Gather all of the materials needed so that you will be ready when a thunderstorm is in the forecast.
Monitor the weather forecast to find out when a thunderstorm is expected; wait for a storm with a few days of rain for best results. If flooding is expected with the storm, wait for the next storm.
Turn the soil with a garden rake or hoe to loosen the top 2 to 3 inches for planting. If the soil is not freshly turned or packed hard, you may need to use a tiller or plow to loosen large areas of soil.
Broadcast the seed over the loose soil either by hand or with a fertilizer spreader.
Cover the seed with 1/8 to 1/4 inch of fertile topsoil or organic compost. Alternatively, you can scratch the seed into the soil with a garden rake.
Pack the soil down slightly by running a cultipacker or roller over the soil. Packing the soil around the seeds improves germination.
Cover the ground with a thin layer of straw to keep birds from eating the seed before the storm and prevent erosion during the storm. Without this step to prevent erosion, there is a greater chance that the seeds will wash away in a moderate to heavy storm.