29 seconds after detonation
Blast Wave
In the outermost band (4.7 miles, 1 psi) there would be only light damage to commercial structures and moderate damage to residences.
Casualties
Casualties are estimated at 25% injured and only a small number killed. Under the range of conditions, there will be an additional 3,000 to 75,000 burn injuries requiring specialized medical care.
Thermal Effects
Fire ignitions should be comparatively rare (limited to kindling materials such as newspaper or dry leaves) and easily controlled by the survivors.