National Hurricane Center (NHC) Pacific Map

000
ABPZ20 KNHC 130540
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 PM PDT Thu Sep 12 2019

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

The National Hurricane Center is issuing advisories on Tropical
Storm Kiko, located several hundred miles south-southwest of the
southern tip of the Baja California peninsula.

Showers and thunderstorms associated with a tropical wave located
about 1600 miles west-southwest of the southern tip of the Baja
California peninsula remain disorganized. Environmental conditions
do not appear particularly conducive for development of this system
while it meanders near its current location during the next couple
of days.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 5 days...low...10 percent.

Another tropical wave located a few hundred miles south-southwest
of Acapulco, Mexico, is also producing disorganized showers and
thunderstorms, mainly to the west of the wave axis. Some slow
development is possible into next week while the system moves
generally westward at 5 to 10 mph.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 5 days...low...30 percent.

An area of low pressure is expected to form west of the coast of
Central America over the weekend. Environmental conditions are
forecast to be conducive for development, and a tropical
depression will likely form by the middle of next week while the
system moves west-northwestward parallel to the coast of Mexico.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...high...70 percent.

&&
Public Advisories on Kiko are issued under WMO header WTPZ33 KNHC
and under AWIPS header MIATCPEP3. Forecast/Advisories on Kiko are
issued under WMO header WTPZ23 KNHC and under AWIPS header
MIATCMEP3.

$$
Forecaster Berg

5-Day Uncertainty Track last updated Fri, 13 Sep 2019 02:40:58 GMT


Wind Speed Probabilities last updated Fri, 13 Sep 2019 03:31:17 GMT

Issued at 900 PM MDT Thu Sep 12 2019 000 WTPZ43 KNHC 130240 TCDEP3 Tropical Storm Kiko Discussion Number 3 NWS National Hurricane Center Miami FL EP132019 900 PM MDT Thu Sep 12 2019 A pair of recent microwave overpasses (AMSR-2 at 2055 UTC and SSMIS at 0020 UTC) revealed that Kiko has not become any better organized since this afternoon. Thunderstorm activity is somewhat limited near the center of the tropical cyclone, though this is likely related to diurnal variations in convection, and convection will probably increase again overnight. Subjective and objective intensity estimates range from 30 to 40 kt, so the intensity has been maintained at 35 kt, as a compromise of the various methods. Despite its short-term lack of organization, Kiko will likely strengthen during the next 2 or 3 days. It is located within an environment consisting of low shear, sufficient moisture, and warm SSTs. All of the intensity guidance calls for strengthening, and the only difference between the models is the rate at which Kiko will intensify. The NHC forecast has not been substantially changed and still calls for Kiko to become a hurricane over the weekend. It is also near the high side of the intensity model envelope, especially between 24 and 72 h. By 72 h, the cyclone should reach cooler waters and begin to encounter drier air. Weakening will likely begin around that time and continue into mid-week. Kiko's center appears to have jumped slightly to the north, or perhaps even re-formed, but a 12-h estimate yields an initial motion of 300/9 kt. The models remain in very good agreement that the tropical storm will move generally westward to west-northwestward throughout the forecast period, steered primarily by a mid-layer ridge centered over the southwestern U.S. The NHC track forecast has been adjusted northward, mainly due to the farther north initial position of Kiko, and closely follows the HCCA and TVCE aids. FORECAST POSITIONS AND MAX WINDS INIT 13/0300Z 16.6N 112.7W 35 KT 40 MPH 12H 13/1200Z 16.9N 114.0W 40 KT 45 MPH 24H 14/0000Z 17.3N 115.7W 50 KT 60 MPH 36H 14/1200Z 17.9N 117.5W 65 KT 75 MPH 48H 15/0000Z 18.4N 119.3W 70 KT 80 MPH 72H 16/0000Z 19.5N 122.9W 70 KT 80 MPH 96H 17/0000Z 20.5N 125.5W 50 KT 60 MPH 120H 18/0000Z 21.0N 128.0W 40 KT 45 MPH $$ Forecaster Zelinsky

