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Haiyan (Northwestern Pacific Ocean) November 20, 2013

Evidence of Destruction in Tacloban, Philippines

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The ASTER instrument aboard NASAs Terra satellite acquired this image of the island of Leyte, Philippines on Nov. 15, 2013.

Image Credit: NASA/USGS EROS/Ken Duda

Larger image
http://eoimages.gsfc.nasa.gov/images/imagerecords/82000/82420/Tacloban_ast_2013319_lrg.jpghttp://www.nasa.gov/mission_pages/hurricanes/missions/index.htmlhttp://www.nasa.gov/mission_pages/hurricanes/main/index.htmlhttp://www.nasa.gov/missions/index.htmlhttp://www.nasa.gov/mission_pages/hurricanes/archives/index.htmlhttp://www.nasa.gov/mission_pages/hurricanes/bios/index.htmlhttp://www.nasa.gov/mission_pages/hurricanes/features/index.htmlhttp://www.nasa.gov/mission_pages/hurricanes/multimedia/index.htmlhttp://www.nasa.gov/mission_pages/hurricanes/news/index.htmlhttp://www.addthis.com/bookmark.php?v=300&winname=addthis&pub=unknown&source=tbx32-300&lng=en-US&s=google_plusone_share&url=http%3A%2F%2Fwww.nasa.gov%2Fcontent%2Fgoddard%2Fhaiyan-northwestern-pacific-ocean&title=Haiyan%20(Northwestern%20Pacific%20Ocean)%20%7C%20NASA&ate=AT-unknown/-/-/52f121bbb701a02c/2&frommenu=1&uid=52f121bb380a8b07&ct=1&pre=https%3A%2F%2Fwww.google.com.ph%2F&tt=0&captcha_provider=nucaptchahttp://www.nasa.gov/about/index.htmlhttp://www.nasa.gov/connect/index.htmlhttp://www.nasa.gov/multimedia/index.htmlhttp://www.nasa.gov/missions/index.htmlhttp://www.nasa.gov/news/index.htmlhttp://www.nasa.gov/http://www.addthis.com/bookmark.php?v=300&pubid=ra-addthisforsharehttp://www.nasa.gov/news/media/info/index.htmlhttp://www.nasa.gov/audience/forstudentshttp://www.nasa.gov/audience/foreducatorshttp://www.nasa.gov/


2/15



When Super Typhoon Haiyanstruck the Philippines on November 8, 2013,it pounded the is land of Leyte with winds near 315

kilometers (195 miles ) per hour and a tremendous storm s urge. In Tacloban, winds blew a wall of water ashore that may have

been as much as 7.5 meters (24.6 feet) high.Much of the city sits less than 5 meters (16 feet) above sea level. These false-

color images hint at the impact of the storm surge and winds on the city.

The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASAs Terrasatellite acquired these

images on November 15, 2013 (top) and April 3, 2004 (lower)the last mostly cloud-free ASTER view of the city. Plant-covered

land is red; urban areas are white and silver; bare ground is tan; and water and shadows are black. From ASTERs wide

perspective, it is not possible to see individual city blocks of des troyed buildings. But the subtle differences between the images

do reveal a wide-scale disas ter.

The most obvious difference is a change in vegetation. In 2004, the mountains west of the city were covered in dense vegetation

in 2013, the hills are bare. Nine years elapsed between the two im ages, and m any things could explain the change. People may

have cleared the land, or the plants may simply look different in November than they do in April. Since this is a tropical location

where seasons have little impact, it is jus t as likely that Haiyans winds are responsible for the change. News photosof the hills

show trees s tripped of leaves or blown down.

Near the coast, the storms impact is more unequivocal. Much of the area south of Tacloban is tan where the storm surge

washed away plants and buildings , leaving mud-covered ground. This is the clearest evidence of the storm surge. The sm all

peninsula where Taclobans airport is located was one of the most severely affectedparts of the city, and a close look at the

image s hows that this area is als o brown, which means that few plants or buildings survived. Interestingly, the large geometric

white shape near the airport is new compared to another satellite-based m apfrom July 2013. The shape indicates that this is a

man-made structure, perhap associated with relief efforts at the airport.

