19.4°F
Current conditions from King Hill
Updated every 5 minutes
 
  Friday December 15, 2017

Westford: December 2017
LOCAL CLIMATOLOGICAL DATA Monthly Summary
December 2017
Station: Westford Latitude: 44° 37' 39" N Longitude: 73° 02' 29" W Elevation (ground): 850 feet Time Zone: Eastern +--+-------------------------------+----+---------+---------+--+-----------+--------------------+-----------------------------+------+ | | Temperature | |Deg. Days|Precip Ty| | Precip | Pressure | Wind |Solar | | +------+------+------+------+---+ Hu-+----+----+1 fog | S+-----+-----+ Adj. to Sea Level +----+----+---+-------+-------+------+ | | M | M | A | | |mid-| H | C |2 hvy fog| n| | Ice +------+------+------+ Avg| Res|Res| Peak |2Minute| Mean | | | a | i | v | | D | ity| e | o |3 thunder| o|Water| plts| | | | | | +---+---+---+---+ W | | | x | n | e | | e | | a | o |4 ice plt| w| | | | | | S | S | | S | | S | | a | | D| i | i | r | M | w | M | t | l |5 hail | | E | S | | | M | p | p | | p | | p | | t | | a| m | m | a | e | | e | i | i |6 glaze | C| q | n | M | M | e | e | e | D | e | D | e | D | t | | t| u | u | g | a | P | a | n | n |7 duststm| v| u | o | a | i | a | e | e | i | e | i | e | i | s | | e| m | m | e | n | t | n | g | g |8 smk, hz| r| v | w | x | n | n | d | d | r | d | r | d | r | m^2 | | | | | | | | | | |9 blw snw| | | | | | | | | | | | | | | | 1| 2 | 3 | 4A | 4B | 5 | 6 | 7 | 8 | 9 |10| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18| 19| 20| 21| 22| 23 | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |01| 38.6 | 30.1 | 34.3 | 35.3 | 32| 87| 30| 0|.........| 0| 0.04| 0.0| 30.27| 29.90|30.113| 1.2| 0.7|240| 20| S| 9|212| 14 | |02| 36.2 | 28.7 | 32.5 | 32.0 | 28| 85| 32| 0|.........| 0| 0.00| 0.0| 30.27| 30.18|30.230| 0.2| 0.2|215| 7| SW| 5|219| 25 | |03| 38.0 | 26.2 | 32.1 | 30.8 | 27| 87| 33| 0|.........| 0| 0.00| 0.0| 30.28| 30.16|30.198| 0.1| 0.1| 65| 6| NE| 4| 37| 33 | |04| 44.2 | 24.1 | 34.2 | 33.6 | 29| 84| 31| 0|.........| 0| 0.00| 0.0| 30.42| 30.21|30.336| 0.8| 0.7|184| 20|SSW| 11|184| 52 | |05| 50.2*| 38.3 | 44.3*| 43.5 | 39| 85| 21| 0|.........| 0| 0.30| 0.0| 30.21| 29.57|29.912| 6.2| 6.1|190| 35| W| 25|274| 7 | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 43.5 | 31.7 | 37.6 | 35.3 | 25| 65| 27| 0|.........| 0| 0.07| 0.0| 29.80| 29.63|29.753| 3.4| 3.2|269| 30| NW| 18|274| 28 | |07| 33.1 | 27.8 | 30.4 | 31.2 | 23| 73| 34| 0|.........| 0| T | T| 29.84| 29.76|29.803| 2.6| 2.5|260| 22| W| 10|274| 27 | |08| 31.1 | 24.9 | 28.0 | 27.7 | 20| 73| 37| 0|.........| T| T | T| 29.93| 29.83|29.886| 2.4| 2.2|233| 18| W| 9|270| 23 | |09| 31.1 | 22.0 | 26.5 | 27.1 | 20| 75| 38| 0|.........| 0| 0.00| 0.0| 29.94| 29.67|29.834| 0.4| 0.4|204| 10| S| 6|215| 31 | |10| 30.4 | 22.2 | 26.3 | 26.3 | 21| 82| 39| 0|.........| 1| 0.01| 0.2| 29.81| 29.63|29.705| 2.0| 1.8|247| 25| W| 14|289| 21 | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 26.1 | 8.5 | 17.3 | 16.7 | 13| 85| 47| 0|.........