Issued at 0300 UTC FRI SEP 13 2019 000 FOPZ13 KNHC 130239 PWSEP3 TROPICAL STORM KIKO WIND SPEED PROBABILITIES NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL EP132019 0300 UTC FRI SEP 13 2019 AT 0300Z THE CENTER OF TROPICAL STORM KIKO WAS LOCATED NEAR LATITUDE 16.6 NORTH...LONGITUDE 112.7 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 FRI 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 FRI 12Z FRI 00Z SAT 12Z SAT 00Z SUN 00Z MON 00Z TUE PERIODS TO TO TO TO TO TO TO 12Z FRI 00Z SAT 12Z SAT 00Z SUN 00Z MON 00Z TUE 00Z WED FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT ISLA CLARION 34 1 7( 8) 3(11) 2(13) X(13) X(13) X(13) 15N 115W 34 X 1( 1) 2( 3) 1( 4) 1( 5) X( 5) X( 5) 20N 115W 34 X 1( 1) 3( 4) 2( 6) X( 6) X( 6) X( 6) 15N 120W 34 X X( X) 3( 3) 3( 6) 4(10) X(10) X(10) 20N 120W 34 X X( X) 3( 3) 28(31) 25(56) 1(57) X(57) 20N 120W 50 X X( X) X( X) 4( 4) 14(18) X(18) X(18) 20N 120W 64 X X( X) X( X) 1( 1) 6( 7) X( 7) X( 7) 15N 125W 34 X X( X) X( X) X( X) 2( 2) 2( 4) 1( 5) 20N 125W 34 X X( X) X( X) X( X) 25(25) 31(56) 4(60) 20N 125W 50 X X( X) X( X) X( X) 3( 3) 17(20) 1(21) 20N 125W 64 X X( X) X( X) X( X) 1( 1) 6( 7) X( 7) 25N 125W 34 X X( X) X( X) X( X) X( X) 3( 3) 1( 4) 20N 130W 34 X X( X) X( X) X( X) X( X) 2( 2) 7( 9) $$ FORECASTER ZELINSKY

Issued at 0300 UTC FRI SEP 13 2019 000 WTPZ23 KNHC 130239 TCMEP3 TROPICAL STORM KIKO FORECAST/ADVISORY NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL EP132019 0300 UTC FRI SEP 13 2019 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 16.6N 112.7W AT 13/0300Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 9 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1004 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 0SE 0SW 80NW. 12 FT SEAS.. 0NE 0SE 0SW 90NW. 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 16.6N 112.7W AT 13/0300Z AT 13/0000Z CENTER WAS LOCATED NEAR 16.4N 112.2W FORECAST VALID 13/1200Z 16.9N 114.0W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 40NE 0SE 0SW 80NW. FORECAST VALID 14/0000Z 17.3N 115.7W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 20NE 0SE 0SW 20NW. 34 KT... 60NE 40SE 40SW 60NW. FORECAST VALID 14/1200Z 17.9N 117.5W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 15NE 0SE 0SW 15NW. 50 KT... 30NE 20SE 20SW 30NW. 34 KT... 60NE 50SE 50SW 60NW. FORECAST VALID 15/0000Z 18.4N 119.3W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 15NE 10SE 10SW 15NW. 50 KT... 30NE 20SE 20SW 30NW. 34 KT... 60NE 50SE 50SW 60NW. FORECAST VALID 16/0000Z 19.5N 122.9W MAX WIND 70 KT...GUSTS 85 KT. 50 KT... 30NE 30SE 20SW 30NW. 34 KT... 60NE 50SE 50SW 60NW. 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 17/0000Z 20.5N 125.5W MAX WIND 50 KT...GUSTS 60 KT. OUTLOOK VALID 18/0000Z 21.0N 128.0W MAX WIND 40 KT...GUSTS 50 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.6N 112.7W NEXT ADVISORY AT 13/0900Z $$ FORECASTER ZELINSKY

Issued at 900 PM MDT Thu Sep 12 2019 000 WTPZ33 KNHC 130239 TCPEP3 BULLETIN Tropical Storm Kiko Advisory Number 3 NWS National Hurricane Center Miami FL EP132019 900 PM MDT Thu Sep 12 2019 ...KIKO POISED TO STRENGTHEN... ...FORECAST TO BECOME A HURRICANE BY THE WEEKEND... SUMMARY OF 900 PM MDT...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...16.6N 112.7W ABOUT 470 MI...760 KM SSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 300 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 900 PM MDT (0300 UTC), the center of Tropical Storm Kiko was located near latitude 16.6 North, longitude 112.7 West. Kiko is moving toward the west-northwest near 10 mph (17 km/h). A westward to west-northwestward motion at a similar forward speed is expected for the next several days. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Strengthening is anticipated, and Kiko is forecast to become a hurricane over the weekend. Tropical-storm-force winds extend outward up to 90 miles (150 km) from the center. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 300 AM MDT. $$ Forecaster Zelinsky

...KIKO POISED TO STRENGTHEN... ...FORECAST TO BECOME A HURRICANE BY THE WEEKEND... As of 9:00 PM MDT Thu Sep 12 the center of Kiko was located near 16.6, -112.7 with movement WNW at 10 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 40 mph.