Changes to the city itself are subtle. At first glance, it appears that Tacloban grew between 2004 and 2013. The city appears

more densely built, and it expanded along the outer edges. However, some of this growth may be an illusion. More recent views

from other satellites, including the Google Maps viewshow a neatly ordered city with green space separating city blocks, much

The ASTER instrument aboard NASAs Terra satellite acquired this image of the island of Leyte, Philippines on April 3, 2004.

Image Credit: NASA/USGS EROS/Ken Duda

Larger image
http://eoimages.gsfc.nasa.gov/images/imagerecords/82000/82420/Tacloban_ast_2004094_lrg.jpghttps://www.google.com/maps/preview#%21q=Tacloban+City%2C+Eastern+Visayas%2C+Philippines&data=%212m1%211e3%214m15%212m14%211m13%211s0x33087727ff2f99dd%3A0xc3fb64480f0c8751%213m8%211m3%211d21027%212d-76.851443%213d38.9983645%213m2%211i1290%212i651%214f13.1%214m2%213d11.25%214d125&fid=7http://reliefweb.int/sites/reliefweb.int/files/resources/EMSR058_02TACLOBANCITY_REFERENCE_OVERVIEW_v2_300dpi.pdfhttp://www.bbc.co.uk/news/world-asia-24891456http://www.nytimes.com/interactive/2013/11/11/world/asia/typhoon-haiyan-photos.html?ref=asiahttp://terra.nasa.gov/http://asterweb.jpl.nasa.gov/http://stormsurge2010.blogspot.com/2013/11/haiyan-storm-surge-estimates-improve.htmlhttp://earthobservatory.nasa.gov/NaturalHazards/view.php?id=82348http://earthobservatory.nasa.gov/NaturalHazards/event.php?id=82342


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like the 2004 image. In 2013, that plant-covered land is gone, replaced by silver. The ordered grid of streets, visible in 2004, is

blurred in 2013, perhaps covered by a field of debris. A radar-based satellite analysis by scientists at the Jet Propulsion

Laboratory confirms wides pread destruction in downtown Tacloban.

The final signs of s torm damage are the pockets of water on the landscape. In this type of false-color image, water is black or

dark blue. Traces of floods are visible south of Tacloban and west of the hills on the left edge of the image. Some of the dark

spots are shadows cast by clouds.

This pair of images demonstrates both the challenge and the value in mapping disas ters with satellite data. The images give a

view of the entire city and its surroundings, a view that would otherwise be very difficult to obtain. On the other hand, some of the

change is ambiguous and requires ground-based information to understand. For more tips on interpreting satellite images, s ee

the Earth Observatorys new feature, How to interpret a satellite image: Five tips and strategies.

References:

1. Associated Press (2013, November 11) Haiyan storm surges caught Philippines by surprise.Accessed November 19,

2013.

2. BBC News (2013, November 12) Tacloban: City at the center of the storm.Accessed November 19, 2013.

3. BBC News (2013, November 12) Typhoon Haiyan: Storm surge destroys hous e in s econds.Accessed November 19,

2013.

4. Dutch Water Sector (2013, November 12) Typhoon Haiyan pushed devastating 5 m high storm surge into Tacloban City,

Philippines.Accessed November 19, 2013.

5. European Comm ission Copernicus Emergency Management Service (2013, November 11) Tacloban City Philippines

Typhoon Haiyan 08/11/2013 grading map overview.Published on ReliefWeb.Accessed November 19, 2013.

6. Hurricane Hals Storm Surge Blog (2013, November 15) Haiyan storm surge es timates improve through shared

observations.Accessed November 19, 2013.

7. NASA Jet Propulsion Laboratory (2013, November 13) NASA-generated damage map to assist with Typhoon Haiyan

disaster response.Accessed November 19, 2013.

8. New York Times (2013, November 16) In worst-hit area of Tacloban, a killer from two s ides.Accessed November 19,

2013.

