Weather Forecasting Techniques Questions and Answers

Q: Short range forecasting refers to forecasting the weather valid for :

Short range forecasts are valid for 1 to 3 days.The India Meteorological Department and the WMO classify forecasts by validity: nowcasting covers a few hours, short range up to about 72 hours (1-3 days), medium range about 3 to 10 days, and extended range from about 10 days to 30 days.So 4 to 5 days falls in the medium range, and 1-2 weeks and 3-4 weeks belong to the extended range, which rules out the other options.

Q: Medium range forecast is valid for :

A medium range forecast is valid for 3 days to about 2 weeks.Weather forecasts are classed by lead time. Short range covers up to about 3 days. Medium range covers from about 3 days to around 10 days, up to two weeks in some usages, the period for which numerical weather prediction still has useful skill in day-to-day weather. Extended range covers from about 2 weeks to a month, and long range covers a month to a season.3 to 5 weeks and 4 to 6 weeks are extended or long range. About 2 to 3 weeks is the extended-range (sub-seasonal) window, not medium range.

Short range forecasting refers to forecasting the weather valid for :

A.1 week to 2 weeks
B.3 weeks to 4 weeks
C.1 to 3 days
D.4 to 5 days

Exam Year(s)

MH SET - 2023, SET Exam - 2023,

Answer: C

Short range forecasts are valid for 1 to 3 days.

The India Meteorological Department and the WMO classify forecasts by validity: nowcasting covers a few hours, short range up to about 72 hours (1-3 days), medium range about 3 to 10 days, and extended range from about 10 days to 30 days.

So 4 to 5 days falls in the medium range, and 1-2 weeks and 3-4 weeks belong to the extended range, which rules out the other options.

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Medium range forecast is valid for :

A.3 to 5 weeks
B.4 to 6 weeks
C.3 days to about 2 weeks
D.about 2 weeks to about 3 weeks

Exam Year(s)

MH SET - 2025, SET Exam - 2025,

Answer: C

A medium range forecast is valid for 3 days to about 2 weeks.

Weather forecasts are classed by lead time. Short range covers up to about 3 days. Medium range covers from about 3 days to around 10 days, up to two weeks in some usages, the period for which numerical weather prediction still has useful skill in day-to-day weather. Extended range covers from about 2 weeks to a month, and long range covers a month to a season.

3 to 5 weeks and 4 to 6 weeks are extended or long range. About 2 to 3 weeks is the extended-range (sub-seasonal) window, not medium range.

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