50.6°F
Current conditions from King Hill
Updated every 5 minutes
 
  Friday May 26, 2017

Westford: May 2017
LOCAL CLIMATOLOGICAL DATA Monthly Summary
May 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| 61.4 | 42.4 | 51.9 | 52.2 | 49| 90| 13| 0|..3......| 0| 0.84| 0.0| 30.00| 29.49|29.768| 3.6| 3.0|195| 27|WSW| 12|197| 80 | |02| 56.4 | 45.6 | 51.0 | 52.7 | 49| 89| 14| 0|.........| 0| 0.12| 0.0| 29.56| 29.42|29.487| 2.5| 2.3|235| 25| S| 12|248| 41 | |03| 49.0 | 39.7 | 44.3 | 43.7 | 37| 78| 20| 0|.........| 0| 0.02| 0.0| 30.13| 29.54|29.797| 4.3| 3.7|270| 26| W| 13|307| 75 | |04| 62.7 | 32.9 | 47.8 | 49.5 | 32| 56| 17| 0|.........| 0| 0.00| 0.0| 30.24| 30.05|30.144| 0.8| 0.8|228| 16|WNW| 7|213| 228 | |05| 51.2 | 42.1 | 46.7 | 46.6 | 43| 87| 18| 0|.........| 0| 0.36| 0.0| 30.07| 29.54|29.814| 2.3| 2.3|176| 23| S| 12|193| 58 | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 69.0 | 49.4 | 59.2 | 58.5 | 51| 78| 6| 0|.........| 0| 0.08| 0.0| 29.55| 29.24|29.360| 2.8| 2.8|182| 27|SSE| 11|201| 147 | |07| 57.6 | 37.7 | 47.7 | 47.8 | 44| 87| 17| 0|.........| 0| 0.23| 0.0| 29.67| 29.28|29.463| 2.9| 2.4|218| 23|SSW| 12|201| 100 | |08| 43.5 | 32.4 | 38.0 | 36.1 | 32| 87| 27| 0|.........| 0| 0.03| T| 29.88| 29.67|29.762| 1.8| 1.8|300| 15| W| 10|296| 122 | |09| 45.4 | 28.8*| 37.1*| 38.1 | 33| 83| 28| 0|.........| 0| 0.04| T| 30.02| 29.88|29.959| 0.3| 0.3|338| 9| NW| 5|311| 117 | |10| 53.0 | 33.9 | 43.5 | 43.8 | 35| 73| 21| 0|.........| 0| 0.00| 0.0| 30.06| 29.99|30.026| 1.1| 1.1|346| 18| N| 9|306| 170 | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 59.9 | 38.8 | 49.3 | 47.5 | 41| 78| 15| 0|.........| 0| 0.00| 0.0| 30.06| 29.94|30.004| 1.3| 1.1| 13| 18| N| 8|288| 181 | |12| 68.8 | 37.5 | 53.2 | 53.4 | 43| 70| 11| 0|.........| 0| 0.00| 0.0| 30.03| 29.90|29.970| 0.6| 0.2|165| 11|NNE| 8|225| 218 | |13| 61.7 | 46.7 | 54.2 | 53.8 | 46| 74| 10| 0|.........| 0| 0.01| 0.0| 29.91| 29.80|29.860| 1.1| 1.0|219| 13| SW| 8|215| 147 | |14| 51.7 | 41.7 | 46.7 | 46.1 | 44| 91| 18| 0|.........| 0| 0.22| 0.0| 29.80| 29.56|29.661| 0.4| 0.1|248| 12|NNE| 5|194| 102 | |15| 64.2 | 44.0 | 54.1 | 53.3 | 46| 79| 11| 0|.........| 0| 0.26| 0.0| 29.80| 29.55|29.642| 2.6| 2.4|341| 24|NNW| 10|338| 147 | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 71.5 | 46.0 | 58.8 | 58.6 | 47| 67| 6| 0|.........| 0| 0.00| 0.0| 29.93| 29.79|29.876| 0.8| 0.8|312| 14| NW| 9|279| 288 | |17| 87.2 | 50.6 | 68.9 | 70.4 | 54| 58| 0| 4|.........| 0| 0.00| 0.0| 29.89| 29.70|29.786| 3.3| 3.0|231| 27| SW| 15|213| 267 | |18| 89.6*| 66.9 | 78.3*| 77.2 | 61| 58| 0| 14|..3......| 0| 0.01| 0.0| 29.75| 29.57|29.674| 3.4| 3.3|231| 21| SW| 11|231| 250 | |19| 70.5 | 44.2 | 57.3 | 57.3 | 49| 75| 7| 0|.........