August 16, 2007 Storm Statistics

Readings From Weather

First Measurable Rain Time: August 16, 2007 at 4:50pm
Last Measurable Rain Time: August 16, 2007 at 6:55pm
Storm Total: 0.47in.
Max Rain Rate: 2.62in./hr.
Peak Wind Gust: NE @ 43mph
Total Lightning: 63,786

Note: The National Weather Service Doppler Radar for the Phoenix area, was down during this storm due to a part failure. As a result, no local radar images will be available for this storm. Instead, the radar loop below is from Tucson National Weather Service Doppler Radar (Long Range Composite Reflectivity).

Before the precipitation portion of this storm effected the area, a large outflow moved through, with a peak wind gust from the Northeast at 43mph occurring at 4:47pm. The wind gusts at our location were at or above 20mph from 4:15pm to 5:30pm. Wind was strong enough one mile north of Superior to blow a window out of an office building and a truck. Also, accidents occurred on I-10 at mile posts 207, 208.5, 219 and 224 due to the dust storm. Below are some safety tips from the National Weather Service on driving in dust storms:
  1. If dense dust is observed blowing across or approaching a roadway, pull your vehicle off the pavement as far as possible, stop, turn off lights, set the emergency brake, take your foot off of the brake pedal to be sure the tail lights are not illuminated.
  2. Don't enter the dust storm area if you can avoid it.
  3. If you can't pull off the roadway, proceed at a speed suitable for visibility, turn on lights and sound horn occasionally. Use the painted center line to help guide you. Look for a safe place to pull off the roadway.
  4. Never stop on the traveled portion of the roadway.

The rain started around 4:50pm, with 0.02in. of rain falling by 5:00pm. The heavier rain then moved through, and fifteen minutes later, at 5:15pm, we had received 0.30in. of rainfall. This is also the time frame when the peak rain rate was set at 2.62in/hr. occurring at 5:06pm.. By 5:30pm, the rain weakened to light showers until around 6:55pm, leaving us with a storm total 0.47in..

Mike, near Falling Star & Cloud View in Gold Canyon, reported 0.88in. of rainfall. He also reported that the wind freshened about 4:00pm. By 4:30pm the rain started. Heavy the first 45 minutes then turned into a nice drizzle. All local washes running. The rain gauge on Kings Ranch road reported 0.47in. of rainfall. Thank you for your rain reports! The above rain totals were reported to us by private individuals. The accuracy of these reports is unknown. If it rained at your location, let us know by clicking on the link at the top of the page titled "Public Rain/Weather Reports". Your report will be added to this page.

This storm also resulted in a huge drop in temperature. The peak instantaneous temperature rate was -21.06in/hr. at 5:06pm. As a result the temperature went from 104.9°F at 4:15pm to 75.3°F at 5:15pm, which is a 29.6°F drop in one hour!! This large drop in temperature can be seen in the graph to the right. The low for the day was set at 5:25pm, when the temperature bottomed out at 74.0°F, which is less then two hours after the high of the day occurred at 3:37pm, when the temperatures reached 106.0°F.

Below is the radar loop from 3:04pm to 6:59pm. This loop shows the storms which developed to the northeast and east of Gold Canyon. These storms then moved into the area and slowly dissipated.

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