astronomical events 2012
TRANSCRIPT
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ASTRONOMICAL EVENTS
AND WEATHER DISTURBANCES
(From August to September 2012)
Anna Marie L. Fajardo
Natural Science 2
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ASTRONOMICAL EVENTS
AUGUST 7-14, 2012SPICA, SATURN AND MARS AT DUSKS
The planets Saturn and Mars and the star Spica are close together in the
first half of the month, low above the western horizon at dusk. They will form a
triangle on the 7th an hour after sunset. Saturn will be the top of the triangle,
while Mars will be on the lower right corner. Each side of the triangle is about 5
degrees. On the 14th, they will form an almost straight line: Saturn topmost with
Mars lying between Saturn and Spica.
View of the western horizon at dusk on August 7 and 14, 2012 as seen from
Manila Philippines. Images were screenshots from Stellarium.
August 12, 2012OCCULTATION OF JUPITER BY THE MOON
For Philippine observers, the waning crescent Moon will pass in front of
Jupiter and its moons during a relatively rare event called occultation on the
morning of August 12. In astronomy, an occultation occurs when one object is
hidden by another larger object that passes between it and the
observer. Prospects and timings for the event vary with location.The event takes
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place while Jupiter and the Moon are low in the sky during the were hours of the
morning.
Jupiter and its largest satellites passing behind Earths moon.
AUGUST 12-13, 2012METEOR SHOWER IN THE PHILIPPINES
Filipinos glimpsed and spotted a heavenly spectacle as the annual Perseids
meteor shower reaches its peak on August 12-13, 2012.
Philippine Atmospheric, Geophysical, and Astronomical Services Administration
(PAGASA) said August is one of the most popular times of the year to observemeteor showers. The radiant point for this shower will bE in the constellation
Perseus.
It noted that the Perseids meteor was observed with its peak in the late evening
and early morning hours from August 12-13. About 15 bright and swift-moving
meteors can be observed per hour. The meteor shower will last until August 13.
PAGASA cited that the peak of meteor shower is just one day after full moon.
They pointed out that meteors are easiest to see if there is no moonlight, light
pollution at all and if the weather permits.
The Perseids meteor shower radiates out from the constellation Perseus, which is
located in the eastern horizon during August.
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The Perseids Meteor Shower
AUGUST 14, 2012A LINE OF PLANETS ALONG WITH A THIN, WANING, CRESCENT
MOON BEFORE DAWN
Before dawn on the morning of the 14th August the planets Mercury, Venus
and Jupiter and the Moon lined up in the eastern sky. Look for a very thin
crescent Moon to the upper right of Mercury an hour before sunrise in the
northeast. Venus is to the upper right of the Moon, and a few degrees above
them is Jupiter.
AUGUST 15, 2012DEVELOPING EL Nio 2012
Atmospheric circulation in the tropical Pacific continued to be near-normalin July 2012, although a persistent warming in the tropical Pacific Ocean
trending towards an El Ni & tildeno condition have been observed since June.
Warmer sea surface temperature strengthened in the central and eastern
equatorial Pacific ocean, a typical development stage of an El Nio. Likewise,
observed warmer temperatures below the surface of the entire equatorial
Pacific Ocean is a good indicator to sustain the evolving El Ni & tildeno
condition. Dynamical and statistical model forecasts suggest the El Nio will
likely develop in August or September.
El Nio periods are usually characterized by below normal rainfall conditionacross most areas of the country during the last quarter of the year (OND) and
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early months or first quarter (Jan-Mar) of the following year. Climate pattern in
the country during the months of July and August was generally influenced by
the moderate to strong westerlies, which reflect an active Southwest (SW)
monsoon activity, generating enhanced rainfall over most areas of the country.
This characterized the seasonal variability of El Ni&tildeno impact, where the
reverse happened during the early stages of warm episode, an enhancedrainfall in any time within the months of July, August, September instead of
below normal rainfall condition.
