NIGERIAN METEOROLOGICAL AGENCY NATIONAL WEATHER FORECASTING AND CLIMATE RESEARCH CENTRE, NNAMDI AZIKIWE INTERNATIONAL AIRPORT, ABUJA, NIGERIA DIRECTORATE OF RESEARCH & TRAINING, RESEARCH DIVISION WEEKLY WEATHER REVIEW MONDAY 14TH- SUNDAY 20TH APRIL, 2014. The Inter-Tropical Discontinuity (ITD) fluctuated between latitude 13.5oN and latitude 16.1oN in the western border of the country and between latitude 11.2oN and latitude 16.3oN in the eastern border. Its mean positions in the western and eastern borders are 14.66oN and 13.59oN respectively. The maximum temperature ranged between 42oC at Yola, Potiskum, Sokoto and 30oC at Jos. The minimum temperature ranged between 26oC at Yelwa, Sokoto, Benin, Bauchi and 16oC at Jos. The relative humidity ranged between 100% at Akure and 11% at Kaduna. The maximum wind gust of 10m/s was recorded at Ijebu-Ode on the 18th of April, 2014. The highest daily rainfall of 51.7mm was recorded at Lafia on the 18th April, 2014. Figures 1-7 are the distribution maps of rainfall, horizontal visibility, highest temperature, lowest temperature, highest relative humidity, lowest relative humidity and maximum wind gust in the week respectively. MONDAY (14TH): Generally, fine weather conditions prevailed throughout the country, except Ikeja and Ijebu-Ode that had 3.8mm and 2.5mm rainfall respectively. The maximum temperature ranged between 42oC at Yola and 27oC at Lafia. TUESDAY (15TH): Fine weather conditions prevailed throughout the country except Portharcourt and Calabar that experienced 12.2mm and 0.3mm rainfall respectively. The maximum temperature ranged between 40oC at Potiskum and 30oC at Port Harcourt. WEDNESDAY (16TH): Thunderstorm were reported over Jos with 25.3mm rainfall, Iseyin 10.5mm, Abuja 0.9mm, and Bida 0.4mm rainfall respectively. Fine weather conditions prevailed in other parts of the country. The maximum temperature ranged between 42oC at Yola, Potiskum and 28oC at Jos. THURSDAY (17TH): Generally, fine weather conditions prevailed throughout the country except Jos that had 10.4mm rainfall. The maximum temperature ranged between 42oC at Yola, Potiskum and 30oC at Jos. FRIDAY (18TH): Widespread thundery activity prevailed in many stations across the country. Lafia had the highest rainfall of 51.7mm, Gombe 24.9mm, Lokoja 24.8mm, Akure 20.8mm, Ado-Ekiti 18.9mm, Kaduna 11.7mm, Abuja 8.4mm, Minna 6.7mm, Enugu 6.3mm, Makurdi 5.2mm, Potiskum 4.2mm, Jos 3.0mm, and Bida 1.8mm respectively. The maximum temperature ranged between 42oC at Yola, Sokoto and 28oC at Jos. SATURDAY (19TH): Thundery activity continued to be experienced over many stations across the country. Ikeja had 23.5mm rainfall, Ijebu-Ode 23.8mm, Ibadan 19.0mm, Oshogbo and Makurdi 13.6mm, Ado –Ekiti 11.7mm, Lokoja 4.6mm, Calabar 2.4mm, Minna 1.0mm, and Yola 0.4mm. The maximum temperature ranged between 39oC at Yola, Katsina and 27oC at Ibadan. SUNDAY (20TH): Generally, fine weather conditions prevailed except isolated cases of rainfall in few places. Abuja had 6.0mm, Jos 3.6mm, Calabar 2.2mm, and Benin 0.4mm respectively. The maximum temperature ranged between 41oC at Yola, Sokoto, Kano and 30oC at Jos. 14 N 14 N Sokoto Katsina 12 N Gusau Kano Bauchi Gombe Bida Yola Abuja Rainfall Lafia Ilorin Iseyin Lokoja Oshogbo Makurdi Ibadan Akure Abeokuta Ondo Ijebu-Ode Ikeja Enugu Ogoja