MONTHLY CLIMATOLOGICAL SUMMARY for DECEMBER 2012

DATA | STATISTICS | GRAPHS | CONDITIONS

CONDITIONS DAY of Month: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

                     
NAME: 3270 Nowell   CITY: West Juneau   STATE: Alaska 
ELEV:    97 ft  LAT: 58 17' 33" N  LONG: 134 25' 37" W


TEMPERATURE (F), RAIN  (in), WIND SPEED (mph), SNOW (in). Snowfall from 21:00 - 21:00, all others Midnight to Midnight.

                                      HEAT  COOL        AVG                      WIND       SNOW        
    MEAN                              DEG   DEG         WIND                DOM  RUN        ON(1)       
DAY TEMP  HIGH   TIME   LOW    TIME   DAYS  DAYS  RAIN  SPEED HIGH   TIME   DIR  (mi)  SNOW GRND WEATHER
-----------------------------------------------------------------------------------------------------------------------------------------------------
 1  18.0  20.6   3:00a  15.7   7:45p  47.0   0.0 TRACE   1.9  20.0   3:00a    E  45.76  0.8   3" IncrCds Cd OccGsts-LtWind Cd/XtmLtSnowToLtFineSn
 2  16.4  18.0   3:30p  14.9   2:00a  48.6   0.0 TRACE   1.6  21.0   1:35p    E  37.65  1.4   4" Cd-MnlndVarObsc/XtrmLtSnToLtVryFineSn LtWind-FewGsts 
 3  18.4  23.6  11:35p  16.1  12:05a  46.6   0.0  0.07   0.4  15.0   9:05p    E   8.63  3.0   7" Cld-MnlndVarObsc/Sn-LtSn-XtmLtToVryLtSnWithLull Cld
 4  21.6  24.7   1:50a  20.2  12:40a  43.4   0.0 TRACE   1.0  24.0   4:55a   NW  23.24 TRCE   6" Cd-SnFlurr Cd-FltBrks M/PCd Cd-Brks Cd-OccHntsBlu Cd
 5  23.9  26.0   2:45p  21.4   1:05a  41.1   0.0  0.02   0.4  13.0  10:50p    S   8.43  1.3   7" Cd Cd-FewTinyFiltBrks/SnShr Cd Cd/ExtrmLtSntoSn
 6  25.9  27.8  12:40p  23.9   4:30p  39.1   0.0  0.08   0.5  10.0  12:05a  SSE  10.88  2.8   9" Cd Cd/Sn Cd Cd/VryLtSnToSn Cd-Brks Cd-ThnrCds Cd
 7  24.9  27.8   1:20a  22.9  11:10p  40.1   0.0 TRACE   0.2  15.0   1:25a  SSE   4.86  0.2   8" Cd Cd/XtmLt-VryLtSn Cd-Brks Cd Cd/OccXtmLtSnToVryLtS
 8  24.9  29.5  11:35p  22.2  12:50a  40.1   0.0  0.18   0.4   9.0   4:15p  SSE   8.48  1.8   9" Cd/SltSn Cd-SomeHintsBrks&OfBlue Cd Cd/VryLtSnToSn
 9  33.5  37.8  11:35p  28.2  12:45a  31.5   0.0  0.46   1.1  11.0   8:10a  SSE  26.80  4.3  11" Cd/Sn Cd/XtmLtSnToSn-Lulls Cd Cd/VryLtSpToRn-Lull Cd
10  35.9  38.3  10:25a  32.9  11:15p  29.1   0.0  0.68   1.0  14.0   6:10a  SSE  23.45  0.0   7" Cd Cd/XtmLt-VryLtSp Cd Cd/SpToRn&R-Drz LoCds/Rn Cd/R 
11  30.7  34.7   7:20a  24.2  11:05p  34.3   0.0  0.02   0.5   9.0   5:00a    W  12.90 TRCE   7" Cld/Rn-Sn/Sn M/PCd Cd/MCd PCd Clr/MClr Clr Frost
12  31.2  35.9  11:05p  24.2  12:10a  33.8   0.0  0.34   1.0  18.0  11:05p  SSE  23.43  1.1   8" Cd Cd/XtmLtSnToS/VryLt&LtRn-Sn&Sn-Rn/Sn-VryLtR-Drz-R
13  35.6  37.6   1:45p  34.4   5:20a  29.4   0.0  0.30   0.8  11.0   1:40p  SSE  18.89  0.0 MISS Cd/R OccBrks/OccVryLtR-Sp/R-Sn Cd/Sp-Hail-VryLtR-Drz