Based on the probabilistic El Ni & tildeno Southern Oscillation (ENSO) forecast
by the National Oceanic and Atmospheric Administration (NOAA) - Climate
Prediction Center (CPC), slightly more than 70% of the ENSO forecast models
predict El Ni & tildeno condition developing around August- October season,
continuing through the rest of 2012. Initial impact of the likely developing El
Ni&tildeno during September is below normal rainfall condition in the eastern
portions of Northern and Central Luzon, including Palawan, some portions ofWestern and Central Visayas and Western Mindanao. The rest of the country will
likely experience near to above normal rainfall conditions. Increased areas
experiencing drier than normal rainfall are likely during October.
The PAGASA will continue to closely monitor these conditions and regular
updates/advisories shall be issued as appropriate.
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AUGUST 22, 2012
WAXING CRESCENT MOON JOINS SATURN, MARS AND SPICA
On the evening of the 22nd, a waxing crescent Moon, Mars, and Saturn
will all lie within a circle just 6 in diameter.
AUGUST 24, 2010NEPTUNE AT OPPOSITION
The blue planet will be at its closest approach to earth and its face will be
fully illuminated by the sm. This is the best time to view Neptune. Due to its
distance, it will only appear as a tiny blue dot in all but the most powerful
telescopes.
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AUGUST 31, 2012BLUE TO MOON LIGHTED UP FRIDAY NIGHT SKY
Blue Moon rose in the night sky on a Friday night last August 1, 2010-- the
second full moon in August and it can be seen on the entire Philippinesespecially in Metro Manila.
The Blue Moon will rise 15 minutes before sunset, according to PAG-ASA.
The second full moon in a month is called Blue Moon.
However, the National Aeronautics and Space Administration said a Blue
Moon was not literally blue in color. Most Blue Moons look pale gray and white,
indistinguishable from any other Moon youve ever seen. Squeezing a second
full Moon into a calendar month doesnt change the physical properties of the
Moon itself, so its color remains the same. With that caveat in mind, however, beaware that on rare occasions it can happen. A truly-blue Moon usually requires
a volcanic eruption. Back in 1883, for example, people saw blue moons almost
every night after the Indonesian volcano Krakatoa exploded with the force of a
100-megaton nuclear bomb. Plumes of ash rose to the very top of Earths
atmosphere, and the Moon it turned blue!
The state weather bureau Philippine Atmospheric Geophysical and
Astronomical Services Administration said the moonrise Friday would be at 5:49
p.m. and sunset at 6:09p.m.
The next Blue Moon will be on July 31, 2015.
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SEPTEMBER 1,2012THE SKY THIS MONTH
(Planets' whereabouts)
At around 1:00 AM, on September 1, Jupiter will be found at about 25
degrees above the east northeastern part of the earth. It can be seen all
throughout the world.
Time (PST) of rise and set of some planets at 10-day interval
DATEMERCURY VENUS MARS JUPITER SATURN
Rise Set Rise Set Rise Set Rise Set Rise Set
ep. 7 4:50AM
5:29PM
2:37AM
3:22PM
9:31AM
9:03PM
11:21PM
12:12PM
8:39AM
8:25PM
ep. 175:32
AM
5:57
PM
2:45
AM
3:26
PM
9:20
AM
8:47
PM
10:45
PM
11:36
AM
8:04
AM
7:49
PM
ep. 276:09
AM
6:17
PM
2:54
AM
3:29
PM
9:11
AM
8:33
PM
*10:07
PM
10:58
AM
7:30
AM
7:14
PM
SEPTEMBER 22, 2O12STARS AND CONSTELLATION
Autumnal Equinox
Philippine nights will be longer as the Sun approaches the celestial equator.
Autumnal equinox will occur on September 22 when day and night will have
equal length on Earth.
The rich band of constellations and stars along the Milky Way from the
constellations Cygnus, the Swan, in the north to Sagittarius and Scorpius in thesouth, begin to give way this month to fainter constellations, many of them with
watery associations such as the constellations of Capricornus, the Sea Goat,
Aquarius, the Water Bearer and Pisces the Fish. The famous asterism Teapot in
the constellation of Sagittarius can be observed at about 40 to 47 degrees
above the southern horizon, an hour after sunset.
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THE PLANET
At around 1:00 AM, on September 1, Jupiter will be found at about 25 degrees
above the east northeastern horizon. It will be glowing at magnitude -2.3. The
largest planet will lie among the background stars of the constellation Taurus,the Bull. Jupiter will be visible in the morning twilight throughout the month. The
visibility of the planed Jupiter will last on the entire September.
