SPC Day 2 Fire Weather Outlook

1 month ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0200 AM CDT Tue Aug 26 2025 Valid 271200Z - 281200Z ...Synopsis... Monsoonal moisture will continue spreading northward across parts of the Northwest and northern Rockies, while a pair of convectively augmented midlevel lows overspread the region. The associated forcing for ascent and weak buoyancy will support some potential for isolated/embedded lightning within high-based showers. Given dry/receptive fuels, any lightning that does occur will pose a risk of new ignitions along the leading edge of the deeper monsoonal moisture plume. Additionally, another day of mixed wet/dry thunderstorms are expected across parts of northern CA into southern OR. Similar to Day 1/Tuesday, several days of rainfall limits confidence in the overall fire-weather threat, though isolated lightning-induced ignitions will still be possible where fuels remain dry. ..Weinman.. 08/26/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0200 AM CDT Tue Aug 26 2025 Valid 271200Z - 281200Z ...Synopsis... Monsoonal moisture will continue spreading northward across parts of the Northwest and northern Rockies, while a pair of convectively augmented midlevel lows overspread the region. The associated forcing for ascent and weak buoyancy will support some potential for isolated/embedded lightning within high-based showers. Given dry/receptive fuels, any lightning that does occur will pose a risk of new ignitions along the leading edge of the deeper monsoonal moisture plume. Additionally, another day of mixed wet/dry thunderstorms are expected across parts of northern CA into southern OR. Similar to Day 1/Tuesday, several days of rainfall limits confidence in the overall fire-weather threat, though isolated lightning-induced ignitions will still be possible where fuels remain dry. ..Weinman.. 08/26/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook

1 month ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0159 AM CDT Tue Aug 26 2025 Valid 261200Z - 271200Z ...Synopsis... One or more subtle midlevel disturbances will overspread the Northwest today, where well-established monsoonal moisture is in place. The associated forcing for ascent and sufficient buoyancy should support a mix of wet/dry high-based thunderstorms over the Cascades during afternoon into the evening. While thunderstorm coverage may remain somewhat limited (potentially 5-10 percent), any storms that form may pose a risk of new ignitions and gusty/erratic outflow winds. A continuation of mixed wet/dry thunderstorms is expected farther south into northern CA, though several days of rain casts uncertainty on fuel receptiveness -- precluding highlights at this time. ..Weinman.. 08/26/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook

1 month ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0159 AM CDT Tue Aug 26 2025 Valid 261200Z - 271200Z ...Synopsis... One or more subtle midlevel disturbances will overspread the Northwest today, where well-established monsoonal moisture is in place. The associated forcing for ascent and sufficient buoyancy should support a mix of wet/dry high-based thunderstorms over the Cascades during afternoon into the evening. While thunderstorm coverage may remain somewhat limited (potentially 5-10 percent), any storms that form may pose a risk of new ignitions and gusty/erratic outflow winds. A continuation of mixed wet/dry thunderstorms is expected farther south into northern CA, though several days of rain casts uncertainty on fuel receptiveness -- precluding highlights at this time. ..Weinman.. 08/26/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook

1 month ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0159 AM CDT Tue Aug 26 2025 Valid 261200Z - 271200Z ...Synopsis... One or more subtle midlevel disturbances will overspread the Northwest today, where well-established monsoonal moisture is in place. The associated forcing for ascent and sufficient buoyancy should support a mix of wet/dry high-based thunderstorms over the Cascades during afternoon into the evening. While thunderstorm coverage may remain somewhat limited (potentially 5-10 percent), any storms that form may pose a risk of new ignitions and gusty/erratic outflow winds. A continuation of mixed wet/dry thunderstorms is expected farther south into northern CA, though several days of rain casts uncertainty on fuel receptiveness -- precluding highlights at this time. ..Weinman.. 08/26/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook

