July 10-11, 2008 Storm Statistics

Readings From Weather Bus.com:

First Measurable Rain Time: July 10, 2008 at 5:20pm
Last Measurable Rain Time: July 11, 2008 at 10:25am
Storm Total: 1.23in.
Max Rain Rate: 2.82in/hr
Peak Wind Gust: N @ 33mph
Total Lightning: 41,006

Comments:
This was a very active day to say the least! Several areas of thunderstorms moved into the area on July 10th through the morning hours on July 11th, including a severe thunderstorm which moved across portions of Apache Junction. As a result of the severe thunderstorm in Apache Junction, and heavy rainfall throughout the region, we have rated this storm to be in the overall severe category.

A low pressure system to the southwest of the valley, in northern Mexico, slowly moved closer to the area during the day on July 10th. This low pulled a copious amount of moisture into the state, from the south, and also resulted in good dynamics across the high country. A very moist atmosphere, decent dynamics from the low and fairly strong surface heating, allowed numerous thunderstorms to developed across the higher elevations to the NW, N, NE and E of the valley. Later in the afternoon and evening these thunderstorms moved off the high country and into the valley, where numerous reports of strong winds and flooding were received by the National Weather Service in Phoenix. A severe thunderstorm moved through Apache Junction between 7:00pm and 7:45pm, with a wind gust of 89mph being reported at 7:27pm. The Doppler Radar images to the right (alternating between Base Velocity and Base Reflectivity) where taken at 7:20pm and show the severe thunderstorm moving into Apache Junction.

The first thunderstorm to move through Apache Junction/Gold Canyon occurred around 5:00pm. A thunderstorm rapidly developed just to the east of Gold Canyon around 5:00pm, and moved to the west through the area. This storm resulted in heavy rainfall, gusty winds and occasional lightning. The first measurable rain was recorded around 5:20pm, with the rain ending by 5:40pm. This storm brought our location 0.15in. of rainfall.

By 6:15pm, things really began to get interesting. Strong to severe thunderstorms were moving/developing into the northwest portion of the valley, just to the NW of Sun City, while a severe thunderstorm formed over Roosevelt Lake, and was moving toward the west-southwest. By 7:15pm, a severe thunderstorm was about to move into Apache Junction from the Northeast, and by 8:09pm, the following reports were received by the National Weather Service in Phoenix, from Apache Junction, Mesa and Scottsdale:
..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0727 PM     TSTM WND GST     APACHE JUNCTION         33.40N 111.55W
07/10/2008  M89.00 MPH       PINAL              AZ   TRAINED SPOTTER

0727 PM     TSTM WND GST     APACHE JUNCTION         33.40N 111.55W
07/10/2008  M42.00 MPH       PINAL              AZ   TRAINED SPOTTER

0731 PM     TSTM WND GST     APACHE JUNCTION         33.54N 111.61W
07/10/2008  E67.00 MPH       PINAL              AZ   TRAINED SPOTTER

            MEASURED WIND GUST OF 67MPH

0731 PM     TSTM WND GST     APACHE JUNCTION         33.40N 111.55W
07/10/2008  M50.00 MPH       PINAL              AZ   TRAINED SPOTTER

0743 PM     TSTM WND DMG     MESA                    33.42N 111.75W
07/10/2008                   MARICOPA           AZ   TRAINED SPOTTER

            TREE LIMBS DOWN...MEASURED 40MPH GUST

0754 PM     TSTM WND GST     SCOTTSDALE              33.47N 111.93W
07/10/2008  E65.00 MPH       MARICOPA           AZ   TRAINED SPOTTER

            SUSTAINED 50 MPH...GUSTS TO 65MPH

By 8:00pm, strong to severe thunderstorms, with very heavy rainfall were pretty much across the entire valley. This particular area of storms did not bring much in the way of rainfall to the Gold Canyon area, however gusty winds of 25 to 30mph did sweep across the region. The peak wind gust at our location was from the north at 27mph, which occurred at 7:39pm.

Around 8:35pm, thunderstorms began to form around Florence Junction, to the southeast of Gold Canyon. These storms intensified and grew in size, due to an outflow which was produced by the severe thunderstorms in Phoenix. These storms continued to build across the area, and moved into the region from the west-northwest. The rain started in the area around 9:00pm, with steady moderate to heavy rainfall occurring throughout the area until about 10:35pm. The max instantaneous rain rate was 2.82in/hr., and occurred at 9:07pm. Light rain, with periods of moderate rainfall, continued until 4:45am on July 11th. This portion of the storm brought us a rain total of 1.07in..

