National Hurricane Center (NHC) Pacific Map

5-Day Uncertainty Track last updated Mon, 12 Aug 2019 20:53:20 GMT


Wind Speed Probabilities last updated Mon, 12 Aug 2019 21:24:23 GMT

Issued at 300 PM MDT Mon Aug 12 2019 000 WTPZ44 KNHC 122052 TCDEP4 Tropical Storm Henriette Discussion Number 4 NWS National Hurricane Center Miami FL EP092019 300 PM MDT Mon Aug 12 2019 Dry air and northeasterly shear have been steadily eroding the deep convection around the center of Henriette today. The low-level center is exposed and the only deep convection remaining is confined to the western semicircle. Despite the degradation in the satellite presentation, a recent ASCAT pass showed that tropical- storm- force winds are still occuring in a small area near the center of the compact storm. Based on this data, the initial intensity remains 35 kt. The initial motion is 290/11 kt. This motion will continue through tonight while the cyclone is steered by a mid-level ridge to its north. A turn to the west is expected on Tuesday as the system weakens and becomes steered by the low-level flow. The official forecast is very near the previous one, and is close to the corrected consensus HCCA which lies on the southern side of the other consensus aids. Dry, stable air and ongoing shear should limit convection over the cyclone while the circulation remains over marginally favorable SSTs. This lack of convection should cause a weakening trend to commence very soon. By Tuesday, Henriette will move over SSTs below 26 C, which, combined with the other unfavorable environmental conditions, should cause the cyclone to degenerate into a remnant low by late Tuesday. The official forecast calls for a little faster weakening of Henriette than the previous one, and is near the various multi-model consensus solutions. FORECAST POSITIONS AND MAX WINDS INIT 12/2100Z 20.3N 113.1W 35 KT 40 MPH 12H 13/0600Z 20.9N 114.8W 30 KT 35 MPH 24H 13/1800Z 21.6N 117.1W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 14/0600Z 22.1N 119.7W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 14/1800Z...DISSIPATED $$ Forecaster Latto/Pasch

Issued at 2100 UTC MON AUG 12 2019 000 FOPZ14 KNHC 122051 PWSEP4 TROPICAL STORM HENRIETTE WIND SPEED PROBABILITIES NUMBER 4 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092019 2100 UTC MON AUG 12 2019 AT 2100Z THE CENTER OF TROPICAL STORM HENRIETTE WAS LOCATED NEAR LATITUDE 20.3 NORTH...LONGITUDE 113.1 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 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 18Z MON 06Z TUE 18Z TUE 06Z WED 18Z WED 18Z THU 18Z FRI PERIODS TO TO TO TO TO TO TO 06Z TUE 18Z TUE 06Z WED 18Z WED 18Z THU 18Z FRI 18Z SAT FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 20N 115W 34 2 1( 3) X( 3) X( 3) X( 3) X( 3) X( 3) $$ FORECASTER LATTO/PASCH

Issued at 300 PM MDT Mon Aug 12 2019 000 WTPZ34 KNHC 122051 TCPEP4 BULLETIN Tropical Storm Henriette Advisory Number 4 NWS National Hurricane Center Miami FL EP092019 300 PM MDT Mon Aug 12 2019 ...HENRIETTE HANGING ON AS A TROPICAL STORM BUT SHOULD BEGIN WEAKENING SOON... SUMMARY OF 300 PM MDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...20.3N 113.1W ABOUT 275 MI...440 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 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 Henriette was located near latitude 20.3 North, longitude 113.1 West. Henriette is moving toward the west-northwest near 13 mph (20 km/h) and this motion is expected continue through tonight, with a turn to the west on Tuesday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Henriette is expected to begin weakening by tonight and degenerate into a remnant low on Tuesday. Tropical-storm-force winds extend outward up to 25 miles (35 km) from the center. The estimated minimum central pressure is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 900 PM MDT. $$ Forecaster Latto/Pasch

...HENRIETTE HANGING ON AS A TROPICAL STORM BUT SHOULD BEGIN WEAKENING SOON... As of 3:00 PM MDT Mon Aug 12 the center of Henriette was located near 20.3, -113.1 with movement WNW at 13 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 40 mph.

