National Hurricane Center (NHC) Pacific Map

Issued at 1500 UTC SAT AUG 09 2025 000 WTPZ24 KNHC 091440 TCMEP4 TROPICAL STORM IVO FORECAST/ADVISORY NUMBER 12 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092025 1500 UTC SAT AUG 09 2025 TROPICAL STORM CENTER LOCATED NEAR 21.0N 112.7W AT 09/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 5 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1001 MB MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT. 50 KT....... 15NE 0SE 0SW 15NW. 34 KT....... 30NE 30SE 20SW 30NW. 4 M SEAS.... 60NE 30SE 0SW 60NW. 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 21.0N 112.7W AT 09/1500Z AT 09/1200Z CENTER WAS LOCATED NEAR 20.9N 112.4W FORECAST VALID 10/0000Z 21.4N 113.8W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 30NE 30SE 20SW 30NW. FORECAST VALID 10/1200Z 21.9N 115.7W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 30NE 20SE 0SW 30NW. FORECAST VALID 11/0000Z 22.4N 117.6W...POST-TROPICAL MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 20NE 0SE 0SW 20NW. FORECAST VALID 11/1200Z 22.6N 119.7W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 12/0000Z 22.7N 121.9W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 12/1200Z 22.6N 124.3W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 13/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.0N 112.7W NEXT ADVISORY AT 09/2100Z $$ FORECASTER BERG

Issued at 1500 UTC SAT AUG 09 2025 000 FOPZ14 KNHC 091439 PWSEP4 TROPICAL STORM IVO WIND SPEED PROBABILITIES NUMBER 12 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092025 1500 UTC SAT AUG 09 2025 AT 1500Z THE CENTER OF TROPICAL STORM IVO WAS LOCATED NEAR LATITUDE 21.0 NORTH...LONGITUDE 112.7 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 50 KTS...60 MPH...95 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 SAT 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 SAT 00Z SUN 12Z SUN 00Z MON 12Z MON 12Z TUE 12Z WED PERIODS TO TO TO TO TO TO TO 00Z SUN 12Z SUN 00Z MON 12Z MON 12Z TUE 12Z WED 12Z THU FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER BERG

Issued at 800 AM MST Sat Aug 09 2025 000 WTPZ34 KNHC 091439 TCPEP4 BULLETIN Tropical Storm Ivo Advisory Number 12 NWS National Hurricane Center Miami FL EP092025 800 AM MST Sat Aug 09 2025 ...IVO FORECAST TO WEAKEN OVER COLDER WATERS... SUMMARY OF 800 AM MST...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...21.0N 112.7W ABOUT 220 MI...360 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 AM MST (1500 UTC), the center of Tropical Storm Ivo was located near latitude 21.0 North, longitude 112.7 West. Ivo is moving toward the west-northwest near 6 mph (9 km/h). A faster motion toward the west-northwest and then west is expected during the next few days. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Weakening is forecast during the next few days, and Ivo is likely to become post-tropical by late Sunday. Tropical-storm-force winds extend outward up to 35 miles (55 km) from the center. The estimated minimum central pressure is 1001 mb (29.56 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Ivo will continue to affect the southern portion of the Baja California peninsula during the next day or so. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 200 PM MST. $$ Forecaster Berg

...IVO FORECAST TO WEAKEN OVER COLDER WATERS... As of 8:00 AM MST Sat Aug 09 the center of Ivo was located near 21.0, -112.7 with movement WNW at 6 mph. The minimum central pressure was 1001 mb with maximum sustained winds of about 60 mph.

306
ABPZ20 KNHC 091116
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
500 AM PDT Sat Aug 9 2025

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

Active Systems:
The National Hurricane Center is issuing advisories on recently
redesignated Tropical Depression Henriette, located in the Central
Pacific basin several hundred miles east of the Hawaiian Islands.
The National Hurricane Center is also issuing advisories on
Tropical Storm Ivo, located over the Eastern Pacific basin a couple
of hundred miles southwest of the southern tip of the Baja
California peninsula.

