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  Sunday April 21, 2019

Westford: April 2019
LOCAL CLIMATOLOGICAL DATA Monthly Summary
April 2019
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| 34.7 | 20.4 | 27.5*| 27.1 | 15| 63| 37| 0|.........| 1| 0.01| 1.2| 30.28| 29.78|30.055| 5.4| 5.3|306| 27|WNW| 17|288| 230 | |02| 46.9 | 21.5 | 34.2 | 35.2 | 19| 52| 30| 0|.........| T| 0.00| 0.0| 30.31| 30.07|30.214| 2.6| 2.6|208| 26|SSW| 13|203| 205 | |03| 50.8 | 31.2 | 41.0 | 38.6 | 25| 59| 24| 0|.........| T| 0.01| T| 30.07| 29.69|29.886| 5.2| 4.5|259| 36| W| 21|269| 164 | |04| 34.9 | 25.0 | 30.0 | 29.7 | 13| 49| 35| 0|.........| T| 0.00| 0.0| 30.47| 30.01|30.261| 7.2| 7.1|300| 33| W| 22|290| 211 | |05| 40.8 | 15.9*| 28.3 | 29.6 | 16| 59| 36| 0|.........| T| 0.00| T| 30.49| 30.12|30.351| 2.5| 2.5|207| 23| S| 12|205| 156 | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 44.4 | 31.9 | 38.2 | 36.8 | 34| 90| 27| 0|.........| T| 0.12| T| 30.18| 30.07|30.118| 3.7| 3.5|215| 25| S| 13|208| 65 | |07| 51.7 | 31.4 | 41.5 | 41.1 | 34| 77| 23| 0|.........| T| 0.02| 0.0| 30.24| 30.05|30.164| 0.2| 0.1|251| 8|SSW| 6|297| 121 | |08| 43.2 | 31.2 | 37.2 | 38.7 | 37| 92| 28| 0|.........| T| 0.30| 0.0| 30.05| 29.60|29.774| 2.9| 2.6|185| 26|SSW| 13|200| 41 | |09| 39.6 | 27.6 | 33.6 | 31.7 | 30| 94| 31| 0|.2...6...| T| 0.22| 0.5| 29.79| 29.43|29.626| 1.2| 0.9|287| 19|NNW| 11|309| 57 | |10| 36.4 | 26.6 | 31.5 | 29.9 | 26| 85| 33| 0|.........| T| 0.03| 0.2| 30.07| 29.67|29.857| 1.3| 1.3|320| 19|NNW| 10|324| 100 | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 45.1 | 24.9 | 35.0 | 33.6 | 23| 66| 30| 0|.........| 0| 0.00| 0.0| 30.26| 30.06|30.199| 0.2| 0.2|322| 18| NW| 9|305| 248 | |12| 57.6 | 30.9 | 44.3 | 45.6 | 36| 71| 20| 0|.........| T| 0.05| 0.0| 30.26| 29.88|30.081| 3.3| 3.3|200| 27| SW| 14|204| 129 | |13| 68.3 | 47.6 | 58.0*| 57.8 | 41| 59| 7| 0|.........| 0| 0.04| 0.0| 29.94| 29.85|29.895| 5.5| 4.9|244| 27|WNW| 16|262| 220 | |14| 49.6 | 34.4 | 42.0 | 42.1 | 31| 67| 23| 0|.........| 0| 0.21| 0.0| 30.01| 29.45|29.853| 0.3| 0.2|320| 14|NNW| 6|312| 104 | |15| 52.9 | 33.0 | 43.0 | 41.7 | 40| 93| 22| 0|.........| 0| 0.33| T| 29.62| 29.13|29.311| 3.6| 3.0|287| 30|WNW| 18|286| 46 | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 43.8 | 32.3 | 38.0 | 37.6 | 30| 73| 27| 0|.........| 0| 0.00| 0.0| 30.01| 29.61|29.843| 4.7| 4.6|306| 27|WNW| 17|291| 84 | |17| 56.8 | 30.3 | 43.5 | 44.1 | 26| 53| 21| 0|.........| 0| 0.00| 0.0| 30.16| 30.01|30.105| 0.5| 0.5|321| 14| NW| 9|289| 277 | |18| 56.9 | 35.8 | 46.3 | 47.6 | 36| 64| 18| 0|.........| 0| 0.06| 0.0| 30.12| 29.65|29.898| 4.6| 4.6|196| 32|SSW| 17|204| 109 | |19| 70.9*| 40.6 | 55.8 | 55.6 | 50| 83| 9| 0|.2.......| 0| 0.22| 0.0| 29.73| 29.57|29.617| 4.3| 4.0|210| 33| SW| 15|220| 113 | |20| 51.8 | 39.2 | 45.5 | 43.1 | 42| 96| 19| 0|.2.......