66.8°F
Current conditions from King Hill
Updated every 5 minutes
 
  Wednesday May 27, 2015

Westford: May 2015
LOCAL CLIMATOLOGICAL DATA Monthly Summary
May 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| 63.3 | 43.6 | 53.4 | 54.2 | 42| 64| 11| 0|.........| 0| 0.00| 0.0| 29.92| 29.86|29.890| 0.4| 0.4|335| 18|NNW| 8|312| 163 | |02| 73.2 | 39.7 | 56.4 | 57.2 | 40| 56| 8| 0|.........| 0| 0.00| 0.0| 29.92| 29.83|29.881| 0.7| 0.5|283| 15| W| 8|320| 276 | |03| 76.6 | 46.9 | 61.8 | 63.0 | 39| 43| 3| 0|.........| 0| 0.00| 0.0| 30.00| 29.89|29.940| 1.4| 1.2|246| 20| NW| 10|301| 266 | |04| 82.5 | 52.4 | 67.4 | 67.4 | 43| 45| 0| 3|.........| 0| 0.01| 0.0| 30.06| 29.90|29.984| 3.4| 3.1|227| 25|WSW| 14|198| 240 | |05| 67.5 | 51.2 | 59.3 | 58.7 | 41| 57| 5| 0|.........| 0| 0.02| 0.0| 30.21| 29.98|30.144| 1.9| 1.8|313| 20| NW| 10|318| 243 | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 75.3 | 42.5 | 58.9 | 60.4 | 35| 43| 6| 0|.........| 0| 0.00| 0.0| 30.26| 30.10|30.183| 1.2| 1.0|273| 15| NW| 9|308| 283 | |07| 81.4 | 48.7 | 65.1 | 66.1 | 38| 39| 0| 0|.........| 0| 0.00| 0.0| 30.14| 29.98|30.068| 1.2| 1.0|252| 14| SW| 9|270| 285 | |08| 85.8*| 48.5 | 67.2 | 69.6 | 44| 44| 0| 3|.........| 0| 0.00| 0.0| 30.07| 29.96|30.013| 1.0| 0.9|224| 14| W| 8|215| 289 | |09| 83.8 | 61.5 | 72.7*| 71.2 | 53| 54| 0| 8|.........| 0| 0.00| 0.0| 30.09| 29.98|30.036| 5.2| 5.2|205| 25|SSW| 13|205| 173 | |10| 77.3 | 53.6 | 65.4 | 67.3 | 61| 82| 0| 1|.........| 0| T | 0.0| 30.06| 29.98|30.009| 4.4| 3.6|214| 23| S| 13|216| 118 | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 59.1 | 50.6 | 54.8 | 53.9 | 53| 97| 10| 0|.23......| 0| 0.59| 0.0| 30.07| 29.83|29.985| 0.6| 0.4|273| 10|SSW| 7|211| 61 | |12| 75.4 | 50.1 | 62.8 | 62.9 | 55| 78| 2| 0|.........| 0| 0.41| 0.0| 29.83| 29.59|29.693| 4.9| 4.5|244| 29|WNW| 16|295| 211 | |13| 59.1 | 42.6 | 50.8 | 49.2 | 38| 66| 14| 0|.........| 0| 0.02| 0.0| 30.21| 29.74|29.989| 2.0| 1.7|307| 23| NW| 13|316| 178 | |14| 63.8 | 38.5 | 51.2 | 50.5 | 33| 54| 13| 0|.........| 0| 0.00| 0.0| 30.37| 30.21|30.289| 0.7| 0.7|312| 15|WNW| 8|273| 298 | |15| 70.4 | 36.2 | 53.3 | 55.2 | 34| 51| 12| 0|.........| 0| 0.00| 0.0| 30.27| 30.08|30.185| 1.1| 1.1|219| 18| W| 8|258| 235 | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 72.6 | 51.5 | 62.0 | 63.2 | 54| 72| 2| 0|.........