STATION: TANANA-RALPH M CALHOUN MEML ARPT (PATA), AK
CLIMATOLOGICAL SUMMARY. Period of Record: Nov 1999 to Dec 2008
Summaries based on unedited daily ASOS data. Errors may be present.
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TEMPERATURE (F) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
| |
Avg Max Temp | 2.2 10.7 17.7 38.8 58.4 70.4 69.9 64.0 51.6 30.8 11.4 3.7 | 35.8
Avg Min Temp | -15.2 -7.7 -6.8 15.1 33.2 45.3 48.1 42.4 33.4 17.4 -3.6 -12.6 | 15.7
Avg Temperature | -6.5 1.5 5.4 26.9 45.8 57.9 59.0 53.2 42.5 24.1 3.9 -4.4 | 25.8
| |
Extremes: | |
Extreme Max Temp| 52 38 38 67 85 85 85 83 70 66 58 39 | 85
| |
Date of Ext-Day | 22 09 30 30 25 29 18 03 01 01 26 06 |
-Year| 2004 2003 2000 2005 2002 2004 2002 2002 2007 2003 1999 2001 |
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Extreme Min Temp| -58 -47 -48 -26 2 30 30 27 9 -19 -41 -59 | -59
| |
Date of Ext-Day | 02 12 01 01 03 03 28 30 29 27 28 30 |
-Year| 2000 2005 2006 2001 2001 2006 2000 2002 2004 2008 2005 1999 |
| |
Heating Degree Days | 2219 1795 1846 1142 596 219 194 367 675 1268 1833 2152 | 14308
Cooling Degree Days | 0 0 0 0 1 5 9 1 0 0 0 0 | 14
| |
Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
Max Temp >= 75 | 0.0 0.0 0.0 0.0 1.1 8.9 10.1 2.9 0.0 0.0 0.0 0.0 | 23.0
Max Temp <= 32 | 30.2 27.4 28.7 8.8 0.3 0.0 0.0 0.0 0.3 16.7 29.2 30.7 | 172.3
| |
Min Temp <= 32 | 31.0 28.2 31.0 27.7 15.1 0.5 0.2 2.6 12.9 29.1 30.0 31.0 | 239.3
Min Temp <= 20 | 30.6 27.0 30.6 15.8 1.4 0.0 0.0 0.0 2.7 15.9 28.3 30.8 | 183.1
Min Temp <= 0 | 23.8 17.8 20.0 6.4 0.0 0.0 0.0 0.0 0.0 4.2 18.2 24.2 | 114.6
| |
Avg Dew Point Temp | -4.7 -1.1 -2.4 15.7 30.4 45.0 49.0 46.0 35.4 19.3 -0.6 -4.9 | 18.9
Avg Wet Bulb Temp | -1.5 4.5 6.2 24.2 39.8 51.9 53.5 49.8 39.6 22.8 3.7 -0.9 | 24.5
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Avg Sea Level Pres | 30.21 30.12 30.16 30.07 30.01 29.93 29.87 29.94 29.98 30.05 30.05 30.15 | 30.05
(Inches of Mercury) | |
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WEATHER | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
See disclaimer below| |
| |
Avg Number of Days: | |
Thunderstorms | 0.0 0.0 0.0 0.0 0.4 3.4 2.0 0.3 0.0 0.0 0.0 0.0 | 6.2
Heavy Fog | 1.1 0.6 0.1 1.3 0.3 0.3 0.1 2.0 2.4 1.0 0.8 0.6 | 10.7
Fog | 14.9 10.2 6.1 5.1 6.0 6.8 11.3 15.2 11.2 12.7 12.7 11.3 | 123.5
Hail | 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.1 0.0 0.0 | 0.3
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PRECIPITATION (In) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Average Monthly | 0.12 0.21 0.20 0.42 0.72 1.55 1.71 2.00 1.38 0.56 0.25 0.12 | 9.23
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Maximum Daily | 0.36 0.29 0.28 0.77 0.47 1.36 0.78 1.15 0.85 0.83 0.47 0.20 | 1.36
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Date of Ext-Day | 18 08 22 26 06 07 25 15 24 30 10 21 |
-Year| 2003 2003 2000 2002 2004 2003 2002 2001 2005 2006 2000 1999 |
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Avg Number of Days: | |
>= 0.01 | 2.4 3.2 2.2 4.2 7.2 10.5 12.6 12.4 11.0 7.7 4.1 3.4 | 81.0
>= 0.10 | 0.2 0.7 0.9 1.3 2.2 3.6 4.9 6.8 4.7 1.3 0.6 0.5 | 27.7
>= 0.25 | 0.1 0.2 0.2 0.3 1.0 2.0 2.6 2.6 1.7 0.6 0.2 0.0 | 11.4
>= 0.50 | 0.0 0.0 0.0 0.1 0.0 0.9 0.8 0.7 0.3 0.1 0.0 0.0 | 2.9
>= 1.00 | 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.1 0.0 0.0 0.0 0.0 | 0.3
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WIND (MPH) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Daily Avg Wind Speed| 4.3 5.5 5.9 5.4 5.3 4.8 4.7 4.2 4.6 4.9 4.3 4.2 | 4.8
Daily Avg Max 2-Min | 12.5 14.5 14.1 14.0 14.5 13.9 13.1 11.8 12.0 12.2 12.1 12.5 | 13.1
Daily Avg Peak Gust | 16.0 18.6 18.2 17.9 18.6 18.3 17.4 15.4 15.5 15.7 15.3 16.0 | 16.9
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Maximum Daily Avg | 14.3 13.4 21.4 13.0 15.6 11.0 11.9 9.8 10.9 17.6 12.4 17.8 | 21.4
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Maximum 2-Minute Avg| 30 46 36 26 25 25 25 23 25 35 24 32 | 46
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Date of Max 2min-Day| 22 09 21 26 04 10 01 13 27 09 09 08 |
-Year| 2008 2002 2005 2002 2003 2001 2002 2004 2005 2006 2005 2008 |
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Maximum Peak Gust | 46 46 47 33 35 36 35 28 32 47 36 39 | 47
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Date of Max Gust-Day| 22 09 21 02 14 17 04 13 27 09 16 08 |
-Year| 2008 2002 2005 2001 2000 2005 2008 2004 2005 2006 2006 2008 |
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Avg Number of Days: | |
Peak Gust >=30 | 1.1 1.9 1.3 0.6 0.9 0.8 0.9 0.0 0.4 0.7 0.5 0.9 | 10.0
Peak Gust >=40 | 0.2 0.1 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 | 0.7
Peak Gust >=50 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
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Max 2-Minute >=30| 0.1 0.2 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 | 0.7
Max 2-Minute >=40| 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.1
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Observations of WEATHER may me innacurate due to early ASOS inconsistancies. Average days
with Thunderstorms may be low due to early mis-detection.
Heavy Fog = Visibility less than or equal to 1/4 mile.
Fog = Visibility greater than 1/4 mile or less than 7 miles.
Peak Gust = Maximum 5-second average.
Snowfall data not observed at ASOS stations.
Copyright ©2009 Western Regional Climate Center - Desert Research Institute - Reno, Nevada.