AGROCLIMATIC INFORMATION FOR AGRICULTURAL PLANNING AND OPERATION IN ILOCOS NORTE PARTICULARLY BATAC AND SURROUNDING AREAS FOR THE MONTH OF APRIL

I. AGROCLIMATIC SUMMARY::

Partly cloudy skies is prevalent in the area. Total rainfall amount of 13.8 mm with 1 rainy days (light rains) and a total evaporation of 189.7 mm are the normal values for the month.

Atmospheric and soil condition remains dry hence, good drying condition for agricultural harvest prevails. Normal relative humidity in the morning is 78%. Leaf wetness duration is up to 6 hours only. Daylight duration is 12 hours and 43 minutes with 63% total bright sunshine. This situation gives an amount of 22.2 MJ/m2/day of solar radiation during most days of the month. Westerly and southeasterly winds prevail.

The normal maximum air temperature is 33.9 °C. An extreme temperature of 38.4 °C was recorded on April 15, 1986. Minimum air temperature is 22.6 °C with an extreme coolness of 17.2°C as what was recorded on April 3, 1980.

II. AGROCLIMATIC DATA (AVERAGE)::

Decade Rainfall Rainy Tot AIR TEMPERATURE RH Solar Wind
(10 Day) (mm) days evap. Max. Min. (%) Rad. Speed
      (mm) (°C) (°C)   MJ/m2 (kpd)
April                
1-10 2.3 0 60.9 33.6 22.1 80 21.6 43.8
11-20 1.6 0 63.4 34.0 22.7 78 22.1 46.3
21-31 9.9 1 65.4 34.2 23.1 77 22.8 47.9

III. TROPICAL CYCLONE

Normal tropical cyclone track is far from the area but there was a tropical cyclone that affected Ilocos Norte during the month of April.

T Amang  April 16-24, 2003