WEATHER FORECAST FOR THE NEXT SEVEN-DAY PERIOD
VALID 22ND TO 28TH JULY, 2014
Issue Date: 21/07/2014
Review of weather for the last seven-day period
Forecast for the next seven days (22nd to 28th
Ref No: KMD/FCST/11-2013/FD/47
14th to 20th July, 2014):
July, 2014):
The forecast indicates:
 Rainfall was reported over several parts of the country during
 Rainfall expected over few parts of the country.
the last 7 days;
 Rainfall figures indicate an increase in rainfall amounts
over the Western and Coastal parts of the country and a
decrease especially over Central;
 Day-time (maximum) temperatures increased over most
parts of the country and reduced over very few others;
 Night-time (minimum) temperatures generally decreased
over most stations and increased over fewer stations.
1.
SUMMARY
2. Weather Review for the last seven days 14th to 20th July, 2014
Rainfall Review
2.1
Rainfall categories
Range
<5 mm
5 - 20mm
20 - 50mm
>50mm
Category
Light
Moderate
Heavy
Very heavy
Rainfall was reported over several parts of the country during the last 7 days
(14th to 20th July, 2014). Rainfall figures indicate an increase in rainfall
amounts over the Western and Coastal parts of the country and a decrease
especially over Central. Figure 1 depicts the seven-day rainfall totals as
experienced from 14th to 20th July, 2014.
80.0
70.0
RAINFALL (MM)
60.0
50.0
40.0
30.0
20.0
10.0
LODWAR
MARSABIT
MOYALE
GARISSA
WAJIR
MANDERA
KITALE
KAKAMEGA
ELDORET
ELDORT A/P
PORT VICTORIA
CHEPTONGEI
CHORLIM
KAIMOSI
KAPENGURIA
KAPSARA
KIMILILI
KIPKABUS
LUGARI
MUMIAS
NABKOI
UHOLO
KERICHO
KISII
KISUMU
SUBA
BUTERE
SHIKOTI
KARURUMO
NYAHURURU
NAKURU
KABARAK
NAROK
KANGEMA
MURIRANJA
TUTHU
GITUGI
NYERI
EMBU
MERU
WRMA KERUGOYA
LAIKIPIA
M.A.B.
NGONG
KABETE
DAGORETTI
WILSON
JKIA
THIKA
MACHAKOS
MAKINDU
MUTOMO
KITUI
VOI
SHIGHARO
WUNDANYI
WERUGHA
LAMU
MALINDI
MSABAHA
MTWAPA
MOMBASA
KILINDINI
0.0
FIGURE 1:SEVEN-DAY RAINFALL 14TH TO 20TH JULY, 2014
The highest rainfall recorded in a single day was 61.8mm recorded on 15th July, 2014 at Mumias
Meteorological Station. The second highest rainfall value of 35.1mm was recorded at Kaimosi
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Meteorological Station on 20th July, 2014. It is noted that during this period, Kaimosi Meteorological
Station recorded the highest seven-day rainfall total of 74.9mm
Figure 2 depicts the spatial distribution of the rainfall totals for the seven-day review period (14th to
20th July, 2014) over the country.
Fig 2: Spatial map of the 14th to 20th July, 2014 rainfall totals
Fig 3: > 20mm in 24 hrs
2.2
Temperature
During the review period, day-time (maximum) temperatures mainly increased over most parts of the
country and reduced over very few others. Night-time (minimum) temperatures generally decreased
over most stations and increased over fewer stations.
Wajir Meteorological Stations recorded the highest daily maximum temperature of 35.4°C on 15th July,
2014 while Nyahururu Meteorological Station recorded the lowest daily minimum temperature of
4.8°C on 19th July, 2014. Lodwar Meteorological Station recorded the highest seven-day average
maximum temperature of 34.3°C while Nyahururu Meteorological Station recorded the lowest sevenday average minimum temperature of 7.5°C. (See Figure 4 below)
40.0
MIN
MAX
35.0
30.0
20.0
15.0
10.0
5.0
MOMBASA
MTWAPA
MSABAHA
MALINDI
VOI
MAKINDU
MACHAKOS
THIKA
JKIA
WILSON
DAGORETTI
STATION
MERU
NYERI
NAROK
NAKURU
NYAHURURU
KISUMU
KISII
KERICHO
ELDORET
KAKAMEGA
KITALE
MANDERA
WAJIR
MOYALE
0.0
LODWAR
TEMPERATURE IN oC
25.0
FIG4 SEVEN - DAY MAXIMUM & MINIMUM TEMPERATURES FROM 14TH TO 20TH JULY 2014
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3. FORECAST FOR THE NEXT SEVEN DAYS FROM 22ND TO 28TH JULY, 2014
The forecast indicates:
 Rainfall expected over few parts of the country.
DETAILED REGIONAL FORECAST FOR THE NEXT SEVEN DAYS 22ND TO 28TH JULY, 2014
The Lake Victoria Basin, Highlands West of the Rift Valley, Central and South Rift Valley
(counties of Siaya, Kisumu, Homabay, Migori, Kisii, Nyamira, Transnzoia, Baringo,
Uasingishu, Elgeyo-Marakwet, Nandi, Laikipia, Nakuru, Narok, Kajiado, Kericho, Bomet,
Kakamega, Vihiga, Bungoma and Busia) are expected to experience rains over few places in the
morning giving way to sunny intervals for entire forecast period. Showers and thunderstorms are
expected in the afternoon/evening over several places throughout the forecast period. The rainfall is
expected to be relatively intense;
Northwestern (counties of Turkana, West Pokot and Samburu) are expected to experience
sunny intervals in the morning throughout the forecast period and afternoon/evening showers and
thunderstorms over few places on the first 5 days of the forecast period. The regions covered are
expected to be on our border with Uganda;
Central Highlands including, Nairobi area (counties of Nairobi, Nyandarua, Nyeri, Kirinyaga,
Murang'a, Kiambu, Meru, Embu, and Tharaka) are expected to experience predominantly early
morning cloudiness accompanied by occasional light rains/drizzle over few places giving way to
sunny intervals. Showers are expected in the afternoon over few places throughout the forecast
period;
Northeastern (counties of Marsabit, Mandera, Wajir, Garissa and Isiolo) are expected to
experience sunny intervals in the morning and afternoon throughout the forecast period. The last 2
days are however expected to experience rains over few places in the morning;
Southeastern (counties of Kitui, Makueni, Machakos and Taita Taveta) are expected to
experience sunny intervals in the morning and afternoon throughout the forecast period;
The Coastal strip (counties of Mombasa, Tana River, Kilifi, Lamu and Kwale) are expected
to experience showers in the morning and mainly sunny intervals in the afternoon during the
forecast period except on the second day whereby only sunny intervals will prevail in the
morning.
N.B: This forecast should be used in conjunction with the daily (24-hour) forecast issued by
this Department.
KEY OF SCIENTIFIC WORDS USED
Most Places: Between 66% and 100%.
Several Places: Between 33% and 66%
Few Places: Between 0 and 33%
P. NYING’URO
FOR DIRECTOR OF METEOROLOGICAL SERVICES
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