Residents as far north as Minneapolis are experiencing heat indexes of 115°F for the third day in a row.

Weather Defender basemap with Heat Index Contours enabled

The rest of the country is experiencing significant above-average heat:

Remember that extreme temperatures are the #1 weather killer, more than tornadoes, hurricanes and lightning combined. If you must be outside, look for shade and avoid unnecessary physical exertion during peak heat hours (noon-5PM). Infants and elderly are especially at risk during extreme heat, and should be monitored closely.  Finally, drinking lots of water (16-32oz per hour) is a must to avoid dehydration.

Read more weather survival tips at SurvivalCache.com.

"This software does indeed save lives. Thanks for destributing this software for the average Joe. I just subscribed for a year subscription. Thank you."

-Levon A. Volpe

Commercial Client & South Dakota Resident Patrick Callahan uses Weather Defender Commercial Edition to predict where weather will strike and stay ahead of the storm.

Visit Patrick's Photography Blog:
http://patrickmcallahan.com/2011/03/the-power-of-mother-nature/