Aggregator

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1245 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...Synopsis... The upper-level trough in the West will continue its slow eastward progress into the Great Basin. The mid-level jet will intensify within the southern and eastern Great Basin. Cooler air aloft and marginal mid-level ascent will also promote some convection in Washington. ...Washington... A pocket of drier fuels exists in the Columbia Basin and nearby vicinity. Recent lightning activity has led to fire starts. Given the current convection in Oregon moving north and west around the upper-low, some lightning activity can be expected early this morning. Additional thunderstorms appear possible during the afternoon and perhaps again overnight tonight. However, those storms may pose a lesser lightning ignition threat given increasing PWAT values through the period. ...Eastern Nevada/western Utah... Strong surface winds of 15-25 mph will overspread parts of the Great Basin beneath the mid-level jet. RH could fall near 10% locally, but 15-20% will be more common. Given the potential for critical meteorological conditions, elevated fire weather concerns are expected despite the unfavorable to marginal fuel receptiveness in these areas. ..Wendt.. 09/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1245 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...Synopsis... The upper-level trough in the West will continue its slow eastward progress into the Great Basin. The mid-level jet will intensify within the southern and eastern Great Basin. Cooler air aloft and marginal mid-level ascent will also promote some convection in Washington. ...Washington... A pocket of drier fuels exists in the Columbia Basin and nearby vicinity. Recent lightning activity has led to fire starts. Given the current convection in Oregon moving north and west around the upper-low, some lightning activity can be expected early this morning. Additional thunderstorms appear possible during the afternoon and perhaps again overnight tonight. However, those storms may pose a lesser lightning ignition threat given increasing PWAT values through the period. ...Eastern Nevada/western Utah... Strong surface winds of 15-25 mph will overspread parts of the Great Basin beneath the mid-level jet. RH could fall near 10% locally, but 15-20% will be more common. Given the potential for critical meteorological conditions, elevated fire weather concerns are expected despite the unfavorable to marginal fuel receptiveness in these areas. ..Wendt.. 09/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1245 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...Synopsis... The upper-level trough in the West will continue its slow eastward progress into the Great Basin. The mid-level jet will intensify within the southern and eastern Great Basin. Cooler air aloft and marginal mid-level ascent will also promote some convection in Washington. ...Washington... A pocket of drier fuels exists in the Columbia Basin and nearby vicinity. Recent lightning activity has led to fire starts. Given the current convection in Oregon moving north and west around the upper-low, some lightning activity can be expected early this morning. Additional thunderstorms appear possible during the afternoon and perhaps again overnight tonight. However, those storms may pose a lesser lightning ignition threat given increasing PWAT values through the period. ...Eastern Nevada/western Utah... Strong surface winds of 15-25 mph will overspread parts of the Great Basin beneath the mid-level jet. RH could fall near 10% locally, but 15-20% will be more common. Given the potential for critical meteorological conditions, elevated fire weather concerns are expected despite the unfavorable to marginal fuel receptiveness in these areas. ..Wendt.. 09/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1245 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...Synopsis... The upper-level trough in the West will continue its slow eastward progress into the Great Basin. The mid-level jet will intensify within the southern and eastern Great Basin. Cooler air aloft and marginal mid-level ascent will also promote some convection in Washington. ...Washington... A pocket of drier fuels exists in the Columbia Basin and nearby vicinity. Recent lightning activity has led to fire starts. Given the current convection in Oregon moving north and west around the upper-low, some lightning activity can be expected early this morning. Additional thunderstorms appear possible during the afternoon and perhaps again overnight tonight. However, those storms may pose a lesser lightning ignition threat given increasing PWAT values through the period. ...Eastern Nevada/western Utah... Strong surface winds of 15-25 mph will overspread parts of the Great Basin beneath the mid-level jet. RH could fall near 10% locally, but 15-20% will be more common. Given the potential for critical meteorological conditions, elevated fire weather concerns are expected despite the unfavorable to marginal fuel receptiveness in these areas. ..Wendt.. 09/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1245 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...Synopsis... The upper-level trough in the West will continue its slow eastward progress into the Great Basin. The mid-level jet will intensify within the southern and eastern Great Basin. Cooler air aloft and marginal mid-level ascent will also promote some convection in Washington. ...Washington... A pocket of drier fuels exists in the Columbia Basin and nearby vicinity. Recent lightning activity has led to fire starts. Given the current convection in Oregon moving north and west around the upper-low, some lightning activity can be expected early this morning. Additional thunderstorms appear possible during the afternoon and perhaps again overnight tonight. However, those storms may pose a lesser lightning ignition threat given increasing PWAT values through the period. ...Eastern Nevada/western Utah... Strong surface winds of 15-25 mph will overspread parts of the Great Basin beneath the mid-level jet. RH could fall near 10% locally, but 15-20% will be more common. Given the potential for critical meteorological conditions, elevated fire weather concerns are expected despite the unfavorable to marginal fuel receptiveness in these areas. ..Wendt.. 09/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1245 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...Synopsis... The upper-level trough in the West will continue its slow eastward progress into the Great Basin. The mid-level jet will intensify within the southern and eastern Great Basin. Cooler air aloft and marginal mid-level ascent will also promote some convection in Washington. ...Washington... A pocket of drier fuels exists in the Columbia Basin and nearby vicinity. Recent lightning activity has led to fire starts. Given the current convection in Oregon moving north and west around the upper-low, some lightning activity can be expected early this morning. Additional thunderstorms appear possible during the afternoon and perhaps again overnight tonight. However, those storms may pose a lesser lightning ignition threat given increasing PWAT values through the period. ...Eastern Nevada/western Utah... Strong surface winds of 15-25 mph will overspread parts of the Great Basin beneath the mid-level jet. RH could fall near 10% locally, but 15-20% will be more common. Given the potential for critical meteorological conditions, elevated fire weather concerns are expected despite the unfavorable to marginal fuel receptiveness in these areas. ..Wendt.. 09/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