| 0| 0.00| 0.0| 30.15| 29.62|29.853| 2.0| 1.8|292| 19|WNW| 8|294| 103 | |20| 63.0 | 35.9 | 49.5 | 49.0 | 34| 59| 15| 0|.........| 0| 0.00| 0.0| 30.34| 30.14|30.296| 0.8| 0.8|352| 15| N| 7|305| 309 | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 68.4 | 36.5 | 52.5 | 53.5 | 40| 63| 12| 0|.........| 0| 0.03| 0.0| 30.36| 30.09|30.256| 0.3| 0.3|245| 11| W| 7|296| 202 | |22| 53.1 | 45.7 | 49.4 | 50.1 | 48| 93| 15| 0|.........| 0| 0.75| 0.0| 30.10| 29.86|29.968| 3.0| 3.0|205| 30|SSW| 11|223| 60 | |23| 69.6 | 47.0 | 58.3 | 57.4 | 49| 76| 6| 0|.........| 0| 0.00| 0.0| 29.91| 29.75|29.832| 1.6| 1.5|249| 15| SE| 8|257| 231 | |24| 76.7 | 46.7 | 61.7 | 60.7 | 53| 77| 3| 0|.........| 0| 0.00| 0.0| 29.77| 29.69|29.729| 0.2| 0.1|292| 9| W| 6|289| 197 | |25| 63.8 | 51.7 | 57.8 | 57.2 | 51| 82| 7| 0|.........| 0| 0.17| 0.0| 29.78| 29.60|29.711| 0.3| 0.3|174| 14|SSE| 8|173| 89 | | | | | | | | | | | | | | | | | | | | | | | | | | |26| | | | | | | | | | | | | | | | | | | | | | | | |27| | | | | | | | | | | | | | | | | | | | | | | | |28| | | | | | | | | | | | | | | | | | | | | | | | |29| | | | | | | | | | | | | | | | | | | | | | | | |30| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |31| | | | | | | | | | | | | | | | | | | | | | | | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1568.9|1064.8|------|------|---|----| 317| 18| Days | 3.17| T | 30.36| 29.24|29.819| 1.7| 1.0|239| 30|SSW| 15|213| ---- | +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 62.8| 42.6| 52.7 | 52.6 | 45|77.2|----|----|≥.01 Inch 15|16.04|108.4| 21 | 6 |------|----|----|---| 22 | 17 | 151| +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+ | | Season |Snow, Ice | | | | Number of Days | to Date |≥1.0 Inch 0| Greatest in 24 Hours and Dates | Greatest Depth on Ground | +------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice | | Max Temperature | Min Temperature |7123| 21|Thunder 2|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 0.84| 1 | T | 8+ | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 1 | 0 | 2 | 0 |----|----| Clear 3 Partly Cloudy 8 Cloudy 14 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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
May 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 1 | MAY 2 | MAY 3 | | | | | |00| 0|30.00| 0.00| 43| 37| 82|21| 3| 6| 0|29.49| 0.00| 55| 54| 96|07| 2| 7| 0|29.55| 0.00| 46| 40| 80|22| 8| 21| |03| 0|29.91| 0.13| 48| 44| 86|20| 6| 18| 0|29.49| 0.00| 54| 52| 94|21| 3| 8| 0|29.54| 0.00| 43| 42| 94|21| 6| 13| |06| 0|29.86| 0.00| 48| 46| 95|20| 7| 15| 7|29.48| 0.00| 55| 54| 95|20| 3| 7| 9|29.62| 0.00| 44| 40| 85|23| 4| 8| |09| 42|29.84| 0.00| 50| 49| 95|18| 7| 16| 104|29.48| 0.00| 56| 54| 92|25| 0| 0| 100|29.69| 0.00| 45| 