| 0| 0.01| 0.0| 30.08| 29.94|30.015| 2.0| 2.0|212| 20|SSE| 10|238| 163 | |17| 76.7 | 51.7 | 64.2 | 64.6 | 55| 73| 0| 0|.........| 0| 0.00| 0.0| 30.12| 30.02|30.073| 1.2| 1.2|302| 14| W| 9|282| 266 | |18| 82.0 | 48.4 | 65.2 | 66.2 | 57| 74| 0| 0|.........| 0| 0.00| 0.0| 30.10| 29.86|29.991| 3.0| 3.0|208| 26| S| 12|218| 267 | |19| 77.7 | 56.5 | 67.1 | 65.9 | 57| 75| 0| 3|.........| 0| 0.01| 0.0| 29.87| 29.61|29.731| 6.0| 5.4|223| 29| W| 17|285| 246 | |20| 56.8 | 43.2 | 50.0 | 49.3 | 36| 62| 15| 0|.........| 0| T | 0.0| 29.87| 29.70|29.789| 3.2| 3.1|292| 26| NW| 14|293| 188 | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 68.2 | 38.1 | 53.1 | 53.0 | 37| 56| 12| 0|.........| 0| 0.00| 0.0| 29.91| 29.73|29.821| 1.9| 1.8|222| 19|SSW| 8|218| 284 | |22| 57.2 | 36.2 | 46.7 | 49.4 | 35| 58| 18| 0|.........| 0| 0.00| 0.0| 30.12| 29.72|29.866| 1.9| 1.8|301| 22|WNW| 12|306| 221 | |23| 59.9 | 32.4*| 46.2*| 45.9 | 28| 50| 19| 0|.........| 0| 0.00| 0.0| 30.30| 30.12|30.214| 1.5| 1.3|285| 20|WNW| 8|283| 296 | |24| 77.8 | 45.9 | 61.9 | 62.5 | 39| 43| 3| 0|.........| 0| 0.00| 0.0| 30.16| 30.03|30.096| 3.1| 2.9|236| 21| W| 8|270| 214 | |25| 67.2 | 55.5 | 61.3 | 62.4 | 51| 69| 3| 0|.........| 0| 0.14| 0.0| 30.14| 29.95|30.059| 1.0| 1.0|214| 14| SW| 9|223| 98 | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 83.6 | 61.1 | 72.3 | 71.1 | 62| 75| 0| 8|.........| 0| 0.02| 0.0| 30.01| 29.92|29.969| 1.8| 1.7|229| 20|SSW| 11|267| 168 | |27| 67.5 | 67.4 | 67.4 | 67.5 | 62| 82| 0| 3|.........| 0| 0.00| 0.0| 29.99| 29.99|29.986| 0.0| 0.0| 0| 0|SSW| 0|218| 0 | |28| | | | | | | | | | | | | | | | | | | | | | | | |29| | | | | | | | | | | | | | | | | | | | | | | | |30| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |31| | | | | | | | | | | | | | | | | | | | | | | | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1941.7|1294.5|------|------|---|----| 156| 29| Days | 1.23| 0.0| 30.37| 29.59|29.996| 2.1| 1.6|241| 29|WNW| 17|285| ---- | +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 71.9| 47.9| 59.9 | 60.3 | 45|61.5|----|----|≥.01 Inch 9| 9.31| 87.3| 14 | 12 |------|----|----|---| 12+ | 19 | 212| +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+ | | 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 |8130| 29|Thunder 1|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 1| 0.97| 11-12| 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 1 | 0 |----|----| Clear 6 Partly Cloudy 9 Cloudy 3 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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