9. New York Times (2013, November 11) Mapping the destruction of Typhoon Haiyan.Accessed November 19, 2013.

10. New York Times (2013, November 11) Pictures of Typhoon Haiyans wrath.Accessed November 19, 2013.

11. UN Office for the Coordination of Humanitarian Affairs (2013, November 18) Philippines: Typhoon Haiyan (Yolanda)

infrastructure Tacloban City (as of 15-Nov-2013).Published on ReliefWeb.Accessed November 19, 2013.

NASA image courtesy Ken Duda, U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center.

Caption by Holli Riebeek.

Instrument: Terra - ASTER

Nov. 14, 2013 - Haiyan and Tropical Storm 30W Bring Heavy Rains to the Phillipines

Haiyan, known locally in the Philippines as Yulonda, will go down as a historic

storm, making landfall in the central Philippines as perhaps the most powerful

tropical cyclone to ever make landfall with sustained winds estimated at 195

mph (~315 kph). So far, over 2300 people are confirmed to have been killed by

the storm, and the number is likely to climb higher with many still missing and

not all areas unaccounted for. Katrina, which devasted the US Gulf coast in

2005, was respons ible for 1833 fatalities.
http://eros.usgs.gov/usahttp://reliefweb.int/disaster/tc-2013-000139-phlhttp://reliefweb.int/map/philippines/philippines-typhoon-haiyan-yolanda-infrastructure-tacloban-city-15-nov-2013http://www.nytimes.com/interactive/2013/11/11/world/asia/typhoon-haiyan-photos.html?ref=asiahttp://www.nytimes.com/interactive/2013/11/11/world/asia/typhoon-haiyan-map.html?_r=0http://www.nytimes.com/2013/11/17/world/asia/tacloban-philippines-typhoon-haiyan.htmlhttp://www.jpl.nasa.gov/spaceimages/details.php?id=PIA17687http://stormsurge2010.blogspot.com/2013/11/haiyan-storm-surge-estimates-improve.htmlhttp://reliefweb.int/disaster/tc-2013-000139-phlhttp://reliefweb.int/map/philippines/tacloban-city-philippines-typhoon-haiyan-08112013-grading-map-overview-0http://www.dutchwatersector.com/news-events/news/8391-typhoon-haiyan-pushed-devastating-5-m-high-storm-surge-into-tacloban-city-philippines.htmlhttp://www.bbc.co.uk/news/world-asia-24985592http://www.bbc.co.uk/news/world-asia-24891456http://abcnews.go.com/International/wireStory/haiyan-storm-surges-caught-philippines-surprise-20848523?singlePage=truehttp://earthobservatory.nasa.gov/Features/ColorImage/http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA17687


4/15



The most deadly flooding from Super Typhoon Haiyan was caused by the storm

surge, which was reported to be up to 5.2 meters (~17 feet) in Tacloban, located

on the northeast tip of Leyte, where the strong cyclonic winds from Haiyan

funneled water into the northwest corner of Leyte Gulf between the islands of

Leyte and Samar.

In addition to the fierce winds and powerful surge, Haiyan brought copious

amounts of rainfall to the central Philippines along with Tropical Storm Thirty

and another tropical disturbance (90w), which all pas sed through the the central

Philippines within in the past ten days. The combined rainfall from these

tropical cyclones (first image to the right) in the TRMM-based, near-real time

Multi-satellite Precipitation data (TMPA) analysis shown above during the period

from November 2-12, 2013. It shows that mos t of the island of Leyte had rainfall

totals greater than 500mm (~19.7 inches, dark red) with a peak amount of over

685 mm (~27 inches, lighter purple) located over the southeast corner of the

island.

Peak and average rainfall over the central Philippines (second image to the

right) shows that despite being far less intense, Tropical Storm Thirty, which

preceded Super Typhoon Haiyan by about three days, produced similar peak

rain intensities (shown in red) and over a s imilar duration, but less average

rainfall (shown in blue) than Haiyan.

TRMM is a joint mission between NASA and the Japanese space agency JAXA.

Text credit: Hal Pierce/Steve Lang SSAI/NASA GSFC

NASA's Goddard Space Flight Center

Nov. 13, 2013 - NASA-Generated Damage Map To Assist With Typhoon Haiyan

Disaster Response

When Super Typhoon Haiyan, one of the most powerful storms ever recorded on Earth, struck the Philippines Nov. 8, 2013, it

The combined rainfall f rom these tropical

cyc lones is show n in this image during the

period from November 2-12, 2013.

