August 2014 Statewide Summary

Alaska Statewide Climate Summary

August 2014

 

Temperature

 

August 2014 temperatures were decidedly above normal across the state, with 17 of the 19 First Order Stations reporting positive deviations, and just two recording below normal. Calculating the mean daily temperatures of the 19 First Order Stations (see Figure), 28 days of the month were above the 30-year normal. Only the last three days of the month were below normal. The peak deviation (5.4°F) occurred on the 10th. The monthly mean temperature of all First Order Stations was 55.6°F, 2.3°F above the normal of 53.3°F. This is 0.7°F above the August of 2013 mean of 54.9°F. Kotzebue held the greatest positive deviation from normal for August at a significant 6.7°F above its long-term mean of 51.7°F. Stations following Cold Bay with positive deviations equal to or exceeding 4°F were: Nome (5.6°F), Cold Bay (4.3°F), Homer (4.1°F) and St Paul (4.0°F). All stations with positive deviations were coastal stations. The only two stations with negative deviations from normal were Barrow (-1.3°F) and Talkeetna (‑0.5°F).

 

The warmest temperature reported for the First Order Stations was 80°F at Fairbanks on the 11th. The coldest temperature was 24°F at Bettles on the 30th. Barrow reported the lowest August mean temperature at 37.7°F, while Annette reported the highest mean temperature for the month at 60.7°F.

 

Station

Temperature

Observed
(°F)

Normal
(°F)

Delta
(°F)

Anchorage

57.4

56.7

0.7

Annette

60.7

58.9

1.8

Barrow

37.7

39.0

-1.3

Bethel

56.8

53.5

3.3

Bettles

54.6

52.5

2.1

Cold Bay

56.4

52.1

4.3

Delta Junction

56.3

54.8

1.5

Fairbanks

59.1

56.1

3.0

Gulkana

53.7

53.5

0.2

Homer

58.0

53.9

4.1

Juneau

56.8

55.9

0.9

King Salmon

57.2

54.6

2.6

Kodiak

56.3

55.2

1.1

Kotzebue

58.4

51.7

6.7

McGrath

57.0

54.6

2.4

Nome

55.7

50.1

5.6

St. Paul Island

52.8

48.8

4.0

Talkeetna

56.2

56.7

-0.5

Yakutat

54.6

53.8

0.8

 

 

 

Description: First Order Temperature

Daily mean temperature deviation from the normal temperature for the mean of the first order stations for August 2014.

 

A fair number of record temperature events were reported for August, and all were high events, tracking with the general trend for the month. St. Paul had eleven new, or tied, high temperatures days in August, nearly a third of the month, stretching throughout the month form the 1st to the 31st. In addition, St Paul had 17 high minimum events in August (not shown). Kotzebue had four high events during the first half of the month. While Cold Bay only had three high events, it also recorded nine high minimum events (not shown).

 

 

Temperature Records

Date

Station

Element

New
Record

Old
Record

Year of
old Record

08/01/14

St. Paul

High Temperature

60

60

1970

08/04/14

St. Paul

High Temperature

59

58

2005

08/09/14

Kotzebue

High Temperature

73

72

2005

08/10/14

Kotzebue

High Temperature

75

70

2003

08/11/14

Nome

High Temperature

72

77

1960

08/12/14

Kotzebue

High Temperature

74

74

1960

08/15/14

Kotzebue

High Temperature

73

72

2005

08/16/14

St. Paul

High Temperature

59

59

1989

08/17/14

St. Paul

High Temperature

59

58

2005

08/18/14

Cold Bay

High Temperature

64

62

2004

08/18/14

St. Paul

High Temperature

58

56

1995

08/19/14

Cold Bay

High Temperature

66

65

2004

08/19/14

St. Paul

High Temperature

58

57

1977

08/21/14

Cold Bay

High Temperature

65

65

1978

08/21/14

Port Alexander

High Temperature

72

72

2004

08/21/14

Sitka

High Temperature

71

71

2004

08/21/14

St. Paul

High Temperature

59

58

2004

08/21/14

St. Paul

High Temperature

60

59

1969

08/22/14

Annette

High Temperature

78

77

1945

08/28/14

St. Paul

High Temperature

59

58

1979

08/30/14

St. Paul

High Temperature

57

56

2010

08/31/14

St. Paul

High Temperature

59

56

2005

 

 

Precipitation

 

The overall precipitation calculated as the mean of the deviations in percentage of the First Order Stations was just 2% below normal. Ten of the 19 First Order Stations and 18 days of the month reported below normal values. The greatest daily deviation of 129% occurred on the 17th, a day with heavy precipitation in southern portions of the state. On a monthly basis, Yakutat had the greatest positive deviation from normal, with a total of 23.17", or 165% of the expected amount of 14.07". Stations following Yakutat, with values at or above 130% of normal, were Kodiak (151%), Juneau (149%), Delta Junction (132%) and St Paul (130%). Leading the stations with lower than normal precipitation totals were Talkeetna with 43%, and Barrow with 50% of normal.