Issued at 2100 UTC MON AUG 12 2019 000 WTPZ24 KNHC 122051 TCMEP4 TROPICAL STORM HENRIETTE FORECAST/ADVISORY NUMBER 4 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092019 2100 UTC MON AUG 12 2019 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 20.3N 113.1W AT 12/2100Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 11 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 20NE 20SE 20SW 20NW. 12 FT SEAS.. 30NE 30SE 0SW 0NW. 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 20.3N 113.1W AT 12/2100Z AT 12/1800Z CENTER WAS LOCATED NEAR 20.1N 112.6W FORECAST VALID 13/0600Z 20.9N 114.8W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 13/1800Z 21.6N 117.1W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 14/0600Z 22.1N 119.7W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 14/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.3N 113.1W NEXT ADVISORY AT 13/0300Z $$ FORECASTER LATTO/PASCH

000
ABPZ20 KNHC 121744
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 AM PDT Mon Aug 12 2019

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

The National Hurricane Center is issuing advisories on Tropical
Storm Henriette, located a few hundred miles southwest of the
southern tip of the Baja California peninsula.

Disorganized showers and thunderstorms located just over 1000 miles
southwest of the southern tip of the Baja California peninsula are
associated with a trough of low pressure. Environmental conditions
are forecast to be conducive for some development during the next
few days, and a tropical depression could form later this week while
the system moves west-northwestward at around 15 mph.
* Formation chance through 48 hours...low...30 percent.
* Formation chance through 5 days...medium...60 percent.

&&
Public Advisories on Tropical Storm Henriette are issued under
WMO header WTPZ34 KNHC and under AWIPS header MIATCPEP4.
Forecast/Advisories on Tropical Storm Henriette are issued
under WMO header WTPZ24 KNHC and under AWIPS header MIATCMEP4.

$$
Forecaster Latto/Pasch

5-Day Uncertainty Track last updated Mon, 12 Aug 2019 14:37:25 GMT


Wind Speed Probabilities last updated Mon, 12 Aug 2019 15:24:18 GMT

Issued at 900 AM MDT Mon Aug 12 2019 000 WTPZ44 KNHC 121433 TCDEP4 Tropical Storm Henriette Discussion Number 3 NWS National Hurricane Center Miami FL EP092019 900 AM MDT Mon Aug 12 2019 Henriette is a sheared tropical cyclone, with microwave and first-light visible satellite imagery revealing a low level center that is near the northeastern edge of the deep convection. The overall presentation of the cyclone has changed little over the past several hours, and therefore the initial intensity is being held at 35 kt. This is in agreement with an earlier ASCAT pass showing a very small area of 30-35 kt winds over the northwestern portion of the circulation. The initial motion is 295/10 kt. Henriette is expected to continue this general motion for the next 24 hours as it is steered by a mid-level ridge that extends from northern Mexico to the north of the cyclone. A turn to the west is expected on Tuesday as the system weakens and becomes steered by the low-level flow. The official forecast is slightly south of the previous one through 24 hours, due to a more southward initial position. Beyond 24 hours, the official forecast is very near the previous one, and near the middle of the consensus aids. Northeasterly shear and dry air over the northern portion of the cyclone should continue to keep the low level center near the edge of the deep convection into tonight, preventing any further strengthening. By 24 hours, the cyclone is forecast to cross the 26 C SST isotherm and move into a more stable airmass. This should cause the cyclone to lose its convection and weaken on Tuesday, with the system likely becoming a remnant low by Tuesday night. The official intensity forecast is close to the previous one, and is in agreement with the various dynamical and consensus aids. FORECAST POSITIONS AND MAX WINDS INIT 12/1500Z 19.7N 112.2W 35 KT 40 MPH 12H 13/0000Z 20.2N 113.9W 35 KT 40 MPH 24H 13/1200Z 20.9N 116.1W 30 KT 35 MPH 36H 14/0000Z 21.4N 118.8W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 14/1200Z...DISSIPATED $$ Forecaster Latto/Pasch

Issued at 1500 UTC MON AUG 12 2019 000 FOPZ14 KNHC 121432 PWSEP4 TROPICAL STORM HENRIETTE WIND SPEED PROBABILITIES NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092019 1500 UTC MON AUG 12 2019 AT 1500Z THE CENTER OF TROPICAL STORM HENRIETTE WAS LOCATED NEAR LATITUDE 19.7 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 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 20N 115W 34 2 16(18) 1(19) X(19) X(19) X(19) X(19) 20N 115W 50 X 3( 3) X( 3) X( 3) X( 3) X( 3) X( 3) $$ FORECASTER LATTO/PASCH

