Department of Science and Technology
Philippine Atmospheric, Geophysical and
Astronomical Services Administration
Farm Weather Forecast
Synopsis

SOUTHWEST MONSOON AFFECTING CENTRAL AND SOUTHERN LUZON AND WESTERN VISAYAS

Issued at: 8AM Monday, September 16, 2019
Valid until: 8AM Tuesday, September 17, 2019
FWFA: 19-258
Forecast Area Agri-Weather Winds Temperature Relative Humidity Leaf Wetness
METRO MANILA, CENTRAL LUZON, CALABARZON, MIMAROPA AND WESTERN VISAYAS CLOUDY WITH SCATTERED RAINSHOWERS AND THUNDERSTORMS MODERATE TO STRONG FROM SOUTHWEST – METRO MANILA, CALABARZON, MIMAROPA AND WESTERN VISAYAS;
MODERATE FROM NORTHWEST TO WEST - CENTRAL LUZON		 LOWLAND 24 - 31

UPLAND 21 - 27		 70 - 100 > 12 HRS
THE REST OF THE COUNTRY PARTLY CLOUDY TO CLOUDY WITH ISOLATED RAINSHOWERS AND THUNDERSTORMS MODERATE TO STRONG FROM SOUTHWEST – BICOL REGION AND REST OF VISAYAS;
MODERATE FROM NORTHWEST TO WEST – REST OF LUZON;
MODERATE TO STRONG FROM SOUTH TO SOUTHWEST – MINDANAO		 22 - 33

18 - 29		 65 - 96 6-12 HRS

Soil Moisture Condition
Wet

– ILOCOS REGION, CAGAYAN VALLEY, CAR, NCR, CAVITE, LAGUNA, BATANGAS, RIZAL, MINDORO, MARINDUQUE, REGION 6, DAVAO CITY, AGUSAN DEL NORTE

Moist

ISABELA, ROMBLON, CAMARINES NORTE, LEYTE, ZAMBOANGA DEL NORTE, BUKIDNON, REST OF DAVAO REGION, SURIGAO DEL SUR, ARMM

Dry

REST OF THE COUNTRY

Farming Advisories
BE ALERT AND HAVE EXTRA CARE TO THOSE LIVING IN LOW LYING AREAS DUE TO POSSIBLE FLASH FLOODING AND LIVING NEAR MOUNTAINOUS OR SLOPING AREAS DUE TO POSSIBLE LANDSLIDES; CLEAN CREEKS, CANALS AND DITCHES; STORE HARVESTED CROPS IN ELEVATED AND COVERED PLACES. WATER IMPOUNDING IS ADVISABLE DURING HEAVY RAINS FOR FUTURE USE
FOR WET (IRRIGATED) AND MOIST AREAS: LAND AND SEEDBED PREPARATION, PLANTING AND TRANSPLANTING OF RICE, CORN AND OTHER CROPS, REMOVAL OF WEEDS AND CULTIVATION, HARVESTING OF MATURED CROPS, USE COVERED VANS IN DELIVERY OF GOODS IN THE MARKET; CLEAN CREEKS, CANALS AND DITCHES FROM IMPEDIMENTS TO PROVIDE NATURAL FLOW OF WATER SPECIALLY DURING THUNDERSTORMS AND HEAVY RAINFALL TO AVOID POSSIBLE FLOODING.
FOR (RAINFED) DRY AREAS WITH LIGHT TO MODERATE WINDS: FUNGAL DEVELOPMENT CAN CAUSE DAMAGE TO STORED FARM PRODUCTS, THUS, IT IS ADVISED TO KEEP BARNS AND CROP STORAGE ROOMS TO BE CLEAN, DRY, WELL VENTILATED AND IN SAFE CONDITION; DELIVERY OF GOODS IN COVERED VANS CAN BE DONE. BE VIGILANT AND ALWAYS INSPECT YOUR RICE FIELDS FOR OCCURRENCE OF PESTS AND DISEASES, ASK FOR PRECAUTIONARY MEASURES OR CONSULT THE EXPERTISE OF YOUR LOCAL AGRICULTURIST.
Fishing Advisories

THE COASTAL WATERS OVER SOUTHERN LUZON, VISAYAS AND MINDANAO WILL BE MODERATE TO ROUGH. FISHERMEN AREA ADVISED NOT TO VENTURE OUT INTO SEA IN THESE AREAS. ELSEWHERE, COASTAL WATERS WILL BE MODERATE. REMINDERS TO OUR FISHERFOLKS TO BE ALWAYS CAREFUL SPECIALLY THOSE USING SMALL SEACRAFTS, BRING EMERGENCY KIT, AND BE UPDATED FOR THE LATEST WEATHER UPDATE AND FARM ADVISORIES