589
ABPZ20 KNHC 100507
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 PM PDT Tue Sep 9 2025

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

Active Systems:
The National Hurricane Center is issuing advisories on Tropical
Storm Kiko, located in the central Pacific basin just northeast of
Oahu in the Hawaiian Islands.

South of Southern and Southwestern Mexico (EP95):
A tropical wave located a couple hundred miles offshore of the coast
of southern Mexico is producing a large area of disorganized showers
and thunderstorms. Environmental conditions are favorable for
development of this system, and a tropical depression is likely to
form by late this week as it moves west-northwestward, roughly
parallel to but offshore of the Mexican coast.
* Formation chance through 48 hours...medium...50 percent.
* Formation chance through 7 days...high...90 percent.

$$
Forecaster Jelsema

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1202 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Scattered showers and thunderstorms are possible over parts of the Northwest and northern Rockies with more isolated storms over the High Plains. Severe potential is generally low. ...Synopsis and Discussion... An upper low will remain nearly stationary over the western states with a large area of cyclonic flow aloft from southern CA into the eastern Great Basin and central Rockies. Meanwhile, another broad but weaker upper trough will affect the eastern states with cool air aloft extending from the MS Valley into the Northeast. Between these two troughs, an upper ridge will exist over the Plains, with upper high over western TX. At the surface, high pressure will extend southward across the Great Lakes and into much of the East, resulting in stable conditions. Weak southerly winds across the Plains will maintain pockets of 50s and low 60s F dewpoints, with greater moisture along the TX Coast. Early day storms are likely to be ongoing over KS into northern OK, but are expected to dwindle during the day. A few strong wind gusts cannot be ruled out prior to this activity weakening. Otherwise, a few isolated cells may occur from northeast NM into eastern WY during the late afternoon with heating and weak upslope flow. Warming aloft is expected to mitigate overall potential. Elsewhere, scattered afternoon storms will occur beneath the upper trough from northern NV into OR and western ID, and a few of these storms could produce at least small hail given such cool temperatures aloft and modest deep-layer shear. ..Jewell/Wendt.. 09/10/2025 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1202 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Scattered showers and thunderstorms are possible over parts of the Northwest and northern Rockies with more isolated storms over the High Plains. Severe potential is generally low. ...Synopsis and Discussion... An upper low will remain nearly stationary over the western states with a large area of cyclonic flow aloft from southern CA into the eastern Great Basin and central Rockies. Meanwhile, another broad but weaker upper trough will affect the eastern states with cool air aloft extending from the MS Valley into the Northeast. Between these two troughs, an upper ridge will exist over the Plains, with upper high over western TX. At the surface, high pressure will extend southward across the Great Lakes and into much of the East, resulting in stable conditions. Weak southerly winds across the Plains will maintain pockets of 50s and low 60s F dewpoints, with greater moisture along the TX Coast. Early day storms are likely to be ongoing over KS into northern OK, but are expected to dwindle during the day. A few strong wind gusts cannot be ruled out prior to this activity weakening. Otherwise, a few isolated cells may occur from northeast NM into eastern WY during the late afternoon with heating and weak upslope flow. Warming aloft is expected to mitigate overall potential. Elsewhere, scattered afternoon storms will occur beneath the upper trough from northern NV into OR and western ID, and a few of these storms could produce at least small hail given such cool temperatures aloft and modest deep-layer shear. ..Jewell/Wendt.. 09/10/2025 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1202 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Scattered showers and thunderstorms are possible over parts of the Northwest and northern Rockies with more isolated storms over the High Plains. Severe potential is generally low. ...Synopsis and Discussion... An upper low will remain nearly stationary over the western states with a large area of cyclonic flow aloft from southern CA into the eastern Great Basin and central Rockies. Meanwhile, another broad but weaker upper trough will affect the eastern states with cool air aloft extending from the MS Valley into the Northeast. Between these two troughs, an upper ridge will exist over the Plains, with upper high over western TX. At the surface, high pressure will extend southward across the Great Lakes and into much of the East, resulting in stable conditions. Weak southerly winds across the Plains will maintain pockets of 50s and low 60s F dewpoints, with greater moisture along the TX Coast. Early day storms are likely to be ongoing over KS into northern OK, but are expected to dwindle during the day. A few strong wind gusts cannot be ruled out prior to this activity weakening. Otherwise, a few isolated cells may occur from northeast NM into eastern WY during the late afternoon with heating and weak upslope flow. Warming aloft is expected to mitigate overall potential. Elsewhere, scattered afternoon storms will occur beneath the upper trough from northern NV into OR and western ID, and a few of these storms could produce at least small hail given such cool temperatures aloft and modest deep-layer shear. ..Jewell/Wendt.. 