| 2| 0.08| 1.1| 30.01| 29.80|29.927| 0.4| 0.1|306| 14|WNW| 7|308| 30 | |12| 31.1 | 12.9 | 22.0 | 24.1 | 22| 90| 43| 0|.........| 5| 0.31| 3.0| 29.93| 29.35|29.556| 1.6| 1.3|192| 22|WNW| 9|314| 6 | |13| 18.0 | 6.0 | 12.0 | 12.0 | 8| 84| 53| 0|.........|10| 0.21| 6.6| 29.51| 29.28|29.360| 4.2| 4.2|282| 25| W| 16|276| 5 | |14| 11.9 | -1.8*| 5.0*| 5.6 | -1| 75| 60| 0|.........| 7| 0.00| 0.0| 29.98| 29.51|29.725| 0.8| 0.8|274| 16| W| 11|289| 67 | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |16| | | | | | | | | | | | | | | | | | | | | | | | |17| | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | |19| | | | | | | | | | | | | | | | | | | | | | | | |20| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | |22| | | | | | | | | | | | | | | | | | | | | | | | |23| | | | | | | | | | | | | | | | | | | | | | | | |24| | | | | | | | | | | | | | | | | | | | | | | | |25| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |26| | | | | | | | | | | | | | | | | | | | | | | | |27| | | | | | | | | | | | | | | | | | | | | | | | |28| | | | | | | | | | | | | | | | | | | | | | | | |29| | | | | | | | | | | | | | | | | | | | | | | | |30| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |31| | | | | | | | | | | | | | | | | | | | | | | | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | 463.5| 301.6|------|------|---|----| 525| 0| Days | 1.02| 10.9| 30.42| 29.28|29.888| 1.9| 1.4|242| 35| W| 25|274| ---- | +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 33.1| 21.5| 27.3 | 25.8 | 20|80.5|----|----|≥.01 Inch 7|40.62| 17.5| 4 | 13 |------|----|----|---| 5 | 5 | 25| +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+ | | Season |Snow, Ice | | | | Number of Days | to Date |≥1.0 Inch 3| Greatest in 24 Hours and Dates | Greatest Depth on Ground | +------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice | | Max Temperature | Min Temperature |1990| 340|Thunder 0|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 0.37| 5- 6| 6.6 | 13 | 10 | 13 | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 7 | 13 | 1 |----|----| Clear 1 Partly Cloudy 2 Cloudy 11 | +--------+---------+--------+--------+----+----+------------------------------------------+ NOTES: Data in column 4A are (MAX+MIN) / 2, whereas data in columns 4B, 5, 6, 15, 16, 23 are means via continuous observations Units: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches. for 24 hours. Column 5: Dew point is calculated from temperature and humidity and is continuously averaged for 24 hours. Columns 7, 8: Degree Days heating base is 65°F, cooling base is 65°F. Data in columns 9, 10, 12 are entered manually by the station observer. Columns 17-18: Resultant wind is calculated by the vector sum of continuous wind observations. Column 23: Solar Radiation is measured in Watts/m^2 and is continuously averaged for 24 hours. Data in columns 4B, 5, 6, 15, 16, 23 are updated continuously, there by achieving a "true" mean.