41| 84|24| 5| 12| |12| 107|29.80| 0.00| 53| 52| 96|19| 1| 7| 56|29.47| 0.00| 54| 52| 91|25| 0| 0| 107|29.79| 0.00| 43| 36| 75|31| 2| 20| |15| 218|29.73| 0.00| 56| 54| 94|08| 1| 5| 83|29.42| 0.00| 55| 49| 79|20| 0| 0| 102|29.91| 0.00| 43| 36| 77|29| 3| 14| |18| 90|29.63| 0.00| 59| 54| 83|06| 0| 0| 39|29.48| 0.08| 49| 46| 88|23| 8| 13| 125|29.96| 0.00| 48| 36| 63|33| 7| 14| |21| 0|29.57| 0.00| 56| 51| 83|18| 4| 12| 0|29.54| 0.00| 46| 42| 84|21| 6| 12| 0|30.03| 0.00| 41| 33| 71|33| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 4 | MAY 5 | MAY 6 | | | | | |00| 0|30.13| 0.00| 40| 31| 69|29| 0| 0| 0|30.07| 0.00| 46| 43| 91|20| 0| 0| 0|29.54| 0.00| 50| 46| 84|19| 3| 11| |03| 0|30.17| 0.00| 37| 31| 78|29| 0| 0| 0|29.98| 0.00| 45| 43| 93|20| 0| 0| 0|29.48| 0.00| 51| 48| 89|18| 4| 10| |06| 16|30.19| 0.00| 33| 30| 88|29| 0| 0| 7|29.94| 0.00| 43| 42| 96|20| 1| 4| 11|29.43| 0.00| 51| 50| 95|16| 0| 0| |09| 503|30.23| 0.00| 50| 36| 59|20| 0| 0| 86|29.91| 0.00| 45| 41| 85|18| 1| 9| 44|29.40| 0.00| 56| 54| 93|19| 3| 11| |12| 733|30.18| 0.00| 58| 32| 37|26| 0| 7| 232|29.84| 0.00| 49| 42| 77|14| 1| 10| 541|29.35| 0.00| 63| 57| 80|18| 8| 25| |15| 548|30.11| 0.00| 62| 34| 34|23| 4| 8| 69|29.77| 0.05| 45| 42| 91|15| 0| 8| 234|29.28| 0.00| 66| 57| 72|19| 6| 23| |18| 63|30.07| 0.00| 59| 28| 31|20| 0| 1| 46|29.67| 0.00| 49| 45| 87|16| 2| 13| 88|29.26| 0.00| 67| 52| 60|17| 3| 13| |21| 0|30.08| 0.00| 55| 32| 41|18| 4| 10| 0|29.60| 0.00| 50| 45| 82|20| 8| 16| 0|29.31| 0.00| 61| 48| 62|17| 0| 10| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 7 | MAY 8 | MAY 9 | | | | | |00| 0|29.29| 0.00| 57| 48| 72|22| 1| 7| 0|29.67| 0.00| 38| 36| 93|01| 0| 0| 0|29.88| 0.00| 33| 32| 96|33| 0| 0| |03| 0|29.28| 0.00| 51| 49| 93|20| 5| 11| 0|29.67| 0.00| 36| 34| 93|29| 5| 7| 0|29.89| 0.00| 32| 31| 96|33| 0| 0| |06| 0|29.32| 0.00| 50| 48| 92|20| 7| 19| 16|29.70| 0.00| 34| 31| 90|34| 0| 10| 11|29.92| 0.00| 29| 28| 96|33| 0| 0| |09| 113|29.41| 0.00| 47| 45| 92|23| 7| 20| 285|29.74| 0.00| 35| 31| 84|30| 5| 10| 144|29.96| 0.00| 36| 34| 95|04| 0| 0| |12| 415|29.47| 0.00| 52| 45| 78|19| 7| 12| 378|29.76| 0.00| 39| 29| 69|29| 7| 14| 359|29.97| 0.00| 43| 35| 74|29| 1| 8| |15| 49|29.51| 0.00| 52| 45| 76|19| 1| 9| 211|29.77| 0.00| 39| 32| 76|32| 2| 10| 397|29.98| 0.00| 45| 32| 62|04| 0| 6| |18| 25|29.58| 0.00| 46| 43| 89|29| 0| 6| 190|29.83| 0.00| 36| 34| 91|28| 0| 0| 77|29.99| 0.00| 43| 36| 76|03| 0| 7| |21| 0|29.65| 0.00| 40| 38| 93|04| 0| 4| 0|29.87| 0.00| 34| 32| 94|33| 0| 0| 0|30.01| 0.00| 40| 34| 81|02| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 10 | MAY 11 | MAY 12 | | | | | |00| 0|30.01| 0.00| 38| 34| 86|02| 0| 0| 0|30.05| 0.00| 42| 38| 86|03| 0| 0| 0|30.00| 0.00| 43| 41| 92|30| 0| 0| |03| 