Hurricane Kiko Forecast Discussion Number 17

5 years 10 months ago
Issued at 800 AM PDT Mon Sep 16 2019 000 WTPZ43 KNHC 161451 TCDEP3 Hurricane Kiko Discussion Number 17 NWS National Hurricane Center Miami FL EP132019 800 AM PDT Mon Sep 16 2019 Microwave data and satellite imagery continue to indicate that the core of Kiko is being disrupted. While there is a seemingly favorable outflow pattern, northeasterly shear is undercutting the top layer and preventing the cyclone from having a closed eyewall. Satellite estimates are falling and support a perhaps-generous initial wind speed of 90 kt. The shear is forecast to continue during the next day or so, which should promote further weakening. After that time, the shear could lessen, although the environment overall is hardly very conducive for strengthening, and this scenario would best support little change in intensity. By Friday-Saturday, model guidance does show an increase in shear, so a more notable weakening could occur. The new NHC intensity forecast is reduced from the previous one, following the trend in the guidance, but is a bit above the model consensus. A fair number of models actually show a weaker cyclone, but in a complex environment, I'd rather be conservative in changing the longer-range intensity forecast. There's no significant track change to report with Kiko. The hurricane is moving westward at 4 kt, to the south of a weak mid-level ridge. By 36 hours, another ridge building to the northwest of the hurricane will begin to steer Kiko to the west-southwest. This ridge is then forecast to weaken by 72 hours, while subtropical ridging builds to the north and northeast of the cyclone. This will likely result in a general westward to west-northwestward track through the end of the forecast period. The new forecast track is close to the previous one, on the faster and southern side of the guidance, which has generally been the right place to be with Kiko's track. FORECAST POSITIONS AND MAX WINDS INIT 16/1500Z 17.3N 123.7W 90 KT 105 MPH 12H 17/0000Z 17.3N 124.3W 80 KT 90 MPH 24H 17/1200Z 17.2N 125.1W 70 KT 80 MPH 36H 18/0000Z 16.9N 126.0W 65 KT 75 MPH 48H 18/1200Z 16.7N 127.0W 60 KT 70 MPH 72H 19/1200Z 16.9N 129.1W 60 KT 70 MPH 96H 20/1200Z 17.3N 130.7W 55 KT 65 MPH 120H 21/1200Z 17.3N 132.5W 45 KT 50 MPH $$ Forecaster Blake
NHC Webmaster

Hurricane Kiko Wind Speed Probabilities Number 17

5 years 10 months ago
Issued at 1500 UTC MON SEP 16 2019 000 FOPZ13 KNHC 161450 PWSEP3 HURRICANE KIKO WIND SPEED PROBABILITIES NUMBER 17 NWS NATIONAL HURRICANE CENTER MIAMI FL EP132019 1500 UTC MON SEP 16 2019 AT 1500Z THE CENTER OF HURRICANE KIKO WAS LOCATED NEAR LATITUDE 17.3 NORTH...LONGITUDE 123.7 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 90 KTS...105 MPH...165 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 12Z MON 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 12Z MON 00Z TUE 12Z TUE 00Z WED 12Z WED 12Z THU 12Z FRI PERIODS TO TO TO TO TO TO TO 00Z TUE 12Z TUE 00Z WED 12Z WED 12Z THU 12Z FRI 12Z SAT FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 15N 125W 34 1 4( 5) 10(15) 5(20) 4(24) 1(25) X(25) 15N 125W 50 X X( X) 1( 1) 1( 2) 1( 3) X( 3) X( 3) 20N 125W 34 1 1( 2) 3( 5) 3( 8) 3(11) X(11) 1(12) 15N 130W 34 X X( X) 3( 3) 2( 5) 18(23) 10(33) 3(36) 15N 130W 50 X X( X) X( X) X( X) 3( 3) 5( 8) X( 8) 15N 130W 64 X X( X) X( X) X( X) X( X) 3( 3) X( 3) 20N 130W 34 X X( X) 1( 1) 2( 3) 7(10) 8(18) 3(21) 20N 130W 50 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) 15N 135W 34 X X( X) X( X) X( X) X( X) 2( 2) 3( 5) 20N 135W 34 X X( X) X( X) X( X) X( X) 2( 2) 3( 5) $$ FORECASTER BLAKE
NHC Webmaster

