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  Friday April 24, 2015

Westford: April 2015
LOCAL CLIMATOLOGICAL DATA Monthly Summary
April 2015
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 | Minute| 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| 35.0 | 15.6*| 25.3*| 25.8 | 10| 51| 39| 0|.........| 3| 0.00| 0.0| 30.14| 29.84|30.021| 1.0| 0.9|330| 15|WNW| 8|298| 230 | |02| 55.3 | 20.5 | 37.9 | 39.1 | 20| 47| 27| 0|.........| 2| 0.00| 0.0| 30.14| 29.62|29.923| 5.3| 5.3|203| 32| S| 16|216| 148 | |03| 62.9 | 41.6 | 52.3 | 50.3 | 37| 63| 12| 0|.........| 1| 0.02| 0.0| 29.73| 29.61|29.670| 2.4| 2.1|242| 29|SSW| 15|211| 219 | |04| 42.8 | 24.0 | 33.4 | 30.7 | 23| 76| 31| 0|.........| 1| 0.46| 1.0| 29.97| 29.50|29.749| 3.0| 2.9|331| 24| N| 13|304| 109 | |05| 35.7 | 23.2 | 29.5 | 29.1 | 18| 64| 35| 0|.........| T| 0.00| 0.0| 30.21| 29.92|30.035| 2.0| 1.8|300| 24|WNW| 15|306| 228 | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 35.9 | 21.9 | 28.9 | 29.2 | 26| 88| 36| 0|.........| T| 0.07| 0.8| 30.30| 30.18|30.237| 0.8| 0.7|206| 19|SSW| 11|215| 67 | |07| 42.8 | 25.5 | 34.2 | 33.7 | 26| 76| 30| 0|.........| T| 0.13| 0.0| 30.39| 30.20|30.309| 0.5| 0.5|341| 12| NW| 6|318| 211 | |08| 43.7 | 23.5 | 33.6 | 33.0 | 18| 57| 31| 0|.........| 2| 0.00| 1.8| 30.43| 30.27|30.359| 0.9| 0.7|179| 18| S| 11|201| 144 | |09| 41.0 | 28.8 | 34.9 | 34.3 | 29| 83| 30| 0|.........| T| 0.27| 0.4| 30.30| 30.00|30.227| 3.6| 3.6|184| 27| S| 12|187| 131 | |10| 50.3 | 34.0 | 42.2 | 42.6 | 40| 90| 23| 0|.........| T| 0.22| 0.0| 30.00| 29.48|29.688| 7.7| 7.4|207| 38|SSW| 20|211| 89 | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 47.4 | 35.1 | 41.3 | 40.1 | 29| 65| 24| 0|.........| 0| T | T | 30.07| 29.61|29.816| 5.7| 5.3|278| 30|WSW| 16|294| 100 | |12| 64.3 | 32.2 | 48.3 | 48.0 | 29| 50| 17| 0|.........| 0| 0.00| 0.0| 30.19| 30.07|30.145| 2.6| 2.4|237| 18|WSW| 9|227| 254 | |13| 72.8*| 39.7 | 56.3*| 58.6 | 35| 43| 8| 0|.........| 0| 0.00| 0.0| 30.21| 29.79|30.055| 5.4| 5.4|205| 38| S| 19|219| 245 | |14| 61.6 | 39.4 | 50.5 | 51.9 | 34| 55| 14| 0|.........| 0| 0.18| 0.0| 30.08| 29.81|30.004| 5.0| 4.5|272| 35|SSW| 19|210| 232 | |15| 54.9 | 34.6 | 44.8 | 45.7 | 23| 42| 20| 0|.........| 0| 0.00| 0.0| 30.37| 30.04|30.192| 1.7| 1.6|330| 22|WNW| 14|305| 264 | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 64.8 | 28.5 | 46.7 | 49.0 | 20| 35| 18| 0|.........| 0| 0.00| 0.0| 30.42| 30.04|30.274| 2.7| 2.7|209| 23| S| 11|213| 251 | |17| 65.4 | 43.3 | 54.3 | 53.2 | 41| 66| 11| 0|.........| 0| 0.25| 0.0| 30.04| 29.77|29.874| 3.4| 3.0|231| 23|SSW| 12|200| 173 | |18| 62.8 | 37.1 | 49.9 | 46.8 | 35| 64| 15| 0|.........