MONTHLY CLIMATOLOGICAL SUMMARY for DECEMBER 2010

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  25.1  26.6  12:05a  24.1   6:20p  39.9   0.0 TRACE   1.0  20.0   4:20a  WSW  23.78  0.2   8" Cd/Sn FewBrks-HntsBlu Cd/VryLtSnShr Cd/MCd FewBrk Cd
 2  22.9  26.7  12:10p  16.1  11:45p  42.0   0.0 TRACE   0.7  13.0  12:50p  WSW  17.64  0.3   7" Cd/Sn Cd Brks-HntsBrks&Blu ClrSpots Clr Clr/MClr PCd 
 3  20.9  30.0  10:35p  14.0   7:40a  44.1   0.0  0.02   0.8  14.0  11:00p    W  19.15  1.1   8" Clr Cld/MCld Cld-VrySm-TnyBrk Cd Cd/ExtrmLtSnToSn Cd
 4  35.5  38.6  12:00m  29.7  12:05a  29.5   0.0  0.46   3.1  23.0   7:50a  SSE  73.87  0.3   5" Cd/Sn Cd/Rn-Sn/Spr-VryLtRn-Mst-LtRn-Rn OccLt-BrzyWnd
 5  35.3  40.9   6:50a  27.9  10:55p  29.7   0.0  0.03   0.7  17.0   6:55a  SSE  16.28  0.0   4" Cd/Rn Cd Cd/Spr Cd-SomeBrks PCd MClr/PCd MClr Clr
 6  32.3  35.6  11:00a  29.3  12:05a  32.7   0.0  0.00   0.7   9.0   6:20p  WSW  16.63  0.0   3" Cld LtFrst FewVryTnyBrks Cd Cd-Brks PCd Clr/MClr Clr
 7  37.0  44.1   8:45p  32.4  12:20a  28.0   0.0  0.00   1.9  26.0   9:50p  WSW  45.16  0.0   3" Cd Brks MCd PCd MClr ThinCds Cd MCd MClrPCd Cd LtWnd
 8  35.9  42.9  12:50a  31.0  12:00m  29.1   0.0 TRACE   3.4  30.0   1:50a    E  82.42  0.0   3" Cd/TrcRn Cd Cd/FewTnyFlakes MCd PCd VarMClr/PCd MClr
 9  27.8  31.0  12:05a  25.8  11:00p  37.2   0.0 TRACE   2.2  26.0   2:05a  NNE  53.25 TRCE   3" Cd Lt-Brz Cd/FewExtmSm-TnyFlksShrs Cd-SomeVarBrks Cd
10  26.9  29.3   9:00p  23.9   1:00a  38.1   0.0  0.01   0.2  13.0   6:50p  SSE   4.91  0.5   4" Cd/Sn Cd Cd/VryLtSnShr-FewFlakes Cd/XtmLtS-OccFewFlk
11  30.7  34.1  12:50p  28.7  12:05a  34.3   0.0  0.07   0.3  11.0   9:10a  SSE   7.88  2.3  6.0 Cld/ExtrmLt-VryLtSn-FineSn Cld Cld/VrytLtSnToSn Cld
12  28.9  31.0  12:05a  25.4   8:40a  36.1   0.0 TRACE   0.4  16.0  11:05p  WSW   8.36 TRCE   6" Cd P/MCd PCd Cd-Brks PCd Cd-Brks Cd Cd/FewTinyFlakes
13  26.4  29.1   1:50p  18.8  11:40p  38.6   0.0  0.06   0.4  13.0  12:05a  WSW   8.91  1.3  6.4 Cd Cd/Sn Cd Brks MCd Cd-VrySm-TnyBrks P/MCd Brks Clr
14  18.0  23.9  12:00m  16.2   4:30a  47.0   0.0  0.00   1.0  11.0  11:55p  WSW  22.63  0.0  6.0 Clr MClr Clr/MClr PCld-Clr FewCirrus MClr PCld
15  27.2  28.8   6:35a  21.3  12:50a  37.8   0.0 TRACE   9.0  34.0   4:35p    E 215.79 TRCE+ 4.5 Cd Brzy-Wndy Cd/XtmLtFineSn-VryVryLtSn MCd P/MCd MCd
16  26.7  27.6  12:10p  24.7  11:35p  38.3   0.0  0.00   4.6  29.0  12:50a    E 111.47  0.0  3.5 Cd Brzy-Gsts-LtWnd MCd HntsBlu VarM/PCd PCd MClr Clr