Red Tide Alert
Courtesy of BFAR, Shellfish Bulletin No. 16, Issued on 09 September 2019

ALL TYPES OF SHELLFISH AND ACETES OR ALAMANG GATHERED AT PUERTO PRINCESA BAY, PUERTO PRINCESA CITY IN PALAWAN; THE COASTAL WATERS OF SAN PEDRO BAY, IRONG-IRONG BAY AND SILANGA BAY IN WESTERN SAMAR; COASTAL WATERS OF DAUIS AND TAGBILARAN CITY IN BOHOL; AND CANCABATO BAY, TACLOBAN CITY IN LEYTE ARE POSITVE FOR PARALYTIC SHELFISH POISON AND NOT SAFE FOR HUMAN CONSUMPTION. MOREVER, CAMBATUTAY AND MAQUEDA BAYS IN WESTERN SAMAR, AND LIANGA BAY IN SURIGAO ARE NOW FREE OF THE TOXIC RED TIDES. FISHERMEN ARE ADVISED NOT TO GATHER OVER THESE AREAS. THUS, ALL TYPES OF SHELLFISH AND ACETES SP. OR ALAMANG GATHERED FROM THE AREA SHOWN ABOVE ARE NOT SAFE FOR HUMAN CONSUMPTION.

MTR VERIFIED BY: FEV
10 - Day Regional Agri-Weather Information

DEKAD NO. 26      SEPTEMBER 11-20, 2019

Philippine Agri-Weather Forecast
The weather systems that will likely affect the whole country are the low pressure area (LPA), tropical cyclone, monsoon trough and southwest monsoon.
The tropical cyclone “Marilyn” is expected to enter the Philippine Area of Responsibility (PAR) during the early days of the forecast period. Cloudy skies with scattered rainshowers and thunderstorms will be experienced in Zamboanga, Bicol Region and Visayas while the rest of the country will have partly cloudy to cloudy skies with isolated rainshowers and thunderstorms. As the tropical cyclone moves away from the country, the areas in Metro Manila, MIMAROPA, CALABARZON and the provinces of Bataan, Zambales and Aurora will experience cloudy skies with scattered rainshowers and thunderstorms while the rest of the country are expected to have partly cloudy to cloudy skies with isolated raishowers and thunderstorms. After this, the above-mentioned areas, Ilocos Region and the eastern sections of Cagayan Valley will have cloudiness with scattered rainshowers and thunderstorms. The remaining portions of the archipelago will have partly cloudy to cloudy skies with chances of isolated rainshowers. During the latter part of the forecast period, better weather conditions will prevail over most parts of the country except for the central and southern sections of Luzon where cloudy skies with scattered rainshowers and thunderstorms are expected.
During the early days of the dekad, winds coming from the northwest to west will prevail over Luzon while winds from the southwest to west will blow over Visayas. Mindanao will have winds from the south to southwest. Afterwards, southwesterly windflow will progress over Luzon and Visayas while winds from south to southwest are expected over Mindanao. During the latter part of the dekad, the Northern and Central Luzon will have winds from the northwest to west while the rest of Luzon will experience winds from the southwest to west. Winds coming from the south to southwest will prevail over Visayas and Mindanao.

During the first half of the forecast period, moderate to rough seas are expected over the eastern section of the Bicol Region, the western and eastern sections of Visayas and Mindanao. As the tropical cyclone moves toward the northwest, the moderate to rough coastal waters will progress over the eastern seas of Luzon and the western sections of Luzon. The rest of the country will have a slight to moderate movement of seas. During the latter part of the forecast period, slight to moderate seas will prevail over the archipelago except in the extreme portion and western section of Luzon.
ENSO-neutral condition is present in the tropical Pacific.
Farm Advisories

During wet season, transplanting and replanting crops at approximately 20 x 20 cm distance between hills are needed to compensate for low sunlight and prevent mutual shading. Likewise, it is important to level the field properly to attain uniform water depth in the field. This helps suppress growth of weeds and maximizes fertilizer availability in the field.