09/10/2025 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1202 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Scattered showers and thunderstorms are possible over parts of the Northwest and northern Rockies with more isolated storms over the High Plains. Severe potential is generally low. ...Synopsis and Discussion... An upper low will remain nearly stationary over the western states with a large area of cyclonic flow aloft from southern CA into the eastern Great Basin and central Rockies. Meanwhile, another broad but weaker upper trough will affect the eastern states with cool air aloft extending from the MS Valley into the Northeast. Between these two troughs, an upper ridge will exist over the Plains, with upper high over western TX. At the surface, high pressure will extend southward across the Great Lakes and into much of the East, resulting in stable conditions. Weak southerly winds across the Plains will maintain pockets of 50s and low 60s F dewpoints, with greater moisture along the TX Coast. Early day storms are likely to be ongoing over KS into northern OK, but are expected to dwindle during the day. A few strong wind gusts cannot be ruled out prior to this activity weakening. Otherwise, a few isolated cells may occur from northeast NM into eastern WY during the late afternoon with heating and weak upslope flow. Warming aloft is expected to mitigate overall potential. Elsewhere, scattered afternoon storms will occur beneath the upper trough from northern NV into OR and western ID, and a few of these storms could produce at least small hail given such cool temperatures aloft and modest deep-layer shear. ..Jewell/Wendt.. 09/10/2025 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1202 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Scattered showers and thunderstorms are possible over parts of the Northwest and northern Rockies with more isolated storms over the High Plains. Severe potential is generally low. ...Synopsis and Discussion... An upper low will remain nearly stationary over the western states with a large area of cyclonic flow aloft from southern CA into the eastern Great Basin and central Rockies. Meanwhile, another broad but weaker upper trough will affect the eastern states with cool air aloft extending from the MS Valley into the Northeast. Between these two troughs, an upper ridge will exist over the Plains, with upper high over western TX. At the surface, high pressure will extend southward across the Great Lakes and into much of the East, resulting in stable conditions. Weak southerly winds across the Plains will maintain pockets of 50s and low 60s F dewpoints, with greater moisture along the TX Coast. Early day storms are likely to be ongoing over KS into northern OK, but are expected to dwindle during the day. A few strong wind gusts cannot be ruled out prior to this activity weakening. Otherwise, a few isolated cells may occur from northeast NM into eastern WY during the late afternoon with heating and weak upslope flow. Warming aloft is expected to mitigate overall potential. Elsewhere, scattered afternoon storms will occur beneath the upper trough from northern NV into OR and western ID, and a few of these storms could produce at least small hail given such cool temperatures aloft and modest deep-layer shear. ..Jewell/Wendt.. 09/10/2025 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1202 AM CDT Wed Sep 10 2025 Valid 101200Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Scattered showers and thunderstorms are possible over parts of the Northwest and northern Rockies with more isolated storms over the High Plains. Severe potential is generally low. ...Synopsis and Discussion... An upper low will remain nearly stationary over the western states with a large area of cyclonic flow aloft from southern CA into the eastern Great Basin and central Rockies. Meanwhile, another broad but weaker upper trough will affect the eastern states with cool air aloft extending from the MS Valley into the Northeast. Between these two troughs, an upper ridge will exist over the Plains, with upper high over western TX. At the surface, high pressure will extend southward across the Great Lakes and into much of the East, resulting in stable conditions. Weak southerly winds across the Plains will maintain pockets of 50s and low 60s F dewpoints, with greater moisture along the TX Coast. Early day storms are likely to be ongoing over KS into northern OK, but are expected to dwindle during the day. A few strong wind gusts cannot be ruled out prior to this activity weakening. Otherwise, a few isolated cells may occur from northeast NM into eastern WY during the late afternoon with heating and weak upslope flow. Warming aloft is expected to mitigate overall potential. Elsewhere, scattered afternoon storms will occur beneath the upper trough from northern NV into OR and western ID, and a few of these storms could produce at least small hail given such cool temperatures aloft and modest deep-layer shear. ..Jewell/Wendt.. 09/10/2025 Read more

