8:30pm, A strong W.D system is nearing N,N-W India.. N-W india to become cloudy from early morning.. http://ow.ly/i/1yqaX

The upcoming W.D will push showers into N-W India from tomorrow noon .!

The main circulation and trough of W.D will reach N,N-W India only on 23-Feb, but heavy rains expected before 23rd.. http://ow.ly/i/1yqiA 

A strong circulation and easterlies are expected to enter into S-E Bay on 26-Feb and track west after that ... http://ow.ly/i/1yq4E 

RT @rajugana: @weatherofindia Bangalore 9.45pm, Clear skies, Hot and sultry day. 

The weak W.D has cleared out from N,N-W India.. low level circulation seen over Uttarakand,Nepal and N.Uttarpradesh.. http://ow.ly/i/1yi2s

Next strong W.D is expected to reach N,N-W India by noon tomorrow and showers expected to start around late noon.. http://ow.ly/i/1yi5h

Scattered heavy rain expected for Kashmir, Punjab, Haryana, Himachal, #Delhi and Uttarakand from tomorrow noon.. http://ow.ly/i/1yiap

Some moisture still linger over Kerala and S.Tamilnadu ... showers possible even today in these zones... http://ow.ly/i/1yica

Showers due to W.D is expected to push into Uttarakand, N,N-W Uttarpradesh and Nepal on Friday and Saturday.. http://ow.ly/i/1yid7

On 21,22-Feb, some showers also expected over N,N-E Rajasthan and N,central Madhyapradesh.

Today morning, Fog has been observed over isolated pockets of Punjab and Delhi (Palam).

Yesterday, highest maximum temperature of  36.0°C was recorded at Satara (Maharashtra)

#Chennai - Yesterday max. temp was 31.5 C and today morning low was 22.2 C. The Low temp. is expected to drop by 1 or 2 C during next 3 days

Nagercoil - 1:51pm, Heavy rains for the past 1 hr ! ... Where is Nagercoil ? http://ow.ly/hPYQi

RT @sri_at72: A very dull morning after heavy rains with thunderstorms last night #Coimbatore #GoodMorning (8:56am)

#chennai - Having a warm and humid day with some minor low cloud formations. No threat of rain today !

Showers over S,central Tamilnadu and Kerala will clear from midnight today !

12:30pm, Cloudy over most of Tamilnadu and Kerala. Heavy rain over S.tip of Tamilnadu and  more showers over S.Kerala. http://ow.ly/i/1xVaK

12:30pm, N,N-W India is cloudy due to a weak W.D system ... http://ow.ly/i/1xVaK

January 2013, which saw 5 Western Disturbances and a severe on amonst them. Would be considered a bit above normal, considering the fact that Northern Sub-Continent region normally gets 3/4 WDs in the month.
And the WDs continued in February. F-1 ,an intense system ravaged thru Pakistan in perticular wher the 2 days accumulated rainfall was more than 200 mms in the North and NW. In India too, it was intense, with several day and month records reached or broken in rainfall and snowfall. Delhi getting 46 mms in a day !
Vagaries has mentioned some details and references to this F-1 here...

In such cases, It is found that there is sharp increase in the convergence flux of kinetic energy and weak adiabatic generation of kinetic energy over the troposphere. The vertically integrated generation of kinetic energy shows destruction in the proximity of the center of low pressure area and generation take place west of it in the intense 
western disturbance.

The accumulated rains chart for the sub continent for January shows the regions having received more than 200 mms, and the anomoly chart is also clear in its depiction.

Rainfall in S.Peninsula from morning of 15-Feb till morning of 17-Feb

Rainfall till 8:30am of 16-Feb
-----------------------------------------------------

TAMIL NADU:

Devala (Nilgiris Dist) 5, Peravurani (Thanjavur Dist), Ennore AWS (Tiruvallur Dist) and  Mahabalipuram (Kancheepuram Dist) 2 each and  Tambaram and  Chennai AP (both Kancheepuram Dist), Anna University and  DGP office (both Chennai Dist) and  Coonoor (Nilgiris Dist) 1 each.