Tropical cyclone formation is not expected during the next 7 days.

$$
Forecaster Berg

5-Day Uncertainty Track last updated Sat, 09 Aug 2025 08:41:08 GMT


Wind Speed Probabilities last updated Sat, 09 Aug 2025 09:26:40 GMT

5-Day Uncertainty Track last updated Sat, 09 Aug 2025 08:41:08 GMT


Wind Speed Probabilities last updated Sat, 09 Aug 2025 08:41:08 GMT

Issued at 200 AM MST Sat Aug 09 2025 023 WTPZ44 KNHC 090839 TCDEP4 Tropical Storm Ivo Discussion Number 11 NWS National Hurricane Center Miami FL EP092025 200 AM MST Sat Aug 09 2025 Ivo is having intermittent bursts of deep convection since the last advisory. An ASCAT pass from 0412 UTC showed the center of the small circulation near the northeastern edge of the CDO. Subjective and objective satellite intensity estimates have generally decreased in recent hours and the initial intensity is lowered to 50 kt for this cycle. The storm is moving westward at 8 kt. A general westward to west-northwestward motion is anticipated through the forecast period while Ivo is steered along the southern side of a ridge positioned to its north. The track guidance has shifted poleward this cycle, and the latest official forecast lies on the southern side of the envelope between the ECMWF to its south and the simple consensus aid TVCE to its north. Ivo is currently crossing a cooling gradient of sea surface temperatures and moving towards a dry and stable airmass. The storm is expected to gradually weaken through the weekend, until it becomes a post-tropical cyclone sometime Sunday night or Monday morning. The NHC intensity forecast has been adjusted lower based on the decrease in initial intensity and is in the middle of the guidance envelope. FORECAST POSITIONS AND MAX WINDS INIT 09/0900Z 20.6N 112.4W 50 KT 60 MPH 12H 09/1800Z 20.9N 113.4W 45 KT 50 MPH 24H 10/0600Z 21.3N 115.1W 45 KT 50 MPH 36H 10/1800Z 21.7N 117.1W 40 KT 45 MPH 48H 11/0600Z 22.0N 119.3W 35 KT 40 MPH...POST-TROPICAL 60H 11/1800Z 22.1N 121.5W 30 KT 35 MPH...POST-TROP/REMNT LOW 72H 12/0600Z 22.2N 123.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 96H 13/0600Z...DISSIPATED $$ Forecaster Bucci

Issued at 0900 UTC SAT AUG 09 2025 522 FOPZ14 KNHC 090839 PWSEP4 TROPICAL STORM IVO WIND SPEED PROBABILITIES NUMBER 11 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092025 0900 UTC SAT AUG 09 2025 AT 0900Z THE CENTER OF TROPICAL STORM IVO WAS LOCATED NEAR LATITUDE 20.6 NORTH...LONGITUDE 112.4 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 50 KTS...60 MPH...95 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 SAT 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 SAT 18Z SAT 06Z SUN 18Z SUN 06Z MON 06Z TUE 06Z WED PERIODS TO TO TO TO TO TO TO 18Z SAT 06Z SUN 18Z SUN 06Z MON 06Z TUE 06Z WED 06Z THU FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 20N 115W 34 X 5( 5) 1( 6) X( 6) X( 6) X( 6) X( 6) $$ FORECASTER BUCCI

Issued at 200 AM MST Sat Aug 09 2025 219 WTPZ34 KNHC 090839 TCPEP4 BULLETIN Tropical Storm Ivo Advisory Number 11 NWS National Hurricane Center Miami FL EP092025 200 AM MST Sat Aug 09 2025 ...IVO HEADING WESTWARD... SUMMARY OF 200 AM MST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...20.6N 112.4W ABOUT 225 MI...365 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 200 AM MST (0900 UTC), the center of Tropical Storm Ivo was located near latitude 20.6 North, longitude 112.4 West. Ivo is moving toward the west near 9 mph (15 km/h). A westward to west-northwestward motion is expected during the next few days. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Gradual weakening is forecast for the next few days and Ivo is expected to become post-tropical by Sunday night. Tropical-storm-force winds extend outward up to 35 miles (55 km) from the center. The estimated minimum central pressure is 1001 mb (29.56 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Ivo will continue to affect the southern portion of the Baja California peninsula during the next day or so. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 800 AM MST. $$ Forecaster Bucci

...IVO HEADING WESTWARD... As of 2:00 AM MST Sat Aug 09 the center of Ivo was located near 20.6, -112.4 with movement W at 9 mph. The minimum central pressure was 1001 mb with maximum sustained winds of about 60 mph.