Hurricane Kiko Public Advisory Number 17

5 years 10 months ago
Issued at 800 AM PDT Mon Sep 16 2019 000 WTPZ33 KNHC 161450 TCPEP3 BULLETIN Hurricane Kiko Advisory Number 17 NWS National Hurricane Center Miami FL EP132019 800 AM PDT Mon Sep 16 2019 ...KIKO CONTINUES TO WEAKEN... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...17.3N 123.7W ABOUT 975 MI...1570 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...105 MPH...165 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...971 MB...28.68 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 AM PDT (1500 UTC), the center of Hurricane Kiko was located near latitude 17.3 North, longitude 123.7 West. Kiko is moving toward the west near 5 mph (7 km/h), and this motion is expected to continue through tonight. A west-southwestward motion is forecast for Tuesday and Tuesday night, followed by a turn back to the west on Wednesday. Maximum sustained winds have decreased to near 105 mph (165 km/h) with higher gusts. Gradual weakening is expected during the next couple of days. Kiko is a small tropical cyclone. Hurricane-force winds extend outward up to 15 miles (30 km) from the center and tropical-storm- force winds extend outward up to 60 miles (95 km). The estimated minimum central pressure is 971 mb (28.68 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 200 PM PDT. $$ Forecaster Blake
NHC Webmaster

Hurricane Kiko Forecast Advisory Number 17

5 years 10 months ago
Issued at 1500 UTC MON SEP 16 2019 000 WTPZ23 KNHC 161450 TCMEP3 HURRICANE KIKO FORECAST/ADVISORY NUMBER 17 NWS NATIONAL HURRICANE CENTER MIAMI FL EP132019 1500 UTC MON SEP 16 2019 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. HURRICANE CENTER LOCATED NEAR 17.3N 123.7W AT 16/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 4 KT ESTIMATED MINIMUM CENTRAL PRESSURE 971 MB MAX SUSTAINED WINDS 90 KT WITH GUSTS TO 110 KT. 64 KT....... 15NE 15SE 15SW 15NW. 50 KT....... 30NE 30SE 30SW 30NW. 34 KT....... 50NE 50SE 50SW 50NW. 12 FT SEAS..120NE 90SE 75SW 120NW. 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 17.3N 123.7W AT 16/1500Z AT 16/1200Z CENTER WAS LOCATED NEAR 17.3N 123.5W FORECAST VALID 17/0000Z 17.3N 124.3W MAX WIND 80 KT...GUSTS 100 KT. 64 KT... 15NE 10SE 10SW 15NW. 50 KT... 30NE 30SE 30SW 30NW. 34 KT... 50NE 50SE 50SW 50NW. FORECAST VALID 17/1200Z 17.2N 125.1W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 15NE 10SE 10SW 15NW. 50 KT... 30NE 30SE 30SW 30NW. 34 KT... 50NE 50SE 50SW 50NW. FORECAST VALID 18/0000Z 16.9N 126.0W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 15NE 0SE 0SW 10NW. 50 KT... 30NE 20SE 20SW 30NW. 34 KT... 50NE 50SE 50SW 50NW. FORECAST VALID 18/1200Z 16.7N 127.0W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 30NE 20SE 20SW 30NW. 34 KT... 50NE 50SE 50SW 50NW. FORECAST VALID 19/1200Z 16.9N 129.1W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 30NE 20SE 20SW 30NW. 34 KT... 50NE 50SE 40SW 50NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM ON DAY 4 AND 150 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 20/1200Z 17.3N 130.7W MAX WIND 55 KT...GUSTS 65 KT. OUTLOOK VALID 21/1200Z 17.3N 132.5W MAX WIND 45 KT...GUSTS 55 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.3N 123.7W NEXT ADVISORY AT 16/2100Z $$ FORECASTER BLAKE
NHC Webmaster

