Lunatics have been HAARPing about this for years!
And as usual they remain clueless, preferring conspiracy nonsense rather than educating themselves...
From the HAARP website:
During active ionospheric research, the signal generated by the transmitter system is delivered to the antenna array, transmitted in an upward direction, and is partially absorbed, at an altitude between 100 to 350 km (depending on operating frequency), in a small volume a few hundred meters thick and a few tens of kilometers in diameter over the site. The intensity of the HF signal in the ionosphere is less than 3 microwatts per cm2, tens of thousands of times less than the Sun's natural electromagnetic radiation reaching the earth and hundreds of times less than even the normal random variations in intensity of the Sun's natural ultraviolet (UV) energy which creates the ionosphere. The small effects that are produced, however, can be observed with the sensitive scientific instruments installed at the HAARP facility and these observations can provide new information about the dynamics of plasmas and new insight into the processes of solar-terrestrial interactions.
How, Lindy, does a a flux of mictrowats per cm^2 over a hundred miles up have the ability to affect the severity of microbursts down on Earths surface? The natural radiation flux from the sun is MANY orders higher... This is just conspiracy crap on the internet and of course you have swallowed it without thinking.
No surprise there.
The tunguska event was due to an airburst of a large object entering our atmosphere- I belive the only serious debate Is as to whether it was cometary or asteroidal. Computer modeling of the damage to the forest has allowed us to figure out its entry trajectory which matches the eyewitness accounts. Again - no real mystery. But I can find lunatic websites that claim that tunguska was due to ignition of fossilized mammoth farts- I guess you'd believe that too.