0|29.99| 0.00| 38| 34| 87|01| 0| 5| 0|30.03| 0.00| 40| 37| 90|03| 0| 0| 0|30.00| 0.00| 39| 38| 95|30| 0| 0| |06| 14|30.02| 0.00| 34| 31| 89|02| 0| 0| 30|30.04| 0.00| 39| 38| 94|03| 0| 0| 23|30.01| 0.00| 39| 38| 96|30| 0| 0| |09| 517|30.04| 0.00| 45| 35| 68|34| 2| 8| 186|30.03| 0.00| 44| 39| 84|01| 4| 11| 373|30.03| 0.00| 54| 45| 73|21| 0| 8| |12| 329|30.02| 0.00| 49| 37| 61|31| 1| 10| 520|30.01| 0.00| 52| 40| 64|05| 0| 9| 406|30.00| 0.00| 60| 44| 56|08| 1| 10| |15| 457|30.02| 0.00| 51| 35| 53|01| 3| 8| 513|29.96| 0.00| 58| 43| 57|01| 5| 12| 847|29.94| 0.00| 64| 44| 49|11| 0| 7| |18| 162|30.03| 0.00| 49| 37| 63|35| 1| 6| 72|29.97| 0.00| 54| 43| 66|30| 4| 10| 306|29.91| 0.00| 67| 45| 45|06| 0| 7| |21| 0|30.06| 0.00| 44| 37| 77|03| 0| 0| 0|29.98| 0.00| 45| 41| 85|30| 0| 0| 0|29.91| 0.00| 53| 43| 69|03| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 13 | MAY 14 | MAY 15 | | | | | |00| 0|29.90| 0.00| 51| 43| 75|16| 0| 0| 0|29.80| 0.00| 47| 43| 85|20| 1| 5| 0|29.57| 0.00| 45| 43| 96|00| 1| 12| |03| 0|29.90| 0.00| 47| 42| 83|19| 0| 0| 0|29.77| 0.00| 44| 41| 92|19| 1| 5| 0|29.56| 0.00| 44| 43| 96|00| 1| 13| |06| 25|29.90| 0.00| 48| 43| 83|19| 0| 6| 9|29.73| 0.00| 42| 40| 94|22| 0| 0| 0|29.56| 0.00| 46| 44| 96|35| 3| 13| |09| 506|29.90| 0.00| 58| 47| 66|21| 3| 8| 211|29.70| 0.00| 45| 43| 90|22| 0| 2| 67|29.61| 0.00| 47| 46| 96|32| 7| 24| |12| 338|29.88| 0.00| 60| 45| 58|16| 2| 9| 364|29.66| 0.00| 49| 45| 84|19| 1| 6| 650|29.64| 0.00| 56| 48| 73|34| 7| 23| |15| 406|29.83| 0.00| 61| 47| 61|29| 0| 0| 118|29.61| 0.00| 48| 45| 92|35| 0| 0| 475|29.66| 0.00| 62| 46| 56|33| 4| 14| |18| 28|29.80| 0.00| 58| 47| 67|22| 0| 3| 104|29.56| 0.00| 50| 46| 87|04| 0| 6| 113|29.71| 0.00| 61| 49| 65|32| 4| 11| |21| 0|29.82| 0.00| 50| 47| 90|21| 0| 0| 0|29.57| 0.00| 46| 45| 95|35| 1| 5| 0|29.75| 0.00| 59| 48| 67|30| 6| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 16 | MAY 17 | MAY 18 | | | | | |00| 0|29.80| 0.00| 55| 45| 71|31| 3| 12| 0|29.89| 0.00| 52| 47| 83|30| 0| 0| 0|29.75| 0.00| 74| 57| 55|22| 1| 8| |03| 0|29.81| 0.00| 48| 44| 85|26| 0| 0| 0|29.86| 0.00| 52| 48| 87|35| 0| 0| 0|29.73| 0.00| 70| 57| 64|20| 3| 9| |06| 25|29.86| 0.00| 47| 44| 89|31| 0| 0| 21|29.84| 0.00| 58| 49| 72|20| 2| 11| 11|29.74| 0.00| 67| 58| 72|20| 3| 8| |09| 563|29.91| 0.00| 57| 48| 73|27| 0| 8| 473|29.82| 0.00| 68| 50| 53|21| 9| 18| 431|29.73| 0.00| 76| 63| 63|21| 2| 11| |12| 828|29.91| 0.00| 63| 49| 61|26| 0| 10| 791|29.76| 0.00| 79| 58| 48|20| 7| 13| 895|29.68| 0.00| 85| 62| 47|25| 5| 18| |15| 714|29.91| 0.00| 70| 49| 46|33| 3| 11| 712|29.71| 0.00| 86| 59| 40|25| 3| 14| 394|29.63| 0.00| 88| 61| 41|28| 4| 16| |18| 309|29.86| 0.00| 71| 46| 41|31| 0| 6| 139|29.72| 0.00| 82| 56| 40|26| 4| 12| 302|29.58| 