| 0| 0.04| 0.0| 30.14| 29.76|29.915| 1.1| 0.4|303| 23| W| 11|204| 198 | |19| 54.5 | 35.1 | 44.8 | 43.4 | 30| 61| 20| 0|.........| 0| 0.00| 0.0| 30.28| 30.06|30.186| 0.8| 0.7|331| 15|NNW| 9|287| 264 | |20| 50.8 | 37.7 | 44.3 | 45.8 | 35| 67| 20| 0|.........| 0| 0.22| 0.0| 30.07| 29.63|29.849| 4.3| 4.3|181| 31| S| 14|189| 99 | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 51.8 | 39.6 | 45.7 | 46.7 | 42| 84| 19| 0|.........| 0| 0.50| 0.0| 29.67| 29.47|29.561| 2.2| 1.7|219| 19|SSW| 10|205| 92 | |22| 52.5 | 35.5 | 44.0 | 42.7 | 38| 83| 20| 0|.........| 0| 0.50| 0.0| 29.67| 29.50|29.581| 2.1| 2.0|208| 23| SW| 11|202| 86 | |23| 43.6 | 32.3 | 37.9 | 37.1 | 28| 73| 27| 0|.........| T| 0.02| 0.1| 29.65| 29.48|29.553| 4.2| 4.1|271| 25| W| 14|297| 171 | |24| 32.5 | 32.4 | 32.5 | 32.4 | 31| 95| 32| 0|.........| 0| 0.00| 0.0| 29.65| 29.65|29.648| 0.0| 0.0| 0| 0| SW| 0|221| 0 | |25| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |26| | | | | | | | | | | | | | | | | | | | | | | | |27| | | | | | | | | | | | | | | | | | | | | | | | |28| | | | | | | | | | | | | | | | | | | | | | | | |29| | | | | | | | | | | | | | | | | | | | | | | | |30| | | | | | | | | | | | | | | | | | | | | | | | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1225.1| 761.1|------|------|---|----| 559| 0| Days | 2.88| 4.1| 30.43| 29.47|29.953| 2.9| 2.0|235| 38|SSW| 20|211| ---- | +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 51.0| 31.7| 41.4 | 41.2 | 29|65.8|----|----|≥.01 Inch 13| 7.77| 86.2| 8 | 21 |------|----|----|---| 10+ | 10 | 167| +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+ | | 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 |7856| 0|Thunder 0|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 0.52| 22-23| 1.8 | 8 | 3 | 1 | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 12 | 0 |----|----| Clear 4 Partly Cloudy 9 Cloudy 9 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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 are: 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
April 2015: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 1 | APR 2 | APR 3 | | | | | |01| 0|29.84| 0.00| 25| 8| 47|31| 0| 2| 0|30.13| 0.00| 21| 12| 66|24| 0| 0| 0|29.63| 0.00| 51| 37| 59|21| 6| 20| |04| 0|29.88| 0.00| 21| 12| 66|00| 0| 2| 0|30.12| 0.00| 24| 10| 55|20| 1| 5| 0|29.65| 0.00| 47| 43| 84|23| 4| 12| |07| 14|29.97| 0.00| 17| 8| 67|05| 0| 1| 18|30.12| 0.00| 29| 10| 45|19| 2| 10| 21|29.71| 0.00| 44| 42| 91|22| 0| 4| |10| 485|30.04| 0.00| 26| 8| 46|02| 1| 12| 62|30.07| 0.00| 33| 11| 41|20| 4| 11| 503|29.71| 0.00| 51| 44| 77|28| 0| 6| |13| 738|30.08| 0.00| 29| 9| 43|30| 4| 12| 436|29.91| 0.00| 41| 22| 47|19| 8| 13| 747|29.71| 0.00| 59| 35| 41|21| 2| 12| |16| 519|30.08| 0.00| 