Also, at 4:00 AM, Venus will be found at about 21 degrees above the east
northeastern horizon. The brightest planet will be shining brilliantly at magnitude -
4.1. This will last until September.
On the same date at 7:00 PM, Saturn and Mars will be found at about 23 and 29
degrees above the west southwestern horizon will lie among the backgroundstars of the constellation Virgo, the Virgin and Libra, the Scale, respectively. They
will be fine targets for telescoping sessions after sunset until it will no longer be
visible in the sky for observation on the last week of the month.
Also at 8:00 PM, Uranus will be found at about 15 degrees above the eastern
horizon with the background stars of the constellation Pisces, the Fish, while
Neptune will be found at about 43 degrees above the east southeastern horizon
and will lie among the background stars of the constellation Aquarius, the
Water-Bearer. Uranus will glow at magnitude +5.7 while Neptune will be faint atmagnitude +7.8. A binocular or a telescope and a star map will be needed to
observe these icy planets. Both planets will be visible in the evening sky
throughout the month.
Mercury will start to climb up the western horizon after sunset on the middle of
the month and onward. The planet will be difficult to observe due to its proximity
to the horizon and to the Sun.
DATE EVENT TIME (LST)
7 Moon at apogee (farthest distance to Earth) 2:00 PM
8 Jupiter 0.6 north of the Moon (occn.) 7:00 PM
10 Mercury in inferior conjunction 9:00 PM
13 Venus 4 north of the Moon 1:00 AM
18 Pluto stationary 5:00 AM
18 Saturn 5 north of the Moon 10:00 PM
19 Moon at perigee (nearest distance to Earth) 11:00 AM
20 Mars 0.2 north of the Moon (occn.) 5:00 AM
22 Autumnal Equinox 11:00 PM
25 Pallas at opposition 11:00 AM
27 Neptune 6 south of the Moon 7:00 PM
29 Uranus at opposition 3:00 PM
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SEPTEMBER 22, 2012SEPTEMBER EQUINOX
September equinox occurs at 14:49 UTC. The Sun will shine directly on the
equator and there will be nearly equal amounts of day and night throughout
the world. This is also the first day of fall (autumnal equinox) in the northern
hemisphere and the first day of spring (vernal equinox) in the southern
hemisphere.
SEPTEMBER 29, 2012URANUS AT OPPOSITION
The blue-green planet will be at its closest approach to Earth and its face
will be fully illuminated by the Sun. This is the best time to view Uranus. Due to its
distance, it will only appear as a tiny blue-green dot in all but the most powerfultelescopes.
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WEATHER
AUGUST 4, 2012TYPHOON GENER
Typhoon (JMA)
Category 2 typhoon (SSHS)
Duration July 26August 4
Intensity 130 km/h (80 mph) (10-min),
960 mbar(hPa)
On July 26, 2012, various forecast models showed that the 7th typhoon to
enter Philippine Area of Responsibility (PAR) for 2012 was named as GENER. it
was reported that a tropical depression had developed within an area of strongvertical windshear in the monsoon trough about 1,000 kilometres (620 mi) to the
southeast of Manila in the Philippines. During that day the shear relaxed before
during the next day, PAGASA issued a Tropical Cyclone Formation Alert on the
system. Its intensity is 130 kph (8omph), 960 mbar (hPa).
Typhoon Gener caused widespread rains in the Philippines due to the
enhancement of the southwest monsoon. On July 29, domestic and
international flights throughout the country were delayed and cancelled. Small
fishing crafts were advised to not engage in the water as a gale warning was
issued by PAGASA. The NDRRMC alerted their agency as the storm is expected
to bring heavy rains. Seaports were also advised to cancel their trips. Flooding is
imminent as different dams are expected to reach its critical level and possibly
release huge millimeters of water.