000
ABPZ20 KNHC 122353
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 PM PDT Thu Sep 12 2019

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

The National Hurricane Center is issuing advisories on recently
named Tropical Storm Kiko, located several hundred miles
south-southwest of the southern tip of Baja California.

Showers and thunderstorms associated with a tropical wave located a
little more than 1500 miles west-southwest of the southern tip of
the Baja California peninsula have decreased since this morning.
Some gradual development of this system is still possible during the
next couple of days while the wave moves slowly westward at 5 to 10
mph. Strong upper-level winds are expected to limit the chance for
development by late this weekend.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...low...20 percent.

Another tropical wave, located a few hundred miles southwest of
Acapulco, Mexico, continues to produce an area of disorganized
showers and thunderstorms. Some slow development of this system is
possible through early next week as it moves westward or
west-northwestward at 5 to 10 mph.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 5 days...low...30 percent.

An area of low pressure is expected to form west of the coast of
Central America over the weekend. Environmental conditions are
forecast to be conducive for development and a tropical
depression could form early next week while the system moves
westward well south of the southern coast of Mexico.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...medium...60 percent.

&&
Public Advisories on Tropical Storm Kiko are issued under WMO header
WTPZ33 KNHC and under AWIPS header MIATCPEP3.
Forecast/Advisories on Tropical Storm Kiko are issued under WMO
header WTPZ23 KNHC and under AWIPS header MIATCMEP3.

$$
Forecaster Zelinsky

5-Day Uncertainty Track last updated Thu, 12 Sep 2019 20:46:08 GMT


Wind Speed Probabilities last updated Thu, 12 Sep 2019 21:31:24 GMT

Issued at 300 PM MDT Thu Sep 12 2019 000 WTPZ43 KNHC 122044 TCDEP3 Tropical Storm Kiko Discussion Number 2 NWS National Hurricane Center Miami FL EP132019 Issued by the NWS Weather Prediction Center College Park MD 300 PM MDT Thu Sep 12 2019 A recent scatterometer pass depicted a better defined circulation and wind speeds of 30-35 kt northwest of the center of the system. Based on this data and recent satellite imagery continuing to show increased curved banding features, we have decided to upgrade the system to Tropical Storm Kiko with an intensity of 35 kt. The system is moving to the west-northwest around 10 kt. There is good agreement on the track over the next couple of days, with the system continuing a west to west-northwest movement to the south of a mid-level ridge situated over Mexico into the eastern Pacific. There is a small northward shift in most of the guidance and consensus solutions at longer range, and thus the forecast is adjusted in this direction, although it remains south of model consensus. The model trend has been to keep the system moving faster than our previous forecast, and thus the new forecast has been sped up to become more in line with current consensus solutions. Kiko is expected to remain within a favorable environment for intensification over the next several days, with minimal shear and SSTs between 27-29 deg C. The system is thus still on track to become a hurricane this weekend. There remains some chance we see a more rapid intensification of the cyclone during the next few days, with higher rapid intensification probabilities noted in the SHIPS guidance than 6h ago. For now, since it is still unknown how much of an inner core will develop, the forecast will be a bit conservative, but remains above the model consensus intensity. Some weakening is expected by early next week as the system moves over cooler waters. FORECAST POSITIONS AND MAX WINDS INIT 12/2100Z 16.1N 112.2W 35 KT 40 MPH 12H 13/0600Z 16.3N 113.7W 40 KT 45 MPH 24H 13/1800Z 16.6N 115.6W 50 KT 60 MPH 36H 14/0600Z 17.1N 117.4W 60 KT 70 MPH 48H 14/1800Z 17.6N 119.1W 70 KT 80 MPH 72H 15/1800Z 18.5N 122.7W 75 KT 85 MPH 96H 16/1800Z 19.3N 125.7W 60 KT 70 MPH 120H 17/1800Z 20.0N 128.0W 50 KT 60 MPH $$ Forecaster Chenard/Blake