| 0| 0.72| 0.0| 29.83| 29.60|29.733| 0.5| 0.3|256| 12| W| 8|280| 50 | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | |22| | | | | | | | | | | | | | | | | | | | | | | | |23| | | | | | | | | | | | | | | | | | | | | | | | |24| | | | | | | | | | | | | | | | | | | | | | | | |25| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |26| | | | | | | | | | | | | | | | | | | | | | | | |27| | | | | | | | | | | | | | | | | | | | | | | | |28| | | | | | | | | | | | | | | | | | | | | | | | |29| | | | | | | | | | | | | | | | | | | | | | | | |30| | | | | | | | | | | | | | | | | | | | | | | | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | 977.1| 611.7|------|------|---|----| 500| 0| Days | 2.34| 1.9| 30.49| 29.18|30.095| 2.9| 2.0|251| 36| W| 22|290| ---- | +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 48.9| 30.6| 39.7 | 39.9 | 31|73.4|----|----|≥.01 Inch 14|12.98|122.2| 5 | 15 |------|----|----|---| 3 | 4 | 130| +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+ | | Season |Snow, Ice | | | | Number of Days | to Date |≥1.0 Inch 1| Greatest in 24 Hours and Dates | Greatest Depth on Ground | +------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice | | Max Temperature | Min Temperature |7623| 0|Thunder 0|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 3| 0.94| 19-20| 1.2 | 1 | 1 | 1 | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 14 | 0 |----|----| Clear 2 Partly Cloudy 5 Cloudy 12 | +--------+---------+--------+--------+----+----+------------------------------------------+ NOTES: Units: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches. Column 4A: value is (MAX+MIN) / 2. Data in columns 4B, 5, 6, 15, 16, 23 are updated continuously, there by achieving a "true" mean. 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.
OBSERVATIONS AT 3-HOUR INTERVALS
April 2019: 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 | | | | | |00| 0|29.78| 0.00| 28| 26| 92|31| 3| 11| 0|30.28| 0.00| 27| 17| 65|21| 1| 5| 0|30.07| 0.00| 39| 22| 50|19| 0| 5| |03| 0|29.83| 0.00| 26| 23| 90|33| 8| 20| 0|30.28| 0.00| 24| 16| 71|20| 0| 0| 0|30.02| 0.00| 37| 21| 51|18| 0| 6| |06| 0|29.92| 0.00| 22| 15| 74|30| 11| 19| 0|30.29| 0.00| 24| 15| 70|18| 0| 4| 0|29.95| 0.00| 36| 22| 57|18| 0| 7| |09| 369|30.04| 0.00| 22| 13| 67|32| 7| 18| 338|30.31| 0.00| 33| 18| 54|19| 3| 15| 297|29.84| 0.00| 39| 26| 60|18| 3| 11| |12| 294|30.11| 0.00| 26| 11| 53|32| 8| 20| 682|30.24| 0.00| 40| 19| 42|19| 3| 22| 721|29.73| 0.00| 49| 30| 48|21| 4| 12| |15| 682|30.13| 0.00| 31| 11| 43|28| 8| 14| 520|30.16| 0.00| 45| 20| 37|21| 1| 13| 69|29.77| 0.00| 41| 31| 70|29| 17| 35| |18| 218|30.16| 0.00| 34| 13| 41|30| 3| 13| 72|30.12| 0.00| 44| 19| 36|21| 2| 9| 204|29.83| 0.00| 40| 29| 66|28| 8| 24| |21| 0|30.23| 0.00| 30| 15| 54|23| 0| 7| 0|30.11| 0.00| 38| 24| 58|20| 0| 