                 

ANDHRA PRADESH:

Kampasagar(a) (dist Nalgonda) 8,  Karimnagar(a) (dist Karimnagar) 4,  Ramgundam (dist Karimnagar) 3 , Mahbubnagar,  Nalgonda,  Nizamabad  and Arogyavaram (dist Chittoor) 2 ech and  Medak , Adilabad, Adilabad(a) (dist Adilabad),  Rentachintala (dist Guntur)  and Anantapur 1 each.

KARNATAKA:

Srirangapatna (Mandya dt), Rayalpadu (Kolar dt), Madhugiri (Tumkur dt) 4 each; Kadra (Uttara Kannada dt), Pandavapura (Mandya dt) 3 each; Sulya (Dakshina Kannada dt), Kundapur (Udupi dt), Belgaum City, Chincholi, Sulepet (both Gulbarga dt), Raichur, Mudigere (Chikmagalur dt), Arakalgud, Holenarasipura (both Hassan dt), KR Sagara (Mandya dt), Doddaballapura (Bangalore Rural dt), Turuvekere, Pavagada (both Tumkur dt), Chintamani, Thondebhavi (both Chikaballapura dt), Chikaballapura 2 each; Hidkal (Belgaum dt), Bidar, Manthala (Bidar dt), Gulbarga, Nelogi (Gulbarga dt), Manvi (Raichur dt), Madapura (Kodagu dt), Balehonnur (Chikmagalur dt) 1 each.

                    

KERALA:

Kudulu (Kasaragod district) 5, Ottappalam (Palakkad district) 4, Pattambi (Palakkad district) 3, Kunnamkulam (Thrissur district), Parambikulam and  Thrithala (both in Palakkad district), Thalasserry (Kannur district) and  Vadakara (Kozhikode district) 2 each and Kozhikode  and  Quilandy (both in Kozhikode district), Ponnani (Malappuram district) and  Vythiri (Wayanad district) 1 each. 

Rainfall till 8:30am of 17-Feb

-----------------------------------------------------

Tamil Nadu:

        Thiruvalangadu (Tiruvallur Dist) 12, Poondi (Tiruvallur Dist), Peraiyur (Madurai Dist) 6 each, Tiruvallur, Sriperumbudur (Kancheepuram Dist) 5 each, Ennore AWS (Tiruvallur Dist), Ponneri (Tiruvallur Dist) 4 each, Arakonam (Vellore Dist), Tiruttani (Tiruvallur Dist), Sholingur (Vellore Dist) 3 each, Poonamallee (Tiruvallur Dist), Vaniaymbadi (Vellore Dist), Gudiyatham (Vellore Dist), R.K.Pet (Tiruvallur Dist), Red hills (Tiruvallur Dist) 2 each and Watrap (Virudhunagar Dist), Melalathur (Vellore Dist), Cholavaram (Tiruvallur Dist), Tambaram (Kancheepuram Dist), Ambur (Vellore Dist), Krishnagiri, Pallipattu (Tiruvallur Dist), Vellore, Chennai AP (Kancheepuram Dist) 1 each. 

Kerala:

        Agathi (Lakshadweep) 3, Kannur & Thalasserry (both in Kannur district) 2 each and Amini (Lakshadweep), Kudulu (Kasaragod district), Ottappalam (Palakkad district), Taliparamba (Kannur district) & Vythiri (Wayanad district) 1 each.

Karnataka:

        Mangalore and Panambur 6 each, Hosanagar (Shimoga dt), Bajpe, Karwar, Kumta (Uttara Kannada dt), N.R.Pura (Chickmagalur dt) 3 each, Jagalpet and Manki (Uttara Kannada dt), Kalghatgi (Darwad dt), Kammardi and Mudigere (both Chikmagalur dt), Agumbe , Thalaguppa and Thirthahalli (both Shimoga dt) 2 each and Bantwal, Mani, Mulki, Subramanya and Sulya (all Dakshina Kannada dt), Kollur (Udupi dt), Ankola, Bhatkal, Gersoppa, Kadra and Sirsi (all Uttara Kannada dt), Honavar, Shirali, Chittapur (Gulbarga dt), Bevoor (Koppal dt), Raichur, Bellary, Ajjampura (Chikmagalur dt), Rayalapadu (Kollur dt), Humchadakate and Linganamakki (both Shimoga dt) 1 each.