Issued at 2100 UTC THU SEP 12 2019 000 FOPZ13 KNHC 122043 PWSEP3 TROPICAL STORM KIKO WIND SPEED PROBABILITIES NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL EP132019 ISSUED BY THE NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 2100 UTC THU SEP 12 2019 AT 2100Z THE CENTER OF TROPICAL STORM KIKO WAS LOCATED NEAR LATITUDE 16.1 NORTH...LONGITUDE 112.2 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 18Z THU 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 18Z THU 06Z FRI 18Z FRI 06Z SAT 18Z SAT 18Z SUN 18Z MON PERIODS TO TO TO TO TO TO TO 06Z FRI 18Z FRI 06Z SAT 18Z SAT 18Z SUN 18Z MON 18Z TUE FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT ISLA CLARION 34 X 2( 2) 3( 5) 2( 7) 1( 8) X( 8) X( 8) 15N 115W 34 X 3( 3) 3( 6) 2( 8) X( 8) X( 8) X( 8) 20N 115W 34 X 1( 1) 2( 3) 2( 5) X( 5) X( 5) X( 5) 15N 120W 34 X X( X) 3( 3) 7(10) 7(17) 1(18) X(18) 20N 120W 34 X X( X) 2( 2) 12(14) 23(37) 2(39) X(39) 20N 120W 50 X X( X) X( X) 1( 1) 8( 9) X( 9) X( 9) 20N 120W 64 X X( X) X( X) X( X) 3( 3) X( 3) X( 3) 15N 125W 34 X X( X) X( X) X( X) 5( 5) 6(11) 1(12) 20N 125W 34 X X( X) X( X) X( X) 17(17) 34(51) 6(57) 20N 125W 50 X X( X) X( X) X( X) 3( 3) 16(19) 3(22) 20N 125W 64 X X( X) X( X) X( X) X( X) 7( 7) 1( 8) 25N 125W 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) 15N 130W 34 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) 20N 130W 34 X X( X) X( X) X( X) X( X) 4( 4) 11(15) 20N 130W 50 X X( X) X( X) X( X) X( X) X( X) 3( 3) $$ FORECASTER CHENARD/BLAKE

Issued at 300 PM MDT Thu Sep 12 2019 000 WTPZ33 KNHC 122043 TCPEP3 BULLETIN Tropical Storm Kiko Advisory Number 2 National Hurricane Center Miami FL EP132019 Issued by the NWS Weather Prediction Center College Park MD 300 PM MDT Thu Sep 12 2019 ...DEPRESSION BECOMES TROPICAL STORM KIKO... ...EXPECTED TO STRENGTHEN INTO A HURRICANE THIS WEEKEND... SUMMARY OF 300 PM MDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...16.1N 112.2W ABOUT 495 MI...795 KM SSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 300 PM MDT (2100 UTC), the center of Tropical Storm Kiko was located near latitude 16.1 North, longitude 112.2 West. Kiko is moving toward the west-northwest near 12 mph (19 km/h) and is expected to continue to move to the west or west-northwest at a slower speed over the next few days. Satellite data indicate that maximum sustained winds have increased to near 40 mph (65 km/h) with higher gusts. Further strengthening is forecast during the next 48 hours, with the system expected to become a hurricane this weekend. Tropical-storm-force winds extend outward up to 90 miles (150 km) from the center. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 900 PM MDT. $$ Forecaster Chenard/Blake

...DEPRESSION BECOMES TROPICAL STORM KIKO... ...EXPECTED TO STRENGTHEN INTO A HURRICANE THIS WEEKEND... As of 3:00 PM MDT Thu Sep 12 the center of Kiko was located near 16.1, -112.2 with movement WNW at 12 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 40 mph.

