shift into this region. Across the lower Rio Grande Valley, a lone supercell is tracking southeast along the international border over southern Starr County. Large hail has likely been noted with this storm, most likely along the Mexican side of the border. Some risk for hail will be noted with this storm for the next few hours. ..Darrow.. 03/27/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Wed Mar 26 2025 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST... ...SUMMARY... Severe thunderstorms remain possible across parts of the Pacific Northwest this evening, with supercells possible west of the Cascades across Oregon into Washington. These storms may produce large hail, perhaps a brief tornado, and severe wind gusts. ...01z Update... Deep convection has struggled to organize across western OR/WA early this evening, possibly due to extensive cloudiness. Even so, temperatures remain warm with readings in the mid 70s from Portland north into Lewis County WA. Westerly boundary-layer flow is increasing and upslope flow may be contributing to gradual uptick in convection from Clark County into central Lewis County WA. This activity is expected to grow upscale over the next few hours and wind profiles favor supercell development. If this occurs, storms will track north-northeast along the higher terrain, and large hail should develop within these storms. Latest trends suggest the greatest risk may be shifting into WA as large-scale forcing is beginning to shift into this region. Across the lower Rio Grande Valley, a lone supercell is tracking southeast along the international border over southern Starr County. Large hail has likely been noted with this storm, most likely along the Mexican side of the border. Some risk for hail will be noted with this storm for the next few hours. ..Darrow.. 03/27/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Wed Mar 26 2025 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST... ...SUMMARY... Severe thunderstorms remain possible across parts of the Pacific Northwest this evening, with supercells possible west of the Cascades across Oregon into Washington. These storms may produce large hail, perhaps a brief tornado, and severe wind gusts. ...01z Update... Deep convection has struggled to organize across western OR/WA early this evening, possibly due to extensive cloudiness. Even so, temperatures remain warm with readings in the mid 70s from Portland north into Lewis County WA. Westerly boundary-layer flow is increasing and upslope flow may be contributing to gradual uptick in convection from Clark County into central Lewis County WA. This activity is expected to grow upscale over the next few hours and wind profiles favor supercell development. If this occurs, storms will track north-northeast along the higher terrain, and large hail should develop within these storms. Latest trends suggest the greatest risk may be shifting into WA as large-scale forcing is beginning to shift into this region. Across the lower Rio Grande Valley, a lone supercell is tracking southeast along the international border over southern Starr County. Large hail has likely been noted with this storm, most likely along the Mexican side of the border. Some risk for hail will be noted with this storm for the next few hours. ..Darrow.. 03/27/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Wed Mar 26 2025 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST... ...SUMMARY... Severe thunderstorms remain possible across parts of the Pacific Northwest this evening, with supercells possible west of the Cascades across Oregon into Washington. These storms may produce large hail, perhaps a brief tornado, and severe wind gusts. ...01z Update... Deep convection has struggled to organize across western OR/WA early this evening, possibly due to extensive cloudiness. Even so, temperatures remain warm with readings in the mid 70s from Portland north into Lewis County WA. Westerly boundary-layer flow is increasing and upslope flow may be contributing to gradual uptick in convection from Clark County into central Lewis County WA. This activity is expected to grow upscale over the next few hours and wind profiles favor supercell development. If this occurs, storms will track north-northeast along the higher terrain, and large hail should develop within these storms. Latest trends suggest the greatest risk may be shifting into WA as large-scale forcing is beginning to shift into this region. Across the lower Rio Grande Valley, a lone supercell is tracking southeast along the international border over southern Starr County. Large hail has likely been noted with this storm, most likely along the Mexican side of the border. Some risk for hail will be noted with this storm for the next few hours. ..Darrow.. 03/27/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Wed Mar 26 2025 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST... ...SUMMARY... Severe thunderstorms remain possible across parts of the Pacific Northwest this evening, with supercells possible west of the Cascades across Oregon into Washington. These storms may produce large hail, perhaps a brief tornado, and severe wind gusts. ...01z Update... Deep convection has struggled to organize across western OR/WA early this evening, possibly due to extensive cloudiness. Even so, temperatures remain warm with readings in the mid 70s from Portland north into Lewis County WA. Westerly boundary-layer flow is increasing and upslope flow may be contributing to gradual uptick in convection from Clark County into central Lewis County WA. This activity is expected to grow upscale over the next few hours and wind profiles favor supercell development. If this occurs, storms will track north-northeast along the higher terrain, and large hail should develop within these storms. Latest trends suggest the greatest risk may be shifting into WA as large-scale forcing is beginning to shift into this region. Across the lower Rio Grande Valley, a lone supercell is tracking southeast along the international border over southern Starr County. Large hail has likely been noted with this storm, most likely along the Mexican side of the border. Some risk for hail will be noted with this storm for the next few hours. ..Darrow.. 03/27/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Wed Mar 26 2025 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST... ...SUMMARY... Severe thunderstorms remain possible across parts of the Pacific Northwest this evening, with supercells possible west of the Cascades across Oregon into Washington. These storms may produce large hail, perhaps a brief tornado, and severe wind gusts. ...01z Update... Deep convection has struggled to organize across western OR/WA early this evening, possibly due to extensive cloudiness. Even so, temperatures remain warm with readings in the mid 70s from Portland north into Lewis County WA. Westerly boundary-layer flow is increasing and upslope flow may be contributing to gradual uptick in convection from Clark County into central Lewis County WA. This activity is expected to grow upscale over the next few hours and wind profiles favor supercell development. If this occurs, storms will track north-northeast along the higher terrain, and large hail should develop within these storms. Latest trends suggest the greatest risk may be shifting into WA as large-scale forcing is beginning to shift into this region. Across the lower Rio Grande Valley, a lone supercell is tracking southeast along the international border over southern Starr County. Large hail has likely been noted with this storm, most likely along the Mexican side of the border. Some risk for hail will be noted with this storm for the next few hours. ..Darrow.. 03/27/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 PM CDT Wed Mar 26 2025 Valid 270100Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST... ...SUMMARY... Severe thunderstorms remain possible across parts of the Pacific Northwest this evening, with supercells possible west of the Cascades across Oregon into Washington. These storms may produce large hail, perhaps a brief tornado, and severe wind gusts. ...01z Update... Deep convection has struggled to organize across western OR/WA early this evening, possibly due to extensive cloudiness. Even so, temperatures remain warm with readings in the mid 70s from Portland north into Lewis County WA. Westerly boundary-layer flow is increasing and upslope flow may be contributing to gradual uptick in convection from Clark County into central Lewis County WA. This activity is expected to grow upscale over the next few hours and wind profiles favor supercell development. If this occurs, storms will track north-northeast along the higher terrain, and large hail should develop within these storms. Latest trends suggest the greatest risk may be shifting into WA as large-scale forcing is beginning to shift into this region. Across the lower Rio Grande Valley, a lone supercell is tracking southeast along the international border over southern Starr County. Large hail has likely been noted with this storm, most likely along the Mexican side of the border. Some risk for hail will be noted with this storm for the next few hours. ..Darrow.. 03/27/2025 Read more

