Monsoon 2012 so far, issued by National Weather Service Tucson Arizona
Monsoon so far
Tuesday July 17th
With 30% of the 2012
Monsoon in the books, it has been a pretty good one for most areas across
southeast Arizona. This is a short recap on rainfall amounts across the
area with data coming from NWS sites and sources like rainlog.org,
and the Pima
County Regional Flood Control District gages.
Lets start out with
eastern Pima county which has been hit hard with widespread thunderstorm
activity occurring on July 4th, 14th and 15th. Rainfall amounts have been
very impressive with over 3 inches occurring in Oro Valley on the 4th,
1"-2" occurring in Oro Valley and Sabino Canyon area on the
14th, and widespread 0.50"-1.50" with localized 2"-3"
occurring across most of the Tucson metro area on the 15th. Looking at
the area wide rainfall totals for 2012 Monsoon, values generally ranged
from 1"-3" with localized areas recording between 3.5"-5".
The Tucson International Airport, the official recording site for Tucson,
has recorded 3.85" so far during the 2012 Monsoon. This currently
ranks as the second wettest June 15 to July 16 period on record, just
shy of the record of 3.94" which occurred in 1919. Normal rainfall
for June 15 to July 16 period is 1.04" Here are some other interesting
facts for Tucson:
- Record three straight
days in July of half inch or more of rain at the airport, eclipsing
the old record of 2 days which last occurred in 1972 (7/15-16).
- July rainfall of
3.51" at the airport ranks as the 20th wettest July on record.
- Prior to July rainfall,
2012 ranked as the 8th DRIEST on record. Now 2012 ranks as the 36th
WETTEST to date with 4.53". Normal is 4.16".
- On the temperature
side, July has been cooler than normal with an average temperature of
86.6°, which is 1.2° below normal, and ranks as the 42nd
coolest July to date. The average high temperature of 98.4°
ranks as the 24th coolest on record. With the monsoon
being active, overnight cloud cover has kept daily lows on the warm
side. In fact, the average low temperature of 74.8° ranks as the
36th warmest on record
county - Most of the area has recorded between 1"-2". Picacho
Peak total of 1.33" is almost an inch above normal for the monsoon.
However across the far SE corner of the county, in areas from Saddlebrooke
to Oracle, amounts are much higher ranging from 2"-5" with higher
amounts of 6"-8" above 4500'.
Santa Cruz county
- Rainfall totals range from 1.5" to 5" with the highest amounts
being recorded east of an Elgin to Patagonia to Rio Rico line. Nogales
International Airport has recorded 4.19", with normal to date being
- Thunderstorm activity has been hit or miss across the county with totals
ranging from 0.50" to 1.25" with localized amounts of 2"-3",
especially across the southwest part of the county..
county - Thunderstorm activity has been more numerous across the northern
part of the county. Rainfall totals have been less than 1" across southern
half of the county.
- Feast or famine across the county with the southwest part of the county
seeing the most rain, while across the southeast part of the county the
monsoon has been mostly absent. In Sierra Vista, rainfall amounts ranged
from 1.5"-4" while further south and in the Huachuca mountains,
rainfall amounts ranged from 3"-6" with locally higher amounts
near 8". This obviously has brought flash flooding to the Monument
burn scar area. Across the northern half of the county, rainfall amounts
ranged from 1"-3". The southeast part of the county has been
the Monsoon loser so far with totals ranging from 0.50"-1.50".
Douglas airport has recorded just under three-quarters of an inch /0.74"/
which is almost an inch below normal. This would rank as the 21st driest
June 15 to July 16th period on record.
central and western Pima county. Based on radar estimate rainfall,
amounts across central Pima county range from 1"-3" with highest
amounts south of Sells, while across western Pima county totals ranged from
0.25" to 1.50".
for another update to Monsoon 2012 rainfall around August 15th or earlier
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Tucson Weather Forecast Office
520 North Park Ave, Suite 304
Tucson, AZ 85719
Tel: (520) 670-6526
Freedom of Information Act