 

Station

Precipitation

Observed
(in)

Normal
(in)

Delta
(in)

Delta
(%)

(%)

Anchorage

2.60

3.25

-0.65

-20%

80%

Annette

5.93

6.96

-1.03

-15%

85%

Barrow

0.53

1.05

-0.52

-50%

50%

Bethel

2.02

3.25

-1.23

-38%

62%

Bettles

1.74

2.64

-0.90

-34%

66%

Cold Bay

3.25

3.68

-0.43

-12%

88%

Delta Junction

2.49

1.89

0.60

32%

132%

Fairbanks

2.29

1.88

0.41

22%

122%

Gulkana

1.96

1.80

0.16

9%

109%

Homer

2.96

2.34

0.62

26%

126%

Juneau

8.53

5.73

2.80

49%

149%

King Salmon

3.51

2.95

0.56

19%

119%

Kodiak

6.90

4.56

2.34

51%

151%

Kotzebue

1.51

2.18

-0.67

-31%

69%

McGrath

1.73

2.80

-1.07

-38%

62%

Nome

1.71

3.22

-1.51

-47%

53%

St. Paul Island

4.00

3.07

0.93

30%

130%

Talkeetna

2.19

5.11

-2.92

-57%

43%

Yakutat

23.17

14.07

9.10

65%

165%

 

 

Description: First Order Precipitation

Daily mean precipitation deviation from the normal for the first order stations for August 2014.

 

 

The maximum monthly precipitation total reported for the First Order Stations was 23.17" at Yakutat, and Yakutat also reported the highest daily total of 4.07" on the 14th. The highest one-day snowfall occurred at Barrow on the 29th with 0.3Ó, and Barrow also reported the highest monthly snowfall of 0.5", and was the only First Order Station this month to report any snow.

 

Despite the slightly lower than normal precipitation reported for August for most stations, there were a fair number of daily precipitation records, and most were set during the middle of the month in the Southeast. Skagway Airport broke a record set back in 1928. The 1.53" that fell in Juneau on the 10th was the wettest August day since August 30th, 1987 when 1.82" fell.

 

 

Precipitation Records

Date

Station

Element

New
Record

Old
Record

Year of
old Record

08/01/14

Bethel

Precipitation

0.53

0.40

1958

08/01/14

Fairbanks

Precipitation

0.89

0.42

1938

08/06/14

St. Paul

Precipitation

0.92

0.44

1961

08/09/14

Haines Airport

Precipitation

0.97

0.84

1990

08/09/14

Juneau

Precipitation

0.99

0.80

1990

08/09/14

Ketchikan

Precipitation

4.50

3.20

1967

08/09/14

Petersburg

Precipitation

1.97

1.73

1967

08/10/14

Annex Creek

Precipitation

4.14

1.15

1983

08/10/14

Auke Bay

Precipitation

1.98

1.11

1983

08/10/14

Craig

Precipitation

1.44

0.98

2009

08/10/14

Haines Airport

Precipitation

1.03

0.55

1976

08/10/14

Juneau

Precipitation

1.53

1.04

1944

08/10/14

Petersburg

Precipitation

3.27

0.83

1955

08/10/14

Port Alexander

Precipitation

5.19

2.30

1996

08/10/14

Sitka

Precipitation

3.45

0.92

1958

08/10/14

Skagway Airport

Precipitation

0.62

0.53

1928

08/11/14

Hollis

Precipitation

1.27

0.61

2009

08/15/14

Skagway Airport

Precipitation

0.51

0.46

2003

08/15/14

Yakutat

Precipitation

4.07

3.44

2003

08/17/14

Port Alexander

Precipitation

4.43

2.19

2009

08/18/14

Delta Junction

Precipitation

0.74

0.70

1941

08/18/14

Hollis

Precipitation

1.25

0.66

1952

 

 

Description: Figure 3

This infrared satellite image from the National Weather Service shows weather pattern affecting the Interior portions of Alaska on August 1st, 2014. The storm resulted in heavy rainfall across the region.

 

 

Newsworthy Events

 

Like July, the month started off with a record rainfall in Fairbanks on the 1st, and heavy rain across the Interior for the 1st and 2nd. The months long heavy rainfall in the Interior areas manifested itself in different ways such as flooding the basements of the tallest building in Fairbanks and the Fairbanks Memorial Hospital, as well as septic tanks throughout the city. The tally for Fairbanks for the summer was 11.63", highest summer total on record, breaking the 1930 total of 11.59", and greater than the normal annual precipitation for Fairbanks of 10.81". All the rain across the state, and especially in the interior, resulted in the quietest fire season since 2004. Juneau had record rainfalls on the 8th and 10th, which generated some minor flooding. Frost warnings were issued for parts of the Fairbanks area on the 23rd. Frost was more widespread in the Interior on the 30th and 31st with Beaver dropping down to 19°F on the 31st.

 

This information consists of preliminary climatological data compiled by the Alaska Climate Research Center, Geophysical Institute, University of Alaska Fairbanks. For more information on weather and climatology, contact the center at 907-474-7885 or visit the center web site at http://akclimate.org. Please report any errors to webmaster@akclimate.org. This summary is based on the 19 first order stations in Alaska operated by the National Weather Service. Extreme events of other stations are also mentioned.