17  24.2  25.6   4:10p  23.0   7:55a  40.8   0.0  0.00   2.9  24.0  11:40a    E  70.19  0.0  3.5 Clr Lt-BrzWnd-Gsts Clr-FewCds PCd MClr Cd Sm-TnyBrks
18  20.2  24.7   9:35p  15.6   5:00p  44.8   0.0  0.00   1.4  22.0  10:40p    W  32.51  0.0  3.5 Clear Lt-BrzyWindLateEve
19  20.3  24.4  12:05a  10.4  11:35p  44.7   0.0  0.00   3.7  26.0  12:10a    E  89.12  0.0  3.5 Clear PeriodsLt-BrzyWind-Gusts
20  11.0  17.0   8:45p   8.3   8:10a  54.0   0.0  0.00   1.0  14.0   8:30p  WSW  23.54  0.0  3.5 Clr VarClrMClr PCd Clr PCd MCdToCdWithVryThn-ThnshCd
21  17.2  24.7  11:50p  11.6   5:30a  47.8   0.0  0.00   1.0  24.0  11:40p  WSW  24.79  0.0  3.5 PCd PCdMClr Clr/MClr PCd Brkn PCd SltBrk-Brks Cd/MCd
22  26.3  28.5  11:55a  20.8  11:50p  38.7   0.0 TRACE   5.0  29.0  10:15a   NE 119.09  0.0   3" CdMCd Wind MClr PCd CdMCd Brks Cd SnFlur DecrCd MClr
23  27.0  31.5   9:10a  21.1   1:15a  38.0   0.0 TRACE   2.8  25.0   2:50a   NE  68.09  0.0   3" Cd-OccWnd Cd/Wind FewFlake VarPCd/MClr Cd Cd/VryLtSn
24  24.5  29.5  12:20p  20.6   5:45a  40.5   0.0  0.01   1.6  20.0   9:35a  WNW  38.82  0.5   4" Cld/Sn Clr/MClr Cld Lt-Brzy Cld/XtmLtSnToFineSn Cld
25  28.8  31.9   5:30p  25.6  12:50a  36.2   0.0  0.02   0.3   8.0   8:50a  WSW   6.27  0.9   5" Cd/Sn Cd-TnyBrks Cd Cd/VryLtSn-Sn Cd/OccVryLtSn Cd
26  29.3  33.7  11:55a  25.1   2:10a  35.7   0.0 TRACE   0.5  10.0  10:35a    W  10.97 TRCE   4" Cd Cd/VryVryLtSn Cd-VarBrks Cd/MCd MCd Brks P/MCd Cd
27  30.4  31.9   2:30p  29.1   8:20a  34.6   0.0  0.15   0.4  10.0   2:40p  SSE   9.99  1.5   6" Cd/TraceSn Cd/ExtrmLtSnToSn Brks Cd/VarSn Brks Cd/Sn
28  26.9  30.7  12:35p  19.5  11:50p  38.1   0.0  0.08   0.3   6.0   3:55p    W   7.07  6.1  10" Cd/Sn Cd-OccTnyBrks Brks PCd M/PCd PCd MClr VarM/PCd
29  24.2  27.2   6:45p  17.2   2:25a  40.8   0.0 TRACE   0.7  11.0  10:25p  SSE  16.66  0.4   9" VarPCdToCd/MCd Cd ExtmLtSnShr Cd/Shrs:VryLtSn-Sn Cd
30  30.0  34.6  12:00m  26.6  12:05a  35.0   0.0  0.32   2.3  16.0   5:25p  SSE  55.29  5.8  14" Cld/VryLtSnowToSnow LtWind Cd/LtSn-Rn/VryLtRn-Sn
31  35.2  36.5   4:05p  33.8   7:30a  29.8   0.0  0.60   2.2  13.0   1:05a  SSE  53.89  0.0  10" LoCds-Cds/VryLtR-Sp-Rn Cd Cd/LtMst-Sp-VryLtR-R LtWnd
-----------------------------------------------------------------------------------------------------------------------------------------------------
    26.9  44.1     7     8.3    20  1181.9   0.0  1.83   1.8  34.0    15   WSW 1354.42 21.2