1 month ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0159 AM CDT Tue Aug 26 2025 Valid 261200Z - 271200Z ...Synopsis... One or more subtle midlevel disturbances will overspread the Northwest today, where well-established monsoonal moisture is in place. The associated forcing for ascent and sufficient buoyancy should support a mix of wet/dry high-based thunderstorms over the Cascades during afternoon into the evening. While thunderstorm coverage may remain somewhat limited (potentially 5-10 percent), any storms that form may pose a risk of new ignitions and gusty/erratic outflow winds. A continuation of mixed wet/dry thunderstorms is expected farther south into northern CA, though several days of rain casts uncertainty on fuel receptiveness -- precluding highlights at this time. ..Weinman.. 08/26/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook

1 month ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0159 AM CDT Tue Aug 26 2025 Valid 261200Z - 271200Z ...Synopsis... One or more subtle midlevel disturbances will overspread the Northwest today, where well-established monsoonal moisture is in place. The associated forcing for ascent and sufficient buoyancy should support a mix of wet/dry high-based thunderstorms over the Cascades during afternoon into the evening. While thunderstorm coverage may remain somewhat limited (potentially 5-10 percent), any storms that form may pose a risk of new ignitions and gusty/erratic outflow winds. A continuation of mixed wet/dry thunderstorms is expected farther south into northern CA, though several days of rain casts uncertainty on fuel receptiveness -- precluding highlights at this time. ..Weinman.. 08/26/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Aug 26, 2025 0600 UTC Day 2 Convective Outlook

1 month ago
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Tue Aug 26 2025 Valid 271200Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The potential for severe storms appears to be low across the continental U.S. tomorrow (Wednesday). A few stronger storms are possible across parts of the Upper Midwest and Colorado Front Range. ...Synopsis... Broad upper troughing will persist across the eastern U.S., with an embedded impulse ejecting into the Atlantic as a second impulse impinges on the Great Lakes. An upper ridge will persist over the Southwest while a weak mid-level cut-off low meanders across the Pacific Northwest. A surface high will become established east of the MS River, with low-level moisture poised to pivot around the surface high and advect northward across the Plains into the Great Lakes region, with scattered thunderstorms expected. Scattered thunderstorms will also be possible across portions of the High Plains during the afternoon given lee surface troughing, with elevated thunderstorms continuing into the central Plains overnight within a warm-air advection regime. The best chance for any strong storms would be over portions of the Colorado Front Range and the Upper Midwest, where an overlap of marginally favorable shear and instability may exist. ...Parts of the Upper Midwest... The second impulse pivoting around the broader upper trough over the Great Lakes will promote an organized round of thunderstorms within a deep-layer northwesterly flow regime. Modest mid-level lapse rates will overspread low 60s F dewpoints, resulting in up to 1200 J/kg of thin MLCAPE across extreme eastern SD toward the MN/IA border. Modest veering flow with height will encourage 25-35 kts of effective bulk shear as well. As such, a few strong storms with sub-severe wind and hail are possible around afternoon peak heating. ...Colorado Front Range... Upslope low-level flow across the central High Plains will support 60+ f surface dewpoints to advect northwestward toward the Colorado Front Range. Here, increasing westerly flow with height will support some speed shear, evident in forecast soundings as relatively straight hodographs. Lapse rates are expected to be poor (i.e. around 6.5 C/km), with MLCAPE peaking around 1000 J/kg via thin profiles. A few of the stronger storms may produce some wind and hail, but these hazards are currently expected to remain generally below severe limits. ..Squitieri.. 08/26/2025 Read more