33| 11| 39|31| 4| 13| 508|29.76| 0.00| 53| 29| 40|19| 10| 24| 568|29.68| 0.00| 63| 29| 28|30| 3| 13| |19| 14|30.11| 0.00| 31| 13| 47|33| 0| 0| 19|29.72| 0.00| 53| 30| 40|19| 5| 18| 11|29.66| 0.00| 49| 31| 51|04| 0| 0| |22| 0|30.12| 0.00| 24| 12| 59|02| 0| 0| 0|29.65| 0.00| 53| 32| 45|20| 7| 18| 0|29.66| 0.00| 44| 32| 61|06| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 4 | APR 5 | APR 6 | | | | | |01| 0|29.59| 0.00| 40| 31| 70|08| 0| 0| 0|29.95| 0.00| 26| 8| 45|22| 0| 1| 0|30.23| 0.00| 26| 21| 82|36| 0| 0| |04| 0|29.52| 0.14| 38| 36| 94|08| 0| 0| 0|29.94| 0.00| 26| 21| 81|26| 3| 8| 0|30.25| 0.00| 24| 22| 92|01| 0| 0| |07| 5|29.54| 0.00| 31| 30| 95|33| 7| 19| 35|29.99| 0.00| 26| 20| 77|26| 1| 12| 12|30.29| 0.00| 22| 20| 92|07| 0| 0| |10| 49|29.70| 0.00| 25| 23| 93|33| 10| 22| 635|30.05| 0.00| 29| 15| 55|30| 8| 20| 174|30.29| 0.00| 31| 24| 74|18| 4| 8| |13| 153|29.82| 0.00| 25| 22| 91|31| 4| 15| 805|30.04| 0.00| 32| 21| 62|35| 2| 12| 204|30.25| 0.00| 34| 27| 74|23| 6| 15| |16| 555|29.86| 0.00| 31| 20| 64|31| 9| 20| 517|30.03| 0.00| 35| 22| 58|01| 2| 12| 67|30.21| 0.00| 32| 30| 93|19| 0| 5| |19| 18|29.91| 0.00| 30| 17| 58|28| 1| 8| 18|30.06| 0.00| 30| 19| 63|01| 0| 2| 5|30.19| 0.00| 32| 30| 96|19| 0| 0| |22| 0|29.96| 0.00| 26| 8| 46|26| 0| 1| 0|30.17| 0.00| 27| 17| 64|01| 0| 3| 0|30.21| 0.00| 31| 30| 96|19| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 7 | APR 8 | APR 9 | | | | | |01| 0|30.21| 0.00| 32| 31| 97|19| 0| 0| 0|30.39| 0.00| 24| 13| 62|05| 0| 0| 0|30.30| 0.00| 29| 27| 93|18| 0| 0| |04| 0|30.22| 0.00| 31| 31| 97|19| 0| 0| 0|30.41| 0.00| 24| 13| 63|05| 0| 0| 0|30.28| 0.00| 29| 26| 89|18| 1| 5| |07| 16|30.29| 0.00| 29| 28| 97|19| 0| 0| 42|30.42| 0.00| 25| 12| 57|05| 0| 0| 5|30.30| 0.00| 30| 27| 89|17| 0| 0| |10| 348|30.31| 0.06| 34| 31| 89|35| 0| 5| 473|30.42| 0.00| 38| 12| 34|11| 1| 7| 353|30.28| 0.00| 36| 29| 76|18| 4| 12| |13| 802|30.34| 0.00| 39| 33| 77|34| 1| 11| 406|30.35| 0.00| 42| 17| 35|19| 4| 10| 427|30.27| 0.00| 39| 31| 73|19| 9| 20| |16| 566|30.33| 0.00| 42| 26| 53|34| 0| 8| 130|30.29| 0.00| 42| 17| 37|16| 0| 8| 336|30.20| 0.00| 40| 32| 71|17| 6| 15| |19| 23|30.35| 0.00| 37| 16| 41|35| 0| 2| 9|30.29| 0.00| 35| 26| 70|20| 6| 16| 18|30.16| 0.00| 36| 31| 81|17| 8| 18| |22| 0|30.39| 0.00| 27| 14| 58|05| 0| 0| 0|30.31| 0.00| 30| 28| 93|15| 0| 0| 0|30.09| 0.00| 36| 32| 85|18| 7| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 10 | APR 11 | APR 12 | | | | | |01| 0|29.98| 0.06| 35| 33| 92|19| 4| 16| 0|29.62| 0.00| 43| 33| 68|26| 15| 23| 0|30.08| 0.00| 37| 28| 68|24| 2| 10| |04| 0|29.85| 0.00| 35| 34| 95|20| 9| 22| 0|29.63| 0.00| 40| 30| 67|26| 7| 22| 0|30.09| 0.00| 34| 25| 71|22| 3| 6| |07| 33|29.80| 0.00| 36| 35| 