Text Box: Government of Pakistan
PAKISTAN METEOROLOGICAL DEPARTMENT
Climate Data Processing Centre

 

 

Pakistan’s Monsoon 2011 (July & August)

During the first two months of monsoon season (July & August), anomalous behavior of precipitation has been observed over Pakistan. Over the national scale, in July, slightly below normal (-18%) rain was recorded but highly above normal (+59%) precipitation occurred during the month of August. Rainfall deviation from normal (1961-1990) during July over the provinces, Khyber-Pakhtonkhwa and Punjab was minimal whereas, Balochistan & Sindh were largely in deficit  i.e. -36% & -72%, respectively.  The monsoon activity was intensified during August over the country, especially south eastern parts, where monthly rainfall was +270% above normal in the province of Sindh. The August rainfall was almost normal over Khyber-Pakhtonkhwa (+9%) and slightly above normal over Punjab (+17%) & Balochistan (+22%).

 

RAINFALL (Percentage Departure)

Region

July

August

Pakistan

-17.7

58.9

Khyber-PK

0.8

8.8

Punjab

1.2

16.6

Balochistan

-36.2

21.6

Sindh

-72.1

271.4

In Pakistan the monsoon period is taken from July to September. The month wise percentage contribution to monsoon rainfall has been found to be generally 45, 40 & 15 during July, August & September respectively. The August monsoon rainfall, over province of Sindh (271 % above normal) is the heaviest recorded during the period 1961-2011. It may be recalled, that the monsoon rainfall during last year, over whole country, was excess of 87 per cent and was highest since 1994 and ranked second highest during last 50 years of period. These unusual & heavy downpours led to flash flooding in the area and caused damage to crops, property and tens of lost lives.

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 hief amount of observed monthly accumulated rainfall (mm)

July 2011

August 2010

Station

Observed

Normal

Departure

Station

Observed

Normal

Departure

Dahmial

593.0

----

----

Mithi

530.0

----

----

Risalpur

415.6

132.4

283.2

Kohat

373.1

115.6

257.5

Islamabad (AP)

335.2

305.3

29.9

Sialkot

335.4

323.5

11.9

Mianwali

271.4

134.8

136.6

Badin

331.2

92.6

238.6

Murree

265.4

364.1

-98.7

Okara

280.0

----

----

Lahore (PBO)

245.2

212.1

33.1

Chhor

276.0

69.4

206.6

Balakot

228.3

372.0

-143.7

Nawabshah

275.2

46.3

228.9

Kamra

228.1

----

----

Mir Pur Khas

263.1

----

----

Malam Jaba

219.0

----

----

Rawalakot

257.0

----

----

Sialkot

218.7

304.1

-85.4

Kakul

257.0

266.5

-9.5

Joharabad

217.0

----

----

Lahore (PBO)

255.1

194.5

60.6

Rawalakot

211.2

----

----

Padidan

251.2

40.5

210.7

Jhelum

205.3

263.2

-57.9

Noorpur thal

219.1

----

----

Muzaffarabad

201.2

359.4

-158.2

Murree

216.2

335.5

-119.3

 

Climate Data Processing Centre (CDPC)

Pakistan Meteorological Department, University Road, Karachi  PAKISTAN