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  Tuesday December 11, 2018

Westford: December 2018
LOCAL CLIMATOLOGICAL DATA Monthly Summary
December 2018
Station: Westford Latitude: 44° 37' 38" 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 | m² | | | | | | | | | | |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| 32.3 | 27.4 | 29.8 | 29.2 | 27| 92| 35| 0|.........|10| 0.00| 0.0| 30.20| 30.05|30.146| 0.0| 0.0| 0| 0|ENE| 0| 68| 1 | |02| 41.0 | 28.3 | 34.7*| 35.7 | 34| 93| 30| 0|.........| 6| 0.28| 0.0| 30.05| 29.47|29.719| 2.3| 2.3|198| 21| S| 10|198| 18 | |03| 42.2*| 26.9 | 34.5 | 35.4 | 34| 95| 30| 0|.........| 3| 0.39| 0.6| 29.73| 29.39|29.516| 2.4| 1.9|235| 21|WNW| 12|299| 19 | |04| 28.1 | 13.8 | 21.0 | 20.2 | 17| 86| 44| 0|.........| 4| 0.08| 1.5| 30.07| 29.73|29.936| 2.0| 2.0|325| 21| NW| 10|313| 17 | |05| 25.7 | 10.7 | 18.2 | 20.7 | 18| 89| 46| 0|.........| 4| 0.03| 0.9| 30.07| 30.01|30.037| 0.1| 0.1|209| 6|SSW| 2|194| 25 | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 30.2 | 19.0 | 24.6 | 26.0 | 23| 90| 40| 0|.........| 5| 0.06| 0.5| 30.02| 29.94|29.973| 2.5| 2.5|211| 18|SSW| 10|218| 18 | |07| 28.3 | 1.5 | 14.9 | 16.8 | 13| 84| 50| 0|.........| 6| 0.14| 1.1| 30.42| 29.95|30.242| 1.0| 0.9|300| 15| W| 8|313| 8 | |08| 16.8 | -4.0*| 6.4*| 7.3 | 3| 82| 58| 0|.........| 6| T | T| 30.48| 30.40|30.433| 0.0| 0.0|260| 5| SW| 2|288| 25 | |09| 30.5 | 7.7 | 19.1 | 22.3 | 17| 82| 45| 0|.........| 5| T | T| 30.44| 30.08|30.231| 2.1| 1.9|228| 20|SSW| 10|254| 34 | |10| 27.4 | 3.5 | 15.4 | 16.0 | 11| 79| 49| 0|.........| 5| T | T| 30.20| 30.07|30.150| 0.2| 0.2|346| 14| NW| 5| 8| 59 | | | | | | | | | | | | | | | | | | | | | | | | | | |11| | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | |13| | | | | | | | | | | | | | | | | | | | | | | | |14| | | | | | | | | | | | | | | | | | | | | | | | |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 +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | 302.5| 134.8|------|------|---|----| 427| 0| Days | 0.98| 4.6| 30.48| 29.39|30.050| 1.2| 0.8|237| 21| S| 12|299| ---- | +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 30.3| 13.5| 21.9 | 21.2 | 18|87.4|----|----|≥.01 Inch 6|40.13| 32.1| 8 | 3 |------|----|----|---| 2+ | 3 | 20| +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+ | | Season |Snow, Ice | | | | Number of Days | to Date |≥1.0 Inch 2| Greatest in 24 Hours and Dates | Greatest Depth on Ground | +------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice | | Max Temperature | Min Temperature |2280| 209|Thunder 0|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 0.00| - | 1.5 | 4 | 10 | 1 | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 8 | 10 | 1 |----|----| Clear 2 Partly Cloudy 1 Cloudy 7 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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/m² 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 2018: 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|30.08| 0.00| 28| 27| 95|04| 0| 0| 0|30.05| 0.00| 29| 27| 94|05| 0| 0| 0|29.49| 0.00| 41| 40| 96|21| 3| 13| |03| 0|30.12| 0.00| 28| 26| 93|04| 0| 0| 0|30.00| 0.00| 30| 29| 95|05| 0| 0| 0|29.43| 0.00| 40| 40| 97|20| 5| 14| |06| 0|30.16| 0.00| 28| 26| 93|04| 0| 0| 0|29.92| 0.00| 33| 31| 93|17| 0| 2| 0|29.40| 0.00| 39| 38| 97|21| 2| 7| |09| 0|30.19| 0.00| 29| 28| 95|04| 0| 0| 0|29.82| 0.00| 35| 33| 91|21| 0| 6| 19|29.44| 0.00| 40| 39| 97|29| 1| 11| |12| 5|30.16| 0.00| 31| 29| 90|04| 0| 0| 169|29.66| 0.00| 40| 35| 84|17| 6| 14| 39|29.43| 0.00| 40| 37| 88|23| 2| 10| |15| 0|30.18| 0.00| 32| 29| 88|05| 0| 0| 23|29.56| 0.00| 36| 35| 94|22| 2| 10| 23|29.50| 0.00| 33| 31| 93|30| 1| 14| |18| 0|30.16| 0.00| 30| 28| 92|05| 0| 0| 0|29.53| 0.00| 38| 37| 96|19| 4| 10| 0|29.63| 0.00| 28| 27| 