Andhra Pradesh:

        Vinjamur (dist Nellore) 15, Vijayawada A.P. (dist Krishna) 15, Mangalgiri (dist Guntur) 12, Guntur (dist Guntur) 12, Lam(a) (dist Guntur) 11, Yerragondapalem (dist Prakasam) 11, Chittoor (dist Chittoor) 9,Venkatagiri Town (dist Nellore) 9, Tiruvuru (dist Krishna) 9, Vuyyuru(a) (dist Krishna) 9, Sathenapalli (dist Guntur) 9, Atchempet (dist Guntur) 8, Addanki (dist Prakasam) 8, Gudivada (dist Krishna) 8, Kaikalur (dist Krishna) 7, Masulipatnam Cdr (dist Krishna) 7, Bapatla (dist Guntur) 7, Tenali (dist Guntur) 7, Nandigama (dist Krishna) 6, Sullurpet (dist Nellore) 6, Tada (dist Nellore) 5, Macharla (dist Guntur) 5, Nuzvidu (dist Krishna) 5, Rapur (dist Nellore) 5, Atmakur (dist Nellore) 5, Gudur (dist Nellore) 5, Utukuru(a) (dist Cuddapah) 5, Srikalahasthi (dist Chittoor) 5, Rajampet (dist Cuddapah) 5, Tirupati   Aero (dist Chittoor) 5, Puttur (dist Chittoor) 5, Ibrahimpatnam (dist Rangareddy) 5, Suryapet (dist Nalgonda) 4, Madhira (dist Khammam) 4,Lakkireddipalam (dist Cuddapah) 4, Perumallapalli(a) (dist Chittoor) 4, Pakala (dist Chittoor) 4, Satyavedu (dist Chittoor) 4,Cumbam (dist Prakasam) 4, Udayagiri (dist Nellore) 4, Ongole (dist Prakasam) 4, Kavali (dist Nellore) 3, Darsi (dist Prakasam) 3, Rentachintala (dist Guntur) 3, Kavali(a) (dist Nellore) 3, Eluru (dist West Godavari) 3, Avanigadda (dist Krishna) 3, Sriharikota(a) (dist Nellore) 3, Bhimadole (dist West Godavari) 3, Bhimavaram (dist West Godavari) 3, Narasapur(a) (dist West Godavari) 3, Chintalapudi (dist West Godavari) 3, Koilkuntla (dist Kurnool) 3, Badvel (dist Cuddapah) 3, Tirumalla(a) (dist Chittoor) 3, Rayachoti (dist Cuddapah) 3, Kamalapuram (dist Cuddapah) 3, Owk (dist Kurnool) 3, Maddanur (dist Cuddapah) 3, Dhone (dist Kurnool) 3, Jammalamadugu (dist Cuddapah) 3, Kuppam (dist Chittoor) 3, Medchel/manchal (dist Rangareddy) 3, Asifabad (dist Adilabad) 2, Devarkonda (dist Nalgonda) 2, Mahbubabad (dist Warangal) 2, Kampasagar(a) (dist Nalgonda) 2, Miryalguda (dist Nalgonda) 2, Eturnagaram (dist Warangal) 2, Chevella (dist Rangareddy) 2, Shadnagar (dist Mahbubnagar) 2, Yellandu (dist Khammam) 2, Aswaraopet(a) (dist Khammam) 2,Nandyal (dist Kurnool) 2, Proddatur (dist Cuddapah) 2,Seetharampuram (dist Nellore) 2, Narsapuram (dist West Godavari) 2, Tadepalligudem (dist West Godavari) 2, Polavaram (dist West Godavari) 2, Rapalle (dist Guntur) 2, Kakinada (dist East Godavari) 2, Prathipadu (dist East Godavari) 2, Nellore (dist Nellore) 2, Yellamanchili (dist Vishakhapatnam) 2, Rajahmundry (dist East Godavari) 2, Piduguralla (dist Guntur) 2, Koyyalagudem (dist West Godavari) 2, Koderu (dist West Godavari) 1, Tanuku (dist West Godavari) 1, Peddapuram (dist East Godavari) 1, Podili (dist Prakasam) 1, Kandukur (dist Prakasam) 1, Yelamanchili(a) (dist Vishakhapatnam) 1, Amalapuram (dist East Godavari) 1, Chintapalli (dist Vishakhapatnam) 1, Arogyavaram (dist Chittoor) 1, Thambalapalli (dist Chittoor) 1, Porumamilla (dist Cuddapah) 1, Gooty (dist Anantapur) 1, Punganur (dist Chittoor) 1, Tadpatri (dist Anantapur) 1, Pattikonda (dist Kurnool) 1, Venkatagirikota (dist Chittoor) 1, Pulivendla (dist Cuddapah) 1, Nalgonda (dist Nalgonda) 1, Warangal(a) (dist Warangal) 1, Bhadrachalam (dist Khammam) 1, Kalwakurthi (dist Mahbubnagar) 1, Achampet (dist Mahbubnagar) 1, Hyderabad(a) (dist Hyderabad) 1, Hyderabad A.p. (dist Hyderabad) 1, Parkal (dist Warangal) 1, Golkonda (dist Hyderabad) 1, Hanamkonda (dist Warangal) 1, Mulug (dist Warangal) 1, Jangaon (dist Warangal) 1, Bhongir (dist Nalgonda) 1, Manthani (dist Karimnagar) 1, Pargi (dist Rangareddy) 1, Huzurabad (dist Karimnagar) 1, Ramgundam (dist Karimnagar) 1, Dummugudem (dist Khammam) 1.