Typhoon GENER Forecast Tracks:
Coordinates: 20.9N, 124.4E
Forecast Tracks: (1) 420 km Northeast of Basco, Batanes on Wednesday
(2) 640 km North Northwest of Basco, Batanes on Thursday
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Signal Number 3: Batanes Group of Islands
Signal Number 2: Cagayan, Calayan Group of Islands, Babuyan Group of
Islands
Signal Number 1: Isabela, Kalinga, Apayao
Movement Speed: 7kph North Northwest
Strength: 120kph
Gustiness: 150kph
Rain Volume: 10 - 20 mm/hr (Heavy to Intense)
Distance to Land: 240 km East Northeast of Basco, Batanes
AUGUST 7, 2012SOUTHWEST MONSOON
Last August 7, 2010, heavy rain brought by the annual southwest monsoon,
combined with a tropical storm to the east of the Philippines, has submerged
large parts of the capital, Manila, displacing thousands and testing a recently
launched web-based early warning system, officials and residents said.
The monsoon dumped 323 millimetres of rain on the capital and surrounding
areas in the 24 hours of 5 and 6 August - more than half of the average monthly
rainfall of 504 millimetres in August - according to the Philippine Atmospheric
Geophysical and Astronomical Services Administration, the state weather
bureau.
AUGUST 12, 2012TYPHOON HELEN
Typhoon (JMA)
Category 1 typhoon (SSHS)
Duration August 12August 18
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Last August 12, 2012, the Philippine Atmospheric, Geophysical and
Astronomical Services Administration (PAGASA) started issuing advisories on the
system, naming it Helen, as a Tropical Depression. As the time passes by, it
became a typhoon. It was the 8th typhoon typhoon that entered Philippine Area
of Responsibility (PAR) for 2012 and sighted over vicinity of Aparri, Cagayan as of
11am August 15, 2012.
It enhanced the Southwest Monsoon or Habagat and broughtrains over western section of Southern Luzon which triggered flash floods and
landslide to prone areas.
Typhoon HELEN Forecast Track
Coordinates: 18.3N, 121.5E
Signal No. 2: (61-100kph winds): Benguet, Nothern
Aurora, Isabela, Ifugao, Kalinga, Apayao, Ilocos Norte/Sur, Abra, Nueva
Vizcaya, Mt. Province, Quirino, Cagayan, Babuyan, Calayan Group of Islands
and Batanes Group of Islands
Signal No. 1: (45-60kph winds) : La Union, Nueva Ecija, Pangasinan, Tarlac and
rest of Aurora
Forecast Tracks:
(1) 160 km Northwest of Laoag City - Thursday
(2) 510 km Northwest of Laoag City - Friday
Movement Speed: 13kph West Northwest
Strength: 75 kph near the center
Gustiness: 90 kph
Rain Volume: 20-35 mm/hr (Intense to Torrential) within 500 km diameter
Distance to Land: over vicinity of Aparri, Cagayan
Landfall: Palanan, Isabela at 1am August 15, 2012
Intensity 120 km/h (75 mph) (10-min), 970mbar(hPa)
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AUGUST 17, 2012TYPHOON IGME
On August 17, 2012, the 9th typhoon to enter the Philippine Area of
Responsibility was named as typhoon Igme. In less than a month we are
battered by 3 typhoons and weather disturbance Habagat. Hundred people
are dead and leaving thousands of families affected with floods and
devastated agricultural crops. Some families return to their homes from
evacuation center and other low lying areas are still flooded. Despite of goodweather condition in past few days, a new LPA (now already a typhoon) is
sighted 510 km North Northeast of Basco, Batanes as of 8pm August 28, 2012.
It enhanced the Southwest Monsoon or Habagat and brought
rains over western section of Southern Luzon which triggered flash floods and
landslide to prone areas.
Typhoon IGME Forecast Track
Coordinates: 25.3N, 123.6E
Signal #1: (30-60 kph): None
Signal #2: (61-100 kph): None
Forecast:
(1) 645 km North Northeast of Basco, BatanesWednesday
Strength: 110 kph near center
Gustiness: 140 kph
Typhoon (JMA)
Category 4 typhoon (SSHS)
Duration August 17August 30
Intensity 150 km/h (90 mph) (10-min),
950mbar(hPa)
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Movement: North Northeast at 22 kph
Rain Volume: 10-18mm/hr (Moderate to Heavy) within 500 km
Distance to Land: 510 km North Northeast of Basco, Batanes
AUGUST 19, 2012TYPHOON JULIAN
PAGASA Tracks New Typhoon JULIAN, the 10th typhoon to enter the
Philippine Area of Responsibility (PAR) last August 19, 2012. New Typhoon with
International name BOLAVEN was sighted by PAGASA 1550 km East of Northern
Luzon as of 11 am August 19, 2012.Because of the sustained winds and strength
of the typhoon, Fujiwara Effect happened between the previous typhoon Igme.