May 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 1 | MAY 2 | MAY 3 | | | | | |01| 0|29.88| 0.00| 49| 41| 72|06| 0| 0| 0|29.90| 0.00| 45| 39| 80|04| 0| 0| 0|29.90| 0.00| 53| 36| 53|25| 0| 1| |04| 0|29.87| 0.00| 47| 41| 79|04| 0| 0| 0|29.90| 0.00| 42| 39| 88|04| 0| 0| 0|29.90| 0.00| 49| 37| 64|24| 0| 0| |07| 23|29.91| 0.00| 44| 40| 85|21| 0| 0| 33|29.92| 0.00| 45| 40| 84|19| 0| 1| 44|29.93| 0.00| 57| 38| 50|20| 2| 8| |10| 717|29.92| 0.00| 59| 43| 56|33| 2| 8| 642|29.91| 0.00| 63| 43| 49|20| 1| 6| 640|29.96| 0.00| 68| 42| 39|21| 6| 12| |13| 357|29.89| 0.00| 62| 41| 47|01| 3| 9| 958|29.87| 0.00| 69| 42| 37|00| 0| 12| 851|29.95| 0.00| 74| 39| 29|32| 1| 10| |16| 213|29.88| 0.00| 61| 43| 50|00| 1| 9| 613|29.83| 0.00| 73| 42| 33|32| 2| 10| 642|29.94| 0.00| 74| 39| 29|28| 4| 10| |19| 130|29.88| 0.00| 63| 43| 48|09| 0| 6| 58|29.85| 0.00| 66| 37| 34|00| 0| 2| 40|29.95| 0.00| 71| 40| 33|20| 0| 0| |22| 0|29.90| 0.00| 51| 41| 71|04| 0| 0| 0|29.88| 0.00| 52| 35| 53|01| 0| 0| 0|29.99| 0.00| 61| 40| 46|20| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 4 | MAY 5 | MAY 6 | | | | | |01| 0|30.01| 0.00| 56| 41| 56|20| 0| 3| 0|30.01| 0.00| 59| 56| 91|28| 5| 15| 0|30.21| 0.00| 52| 36| 53|27| 0| 0| |04| 0|30.03| 0.00| 54| 41| 61|20| 0| 4| 0|30.07| 0.00| 55| 53| 90|30| 5| 10| 0|30.22| 0.00| 43| 36| 74|05| 0| 0| |07| 51|30.05| 0.00| 58| 41| 53|19| 1| 8| 69|30.17| 0.00| 51| 48| 87|01| 4| 9| 54|30.25| 0.00| 49| 38| 66|14| 0| 0| |10| 619|30.03| 0.00| 73| 43| 35|19| 7| 14| 359|30.20| 0.00| 57| 45| 63|32| 1| 8| 635|30.25| 0.00| 64| 35| 34|22| 2| 9| |13| 830|29.97| 0.00| 80| 44| 28|24| 4| 19| 846|30.19| 0.00| 65| 39| 38|33| 2| 9| 819|30.20| 0.00| 70| 32| 25|25| 4| 10| |16| 584|29.90| 0.00| 81| 40| 23|23| 5| 16| 526|30.15| 0.00| 67| 32| 27|26| 0| 7| 594|30.13| 0.00| 73| 34| 24|27| 7| 15| |19| 7|29.91| 0.00| 74| 41| 30|27| 7| 13| 72|30.15| 0.00| 62| 33| 34|34| 0| 15| 88|30.10| 0.00| 71| 35| 27|32| 0| 2| |22| 0|29.97| 0.00| 65| 51| 62|27| 1| 8| 0|30.18| 0.00| 55| 33| 44|24| 0| 0| 0|30.12| 0.00| 59| 34| 39|25| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 7 | MAY 8 | MAY 9 | | | | | |01| 0|30.11| 0.00| 55| 37| 50|21| 0| 0| 0|30.00| 0.00| 60| 38| 44|32| 0| 0| 0|30.03| 