DEKAD NO. 01 JANUARY 1-10, 2018
The weather systems that will affect the whole country are northeast monsoon, tail-end of a cold front, easterlies and low pressure area (LPA).
During the first half of the dekad, the regions of Cagayan Valley, Bicol, Eastern Visayas and the provinces of Aurora and Quezon will have cloudiness with scattered rainshowers and thunderstorms while Batanes and Babuyan Group of Islands will experience light rains due to the northeast monsoon. The regions of Ilocos and Cordillera are expected to have isolated light rains while the rest of the country will have good weather except for having isolated localized thunderstorms particularly at the eastern section of the country. During the second half of the dekad, Visayas and Mindanao will have cloudy skies with rainshowers and thunderstorms while Luzon will have isolated light rains throughout the rest of the forecast period.
During the early days of the dekad, northeasterly winds will prevail over Northern Luzon while Visayas and the rest of Luzon will have winds from the east to northeast. Winds coming from the east to northwest will blow over Mindanao. After this, northeasterly windflow will gradually progress over Luzon and Visayas while Mindanao will have winds coming from the northeast to northwest. Gradual shift of wind direction is expected to take place on the latter days of the dekad. Winds coming from the north to northeast will blow over over Luzon while Visayas will have winds from the northeast to southeast. Mindanao will have winds coming from the north to northeast.
The seaboards of Northern Luzon will be moderate to rough during the first day of the dekad while the rest of the archipelago will have slight to moderate seas. After this, moderate to rough seas are expected over Luzon and the eastern seaboards of Visayas. The areas not mentioned above will have slight to moderate seas. During the latter part of the first half of the dekad, the northern and central portion of Luzon will have moderate to rough seas while the coastal waters over Visayas, Mindanao and the rest of Luzon will be slight to moderate. During the early days of the second half of the dekad, the seaboards of Luzon and the eastern section of Visayas will gradually become moderate to rough while the remaining coastal waters of the archipelago will be slight to moderate. Afterwards, Luzon is expected to have moderate to rough seas while the rest of the archipelago will have slight to moderate seas throughout the remaining forecast period.
The eastern and central equatorial Pacific is in neutral condition.
The low temperatures of the winter season can cause chilling and freezing of plants and animals. The lower temperature prevailing during the growing period can prolong the vegetative period of standing crops. Plants require a specific total amount of heat units or degree days that determines the number of days to maturity. Very low temperature occurring during the flowering stage can be cause of physical malformation of plant parts and fruits. *
REGION 1 Ilocos Region
Forecast Rainfall (mm):
0 - 25
Rainy Days (0.1mm or more):
0 - 3
Actual Soil Moisture Condition:
Range of Relative Humidity (%):
60 - 95
Min - Max Temperature (°C):
24 - 32
Crop Phenology, Situation and Farm Activities:
Most rice is in vegetative stage. Harvesting of beans, patola, tomatoes, and onions is on-going. Land preparation, transplanting and planting of rice in some areas are on-going. Planting of peanut, garlic, sugarcane, eggplant and onion are in progress.
SCF/ RAAM/ MAM/ DPO/ RMP/ ACC
MA. FE E. VILLAMORA
EDNA L. JUANILLO
Climatology and Agrometeorology Division (CAD)