Issued at 0900 UTC SAT AUG 09 2025 213 WTPZ24 KNHC 090838 TCMEP4 TROPICAL STORM IVO FORECAST/ADVISORY NUMBER 11 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092025 0900 UTC SAT AUG 09 2025 TROPICAL STORM CENTER LOCATED NEAR 20.6N 112.4W AT 09/0900Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 8 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1001 MB MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT. 50 KT....... 15NE 0SE 0SW 15NW. 34 KT....... 30NE 30SE 20SW 30NW. 4 M SEAS.... 60NE 30SE 30SW 60NW. 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 20.6N 112.4W AT 09/0900Z AT 09/0600Z CENTER WAS LOCATED NEAR 20.5N 112.1W FORECAST VALID 09/1800Z 20.9N 113.4W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 30NE 30SE 20SW 30NW. FORECAST VALID 10/0600Z 21.3N 115.1W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 30NE 20SE 20SW 30NW. FORECAST VALID 10/1800Z 21.7N 117.1W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 30NE 20SE 10SW 30NW. FORECAST VALID 11/0600Z 22.0N 119.3W...POST-TROPICAL MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 20NE 0SE 0SW 20NW. FORECAST VALID 11/1800Z 22.1N 121.5W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 12/0600Z 22.2N 123.7W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 13/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.6N 112.4W NEXT ADVISORY AT 09/1500Z $$ FORECASTER BUCCI

580
ABPZ20 KNHC 090515
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 PM PDT Fri Aug 8 2025

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

Active Systems:
The National Hurricane Center is issuing advisories on Post-Tropical
Cyclone Henriette, located in the Central Pacific basin well east of
the Hawaiian Islands. The National Hurricane Center is also issuing
advisories on Tropical Storm Ivo, located over the Eastern Pacific
basin about 200 miles southwest of the southern tip of the Baja
California peninsula.

Tropical cyclone formation is not expected during the next 7 days.

$$
Forecaster Gibbs

000
ABPZ20 KNHC 090515
TWOEP

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 PM PDT Fri Aug 8 2025

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

Active Systems:
The National Hurricane Center is issuing advisories on Post-Tropical
Cyclone Henriette, located in the Central Pacific basin well east of
the Hawaiian Islands. The National Hurricane Center is also issuing
advisories on Tropical Storm Ivo, located over the Eastern Pacific
basin about 200 miles southwest of the southern tip of the Baja
California peninsula.

Tropical cyclone formation is not expected during the next 7 days.

$$
Forecaster Gibbs

5-Day Uncertainty Track last updated Sat, 09 Aug 2025 02:35:13 GMT


Wind Speed Probabilities last updated Sat, 09 Aug 2025 03:26:59 GMT

Issued at 0300 UTC SAT AUG 09 2025 844 WTPZ24 KNHC 090320 TCMEP4 TROPICAL STORM IVO FORECAST/ADVISORY NUMBER 10 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092025 0300 UTC SAT AUG 09 2025 TROPICAL STORM CENTER LOCATED NEAR 20.5N 112.1W AT 09/0300Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST OR 275 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 999 MB MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT. 50 KT....... 15NE 0SE 0SW 15NW. 34 KT....... 30NE 30SE 20SW 30NW. 4 M SEAS.... 75NE 30SE 0SW 60NW. 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 20.5N 112.1W AT 09/0300Z AT 09/0000Z CENTER WAS LOCATED NEAR 20.4N 111.8W FORECAST VALID 09/1200Z 20.7N 113.2W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 15NE 0SE 0SW 15NW. 34 KT... 30NE 30SE 20SW 30NW. FORECAST VALID 10/0000Z 21.0N 114.7W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 15NE 0SE 0SW 0NW. 34 KT... 30NE 30SE 20SW 30NW. FORECAST VALID 10/1200Z 21.5N 116.5W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 30NE 30SE 20SW 30NW. FORECAST VALID 11/0000Z 21.9N 118.6W...POST-TROPICAL MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 30NE 20SE 0SW 30NW. FORECAST VALID 11/1200Z 22.1N 120.7W...POST-TROPICAL MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 30NE 0SE 0SW 0NW. FORECAST VALID 12/0000Z 22.1N 123.0W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 13/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.5N 112.1W NEXT ADVISORY AT 09/0900Z $$ FORECASTER CANGIALOSI