(1) As measured on Front Lawn 
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:	26.9
AVERAGE High Temp:	30.7
MINIMUM High Temp:	17.0	20th
MAXIMUM High Temp:	44.1	7th
AVERAGE Low Temp:	22.5
MINIMUM Low Temp:	8.3	20th
MAXIMUM Low Temp:	33.8	31st
LOWEST Wind Chill Temp: 3.6	20th @ 0145 (based on 10 minute Average Wind Speed)
		
MAX >= 90.0:		0
MAX >= 80.0:		0
MAX >= 70.0:		0
MAX <= 32.0:		22	All but: 4th, 5th, 6th, 7th, 8th, 11th, 26th, 30th, 31st
MIN <= 32.0:		29	All but: 7th, 31st
MIN <=  0.0:		0
		
MAXIMUM Humidity (%):	93	6th, 30th
MINIMUM Humidity (%):	29	17th @ 0456
		
MAXIMUM Pressure (mb):	1028.1	3rd @ 1429
MINIMUM Pressure (mb):	985.4	14th @ 0814
		
TOTAL   Htg Deg Days:	1181.9
AVERAGE Htg Deg Days:	38.1
MINIMUM Htg Deg Days:	28.0	7th
MAXIMUM Htg Deg Days:	54.0	20th
TOTAL Cool Deg Days:	0.0
Heat Base:  65.0  Cool Base:  65.0  Method: Integration
		
TOTAL   Precip.:	1.83
AVERAGE Precip.:	0.08
DAYS of Precip.:	22	All but: 6th, 7th, 14th, 16th, 17th, 18th, 19th, 20th, 21st
MAXIMUM Precip.:	0.60	31st
MAXIMUM Rain Rate:	0.15	27th @ 2335
Days of Rain: 10 (>.01 in) 4 (>.1 in) 0 (>1 in)
TOTAL Snowfall:		21.2
DAYS of Snowfall:	17	1st, 2nd, 3rd, 4th, 9th, 10th, 11th, 12th, 13th, 15th, 24th, 25th, 26th, 27th, 28th, 29th, 30th
		
AVERAGE High Wind:	18.2
MINIMUM High Wind:	6	28th
MAXIMUM High Wind:	34	15th
WIND RUN (miles):	1354.42
		
DAYS Full or Somewhat Weakened Sun any time on Mainland:	13	2nd, 5th, 6th, 7th, 8th, 17th, 18th, 19th, 20th, 21st, 22nd, 23rd, 28th
DAYS Extrm. Weak to Weakened Sun any time on mainland:		8	1st, 3rd, 8th, 9th, 12th, 13th, 16th, 26th
DAYS All Clear or Mostly Clear:	2	18th, 19th
DAYS OF Cld or M Cld:	28	All but: 14th, 18th, 19th
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 2010 - Barometric Pressure & Temperature with Highs & Lows.

December 2010 - Dewpoint & Humidity.

December 2010 - Rainfall & High Rain Rate with Pressure & Humidity.

