...AUGUST AND SUMMER HIGHLIGHTS...
...3RD WARMEST AND 18TH DRIEST AUGUST ON RECORD...
...5TH WARMEST AND 25TH WETTEST SUMMER ON RECORD...

THE ACTIVE LAST WEEK OF JULY CONTINUED DURING THE FIRST WEEK OF
AUGUST WITH SCATTERED SHOWERS AND THUNDERSTORMS...WITH FLASH FLOODING
BEING THE MAIN THREAT FROM STORMS. ON THE 4TH...A SLOW MOVING STORM
ON THE CATALINA MOUNTAINS DROPPED AROUND TWO INCHES OF RAIN WHICH
PRODUCED A FLASH FLOOD IN THE SABINO CANYON AND BEAR CANYON BASINS.
SADLY TWO HIKERS AT SEVEN FALLS IN BEAR CANYON WERE KILLED WHEN THE
FLASH FLOOD MOVED THROUGH. MANY OTHER HIKERS WERE STRANDED AND HAD TO
BE RESCUED BY HELICOPTER.

THE REST OF THE MONTH WAS RELATIVELY QUIET AS HIGH PRESSURE ALOFT
KEPT THUNDERSTORM ACTIVITY ON THE ISOLATED SIDE. HOWEVER SOME OF
THESE ISOLATED STORMS PACKED QUITE A WALLOP.

ON THE 10TH...A SEVERE THUNDERSTORM WITH VERY HEAVY RAIN RAPIDLY
DEVELOPED OVER THE FOOTHILLS AND MOVED WEST TOWARD THE NORTHWEST SIDE
OF THE METRO AREA. MANY REPORTS OF 3/4" HAIL AND VERY STRONG WINDS
WERE REPORTED. THE SEVERE THUNDERSTORM ALSO KNOCKED DOWN POWER LINES
AT ORACLE AND RIVER ROAD AND ALSO KNOCKED DOWN 4 TO 5 INCH DIAMETER
TREES WEST OF ORACLE ROAD BETWEEN INA ROAD AND ORANGE GROVE. THE
HEAVY RAIN IN THE FOOTHILLS PRODUCED FLASH FLOODING WITH A SWIFT
WATER RESCUE NEAR SWAN AND RIVER ROADS.

ON THE 14TH...A SEVERE THUNDERSTORM MOVED THROUGH ORO VALLEY. A
SPOTTER REPORTED 3/4" HAIL AND 60 MPH WIND GUSTS. LATER THAT NIGHT
INTO EARLY ON THE MORNING OF THE 15TH...A SEVERE THUNDERSTORM MOVED
THROUGH THE SOUTHERN PART OF THE METRO AREA WITH WIND GUSTS TO 60
MPH WHICH RIPPED A ROOF OFF A HOUSE AT IRVINGTON AND SUNSET.

ON THE 24TH...A SEVERE THUNDERSTORM MOVED THROUGH THE SOUTHEAST SIDE
OF THE METRO AREA PRODUCING 3/4" HAIL AND VERY STRONG WINDS THAT
KNOCKED DOWN POWER POLES ON 22ND STREET BETWEEN SWAN AND COLUMBUS.

THE AVERAGE MONTHLY TEMPERATURE OF 86.9 DEGREES IS TWO DEGREES ABOVE
NORMAL AND RANKS AS THE 3RD WARMEST AUGUST ON RECORD (TIED WITH
1962). TEMPERATURE EXTREMES RANGED FROM A HIGH OF 106 DEGREES ON THE
12TH AND 29TH TO A LOW OF 70 DEGREES ON THE 6TH. FOUR DAILY
TEMPERATURES RECORDS WERE SET OR TIED.

TYPE OF RECORD     DATE    NEW RECORD    OLD RECORD/YEAR
LOW MAXIMUM         6TH        80           86 / 1918
HIGH MINIMUM       22ND        80  (TIED)   80 / 2005
HIGH MINIMUM       23RD        81           78 / 1997
HIGH MINIMUM       30TH        80  (TIED)   80 / 1929

RAINFALL AMOUNTS ACROSS THE METRO AREA RANGED FROM ONE TO TWO INCHES
WITH LOCAL THREE TO FOUR INCH AMOUNTS IN THE FOOTHILLS AND FOUR TO
EIGHT INCHES IN THE CATALINA MOUNTAINS. THE TUCSON INTERNATIONAL
AIRPORT WAS THE DRY SPOT IN THE AREA AND OFFICIALLY RECORDED ONLY
NINE-TENTHS OF AN INCH. HOWEVER...SEVERAL GAGES THREE TO FIVE MILES
SOUTH AND EAST OF THE AIRPORT RECORDED BETWEEN ONE AND A HALF TO TWO
INCHES. THE NINE-TENTHS RANKS AS THE 18TH DRIEST AUGUST ON RECORD.