Issued at 2100 UTC THU SEP 12 2019 000 WTPZ23 KNHC 122043 TCMEP3 TROPICAL STORM KIKO FORECAST/ADVISORY NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL EP132019 ISSUED BY THE NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 2100 UTC THU SEP 12 2019 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 16.1N 112.2W AT 12/2100Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1004 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 0SE 0SW 80NW. 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 16.1N 112.2W AT 12/2100Z AT 12/1800Z CENTER WAS LOCATED NEAR 15.9N 111.7W FORECAST VALID 13/0600Z 16.3N 113.7W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 40NE 0SE 0SW 60NW. FORECAST VALID 13/1800Z 16.6N 115.6W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 20NE 0SE 0SW 20NW. 34 KT... 60NE 30SE 20SW 60NW. FORECAST VALID 14/0600Z 17.1N 117.4W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 30NE 20SE 10SW 30NW. 34 KT... 60NE 30SE 30SW 60NW. FORECAST VALID 14/1800Z 17.6N 119.1W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 15NE 10SE 0SW 15NW. 50 KT... 30NE 20SE 20SW 30NW. 34 KT... 60NE 40SE 40SW 60NW. FORECAST VALID 15/1800Z 18.5N 122.7W MAX WIND 75 KT...GUSTS 90 KT. 50 KT... 30NE 30SE 20SW 30NW. 34 KT... 70NE 50SE 50SW 70NW. 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 16/1800Z 19.3N 125.7W MAX WIND 60 KT...GUSTS 75 KT. OUTLOOK VALID 17/1800Z 20.0N 128.0W MAX WIND 50 KT...GUSTS 60 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.1N 112.2W NEXT ADVISORY AT 13/0300Z $$ FORECASTER CHENARD/BLAKE

000
ABPZ20 KNHC 121725
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
Issued by the NWS Weather Prediction Center College Park MD
1100 AM PDT Thu Sep 12 2019

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

The National Hurricane Center is issuing advisories on newly formed
Tropical Depression Thirteen-E, located several hundred miles south
of the southern tip of Baja California.

A tropical wave located about 1500 miles west-southwest of the
southern tip of the Baja California peninsula continues to produce
disorganized showers and thunderstorms. As the tropical wave moves
slowly westward at 5 to 10 mph during the next couple of days, slow
development is possible, with upper-level winds becoming less
conducive for development thereafter.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...low...20 percent.

Another tropical wave is located a few hundred miles southwest of
Acapulco, Mexico, producing an area of disorganized showers and
thunderstorms. Some slow development of this system is possible
over the next several days as it moves west-northwest at 5 to 10
mph.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 5 days...low...20 percent.

An area of low pressure is expected to form west of the coast of
Central America over the weekend. Development of this system
is becoming increasingly likely, and a tropical depression could
form early next week while it moves westward well south of the
southern coast of Mexico.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...medium...50 percent.

&&
Public Advisories on Thirteen-E are issued under WMO header
WTPZ33 KNHC and under AWIPS header MIATCPEP3.
Forecast/Advisories on Thirteen-E are issued under WMO header
WTPZ23 KNHC and under AWIPS header MIATCMEP3.

$$
Forecaster Chenard/Blake

5-Day Uncertainty Track last updated Thu, 12 Sep 2019 14:57:49 GMT


Wind Speed Probabilities last updated Thu, 12 Sep 2019 15:24:41 GMT

Issued at 900 AM MDT Thu Sep 12 2019 582 WTPZ43 KNHC 121452 TCDEP3 Tropical Depression Thirteen-E Discussion Number 1 NWS National Hurricane Center Miami FL EP132019 Issued by the NWS Weather Prediction Center College Park MD 900 AM MDT Thu Sep 12 2019 An overnight scatterometer pass depicted an elongated circulation associated with this disturbance. Recent satellite imagery suggest the system has likely become better organized since the scatterometer, as can be seen in better defined curved banding features. Thus all indications are that a tropical depression has developed, with an initial intensity estimate of 30 kt derived from TAFB/SAB fixes. The depression has an initial motion off to the west-northwest around 11 kt. There is good agreement on the track over the next couple of days, with the system continuing a west to west-northwest movement to the south of a mid-level ridge situated over Mexico into the eastern Pacific. A bit more uncertainty develops by early next week with regards to how the system potentially interacts with a weakness in the ridge. While the track is of less confidence by this time, what does appear more certain is that the system should move more slowly. The NHC forecast track generally stays close to the model consensus. Tropical Depression Thirteen is expected to remain within a favorable environment for intensification over the next several days, with minimal shear and SSTs between 27-29 deg C. Model guidance is in good agreement that the system should become a tropical storm within a day, and a hurricane over the weekend. There is some chance we see a more rapid intensification of the cyclone during the next few days, with respectable rapid intensification probabilities noted in the SHIPS guidance. For now, since it is unknown how much of an inner core will develop, the forecast will be a bit more conservative, but above the model consensus intensity. Some weakening is expected by early next week as the system moves over cooler waters. FORECAST POSITIONS AND MAX WINDS INIT 12/1500Z 15.9N 111.1W 30 KT 35 MPH 12H 13/0000Z 16.3N 112.8W 35 KT 40 MPH 24H 13/1200Z 16.5N 114.8W 40 KT 45 MPH 36H 14/0000Z 16.7N 116.7W 50 KT 60 MPH 48H 14/1200Z 17.0N 118.4W 60 KT 70 MPH 72H 15/1200Z 17.9N 122.0W 75 KT 85 MPH 96H 16/1200Z 18.8N 124.8W 65 KT 75 MPH 120H 17/1200Z 19.5N 126.0W 50 KT 60 MPH $$ Forecaster Chenard/Blake