A final area of light showers moved into the area around 10:25am, on July 11th, giving us an additional 0.01in., bringing the storm total to 1.23in..

Below are rain totals reported to us by the public. Weather Bus.com thanks you for your reports! (Reports are ordered from newest to oldest.)

Location: Red Mountain Lane in Gold Canyon
Report Time: 11th of July 2008 03:27PM EST
Reporter: Marla
Rain Total: 3.60in.
Comments: Rain total from July 10th at 5:00pm to July 11th at 11:30am. Pool water level is touching the cool-deck

Location: Montesa in Gold Canyon
Report Time: 11th of July 2008 2:37PM EST
Reporter: Don Ham
Rain Total: 2.80in.
Comments: Rain total from July 10th at 8:30pm to July 11th at 6:00am.

Location: Hummingbird Lane in Gold Canyon
Report Time: 11th of July 2008 12:10PM EST
Reporter: Terri Rozzini
Rain Total: +5.50in.
Comments: Rain total from July 10th at 9:00pm to July 11th at 5:00am. Rain gauge over topped at 5.50 inches. 8 inches of water in the wheelbarrow.

Location: Sleepy Hollow -- Del Monte -- Sierra Vista II H O A
Report Time: 11th of July 2008 12:10PM EST
Reporter: Paul, A.Contreras
Rain Total: 4.00in.
Comments: Rain total from July 10th at 4:00pm to July 11th at 8:45am. This one was a Beauty.

Location: S. Open Trail Lane, Peralta Trails, Gold Canyon
Report Time: 11th of July 2008 11:22AM EST
Reporter: Jean
Rain Total: 3.80in.
Comments: Rain total from July 10th at 5:00pm to July 11th at 9:00am.

Location: E. end, Silly Mtn.
Report Time: 11th of July 2008 11:41AM EST
Reporter: Robert
Rain Total: 1.90in.
Comments: Rain total from July 10th to July 11th at 7:00am.

Location: Peralta & Mt. Air Lane
Report Time: 11th of July 2008 10:08AM EST
Reporter: Ken Fleetwood
Rain Total: 3.40in.
Comments: Rain total from July 10th to July 11th at 7:00am.

Location: 200 yards east of Freestone Park in Gilbert
Report Time: 11th of July 2008 10:08AM EST
Reporter: Ken
Rain Total: 1.13in.
Comments: Rain total from July 10th to July 11th at 6:00am. Gusty winds in the evening, rain came from second wave from the East after 9:30pm raining during the night, no lightning.

Location: Scottsdale 101 and T'Bird
Report Time: 11th of July 2008 9:36AM EST
Reporter: Steve
Rain Total: 0.79in.
Comments: Rain total from July 10th at 5:00am to July 11th at 5:00am. Not much lightning or thunder. Some gusty winds and driving rain. Lighter rain overnight.

Location: Ironwood / McKellips
Report Time: 11th of July 2008 9:01AM EST
Reporter: Joe
Rain Total: 1.18in.
Comments: Rain total from July 10th in the evening to July 11th at 5:00am. High wind gust of 32mph Max rain rate of 5.49in/hr!!

Location: East of Red Sage 1/2 mi
Report Time: 11th of July 2008 8:43AM EST
Reporter: Pete
Rain Total: 4.00in.
Comments: Rain total from July 10th in the evening to July 11th at 6:00am.

Location: McKellips/Ironwood
Report Time: 11th of July 2008 8:41AM EST
Reporter: A. Zrst
Rain Total: 0.67in.
Comments: 44 mph wind gust. Sustained 25-30 mph during storm.

Location: near N 75th Ave & W. Deer Valley Road
Report Time: 11th of July 2008 3:48AM EST
Reporter: Jacob Brown
Rain Total: 0.90in.
Comments: 0.87" fell on 7/11. 0.81" fell between 8pm and 10 pm. Maximum rainfall rate was 2.74" per hour at 8:30. Peak wind gust was 29 at 8:30. At this hour it is still raining.

(The above rain totals were reported to us by the public. The accuracy of these reports is unknown.)

We thank you again for your reports! If it rained at your location, let us know by using the menu toward the top of the page (Public Reports --> Rain Reports). Your report will be added to this page.


