Gale Warning
Issued at: 05:00 AM TODAY , 21 October 2019
Gale Warning # 15 (Final)
For: MODERATE TO STRONG WINDS ASSOCIATED WITH THE NORTHEASTERLY SURFACE WINDFLOW.

Gale Warning in PDF file



Weather Advisory
Issued at: 10:00 AM 2019 September 17
Weather Advisory in PDF file




General Flood Advisories - Regional
 General Flood Advisory issued as of 7 PM, 20 August 2018



Advisories


Monthly Climate Assessment and Outlook (July-August 2018)

Issued: 06 August 2018

Monthly Rainfall Forecast
RAINFALL FORECAST  (September 2018 - February 2019) 
UPDATED: 29 August 2018 (next update September 26, 2018)


Regional Rainfall Forecast
Issued: 29 August 2018
Valid for: September 2018 - February 2019
Farm Weather Forecast and Advisories
ISSUED: 8 AM,  FRIDAY,  MAY 24, 2019
VALID UNTIL: 8 AM,  SATURDAY, MAY 25
, 2019
FWFA:  N0. 19-144

Ten-Day Regional Agri-Weather Information
DEKAD NO. 15   MAY 21 - 31, 2019
PHILIPPINE AGRI-WEATHER FORECAST
The weather systems that will affect the whole country are the frontal system, easterlies, ridge of high pressure area, intertropical convergence zone (ITCZ) and low pressure area (LPA).

Seasonal Climate Outlook
Issued:  13 July 2018
FOR July - December 2018
PDF 




Astronomical Diary
Issue for October 2018
The October Orionids meteor shower will be active from October 17-25, 2017.




   PAGASA webmail  Learning Tools  Bidding 

  Training Activities  Vacancy  Research-and-Development

  Engineering  faqupdate  Publications 

Cynthia P. Celebre
1993

The occurrence and characteristics of the 40- to 50-day oscillation in the Philippines is studied. Station pressure, rainfall and wind data from different stations located in the country were filtered and subjected to spectral and cross-spectral analyses.

Results of the spectra of station pressure indicate that the oscillation extends from the southernmost (Zamboanga) to the northernmost (Basco) station and from the extreme western (Pto. Princesa) to the easternmost (Guiuan) station. Spectra of wind data showed that the phenomenon seems to be present at all levels of the atmosphere, while spectral peaks at the periods of interest are also present for rainfall. Cross-spectral results of station pressure also indicate that the oscillations in one station are also present in other stations. The phase angle distribution suggests that most oscillations in the area of study propagate westward near the equator, then northwestward to north northwestward in the higher latitudes. Some disturbances that originate from the west travel northeastward to northward. One possible application of the results of this study is the determination of the probable preferred seasonal tracks of tropical cyclones in the Philippines.

Maribel G. Enriquez
1993

The concentrations of carbon monoxide, hydrocarbon, nitric oxide, nitrogen dioxide, sulfur dioxide, oxidant and dust at Manila and Quezon City were studied in relation to the volume of rainfall (mm) and temperature readings (degree celsius). The concentrations of these pollutants were quite high during the months when rainfall profiles were at minimum from October to June in Manila and from October to April in Quezon City and temperature profiles at its maximum (March to June). Moreover, the study showed promising relationship between the weather elements and atmospheric pollutants profiles based on correlation coefficient which demonstrated a five-percent (5%) level of significance and regression equations. Also, a lesson guide for this study was prepared that may be useful as a tool for science teaching particularly in air pollution.