Typhoon JULIAN Forecast Track
Coordinates: 25.1N, 129.8E
Forecast Track:
(1) 830 km Northeast of Basco, Batanes (Outside of PAR) - Sunday Afternoon
Strength: 175 kph
Gustiness: 210 kph
Rain Volume: 10-35mm/hr (Moderate-Heavy) within 700 km.
Typhoon (JMA)
Category 4 typhoon (SSHS)
Duration August 19August 29
Intensity 185 km/h (115 mph) (10-min),
910mbar(hPa)
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Movement: Northwest at 15kph
Distance from Land: 850 km Northeast of Basco, Batanes as of 4am August 26,
2012
What is Fujiwhara Effect?
There are two typhoons inside Philippine Area of Responsibility as of today,
Typhoon JULIAN and IGME and a possible interaction will take effect as they
approach at distance of 1500 km between each other. This interaction is called
"Fujiwhara Effect" discovered by Sakuhei Fujiwhara - a Japanese Meteorologist
in 1921 Aand he determined that two storms will sometimes move around a
common center pivot point.
The interaction will rotate in a common center pivot point. One scenario of
Fujiwhara Effect is Typhoon IGME will make a u-turn while Typhoon JULIAN is
traversing Taiwan-Okinawa and the two will dance to each other or act like a
seesaw.
The Fujiwara Effect is an interesting phenomenon which can happen when two
or more hurricanes form very near each other. The National Weather Service
defines the Fujiwhara Effect as the tendency of two nearby tropical cyclones to
rotate cyclonically about each other. Another slightly more technical definitionof the Fujiwhara Effect from the National Weather Service is a binary interaction
where tropical cyclones within a certain distance (300-750 nautical miles
depending on the sizes of the cyclones) of each other begin to rotate about a
common midpoint. The effect is also known as the Fujiwara Effect without an h
in the name.
Fujiwharas studies indicate storms will rotate around a common center of mass.
A similar effect is seen in the rotation of the Earth and moon. This barycenter is
the center pivot point around which two rotating bodies in space will spin. The
specific location of this center of gravity is determined by the relative intensity of
the tropical storms. This interaction will sometimes lead to tropical storms
'dancing' with each other around the dance floor of the ocean.
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SEPTEMBER 10, 2012TYPHOON KAREN
PAGASA active Low Pressure Area (LPA), now a typhoon KAREN was sighted
660 km East of Itbayat, Batanes as of 10 am September 15, 2012 and the 11th
Typhoon that entered Philippine Area of Responsibility (PAR) this 2012.
KAREN, previously an active LPA was embedded along Inter-Tropical
Convergence Zone (ITCZ) affecting Southern Luzon, Visayas and Mindanao
which will experience cloudy skies with scattered rain showers and thunderstorm
which may trigger flash floods and landslides.
KAREN is expected to enhanced Southwest Monsoon or HABAGAT that will
bring rains over Luzon and Western Visayas. Fishing boats and small seacrafts are
advised not to venture out into the Eastern Seaboard of Central and Southern
Luzon.
PAGASA Typhoon KAREN Forecast Track
Coordinates: 22.7N, 128.9E
Signal #1: None
Typhoon (JMA)
Category 5 super typhoon (SSHS)
Duration September 10September 18
Intensity 205 km/h (125 mph) (10-min),
900mbar(hPa)
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Forecast Track:
(1) 70 km South of Okinawa JapanSunday
Strength: 185 kph near center
Gustiness: 220 kph
Movement Speed: North Northwest at 15 kph
Rain Volume: 15 - 30mm/hr (Heavy to Intense Rains) within 550 km.