95|20| 10| 19| 11|29.68| 0.00| 37| 29| 72|26| 6| 23| 26|30.15| 0.00| 33| 27| 76|22| 5| 11| |10| 497|29.69| 0.00| 45| 41| 85|20| 12| 23| 86|29.78| 0.00| 36| 31| 84|30| 5| 15| 568|30.18| 0.00| 47| 29| 50|23| 4| 12| |13| 26|29.63| 0.00| 46| 43| 90|20| 8| 26| 146|29.86| 0.00| 39| 31| 72|29| 2| 13| 791|30.17| 0.00| 57| 34| 41|23| 2| 12| |16| 47|29.50| 0.00| 47| 46| 95|20| 6| 20| 575|29.90| 0.00| 45| 28| 52|31| 7| 18| 555|30.14| 0.00| 63| 29| 27|29| 6| 13| |19| 9|29.51| 0.00| 50| 48| 93|21| 8| 19| 28|29.96| 0.00| 44| 27| 51|28| 0| 5| 37|30.14| 0.00| 61| 30| 31|25| 0| 0| |22| 0|29.61| 0.00| 45| 38| 75|24| 4| 16| 0|30.04| 0.00| 39| 27| 64|22| 1| 8| 0|30.19| 0.00| 51| 29| 43|26| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 13 | APR 14 | APR 15 | | | | | |01| 0|30.19| 0.00| 41| 30| 65|26| 0| 0| 0|29.81| 0.00| 61| 45| 57|21| 10| 35| 0|30.06| 0.00| 44| 26| 50|28| 0| 6| |04| 0|30.19| 0.00| 41| 30| 64|17| 0| 2| 0|29.96| 0.00| 48| 44| 85|25| 5| 16| 0|30.05| 0.00| 40| 24| 54|28| 0| 0| |07| 26|30.20| 0.00| 48| 32| 55|19| 2| 10| 21|30.03| 0.00| 40| 36| 87|21| 1| 8| 21|30.14| 0.00| 37| 25| 61|32| 0| 0| |10| 580|30.17| 0.00| 61| 34| 37|17| 4| 18| 585|30.05| 0.00| 51| 35| 55|25| 5| 18| 591|30.18| 0.00| 49| 26| 40|31| 2| 14| |13| 805|30.08| 0.00| 68| 33| 28|21| 8| 22| 211|30.06| 0.00| 55| 35| 46|25| 6| 19| 803|30.21| 0.00| 52| 27| 39|32| 6| 14| |16| 519|29.98| 0.00| 72| 37| 28|20| 8| 24| 568|30.01| 0.00| 60| 27| 29|29| 10| 20| 578|30.23| 0.00| 54| 22| 29|34| 3| 15| |19| 23|29.87| 0.00| 68| 40| 36|20| 4| 14| 44|29.99| 0.00| 57| 29| 35|29| 3| 7| 42|30.27| 0.00| 51| 18| 27|32| 0| 5| |22| 0|29.82| 0.00| 64| 41| 42|21| 13| 32| 0|30.05| 0.00| 49| 26| 41|26| 3| 9| 0|30.34| 0.00| 41| 18| 40|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 16 | APR 17 | APR 18 | | | | | |01| 0|30.37| 0.00| 37| 19| 49|32| 0| 0| 0|30.02| 0.00| 55| 26| 33|20| 6| 16| 0|29.88| 0.00| 48| 40| 74|36| 0| 2| |04| 0|30.38| 0.00| 33| 20| 58|31| 0| 0| 0|29.97| 0.05| 44| 40| 86|21| 1| 10| 0|29.88| 0.00| 43| 30| 61|05| 0| 0| |07| 28|30.41| 0.00| 31| 19| 61|21| 1| 5| 7|29.92| 0.06| 44| 42| 93|20| 4| 9| 53|29.89| 0.00| 39| 31| 74|05| 0| 0| |10| 564|30.39| 0.00| 49| 20| 31|20| 1| 6| 492|29.87| 0.00| 48| 47| 96|21| 8| 13| 207|29.88| 0.00| 49| 31| 48|32| 0| 0| |13| 803|30.31| 0.00| 58| 20| 23|18| 4| 9| 355|29.82| 0.00| 56| 48| 76|27| 3| 13| 193|29.76| 0.00| 61| 38| 42|23| 5| 16| |16| 492|30.19| 0.00| 64| 18| 17|20| 8| 18| 200|29.79| 0.00| 61| 44| 53|26| 2| 11| 656|29.88| 0.00| 54| 41| 62|35| 2| 11| |19| 28|30.10| 0.00| 60| 19| 20|18| 6| 16| 58|29.79| 0.00| 61| 40| 45|32| 0| 7| 56|29.98| 0.00| 46| 36| 67|02| 2| 16| |22| 0|30.09| 0.00| 57| 24| 28|21| 7| 14| 0|29.84| 0.00| 54| 39| 56|25| 2| 10| 