Issued at 0300 UTC WED SEP 10 2025 ZCZC HFOPWSCP4 ALL TTAA00 PHFO DDHHMM TROPICAL STORM KIKO WIND SPEED PROBABILITIES NUMBER 40 NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI EP112025 ISSUED BY NWS NATIONAL HURRICANE CENTER MIAMI FL 0300 UTC WED SEP 10 2025 AT 0300Z THE CENTER OF TROPICAL STORM KIKO WAS LOCATED NEAR LATITUDE 22.9 NORTH...LONGITUDE 156.3 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 35 KTS...40 MPH...65 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 WED 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 WED 12Z WED 00Z THU 12Z THU 00Z FRI 00Z SAT 00Z SUN PERIODS TO TO TO TO TO TO TO 12Z WED 00Z THU 12Z THU 00Z FRI 00Z SAT 00Z SUN 00Z MON FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 25N 160W 34 1 9(10) X(10) X(10) X(10) X(10) X(10) BUOY 51101 34 X 2( 2) 8(10) X(10) X(10) X(10) X(10) 25N 165W 34 X X( X) 1( 1) 3( 4) 1( 5) X( 5) X( 5) $$ FORECASTER BEVEN NNNN

Issued at 500 PM HST Tue Sep 09 2025 ZCZC HFOTCPCP4 ALL TTAA00 PHFO DDHHMM BULLETIN Tropical Storm Kiko Advisory Number 40 NWS Central Pacific Hurricane Center Honolulu HI EP112025 Issued by NWS National Hurricane Center Miami FL 500 PM HST Tue Sep 09 2025 ... KIKO STILL A TROPICAL STORM AND IS PRODUCING LIFE-THREATENING RIP CURRENTS AND HIGH SURF ACROSS PORTIONS OF HAWAIIAN ISLANDS... SUMMARY OF 500 PM HST...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...22.9N 156.3W ABOUT 150 MI...240 KM NE OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in the Hawaiian Islands should monitor the progress of Kiko. DISCUSSION AND OUTLOOK ---------------------- At 500 PM HST (0300 UTC), the center of Tropical Storm Kiko was located near latitude 22.9 North, longitude 156.3 West. Kiko is moving toward the west-northwest near 14 mph (22 km/h) and this motion is expected to continue for the next few days, while passing north of the main Hawaiian Islands. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Weakening is expected, and the system is forecast to become post-tropical in a couple days. Tropical-storm-force winds extend outward up to 90 miles (150 km) to the north of the center. The estimated minimum central pressure is 1008 mb (29.77 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Kiko can be found in the Tropical Cyclone Discussion under AWIPS header HFOTCDCP4 and WMO header WTPA44 PHFO. SURF: Swells generated by Kiko are building from east to west across the exposed Hawaiian waters and are forecast to peak tonight through Wednesday, potentially producing life-threatening surf and rip currents. Refer to the latest updates and forecasts issued from the National Weather Service in Honolulu, Hawaii. NEXT ADVISORY ------------- Next complete advisory at 1100 PM HST. $$ Forecaster Beven NNNN

... KIKO STILL A TROPICAL STORM AND IS PRODUCING LIFE-THREATENING RIP CURRENTS AND HIGH SURF ACROSS PORTIONS OF HAWAIIAN ISLANDS... As of 5:00 PM HST Tue Sep 09 the center of Kiko was located near 22.9, -156.3 with movement WNW at 14 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 40 mph.