0.00| 82| 63| 54|23| 8| 16| |21| 0|29.88| 0.00| 58| 48| 70|30| 0| 0| 0|29.76| 0.00| 77| 56| 49|26| 2| 15| 0|29.61| 0.00| 77| 61| 59|22| 4| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.06 | 0.11 | 0.14 | 0.16 | 0.20 | 0.22 | 0.24 | 0.27 | 0.28 | 0.29 | 0.30 | 0.32 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 01 | 01 | 01 | 01 | 01 | 01 | 01 | 01 | 01 | 01 | 01 | 22 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 0329 | 0336 | 0337 | 0342 | 0354 | 0404 | 0413 | 0438 | 0427 | 0438 | 0454 | 0326 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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
May 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 19 | MAY 20 | MAY 21 | | | | | |00| 0|29.63| 0.00| 69| 60| 73|30| 0| 0| 0|30.15| 0.00| 44| 35| 70|04| 0| 0| 0|30.33| 0.00| 38| 33| 82|02| 0| 0| |03| 0|29.64| 0.00| 68| 58| 70|25| 4| 11| 0|30.20| 0.00| 41| 34| 76|00| 0| 0| 0|30.33| 0.00| 39| 35| 84|02| 0| 0| |06| 18|29.70| 0.00| 63| 56| 76|29| 0| 9| 16|30.28| 0.00| 36| 32| 84|04| 0| 7| 25|30.36| 0.00| 38| 34| 86|03| 0| 0| |09| 118|29.77| 0.00| 58| 54| 88|32| 4| 13| 554|30.34| 0.00| 48| 32| 54|05| 2| 9| 241|30.34| 0.00| 54| 41| 60|04| 0| 1| |12| 176|29.87| 0.00| 50| 47| 92|00| 0| 10| 833|30.34| 0.00| 55| 35| 46|32| 1| 8| 487|30.30| 0.00| 64| 38| 38|25| 3| 9| |15| 318|29.94| 0.00| 53| 47| 78|29| 4| 13| 770|30.33| 0.00| 61| 38| 42|31| 0| 2| 519|30.21| 0.00| 68| 38| 34|04| 0| 1| |18| 325|29.98| 0.00| 58| 45| 63|00| 0| 9| 265|30.32| 0.00| 62| 32| 32|30| 2| 9| 62|30.17| 0.00| 61| 45| 56|27| 0| 0| |21| 0|30.04| 0.00| 49| 42| 76|02| 0| 0| 0|30.33| 0.00| 44| 35| 70|02| 0| 0| 0|30.13| 0.00| 57| 46| 67|27| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 22 | MAY 23 | MAY 24 | | | | | |00| 0|30.10| 0.04| 52| 48| 87|21| 0| 5| 0|29.90| 0.00| 53| 52| 96|23| 3| 9| 0|29.76| 0.00| 53| 51| 92|20| 0| 0| |03| 0|30.05| 0.04| 51| 50| 95|18| 0| 1| 0|29.89| 0.00| 49| 46| 90|21| 0| 6| 0|29.73| 0.00| 49| 48| 96|20| 0| 0| |06| 9|30.03| 0.22| 46| 44| 94|21| 6| 14| 40|29.88| 0.00| 48| 45| 89|21| 0| 5| 35|29.73| 0.00| 47| 47| 97|20| 0| 0| |09| 49|30.02| 0.00| 47| 45| 93|18| 5| 15| 438|29.89| 0.00| 56| 48| 73|21| 0| 5| 425|29.74| 0.00| 61| 53| 75|07| 0| 0| |12| 244|29.97| 0.00| 52| 48| 87|20| 5| 16| 578|29.86| 0.00| 62| 47| 58|25| 2| 9| 466|29.73| 0.00| 68| 55| 63|28| 4| 7| |15| 33|29.92| 0.10| 50| 48| 94|20| 3| 11| 367|29.79| 0.00| 67| 52| 58|14| 5| 15| 861|29.70| 0.00| 75| 53| 46|26| 0| 0| |18| 32|29.88| 0.00| 52| 51| 94|20| 4| 13| 93|29.76| 0.00| 63| 55| 73|20| 0| 0| 60|29.71| 0.00| 68| 58| 70|11| 0| 0| |21| 0|29.88| 0.00| 53| 51| 95|20| 5| 12| 0|29.76| 0.00| 57| 53| 86|20| 0| 0| 0|29.75| 0.00| 62| 56| 80|11| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 