0.00| 64| 46| 51|23| 0| 8| |04| 0|30.11| 0.00| 50| 36| 58|21| 0| 0| 0|30.00| 0.00| 56| 40| 55|22| 0| 5| 0|30.05| 0.00| 63| 49| 62|19| 0| 8| |07| 67|30.14| 0.00| 55| 40| 56|19| 3| 8| 39|30.05| 0.00| 54| 42| 64|21| 0| 0| 74|30.08| 0.00| 62| 49| 63|20| 5| 13| |10| 624|30.13| 0.00| 70| 38| 31|26| 3| 12| 650|30.06| 0.00| 74| 48| 41|20| 1| 10| 336|30.09| 0.00| 72| 54| 54|18| 6| 15| |13| 837|30.08| 0.00| 78| 38| 24|00| 3| 11| 858|30.02| 0.00| 83| 39| 21|32| 0| 1| 287|30.06| 0.00| 74| 57| 54|20| 7| 15| |16| 612|30.01| 0.00| 81| 40| 23|33| 0| 6| 610|29.99| 0.00| 86| 40| 20|21| 0| 10| 394|30.00| 0.00| 82| 58| 43|18| 4| 19| |19| 100|29.98| 0.00| 78| 44| 30|32| 0| 0| 62|29.96| 0.00| 83| 50| 32|22| 0| 1| 58|29.99| 0.00| 78| 55| 44|20| 7| 16| |22| 0|30.00| 0.00| 63| 41| 44|32| 0| 0| 0|30.01| 0.00| 67| 48| 49|15| 0| 0| 0|30.02| 0.00| 72| 58| 60|21| 7| 23| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 10 | MAY 11 | MAY 12 | | | | | |01| 0|30.00| 0.00| 68| 60| 76|20| 9| 22| 0|30.05| 0.00| 54| 53| 96|01| 0| 0| 0|29.80| 0.00| 56| 56| 98|19| 0| 0| |04| 0|30.00| 0.00| 65| 60| 84|20| 7| 19| 0|30.04| 0.00| 52| 51| 97|34| 0| 5| 0|29.75| 0.00| 62| 61| 98|23| 7| 13| |07| 77|30.01| 0.00| 65| 60| 85|22| 4| 14| 12|30.06| 0.00| 52| 51| 98|31| 0| 0| 26|29.70| 0.00| 62| 62| 97|21| 6| 14| |10| 315|30.00| 0.00| 69| 62| 78|20| 8| 16| 139|30.04| 0.00| 51| 51| 98|29| 0| 0| 195|29.68| 0.00| 65| 64| 98|21| 6| 18| |13| 81|30.00| 0.00| 69| 63| 83|20| 1| 11| 132|30.00| 0.00| 55| 53| 94|35| 0| 5| 357|29.62| 0.00| 72| 62| 71|25| 5| 13| |16| 278|29.99| 0.00| 73| 64| 75|35| 1| 8| 25|29.93| 0.23| 55| 54| 97|30| 0| 0| 404|29.60| 0.00| 71| 51| 48|26| 9| 21| |19| 32|30.01| 0.00| 68| 64| 85|02| 0| 6| 30|29.92| 0.00| 57| 57| 98|29| 4| 7| 54|29.68| 0.00| 61| 43| 53|26| 4| 22| |22| 0|30.04| 0.00| 60| 58| 94|35| 0| 0| 0|29.86| 0.00| 54| 53| 98|29| 0| 0| 0|29.74| 0.00| 53| 44| 74|27| 2| 9| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 13 | MAY 14 | MAY 15 | | | | | |01| 0|29.74| 0.00| 52| 44| 75|25| 3| 11| 0|30.23| 0.00| 46| 33| 62|33| 0| 5| 0|30.24| 0.00| 39| 34| 81|18| 0| 0| |04| 0|29.75| 0.00| 49| 45| 88|30| 5| 9| 0|30.29| 0.00| 42| 33| 71|01| 0| 0| 0|30.24| 0.00| 37| 32| 85|18| 0| 0| |07| 39|29.90| 0.00| 43| 38| 84|34| 0| 11| 42|30.34| 0.00| 42| 33| 71|34| 0| 1| 113|30.26| 0.00| 44| 40| 85|13| 0| 0| |10| 79|30.01| 0.00| 44| 36| 73|33| 0| 12| 