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

I. AGROCLIMATIC SUMMARY::

Partly cloudy to cloudy skies is the prevalent sky condition of the area. Rainfall amount of 35.3 mm with 3 rainy days and a total evaporation of 127.0 mm are normal values for the month.

Normal relative humidity is 82%. Leaf wetness duration is from 6 to 12 hours. Daylight duration is 11 hours and 12 minutes with 59% of total bright sunshine. This situation gives an amount of 16.5 MJ/m2 of solar radiation during most days of the month. Northerly to northeasterly winds (39.6 kpd) will prevail.

The maximum and minimum air temperature are 32.5 °C and 21.3°C, respectively.

II. AGROCLIMATIC DATA (AVERAGE)::

Decade Rainfall Rainy P(TC)** Tot AIR TEMPERATURE RH Solar Wind
(10 Day) (mm) days % evap. Max. Min. (%) Rad. Speed
        (mm) (°C) (°C)   MJ/m2 (kpd)
November                  
1-10 13.9 1 5 42.1 32.8 21.8 83 16.6 36.3
11-20 14.7 1 14 42.1 32.7 21.3 82 16.3 27.8
21-31 6.7 1 5 42.8 32.2 20.7 82 16.5 44.8

** Probability of having a Tropical Cyclone

III. TROPICAL CYCLONE

Listed below are tropical cyclones (TC) that crossed Ilocos Norte which registered gusty/strong winds and heavy rains during the month of November from 1981-2006.

TC Name Year and Date Occurrence RR
T Anding Nov 24-25, 1981 17.4
T Welpring Nov 17-19, 1984 10.8
T Warling Nov 08-14, 1991 14.1
T Kusing Nov 01-02, 1993 5.2
TD Tuyang Nov 10-14, 1996 208.5
TD Violeta Nov 22-24, 2004 9.8
TD Winnie Nov 29-30, 2004 0.4
TD Undoy Nov 10-11, 2005 0
TS Pepeng Nov 19-20, 2005 2.0
T Queenie Nov 10-11, 2006 56.0
T Reming Nov 28-Dec 3, 2006 3.2