0| 0|29.94| 0.00| 34| 24| 68|27| 6| 24| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 4 | APR 5 | APR 6 | | | | | |00| 0|30.02| 0.00| 31| 16| 54|26| 5| 12| 0|30.47| 0.00| 27| 12| 54|00| 0| 0| 0|30.13| 0.00| 31| 29| 93|20| 7| 23| |03| 0|30.08| 0.00| 29| 13| 51|28| 9| 20| 0|30.45| 0.00| 22| 13| 67|00| 0| 0| 0|30.10| 0.00| 33| 31| 91|20| 8| 18| |06| 0|30.14| 0.00| 27| 13| 54|28| 5| 24| 0|30.44| 0.00| 18| 11| 71|00| 0| 0| 0|30.08| 0.00| 33| 32| 93|20| 7| 14| |09| 383|30.23| 0.00| 28| 12| 50|31| 9| 28| 53|30.49| 0.00| 21| 11| 63|00| 0| 0| 38|30.09| 0.00| 35| 33| 93|20| 6| 13| |12| 775|30.29| 0.00| 32| 12| 43|29| 8| 27| 514|30.44| 0.00| 32| 10| 39|22| 3| 8| 116|30.10| 0.00| 38| 36| 90|22| 4| 7| |15| 800|30.31| 0.00| 33| 15| 47|32| 7| 18| 363|30.35| 0.00| 39| 13| 35|20| 4| 12| 219|30.12| 0.00| 41| 38| 88|24| 4| 7| |18| 229|30.37| 0.00| 33| 12| 42|31| 10| 24| 77|30.24| 0.00| 40| 13| 33|22| 4| 13| 98|30.13| 0.00| 43| 39| 84|00| 0| 0| |21| 0|30.41| 0.00| 29| 13| 50|33| 5| 15| 0|30.19| 0.00| 33| 27| 77|22| 4| 11| 0|30.16| 0.00| 37| 34| 88|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 7 | APR 8 | APR 9 | | | | | |00| 0|30.18| 0.00| 34| 32| 94|00| 0| 0| 0|30.08| 0.00| 40| 35| 81|00| 0| 0| 0|29.78| 0.00| 32| 31| 95|02| 0| 5| |03| 0|30.17| 0.00| 32| 31| 94|00| 0| 0| 0|30.01| 0.01| 38| 36| 92|00| 0| 0| 0|29.77| 0.00| 30| 29| 95|02| 0| 6| |06| 0|30.19| 0.00| 35| 33| 94|00| 0| 0| 0|29.90| 0.00| 38| 37| 95|00| 0| 0| 0|29.74| 0.00| 29| 27| 94|00| 0| 0| |09| 68|30.22| 0.00| 38| 35| 89|00| 0| 0| 37|29.81| 0.00| 41| 40| 93|22| 2| 7| 101|29.70| 0.00| 29| 28| 94|00| 0| 0| |12| 288|30.24| 0.00| 44| 36| 75|18| 1| 6| 101|29.71| 0.00| 40| 37| 90|15| 2| 9| 166|29.58| 0.00| 34| 32| 90|00| 0| 0| |15| 476|30.18| 0.00| 50| 34| 55|31| 1| 6| 139|29.61| 0.00| 39| 36| 88|18| 9| 22| 80|29.48| 0.00| 36| 35| 95|29| 2| 6| |18| 98|30.13| 0.00| 50| 33| 53|00| 0| 0| 37|29.62| 0.00| 40| 38| 93|22| 7| 14| 52|29.46| 0.00| 37| 36| 94|22| 1| 9| |21| 0|30.11| 0.00| 42| 34| 74|00| 0| 0| 0|29.70| 0.00| 43| 41| 94|00| 0| 0| 0|29.58| 0.00| 30| 29| 94|31| 5| 14| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 10 | APR 11 | APR 12 | | | | | |00| 0|29.67| 0.00| 28| 26| 94|29| 4| 7| 0|30.05| 0.00| 31| 23| 73|29| 2| 10| 0|30.25| 0.00| 30| 25| 80|00| 0| 0| |03| 0|29.68| 0.00| 27| 26| 94|33| 1| 10| 0|30.09| 0.00| 28| 22| 77|00| 0| 0| 0|30.24| 0.00| 31| 26| 81|00| 0| 0| |06| 0|29.71| 0.00| 27| 25| 94|33| 0| 7| 0|30.14| 0.00| 26| 21| 79|31| 1| 11| 0|30.22| 0.00| 33| 28| 82|00| 0| 0| |09| 39|29.81| 0.00| 27| 25| 93|33| 0| 10| 256|30.21| 0.00| 29| 23| 76|02| 1| 8| 129|30.18| 0.00| 40| 28| 62|00| 0| 0| |12| 191|29.86| 0.00| 29| 25| 87|29| 1| 8| 743|30.25| 0.00| 36| 21| 56|31| 4| 12| 270|30.12| 0.00| 48| 30| 48|20| 2| 7| |15| 403|29.89| 0.00| 33| 28| 82|33| 5| 19| 752|30.23| 0.00| 40| 22| 49|29| 0| 4| 620|30.02| 