14  35.8  36.9  10:10p  34.7  12:05a  29.2   0.0  0.68   2.9  20.0   6:20p  SSE  68.40  0.0   6" Cd-Brks Cd Cd/Mst-VryLtDrz-VryLtRn-Drz-Rn Lt-BrzyWnd
15  35.5  37.3   1:40a  32.7  11:10p  29.5   0.0  0.36   1.5  17.0  12:30a  SSE  35.18  0.0   5" Cd/Rn-VryLtR-Lt-XtmLtSpW/Lull Cd-OccBrks/SpShr Cd/Sn
16  32.2  33.8   1:55a  29.0  12:00m  32.8   0.0  0.23   0.2  10.0  11:45p  SSE   4.88  3.5   8" Cd Cd/VarSn/VryLtS-R FewTnyBrks Cd/SnShr MCd OccBrks
17  20.5  29.3  12:10a  12.1  11:40p  44.5   0.0  0.00   1.0  11.0   5:20p  WSW  23.09  0.0   8" DecrCd Clr/MClr Clr MClr/PCd M/PCd PCd PCd/MClr Clr
18  14.9  24.7  12:00m  11.9   1:00a  50.1   0.0  0.00   0.7  18.0  11:35p    W  15.30  0.0   8" Clr MClr/PCd VarMCd-Cd PCd Clr VarMClr-PCd PCd
19  25.8  27.2   1:05p  23.5  12:55a  39.2   0.0  0.00   4.4  28.0   1:30p    E 106.40  0.0   7" IncrCd Cd Lt-Brzy-Gsts Cd-VarBrks MCd PCd Cd/MCd Cd
20  20.8  24.1  12:05a  13.8   7:50p  44.2   0.0  0.00   1.6  22.0   1:10a    E  38.44  0.0 MISS Cd/MCd Cd SnBloMtns PCd PCd/MClr PCd MCd Cd-Brks Clr
21  17.1  18.8   8:35p  13.6   7:00p  47.9   0.0  0.00   2.2  22.0   8:40p    E  52.76  0.0   6" Clr OccLtWnd PCdwVryThn-ThnshCd SnBloMtns Clr Lt-Brz
22  16.2  18.3   9:40p  14.4   4:55a  48.8   0.0  0.00   4.7  25.0   8:15a    E 113.95  0.0   6" Clr Lt-Brz-Gsts MClr Cd M&PCdwThnThnsh Cd PCdMClr Cd
23  17.0  18.3  12:30a  14.4   3:05p  48.0   0.0  0.00   2.0  26.0   2:50a   NE  47.57  0.0   6" Cd LtWnd-OccGsts M/PCd Cd-Brks PCd Cd-ThnnerAreas Cd
24  19.1  23.6  11:25p  14.8   5:15p  45.9   0.0 TRACE   0.8  22.0  11:20p  WSW  19.27  0.2   6" Cd/SnShr Cd-Brks DecrCd Clr PCd&M/PCdw/VryThnToThnsh
25  18.4  23.3  12:25a  15.2   8:05a  46.6   0.0  0.00   0.7  13.0   2:15a  WSW  17.31  0.0   6" Clr PCd-VryThnToThnsh Var:MCd/MCd-Cd/PCd PCd Clr
26  13.6  16.4   2:00a  11.1  10:15p  51.4   0.0  0.00   0.5   6.0  12:30a    W  12.74  0.0   6" Clear
27  23.0  30.9  11:55p  11.4  12:30a  42.0   0.0  0.15   0.6  10.0   2:35p  SSE  13.59  2.6   9" IncrCld Cld Cld/ExtrmLtSnToSn-WithaLull Cld
28  31.3  32.2   9:00a  30.3  12:30a  33.7   0.0  0.35   0.0   6.0  12:20a  SSE  *0.73+ 6.0  14" Cd/VryVryLtSnToSn-2Lulls Cd/XtmLtSpr&VryLtMst-Drz Cd
29  34.0  37.0   9:05p  31.3  12:05a  31.0   0.0  0.11   0.9  13.0   4:25p  SSE**21.67+ 0.0  11" Cd Cd/XtrmLtSpr-VryLtMst-Spr Cd Cd/SprToRn Cd/OccSpr
30  36.7  37.8   8:30a  35.0   9:40p  28.3   0.0  0.52   1.4  11.0   2:55a  SSE  32.62  0.0   7" Cld-LoCldsOnce/Rn-VryLtRn-LtRn/Spr-VryLtRn
31  36.7  38.9   4:45p  34.6   6:40a  28.3   0.0  0.10   0.4   9.0  11:50a  SSE  10.36  0.0   6" Cd-LoCds/SpToRn Cd-VarTnyBrks Cd/XtmLtSp-Sp Cd/FewSp
-----------------------------------------------------------------------------------------------------------------------------------------------------
    25.5  38.9    31    11.1    26  1225.5   0.0  4.65   1.2  28.0    19    SSE 887.66+ 29.0

