weather chicago ,storm will hit

its storngly expected from the weather report that storm will must hit the chicago area this morning ,there is need of some welcome relief from the heat but also spawning flash flood warnings and power otages ,the very first storms got teach around 6:30 a.m. in the north suburbs,there was two to three inches of rain already in lake and mchenry counties,severl roads are blocked and trafic is closed ,all the bussiness are also closed and people are staying at homes

At least 22 killed in US by heat wave

A great warmy heat wave in the central and southern United States has killed at least 22 people this week, and forecasters Wednesday said the heat was moving east and could last for weeks.The National Weather Service said 141 million people in more than two dozen states were under a heat advisory or warning because of the soaring temperatures. The country's midsection has been scorched off and on since late May.

Some cities already have experienced temperatures in the 100s, and the combined heat and humidity could push the so-called “real feel” temperatures to 115 degrees through Saturday, the National Weather Service (NWS) said.

In Chicago, the heat triggered unhealthy smog levels to the extent that the Illinois Environmental Protection Agency urged people to reduce polluting activities such as idling vehicles and mowing lawns.

Grid operators say they are prepared for the increased demand. According to the major operators in the Northeast and Midwest, power usage this week is the highest it’s been all year, but usage is still shy of record peaks. Texas and the southern Plains states will extend a long streak of hot weather. On Wednesday Oklahoma was expected to suffer its 30th day of triple-digit temperatures this year.

To meet demand, utilities are firing up special power plants used only a few days a year, delaying scheduled maintenance in order to keep all equipment on line and testing heat-sensitive switches and other equipment with high-tech devices like thermographers that can gauge temperatures to one-tenth of a degree.

las vegas weather

The National Weather Service in Las Vegas, Nevada 

issued a statement yesterday saying they had reached a record “dew point depression” of 129 degrees (or: low humidity of 1%) when their temperature was 107 with a dew point of -22 F.

Las Vegas’ largest dew point depression ever recorded was set on June 27, 2011 at 129 degrees. The dew point depression is the difference between the air temperature and dew point temperature.

About 4,000 homes in the metropolitan Phoenix area are without power -- and air-conditioning -- on a record-shattering day of heat in one of the nation's hottest cities.

Scattered showers and thunderstorms will continue to move northeast at 15 to 20 mph from Nipton California towards Boulder City Nevada and towards the Lake Mead National Recreation Area through 11 PM tonight. This activity will be capable of producing brief heavy downpours...gusty winds of 40 mph...and small hail. Some showers may occur in the southeast part of the Las Vegas Valley as this activity moves by.

we can have idea of the las vegas weather to see this pic of weather condition