Blue Hill Meteorological Observatory

42° 12' 44"N, 71° 06' 53"W, Elevation 635 ft.

Tuesday, February 9, 2010
3:40:00 AM (Eastern)

40th day of the year

Updated and refreshed every 10 minutes.

Weather computer in use: Davis Vantage Pro

  Current Today's Highs and Lows
Temperature 18.7°F (-7.4°C) ↓ 21.7° 12:00 AM
18.7° 3:22 AM
Dew Point 9.9°F (-12.3°C) ↓ 11.8° 3:26 AM
9.8° 3:08 AM
Humidity 68% ↑ 74% 3:26 AM
63% 12:00 AM
Wind Gust W 24 mph W 31 2:39 AM
WNW 6 12:39 AM
Wind Speed W 17 mph ↓
Moderate breeze (4)
W 25 12:00 AM
W 11 12:22 AM
Precipitation 0.00" (0.00 mm) 1
Last 24 hours 0.00"
Instantaneous rate 0.00"/hr
Storm total 0.00"
0.00"2 12:00 AM
0.00"2 12:00 AM
Evapotranspiration 0.006"  
Barometer 29.886" (1012.1 mb)
Falling
29.896" 1:59 AM
29.866" 12:00 AM
Wind Chill Gust 6.1°F (-14.4°C) 12.9° 12:39 AM
-0.0° 2:39 AM
Wind Chill Avg 3.8°F (-15.7°C) 9.7° 12:22 AM
2.2° 2:29 AM
Heat Index 18°F (-7.8°C) 21° 12:00 AM
18° 3:03 AM
Sunshine 0 W/m2 0 12:00 AM
0 12:00 AM
1. Daily total rainfall.
2. Maximum and minimum rainfall are the instantaneous rainfall rates.

METAR

METAR ??? 090840Z AUTO 28015KT M07/M12 A2989 RMK AO1 SLP121 T10741123 

Alarms

None. 

Battery

Transmitters All OK
Console 4.82V

Number of Days

For February For 2010
Rain: 1
Snow: 0
Heavy Fog: 0
Thunder: 0
High ≥ 90°F: 0
Low ≤ 32°F: 8
High ≤ 32°F: 7
Low ≤ 0°F: 0
Cloudy: 0
Partly Cloudy: 0
Clear: 8
Rain: 17
Snow: 0
Heavy Fog: 0
Thunder: 0
High ≥ 90°F: 0
Low ≤ 32°F: 38
High ≤ 32°F: 21
Low ≤ 0°F: 0
Cloudy: 0
Partly Cloudy: 0
Clear: 39
Date of last rainfall: February 3, 2010 (6 days)

Observed Conditions

Precipitation types none
Snowfall today 0.0 inches
Snow on the ground 0 inches
Snowfall this season 0.0 inches

Observer Notes for Today

None. 

Degree Days

  Today Month Season
Heating - Base 65°F 44 373 3767
Cooling - Base 65°F 0 0 0

Wind Run

Today 61.9 miles
This month 2441.8 miles
This year 12142.8 miles

Sun, Moon

Twilight begins 6:30 AM
Sunrise 6:50 AM
Sunset 5:07 PM
Twilight ends 5:27 PM
Moonrise 4:06 AM
Moonset 1:01 PM

Sunshine Minutes

Sunshine intensity ≥ 120 W/m2

Today 0
This Month 3,082
This Year 12,141
Yesterday 463
One Year Ago 503

Other Calculated Parameters

Wet Bulb 16.5°F
Temperature-Humidity Index 16.9°F
Equilibrium Moisture Content 12.84 %
Mixing Ratio 1.50 g/kg
Saturated Mixing Ratio 2.21 g/kg
Air Density 1.327 kg/m3
Density Altitude -2028 ft
Estimated Potential Cloud Base 1982 ft

Averages

  Last 5 minutes Current Hour Current Day
Temperature °F 18.7 18.8 19.8
Dew Point °F 9.9 10.1 10.5
Humidity 68 68.2 66.4
Wind Speed (mph) 281° 17.4 284° 17.1 279° 16.9
Precipitation (inches) 0.00 0.00 0.00
Barometer (inches Hg.) 29.886 29.890 29.888
Wind Chill °F 3.6 3.9 5.4
Heat Index °F 18.0 18.2 19.4
Sunshine 0.0 0.0 0.0

Yesterday

February 8, 2010

  Maximum
Minimum
Mean/Total
Temperature 31.6°F 2:46 PM
17.5°F 3:00 AM
24.5°
Dew Point 14.0°F 8:22 PM
10.0°F 2:14 AM
11.5°
Humidity 73% 3:33 AM
44% 1:57 PM
60.4°
Wind Gust WNW 40 mph 11:03 PM
W 4 mph 8:15 AM
18.0 274°
Wind Speed W 28 mph 3:37 PM
W 10 mph 10:19 PM
 
Barometer 29.866" 11:59 PM
29.711" 12:59 PM
29.756
Wind Chill Gust 26.5°F 1:56 PM
-2.2°F 3:07 AM
9.7°
Wind Chill Avg 22.4°F 1:56 PM
0.3°F 3:19 AM
 
Heat Index 31°F 1:48 PM
17°F 1:37 AM
23.0°
Sunshine 566 W/m2 12:58 PM
0 W/m2 12:00 AM
130.6
Degree Days Heating (Base 65°F): 40
Cooling (Base 65°F): 0
Precipitation   0.00"
Evapotranspiration   0.094"
Precipitation Types none
Snowfall 0.0"
Snowcover 0"
Observer Notes None. 