Since most soils provide only limited amount of nutrients to the crop, fertilizers need to be applied in order to increase grain yield. In some cases, fertilizers are also added to improve the soil’s physical condition. The amount and type of fertilizer applied are determined on the assumption that 1 ton of grain will remove 15 kg nitrogen (N), 2–3 kg phosphorus (P) and 15–20 kg potassium (K). These base rates need to be modified according to the soil type, the season, the crop condition, prevailing weather conditions and efficiency of application. Consult your local agriculturist, SARAI or Philrice experts for best option.

Regional Agrometeorological Situation and Prognosis
Region 1 Ilocos Region Region 2 Cagayan Valley CAR (Cordillera Administrative Region) Region 3 Central Luzon NCR (National Capital Region) Region 4A CALABARZON Region 4B MIMAROPA Region 5 Bicol Region Region 6 Western Visayas Region 7 Central Visayas Region 8 Eastern Visayas Region 9 Zamboanga Peninsula Region 10 Northern Mindanao Region 11 Davao Regio Region 12 SOCCSK-SARGEN Region 13 CARAGA ARMM (Autonomous Region of Muslim Mindanao)

Region 1 Ilocos Region

Forecast Rainfall (mm):

100 – 400

Rainy Days (0.1mm or more):

7 – 10

Actual Soil Moisture Condition:

Wet

Range of Relative Humidity (%):

75 – 100

Min - Max Temperature (°C):

19 – 32

Crop Phenology, Situation and Farm Activities:

Harvesting of corn in some areas are still on-going. Most rice in irrigated farms are in the vegetative and flowering stages. Weed removal and fertilizer applications are on-going.

Region 2 Cagayan Valley

Forecast Rainfall (mm):

Extreme northern part: 100 – 350; Rest: 25 – 100

Rainy Days (0.1mm or more):

5 – 9

Actual Soil Moisture Condition:

Dry – Nueva Vizcaya; Moist – Isabela; Wet – rest of the region

Range of Relative Humidity (%):

68 – 100

Min - Max Temperature (°C):

Upland areas: 18 – 29; Rest: 21 – 34

Crop Phenology, Situation and Farm Activities:

Harvesting of corn in some areas are ongoing while some field is in land preparation. Irrigated and rainfed rice and corn are in different stages. Harvesting of eggplant, cassava ginger, radish, potatoes and ampalaya is on-going.

CAR (Cordillera Administrative Region)

Forecast Rainfall (mm):

150 – 500

Rainy Days (0.1mm or more):

5 – 9

Actual Soil Moisture Condition:

Wet

Range of Relative Humidity (%):

73 – 100

Min - Max Temperature (°C):

14 – 27

Crop Phenology, Situation and Farm Activities:

Upland rice is in seedling and vegetative stages while some are still in flowering stages. Harvesting of cabbage, celery, peanuts, lettuce, carrots, tomatoes, sweet peas, beets, onions, pechay, broccoli and potatoes is on-going. Weed removal is being done. Continuous rains affect the growth of some crops.

Region 3 Central Luzon

Forecast Rainfall (mm):

Eastern part: 25 – 100; Western part: 100 – 450

Rainy Days (0.1mm or more):

5 – 9

Actual Soil Moisture Condition:

Dry – Baler; Wet – rest of the region

Range of Relative Humidity (%):

75 – 100

Min - Max Temperature (°C):

21 – 34

Crop Phenology, Situation and Farm Activities:

Some irrigated rice are in vegetative, flowering and yield formation stages while some are in the maturing stage. Harvesting of cucumber, squash, carrots, cabbage, tomatoes, ampalaya, potatoes, calamansi, eggplant and onions is on-going. Sugarcane field maintenance – weeding and watershoots removal are on-going. Planting of corn in some areas has started.

NCR (National Capital Region)

Forecast Rainfall (mm):

25 – 150

Rainy Days (0.1mm or more):

6 – 10

Actual Soil Moisture Condition:

Wet

Range of Relative Humidity (%):

70 – 95

Min - Max Temperature (°C):

24 – 32

Crop Phenology, Situation and Farm Activities:

Weeding in vegetable garden is being done. Preparation of backyard vegetable plots and planting of pepper, pechay, cabbage, lettuce, spinach and mustard are on-going. Harvesting of okra, malunggay, alugbati and cabbage is also on-going.

