03/08/2026
TROPICAL CYCLONE BULLETIN NR. 10
Tropical Depression
Issued at 2:00 PM, 03 August 2026
Valid for broadcast until the next bulletin at 5:00 PM today.
LUIS MAINTAINS ITS STRENGTH AS IT MOVES NORTH NORTHWESTWARD OVER THE SEA EAST OF ISABELA.
➣ Location of Center (1:00 PM)
The center of Tropical Depression LUIS was estimated based on all available data at over the coastal waters of Palanan, Isabela (17.3°N, 122.9°E).
➣ Intensity
Maximum sustained winds of 45 km/h near the center, gustiness of up to 60 km/h, and central pressure of 1002 hPa.
➣ Present Movement
North Northwestward at 15 km/h
➣ Extent of Tropical Cyclone Winds
Strong winds extend outwards up to 190 km from the center
TROPICAL CYCLONE WIND SIGNALS (TCWS) IN EFFECT
TCWS No.1
• Wind threat: Strong winds
• Warning lead time: 36 hours
• Range of wind speeds: 39 to 61 km/h (Beaufort 6 to 7)
• Potential impacts of winds: Minimal to minor threat to life and property
LUZON:
The central and eastern portions of Cagayan (Enrile, Tuguegarao City, Peñablanca, Piat, Santo Niño, Camalaniugan, Tuao, Lal-Lo, Gonzaga, Alcala, Amulung, Santa Teresita, Baggao, Buguey, Solana, Rizal, Santa Ana, Gattaran, Iguig, Lasam, Aparri, Ballesteros, Abulug, Allacapan, Pamplona), Isabela, Quirino, the eastern and southern portions of Apayao (Flora, Santa Marcela, Conner, Pudtol, Luna), the eastern portion of Kalinga (City of Tabuk, Tanudan, Pinukpuk, Rizal), the eastern portion of Mountain Province (Paracelis, Natonin), the eastern portion of Ifugao (Aguinaldo, Alfonso Lista), and the northern portion of Aurora (Dinalungan, Casiguran, Dilasag, Dipaculao, Baler)
OTHER HAZARDS AFFECTING LAND AREAS
➣ Heavy Rainfall Outlook
Refer to Weather Advisory No. 7 issued at 11:00 AM today for the heavy rainfall outlook due to TC LUIS and the Southwest Monsoon. Link: tinyurl.com/wxadvisory
➣ Severe Winds
The wind signals warn the public of the general wind threat over an area due to the tropical cyclone. Local winds may be slightly stronger/enhanced in coastal and upland/mountainous areas exposed to winds. Winds are less strong in areas sheltered from the prevailing wind direction.
• Minimal to minor impacts from strong winds are possible within any of the areas under Wind Signal No. 1.
The Southwest Monsoon and the periphery of LUIS will bring strong to gale-force gusts over the following areas (especially in coastal and upland areas exposed to winds):
• Today and Tomorrow (04 August): Most of Luzon and Visayas, Zamboanga del Norte, Lanao del Norte, Misamis Occidental, Camiguin, Surigao del Norte, Dinagat Islands, Sarangani, Davao Occidental, and Davao Oriental.
• Wednesday (05 August): Most of the country.
HAZARDS AFFECTING COASTAL WATERS
➣ 24-Hour Sea Condition Outlook
Up to moderate seas over the following coastal waters:
• Up to 2.5 m: The seaboard of Isabela; the northern and eastern seaboards of Polillo Islands; the northern seaboard of Camarines Norte; the eastern seaboard of Davao Oriental; the northeastern seaboard of Aurora.
• Up to 2.0 m: The seaboards of Batanes, Cagayan including Babuyan Islands, Ilocos Norte, Ilocos Sur, La Union, Pangasinan, Zambales, Lubang Islands, and Surigao del Sur; the western seaboards of Bataan, Cavite, and Batangas; the northern seaboard of Camarines Sur; the northern and eastern seaboards of Catanduanes and Northern Samar; the eastern seaboards of Albay, Sorsogon, Eastern Samar, Dinagat Islands, Siargao-Bucas Grande Islands, and Davao Occidental; the southern seaboard of Davao Oriental.
• Mariners of motorbancas and similarly sized vessels are advised to take precautionary measures while venturing out to sea and, if possible, avoid navigation under these conditions.
Other coastal waters have forecast wave heights of less than 2.0 m.
TRACK AND INTENSITY OUTLOOK
• It must be emphasized that heavy rainfall and severe winds may still be experienced in localities outside the landfall point and the forecast confidence cone. Refer to “Other Hazards affecting Land Areas” for more details. Furthermore, the track may still shift within the limit of the forecast confidence cone.
• LUIS will move generally northwestward and may make landfall or pass close to Northern Luzon tonight or tomorrow (04 August) early morning. Afterwards, it will sharply turn east northeastward while moving away from the Philippine landmass. The forecast track is highly uncertain and may change in the succeeding bulletins.
• LUIS is forecast to remain as a tropical depression over majority of the forecast period and may be downgraded into a remnant low by Wednesday (05 August) before becoming fully assimilated into the circulation of Tropical Cyclone DOLPHIN.
Considering these developments, the public and disaster risk reduction and management offices concerned are advised to take all necessary measures to protect life and property. Persons living in areas identified to be highly or very highly susceptible to these hazards are advised to follow evacuation and other instructions from local officials. For heavy rainfall warnings, thunderstorm/rainfall advisories, and other severe weather information specific to your area, please monitor products issued by your local PAGASA Regional Services Division.
The next tropical cyclone bulletin will be issued at 5:00 PM today.