Image Credit: Hal Pierce, SSAI/NASA

GSFC

Peak and average rainfall over the central

Philippines show s that despite being far less

intense, Tropical Storm Thirty, w hich preceded

Super Typhoon Haiyan by about three days,

produced similar peak rain intensities (red) and

over a similar duration, but less average

rainfall (blue) than Haiyan.

Image Credit: Hal Pierce, SSAI/NASA

GSFC
http://www.nasa.gov/goddard


5/15


6/15

On Nov. 11 at 05:45 UTC, the MODIS

instrument aboard NASA's Aqua satellite

captured this image of Tropical Storm Haiyan

over mainland China.

Image Credit: NASA Goddar d M ODIS

Rapid Response Team


7/15



Animated enhanced in frared satell ite imagery showed the storm was

weakening quickly while over land and that bulk of the thunderstorms (and

convection) had been pushed north of the center as a res ult of increasing winds

shear from the southwest. On Nov. 11 at 05:45 UTC, the Moderate Resolution

Imaging Spectroradiometer or MODIS instrument aboard NASA's Aqua satellite

captured an image of Tropical Storm Haiyan over mainland China. The MODIS

image showed the extent of cloud cover from northeastern Vietnam over the

Guangxi, Guangdong, Hunan, Guizhou, Sichuan, Chongqing, Hubei, Shaanxi,

Henan, Anhui and Jaingxi provinces.

Mid-latitude westerly winds moving over China helped weaken the storm.

Haiyan is forecast to turn to the east and dissipate in the next day.

Text credit: Rob Gutro


UPDATE#1 - Nov. 12, 2013

On Nov. 10 at 03:30 UTC/Nov. 9 at 10:30 p.m.

EDT, the MODIS instrument aboard NASA's

Terra satellite showed the center of Typhoon

Haiyan just south of Hainan Island, China in the

South China Sea.


Rapid Response Team


8/15



Typhoon Haiyan Pounding Hainan Island, China

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAs Terra satellite captured this image of Typhoon Haiyan

just south of Hainan Island, China and approaching Vietnam on November 10, 2013. The storm was tracking northwest and

slowly weakening prior to landfall in northern Vietnam on Sunday evening (Monday morning, local time). As of early Sunday

morning, the storm had m aximum sus tained winds of about 90 miles (145 kilometers) per hour, the equivalent of a category 1

storm. Haiyan crossed the Philippines as a Super-Typhoon and headed for Indochina in early November 2013.

Image Credit: Jeff Schmaltz, NASA Goddard/LANCE/EOSDIS MODIS Rapid Res ponse Team/Caption by Adam Voiland

Nov. 08, 2013 - Update #2 - NASA's TRMM Satellite Sees Super-typhoon Haiyan Strike Philippines

Super-typhoon Haiyan, equivalent to a Category 5 hurricane on the U.S. Saffir-

Simpson scale, struck the central Philippines m unicipality of Guiuan at the

southern tip of the province of Eastern Samar early Friday morning at 20:45 UTC

(4:45 am local time). NASA's TRMM satellite captured visible, microwave and

infrared data on the storm.

Haiyan made landfall as an extremely powerful super typhoon, perhaps the

strongest ever recorded at landfall, with sus tained winds estimated at 195 m ph

Typhoon Haiyan pounding Hainan Island, China.

Image Credit: Jeff Schmaltz NASA Goddar d/LANCE/EOSDIS MODIS Rapi d Response


9/15

TRMM saw Haiyan's center w as less

organized after having passed over the larger

Philippines is land of Panay, although a large


10/15



Update #1 - Nov. 08, 2013 - NASA Sees Super-Typhoon Haiyan Maintain

Strength Crossing Philippines

Super-Typhoon Haiyan slammed into the eas tern Philippines as the strongest

tropical cyclone of the year, and today, Nov. 8, is exiting the country and moving

into the South China Sea. NASA's Aqua satellite captured visible and infrared

data of Hiayan after it made landfall near Leyete, identifying the extent of its

power.