Issued at 900 AM MDT Mon Aug 12 2019 933 WTPZ34 KNHC 121432 TCPEP4 BULLETIN Tropical Storm Henriette Advisory Number 3 NWS National Hurricane Center Miami FL EP092019 900 AM MDT Mon Aug 12 2019 ...HENRIETTE MAINTAINS INTENSITY BUT IS EXPECTED TO WEAKEN BY TUESDAY... SUMMARY OF 900 AM MDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...19.7N 112.2W ABOUT 265 MI...430 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 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 Storm Henriette was located near latitude 19.7 North, longitude 112.2 West. Henriette is moving toward the west-northwest near 12 mph (19 km/h) and this general motion is expected to continue for the next couple of days. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Henriette is expected to begin weakening by Tuesday and degenerate into a remnant low by Tuesday night. Tropical-storm-force winds extend outward up to 35 miles (55 km) from the center. The estimated minimum central pressure is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 300 PM MDT. $$ Forecaster Latto/Pasch

...HENRIETTE MAINTAINS INTENSITY BUT IS EXPECTED TO WEAKEN BY TUESDAY... As of 9:00 AM MDT Mon Aug 12 the center of Henriette was located near 19.7, -112.2 with movement WNW at 12 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 40 mph.

Issued at 1500 UTC MON AUG 12 2019 000 WTPZ24 KNHC 121431 TCMEP4 TROPICAL STORM HENRIETTE FORECAST/ADVISORY NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092019 1500 UTC MON AUG 12 2019 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 19.7N 112.2W AT 12/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 295 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 0SE 30SW 30NW. 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 19.7N 112.2W AT 12/1500Z AT 12/1200Z CENTER WAS LOCATED NEAR 19.5N 111.7W FORECAST VALID 13/0000Z 20.2N 113.9W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 0NE 0SE 30SW 30NW. FORECAST VALID 13/1200Z 20.9N 116.1W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 14/0000Z 21.4N 118.8W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 14/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.7N 112.2W NEXT ADVISORY AT 12/2100Z $$ FORECASTER LATTO/PASCH

000
ABPZ20 KNHC 121110
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Mon Aug 12 2019

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

The National Hurricane Center is issuing advisories on recently
upgraded Tropical Storm Henriette, located a few hundred miles
south-southwest of the southern tip of the Baja California
peninsula.

An elongated area of showers and thunderstorms located just over
1000 miles southwest of the southern tip of the Baja California
peninsula is associated with a trough of low pressure. Environmental
conditions are forecast to become more conducive for development
during the next few days, and a tropical depression could form later
this week while the system moves west- northwestward at around 15
mph.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...medium...60 percent.

&&
Public Advisories on Tropical Storm Henriette are issued under
WMO header WTPZ34 KNHC and under AWIPS header MIATCPEP4.
Forecast/Advisories on Tropical Storm Henriette are issued
under WMO header WTPZ24 KNHC and under AWIPS header MIATCMEP4.

$$
Forecaster Latto/Pasch

5-Day Uncertainty Track last updated Mon, 12 Aug 2019 08:37:24 GMT


Wind Speed Probabilities last updated Mon, 12 Aug 2019 09:24:26 GMT

Issued at 0900 UTC MON AUG 12 2019 000 FOPZ14 KNHC 120836 PWSEP4 TROPICAL STORM HENRIETTE WIND SPEED PROBABILITIES NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092019 0900 UTC MON AUG 12 2019 AT 0900Z THE CENTER OF TROPICAL STORM HENRIETTE WAS LOCATED NEAR LATITUDE 19.5 NORTH...LONGITUDE 110.9 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 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 20N 115W 34 X 4( 4) 3( 7) X( 7) X( 7) X( 7) X( 7) 20N 120W 34 X X( X) X( X) 2( 2) 1( 3) X( 3) X( 3) $$ FORECASTER BROWN

