Northern Zone Rainfall Analysis for Various Stations
NORTHERN ZONE
TIME SERIES, IDF CURVE PLOT FOR THE VARIOUS
STATIONS
The
average rainfall recorded
in WA was 70.12mm with highest daily Annual Maximum value of 142.4mm obtained on
15
th
August 2013.The lowest Daily Annual Maximum value recorded was 40.2mm on 11
th
September 1986 The slope
gives a positive correlation.
The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall
occurred within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in
Bole
was
78.43
mm with highest daily Annual Maximum value of
131.5
mm obtained on
13
th
September 2003
.The lowest Daily Annual Maximum value recorded was 44.3 on 29
th
September
2021.
The slope
gives a positive correlation.
The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall
occurred within 10 to 15 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in
Navrongo
was 77.71mm with highest daily Annual Maximum value of
148.2
mm obtained on
29
th
August 1985
.The lowest Daily Annual Maximum value recorded was 44.8 on 5
th
May 2014. The slope gives a positive
correlation.
The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred
within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in Zuarungu was 70.12mm with highest daily Annual Maximum value of
146.8
mm
obtained on
5
th
September 2012
.The lowest Daily Annual Maximum value recorded was 46.5 on 25
th
June 2006. The
slope gives a positive correlation.
The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall
occurred within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in
Bolga
was
68.92
mm with highest daily Annual Maximum value of
97.5
mm obtained on 19
th
July 2003
.The lowest Daily Annual Maximum value recorded was
39.4
on 15
th
August 1981. The slope gives a positive
correlation.
The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred
within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in
Yendi
was 77.66mm with highest daily Annual Maximum value of
146.9
mm obtained on
13
tH
August 2010.
The lowest Daily Annual Maximum value recorded was
50.2mm
on
25
th
August 1999
. The slope gives a positive
correlation.
The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred
within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in Walewale was
70.39
mm with highest daily Annual Maximum value of
164.9
mm obtained
on
22
nd
July 2007
.The lowest Daily Annual Maximum value recorded was
32.1
on
25
th
August 1988
. The slope gives a
positive correlation.
The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred
within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in
Tamale
was
83.66
mm with highest daily Annual Maximum value of
141.2
mm obtained on
12
th
August 2022
.The lowest Daily Annual Maximum value recorded was
25
th
June
1992
on 25
th
June 2006. The slope gives a negative correlation.
The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of
rainfall occurred within 1 to 5 hours. This indicates that shorter-duration events tend to have higher
intensities.
The analysis of rainfall data for stations in the Northern Zone reveals the average rainfall amounts, highest and lowest daily annual maximum values, correlation slopes, and rainfall intensity patterns. Stations like WA, Bole, Navrongo, Zuarungu, Bolga, and Yendi exhibit varying rainfall characteristics, with shorter-duration events showing higher intensities.
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Presentation Transcript
NORTHERN ZONE TIME SERIES, IDF CURVE PLOT FOR THE VARIOUS STATIONS
The average rainfall recorded in WA was 70.12mm with highest daily Annual Maximum value of 142.4mm obtained on 15th August 2013.The lowest Daily Annual Maximum value recorded was 40.2mm on 11th September 1986 The slope gives a positive correlation. The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in Bole was 78.43mm with highest daily Annual Maximum value of 131.5mm obtained on 13th September 2003.The lowest Daily Annual Maximum value recorded was 44.3 on 29th September 2021. The slope gives a positive correlation. The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred within 10 to 15 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in Navrongo was 77.71mm with highest daily Annual Maximum value of 148.2mm obtained on 29th August 1985.The lowest Daily Annual Maximum value recorded was 44.8 on 5th May 2014. The slope gives a positive correlation. The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in Zuarungu was 70.12mm with highest daily Annual Maximum value of 146.8mm obtained on 5th September 2012.The lowest Daily Annual Maximum value recorded was 46.5 on 25th June 2006. The slope gives a positive correlation. The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in Bolga was 68.92mm with highest daily Annual Maximum value of 97.5mm obtained on 19th July 2003.The lowest Daily Annual Maximum value recorded was 39.4 on 15th August 1981. The slope gives a positive correlation. The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in Yendi was 77.66mm with highest daily Annual Maximum value of 146.9mm obtained on 13tH August 2010.The lowest Daily Annual Maximum value recorded was 50.2mm on 25th August 1999. The slope gives a positive correlation. The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in Walewale was 70.39mm with highest daily Annual Maximum value of 164.9mm obtained on 22nd July 2007.The lowest Daily Annual Maximum value recorded was 32.1 on 25th August 1988. The slope gives a positive correlation. The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
The average rainfall recorded in Tamale was 83.66mm with highest daily Annual Maximum value of 141.2mm obtained on 12th August 2022.The lowest Daily Annual Maximum value recorded was 25th June 1992 on 25th June 2006. The slope gives a negative correlation. The rainfall intensity in millimeters per hour (mm/hour) shows that on average, a high amount of rainfall occurred within 1 to 5 hours. This indicates that shorter-duration events tend to have higher intensities.