666|30.36| 0.00| 52| 32| 46|28| 6| 11| 455|30.25| 0.00| 60| 38| 45|19| 2| 9| |13| 311|30.06| 0.00| 51| 39| 63|34| 0| 14| 872|30.33| 0.00| 58| 32| 37|30| 2| 12| 575|30.19| 0.00| 66| 34| 31|24| 3| 9| |16| 657|30.09| 0.00| 56| 34| 43|33| 3| 18| 642|30.28| 0.00| 63| 33| 33|01| 4| 9| 694|30.14| 0.00| 70| 36| 29|20| 1| 8| |19| 84|30.11| 0.00| 56| 33| 42|29| 0| 6| 102|30.24| 0.00| 61| 36| 39|00| 0| 0| 53|30.10| 0.00| 64| 29| 27|20| 2| 8| |22| 0|30.17| 0.00| 46| 34| 63|29| 0| 1| 0|30.25| 0.00| 43| 35| 73|18| 0| 0| 0|30.09| 0.00| 60| 31| 34|16| 0| 11| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 16 | MAY 17 | MAY 18 | | | | | |01| 0|30.07| 0.00| 60| 39| 45|17| 0| 1| 0|30.03| 0.00| 62| 59| 88|30| 0| 0| 0|30.09| 0.00| 51| 49| 92|10| 0| 0| |04| 0|30.02| 0.00| 53| 49| 86|17| 0| 0| 0|30.03| 0.00| 60| 56| 89|29| 0| 0| 0|30.06| 0.00| 49| 48| 95|10| 0| 0| |07| 33|30.05| 0.00| 57| 49| 76|21| 2| 8| 49|30.09| 0.00| 60| 58| 91|28| 3| 5| 39|30.08| 0.00| 52| 52| 97|31| 0| 0| |10| 508|30.03| 0.00| 63| 54| 74|20| 6| 15| 780|30.12| 0.00| 65| 59| 81|27| 3| 10| 640|30.05| 0.00| 70| 57| 64|20| 3| 9| |13| 471|30.01| 0.00| 68| 58| 69|20| 5| 14| 932|30.10| 0.00| 71| 53| 52|29| 6| 10| 858|30.00| 0.00| 77| 60| 57|19| 6| 16| |16| 216|29.96| 0.00| 71| 59| 67|21| 0| 8| 645|30.07| 0.00| 75| 51| 44|31| 1| 6| 492|29.93| 0.00| 81| 63| 54|21| 6| 23| |19| 46|29.95| 0.00| 70| 60| 71|20| 2| 11| 100|30.06| 0.00| 72| 52| 49|01| 1| 5| 25|29.89| 0.00| 75| 61| 62|18| 1| 8| |22| 0|30.00| 0.00| 64| 60| 88|25| 0| 1| 0|30.09| 0.00| 56| 51| 82|10| 0| 0| 0|29.89| 0.00| 70| 62| 76|20| 9| 18| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.16 | 0.22 | 0.24 | 0.26 | 0.28 | 0.31 | 0.37 | 0.42 | 0.49 | 0.52 | 0.53 | 0.53 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1515 | 1516 | 1516 | 1522 | 1522 | 1533 | 1555 | 1614 | 1638 | 1638 | 1638 | 1638 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 19 | MAY 20 | MAY 21 | | | | | |01| 0|29.86| 0.00| 66| 58| 77|19| 5| 21| 0|29.72| 0.00| 55| 45| 67|25| 3| 10| 0|29.88| 0.00| 40| 33| 77|21| 0| 3| |04| 0|29.82| 0.00| 60| 57| 88|22| 8| 22| 0|29.72| 0.00| 51| 42| 71|25| 1| 9| 0|29.88| 0.00| 39| 33| 78|20| 1| 7| |07| 62|29.78| 0.00| 59| 57| 93|20| 8| 19| 35|29.75| 0.00| 45| 39| 80|27| 0| 14| 62|29.90| 0.00| 43| 35| 72|22| 6| 9| |10| 621|29.75| 0.00| 65| 61| 86|21| 5| 19| 954|29.78| 0.00| 46| 38| 74|31| 6| 