Issued at 1500 UTC THU SEP 12 2019 000 FOPZ13 KNHC 121451 PWSEP3 TROPICAL DEPRESSION THIRTEEN-E WIND SPEED PROBABILITIES NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL EP132019 ISSUED BY THE NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 1500 UTC THU SEP 12 2019 AT 1500Z THE CENTER OF TROPICAL DEPRESSION THIRTEEN-E WAS LOCATED NEAR LATITUDE 15.9 NORTH...LONGITUDE 111.1 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 30 KTS...35 MPH...55 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 THU 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 THU 00Z FRI 12Z FRI 00Z SAT 12Z SAT 12Z SUN 12Z MON PERIODS TO TO TO TO TO TO TO 00Z FRI 12Z FRI 00Z SAT 12Z SAT 12Z SUN 12Z MON 12Z TUE FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT ISLA CLARION 34 1 5( 6) 6(12) 2(14) 2(16) X(16) X(16) 15N 115W 34 1 8( 9) 9(18) 2(20) 1(21) X(21) X(21) 20N 115W 34 X 1( 1) 2( 3) 3( 6) 1( 7) X( 7) X( 7) 15N 120W 34 X X( X) 2( 2) 11(13) 16(29) 3(32) X(32) 15N 120W 50 X X( X) X( X) 1( 1) 5( 6) X( 6) X( 6) 15N 120W 64 X X( X) X( X) X( X) 2( 2) X( 2) X( 2) 20N 120W 34 X X( X) 1( 1) 5( 6) 21(27) 3(30) X(30) 20N 120W 50 X X( X) X( X) X( X) 5( 5) X( 5) X( 5) 20N 120W 64 X X( X) X( X) X( X) 1( 1) 1( 2) X( 2) 15N 125W 34 X X( X) X( X) X( X) 5( 5) 9(14) 2(16) 15N 125W 50 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) 15N 125W 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) 20N 125W 34 X X( X) X( X) X( X) 8( 8) 33(41) 8(49) 20N 125W 50 X X( X) X( X) X( X) 1( 1) 11(12) 5(17) 20N 125W 64 X X( X) X( X) X( X) X( X) 3( 3) 2( 5) 25N 125W 34 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) 20N 130W 34 X X( X) X( X) X( X) X( X) 2( 2) 5( 7) $$ FORECASTER CHENARD/BLAKE

Issued at 900 AM MDT Thu Sep 12 2019 000 WTPZ33 KNHC 121451 TCPEP3 BULLETIN Tropical Depression Thirteen-E Advisory Number 1 NWS National Hurricane Center Miami FL EP132019 Issued by the NWS Weather Prediction Center College Park MD 900 AM MDT Thu Sep 12 2019 ...NEW TROPICAL DEPRESSION FORMS SOUTHWEST OF MEXICO... SUMMARY OF 900 AM MDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...15.9N 111.1W ABOUT 490 MI...790 KM S OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 900 AM MDT (1500 UTC), the center of Tropical Depression Thirteen-E was located near latitude 15.9 North, longitude 111.1 West. The depression is moving toward the west-northwest near 13 mph (20 km/h) and is expected to continue to move to the west or west-northwest at a slower speed over the next few days. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Some strengthening is forecast during the next 48 hours, with the system expected to become a hurricane this weekend. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 300 PM MDT. $$ Forecaster Chenard/Blake

...NEW TROPICAL DEPRESSION FORMS SOUTHWEST OF MEXICO... As of 9:00 AM MDT Thu Sep 12 the center of Thirteen-E was located near 15.9, -111.1 with movement WNW at 13 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 35 mph.