...AUGUST 2007 STATS...        MONTH     NORMAL     DEPARTURE
AVERAGE HIGH TEMPERATURE        98.0      97.4        + 0.6
AVERAGE LOW  TEMPERATURE        75.7      72.4        + 3.3
AVERAGE TEMPERATURE             86.9      84.9        + 2.0
RAINFALL                        0.90"     2.30"      - 1.40"
NUMBER OF 100+ DEGREE HIGHS      15        12         +  3

SUMMER 2007 WAS ANOTHER WARM ONE WITH AN AVERAGE TEMPERATURE OF 86.9
DEGREES WHICH RANKS AS THE 5TH WARMEST SUMMER ON RECORD (THRU AUGUST
30TH). SUMMER RAINFALL WAS AGAIN ABOVE NORMAL ACROSS THE METRO AREA.
THE INTERNATIONAL AIRPORT OFFICIALLY RECORDED JUST OVER SIX INCHES
/6.12"/ WHICH RANKS AS THE 24TH WETTEST SUMMER ON RECORD (THRU
AUGUST 30TH).

...SUMMER 2007 STATS...        SEASON     NORMAL     DEPARTURE
AVERAGE HIGH TEMPERATURE        99.7      99.1        + 0.6
AVERAGE LOW  TEMPERATURE        74.1      71.3        + 2.8
AVERAGE TEMPERATURE             86.9      85.2        + 1.7
RAINFALL                        6.12"     4.61"      + 1.51"
NUMBER OF 100+ DEGREE HIGHS      54        46          + 7

PAST 10 SUMMER TEMPERATURE AVERAGES/RAINFALL TOTALS/ETC...
               AVG. HIGH  AVG. LOW  AVG. TEMP  RAINFALL  100+ HIGHS
2007              99.7      74.1      86.9       6.12"       54
2006              98.7      74.9      86.8       8.91"       47
2005              99.8      73.6      86.7       5.25"       52
2004              99.0      72.1      85.5       1.81"       47
2003             100.4      73.7      87.1       4.54"       57
2002             100.5      73.4      86.9       4.10"       57
2001              99.1      72.6      85.9       2.48"       41
2000              98.8      73.0      85.9       4.85"       49
1999              97.0      71.7      84.3       7.36"       30
1998              98.4      71.4      84.9       5.76"       44
               ---------  --------  ---------  --------   ---------
'71-'00 NORMAL    99.1      71.3      85.2       4.61"       46
10 YR AVERAGE     99.1      73.0      86.9       5.12"       47

AS IS ALWAYS THE CASE WITH SUMMER THUNDERSTORMS...RAINFALL TOTALS
VARIED WIDELY ACROSS THE METRO AREA. THE FOLLOWING ARE SELECTED
LOCATIONS ACROSS EASTERN PIMA COUNTY (TOTALS COURTESY OF THE PIMA
COUNTY REGIONAL FLOOD CONTROL DISTRICT)...

CDO WASH DRAINAGE BASIN...
BIG WASH/RANCHO VISTOSO (ORO VALLEY) .. 7.80"
MOORE ROAD/LA CHOLLA BLVD ............. 6.06"
SOUTH ORO VALLEY ...................... 4.92"
CATALINA STATE PARK ................... 7.87"
GOLDER RANCH BRIDGE (CATALINA) ........ 6.14"
CATALINA MOUNTAINS (ABOVE 5000 FEET) .. 11"-18"
CDO WASH @ INA ROAD ................... 5.20"

TANQUE VERDE DRAINAGE BASIN...
SABINO CANYON DAM ..................... 6.06"
VENTANA CANYON ........................ 6.38"
SABINO CANYON @ TANQUE VERDE BRIDGE ... 6.93"
AGUA CALIENTE @ HOUGHTON .............. 6.89"
TANQUE VERDE RANCH .................... 5.94"

PANTANO WASH/RINCON CREEK...
PANTANO WASH @ HOUGHTON ............... 4.84"
GOLF LINKS @ KOLB ROAD ................ 6.57"
MANNING CAMP (ABOVE 5000 FEET).........13.54"

SANTA CRUZ RIVER & RILLITO BASINS...
TUCSON INTERNATIONAL AIRPORT .......... 6.12"
UNIVERSITY OF ARIZONA CAMPUS .......... 7.05"
NEAR MARANA AIRPORT ................... 3.03"
SANTA CRUZ RIVER @ INA ROAD ........... 3.82"
RILLITO @ LA CHOLLA BLVD .............. 5.04"
ALAMO WASH @ GLENN .................... 4.41"
SANTA CRUZ RIVER @ VALENCIA ........... 3.66"
WILMOT ROAD NEAR PRISON .............. 4.92"

2007 CONTINUES TO BE A WARM YEAR WITH AN AVERAGE TEMPERATURE OF 71.9
DEGREES. THIS IS TWO DEGREES ABOVE THE NORMAL THRU AUGUST AND RANKS
AS THE 11TH WARMEST YEAR TO DATE.