Benin Onitsha Ikom Warri Kaduna Ibi Bida 32mm 6N 20mm Owerri 0 4E 6E 220 8E 440 660 10 E 880 Warri 0 14 E 2E 4E 6E 8E 440 660 880 10 E km 5km 12 E 14 E Fig. 2: Horizontal Visibility in week 16 (14th - 19th April 2014) 14 N Sokoto Katsina 12 N Gusau Sokoto Nguru Kano Katsina 12 N Potis Damat Maiduguri Gusau Zaria Bauchi Yola Lafia Ilorin Iseyin Lokoja Oshogbo Makurdi Ibadan Akure Abeokuta Ondo Ijebu-Ode Ikeja Enugu Ogoja Benin Onitsha Ikom Warri Kaduna TEMP Abuja Shaki Kano 42 C Ibi Bida 38 C 6N 36 C 26 C Lafia Ilorin Iseyin Lokoja Oshogbo Makurdi Ibadan Akure Abeokuta Ondo Ijebu-Ode Ikeja Enugu Ogoja Benin Onitsha Ikom Owerri Warri 34 C Calabar Yeno PHC Uyo TEMP Yola Abuja Shaki 40 C Gombe Jos Minna 8N Potis Damat Maiduguri Bauchi 10 N Jos Minna Bida Gombe Nguru Zaria Yelwa Kaduna 10 N Latitude Yelwa Latitude 220 Lngitude 14 N Ibi 24 C 22 C 20 C Owerri Calabar Yeno PHC Uyo 18 C 32 C 4N 0 2E 7km 4N -4mm 0 Fig. 1: Cummulative Rainfall in week 16 (14th - 19th April 2014) 6N 9km Owerri Lngitude 8N Ibi Calabar Yeno PHC Uyo km 12 E Horizontal Visibility Lafia 8mm 4N Yola Abuja Ilorin Iseyin Lokoja Oshogbo Makurdi Ibadan Akure Abeokuta Ondo Ijebu-Ode Ikeja Enugu Ogoja Benin Onitsha Ikom 8N Gombe Jos Shaki 44mm Potis Damat Maiduguri Bauchi Minna Calabar Yeno PHC Uyo 2E Kano 10 N Jos Shaki Nguru Zaria Yelwa Kaduna Minna Latitude Potis Damat Maiduguri Gusau Latitude Yelwa 6N Katsina 12 N Zaria 10 N 8N Sokoto Nguru 4E 6E 220 8E 440 10 E 660 880 4N km 12 E 0 30 C 14 E 2E Lngitude 4E 6E 220 8E 440 10 E 660 880 km 12 E Lngitude Fig. 3: Highest Temperature in week 16 (14th - 19th April 2014) Fig. 4: Lowest Temperature in week 16 (14th - 19th April 2014) 2 16 C 14 E 14 N 14 N Sokoto Katsina 12 N Gusau Kano Potis Damat Maiduguri Bauchi RH Shaki Lafia Ilorin Iseyin Lokoja Oshogbo Makurdi Ibadan Akure Abeokuta Ondo Ijebu-Ode Ikeja Enugu Ogoja Benin Onitsha Ikom Warri 85% Ibi 6N 440 8E 660 10 E 880 RH Gombe Jos Yola 70% Ilorin Iseyin Lokoja Oshogbo Makurdi Ibadan Akure Abeokuta Ondo Ijebu-Ode Ikeja Enugu Ogoja Benin Onitsha Ikom 55% 220 Bauchi Lafia Warri 0 6E 8N Potis Damat Maiduguri Abuja Shaki Owerri 4N 4E Bida 70% Calabar Yeno PHC Uyo Ibi 55% 40% Owerri Calabar Yeno PHC Uyo 25% 4N km 0 40% 12 E 14 E 2E 4E 6E 220 8E 440 10 E 660 880 km 12 E 10% 14 E Lngitude Lngitude Fig.5: Highest Relative Humidity in week 16 (14th - 19th April 2014) Fig. 6:Lowest Relative Humidity in week 16 (14th - 19th April 2014) 14 N Sokoto Katsina 12 N Gusau Nguru Kano Kaduna Bauchi 10 N Bida Yola Abuja Shaki 6N Gombe Jos Minna 8N Potis Damat Maiduguri Zaria Yelwa Latitude 2E Kaduna Minna Latitude Yola Abuja Kano 10 N Jos Minna Latitude Gombe Nguru Zaria Yelwa Kaduna Bida 6N Gusau Zaria Yelwa Katsina 12 N 10 N 8N Sokoto Nguru WIND Lafia Ilorin Iseyin Lokoja Oshogbo Makurdi Ibadan Akure Abeokuta Ondo Ijebu-Ode Ikeja Enugu Ogoja Benin Onitsha Ikom Warri Ibi 9m/s 7m/s Owerri Calabar Yeno PHC Uyo 5m/s 4N 0 2E 4E 6E 220 8E 440 10 E 660 880 km 12 E 3m/s 14 E Lngitude Fig. 7: Prevailing wind force in week 16 (14th - 19th April 2014) Please send your comments to: The Director-General / CEO, Nigerian Meteorological Agency (NIMET) National Weather Forecasting and Climate Research Centre, NnamdiAzikiwe International Airport, Abuja; or The Director Research & Training PMB 1215, Oshodi, Lagos. mail: weeklywxreview@gmail.com 3