SPC Sep 16, 2019 1300 UTC Day 1 Convective Outlook

5 years 10 months ago
SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0746 AM CDT Mon Sep 16 2019 Valid 161300Z - 171200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are unlikely today and tonight. ...Synopsis... A deep midlevel trough, with associated cool midlevel temperatures and steep lapse rates, will continue to progress inland over the Pacific Coast today and the Great Basin tonight. A few low-topped thunderstorms will be possible the first part of the day along the cold front in northeast CA, while occasional storms will spread inland across OR to northwest NV by this evening. Farther south and east, the cold front will cross NV this evening and reach UT tonight. The monsoonal moisture plume will likely remain east of the front and associated ascent, which casts substantial doubt on the potential for thunderstorms along the front tonight. In response to the Pacific Coast trough, a weakening subtropical shortwave trough over NM/CO will eject northeastward toward the eastern Dakotas/MN and could support some elevated convection near the end of the forecast period. Scattered thunderstorms are likely through tonight near the northwest Gulf coast with a weak tropical disturbance. The convection should spread inland this afternoon with outflows, and then consolidate tonight near the middle and upper TX coast. ..Thompson/Gleason.. 09/16/2019 Read more

SPC Sep 16, 2019 1300 UTC Day 1 Convective Outlook

5 years 10 months ago
SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0746 AM CDT Mon Sep 16 2019 Valid 161300Z - 171200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are unlikely today and tonight. ...Synopsis... A deep midlevel trough, with associated cool midlevel temperatures and steep lapse rates, will continue to progress inland over the Pacific Coast today and the Great Basin tonight. A few low-topped thunderstorms will be possible the first part of the day along the cold front in northeast CA, while occasional storms will spread inland across OR to northwest NV by this evening. Farther south and east, the cold front will cross NV this evening and reach UT tonight. The monsoonal moisture plume will likely remain east of the front and associated ascent, which casts substantial doubt on the potential for thunderstorms along the front tonight. In response to the Pacific Coast trough, a weakening subtropical shortwave trough over NM/CO will eject northeastward toward the eastern Dakotas/MN and could support some elevated convection near the end of the forecast period. Scattered thunderstorms are likely through tonight near the northwest Gulf coast with a weak tropical disturbance. The convection should spread inland this afternoon with outflows, and then consolidate tonight near the middle and upper TX coast. ..Thompson/Gleason.. 09/16/2019 Read more

SPC Sep 16, 2019 1300 UTC Day 1 Convective Outlook

5 years 10 months ago
SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0746 AM CDT Mon Sep 16 2019 Valid 161300Z - 171200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are unlikely today and tonight. ...Synopsis... A deep midlevel trough, with associated cool midlevel temperatures and steep lapse rates, will continue to progress inland over the Pacific Coast today and the Great Basin tonight. A few low-topped thunderstorms will be possible the first part of the day along the cold front in northeast CA, while occasional storms will spread inland across OR to northwest NV by this evening. Farther south and east, the cold front will cross NV this evening and reach UT tonight. The monsoonal moisture plume will likely remain east of the front and associated ascent, which casts substantial doubt on the potential for thunderstorms along the front tonight. In response to the Pacific Coast trough, a weakening subtropical shortwave trough over NM/CO will eject northeastward toward the eastern Dakotas/MN and could support some elevated convection near the end of the forecast period. Scattered thunderstorms are likely through tonight near the northwest Gulf coast with a weak tropical disturbance. The convection should spread inland this afternoon with outflows, and then consolidate tonight near the middle and upper TX coast. ..Thompson/Gleason.. 09/16/2019 Read more

SPC Sep 16, 2019 1300 UTC Day 1 Convective Outlook

5 years 10 months ago
SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0746 AM CDT Mon Sep 16 2019 Valid 161300Z - 171200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are unlikely today and tonight. ...Synopsis... A deep midlevel trough, with associated cool midlevel temperatures and steep lapse rates, will continue to progress inland over the Pacific Coast today and the Great Basin tonight. A few low-topped thunderstorms will be possible the first part of the day along the cold front in northeast CA, while occasional storms will spread inland across OR to northwest NV by this evening. Farther south and east, the cold front will cross NV this evening and reach UT tonight. The monsoonal moisture plume will likely remain east of the front and associated ascent, which casts substantial doubt on the potential for thunderstorms along the front tonight. In response to the Pacific Coast trough, a weakening subtropical shortwave trough over NM/CO will eject northeastward toward the eastern Dakotas/MN and could support some elevated convection near the end of the forecast period. Scattered thunderstorms are likely through tonight near the northwest Gulf coast with a weak tropical disturbance. The convection should spread inland this afternoon with outflows, and then consolidate tonight near the middle and upper TX coast. ..Thompson/Gleason.. 09/16/2019 Read more

