No start? No turnover? No horn? No lights? Check with a voltmeter
Your car won't turn on.
Try start the car. Check the voltage.
If your car battery is dead, you will not be able to start your vehicle without a jump using jumper cables. When the car won't start and the lights on the dash aren't working, it is most likely your battery.
You need to charge the battery with a battery charger.
If the battery is dead the alarm will not go off
If the battery will not hold a charge it more than likely has a dead cell. If the battery is over 4 years old, replace it.
A storm has nothing to do with the battery going dead.
No, this will place a very heavy load on the alternator of the car and may result in burning out the diodes of the car charging the battery. You could easily ruin the alternator. Purchase a battery charger and charge the dead battery with that. Alternators are not made to charge dead batteries.
Your car won't start. No electrical items will work (radio, lights, power windows/locks...)
Get a donor car and use it's battery to start your car. You will need a set of quality jumper cables. Or you can charge the dead battery on the car for about 2 hours with a good 10 amp battery charger.
A completely dead battery or a bad connection to the battery.
Jump the car from another car battery or hook a charger to the battery.