Distance from Land: 660 km East of Itbayat, Batanes
SEPTEMBER 29, 2012TYPHOON LAWIN
Satellite image Storm track
Current storm status
Typhoon(JMA)
Current storm status
Category 2 typhoon (1-min mean)
As of: 08:45UTCSeptember 29
Location: 27.3N129.0E
Winds: 90 knots (165 km/h; 105 mph)
sustained (10-min mean)
90 knots (165 km/h; 105 mph)
sustained (1-min mean)gusting to 130 knots (240 km/h;
150 mph)
Pressure: 935hPa(27.61inHg)
Movement: NEat 15 knots (28 km/h; 17 mph)
http://en.wikipedia.org/wiki/Tropical_cyclone#Intensity_classificationshttp://en.wikipedia.org/wiki/Tropical_cyclone#Intensity_classificationshttp://en.wikipedia.org/wiki/Japan_Meteorological_Agencyhttp://en.wikipedia.org/wiki/Japan_Meteorological_Agencyhttp://en.wikipedia.org/wiki/Japan_Meteorological_Agencyhttp://en.wikipedia.org/wiki/Saffir-Simpson_Hurricane_Scalehttp://en.wikipedia.org/wiki/Saffir-Simpson_Hurricane_Scalehttp://en.wikipedia.org/wiki/Saffir-Simpson_Hurricane_Scalehttp://en.wikipedia.org/wiki/Coordinated_Universal_Timehttp://en.wikipedia.org/wiki/Coordinated_Universal_Timehttp://en.wikipedia.org/wiki/Coordinated_Universal_Timehttp://en.wikipedia.org/wiki/Latitudehttp://en.wikipedia.org/wiki/Longitudehttp://en.wikipedia.org/wiki/Longitudehttp://en.wikipedia.org/wiki/Longitudehttp://en.wikipedia.org/wiki/Pascal_(unit)http://en.wikipedia.org/wiki/Pascal_(unit)http://en.wikipedia.org/wiki/Pascal_(unit)http://en.wikipedia.org/wiki/Inch_of_mercuryhttp://en.wikipedia.org/wiki/Inch_of_mercuryhttp://en.wikipedia.org/wiki/Inch_of_mercuryhttp://en.wikipedia.org/wiki/Northeasthttp://en.wikipedia.org/wiki/Northeasthttp://en.wikipedia.org/wiki/File:Jelawat_2012_track.pnghttp://en.wikipedia.org/wiki/File:Jelawat_Sept_29_2012_0450Z.jpghttp://en.wikipedia.org/wiki/File:Jelawat_2012_track.pnghttp://en.wikipedia.org/wiki/File:Jelawat_Sept_29_2012_0450Z.jpghttp://en.wikipedia.org/wiki/Northeasthttp://en.wikipedia.org/wiki/Inch_of_mercuryhttp://en.wikipedia.org/wiki/Pascal_(unit)http://en.wikipedia.org/wiki/Longitudehttp://en.wikipedia.org/wiki/Latitudehttp://en.wikipedia.org/wiki/Coordinated_Universal_Timehttp://en.wikipedia.org/wiki/Saffir-Simpson_Hurricane_Scalehttp://en.wikipedia.org/wiki/Japan_Meteorological_Agencyhttp://en.wikipedia.org/wiki/Tropical_cyclone#Intensity_classifications -
7/29/2019 Astronomical Events 2012
19/19
PAGASA Tracks New Typhoon named Lawin, the 11th typhoon to enter
the Philippine Area of Responsibility (PAR) last September 29, 2012.
PAGASA sighted LAWIN 480 km Northeast of Itbayat, Batanes 10pm September 28,
2012, the 12th typhoon to enter the Philippine Area of Responsibility (PAR) for this
year.
LAWIN was previously an active LPA and developed into Tropical Depression
(PAGASA technical term) 8 days ago.
A total of four typhoons visited our country last year for the month of September
alone. In September 24, 2011 and 2009, typhoon PEDRING and Ondoy make a
landfall in our country and there is similarity in typhoon tracks.
PAGASA Typhoon LAWIN Forecast Track
Coordinates: 24..5N, 125.2E
Signal #3 (101-185kph winds): None
Signal #2 (61-100kph winds): None
Signal #1 (30-60kph winds): None
Forecast Track:
(1)Out of Philippine Area of Responsibility (PAR)SaturdayStrength: 175 kph near the center
Gustiness: 210 kph
Movement: Northeast at 17 kph
Rain Volume: 10-20mm/hr (Heavy to Intense) within 750km
Distance to Land: 480 km Northeast of Itbayat, Batanes