Rainfall till 8:30am of 18-Feb

-----------------------------------------------------

Tamil Nadu:

        Thiruvalangadu (Tiruvallur Dist) 12, Poondi (Tiruvallur Dist), Peraiyur (Madurai Dist) 6 each, Tiruvallur, Sriperumbudur (Kancheepuram Dist) 5 each, Ennore AWS (Tiruvallur Dist), Ponneri (Tiruvallur Dist) 4 each, Arakonam (Vellore Dist), Tiruttani (Tiruvallur Dist), Sholingur (Vellore Dist) 3 each, Poonamallee (Tiruvallur Dist), Vaniaymbadi (Vellore Dist), Gudiyatham (Vellore Dist), R.K.Pet (Tiruvallur Dist), Red hills (Tiruvallur Dist) 2 each and Watrap (Virudhunagar Dist), Melalathur (Vellore Dist), Cholavaram (Tiruvallur Dist), Tambaram (Kancheepuram Dist), Ambur (Vellore Dist), Krishnagiri, Pallipattu (Tiruvallur Dist), Vellore, Chennai AP (Kancheepuram Dist) 1 each. 

Kerala:

     Kudulu (Kasargod dt) 8, Agathi Airport and Kavaratti 5 each, Kochi Airport and  Ernakulam South (Ernakulam dt) 4 each, CIAL Kochi, Quilandy (Kozhikode dt), Perumbavur (Ernakulam dt), Vaikom and Kanjirapalli (both Kottayam dt) and Idukki 2 each and Taliparamba (Kannur dt), Kottayam and Konni (Pathanamthitta dt) 1 each.

Karnataka:

      Bangarpet (Kolar dt) 3, Pandavapura (Mandya dt) 2 and Mangalore Airport, Anekal (Bangalore Urban dt), Kottigeharra (Chikmagalur dt) and Madikeri 1 each.

Andhra Pradesh:

       Puttur (dist Chittoor) 9, Pakala (dist Chittoor) 6, Satyavedu (dist Chittoor) 2, Chittoor (dist Chittoor) ,  Tekkali (dist Srikakulam) , Tadepalligudem (dist West Godavari) , Dummugudem (dist Khammam) 1 each.   

Showers are expected to clear out from Tamilnadu and Kerala from tomorrow !!

Showers are expected to clear out from Tamilnadu and Kerala from tomorrow !!