SPC Aug 26, 2025 0600 UTC Day 2 Convective Outlook

1 month ago
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Tue Aug 26 2025 Valid 271200Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The potential for severe storms appears to be low across the continental U.S. tomorrow (Wednesday). A few stronger storms are possible across parts of the Upper Midwest and Colorado Front Range. ...Synopsis... Broad upper troughing will persist across the eastern U.S., with an embedded impulse ejecting into the Atlantic as a second impulse impinges on the Great Lakes. An upper ridge will persist over the Southwest while a weak mid-level cut-off low meanders across the Pacific Northwest. A surface high will become established east of the MS River, with low-level moisture poised to pivot around the surface high and advect northward across the Plains into the Great Lakes region, with scattered thunderstorms expected. Scattered thunderstorms will also be possible across portions of the High Plains during the afternoon given lee surface troughing, with elevated thunderstorms continuing into the central Plains overnight within a warm-air advection regime. The best chance for any strong storms would be over portions of the Colorado Front Range and the Upper Midwest, where an overlap of marginally favorable shear and instability may exist. ...Parts of the Upper Midwest... The second impulse pivoting around the broader upper trough over the Great Lakes will promote an organized round of thunderstorms within a deep-layer northwesterly flow regime. Modest mid-level lapse rates will overspread low 60s F dewpoints, resulting in up to 1200 J/kg of thin MLCAPE across extreme eastern SD toward the MN/IA border. Modest veering flow with height will encourage 25-35 kts of effective bulk shear as well. As such, a few strong storms with sub-severe wind and hail are possible around afternoon peak heating. ...Colorado Front Range... Upslope low-level flow across the central High Plains will support 60+ f surface dewpoints to advect northwestward toward the Colorado Front Range. Here, increasing westerly flow with height will support some speed shear, evident in forecast soundings as relatively straight hodographs. Lapse rates are expected to be poor (i.e. around 6.5 C/km), with MLCAPE peaking around 1000 J/kg via thin profiles. A few of the stronger storms may produce some wind and hail, but these hazards are currently expected to remain generally below severe limits. ..Squitieri.. 08/26/2025 Read more

SPC Aug 26, 2025 0600 UTC Day 2 Convective Outlook

1 month ago
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Tue Aug 26 2025 Valid 271200Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The potential for severe storms appears to be low across the continental U.S. tomorrow (Wednesday). A few stronger storms are possible across parts of the Upper Midwest and Colorado Front Range. ...Synopsis... Broad upper troughing will persist across the eastern U.S., with an embedded impulse ejecting into the Atlantic as a second impulse impinges on the Great Lakes. An upper ridge will persist over the Southwest while a weak mid-level cut-off low meanders across the Pacific Northwest. A surface high will become established east of the MS River, with low-level moisture poised to pivot around the surface high and advect northward across the Plains into the Great Lakes region, with scattered thunderstorms expected. Scattered thunderstorms will also be possible across portions of the High Plains during the afternoon given lee surface troughing, with elevated thunderstorms continuing into the central Plains overnight within a warm-air advection regime. The best chance for any strong storms would be over portions of the Colorado Front Range and the Upper Midwest, where an overlap of marginally favorable shear and instability may exist. ...Parts of the Upper Midwest... The second impulse pivoting around the broader upper trough over the Great Lakes will promote an organized round of thunderstorms within a deep-layer northwesterly flow regime. Modest mid-level lapse rates will overspread low 60s F dewpoints, resulting in up to 1200 J/kg of thin MLCAPE across extreme eastern SD toward the MN/IA border. Modest veering flow with height will encourage 25-35 kts of effective bulk shear as well. As such, a few strong storms with sub-severe wind and hail are possible around afternoon peak heating. ...Colorado Front Range... Upslope low-level flow across the central High Plains will support 60+ f surface dewpoints to advect northwestward toward the Colorado Front Range. Here, increasing westerly flow with height will support some speed shear, evident in forecast soundings as relatively straight hodographs. Lapse rates are expected to be poor (i.e. around 6.5 C/km), with MLCAPE peaking around 1000 J/kg via thin profiles. A few of the stronger storms may produce some wind and hail, but these hazards are currently expected to remain generally below severe limits. ..Squitieri.. 08/26/2025 Read more