OBSERVATIONS AT 3-HOUR INTERVALS
December 2017: Westford
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind | | | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | | H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | | o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | | u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | | r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 1 | DEC 2 | DEC 3 | | | | | |00| 0|29.90| 0.00| 38| 36| 92|19| 5| 13| 0|30.26| 0.00| 30| 27| 87|06| 0| 0| 0|30.20| 0.00| 29| 26| 91|21| 0| 0| |03| 0|29.93| 0.00| 38| 36| 93|21| 2| 6| 0|30.26| 0.00| 30| 27| 87|11| 0| 0| 0|30.18| 0.00| 29| 26| 91|21| 0| 0| |06| 0|30.00| 0.00| 37| 35| 92|25| 0| 0| 0|30.26| 0.00| 30| 27| 89|11| 0| 0| 0|30.17| 0.00| 27| 26| 94|10| 0| 0| |09| 19|30.09| 0.00| 36| 35| 94|29| 0| 0| 35|30.27| 0.00| 31| 28| 88|11| 0| 0| 54|30.19| 0.00| 29| 27| 93|05| 0| 0| |12| 30|30.14| 0.00| 36| 34| 92|32| 0| 0| 142|30.23| 0.00| 35| 29| 77|21| 4| 6| 162|30.18| 0.00| 38| 31| 75|06| 1| 6| |15| 40|30.17| 0.00| 36| 30| 79|34| 1| 7| 33|30.21| 0.00| 36| 29| 76|21| 0| 0| 40|30.17| 0.00| 37| 30| 76|09| 0| 0| |18| 0|30.22| 0.00| 33| 28| 80|03| 0| 6| 0|30.20| 0.00| 33| 29| 86|21| 0| 0| 0|30.21| 0.00| 31| 28| 88|06| 0| 0| |21| 0|30.26| 0.00| 32| 27| 82|03| 1| 7| 0|30.20| 0.00| 32| 28| 86|21| 0| 0| 0|30.24| 0.00| 27| 26| 93|06| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 4 | DEC 5 | DEC 6 | | | | | |00| 0|30.28| 0.00| 29| 27| 93|06| 0| 0| 0|30.21| 0.00| 39| 30| 72|17| 5| 15| 0|29.63| 0.34| 44| 40| 88|28| 18| 35| |03| 0|30.32| 0.00| 28| 26| 94|06| 0| 0| 0|30.14| 0.00| 39| 33| 77|19| 8| 18| 0|29.70| 0.00| 38| 33| 80|28| 8| 23| |06| 0|30.35| 0.00| 24| 23| 94|06| 0| 0| 0|30.08| 0.00| 40| 34| 79|19| 9| 24| 0|29.78| 0.00| 34| 22| 60|27| 12| 26| |09| 37|30.42| 0.00| 27| 26| 95|06| 0| 0| 16|30.02| 0.00| 44| 37| 77|18| 5| 16| 83|29.79| 0.00| 35| 23| 63|26| 6| 12| |12| 274|30.39| 0.00| 39| 32| 77|04| 0| 0| 19|29.93| 0.00| 42| 39| 88|18| 7| 16| 93|29.76| 0.00| 36| 24| 60|26| 1| 11| |15| 74|30.35| 0.00| 41| 33| 73|23| 0| 0| 28|29.83| 0.00| 44| 42| 92|16| 7| 15| 49|29.75| 0.00| 36| 22| 55|25| 0| 5| |18| 0|30.33| 0.00| 37| 31| 77|17| 1| 6| 0|29.75| 0.00| 47| 43| 87|17| 5| 16| 0|29.77| 0.00| 34| 20| 56|24| 2| 14| |21| 0|30.30| 0.00| 39| 30| 72|22| 0| 6| 0|29.67| 0.07| 47| 45| 94|19| 6| 11| 0|29.77| 0.00| 32| 21| 63|21| 1| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 7 | DEC 8 | DEC 9 | | | | | |00| 0|29.77| 0.00| 32| 22| 67|19| 2| 6| 0|29.83| 0.00| 28| 24| 86|26| 3| 10| 0|29.88| 0.00| 26| 18| 70|21| 2| 6| |03| 0|29.77| 0.00| 31| 26| 80|21| 2| 6| 0|29.87| 0.00| 27| 21| 77|26| 7| 12| 0|29.91| 0.00| 22| 17| 82|21| 0| 0| |06| 0|29.80| 0.00| 32| 24| 72|26| 3| 11| 0|29.90| 0.00| 27| 19| 74|24| 2| 8| 0|29.91| 0.00| 23| 18| 79|20| 0| 0| |09| 84|29.84| 0.00| 31| 21| 65|26| 2| 14| 74|29.91| 0.00| 27| 24| 88|21| 4| 9| 81|29.93| 0.00| 28| 18| 67|20| 3| 8| |12| 250|29.81| 0.00| 33| 22| 64|25| 3| 18| 95|29.90| 0.00| 30| 22| 