Eastern North Pacific Tropical Weather Outlook

5 years 10 months ago

000
ABPZ20 KNHC 161145
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Mon Sep 16 2019

For the eastern North Pacific...east of 140 degrees west longitude:

The National Hurricane Center is issuing advisories on Hurricane
Kiko, located in the southwestern part of the basin.

Showers and thunderstorms are showing signs of organization in
association with an area of low pressure centered several hundred
miles south-southwest of Manzanillo, Mexico. Conditions are
conducive for additional development, and a tropical depression
is likely to form within the next two to three days. After mid
week, this system is forecast to interact or merge with the
disturbance to its east, and further development could be limited.
* Formation chance through 48 hours...medium...60 percent.
* Formation chance through 5 days...high...70 percent.

An area of low pressure located a few hundred miles south-southwest
of the Gulf of Tehuantepec has become better defined overnight, and
the associated thunderstorm activity has also increased.
Environmental conditions are forecast to be conducive for further
development, and a tropical depression is expected to form around
the middle of the week as the system moves west-northwestward near,
or parallel to, the coast of Mexico.
* Formation chance through 48 hours...medium...60 percent.
* Formation chance through 5 days...high...80 percent.

A large area of cloudiness and showers near and just west of
Central America is associated with a tropical wave. Gradual
development of this system is possible during the next several days
while the wave moving westward or west-northwestward at 5 to 10 mph.
Locally heavy rainfall is also possible along the coasts of El
Salvador, Guatemala and southeastern Mexico this week.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 5 days...low...30 percent.

$$
Forecaster Blake
NHC Webmaster

SPC Sep 16, 2019 Day 4-8 Severe Weather Outlook

5 years 10 months ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0345 AM CDT Mon Sep 16 2019 Valid 191200Z - 241200Z ...DISCUSSION... Amplified mid-level troughing, within a southern branch of split westerlies, appears likely to accelerate northeastward out of the Intermountain West late this work week. The latest medium-range guidance suggests that there may be phasing with a northern branch perturbation, with associated forcing for ascent contributing to fairly significant surface cyclogenesis across and north of the central Canadian/U.S. border area by early next weekend. Friday (Day 5), it appears that the warm sector of the deepening cyclone may become characterized by moderately large CAPE on the order of 2000+ J/kg, in the presence of strengthening lower/mid tropospheric wind fields (including south to southwesterly at 40-50+ kt in the 850-500 mb layer), across parts of the eastern Dakotas into Minnesota. This may provide the most favorable support for organized severe thunderstorm development during the period, with the evolution of a few supercells and a squall line possible late Friday afternoon and evening. The westerlies may then transition to less amplified and split across the U.S. next weekend into early next week, downstream of broad mid-level ridging developing eastward across the mid-latitude eastern Pacific, toward the Pacific coast. Read more

SPC Sep 16, 2019 Day 4-8 Severe Weather Outlook

5 years 10 months ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0345 AM CDT Mon Sep 16 2019 Valid 191200Z - 241200Z ...DISCUSSION... Amplified mid-level troughing, within a southern branch of split westerlies, appears likely to accelerate northeastward out of the Intermountain West late this work week. The latest medium-range guidance suggests that there may be phasing with a northern branch perturbation, with associated forcing for ascent contributing to fairly significant surface cyclogenesis across and north of the central Canadian/U.S. border area by early next weekend. Friday (Day 5), it appears that the warm sector of the deepening cyclone may become characterized by moderately large CAPE on the order of 2000+ J/kg, in the presence of strengthening lower/mid tropospheric wind fields (including south to southwesterly at 40-50+ kt in the 850-500 mb layer), across parts of the eastern Dakotas into Minnesota. This may provide the most favorable support for organized severe thunderstorm development during the period, with the evolution of a few supercells and a squall line possible late Friday afternoon and evening. The westerlies may then transition to less amplified and split across the U.S. next weekend into early next week, downstream of broad mid-level ridging developing eastward across the mid-latitude eastern Pacific, toward the Pacific coast. Read more