SPC Aug 26, 2025 0600 UTC Day 2 Convective Outlook

1 month ago
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Tue Aug 26 2025 Valid 271200Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The potential for severe storms appears to be low across the continental U.S. tomorrow (Wednesday). A few stronger storms are possible across parts of the Upper Midwest and Colorado Front Range. ...Synopsis... Broad upper troughing will persist across the eastern U.S., with an embedded impulse ejecting into the Atlantic as a second impulse impinges on the Great Lakes. An upper ridge will persist over the Southwest while a weak mid-level cut-off low meanders across the Pacific Northwest. A surface high will become established east of the MS River, with low-level moisture poised to pivot around the surface high and advect northward across the Plains into the Great Lakes region, with scattered thunderstorms expected. Scattered thunderstorms will also be possible across portions of the High Plains during the afternoon given lee surface troughing, with elevated thunderstorms continuing into the central Plains overnight within a warm-air advection regime. The best chance for any strong storms would be over portions of the Colorado Front Range and the Upper Midwest, where an overlap of marginally favorable shear and instability may exist. ...Parts of the Upper Midwest... The second impulse pivoting around the broader upper trough over the Great Lakes will promote an organized round of thunderstorms within a deep-layer northwesterly flow regime. Modest mid-level lapse rates will overspread low 60s F dewpoints, resulting in up to 1200 J/kg of thin MLCAPE across extreme eastern SD toward the MN/IA border. Modest veering flow with height will encourage 25-35 kts of effective bulk shear as well. As such, a few strong storms with sub-severe wind and hail are possible around afternoon peak heating. ...Colorado Front Range... Upslope low-level flow across the central High Plains will support 60+ f surface dewpoints to advect northwestward toward the Colorado Front Range. Here, increasing westerly flow with height will support some speed shear, evident in forecast soundings as relatively straight hodographs. Lapse rates are expected to be poor (i.e. around 6.5 C/km), with MLCAPE peaking around 1000 J/kg via thin profiles. A few of the stronger storms may produce some wind and hail, but these hazards are currently expected to remain generally below severe limits. ..Squitieri.. 08/26/2025 Read more

SPC Aug 26, 2025 0600 UTC Day 1 Convective Outlook

1 month ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1257 AM CDT Tue Aug 26 2025 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are not expected across the continental U.S. on Tuesday. ...Synopsis... An expansive upper-level trough will be present across the eastern CONUS today. At the surface, a cool, dry airmass and high pressure will dominate most of the eastern CONUS, limiting thunderstorm potential. Widespread monsoonal thunderstorm activity will occur across much of the western CONUS. ...Southern Arizona... Weak instability is forecast across southern Arizona with sufficient heating for thunderstorm development this afternoon. Mid-level flow around 20 knots Tuesday morning will weaken slightly by the afternoon. This belt of enhanced flow may provide enough shear for a stronger multicell thunderstorm with an isolated damaging wind threat. However, overall, expect storm organization to be limited with mostly sub-severe convection due to weaker instability and shear than Monday. Given the number of storms across the western CONUS today, isolated damaging wind gusts may be possible. However, a more organized region/threat is not apparent. ..Bentley/Weinman.. 08/26/2025 Read more

SPC Aug 26, 2025 0600 UTC Day 1 Convective Outlook

1 month ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1257 AM CDT Tue Aug 26 2025 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are not expected across the continental U.S. on Tuesday. ...Synopsis... An expansive upper-level trough will be present across the eastern CONUS today. At the surface, a cool, dry airmass and high pressure will dominate most of the eastern CONUS, limiting thunderstorm potential. Widespread monsoonal thunderstorm activity will occur across much of the western CONUS. ...Southern Arizona... Weak instability is forecast across southern Arizona with sufficient heating for thunderstorm development this afternoon. Mid-level flow around 20 knots Tuesday morning will weaken slightly by the afternoon. This belt of enhanced flow may provide enough shear for a stronger multicell thunderstorm with an isolated damaging wind threat. However, overall, expect storm organization to be limited with mostly sub-severe convection due to weaker instability and shear than Monday. Given the number of storms across the western CONUS today, isolated damaging wind gusts may be possible. However, a more organized region/threat is not apparent. ..Bentley/Weinman.. 08/26/2025 Read more