71|23| 3| 11| 153|29.87| 0.00| 31| 19| 62|18| 0| 0| |15| 25|29.78| 0.00| 33| 21| 62|24| 0| 7| 25|29.87| 0.00| 31| 20| 63|21| 3| 10| 32|29.80| 0.00| 30| 21| 67|03| 0| 0| |18| 0|29.80| 0.00| 31| 24| 75|23| 0| 0| 0|29.89| 0.00| 27| 19| 71|22| 2| 8| 0|29.76| 0.00| 28| 22| 77|03| 0| 0| |21| 0|29.82| 0.00| 29| 26| 88|23| 4| 9| 0|29.88| 0.00| 25| 18| 73|19| 2| 9| 0|29.71| 0.00| 27| 23| 87|07| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 10 | DEC 11 | DEC 12 | | | | | |00| 0|29.67| 0.00| 25| 23| 91|07| 0| 0| 0|29.80| 0.00| 26| 23| 89|20| 2| 10| 0|29.93| 0.00| 13| 10| 86|09| 0| 0| |03| 0|29.64| 0.00| 25| 23| 94|06| 0| 0| 0|29.81| 0.00| 26| 24| 92|22| 0| 0| 0|29.83| 0.00| 15| 12| 88|07| 0| 0| |06| 0|29.65| 0.00| 25| 24| 93|29| 0| 0| 0|29.86| 0.00| 20| 17| 90|34| 0| 5| 0|29.71| 0.00| 24| 21| 85|22| 1| 12| |09| 19|29.66| 0.00| 26| 25| 94|23| 2| 10| 12|29.94| 0.00| 16| 13| 88|01| 0| 4| 11|29.62| 0.00| 27| 24| 91|19| 4| 14| |12| 135|29.68| 0.00| 30| 22| 71|26| 5| 23| 127|29.98| 0.00| 18| 12| 78|00| 1| 5| 19|29.49| 0.00| 29| 27| 89|22| 0| 11| |15| 26|29.74| 0.00| 28| 17| 64|27| 7| 16| 60|29.98| 0.00| 16| 9| 74|03| 1| 4| 9|29.41| 0.00| 31| 28| 87|17| 1| 11| |18| 0|29.78| 0.00| 26| 18| 73|23| 0| 1| 0|30.01| 0.00| 10| 7| 88|02| 0| 0| 0|29.37| 0.00| 30| 29| 94|19| 0| 0| |21| 0|29.79| 0.00| 27| 20| 76|23| 1| 6| 0|29.95| 0.00| 9| 6| 86|05| 0| 0| 0|29.38| 0.00| 21| 19| 93|31| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 13 | DEC 14 | DEC 15 | | | | | |00| 0|29.35| 0.00| 18| 16| 91|08| 0| 0| 0|29.51| 0.00| 6| -0| 74|28| 6| 12| 0|29.98| 0.00| 6| 1| 78|27| 1| 9| |03| 0|29.31| 0.00| 17| 15| 91|31| 0| 0| 0|29.53| 0.00| 6| 1| 81|26| 0| 0| | | | | | | | | | |06| 0|29.30| 0.00| 16| 14| 91|28| 3| 9| 0|29.58| 0.00| 2| -2| 84|02| 0| 0| | | | | | | | | | |09| 5|29.29| 0.00| 12| 10| 90|29| 0| 4| 18|29.67| 0.00| -1| -4| 86|02| 0| 0| | | | | | | | | | |12| 14|29.30| 0.00| 11| 7| 85|27| 3| 12| 427|29.71| 0.00| 8| 1| 73|01| 0| 0| | | | | | | | | | |15| 9|29.36| 0.00| 10| 4| 77|28| 7| 19| 225|29.77| 0.00| 10| 1| 64|30| 0| 0| | | | | | | | | | |18| 0|29.43| 0.00| 9| 4| 79|27| 2| 16| 0|29.86| 0.00| 6| -2| 68|26| 2| 7| | | | | | | | | | |21| 0|29.47| 0.00| 9| 3| 77|27| 12| 21| 0|29.93| 0.00| 6| -1| 73|25| 1| 8| | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 16 | DEC 17 | DEC 18 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.06 | 0.07 | 0.08 | 0.09 | 0.10 | 0.11 | 0.12 | 0.12 | 0.14 | 0.14 | 0.16 | 0.17 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 05 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 05 | 05 | 05 | 05 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 2358 | 0001 | 0007 | 0014 | 0017 | 0028 | 0040 | 0040 | 2140 | 2136 | 2200 | 2217 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ The precipitation amounts for the indicated time intervals may occur at any time during the month. The time indicated is the ending time of the interval. Date and time are not entered for trace amounts.