Region 4A CALABARZON

Forecast Rainfall (mm):

25 – 150

Rainy Days (0.1mm or more):

4 – 8

Actual Soil Moisture Condition:

Dry – Infanta and Alabat; Wet – rest of the region

Range of Relative Humidity (%):

70 – 100

Min - Max Temperature (°C):

Upland areas: 20 – 28; Rest: 22 – 34

Crop Phenology, Situation and Farm Activities:

Early planted rainfed palay is in the ripening stage. Irrigated rice and corn are in different stages in several farm areas. Planting of beans and leafy vegetables is on-going. Harvesting of lanzones, rambutan, pineapple, string beans, eggplant, cabbage, lettuce, dragon fruit, banana, papaya, santol, tomatoes and jackfruit is still on-going.

Region 4B MIMAROPA

Forecast Rainfall (mm):

0 – 75

Rainy Days (0.1mm or more):

6 – 10

Actual Soil Moisture Condition:

Dry – Puerto Prinsesa; Moist – Romblon; Wet – rest of the region

Range of Relative Humidity (%):

68 – 98

Min - Max Temperature (°C):

20 – 33

Crop Phenology, Situation and Farm Activities:

Planting of irrigated rice, corn, cucumber, ampalaya, squash, chayote, eggplant and pechay is on-going. Land and seedbed preparations are still on-going in some field areas. Irrigated rice and corn are in vegetative, flowering and yield formation stages. Harvesting of cassava, eggplant, banana, cashew, upo, pineapple, papaya and sweet potatoes is in progress.

Region 5 Bicol Region

Forecast Rainfall (mm):

0 – 100

Rainy Days (0.1mm or more):

4 – 8

Actual Soil Moisture Condition:

Dry – Masbate; Moist – Camarines Norte; Wet – rest of the region

Range of Relative Humidity (%):

70 – 100

Min - Max Temperature (°C):

22 – 33

Crop Phenology, Situation and Farm Activities:

Rice is in different stages. Planting of corn, beans, cassava, carrot, sweet pepper, patola, tomato, squash, ginger, eggplant, ampalaya, gabi, lettuce and radish is on-going. Harvesting of tomatoes, ubi, ampalaya, okra, sweet potatoes, eggplant, gabi, pechay, papaya, jackfruit, squash, guyabano, upo, banana and cassava is still in progress.

Region 6 Western Visayas

Forecast Rainfall (mm):

0 – 75

Rainy Days (0.1mm or more):

4 – 8

Actual Soil Moisture Condition:

Dry – Negros Occidental; Wet – rest of the region

Range of Relative Humidity (%):

68 – 100

Min - Max Temperature (°C):

22 – 32

Crop Phenology, Situation and Farm Activities:

Sugarcane is in maturing and ripening stages. Corn is in vegetative and flowering stages. Irrigated palay is in ripening stage. Some fields are in land and seedbed preparations. Harvesting of rambutan, guyabano, eggplant, leafy vegetables, tomatoes, carrots, potatoes, chayote and papaya is also on-going.

Region 7 Central Visayas

Forecast Rainfall (mm):

0 – 75

Rainy Days (0.1mm or more):

4 – 8

Actual Soil Moisture Condition:

Dry

Range of Relative Humidity (%):

68 – 100

Min - Max Temperature (°C):

22 – 34

Crop Phenology, Situation and Farm Activities:

Some rice are in the vegetative and flowering stages. Some fields are in land preparation. Planting of irrigated rice and corn, cabbage, carrots, pechay, spinach and radish is in progress. Harvesting of rambutan banana, guyabano, eggplant, sweet potatoes, tomatoes, jackfruit, ginger, onions and papaya is still on-going.

Region 8 Eastern Visayas

Forecast Rainfall (mm):

0 – 75

Rainy Days (0.1mm or more):

3 – 7

Actual Soil Moisture Condition:

Moist – Leyte; Dry – rest of the region

Range of Relative Humidity (%):

70 – 100

Min - Max Temperature (°C):

21 – 34

Crop Phenology, Situation and Farm Activities:

Irrigated rice and corn are still in vegetative, flowering and yield formation stages. Planting of rainy season corn, soybean, eggplant, cabbage, okra, patola, squash, lettuce, string beans tomato and ampalaya is on-going. Harvesting of lanzones, rambutan, guyabano, banana, papaya, carrots, lettuce, radish, squash, cabbage and pechay are being done. Drying and weeding of palay have started.