0|30.09| 0.00| 41| 35| 78|35| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.04 | 0.07 | 0.09 | 0.10 | 0.13 | 0.17 | 0.20 | 0.24 | 0.27 | 0.30 | 0.32 | 0.34 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 09 | 14 | 14 | 14 | 20 | 20 | 20 | 22 | 22 | 22 | 22 | 22 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1040 | 0302 | 0302 | 0300 | 1002 | 1008 | 1016 | 1942 | 1942 | 1954 | 1954 | 1954 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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
April 2015: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 19 | APR 20 | APR 21 | | | | | |01| 0|30.15| 0.00| 39| 31| 74|33| 3| 14| 0|30.05| 0.00| 47| 23| 39|15| 0| 4| 0|29.59| 0.00| 49| 43| 79|17| 3| 9| |04| 0|30.19| 0.00| 36| 32| 83|33| 1| 9| 0|30.00| 0.00| 47| 33| 58|17| 1| 9| 0|29.55| 0.00| 48| 43| 83|20| 4| 11| |07| 19|30.25| 0.00| 36| 31| 83|01| 0| 0| 42|29.98| 0.00| 46| 31| 55|14| 1| 14| 21|29.48| 0.06| 46| 44| 95|17| 0| 4| |10| 617|30.26| 0.00| 43| 29| 57|33| 3| 10| 25|29.92| 0.40| 39| 35| 86|16| 5| 10| 100|29.50| 0.00| 48| 47| 96|18| 2| 11| |13| 814|30.25| 0.00| 48| 31| 50|32| 3| 13| 271|29.81| 0.00| 44| 36| 71|18| 5| 15| 141|29.54| 0.04| 47| 44| 91|26| 1| 7| |16| 552|30.18| 0.00| 53| 31| 42|01| 0| 5| 174|29.75| 0.00| 48| 38| 70|17| 8| 19| 258|29.57| 0.07| 47| 44| 88|23| 3| 9| |19| 49|30.15| 0.00| 50| 30| 47|35| 0| 0| 32|29.71| 0.00| 47| 41| 79|18| 8| 21| 62|29.61| 0.00| 50| 36| 58|22| 1| 5| |22| 0|30.12| 0.00| 40| 28| 63|01| 0| 0| 0|29.66| 0.00| 49| 42| 79|18| 1| 9| 0|29.66| 0.00| 41| 35| 80|21| 1| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 22 | APR 23 | APR 24 | | | | | |01| 0|29.65| 0.00| 39| 35| 84|20| 0| 6| 0|29.49| 0.00| 37| 34| 88|26| 7| 10| | | | | | | | | | |04| 0|29.64| 0.00| 40| 36| 86|21| 5| 13| 0|29.48| 0.00| 36| 32| 86|25| 5| 12| | | | | | | | | | |07| 56|29.66| 0.00| 38| 35| 88|19| 3| 8| 44|29.51| 0.00| 35| 32| 87|26| 5| 13| | | | | | | | | | |10| 422|29.60| 0.00| 50| 38| 64|21| 5| 14| 236|29.55| 0.00| 37| 29| 73|28| 4| 15| | | | | | | | | | |13| 269|29.55| 0.00| 51| 37| 58|22| 5| 16| 670|29.56| 0.00| 40| 27| 61|32| 3| 22| | | | | | | | | | |16| 127|29.53| 0.05| 44| 42| 92|21| 0| 6| 299|29.57| 0.00| 42| 26| 52|25| 6| 18| | | | | | | | | | |19| 0|29.52| 0.23| 43| 42| 95|21| 2| 6| 37|29.61| 0.00| 38| 22| 51|29| 3| 9| | | | | | | | | | |22| 0|29.51| 0.00| 38| 37| 95|34| 0| 0| 0|29.64| 0.00| 33| 30| 92|23| 0| 5| | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 25 | APR 26 | APR 27 | | | | | |01| | | | | | | | | | | | | | | | | | | | | | | | | | | | |04| | | | | | | | | | | | | | | | | | | | | | | | | | | | |07| | | | | | | | | | | | | | | | | | | | | | | | | | | | |10| | | | | | | | | | | | | | | | | | | | | | | | | | | | |13| | | | | | | | | | | | | | | | | | | | | | | | | | | | |16| | | | | | | | | | | | | | | | | | | | | | | | | | | | |19| | | | | | | | | | | | | | | | | | | | | | | | | | | | |22| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 28 | APR 29 | APR 30 | | | | | |01| | | | | | | | | | | | | | | | | | | | | | | | | | | | |04| | | | | | | | | | | | | | | | | | | | | | | | | | | | |07| | | | | | | | | | | | | | | | | | | | | | | | | | | | |10| | | | | | | | | | | | | | | | | | | | | | | | | | | | |13| | | | | | | | | | | | | | | | | | | | | | | | | | | | |16| | | | | | | | | | | | | | | | | | | | | | | | | | | | |19| | | | | | | | | | | | | | | | | | | | | | | | | | | | |22| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +------------------------------------------+---------------------------------------+---------------------------------------+
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 | +--+----+------+---+---+---+-----+----+----+ |01| 0|29.965| 38| 28| 67| 2.4| 23 | 1.9| |04| 0|29.962| 36| 29| 76| 2.2| 23 | 1.9| |07| 25|29.988| 35| 28| 78| 2.1| 23 | 1.4| |10| 376|29.996| 41| 29| 65| 4.0| 24 | 2.2| |13| 479|29.973| 46| 30| 58| 4.4| 23 | 2.9| |16| 407|29.941| 49| 30| 53| 4.5| 25 | 2.4| |19| 28|29.942| 46| 29| 56| 2.5| 20 | 2.0| |22| 0|29.965| 41| 28| 64| 2.0| 22 | 1.8| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
April 2015: 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| |0.02| | | | | | | | | | | | | | | | | | | | | | |03 04| | |0.06|0.16|0.06|0.07|0.03| | | | |0.01|0.01|0.02|0.02|0.01|0.01| | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | |0.01|0.01| | |0.01|0.01| | |0.01|0.01|0.01| | | | |06 07| |0.01| | | | | | | |0.06|0.05|0.01| | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | |0.01|0.10|0.07|0.01| | | | | | | | | |0.02|0.06|09 10|0.04|0.05| |0.01| |0.01| | | | | | | |0.08|0.02|0.01| | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| |0.01|0.13|0.04| | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | |0.09|0.05|0.03|0.02|0.06| | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | |0.02|0.02| | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | |0.14|0.08| | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | |0.04|0.07|0.03|0.02| |0.04|0.01|0.03|0.04|0.14|0.06|0.02| | | | | | | | |21 22| | | | | | | | | | | | | | |0.05|0.06|0.04|0.04|0.11|0.18|0.02| | | |22 23| | | | | |0.02| | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.04|0.09|0.19|0.30|0.15|0.20|0.08|0.08|0.00|0.26|0.25|0.12|0.06|0.27|0.18|0.10|0.05|0.05|0.12|0.19|0.02|0.00|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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