Excessive Heat Warning in effect through the weekend - Tucson News Now

Excessive Heat Warning in effect through the weekend

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TUCSON, AZ (Tucson News Now) -

An Excessive Heat Warning is in effect today, Saturday, and Sunday for parts of Pima, Pinal, Santa Cruz, Graham, and Greenlee counties. This includes the Tucson metropolitan area. The Warning also stretches into Phoenix and through the Colorado River Valley and into parts of California and Nevada.

To sum it up, it is going to be HOT! Hotter than any temperatures much of Arizona has seen in nearly 18 years. The red on the map below shows the extent of the Excessive Heat Warning.

According to the Tucson National Weather Service an Excessive Heat Warning means "a prolonged period of extremely hot temperatures is expected. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water."

The Tucson International Airport (TIA) is forecasted to hit temperatures above 110° on Friday and Saturday afternoon. The last time TIA (home to the official Tucson weather recording station) had an afternoon high of 113° was on July 27, 1995. The following day the high was 114°.

All-time record HIGH temperatures for
Tucson Arizona (1895-2012)
Top 15 occurrences
Rank
Temperature
Date/Year
1)
117°
June 26, 1990
2)
116°
June 29, 1994
3T)
115°
June 28, 1994
June 25, 1994
5T)
114°
July 28, 1995
July 4, 1989
June 22, 1988
8T)
113°
June 27, 1995
June 26, 1994
June 24, 1994
June 26, 1993
June 28, 1990
June 25, 1990
June 18, 1989
June 23, 1988

Source: Tucson National Weather Service

Although the temperatures are uncommon, the forecast numbers remain shy of record highs. The Tucson record high for Friday June 28 is 115°. On Saturday, the Tucson record is 116°. The all time record high for Tucson is 117°. That happened on June 26, 1990.  Check out the All-Time record highs for other Southeast Arizona locations below.

Source: Tucson National Weather Service

But, Tucson could set another kind of record as the month of June wraps up for the year. 100° or higher temperatures are in the forecast through the end of June. That means every afternoon in June will have hit at least 100°. If that happens, it is the first time in Tucson history. 

However, Tucson is not breaking any records for consecutive 100° days just yet. The record is 39 days in a row. That happened in 2005 from June 14 through July 22. It also happened in 1987 from June 6 through July 14. 

Longest consecutive streaks of 100 degrees or greater Longest consecutive streaks of 100 degrees or greater by decade
Rank Days (Year/dates)
1T 39: (2005 / June 14 - July 22)
39: (1987 / June 6 - July 14)
3 37: (2007 / June 13 - July 19)
4 33: (2002 / June 12 - July 14)
5 32: (1942 / June 13 - July 14)
6T 30: (1994 / July 31 - Aug. 29)
30: (1946 / June 3 - July 2)
30: (1936 / June 8 - July 7)
9 29: (1901 / June 22 - July 20)
10T 27: (2013 / June 1 - June 27)
27: (1989 / June 13 - July 9)
27: (1903 / June 17 - July 13)
13 26: (1948 / June 24 - July 19)
14 25: (1994 / June 22 - July 16)
15 24: (1924 / June 10 - July 3)
16 23: (1980 / June 8 - June 30)
17T 22: (2012 / June 11 - July 2)
22: (2003 / June 25 - July 16)
22: (2000 / July 15 - Aug. 5)
22: (1997 / June 17 - July 8)
22: (1995 / July 21 - Aug. 11)
22: (1993 / June 11 - June 2)
22: (1974 / June 10 - July 1)
22: (1917 / June 12 - July 3)
25T 21: (1992 / June 17 - July 7)
21: (1991 / June 15 - July 5)
21: (1925 / July 6 - July 26)
21: (1915 / June 15 - July 5)
21: (1908 / June 19 - July 10)
30 20: (1985 / June 27 - July 16)
   

The longest consecutive streak for 2013 has been 27days.

as of June 27th
 
Since 1895, Tucson has recorded streaks of 14 days or longer 74 times.
 
Since 1895, Tucson has recorded streaks of 10 days or longer 142 times.
2010s
Days Year/dates
27 2013 / June 1 - June 27
2000s
Days Year/dates
39 2005 / June 14 - July 22
1990s
Days Year/dates
30 1994 / July 31 - Aug. 29
1980s
Days Year/dates
39 1987 / June 6 - July 14
1970s
Days Year/dates
22 1974 / June 10 - July 1
1960s
Days Year/dates
17 1960 / June 16 - July 2
1950s
Days Year/dates
19 1957 / June 18 - July 6
1940s
Days Year/dates
32 1942 / June 13 - July 14
1930s
Days Year/dates
30 1936 / June 8 - July 7
1920s
Days Year/dates
24 1924 / June 10 - July 3
1910s
Days Year/dates
22 1917 / June 12 - July 3
1900s
Days Year/dates
29 1901 / June 22 - July 20
1890s
Days Year/dates
19 1895 / June 20 - July 8

Source: Tucson National Weather Service

The most 100° days in a year is 99. That happened back in 1994. For more 100s information click here.

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