94|34| 0| 0| |21| 0|30.13| 0.00| 29| 27| 93|05| 0| 0| 0|29.52| 0.00| 39| 38| 96|20| 5| 10| 0|29.68| 0.00| 27| 26| 94|34| 0| 12| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 4 | DEC 5 | DEC 6 | | | | | |00| 0|29.73| 0.00| 28| 26| 92|33| 0| 7| 0|30.06| 0.00| 17| 15| 92|32| 0| 0| 0|30.01| 0.00| 23| 22| 93|19| 0| 5| |03| 0|29.79| 0.00| 25| 23| 92|32| 5| 13| 0|30.05| 0.00| 17| 15| 92|25| 0| 0| 0|30.01| 0.00| 23| 22| 94|20| 1| 5| |06| 0|29.86| 0.00| 22| 19| 89|32| 5| 13| 0|30.03| 0.00| 12| 10| 92|25| 0| 0| 0|30.00| 0.00| 24| 22| 93|20| 0| 8| |09| 19|29.94| 0.00| 20| 15| 79|32| 0| 10| 44|30.07| 0.00| 20| 17| 89|22| 0| 0| 25|30.00| 0.00| 25| 22| 88|22| 4| 10| |12| 70|29.97| 0.00| 21| 16| 81|32| 8| 13| 116|30.04| 0.00| 25| 19| 80|21| 0| 2| 65|29.96| 0.00| 27| 23| 86|21| 4| 11| |15| 47|29.99| 0.00| 21| 14| 75|30| 1| 10| 25|30.02| 0.00| 25| 20| 82|23| 0| 0| 47|29.95| 0.00| 28| 24| 87|19| 0| 7| |18| 0|30.01| 0.00| 16| 12| 85|32| 0| 0| 0|30.03| 0.00| 23| 21| 90|23| 0| 0| 0|29.94| 0.00| 28| 25| 89|20| 2| 8| |21| 0|30.04| 0.00| 14| 12| 91|32| 0| 0| 0|30.02| 0.00| 23| 21| 93|21| 0| 0| 0|29.94| 0.00| 30| 26| 85|21| 6| 14| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 7 | DEC 8 | DEC 9 | | | | | |00| 0|29.95| 0.00| 28| 27| 94|19| 0| 5| 0|30.42| 0.00| 2| -1| 88|05| 0| 0| 0|30.44| 0.00| 17| 13| 87|25| 0| 0| |03| 0|30.02| 0.00| 27| 25| 94|30| 1| 12| 0|30.42| 0.00| -2| -4| 88|05| 0| 0| 0|30.42| 0.00| 10| 8| 91|25| 0| 0| |06| 0|30.14| 0.00| 21| 18| 87|29| 6| 10| 0|30.42| 0.00| -3| -6| 88|05| 0| 0| 0|30.35| 0.00| 16| 14| 91|21| 0| 0| |09| 14|30.24| 0.00| 18| 14| 83|32| 2| 11| 7|30.47| 0.00| 2| -1| 89|05| 0| 0| 21|30.31| 0.00| 20| 16| 83|21| 2| 7| |12| 26|30.28| 0.00| 18| 13| 80|34| 0| 0| 211|30.44| 0.00| 12| 6| 75|05| 0| 0| 88|30.18| 0.00| 26| 20| 80|20| 6| 14| |15| 7|30.32| 0.00| 16| 10| 75|35| 0| 0| 44|30.42| 0.00| 16| 7| 67|24| 0| 0| 113|30.12| 0.00| 30| 22| 72|22| 0| 9| |18| 0|30.37| 0.00| 11| 7| 83|35| 0| 0| 0|30.42| 0.00| 7| 4| 86|24| 0| 0| 0|30.12| 0.00| 29| 21| 72|27| 5| 18| |21| 0|30.40| 0.00| 8| 4| 85|34| 0| 0| 0|30.45| 0.00| 15| 11| 82|21| 0| 2| 0|30.09| 0.00| 29| 23| 78|25| 1| 9| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 10 | DEC 11 | DEC 12 | | | | | |00| 0|30.09| 0.00| 25| 21| 84|22| 0| 3| 0|30.16| 0.00| 4| 1| 89|02| 0| 0| | | | | | | | | | |03| 0|30.09| 0.00| 24| 19| 79|31| 0| 0| | | | | | | | | | | | | | | | | | | |06| 0|30.11| 0.00| 18| 13| 80|02| 0| 0| | | | | | | | | | | | | | | | | | | |09| 44|30.17| 0.00| 15| 10| 80|01| 0| 0| | | | | | | | | | | | | | | | | | | |12| 413|30.16| 0.00| 19| 10| 68|30| 0| 0| | | | | | | | | | | | | | | | | | | |15| 42|30.17| 0.00| 19| 9| 67|02| 0| 1| | | | | | | | | | | | | | | | | | | |18| 0|30.19| 0.00| 9| 5| 85|02| 0| 0| | | | | | | | | | | | | | | | | | | |21| 0|30.18| 0.00| 5| 3| 89|02| 0| 0| | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 13 | DEC 14 | DEC 15 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 2018: 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|30.044| 22| 20| 91| 0.3| 21 | 0.3| |03| 0|30.035| 22| 20| 92| 1.2| 26 | 0.6| |06| 0|30.039| 21| 18| 90| 1.4| 30 | 1.1| |09| 19|30.063| 22| 19| 87| 1.0| 25 | 0.7| |12| 120|30.027| 26| 21| 81| 2.6| 23 | 1.5| |15| 37|30.022| 25| 20| 80| 0.4| 26 | 0.3| |18| 0|30.041| 22| 19| 87| 1.0| 23 | 0.8| |21| 0|30.045| 22| 19| 89| 1.2| 21 | 1.2| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
December 2018: 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| | | | | | | | | | | | | | | | | | | | | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |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|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|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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