December 2010 - 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

Fri. 12/31/10: DATA | Avalanche Control began on Mt. Roberts above Thane Road this morning at 10:38 AM - Thane Road was closed beginning at about 10 AM | 0303: The Winter Storm Warning was Cancelled by the NWS

Thur. 12/30/10: DATA | 2058: A Winter Storm Warning for Heavy Snow remains in effect until 5 AM AST Friday - See 1452 Below

Wed. 12/29/10: DATA | 1541: Winter Storm Watch in effect from Thursday morning through late Thursday night - See 1541 Below

Tue. 12/28/10: DATA

Mon. 12/27/10: DATA

SUNDAY 12/26/10: DATA

Sat. 12/25/10: DATA | Merry Christmas! ... Celebrating the birth of our Lord and Savior Jesus Christ

Fri. 12/24/10: DATA | Christmas Eve | Wind Advisory expired at Midnight last night - See 2342 12/23 Below

Thur. 12/23/10: DATA | 1535: Wind Advisory remains in effect until Midnight AST tonight - See 1535 Below

Wed. 12/22/10: DATA | 1832: The Wind Advisory remains in effect until Midnight AST Thursday - See 1832 Below

Tue. 12/21/10: DATA | Winter Solstice - 2:38 PM AST | Wind Advisory in effect until 4 PM AST Wednesday - See 1531 Below

Mon. 12/20/10: DATA

SUNDAY 12/19/10: DATA | Fourth Sunday in Advent | 1537: Wind Advisory remains in effect until Midnight AST tonight - See 1537 Below

Sat. 12/18/10: DATA | 2038: Wind Advisory is now in effect until Midnight AST Sunday night for south Douglas and downtown Juneau - See 2038 Below | Eaglecrest Ski Area opens for the season at 9 AM, Limited Runs

Fri. 12/17/10: DATA | 1529: The NWS Wind Advisory for downtown Juneau and south Douglas has been Cancelled - See 1529 Below

Thur. 12/16/10: DATA | 1442 (Posted here at 1555): Wind Advisory in effect until Midnight AST tonight for downtown Juneau and south Douglas - See 1442 Below

Wed. 12/15/10: DATA

Tue. 12/14/10: DATA

Mon. 12/13/10: DATA | 1303: The Winter Weather Advisory for Snow has been Cancelled by the NWS - See 1303 Below; The Winter Storm Warning for Heavy Snow has been Cancelled - See 0850 Below

SUNDAY 12/12/10: DATA | Third Sunday in Advent | 1929: The NWS has issued a Winter Storm Warning for Heavy Snow... which is in effect until 4 PM AST Monday - See 1929 Below, the Winter Storm Watch is no longer in effect | Winter Weather Advisory expired at Midnight last night

Sat. 12/11/10: DATA | A New Winter Weather Advisory for Snow, issued at 1720 by the NWS, is in effect until Midnight Tonight - See 1720 Below | The NWS at 1244 Cancelled the Winter Weather Advisory - See 1244 Below

Fri. 12/10/10: DATA | 1513: NWS Winter Weather Advisory in effect from 9 PM this evening to 4 PM AST Saturday - See 1513 Below

Thur. 12/09/10: DATA | Southeastern Alaska Earthquake - See 2042 Below - Quake was felt in Haines and Skagway, and by some people in Juneau and Douglas

Wed. 12/08/10: DATA | The NWS Wind Advisory was Cancelled at 0459 | Christmas Open House at the Governor's Mansion from 3 to 6 PM this afternoon

Tue. 12/07/10: DATA | Pearl Harbor Day | 1738: Wind Advisory remains in effect until 6 AM AST Wednesday - See 1738 Below

Mon. 12/06/10: DATA | 1752: Wind Advisory now in effect from Noon today to 10 PM AST Tuesday - See 1752 Below

SUNDAY 12/05/10: DATA | Second Sunday in Advent | Daily Precipitation Record set in Haines on Saturday, December 4, 2010 - See 1656 Below

Sat. 12/04/10: DATA | 2046: The NWS Wind Advisory is now in effect until Midnight AST tonight - See 2058 Below | 0434: The NWS Winter Weather Advisory is cancelled - See 0434 Below

Fri. 12/03/10: DATA | 1555: NWS Winter Weather Advisory for Snow remains in effect from 3 AM to 9 PM AST Saturday - See 1555 Below | The NWS Summary of November 2010 Weather - See Below

Thur. 12/02/10: DATA

Wed. 12/01/10: DATA