25 | MAY 26 | MAY 27 | | | | | |00| 0|29.77| 0.00| 58| 52| 83|11| 0| 0| 0|29.60| 0.00| 52| 51| 97|03| 0| 0| | | | | | | | | | |03| 0|29.76| 0.00| 54| 51| 88|21| 0| 0| | | | | | | | | | | | | | | | | | | |06| 32|29.78| 0.00| 57| 51| 78|15| 0| 4| | | | | | | | | | | | | | | | | | | |09| 174|29.77| 0.00| 60| 52| 76|22| 0| 5| | | | | | | | | | | | | | | | | | | |12| 248|29.74| 0.00| 63| 50| 61|19| 0| 9| | | | | | | | | | | | | | | | | | | |15| 98|29.69| 0.00| 62| 53| 73|19| 0| 6| | | | | | | | | | | | | | | | | | | |18| 26|29.65| 0.00| 56| 54| 92|30| 0| 0| | | | | | | | | | | | | | | | | | | |21| 0|29.64| 0.00| 53| 51| 95|03| 0| 0| | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 28 | MAY 29 | MAY 30 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 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|29.831| 49| 44| 84| 1.0| 23 | 0.7| |03| 0|29.826| 47| 43| 88| 1.5| 22 | 1.2| |06| 16|29.837| 46| 42| 89| 1.5| 21 | 1.2| |09| 270|29.851| 52| 45| 79| 2.7| 24 | 1.4| |12| 443|29.840| 57| 45| 67| 2.7| 24 | 1.5| |15| 381|29.813| 59| 46| 63| 2.0| 28 | 0.7| |18| 126|29.802| 58| 46| 67| 1.9| 26 | 1.1| |21| 0|29.821| 52| 45| 77| 1.6| 22 | 1.2| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
May 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| | |0.02|0.20|0.08|0.01|0.02|0.09| |0.12| |0.02| | | | | | | | | |0.12|0.11|0.05|01 02| | | | | | |0.01|0.03| | | |0.02| | | | | |0.04|0.02| | | | | |02 03| | | | | | | | | | | |0.01| | |0.01| | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05|0.01|0.03|0.01|0.01|0.02|0.01|0.02|0.01| | | | | |0.03|0.09|0.06|0.06| | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | |0.02| | | | |0.02|0.04| | | | | | | | | | | | | | |06 07| |0.08|0.02| | | | | |0.04|0.03| | | | |0.01| | | |0.03|0.01| |0.01| | |07 08| |0.01| | | | | | | | | | | | | | | |0.01| |0.01| | | | |08 09| | | | | | | |0.01|0.03| | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | |0.01|13 14| |0.02| |0.02|0.02| |0.02| | | | | | | |0.04| | | |0.03|0.01| |0.02|0.02|0.02|14 15|0.03|0.07|0.05|0.02|0.01|0.02|0.05|0.01| | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | |0.01| | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | |0.03|21 22|0.09|0.11|0.08|0.08|0.04|0.08| |0.01|0.01| | |0.01|0.01|0.02|0.06|0.14|0.01| | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | |0.05|0.03| |0.03|0.02| | | |0.04|25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 31| | | | | | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.13|0.32|0.18|0.35|0.17|0.12|0.12|0.16|0.10|0.19|0.00|0.06|0.01|0.05|0.21|0.25|0.10|0.06|0.11|0.05|0.00|0.15|0.13|0.15|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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