The U.S. Navy's Joint Typhoon Warning Center noted that jus t before Super-

Typhoon Haiyan made landfall its m aximum sus tained winds were 314 kph/195

mph, with gusts up to 379 kph/235 mph. PAGASA, the Philippines Weather

organization noted that Hiayan's m aximum sus tained winds at landfall were

near 234 kph/145 mph.

On Nov. 7 at 2100 UTC/4 p.m. EDT/Nov. 8 at 5 a.m. Philippines local time,

Super-Typhoon Haiyan had maximum sustained winds near 170 knots/ 195.6

mph/314.8 kph. It was located about 543 nautical miles east-southeast of

Manila at that time.

As Super-Typhoon Haiyan moved over the central Philippines on Nov. 8 at 05:10

UTC/12:10 a.m. EDT, the Moderate Resolution Imaging Spectroradiometer or

MODIS instrument aboard NASA's Aqua satellite captured a visible image. The

image s howed that Haiyan maintained its structure as it m oved over the east

central Philippines. As the center moved through the eastern Visayas, large, thick bands of thunderstorms spiraled into the

center from the northeast. Hiayan's clouds extended over the entire country from the Cagayan Valley in the north to the

Soccsksargen region in the south.

The AIRS instrument that also flies aboard NASA's Aqua satellite captured infrared imagery of Super-Typhoon Haiyan exiting the

western Philippines. The coldest cloud top temperaetures and mos t powerful thunderstorms with heavy rainfall potential

covered the Visayas, Bicol, National Capital, Central Luzon, Calabarzon, Northern Mindanao, and Mimaropa regions.

By Nov. 8 at 0900 UTC/4 a.m. EDT/5 p.m. Philippines local time, Haiyan's maximum sustained winds dropped to 145 knots/167

mph/268.5 kph, still making it a powerful Category 5 tropical cyclone on the Saffir-Simpson Scale. It was moving through

Western Visayas and was 214 nautical miles south-southeast of Manila. It is moving quickly to the west at 22 knots/25.3

mph/40.74 kph, which will reduce flooding potential.

Many warnings are s till in effect today, Nov. 8, as Hiayan continues to exit the

western Philippines.

Public storm warning s ignals have been raised in large areas of the country. In

Luzon, Signal #1 was in effect for: Metro Manila, Bataan, Cavite, Rizal, Laguna,

Quezon, Camarines provinces, Albay, Sorsogon. Signal #2 is in effect for:

Lubang Island, Batangas, Marinduque, rest of Palawan, Burias Island, Masbate

and Ticao Island; Signal #3 in effect for the rest of Mindoro provinces, Romblon,

area of heavy rain (show n in ed) is now

located just south of the center. Haiyan w as

estimated to be 145 knots (~167 mph), still

equivalent to a Category 5 hurricane.

Image Credit: NASA/SSAI, Hal Pierce

As Super-Typhoon Haiyan moved over the

central Philippines on Nov. 8 at 05:10

UTC/12:10 a.m. EDT, the MODIS instrument

aboard NASA's Aqua satellite captured this

visible image.


Rapid Response Team

The AIRS instrument aboard NASA's Aqua


11/15



rest of northern Palawan including Puerto Princesa City; and Signal #4 is in

effect for: extreme northern Palawan, Calamian Group of Islands, southern

Occidental and Oriental Mindoro.

In Visayas, Signal #1 remained in effect for: Samar provinces, Leyte provinces,

Camotes is land, Bohol and Siquijor; while Signal #2 is up for: Negros

provinces, Cebu, Biliran Island; and there is no Signal #3, but there is a Signal

#4 for Aklan, Capiz, Antique, Iloilo and Guimaras.

In Mindanao, a Signal #1 remained in effect for the Camiguin, Surigao del Norte, Dinagat; and a Signal #2 is up for: Siargao.

According to PAGASA, the Philippine authority on meteoro logy, flashfloods and mudslides are poss ible in areas under s ignal

#2, 3 and 4. In addition, storm surges of up to 21 feet/~7 meters are pos sible under a Signal #2.

CNN reported on Nov. 9 that Hiayan left power outages, flooded streets, downed trees, damaged buildings and many canceled

flights.