One Year Ago

February 9, 2009

  Maximum
Minimum
Mean/Total
Temperature 37.0°F 3:50 PM
22.9°F 6:53 AM
30.0°
Dew Point 20.9°F 12:00 AM
9.6°F 7:11 AM
14.6°
Humidity 66% 1:14 AM
40% 4:48 PM
52.3°
Wind Gust WNW 39 mph 2:29 AM
NNW 0 mph 7:45 AM
10.0 291°
Wind Speed WNW 29 mph 2:42 AM
NNW 0 mph 7:56 AM
 
Barometer 30.403" 11:59 PM
30.049" 12:00 AM
30.274
Wind Chill Gust 36.4°F 4:21 PM
10.3°F 4:16 AM
22.3°
Wind Chill Avg 32.7°F 2:05 PM
12.8°F 4:18 AM
 
Heat Index 37°F 3:50 PM
22°F 6:53 AM
29.7°
Sunshine 638 W/m2 11:58 AM
0 W/m2 12:00 AM
143.6
Degree Days Heating (Base 65°F): 35
Cooling (Base 65°F): 0
Precipitation   0.00"
Precipitation Types none
Snowfall 0.0"
Snowcover 0"
Observer Notes None. 

Monthly and Yearly Statistics

  Monthly
Maximum, Minimum, Mean/Total
Yearly
Maximum, Minimum, Mean/Total
Temperature °F 32.8° on Feb 5 12:54 PM
10.6° on Feb 7 2:45 AM
Mean 23.2°
56.3° on Jan 25 5:21 PM
2.4° on Jan 30 6:02 AM
Mean 25.2°
Dew Point °F 25.5° on Feb 3 10:35 AM
-2.0° on Feb 4 3:26 PM
Mean 11.0°
55.7° on Jan 25 5:22 PM
-10.7° on Jan 30 4:40 AM
Mean 15.0°
Humidity 93% on Feb 3 6:05 AM
25% on Feb 4 2:55 PM
Mean 61.2%
100% on Jan 2 5:57 PM
24% on Jan 23 12:53 PM
Mean 68.0%
Wind Gust (mph) WNW 39 on Feb 8 11:04 PM
WSW 0 on Feb 2 8:57 AM
Mean 281° 12.4
ESE 64 on Jan 25 3:39 PM
W 0 on Jan 1 9:01 AM
Mean 278° 12.7
Wind Speed WNW 30 on Feb 7 7:09 PM
WNW 0 on Feb 2 11:48 AM
SE 48 on Jan 25 3:41 PM
N 0 on Jan 2 5:08 PM
Barometer 30.269" on Feb 2 8:29 AM
29.649" on Feb 7 1:44 PM
Mean 29.988"
30.283" on Jan 23 7:14 PM
29.097" on Jan 3 5:14 AM
Mean 29.929"
Precipitation Total 0.03" Total 3.24"
Evapotranspiration Total 0.650" Total 2.231"
Wind Chill Gust °F -11.0° on Feb 7 2:57 AM -22.0° on Jan 30 4:34 AM
Wind Chill Average °F -9.1° on Feb 7 10:10 AM
Mean 11.9°
-19.3° on Jan 30 3:47 AM
Mean 14.0°
Heat Index °F 32° on Feb 5 12:11 PM
Mean 22.6°
56° on Jan 25 5:11 PM
Mean 24.3°
Sunshine 640 W/m2 on Feb 3 12:36 PM
0 W/m2 on Feb 1 12:00 AM
Mean 95.6 W/m2
640 W/m2 on Feb 3 12:36 PM
0 W/m2 on Jan 1 12:00 AM
Mean 80.1 W/m2
Extremes are the first of multiple occurrences.

All-Time Records

  Maximum, Minimum
Temperature °F 126.0° on Nov 23, 2009 1:41 AM
-5.9° on Jan 22, 2005 7:10 AM
Dew Point °F 117.5° on Nov 23, 2009 1:41 AM
-59.8° on Apr 5, 2007 9:49 AM
Humidity 100% on Apr 24, 2004 7:18 AM
0% on Apr 5, 2007 8:24 AM
Wind Gust (mph) SE 75 on Jan 18, 2006 12:40 PM
NNE 0 on Apr 20, 2004 6:00 PM
Wind Speed SE 56 on Jan 18, 2006 12:32 PM
N 0 on Apr 20, 2004 5:21 PM
Barometer 30.807" on Mar 21, 2007 8:14 AM
28.699" on Nov 22, 2005 2:44 PM
Precipitation Max rate: 96.00"/hr on Jan 12, 2005 5:44 PM
Evapotranspiration Max day: 65.534" on Nov 26, 2004 1:01 AM
Wind Chill Gust °F -27.1° on Jan 26, 2007 6:07 AM
Wind Chill Average °F -27.1° on Jan 22, 2005 3:53 AM
Heat Index °F 140° on Nov 20, 2009 5:55 AM
Sunshine 1334 W/m2 on Jul 6, 2006 12:23 PM
0 W/m2 on Apr 20, 2004 7:33 PM
Records begin .
Extremes are the first of multiple occurrences.

 

Data generated by WxSolution Version 1.8.4.5, Build 2009.10.25.