Issued at 300 AM MDT Mon Aug 12 2019 000 WTPZ44 KNHC 120836 TCDEP4 Tropical Storm Henriette Discussion Number 2 NWS National Hurricane Center Miami FL EP092019 300 AM MDT Mon Aug 12 2019 Deep convection has continued to burst over the western portion of the cyclone overnight. Although the system is sheared with the center located near the northeastern edge of the convective mass, a couple of ASCAT passes have shown a very small area of 30-35 kt winds over the northwestern portion of the circulation. These winds extend no more than about 15-20 n mi from the center, but based on these data the initial wind speed has been increased to 35 kt. Henriette becomes the eighth named storm in the eastern Pacific basin this season. The ASCAT data also assisted in locating the center this morning, and recent fixes show that Henriette continues to move west- northwestward or 295/12 kt. The tropical storm should move west-northwestward around the southwestern portion of a deep-layer ridge that extends westward from northern Mexico. As Henriette weakens, it is likely to turn westward within the low-level flow. The updated NHC track forecast is similar to the previous advisory through 36 hours, but has been adjusted southward at 48 hours to be closer to the various consensus aids. Henriette is not anticipated to strengthen much more. Although the system is predicted to remain over warm waters and within an area of light to moderate northeasterly shear today, nearby dry mid-level air is likely to prevent significant strengthening. By Tuesday morning, Henriette will be moving over cooler waters and into a more stable airmass. This should lead to weakening, and the cyclone is predicted to degenerate into a remnant low within 48 hours, with dissipation occurring shortly thereafter. FORECAST POSITIONS AND MAX WINDS INIT 12/0900Z 19.5N 110.9W 35 KT 40 MPH 12H 12/1800Z 20.2N 112.4W 35 KT 40 MPH 24H 13/0600Z 21.0N 114.4W 35 KT 40 MPH 36H 13/1800Z 21.7N 116.8W 30 KT 35 MPH 48H 14/0600Z 22.0N 120.0W 25 KT 30 MPH...POST-TROP/REMNT LOW 72H 15/0600Z...DISSIPATED $$ Forecaster Brown

Issued at 300 AM MDT Mon Aug 12 2019 000 WTPZ34 KNHC 120835 TCPEP4 BULLETIN Tropical Storm Henriette Advisory Number 2 NWS National Hurricane Center Miami FL EP092019 300 AM MDT Mon Aug 12 2019 ...HENRIETTE FORMS BUT EXPECTED TO WEAKEN BY TUESDAY... SUMMARY OF 300 AM MDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...19.5N 110.9W ABOUT 245 MI...390 KM SSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 300 AM MDT (0900 UTC), the center of Tropical Storm Henriette was located near latitude 19.5 North, longitude 110.9 West. Henriette is moving toward the west-northwest near 14 mph (22 km/h). A west-northwestward motion with some decrease in forward speed is expected during the next day or two. Satellite wind data indicate that the maximum sustained winds have increased to near 40 mph (65 km/h) with higher gusts. Little change in strength is forecast through tonight. Weakening is expected to begin by Tuesday, and Henriette is predicted to become a remnant low by Tuesday night. Henriette is a small tropical cyclone. Tropical-storm-force winds extend outward up to 25 miles (35 km) from the center. The estimated minimum central pressure is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 900 AM MDT. $$ Forecaster Brown

...HENRIETTE FORMS BUT EXPECTED TO WEAKEN BY TUESDAY... As of 3:00 AM MDT Mon Aug 12 the center of Henriette was located near 19.5, -110.9 with movement WNW at 14 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 40 mph.

Issued at 0900 UTC MON AUG 12 2019 000 WTPZ24 KNHC 120835 TCMEP4 TROPICAL STORM HENRIETTE FORECAST/ADVISORY NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092019 0900 UTC MON AUG 12 2019 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 19.5N 110.9W AT 12/0900Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 295 DEGREES AT 12 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 0SE 0SW 20NW. 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 19.5N 110.9W AT 12/0900Z AT 12/0600Z CENTER WAS LOCATED NEAR 19.3N 110.4W FORECAST VALID 12/1800Z 20.2N 112.4W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 0NE 0SE 20SW 30NW. FORECAST VALID 13/0600Z 21.0N 114.4W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 0NE 0SE 20SW 30NW. FORECAST VALID 13/1800Z 21.7N 116.8W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 14/0600Z 22.0N 120.0W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 15/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.5N 110.9W NEXT ADVISORY AT 12/1500Z $$ FORECASTER BROWN