Region 9 Zamboanga Peninsula

Forecast Rainfall (mm):

0 – 75

Rainy Days (0.1mm or more):

3 – 7

Actual Soil Moisture Condition:

Moist – Zamboanga del Norte; Dry – Zamboanga del Sur

Range of Relative Humidity (%):

70 – 100

Min - Max Temperature (°C):

21 – 35

Crop Phenology, Situation and Farm Activities:

Irrigated rice and corn are still in vegetative, flowering and yield formation stages. Planting of rainy season corn, soybean, eggplant, cabbage, okra, patola, squash, lettuce, string beans tomato and ampalaya is on-going. Harvesting of lanzones, rambutan, guyabano, banana, papaya, carrots, lettuce, radish, squash, cabbage and pechay is being done. Drying and weeding of palay have started.

Region 10 Northern Mindanao

Forecast Rainfall (mm):

25 – 150

Rainy Days (0.1mm or more):

3 – 7

Actual Soil Moisture Condition:

Moist – Bukidnon; Dry – rest of the region

Range of Relative Humidity (%):

65 – 100

Min - Max Temperature (°C):

Bukidnon and upland areas: 18 – 29; Rest: 21 – 34

Crop Phenology, Situation and Farm Activities:

Planting of sweet potatoes, ubi, cassava, ginger, onions, pechay, lettuce, cabbage, mustard and potatoes is in progress. Irrigated rice is in different stages. Harvesting of coconut, mangosteen, lanzones, durian, rambutan, banana, pineapple, papaya, marang, guyabano, lettuce, carrots, upo, cucumber, pechay and cabbage is still in progress.

Region 11 Davao Regio

Forecast Rainfall (mm):

25 – 150

Rainy Days (0.1mm or more):

1 – 5

Actual Soil Moisture Condition:

Wet – Davao City; Moist – rest of the region

Range of Relative Humidity (%):

68 – 95

Min - Max Temperature (°C):

Upland areas: 19 – 27; Rest: 22 – 35

Crop Phenology, Situation and Farm Activities:

Planting and transplanting of irrigated rice and corn in some areas are still on-going. Some rice are in vegetative, flowering and yield formation stages. Harvesting of durian, lanzones, marang, guyabano, mangosteen, rambutan, banana, pineapple, papaya, carrots, cabbage, pechay, chayote, eggplant, sweet potatoes, cassava, ginger and coconut is still in progress.

Region 12 SOCCSK-SARGEN

Forecast Rainfall (mm):

0 – 50

Rainy Days (0.1mm or more):

0 – 5

Actual Soil Moisture Condition:

Dry

Range of Relative Humidity (%):

65 – 98

Min - Max Temperature (°C):

Upland areas: 18 – 29; Rest 22 – 35

Crop Phenology, Situation and Farm Activities:

Watering activities for standing vegetable crops are being continued. Harvesting of durian, mangosteen, banana, pomelo, marang, guyabano, cassava, sweet potatoes and ubi is still on-going. Rice in some farm fields are in vegetative and flowering stages.

Region 13 CARAGA

Forecast Rainfall (mm):

0 – 100

Rainy Days (0.1mm or more):

3 – 7

Actual Soil Moisture Condition:

Wet – Agusan del Norte; Moist – Surigao del Sur, Dry – Surigao del Norte

Range of Relative Humidity (%):

65 – 98

Min - Max Temperature (°C):

Upland areas in Agusan del Sur: 19 – 30; Rest 21 – 36

Crop Phenology, Situation and Farm Activities:

Planting and transplanting of irrigated rice and corn are in progress. Planting of ginger, gabi, cabbage, soybean, pechay, cassava, tomato, upo and eggplant is being done. Harvesting of avocado, lanzones, jackfruit, pineapple, mangosteen, dragon fruit, pomelo, banana, papaya, eggplant, tomatoes, pechay, cabbage, mustard, spinach, cassava and sweet potatoes is also on-going.

ARMM (Autonomous Region of Muslim Mindanao)

Forecast Rainfall (mm):

0 – 75

Rainy Days (0.1mm or more):

3 – 7

Actual Soil Moisture Condition:

Moist

Range of Relative Humidity (%):

55 – 98

Min - Max Temperature (°C):

Upland areas: 19 – 30; Rest 21 – 35

Crop Phenology, Situation and Farm Activities:

Harvesting of leafy vegetables, cassava, ubi, banana, pineapple, jackfruit, mangosteen, pomelo, papaya, rambutan, marang and durian is still in progress. Planting of rice, corn, leafy vegetables, ampalaya, okra, upo and sweet potatoes is on-going. Land preparations in some selected pump irrigated areas is being done.

Prepared By:

MA. FE. E. VILLAMORA
OIC, FWSS



EDNA L. JUANILLO
Chief
Climatology and Agrometeorology Division (CAD)