WW 0065 Status Updates
STATUS REPORT ON WW 65 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..LYONS..03/26/25 ATTN...WFO...PQR...SEW... STATUS REPORT FOR WS 65 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ORC003-005-009-027-043-047-051-053-067-071-270040- OR . OREGON COUNTIES INCLUDED ARE BENTON CLACKAMAS COLUMBIA HOOD RIVER LINN MARION MULTNOMAH POLK WASHINGTON YAMHILL WAC011-015-033-041-053-059-067-270040- WA . WASHINGTON COUNTIES INCLUDED ARE CLARK COWLITZ KING LEWIS PIERCE SKAMANIA THURSTON THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

Fire activity in South Carolina continued to be above normal. To this point in March, 339 fires have burned 7,916 acres, compared to the five-year average of 290 fires burning 4,134 acres. The tally for acres burned this month does not yet include the large Horry County and Table Rock blazes which continue to burn. The Sumter Item (S.C.), March 26, 2025

No Mesoscale Discussions are in effect as of Wed Mar 26 23:49:02 UTC 2025.

Six South Carolina counties that were declared to be free of drought in February were recategorized as being in incipient drought on March 26 when the state Drought Response Committee met. Those six counties were Abbeville, Anderson, Edgefield, McCormick, Oconee and Pickens. Aiken has been free of drought since Dec. 4, but was back in drought again. Altogether, 33 counties were in incipient drought, and 13 were in normal condition. The Sumter Item (S.C.), March 26, 2025

WW 0065 Status Updates
STATUS REPORT ON WW 65 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..LYONS..03/26/25 ATTN...WFO...PQR...SEW... STATUS REPORT FOR WS 65 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ORC003-005-009-027-043-047-051-053-067-071-270040- OR . OREGON COUNTIES INCLUDED ARE BENTON CLACKAMAS COLUMBIA HOOD RIVER LINN MARION MULTNOMAH POLK WASHINGTON YAMHILL WAC011-015-033-041-053-059-067-270040- WA . WASHINGTON COUNTIES INCLUDED ARE CLARK COWLITZ KING LEWIS PIERCE SKAMANIA THURSTON THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 65 SEVERE TSTM OR WA 262210Z - 270400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 65 NWS Storm Prediction Center Norman OK 310 PM PDT Wed Mar 26 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northwest Oregon Western Washington * Effective this Wednesday afternoon and evening from 310 PM until 900 PM PDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter likely Scattered damaging wind gusts to 70 mph possible A tornado or two possible SUMMARY...Thunderstorms are expected to develop this afternoon over parts of northwest Oregon and track north-northeastward across the watch area through early evening. Large hail and damaging wind gusts are possible in the strongest cells. The severe thunderstorm watch area is approximately along and 45 statute miles east and west of a line from 45 miles south of Salem OR to 5 miles north northwest of Seattle WA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU5). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 22030. ...Hart Read more