Storm Pictures Taken on July 10-11, 2008: (Click Pictures To Enlarge)

Taken on July 10, 2008 @ 7:41pm
July 10, Radar Loop From 5:06pm to 5:47pm

July 10, Radar Loop From 5:34pm to 6:29pm

July 10, Radar Loop From 8:53pm to 9:30pm

July 10, Radar Loop From 10:20pm to 10:53pm




Storm Discussion Time Line: (From Oldest to Newest)

Title: July 10th: Chance Of Thunderstorms - Heavy Rain
Posted: July 10th, 2008, 10:00 am
[Read More]

Title: 3:20pm: T-Storms Forming?
Posted: July 10th, 2008, 3:22 pm
[Read More]

Title: 5:10pm: T-Storm Forms In Gold Canyon
Posted: July 10th, 2008, 5:11 pm
[Read More]

Title: 5:30pm: T-Storm Moves Through
Posted: July 10th, 2008, 5:34 pm
[Read More]

Title: 5:50pm: Another Storm Forming East
Posted: July 10th, 2008, 5:52 pm
[Read More]

Title: 6:20pm: Thunderstorm Update
Posted: July 10th, 2008, 6:18 pm
[Read More]

Title: 6:55pm: Severe Thunderstorm To The NNE
Posted: July 10th, 2008, 6:53 pm
[Read More]

Title: 7:15pm: Severe Thunderstorm North
Posted: July 10th, 2008, 7:16 pm
[Read More]

Title: Apache Junction - Severe Thunderstorms
Posted: July 10th, 2008, 8:16 pm
[Read More]

Title: 8:35pm: Thunderstorms To The SE
Posted: July 10th, 2008, 8:34 pm
[Read More]

Title: 8:55pm: Strong Thunderstorms
Posted: July 10th, 2008, 8:58 pm
[Read More]

Title: 9:25pm: Thunderstorms Continue
Posted: July 10th, 2008, 9:25 pm
[Read More]

Title: 11:15pm: T-Storm Update
Posted: July 10th, 2008, 11:14 pm
[Read More]




Rainfall Totals Released From The NWS:

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
1000 AM MST FRI JUL 11 2008

...24 HOUR PRECIPITATION FOR THE PHOENIX METRO AREA ENDING
AT 10 AM...

...24 HOUR PRECIPITATION FOR PHOENIX SKY HARBOR AIRPORT WAS
0.83 INCHES ENDING AT 10 AM...

NOTE...IF IT RAINED AT A LOCATION...THE AMOUNT WILL BE SHOWN
ONLY IF IT IS AT LEAST 0.04...4 HUNDRETHS OF AN INCH. ANY RAIN
AMOUNT LESS THAN 0.04 IS NOT REGISTERED AND IS SHOWN AS 0.00

                               6 HR PRECIPITATION (INCHES)
                               OLDEST  >>>>>>>>>>>  NEWEST
  ID     STATION NAME          10 AM   4 PM  10 PM   4 AM   24 HR
                               -4 PM -10 PM  -4 AM -10 AM   TOTAL