(1) As measured on Front Lawn
* 12/28: Wind Direction Vane and Anemometer Frozen much of the time - though there was little wind anyway.
** 12/29: Wind Direction Vane and Anemometer Frozen until about 0810. 
STATISTICS | DATA | GRAPHS | CONDITIONS - DAY of MONTH: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31| TOP 
AVERAGE Mean Temp:	25.5
AVERAGE High Temp:	28.7
MINIMUM High Temp:	16.4	26th
MAXIMUM High Temp:	38.9	31st
AVERAGE Low Temp:	22.1
MINIMUM Low Temp:	11.1	26th
MAXIMUM Low Temp:	35.0	30th
LOWEST Wind Chill Temp: 1.0	22nd @ 0819 (based on 10 minute Average Wind Speed)
		
MAX >= 90.0:		0
MAX >= 80.0:		0
MAX >= 70.0:		0
MAX <= 32.0:		19	All but: 9th, 10th, 11th, 12th, 13th, 14th, 15th, 16th, 28th, 29th, 30th, 31st
MIN <= 32.0:		25	All but: 10th, 13th, 14th, 15th, 30th, 31st
MIN <=  0.0:		0
		
MAXIMUM Humidity (%):	96	31st @ 1055
MINIMUM Humidity (%):	34	22nd @ 0135
		
MAXIMUM Pressure (mb):	1026.0	31st @ 1844
MINIMUM Pressure (mb):	978.0	15th @ 0414
		
TOTAL   Htg Deg Days:	1225.5
AVERAGE Htg Deg Days:	39.5
MINIMUM Htg Deg Days:	28.3	30th, 31st
MAXIMUM Htg Deg Days:	51.4	26th
TOTAL Cool Deg Days:	0.0
Heat Base:  65.0  Cool Base:  65.0  Method: Integration
		
TOTAL   Precip.:	4.65
AVERAGE Precip.:	0.21
DAYS of Precip.:	22	All but: 17th, 18th, 19th, 20th, 21st, 22nd, 23rd, 25th, 26th
MAXIMUM Precip.:	0.68	10th
MAXIMUM Rain Rate:	0.15	9th @ 1238
Days of Rain: 17 (>.01 in) 12 (>.1 in) 0 (>1 in)
TOTAL Snowfall:		29.0
DAYS of Snowfall:	15	1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 11th, 12th, 16th, 24th, 27th, 28th
		
AVERAGE High Wind:	15.5
MINIMUM High Wind:	6	26th, 28th
MAXIMUM High Wind:	28	19th
WIND RUN (miles):	887.66
		
DAYS Full Sun at any time:	11	(On Mainland Only): 4th, 6th, 11th, 17th, 18th, 20th, 21st, 23rd, 24th, 25th, 26th
DAYS Extrm. Weak to Weakened Sun:	5	(On Mainland Only): 7th, 13th, 19th, 22nd, 31st
DAYS OF Cld or M Cld:	29	All but: 17th, 26th
DAYS OF Rainbow:	0
DAYS OF Aurora:		0
DAYS OF Lightning:	0
DAYS OF Earthquake:	0



GRAPHS | DATA | STATISTICS | CONDITIONS - DAY of Month: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | TOP

December 2012 - Barometric Pressure & Temperature with Highs & Lows.

