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Dust Plume Off Cape Monze, Pakistan

24.8N 67.0E

December 28th, 2012 Category: Dust Storms

India and Pakistan – December 25th, 2012

Haze, possibly a combination of smoke from agricultural fires in northern India as well as dust, hangs over the Indus River Valley in Pakistan. In the lower left corner, what appears to be a plume of dust blows southwestward off Cape Monze (also known as Cape Mount), near Karachi, and over the Arabian Sea.

Topography Near Karachi, Pakistan

24.8N 67.0E

February 23rd, 2012 Category: Rivers

Pakistan - February 9th, 2012

This wide-swath ASAR image shows the lower part of the Indus River valley, in Pakistan. Visible by the bottom left corner is Karachi, the largest city, main seaport and the main financial centre of Pakistan, as well as the capital of the province of Sindh. The city has an estimated population of 13 to 15 million, while the total metropolitan area has a population of over 18 million. Karachi is the most populous city in the country, one of the world’s largest cities in terms of population and also the 10th largest urban agglomeration in the world.

The city is located in the south of the country, along the coastline meeting the Arabian Sea. It is spread over 3,527 km2 (1,362 sq mi) in area. Most of the land consisted largely of flat or rolling plains, with hills to the west and mangroves and creeks of the Indus delta toward the southeast side of the city. The Khasa Hills lie in the northwest and form the border between North Nazimabad Town and Orangi Town. The Manghopir mountain range lies northwest of Karachi, between Hub River and Manghopir.

Kirthar Mountains Extending to Arabian Sea, Pakistan

24.8N 67.0E

October 16th, 2011 Category: Mountains

Pakistan - October 5th, 2011

This orthorectified image shows the Kirthar Mountains, located in the Balochistan and Sindh provinces of Pakistan. The range extends southward for about 190 miles (300 km) from the Mula River in east-central Balochistan to Cape Monze (Muari) west of Karachi on the Arabian Sea. Karachi can be observed in the lower left quadrant as a bright white area by the shores of the Arabian Sea.

The Kirthar Range forms the boundary between the Lower Indus Plain (east) and southern Balochistan (west). It consists of a series of parallel rock hill ridges rising from 4,000 feet (1,200 m) in the south to nearly 8,000 feet (2,500 m) in the north.

Kirthar has a simple mountain structure of the regular anticlinal type, with the arches steepest towards the north and the west and gently dipping towards the south and the valley of the Indus.

The maximum elevation in the Sindh Segment of Kirthar Mountains was reported in April 2009 as 7,056 feet above sea-level, which would make it the highest peak of Sindh, situated a few miles north-west of the upcoming Gorakh Hill Station which is at 5,688 feet.

The next highest Peak of Sindh is a 6880 feet high peak, known locally as Kutte-ji-Kabar (Dog’s Tomb). There are also a number of other peaks in the Sindh segment of Kirthar Mountains exceeding 5,500 feet; these all receive occasional snowfall during the winter rains.

Tropical Cyclone Three South-Southwest of Karachi, Pakistan

13.9N 54.8E

June 1st, 2010 Category: Tropical Storms

Tropical Storm Three (03A) - May 31st, 2010

Tropical Storm Three (03A) - May 31st, 2010

Enhanced image

Enhanced image

Track of TC 03A - March 31st, 2010 © Univ. of Wisconsin

Track of TC 03A

Tropical Cyclone Three (TC03A), located approximately 570 nm south-southwest of Karachi, Pakistan, has tracked north-northwestward at 4 knots over the past six hours.

Animated infrared satellite imagery indicates that TC03A has continued to consolidate with improved convective banding and central convection despite light to moderate, easterly vertical wind shear (VWS).

A NOAA-18 89 ghz image depicts multiple convective bands over the western semi-circle with the center positioned on the northeastern edge of a deep convective burst. There is fair confidence in the current position based on this image.

TC 03A is forecast to intensify at a 10-15 knot per day rate but will weaken rapidly after making landfall near TAU 96 and will dissipate by TAU 120. Maximum significant wave height is 17 feet.

The current intensity is assessed at 35 knots and is based on Dvorak estimates of 35 knots. Recent buoy observations near the center also support a strengthening system. A buoy 110 nm south-southeast indicated SLP near 1002.2 mb and SST of 30C, and a buoy 110 nm north indicated SLP near 1000.0 mb and SST near 31C.

The LLCC is located within a generally favorable environment under an upper-level anticyclone with good outflow aloft. As indicated on the total precipitable water product, the system has a deep moisture envelope. VWS has decreased slightly over the past 12 hours and is expected to decrease further within the next 12-24 hours.

TC 03A is tracking slowly along the western periphery of the low- to mid-level subtropical ridge (STR), which is centered over western, central India. The system is expected to track slowly northward but should accelerate by TAU 48 as the STR builds.

By TAU 72, TC 03A should turn northeastward and accelerate as the system crests the STR axis and moves under the influence of a deepening midlatitude shortwave trough. The majority of the model guidance supports this track with the exception of WBAR, which shows a slow westward track.

Both the GFS and GFDN display erroneous tracks through TAU 48 but come into better agreement in the extended TAUs. The GFS 500 mb heights and vorticity indicate two vorticity maxima rotating cyclonically within an elongated circulation. This error accounts for the erroneous north-northwestward track through TAU 48.

The GFDN indicates an unrealistic eastward track into the steering ridge through TAU 24. Since these errors appear to offset each other, this forecast is close to but faster than the consensus. The ECMWF solution supports the current forecast and is close to the model consensus.

Dust Over Indus River Valley and Off Coast of Pakistan

24.8N 67.0E

November 7th, 2009 Category: Dust Storms, Rivers

Dust off Coast of Pakistan - November 5th, 2009

Dust off Coast of Pakistan - November 5th, 2009

Dust blows over the Indus River Valley, over Karachi, Pakistan’s largest city, and off the coast into the Indian Ocean. The dust blows towards, but doesn’t reach, the country of Oman on the lower left.

The mountains west of the Indus River, which still appears greenish through the veil of dust, prevent the particles from spreading westward, over the Iranian Plateau and into Iran.

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