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

I. AGROCLIMATIC SUMMARY::

Generally cloudy skies with scattered to occasional rains is the normal weather in the area. Total rainfall amount averages 431.4 mm with 17 rainy days. Southwest monsoon rains usually prevail. Total evaporation of 142.3 mm are the normal values for the month.

Soil moisture is generally wet and it is conducive for farming and planting of lowland rice. Humid environment is felt during the month so drying condition is poor. Leaf wetness duration is from 6 to 12 hours. Daylight duration is 13 hours and 03 minutes with 41% total bright sunshine. This situation gives an amount of 19.0 MJ/m2 of solar radiation during most days of the month. Southerly to southeasterly winds prevail.

The normal maximum and minimum air temperature is 32.5 °C and 24.0 °C.

II. AGROCLIMATIC DATA (AVERAGE)::

Decade Rainfall Rainy P(W)* P(TC)** Tot AIR TEMPERATURE RH Solar Wind
(10 Day) (mm) days % % evap. Max. Min. (%) Rad. Speed
          (mm) (°C) (°C)   MJ/m2 (kpd)
July                    
1-10 133.6 5 50 43 48.9 32.6 24.1 83 19.7 39.6
11-20 135.1 5 50 77 46.0 32.5 23.9 84 18.7 38.2
21-31 162.7 7 79 57 47.4 32.3 24.1 85 18.6 43.0

* Probability of wet decade (>50 mm per decade)

** Probability of having a Tropical Cyclone

III. TROPICAL CYCLONE

Northern Luzon which includes Ilocos Norte is within the normal tropical cyclone track. Historical record shows the following tropical disturbances that crossed or passed closed over the area (1981-2006).

TC Name Year and Date Occurrence
TS Juling July 19-21, 1981
TY Iliang July 27-29, 1982
TS Biring July 2, 1984
TY Gading July 8-10, 1986
TY Huaning July 17-19, 1988
TY Goring July 14-16, 1989
TS Deling July 5-10, 1990
TD Emang July 27-29, 1990
TY Gening July 16-19, 1991
TS Herming July 20-23, 1991
TD Ditang July 17-21 1992
TS Narsing July 28-29, 1993
TY Emang July 4-6, 1994
TY Iliang July 7-10, 1994
TS Loleng July 10-11, 1994
TD Miding July 14-16, 1994
TD Norming July 18-20, 1994
TD Karing July 27-31, 1995
TY Gloring July 21-27, 1996
TY Huaning July 28-31, 1996
TD-T Edeng July 2-9, 2000
TD Gloring July 13-14, 2000
TD Huaning July 21-24, 2000
TY Feria July 3-5, 2001
TS Gorio July 10-11, 2001
TS Huaning July 23-24, 2001
TY Isang July 27-29, 2001
TY Gloria July 7-9, 2002
TS Hambalos July 8-9, 2002
TY Inday July 12-14, 2002
TY Harurot July 19-23, 2003
TS Julian July 14, 2004
TY Feria July 17-19, 2005
TY Ester July 6-9, 2006
TY Florita July 10-14, 2006
TY Glenda July 23-26, 2006
TD Henry July 29-Aug. 1, 2006
TY Bebeng July 11-13, 2007
TS Helen July 14-16, 2008
TY Igme July 25-28, 2008
TD Gorio July 9-11, 2009
TS Huaning July 12-14, 2009
TS Isang July 16-18, 2009
TS Jolina July 31- August 2, 2009
TS Juaning Jul 26-30, 2011
TS Enteng Jul 17, 2012
TD Ferdie Jul 20-22, 2012
TS Gener Jul 29, 2012
TS Gorio July 1, 2013
TY Huaning July 14, 2013
TS Isang July 16-18, 2013
TY Florita July 5-8, 2014
TS Henry July 21-23, 2014
TS Inday July 30-Aug 3, 2014
TS Egay July 3-9, 2015
T Falcon July 10-11, 2015
STS Carina July 30-31, 2016
TS Huaning Jul 30, 2017
TD Henry Jul 16-17, 2018
STS Inday Jul 19-20, 2018
TD Josie Jul 21-22, 2018
TD Egay Jul 1, 2019
TS Falcon Jul 16-18, 2019
TD Carina Jul 13-14, 2020

TD - Tropical Depression ( >62 kph)

TS - Tropical Storm (62-88 kph)

STS – Severe Tropical Storm (89-117 kph)

TY - Typhoon (118-220 kph)

STY - Super Typhoon (< 222 kph)