December 2012 - Dewpoint & Humidity.

December 2012 - Rainfall & High Rain Rate with Pressure & Humidity.

December 2012 - High Wind, Wind Run, & 10 min. Avg. Wind Speed.



CONDITIONS - DAY of Month: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | DATA | STATISTICS | GRAPHS | TOP

Mon. 12/31/12: DATA | NWS: Record Daily Rainfall across the northern Panhandle on Sunday, December 30 - See 0515 Below

SUNDAY 12/30/12: DATA | NWS: Record Daily Rainfall across the northern Panhandle on Sunday, December 30 - See 0515 12/31 Above

Sat. 12/29/12: DATA

Fri. 12/28/12: DATA

Thur. 12/27/12: DATA | 1658: NWS: Winter Weather Advisory is Cancelled - See 1658 Below | 2013 Juneau Tide Tables are now available temporarily at: http://westjuneau.com/weather/2013tides/tidesjuneau_year.htm; on January 1st, 2013 they will be at the normal address

Wed. 12/26/12: DATA

Tue. 12/25/12: DATA | Christmas Day - The birth of our Lord and Savior Jesus Christ - Merry Christmas!

Mon. 12/24/12: DATA | Christmas Eve

SUNDAY 12/23/12: DATA | 4th Sunday in Advent | 1041: A flock of Pine Siskins is in the neighborhood

Sat. 12/22/12: DATA

Fri. 12/21/12: DATA | First Day of Winter - Winter Solstice was at 2:12 AM AST | NWS: High Wind Warning was Cancelled at 9:49 PM AST 12/20 - See 2149 12/20 Below

Thur. 12/20/12: DATA | NWS: High Wind Warning remains in effect until 9 AM AST Friday - See 1936 Below | Winter Begins Tomorrow - Winter Solstice: 2:12 AM AST, December 21st

Wed. 12/19/12: DATA | 1849: NWS: High Wind Warning in effect until 5 AM AST Thursday - See 1849 Below

Tue. 12/18/12: DATA

Mon. 12/17/12: DATA

SUNDAY 12/16/12: DATA | 3rd Sunday in Advent

Sat. 12/15/12: DATA

Fri. 12/14/12: DATA | Eaglecrest Ski Area: Hooter and Blackbear Chairlifts to open today

Thur. 12/13/12: DATA

Wed. 12/12/12: DATA

Tue. 12/11/12: DATA | 1553: NWS Dense Fog Advisory now in effect until Midnight AST tonight - See 1553 Below - Advisory was Cancelled at 2206 | Governor's Mansion Open House from 3 - 6 PM today

Mon. 12/10/12: DATA

SUNDAY 12/09/12: DATA | Second Sunday in Advent | 0457: The National Weather Service in Juneau has Cancelled the Winter Storm Warning - See 0457 Below

Sat. 12/08/12: DATA | 1613: NWS: Winter Storm Warning now in effect from 6 PM until Noon AST Sunday - See 1613 Below

Fri. 12/07/12: DATA | Pearl Harbor Day | 1602: NWS: Winter Storm Watch in effect from Saturday evening through Sunday morning - See 1602 Below

Thur. 12/06/12: DATA | 1541: NWS: Strong front bringing snow and wind followed by rain for the weekend - See 1541 Below | 0450: NWS: Winter Weather Advisory will expire at 5 AM AST early this morning - See 0450 Below

Wed. 12/05/12: DATA | 1521: NWS: Winter Weather Advisory for Snow in effect from 6 PM this evening to 5 AM Thursday - See 1521 Below

Tue. 12/04/12: DATA

Mon. 12/03/12: DATA | NWS Summary of November 2012 Weather at the Juneau International Airport - See Below

SUNDAY 12/02/12: DATA | First Sunday in Advent | 1549: Winter Storm Warning will expire at 4 PM AST this afternoon - See 1549 Below

Sat. 12/01/12: DATA | NWS: Winter Storm Warning for Snow remains in effect until 4 PM AST Sunday - See 2052 Below | 0439: High Wind Warning, which at 11:50 PM 11/30 had been extended to 5 AM AST today, is cancelled - See 0439 Below | Eaglecrest Ski Area opens today on a limited basis (Porcupine Lift)