OBSERVATIONS AT 3-HOUR INTERVALS
December 2017: Westford
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind | | | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | | H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | | o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | | u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | | r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 19 | DEC 20 | DEC 21 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 22 | DEC 23 | DEC 24 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 25 | DEC 26 | DEC 27 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 28 | DEC 29 | DEC 30 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 31 | | | | | | | |00| | | | | | | | | | | | |03| | | | | | | | | | | | |06| | | | | | | | | | | | |09| | | | | | | | | | | | |12| | | | | | | | | | | | |15| | | | | | | | | | | | |18| | | | | | | | | | | | |21| | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
WEATHER NOTES SUMMARY BY HOURS
+--+-----------------------------+---------+ Wind Direction: Directions are those from which the wind is blowing, | | Averages | | indicated in tens of degrees from true North: i.e., 09 for East, 18 for | +----+------+---+---+---+-----+Resultant| South, 27 for West, and 00 or 36 for North. | | | | | | | | | Wind Speed: The observed one-minute average speed in miles-per-hour. | | | | T | | | | Wind | Wind Gust: The maximum instantaneous wind speed for the ten minute-period | | | | e | | % | W +----+----+ preceding the observation. | | | | m | D | | i | D | | Rainfall Rate: The instantaneous rainfall rate at time of observation, | | S | P | p | e | H | n | i | | calculated by timing consecutive 0.01" pulses from the electronic rain | | u | r | e | w | u | d | r | | gauge and interpolating this rate for one hour. | | n | e | r | | m | | e | | | | s | s | a | P | i | S | c | S | | H| h | s | t | o | d | p | t | p | | o| i | u | u | i | i | e | i | e | | u| n | r | r | n | t | e | o | e | | r| e | e | e | t | y | d | n | d | +--+----+------+---+---+---+-----+----+----+ |00| 0|29.878| 26| 21| 84| 2.9| 25 | 2.1| |03| 0|29.872| 26| 23| 86| 1.9| 25 | 1.4| |06| 0|29.883| 26| 21| 84| 2.1| 25 | 1.7| |09| 39|29.902| 26| 22| 84| 1.9| 22 | 1.6| |12| 139|29.881| 30| 23| 76| 2.1| 23 | 1.4| |15| 48|29.872| 30| 22| 72| 2.0| 25 | 1.1| |18| 0|29.887| 27| 21| 79| 1.0| 22 | 0.8| |21| 0|29.884| 26| 21| 82| 2.0| 24 | 1.6| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
December 2017: Westford
---+-----------------------------------------------------------+-----------------------------------------------------------+--- | | | D| A.M. Hour Ending at | P.M. Hour Ending at |D a| | |a t+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+t e| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |e ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- 01| | | | | | |0.04| | | | | | | | | | | | | | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | |0.02| | |0.04| |0.01| | |0.01|0.07|0.07|0.02|0.06|05 | | | | | | | | | | | | | | | | | | | | | | | | | 06|0.06| |0.01| | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | |0.01| | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 31| | | | | | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.06|0.00|0.01|0.00|0.00|0.00|0.04|0.00|0.00|0.00|0.00|0.03|0.00|0.00|0.04|0.00|0.01|0.00|0.00|0.01|0.07|0.07|0.02|0.06|Sum ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- During a frozen precipitation event, hourly precipitation totals may not be recorded. In this case, daily amounts are typically entered in the last column (hour ending at 12 A.M.)

 
 
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