SPC Aug 26, 2025 0600 UTC Day 1 Convective Outlook

1 month ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1257 AM CDT Tue Aug 26 2025 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are not expected across the continental U.S. on Tuesday. ...Synopsis... An expansive upper-level trough will be present across the eastern CONUS today. At the surface, a cool, dry airmass and high pressure will dominate most of the eastern CONUS, limiting thunderstorm potential. Widespread monsoonal thunderstorm activity will occur across much of the western CONUS. ...Southern Arizona... Weak instability is forecast across southern Arizona with sufficient heating for thunderstorm development this afternoon. Mid-level flow around 20 knots Tuesday morning will weaken slightly by the afternoon. This belt of enhanced flow may provide enough shear for a stronger multicell thunderstorm with an isolated damaging wind threat. However, overall, expect storm organization to be limited with mostly sub-severe convection due to weaker instability and shear than Monday. Given the number of storms across the western CONUS today, isolated damaging wind gusts may be possible. However, a more organized region/threat is not apparent. ..Bentley/Weinman.. 08/26/2025 Read more

SPC Aug 26, 2025 0600 UTC Day 1 Convective Outlook

1 month ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1257 AM CDT Tue Aug 26 2025 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are not expected across the continental U.S. on Tuesday. ...Synopsis... An expansive upper-level trough will be present across the eastern CONUS today. At the surface, a cool, dry airmass and high pressure will dominate most of the eastern CONUS, limiting thunderstorm potential. Widespread monsoonal thunderstorm activity will occur across much of the western CONUS. ...Southern Arizona... Weak instability is forecast across southern Arizona with sufficient heating for thunderstorm development this afternoon. Mid-level flow around 20 knots Tuesday morning will weaken slightly by the afternoon. This belt of enhanced flow may provide enough shear for a stronger multicell thunderstorm with an isolated damaging wind threat. However, overall, expect storm organization to be limited with mostly sub-severe convection due to weaker instability and shear than Monday. Given the number of storms across the western CONUS today, isolated damaging wind gusts may be possible. However, a more organized region/threat is not apparent. ..Bentley/Weinman.. 08/26/2025 Read more

Eastern North Pacific Tropical Weather Outlook

1 month ago
000
ABPZ20 KNHC 260521
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 PM PDT Mon Aug 25 2025

For the eastern and central North Pacific east of 180 longitude:

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Storm Juliette, located in the east Pacific basin several hundred
miles southwest of the southern tip of the Baja California
peninsula.

Well Southeast of the Hawaiian Islands:
A trough of low pressure located several hundred miles southeast of
the Hawaiian Islands continues to produce disorganized showers and
thunderstorms. Environmental conditions appear conducive for some
gradual development of this system, and a tropical depression could
form late this week, while it moves westward at 10 to 15 mph across
the central Pacific basin.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 7 days...medium...40 percent.

Well Southwest of the Baja California Peninsula:
A tropical wave off the coast of southern Mexico is producing
limited shower activity. Some slow development is possible late
this week and into the weekend as the system moves westward to
west-northwestward at 10 to 15 mph across the central part of the
eastern Pacific basin.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 7 days...low...20 percent.

