I've been on holiday since the 13th March, the Sunday after the earthquake, ( Holiday was planned long in advance) so apologies for the lack of updates during these difficult times. Normal updates to the blog list will resume soon, I'll be updating this post with new and useful blogs and information as I go through the back log of submissions .

This one is very useful for latest updates in English on the transport situation in Kanto region :
Kanto Train Status

It is being translated by volunteers. Source Jorudan

Japan geigermap at-a-glance List of crowd sourced Geiger counters around the country.

Pachube Another site on Crowd sourced realtime radiation monitoring in Japan.

Japan Spark Relief Empowers communities & organizations to quickly share accurate information and provide relief during a disaster.

The Spark Relief team built and launched a housing site (web & mobile platform) for displaced Japan Quake victims to find temporary housing. It has gone live already, with a Japanese and English translation.

Within the first 4 hours, they had 50 community members offering housing not only in Japan, but various parts of the world. The team of volunteer developers built the entire web database platform within 3.5 days and it is up and taking off. reviewed on Mashable.com.

Quakebook.org The 2:46 Quakebook project started with a tweet and is on the verge of something great. Led by Blogger, OurManInAbiko, a call went out across Twitter for contributors to create a book to raise funds for Red Cross Japan. The contributions in 2:46 Quakebook have come from a wide variety of sources, and include photographs, personal accounts, drawings; each telling their own tale. All revenues from sales of the book goes directly to Red Cross, Japan. On sale NOW. GET YOUR COPY HERE, spread the word .

Links to all JapanTimes stories on the event including links to many other resources, phone numbers and websites.

Foreign Volunteers Japan Has been setup to gather willing foreigners, who wish to do volunteer work at an appropriate time and when required in the wake of the disaster.

Knit For Japan Knitting charity to support victims of the Tohoku quake setup by Bernd Kestler. Every stitch can make a difference!

Write for Tohoku Another writing project has already got 30 contributions is should be published soon. All proceeds to Red Cross for survivors of the Quake.

Tohoku Quake multilingual support A non profit organisation established to support foreign victims of the quake. Hotlines and information available in English , 中文 ,한글 ,Português, Español, Tagalog, Bahasa Indonesia, Tiếng Việt, ภาษาไทย ,「やさしい日本語」 日本語 .

Tsunami - Magnitude 9 a French initiative whereby drawings/paintings will be sold and profits sent to Give 2 Asia.

Modern Girl - Ways to help Japan An excellent list of ways to help.

Other fundraising activities for Quake survivors :

Help Japan Wiki Resources to aid Japan's earthquake relief, all in one place. Freely editable list of events and donation resources.

PlanetMOMEKO Prayers for Japan by the artist Yuko Adachi.

Three Lions and Wedding The Three Lions pub in Yokyohama is celebrating the Royal wedding with a fund raising event on April 29th 2011 from 6pm.

Shakin' it Back : Sunday 1st May at the 'What the Dickens' pub in Ebisu. Starts at 4:30 to 7:30pm, readers can are free to read their own poetry or perform music.

Run For Japan USA A 3.5 Km Fun Walk / 8Km Fun Run
Sunday, May 1 Race starts @8:30AM, Shoreline Park, Mountain View, CA. USA.

San Fran Chefs Unite On May 7th & 8th a line of top San Francisco chefs will create a meal you can’t get anywhere else. A 6 course Japanese inspired meal. All proceeds to Japanese Cultural and Community Center of Northern California's Quake relief fund.

Volunteer options for people prepared to go the affected area and help in person :

All Hands has space for 20 people to stay in two locations in Rikuzentakata and Ofunato.

Other links from Japan Times Japan Pulse blog.

Please help pass on the links and let me know any others that can be useful.