0.00| 57| 43| 61|20| 5| 16| |18| 120|29.94| 0.00| 34| 27| 76|31| 1| 10| 246|30.23| 0.00| 43| 20| 40|02| 0| 1| 179|29.93| 0.00| 56| 44| 64|20| 5| 14| |21| 0|29.99| 0.00| 33| 26| 75|29| 0| 1| 0|30.25| 0.00| 34| 25| 68|00| 0| 0| 0|29.95| 0.00| 52| 49| 90|18| 7| 14| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 13 | APR 14 | APR 15 | | | | | |00| 0|29.91| 0.00| 54| 50| 89|22| 9| 26| 0|29.93| 0.00| 48| 28| 46|29| 1| 8| 0|29.45| 0.00| 41| 40| 95|09| 0| 0| |03| 0|29.88| 0.00| 54| 51| 90|22| 6| 16| 0|29.96| 0.00| 38| 27| 63|03| 0| 0| 0|29.20| 0.00| 42| 41| 95|08| 0| 0| |06| 0|29.87| 0.00| 54| 52| 93|20| 5| 12| 0|29.98| 0.00| 35| 26| 70|30| 0| 0| 0|29.20| 0.00| 49| 48| 96|20| 4| 13| |09| 92|29.94| 0.00| 53| 52| 95|20| 4| 9| 420|29.99| 0.00| 45| 25| 46|30| 4| 7| 65|29.17| 0.00| 50| 49| 94|26| 0| 7| |12| 508|29.92| 0.00| 59| 43| 54|27| 6| 14| 139|29.93| 0.00| 47| 27| 46|04| 0| 5| 104|29.22| 0.00| 46| 43| 92|30| 7| 11| |15| 705|29.86| 0.00| 67| 41| 39|24| 6| 15| 83|29.84| 0.00| 47| 31| 53|04| 0| 1| 120|29.30| 0.17| 39| 38| 94|30| 0| 5| |18| 239|29.89| 0.00| 64| 30| 28|26| 8| 21| 23|29.78| 0.00| 40| 37| 88|36| 0| 0| 47|29.37| 0.00| 38| 35| 91|29| 9| 18| |21| 0|29.90| 0.00| 55| 30| 39|25| 2| 11| 0|29.65| 0.13| 40| 39| 94|03| 0| 0| 0|29.52| 0.00| 34| 32| 90|30| 8| 27| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 16 | APR 17 | APR 18 | | | | | |00| 0|29.62| 0.00| 33| 31| 90|30| 10| 23| 0|30.01| 0.00| 40| 29| 65|34| 0| 0| 0|30.12| 0.00| 36| 25| 63|02| 0| 0| |03| 0|29.67| 0.00| 33| 28| 83|30| 10| 25| 0|30.03| 0.00| 36| 28| 71|30| 0| 0| 0|30.07| 0.00| 41| 24| 51|13| 0| 0| |06| 0|29.77| 0.00| 33| 28| 82|30| 4| 20| 0|30.08| 0.00| 33| 27| 78|29| 0| 0| 0|30.04| 0.00| 44| 26| 50|21| 4| 11| |09| 512|29.83| 0.00| 36| 30| 78|29| 6| 22| 461|30.14| 0.00| 43| 30| 59|01| 0| 6| 53|29.99| 0.05| 42| 36| 79|17| 4| 12| |12| 649|29.86| 0.00| 40| 30| 69|30| 8| 26| 810|30.16| 0.00| 50| 26| 39|32| 6| 11| 287|29.92| 0.00| 50| 35| 56|19| 10| 24| |15| 102|29.89| 0.00| 41| 31| 67|32| 4| 13| 731|30.14| 0.00| 55| 23| 29|32| 0| 9| 434|29.83| 0.00| 56| 36| 47|19| 10| 25| |18| | | | | | | | | | 267|30.11| 0.00| 55| 18| 23|08| 0| 0| 25|29.77| 0.00| 53| 42| 68|19| 5| 20| |21| 0|29.98| 0.00| 41| 29| 64|32| 0| 0| 0|30.12| 0.00| 43| 26| 50|01| 0| 0| 0|29.70| 0.00| 52| 46| 80|19| 6| 21| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.05 | 0.08 | 0.10 | 0.12 | 0.12 | 0.14 | 0.17 | 0.20 | 0.24 | 0.26 | 0.31 | 0.35 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 15 | 15 | 15 | 15 | 15 | 15 | 20 | 20 | 20 | 20 | 20 | 20 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 0417 | 0418 | 0418 | 0421 | 0421 | 0445 | 0157 | 0215 | 0238 | 0200 | 0215 | 0235 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 2019: 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 | | | | | |00| 0|29.65| 0.00| 