The U.S. Navy's Joint Typhoon Warning Center in Hawaii said it was the strongest tropical cyclone in the world this year.

Hiayan is forecast to move through the South China Sea and make a final landfall as a strong typhoon in central Vietnam in a

couple of days.



Nov. 07, 2013 - NASA Satellites See Super-Typhoon Haiyan Lashing the Philippines

Super-Typhoon Haiyan was lashing the central and southern Philippines on

Nov. 7 bringing maximum sustained winds of a Category 5 hurricane. NASA is

providing visible, infrared and microwave satellite data to forecasters and

warnings are in effect for the Philippines and Micronesia as Haiyan moves wes t.

Brian McNoldy, a Senior Research Associate at the University of Miami's

Rosenstiel School of Marine and Atmospheric Science in Miami, Fla. noted that

on the morning (EST) of Nov. 7, "Haiyan has achieved tropical cyclone

perfection. It is now estimated at 165kts (190mph), with an 8.0 on the Dvorak

scale... the highest poss ible value."

Warnings in the Philippines have been raise throughout much of the country. In

Luzon:

Signal #1 is in effect for : Camarines Norte & Sur, Catanduanes, Mindoro

Provinces, Marinduque, Northern Palawan, Calamian Group of Islands, and

Southern Quezon.

Signal #2 is in effect for: Romblon, Sorsogon, Albay, Ticao and Burias island.

In Visayas, Signal #1 is in effect for Squijor, and Signal #2 is in effect for: Bohol,

Negros Occidental and Oriental, Aklan, Capiz, Antique, rest of Cebu, Iloilo and

Guimara. Signal #3 is in effect for: Northern Samar, Masbate, northern Cebu,

Cebu City and Bantayan island, and Signal #4 is in effect for: Eastern Samar,

Samar, Leyte, Southern Leyte and Biliran island.

In Mindanao, Signal #1 was posted for: Misamis Oriental, Agusan del Sur;

satellite captured this infrared, false-colored

image of Super-Typhoon Haiyan exiting the

w estern Philippines on Nov. 8 at 04:59 UTC.

Purple indicates coldest, most pow erful

thunderstorms with heavy rainfall potential.

Image Credit: NASA JPL/Ed Olsen

This visible image of Super Typhoon Haiyan

approaching the Philippines w as taken from

the MODIS instrument aboard NASA's Aqua

satellite on Nov. 7, 2013 at 04:25 UTC/Nov. 6 at

11:25 p.m. EDT.


Rapid Response Team


12/15

NASA AIRS infrared data showed cloud top

temperatures as cold as 210 degrees

kelvin/-81.67F/-63.15C/ in the thick band of

thunderstorms around the center. Those cold

temperatures indicate very high, pow erful

thunderstorms w ith very heavy rain potential.

Image Credit: NASA/JPL, Ed Olsen


13/15


14/15



now closing in on Yap and Palau with a forecast to move through the central

Philippines, so all of those areas are under warnings and watches.

NASA's Tropical Rainfall Measuring Mission satellite known as TRMM passed

over Typhoon Haiyan on Nov. 4 at 1042 UTC/5:42 a .m. EDT. TRMM's

Precipitation Radar instrument provided data on rainfall in the storm's

northeastern quadrant. Rainfall near the center appeared to be falling at a rate

of between 50 and 60 mm /1.9 and 2.3 inches per hour. Rainfall outside the

center was falling between 10 and 30 mm /0.39 and 1.18 inches per hour.

TRMM also saw that some of the thunderstorms were reaching heights over 10

km/6.2 miles high.

On Nov. 5 at 1500 UTC, Haiyan's maximum sus tained winds increased to 90

knots/103.6 mph/166.7 kph, and are forecast to increase more over the next

several days. Haiyan is centered near 6.9 north and 142.3 east, about 333

nautical miles/ 383.2 m iles/616 km east-southeast of Yap. The typhoon is

moving to the west-northwest at 15 knots/ 17.2 mph/27.7 kph.

A Typhoon Warning is in effect for Kayangel in the Republic of Palau and Ngulu in Yap State, and a Typhoon Watch is in effect fo

Fais, Ulithi, in Yap State. In addition, a Tropical Storm Warning remains in effect for Yap Island in Yap State and Koror in Palau.