SPC Sep 16, 2019 Day 4-8 Severe Weather Outlook

5 years 10 months ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0345 AM CDT Mon Sep 16 2019 Valid 191200Z - 241200Z ...DISCUSSION... Amplified mid-level troughing, within a southern branch of split westerlies, appears likely to accelerate northeastward out of the Intermountain West late this work week. The latest medium-range guidance suggests that there may be phasing with a northern branch perturbation, with associated forcing for ascent contributing to fairly significant surface cyclogenesis across and north of the central Canadian/U.S. border area by early next weekend. Friday (Day 5), it appears that the warm sector of the deepening cyclone may become characterized by moderately large CAPE on the order of 2000+ J/kg, in the presence of strengthening lower/mid tropospheric wind fields (including south to southwesterly at 40-50+ kt in the 850-500 mb layer), across parts of the eastern Dakotas into Minnesota. This may provide the most favorable support for organized severe thunderstorm development during the period, with the evolution of a few supercells and a squall line possible late Friday afternoon and evening. The westerlies may then transition to less amplified and split across the U.S. next weekend into early next week, downstream of broad mid-level ridging developing eastward across the mid-latitude eastern Pacific, toward the Pacific coast. Read more

SPC Sep 16, 2019 Day 4-8 Severe Weather Outlook

5 years 10 months ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0345 AM CDT Mon Sep 16 2019 Valid 191200Z - 241200Z ...DISCUSSION... Amplified mid-level troughing, within a southern branch of split westerlies, appears likely to accelerate northeastward out of the Intermountain West late this work week. The latest medium-range guidance suggests that there may be phasing with a northern branch perturbation, with associated forcing for ascent contributing to fairly significant surface cyclogenesis across and north of the central Canadian/U.S. border area by early next weekend. Friday (Day 5), it appears that the warm sector of the deepening cyclone may become characterized by moderately large CAPE on the order of 2000+ J/kg, in the presence of strengthening lower/mid tropospheric wind fields (including south to southwesterly at 40-50+ kt in the 850-500 mb layer), across parts of the eastern Dakotas into Minnesota. This may provide the most favorable support for organized severe thunderstorm development during the period, with the evolution of a few supercells and a squall line possible late Friday afternoon and evening. The westerlies may then transition to less amplified and split across the U.S. next weekend into early next week, downstream of broad mid-level ridging developing eastward across the mid-latitude eastern Pacific, toward the Pacific coast. Read more

Hurricane Kiko Forecast Discussion Number 16

5 years 10 months ago
Issued at 200 AM PDT Mon Sep 16 2019 000 WTPZ43 KNHC 160839 TCDEP3 Hurricane Kiko Discussion Number 16 NWS National Hurricane Center Miami FL EP132019 200 AM PDT Mon Sep 16 2019 Microwave data and satellite imagery are indicating that northeasterly shear is disrupting the core of hurricane Kiko. There is no eye evident, and the central dense overcast has become less symmetric. A blend of the latest subjective intensity estimates from TAFB and SAB support lowering the initial advisory intensity to 100 kt. Kiko is moving westward at 5 kt, to the south of a weak mid-level ridge. By 36 hours, a ridge building to the northwest of the hurricane will begin to steer it to the west-southwest. This ridge is then forecast to weaken by 72 hours, while ridging builds to the north and northeast of the cyclone. This will result in a general west to west-northwestward track through the end of the forecast period. The latest NHC forecast track was nudged slightly southward, and is in between the consensus aids TVCE and HCCA. The northeasterly shear currently impacting Kiko is forecast to persist for the next 24 hours or so. The shear should subside between 24-72 hours, but at the same time, increasing subsidence from the building ridge to the northwest should have a counteractive affect on the lower shear. After 72 hours, an upper level trough approaching from the northwest is expected to cause strong southwesterly shear to affect the cyclone. The official forecast is in general agreement with the various intensity aids, and shows gradual weakening through 36 hours, and then levels off the intensity until 72 hours before resuming a weakening trend. FORECAST POSITIONS AND MAX WINDS INIT 16/0900Z 17.2N 123.1W 100 KT 115 MPH 12H 16/1800Z 17.2N 123.8W 90 KT 105 MPH 24H 17/0600Z 17.2N 124.7W 80 KT 90 MPH 36H 17/1800Z 17.0N 125.5W 75 KT 85 MPH 48H 18/0600Z 16.8N 126.4W 70 KT 80 MPH 72H 19/0600Z 17.0N 128.3W 70 KT 80 MPH 96H 20/0600Z 17.2N 130.0W 65 KT 75 MPH 120H 21/0600Z 17.3N 131.5W 55 KT 65 MPH $$ Forecaster Latto
NHC Webmaster