...2007 STATS THRU AUGUST...    YEAR     NORMAL     DEPARTURE 
AVERAGE HIGH TEMPERATURE        85.7      84.1        + 1.6
AVERAGE LOW  TEMPERATURE        58.2      55.9        + 2.3
AVERAGE TEMPERATURE             71.9      70.0        + 1.9
NUMBER OF 100+ DEGREE HIGHS      57        49          + 8 
RAINFALL                        7.75"     7.81"      - 0.06"
MONSOON SEASON RAINFALL         6.12"     4.61"      + 1.51" 
2006-07 WATER YEAR RAINFALL     8.64"    10.72"      - 2.08"

ONCE AGAIN THE TUCSON AREA WILL ENTER THE LAST MONTH OF THE WATER
YEAR (OCT 1 THRU SEP 30) BELOW NORMAL. EVEN THOUGH THE SUMMER HAD
ABOVE NORMAL RAINFALL...IT WAS NOT ENOUGH TO OVERCOME A DRY FALL
AND WINTER. THUS WITH ONE MONTH REMAINING IN THE WATER YEAR...THE
AIRPORT IS OVER TWO INCHES BELOW NORMAL AND WILL NEED 3.53" IN
SEPTEMBER FOR A NORMAL WATER YEAR. THERE HAVE BEEN ONLY SEVEN
SEPTEMBERS SINCE 1895 THAT HAS RECORDED RAINFALL OF 3.53" OR
GREATER...WITH THE LAST OCCURRING IN 1996 WHEN 3.68" WAS RECORDED
AT THE AIRPORT.

PAST 10 WATER YEAR RAINFALL TOTALS (OCT 1 THRU AUG 31)
2006-07 ...  8.64"     2002-03 ...  7.69"     1999-00 ...  6.07"
2005-06 ...  9.64"     2001-02 ...  6.12"     1998-99 ...  8.84"
2004-05 ... 10.97"     2000-01 ... 12.49"     1997-98 ... 14.91"
2003-04 ...  6.80"
1971-2000 NORMAL - 10.72" | TEN YEAR AVERAGE - 9.22"

...LOOKING AHEAD INTO SEPTEMBER...
THE CLIMATE PREDICTION CENTER FORECASTS THAT THE MONTH OF SEPTEMBER
WILL HAVE SLIGHTLY ENHANCED PROBABILITIES OF ABOVE NORMAL TEMPERATURES
AND EQUAL CHANCES FOR ABOVE OR BELOW NORMAL RAINFALL. FALL 2007 IS
FORECAST TO HAVE ENHANCED PROBABILITIES FOR ABOVE NORMAL TEMPERATURES
AND ENHANCED PROBABILITIES OF BELOW NORMAL RAINFALL.

AVERAGE HIGH TEMPERATURE ......... 94.0 DEGREES
AVERAGE LOW TEMPERATURE........... 67.7 DEGREES
AVERAGE MONTHLY TEMPERATURE ...... 80.9 DEGREES
RECORD HIGH TEMPERATURE ..........  107 DEGREES ON SEPTEMBER 14 2000
                                             (LAST OF 9 OCCURRENCES)
RECORD LOW TEMPERATURE ...........   43 DEGREES ON SEPTEMBER 26 1913
WARMEST SEPTEMBER (AVG) .......... 84.8 DEGREES IN 2000
COLDEST SEPTEMBER (AVG) .......... 76.3 DEGREES IN 1964
NORMAL RAINFALL .................. 1.45 INCHES
WETTEST SEPTEMBER DAY ............ 2.85 INCHES ON SEPTEMBER 10 1964
WETTEST SEPTEMBER ................ 5.11 INCHES IN 1964
DRIEST SEPTEMBER ................. 0.00 INCHES IN 1953

THE NUMBER OF DAYLIGHT HOURS WILL DECREASE FROM 12 HOURS 49 MINUTES
ON THE 1ST TO 11 HOURS 53 MINUTES ON THE 30TH...A LOSS OF 56 MINUTES. 
FALL BEGINS ON THE 23RD AT 2:51 AM MST WHEN THE SUN BEGINS TO CROSS 
THE EQUATOR INTO THE SOUTHERN HEMISPHERE.

GLUECK