AHWATUKEE
MAHA3    AHWATUKEE              0.00   0.00   0.51   0.00    0.51
APACHE JUNCTION
PMDA3    USERY MOUNTAIN PARK    0.00   1.22   0.28   0.00    1.50
KNGA3    KINGS RANCH            0.00   0.67   0.43   0.00    1.10
AVONDALE
AVOA3    AGUA FRIA @ BUCKEYE    0.00   0.24   0.24   0.00    0.47
BUCKEYE
MBUA3    BUCKEYE FRS #2         0.00   0.51   0.08   0.00    0.59
CAREFREE
ZCAA3    FRAESFIELD MOUNTAIN    0.00   0.59   0.39   0.00    0.98
CRFA3    CAREFREE RANCH         0.00   0.00   0.31   0.04    0.35
CAVECREEK
HMBA3    HUMBOLDT MOUNTAIN      0.00   0.08   0.16   0.04    0.28
CBTA3    CAVE BUTTES DAM        0.00   0.00   0.00   0.12    0.12
CHANDLER
ZCHA3    EMF @ ARIZONA AVE      0.00   0.00   1.34   0.04    1.38
GILBERT
ZGIA3    MESA TOWER             0.00   0.71   0.00   0.00    0.71
ZCPA3    CROSSROADS PARK        0.00   0.35   0.31   0.12    0.79
GLENDALE
MGLA3    CITY OF GLENDALE       0.00   0.24   0.00   0.00    0.24
MMDA3    MARYLAND @ 27TH AVE    0.00   0.20   0.00   0.00    0.20
MSXA3    ACDC @ 67TH AVE        0.00   0.12   0.08   0.00    0.20
GOODYEAR
ZGYA3    TUTHILL @ RAY RD       0.00   0.08   0.12   0.00    0.20
GUADALUPE
ZGAA3    GUADALUPE FRS          0.00   0.08   0.16   0.04    0.28
MESA
MBDA3    BROADWAY @ DOBSON      0.00   0.55   0.43   0.04    1.02
ZBLA3    BROADWAY @ LINDSAY     0.00   0.87   0.35   0.04    1.26
MBHA3    BROWN RD. @ HORNE      0.00   1.14   0.28   0.04    1.46
MEEA3    KLEINMAN PARK          0.00   0.51   0.35   0.12    0.98
FALA3    THUNDER MOUNTAIN       0.00   1.42   0.28   0.04    1.73
MLAA3    MOUNTAIN VIEW PARK     0.00   0.75   0.35   0.00    1.10
WMSA3    QUEEN CREEK RD         0.00   0.00   0.67   0.00    0.67
ZUPA3    USERY PARK WS          0.00   1.22   0.28   0.00    1.50
NEW RIVER
NEWA3    SUNUP RANCH            0.00   0.59   0.00   0.08    0.67
PARADISE VALLEY
MCLA3    CAVE CREEK LANDFILL    0.00   0.12   0.12   0.00    0.24
MCCA3    E FORK CC #1           0.00   0.08   0.08   0.00    0.16
MLDA3    LOST DOG WASH          0.00   0.00   0.43   0.04    0.47
MRPA3    REATA PASS DAMSITE     0.00   0.51   0.31   0.04    0.87
PEORIA
NRDA3    NEW RIVER DAM          0.00   0.12   0.00   0.00    0.12
MBLA3    NEW RIVER @ BELL RD    0.00   0.04   0.08   0.00    0.12
PHOENIX
MBTA3    CESAR CHAVEZ PARK      0.00   0.94   0.35   0.00    1.30
MMIA3    MISSOURI @ 16TH ST     0.00   0.31   0.31   0.12    0.75
MOXA3    OLD XCUT @ MCDOWELL    0.00   0.28   0.31   0.16    0.75
MPAA3    PAPAGO PARK            0.00   0.39   0.35   0.04    0.79
MPPA3    PERRY PARK             0.00   0.04   0.35   0.04    0.43
ADBA3    ADOBE DAM              0.00   0.04   0.04   0.00    0.08
MPHA3    SKUNK CREEK @ I-17     0.00   0.63   0.08   0.00    0.71
MPMA3    JEFFERSON @ 4TH AVE    0.00   0.31   0.28   0.00    0.59
MROA3    ROESER @ 2ND ST        0.00   0.08   0.35   0.00    0.43
SOMA3    SOUTH MOUNTAIN         0.00   0.31   0.83   0.00    1.14
ZSFA3    SOUTH MOUNTAIN FAN     0.00   0.28   0.04   0.00    0.31
MTHA3    THOMAS & 16TH ST       0.00   0.43   0.24   0.00    0.67
MTQA3    THOMAS @ 48TH ST       0.00   0.04   0.43   0.04    0.51
QUEEN CREEK
ZQRA3    QUEEN CR @ RITTENHO    0.00   0.00   1.81   0.00    1.81
ZQCA3    QUEEN CREEK LANDFIL    0.00   0.00   1.38   0.04    1.42
QNCA3    EMF @ QUEEN CREEK R    0.00   0.31   1.10   0.04    1.46
SCOTTSDALE
SDLA3    INDIAN BEND WASH @     0.00   0.28   0.51   0.00    0.79
ZMDA3    MCDOWELL MOUNTAIN P    0.04   0.20   0.31   0.00    0.55
MPJA3    PIMA @ JOMAX           0.00   0.39   0.16   0.00    0.55
SUN CITY
MSWA3    SUN CITY WEST          0.00   0.12   0.04   0.00    0.16
SURPRISE
MDYA3    DYSART @ BELL RD       0.00   0.16   0.04   0.00    0.20
MCFA3    MCMICKEN FLOODWAY      0.00   0.39   0.04   0.00    0.43
TEMPE
MSPA3    SALT RIVER @ PRIEST    0.00   0.39   0.39   0.12    0.91
MTEA3    ASU SOUTH              0.00   0.31   0.39   0.04    0.75