SOP for Flood Forecasting & Early Warning - UNESCO Islamabad

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23.3 Early Warning a) Significant Flood Forecast Under the effect of an approaching weather system the flood situation undergoes rapid fluctuations. The quite often necessities the issuance of a special flood forecast pertaining to a specific site . This is in fact the most important forecast issued by FFD. Most commonly it is issued in respect of the rim station but can also be issued for any other site downstream. A common early warning format is as given below:- GOVERNMENT OF PAKISTAN PAKISTAN METEOROLGICAL DEPARTMENT FLOOD FORECASTING DIVISION 46-JAIL ROAD LAHORE-54000 Sr No_________ Dated_________ SIGNIFICANT FLOOD FORECAST River ____________________________ at _____________________________ Likely to cross ______________________________________________ cusecs (_________________________________________________ Flood Level) during the period from ________________________________ hours PST of _______________________________to_____________________ hours PST of _______________________________________________ For Chief Meteorologist Time of Issue_______________ Hrs PST c:\documents and settings\administrator\desktop\cd material nust\international training workshop\session 5\2_sop pmd_51 pages.doc
) Areal Flood Inundation Flood Forecast This forecast will be issued on the basis of flood inundation maps corresponding to different flood levels when the flood exceeds the exceptionally high flood level and the spillover is expected to occur causing inundation of the areas along the river channel. The forecast may take the shape as given below:- River Sutlej between the reach Sulemanki to Islam is likely to reach an exceptionally high flood level amounting to discharge ranging between ______ and ________ Consequently , the under mentioned areas are likely to come under water to extent as mentioned against each . District Village Depth of Water 2.4 Miscellaneous Flood Forecast / Information a) Weather / Flood Forecast Such important Government functionaries as are directly or indirectly related to the flood mitigation process but are not involved in the flood fighting operation do not need the flood data at each flood measurement site but definitely need to be kept informed of the flood and weather situation in general . In order to cater for this, weather and flood forecast has three parts. Part-1 indicates the prevailing meteorological situation .Part-II gives the rainfall recorded during the last 24 hours. Part III gives the weather and the flood forecast in descriptive form which can be easily understood by a non technical person. b) Flood Information to Media Flood information to the electronic and press media is often passed to the public through press briefings conducted in the office of the Chief Met FFD. Invitation to the press is sent through the press Information Department ( PID) of the Punjab Govt .A representative of the PID is made available on two shift duty roster basis to be present during the morning as well as evening hours in the Flood Warning Centre. Press briefings are generally conducted in the evening at about 6 c:\documents and settings\administrator\desktop\cd material nust\international training workshop\session 5\2_sop pmd_51 pages.doc
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Page 3 and 4: Introduction Planes of Pakistan hav
Page 5 and 6: Chapter 1 Flood Causes & Management
Page 7 and 8: Table 1.3 S.No. Flood Limits NAME O
Page 9 and 10: c. Continue moving in the northerly
Page 11 and 12: the financial and technical support
Page 13 and 14: Heaviest and the most frequent summ
Page 15 and 16: i) Qualitative flood forecast ii) Q
Page 17: High/Critical flood equivalent to _
Page 21 and 22: Chapter 3 Responsibilities of the F
Page 23 and 24: placed in the forecasts issued by C
Page 25 and 26: especially in respect of the river
Page 27 and 28: season. During the flood emergency,
Page 29 and 30: the Engineers. Lack of understandin
Page 31 and 32: FFC was established in 1977 to prov
Page 33 and 34: Sukkur and Kotri barrages were rece
Page 35 and 36: appropriate recipient: the flood fo
Page 37 and 38: FLOOD ROUTING THROUGH MANGLA RESERV
Page 39 and 40: Annexture-5C FLOOD ROUTING THROUGH
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SOP for Flood Forecasting & Early Warning - UNESCO Islamabad

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