Issued at 0300 UTC WED SEP 10 2025 ZCZC HFOTCMCP4 ALL TTAA00 PHFO DDHHMM TROPICAL STORM KIKO FORECAST/ADVISORY NUMBER 40 NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI EP112025 ISSUED BY NWS NATIONAL HURRICANE CENTER MIAMI FL 0300 UTC WED SEP 10 2025 TROPICAL STORM CENTER LOCATED NEAR 22.9N 156.3W AT 10/0300Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 12 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1008 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 80NE 0SE 0SW 60NW. 4 M SEAS....180NE 60SE 60SW 150NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 22.9N 156.3W AT 10/0300Z AT 10/0000Z CENTER WAS LOCATED NEAR 22.7N 155.7W FORECAST VALID 10/1200Z 23.4N 158.2W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 60NE 0SE 0SW 40NW. FORECAST VALID 11/0000Z 24.1N 160.5W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 11/1200Z 24.8N 162.6W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 12/0000Z 25.6N 164.6W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 12/1200Z 26.2N 166.5W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 13/0000Z 26.7N 168.3W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY OUTLOOK VALID 14/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 22.9N 156.3W NEXT ADVISORY AT 10/0900Z $$ FORECASTER BEVEN NNNN

WW 0609 Status Updates
STATUS REPORT ON WW 609 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..SPC..09/10/25 ATTN...WFO...PUB...GLD...DDC... STATUS REPORT FOR WS 609 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC011-017-061-063-099-125-100340- CO . COLORADO COUNTIES INCLUDED ARE BENT CHEYENNE KIOWA KIT CARSON PROWERS YUMA KSC023-055-067-071-075-081-093-109-171-181-187-193-199-203- 100340- KS . KANSAS COUNTIES INCLUDED ARE CHEYENNE FINNEY GRANT GREELEY HAMILTON HASKELL KEARNY LOGAN SCOTT SHERMAN STANTON THOMAS WALLACE WICHITA 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 609 SEVERE TSTM CO KS 092050Z - 100300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 609 NWS Storm Prediction Center Norman OK 250 PM MDT Tue Sep 9 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Eastern Colorado Western Kansas * Effective this Tuesday afternoon and evening from 250 PM until 900 PM MDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2.5 inches in diameter possible Scattered damaging wind gusts to 70 mph possible SUMMARY...Thunderstorms are expected to develop and intensify through the late afternoon and early evening across the watch area. Large hail will be the main concern, along with gusty winds in the strongest storms. The severe thunderstorm watch area is approximately along and 70 statute miles north and south of a line from 45 miles west southwest of Burlington CO to 30 miles north of Garden City KS. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). 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 2.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 34015. ...Hart Read more

MD 2056 CONCERNING SEVERE THUNDERSTORM WATCH 609... FOR CENTRAL HIGH PLAINS
Mesoscale Discussion 2056 NWS Storm Prediction Center Norman OK 0726 PM CDT Tue Sep 09 2025 Areas affected...Central High Plains Concerning...Severe Thunderstorm Watch 609... Valid 100026Z - 100230Z The severe weather threat for Severe Thunderstorm Watch 609 continues. SUMMARY...Hail threat is expected to persist with storms this evening, along with some wind risk. DISCUSSION...Isolated strong-severe thunderstorms are shifting slowly southeast across the central High Plains this evening. Strong boundary-layer heating has proven instrumental in this activity attaining severe levels as lapse rates are seasonally steep across this region. However, over the next few hours, nocturnal cooling will lead to increasing CINH and surface-based updrafts should being to struggle as they decouple from the boundary layer. 00z sounding from DDC exhibits this trend with weak inhibition noted around 1km. Even so, LLJ is forecast to increase after sunset and this should aid one or more elevated thunderstorm clusters that should propagate across western KS. Hail is the primary concern with this activity. ..Darrow.. 09/10/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DDC...GLD...PUB...BOU... LAT...LON 40000304 39380072 37350072 37980304 40000304 MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN Read more