$$
Forecaster Kelly
NHC Webmaster

Tropical Storm Juliette Forecast Discussion Number 6

1 month ago
Issued at 800 PM PDT Mon Aug 25 2025 000 WTPZ45 KNHC 260232 TCDEP5 Tropical Storm Juliette Discussion Number 6 NWS National Hurricane Center Miami FL EP102025 800 PM PDT Mon Aug 25 2025 Juliette continues to strengthen. A microwave pass from a few hours ago suggested that the storm was developing an inner core, and recent infrared satellite images indicate that banding features are increasing south of the center. The Dvorak estimates from TAFB, SAB, and CIMSS have all increased to 3.5/55 kt, and therefore, the initial wind speed is increased to that value. Juliette is expected to remain in favorable conditions to strengthen for about another day, and it seems likely that it will become a hurricane on Tuesday. However, the strengthening trend should end by Tuesday night when the storm is forecast to cross the 26 C SST isotherm and then move into an environment of drier air and stronger shear. Juliette is expected to become a remnant low in about 3 days when it is forecast to be over cool 22 C waters, and dissipate entirely this weekend. The NHC intensity forecast is a blend of the HCCA and IVCN models. The storm is moving west-northwestward at 12 kt on the southwest side of a mid-level ridge. A gradual turn to the northwest and then the north-northwest with a notable reduction in forward speed is expected over the next few days as Juliette moves toward a weakness in the ridge. The NHC track forecast is largely an update of the previous one and lies on the western side of the guidance envelope, in best agreement with EMXI and the Google DeepMind models. FORECAST POSITIONS AND MAX WINDS INIT 26/0300Z 17.8N 115.5W 55 KT 65 MPH 12H 26/1200Z 18.5N 116.8W 65 KT 75 MPH 24H 27/0000Z 19.8N 118.3W 65 KT 75 MPH 36H 27/1200Z 21.3N 119.7W 60 KT 70 MPH 48H 28/0000Z 22.8N 120.9W 50 KT 60 MPH 60H 28/1200Z 24.0N 121.6W 40 KT 45 MPH 72H 29/0000Z 24.9N 122.0W 30 KT 35 MPH...POST-TROP/REMNT LOW 96H 30/0000Z 25.6N 122.9W 20 KT 25 MPH...POST-TROP/REMNT LOW 120H 31/0000Z...DISSIPATED $$ Forecaster Cangialosi
NHC Webmaster

Tropical Storm Juliette Wind Speed Probabilities Number 6

1 month ago
Issued at 0300 UTC TUE AUG 26 2025 000 FOPZ15 KNHC 260231 PWSEP5 TROPICAL STORM JULIETTE WIND SPEED PROBABILITIES NUMBER 6 NWS NATIONAL HURRICANE CENTER MIAMI FL EP102025 0300 UTC TUE AUG 26 2025 AT 0300Z THE CENTER OF TROPICAL STORM JULIETTE WAS LOCATED NEAR LATITUDE 17.8 NORTH...LONGITUDE 115.5 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 55 KTS...65 MPH...100 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 00Z TUE AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 00Z TUE 12Z TUE 00Z WED 12Z WED 00Z THU 00Z FRI 00Z SAT PERIODS TO TO TO TO TO TO TO 12Z TUE 00Z WED 12Z WED 00Z THU 00Z FRI 00Z SAT 00Z SUN FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT ISLA CLARION 34 5 3( 8) 1( 9) X( 9) X( 9) X( 9) X( 9) 15N 115W 34 2 1( 3) X( 3) X( 3) X( 3) X( 3) X( 3) 20N 115W 34 3 4( 7) 1( 8) X( 8) X( 8) X( 8) X( 8) 15N 120W 34 2 1( 3) X( 3) X( 3) X( 3) X( 3) X( 3) 20N 120W 34 3 21(24) 28(52) 1(53) X(53) X(53) X(53) 20N 120W 50 X 1( 1) 5( 6) X( 6) X( 6) X( 6) X( 6) 20N 120W 64 X X( X) 1( 1) X( 1) X( 1) X( 1) X( 1) 25N 120W 34 X X( X) 4( 4) 5( 9) 7(16) 1(17) X(17) 25N 125W 34 X X( X) X( X) 1( 1) 2( 3) 1( 4) X( 4) $$ FORECASTER CANGIALOSI
NHC Webmaster