Forecasters at the Joint Typhoon Warning Center or JTWC who provide the bulletins and forecasts on the storm noted on Nov. 5

that animated enhanced infrared satellite imagery showed the Haiyan was intensifying quickly and bands of thunderstorms

wrapping into the center were strengthening. There was a strong band of thunderstorms wrapping around the western sem i-

circle and into an eye detected by microwave satellite data.

JTWC expects the storm to intensify rapidly over the next two to three days as it moves through the Philippine Sea.



Nov. 04, 2013 - NASA Sees Strengthening Tropical Storm Haiyan Lashing Micronesia

NASA's Aqua satellite passed over Tropical Storm Haiyan on Nov. 4 and infrared

data showed a large area of powerful thunderstorms affecting Micronesia. The

Joint Typhoon Warning Center has forecast newborn Tropical Storm Haiyan to

strengthen to a powerful typhoon before making landfall in the Philippines on

Nov 8.

In its orbit around the Earth, NASA's Aqua satellite passed over Tropical Storm

Haiyan on Nov. 4 at 0347 UTC/10:47 p.m . EDT on Nov. 3. The Atmospheric

Infrared Sounder or AIRS instrument captured infrared data that measured

cloud top temperatures in the strengthening tropical storm. AIRS data showed a

large area of strong convection with high, cold cloud tops. Temperatures

exceeded -63F/-52C over a large area. Satellite data shows that the convection,

the rising air that forms the thunderstorms that make up the tropical cyclone,

have deepened, or strengthened over the previous 24 hours.

Microwave imagery from NASA's Tropical Rainfall Measuring Mission or TRMM satellite shows improved banding of

thunderstorms wrapping around the tropical storm today, Nov. 5.

On Nov. 4, NASA's TRMM satellite found

precipitation falling at a rate of about 50 and 60

mm/1.9 and 2.3 inches per hour near Typhoon

Haiyan's center and betw een 10 and 30

mm/0.39 and 1.18 inches per hour outside the

center.

Image Credit: NASA/SSAI, Hal Pierce

NASA's Aqua satellite passed over Tropical

Storm Haiyan on Nov. 4 at 0347 UTC/10:47

p.m. EDT on Nov. 3 as it w as lashing the

islands that make up Micronesia in the w estern

North Pacific Ocean.

Image Credit: NASA JPL, Ed Olsen


15/15


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Haiyan is lashing the islands of Micronesia and warnings and watches are in effect today, Nov. 5.

Micronesia consis ts of a group of islands in the western Pacific Ocean that include the Marshall Islands , the Gilbert Islands

including Kiribati, the Caroline Islands, Nauru, Wake Island and the Mariana Islands. The area contains thousands of small

islands and is part of the larger Oceana.

A Typhoon Warning is in effect for Woleai in Yap State. A Typhoon Watch is in effect for Koror and Kayangel, Republ ic of Palau;

for Satawal in Yap State; and for Faraulep, Fais, Ulithi, Yap Island and Ngulu in Yap State. A Tropical Storm Warning has been

posted for Puluwat in Chuuk State as well as for Satawal in Yap State, and a tropical storm Watch is up for Ulul and Fananu in

Chuuk State.

On Nov. 5 at 1500 UTC/10 a.m. EDT Haiyan's maximum sustained winds were near 45 knots/51.7 mph/83.3 kph and it is

moving through an area of warm waters and low wind shear which is expected to help the storm strengthen. Haiyan was

centered near 6.2 north and 147.6 east about 640 nautical miles east-southeast of Yap. Haiyan is moving to the west at 19

knots/21.8 mph/35.9 kph.

Haiyan is moving west-northwest through Micronesia. It is expected to pass between Yap and Palau on Nov. 6 before making

landfall in the central Philippines. The Joint Typhoon Warning Center expects Haiyan to intensify to 120 knots/138.1 mph/222.2

kph as it approaches the central Philippines on Nov. 8. That strength is equal to a Category 4 hurricane on the Saffir-Simpson

Scale.


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haiyan (northwestern pacific ocean) _ nasa

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