52| 49| 87|19| 10| 24| 0|29.66| 0.13| 42| 40| 96|28| 0| 5| 0|29.77| 0.00| 52| 51| 97|17| 0| 0| |03| 0|29.59| 0.00| 56| 52| 85|20| 8| 25| 0|29.61| 0.04| 40| 39| 96|28| 0| 7| | | | | | | | | | |06| 0|29.60| 0.00| 57| 52| 83|20| 4| 14| 0|29.67| 0.05| 40| 39| 96|28| 0| 0| | | | | | | | | | |09| 132|29.60| 0.00| 61| 54| 80|20| 5| 22| 51|29.77| 0.00| 40| 39| 96|30| 0| 0| | | | | | | | | | |12| 777|29.59| 0.00| 69| 58| 67|21| 7| 22| 65|29.81| 0.00| 43| 42| 96|01| 0| 0| | | | | | | | | | |15| 67|29.57| 0.00| 64| 55| 73|28| 0| 0| 60|29.79| 0.11| 42| 41| 96|34| 0| 0| | | | | | | | | | |18| 19|29.62| 0.00| 48| 46| 91|26| 0| 7| 84|29.75| 0.00| 49| 48| 96|02| 0| 0| | | | | | | | | | |21| 0|29.72| 0.00| 41| 40| 95|29| 2| 9| 0|29.74| 0.00| 44| 43| 96|02| 0| 0| | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 22 | APR 23 | APR 24 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 25 | APR 26 | APR 27 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 28 | APR 29 | APR 30 | | | | | |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 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|29.947| 37| 30| 79| 2.5| 25 | 1.7| |03| 0|29.938| 35| 29| 79| 2.6| 26 | 1.6| |06| 0|29.946| 35| 29| 80| 2.3| 25 | 1.5| |09| 195|29.968| 38| 30| 76| 2.6| 25 | 1.4| |12| 410|29.954| 43| 30| 64| 4.2| 27 | 2.6| |15| 371|29.924| 45| 31| 62| 4.1| 26 | 2.5| |18| 123|29.918| 44| 30| 64| 3.3| 26 | 2.5| |21| 0|29.948| 39| 31| 75| 2.2| 27 | 1.3| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
April 2019: 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| | | | | | | | | | | | |0.01| | | | | | | | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | |0.01| | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | |0.02|0.02|0.04|0.04| | | | | | | | | | | | | | |06 07| | | | | | |0.01| | | | | | | | | | | | | | | | |0.01|07 08|0.02|0.02|0.04|0.02| | |0.01|0.02| |0.01|0.05|0.01|0.04| |0.01|0.01| |0.02|0.02| | | | | |08 09| | | | | | | | | | | | |0.06|0.10|0.04| | | |0.02| | | | | |09 10| | | | | | | | | | |0.01| | |0.01|0.01| | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | |0.05| | | | |12 13| | | | | | |0.04| | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | |0.03|0.05|0.03|0.02|0.05|0.03| | |14 15| | |0.01| |0.14|0.02|0.02| | | | | | | |0.08|0.03|0.01|0.02| | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | |0.02|0.02| | | | | | | | | | | | | | |0.02|18 19| | | | | | | | | | | | | | | | | | | |0.07|0.01|0.03|0.06|0.05|19 20|0.09|0.16|0.08|0.01|0.03|0.09| | |0.01|0.09| | |0.04|0.03|0.07|0.02| | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.11|0.18|0.13|0.03|0.17|0.11|0.10|0.06|0.07|0.14|0.06|0.01|0.15|0.14|0.21|0.06|0.05|0.09|0.07|0.14|0.06|0.06|0.06|0.08|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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