From Jeff Poplin –
NASA revises (upward) preliminary estimates:
http://www.nasa.gov/mission_pages/asteroids/news/asteroid20130215.html
UMSF forum pages about the event:
http://www.unmannedspaceflight.com/index.php?showtopic=5524&st=285
Lots of good comments from knowledgeable folks…
Interesting link used by one poster to estimate impact effects:
http://impact.ese.ic.ac.uk/ImpactEffects/
Phil Plait’s update:
http://www.slate.com/blogs/bad_astronomy/2013/02/15/russian_meteorite_fragment_may_have_fallen_in_frozen_lake.html
Meteosat-9 images showing contrail shadow on ground!
First pics I’ve seen of possible fragments.
http://74.mvd.ru/news/item/845855/
(need to use Google translate, I guess)
NOAA. – another look from space