Hurricane Kiko Wind Speed Probabilities Number 16

5 years 10 months ago
Issued at 0900 UTC MON SEP 16 2019 000 FOPZ13 KNHC 160839 PWSEP3 HURRICANE KIKO WIND SPEED PROBABILITIES NUMBER 16 NWS NATIONAL HURRICANE CENTER MIAMI FL EP132019 0900 UTC MON SEP 16 2019 AT 0900Z THE CENTER OF HURRICANE KIKO WAS LOCATED NEAR LATITUDE 17.2 NORTH...LONGITUDE 123.1 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 100 KTS...115 MPH...185 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 06Z MON 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 06Z MON 18Z MON 06Z TUE 18Z TUE 06Z WED 06Z THU 06Z FRI PERIODS TO TO TO TO TO TO TO 18Z MON 06Z TUE 18Z TUE 06Z WED 06Z THU 06Z FRI 06Z SAT FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 15N 125W 34 1 5( 6) 15(21) 8(29) 6(35) 2(37) X(37) 15N 125W 50 X 1( 1) 1( 2) 2( 4) 2( 6) X( 6) X( 6) 20N 125W 34 1 2( 3) 3( 6) 4(10) 4(14) 2(16) X(16) 15N 130W 34 X X( X) 1( 1) 3( 4) 16(20) 14(34) 6(40) 15N 130W 50 X X( X) X( X) X( X) 2( 2) 6( 8) 2(10) 15N 130W 64 X X( X) X( X) X( X) X( X) 3( 3) 1( 4) 20N 130W 34 X X( X) 1( 1) 2( 3) 7(10) 11(21) 5(26) 20N 130W 50 X X( X) X( X) X( X) X( X) 3( 3) 1( 4) 20N 130W 64 X X( X) X( X) X( X) X( X) 1( 1) 1( 2) 15N 135W 34 X X( X) X( X) X( X) X( X) 2( 2) 3( 5) 20N 135W 34 X X( X) X( X) X( X) X( X) 1( 1) 4( 5) $$ FORECASTER LATTO
NHC Webmaster

Hurricane Kiko Public Advisory Number 16

5 years 10 months ago
Issued at 200 AM PDT Mon Sep 16 2019 000 WTPZ33 KNHC 160839 TCPEP3 BULLETIN Hurricane Kiko Advisory Number 16 NWS National Hurricane Center Miami FL EP132019 200 AM PDT Mon Sep 16 2019 ...KIKO NOW WEAKENING AS IT CONTINUES WESTWARD... SUMMARY OF 200 AM PDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...17.2N 123.1W ABOUT 940 MI...1515 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...963 MB...28.44 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 200 AM PDT (0900 UTC), the center of Hurricane Kiko was located near latitude 17.2 North, longitude 123.1 West. Kiko is moving toward the west near 6 mph (9 km/h) and this motion is expected to continue through tonight. A west-southwestward motion is expected Tuesday and Tuesday night, followed by a turn back to the west on Wednesday. Maximum sustained winds are near 115 mph (185 km/h) with higher gusts. Kiko is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. Gradual weakening is expected during the next couple of days. Hurricane-force winds extend outward up to 15 miles (30 km) from the center and tropical-storm-force winds extend outward up to 60 miles (95 km). The estimated minimum central pressure is 963 mb (28.44 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 800 AM PDT. $$ Forecaster Latto
NHC Webmaster