5-Day Uncertainty Track last updated Sat, 09 Aug 2025 02:35:13 GMT


Wind Speed Probabilities last updated Sat, 09 Aug 2025 02:35:13 GMT

Issued at 800 PM MST Fri Aug 08 2025 861 WTPZ44 KNHC 090233 TCDEP4 Tropical Storm Ivo Discussion Number 10 NWS National Hurricane Center Miami FL EP092025 800 PM MST Fri Aug 08 2025 After gaining some strength earlier today, Ivo's intensity appears to have leveled off again. The compact storm is still producing a concentrated area of deep convection, but the cloud tops have been warming over the past several hours. In addition, dry air appears to be eroding some of the outer bands. The initial intensity is held at 55 kt, which is in line with the latest satellite intensity estimates. Ivo could strengthen a little later tonight or early Saturday, but a weakening trend should begin shortly thereafter as the storm moves over progressively cooler waters and into a drier air mass. The NHC intensity forecast is a little lower than the previous one, and now shows Ivo becoming a post-tropical cyclone in a couple of days when it is anticipated to be over cool 23 to 24 C waters. The storm is moving westward at about 10 kt. The track forecast appears straightforward as Ivo should being steered westward to west-northwestward on the south side of a low- to mid-level ridge during the next few days. This motion should take the system away from the Baja California peninsula and over the open eastern Pacific. The NHC track forecast follows the various consensus models, and is a touch to the north of the previous track. FORECAST POSITIONS AND MAX WINDS INIT 09/0300Z 20.5N 112.1W 55 KT 65 MPH 12H 09/1200Z 20.7N 113.2W 55 KT 65 MPH 24H 10/0000Z 21.0N 114.7W 50 KT 60 MPH 36H 10/1200Z 21.5N 116.5W 45 KT 50 MPH 48H 11/0000Z 21.9N 118.6W 40 KT 45 MPH...POST-TROPICAL 60H 11/1200Z 22.1N 120.7W 35 KT 40 MPH...POST-TROPICAL 72H 12/0000Z 22.1N 123.0W 30 KT 35 MPH...POST-TROP/REMNT LOW 96H 13/0000Z...DISSIPATED $$ Forecaster Cangialosi

Issued at 0300 UTC SAT AUG 09 2025 172 FOPZ14 KNHC 090232 PWSEP4 TROPICAL STORM IVO WIND SPEED PROBABILITIES NUMBER 10 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092025 0300 UTC SAT AUG 09 2025 AT 0300Z THE CENTER OF TROPICAL STORM IVO WAS LOCATED NEAR LATITUDE 20.5 NORTH...LONGITUDE 112.1 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 55 KTS...65 MPH...100 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 00Z SAT 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 SAT 12Z SAT 00Z SUN 12Z SUN 00Z MON 00Z TUE 00Z WED PERIODS TO TO TO TO TO TO TO 12Z SAT 00Z SUN 12Z SUN 00Z MON 00Z TUE 00Z WED 00Z THU FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 20N 115W 34 X 15(15) 4(19) X(19) X(19) X(19) X(19) 20N 120W 34 X X( X) 1( 1) 1( 2) 1( 3) X( 3) X( 3) $$ FORECASTER CANGIALOSI

Issued at 800 PM MST Fri Aug 08 2025 118 WTPZ34 KNHC 090232 TCPEP4 BULLETIN Tropical Storm Ivo Advisory Number 10 NWS National Hurricane Center Miami FL EP092025 800 PM MST Fri Aug 08 2025 ...IVO MOVING WESTWARD WELL OFFSHORE OF BAJA CALIFORNIA... SUMMARY OF 800 PM MST...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...20.5N 112.1W ABOUT 220 MI...350 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 PM MST (0300 UTC), the center of Tropical Storm Ivo was located near latitude 20.5 North, longitude 112.1 West. Ivo is moving toward the west near 12 mph (19 km/h). A westward to west-northwestward motion is expected during the next few days. Maximum sustained winds remain near 65 mph (100 km/h) with higher gusts. Little change in strength is expected through early Saturday, followed by a gradual weakening trend. Ivo is forecast to become post-tropical by Sunday night. Tropical-storm-force winds extend outward up to 35 miles (55 km) from the center. The estimated minimum central pressure is 999 mb (29.50 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Ivo will continue to affect the southern portion of the Baja California peninsula during the next day or so. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 200 AM MST. $$ Forecaster Cangialosi