21| 670|29.87| 0.00| 55| 38| 53|21| 4| 12| |13| 840|29.70| 0.00| 73| 65| 75|20| 5| 14| 330|29.82| 0.00| 48| 36| 61|28| 4| 22| 914|29.81| 0.00| 64| 33| 32|21| 5| 12| |16| 601|29.63| 0.00| 77| 67| 71|21| 5| 11| 710|29.81| 0.00| 53| 36| 53|32| 1| 13| 715|29.76| 0.00| 67| 41| 38|23| 3| 11| |19| 121|29.64| 0.00| 71| 47| 42|25| 5| 16| 113|29.83| 0.00| 54| 33| 44|30| 3| 12| 54|29.73| 0.00| 60| 41| 50|20| 0| 0| |22| 0|29.69| 0.00| 59| 46| 62|28| 7| 20| 0|29.86| 0.00| 46| 30| 52|28| 0| 4| 0|29.77| 0.00| 55| 36| 48|27| 0| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 22 | MAY 23 | MAY 24 | | | | | |01| 0|29.75| 0.00| 50| 33| 52|24| 0| 0| 0|30.14| 0.00| 36| 23| 59|32| 0| 6| 0|30.14| 0.00| 48| 30| 50|22| 2| 8| |04| 0|29.73| 0.00| 49| 36| 60|21| 0| 4| 0|30.17| 0.00| 34| 24| 67|29| 0| 9| 0|30.11| 0.00| 50| 32| 50|20| 4| 10| |07| 97|29.76| 0.00| 52| 39| 63|29| 6| 11| 37|30.25| 0.00| 36| 27| 70|31| 4| 8| 86|30.14| 0.00| 53| 35| 51|21| 4| 10| |10| 513|29.81| 0.00| 51| 45| 79|31| 6| 18| 803|30.29| 0.00| 45| 28| 52|28| 2| 15| 309|30.13| 0.00| 59| 44| 59|20| 3| 9| |13| 912|29.86| 0.00| 53| 41| 62|01| 1| 13| 874|30.28| 0.00| 52| 29| 41|28| 0| 9| 884|30.09| 0.00| 72| 46| 39|24| 2| 21| |16| 374|29.91| 0.00| 54| 34| 47|30| 3| 14| 670|30.22| 0.00| 59| 28| 30|28| 1| 8| 696|30.05| 0.00| 76| 48| 37|27| 2| 10| |19| 28|29.97| 0.00| 47| 29| 50|32| 0| 13| 63|30.19| 0.00| 55| 29| 37|26| 3| 15| 120|30.04| 0.00| 73| 41| 32|26| 4| 12| |22| 0|30.08| 0.00| 40| 26| 56|07| 0| 6| 0|30.17| 0.00| 49| 32| 52|19| 0| 4| 0|30.08| 0.00| 66| 39| 37|22| 2| 8| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 25 | MAY 26 | MAY 27 | | | | | |01| 0|30.08| 0.00| 61| 40| 45|17| 0| 5| 0|29.92| 0.00| 62| 61| 97|20| 1| 8| | | | | | | | | | |04| 0|30.08| 0.00| 58| 42| 55|20| 0| 7| 0|29.94| 0.32| 64| 61| 90|21| 5| 10| | | | | | | | | | |07| 33|30.11| 0.00| 61| 44| 54|22| 3| 8| 12|29.98| 0.00| 66| 62| 87|21| 4| 14| | | | | | | | | | |10| 281|30.13| 0.00| 65| 51| 61|23| 3| 13| 276|30.00| 0.00| 73| 65| 76|24| 5| 13| | | | | | | | | | |13| 338|30.10| 0.00| 64| 56| 76|23| 0| 11| 802|29.99| 0.00| 77| 65| 68|20| 5| 13| | | | | | | | | | |16| 128|30.03| 0.00| 67| 57| 72|19| 0| 1| 225|29.97| 0.00| 80| 62| 53|23| 2| 11| | | | | | | | | | |19| 14|29.99| 0.00| 66| 57| 75|19| 0| 0| 88|29.96| 0.00| 80| 61| 52|25| 2| 8| | | | | | | | | | |22| 0|29.97| 0.00| 62| 60| 95|14| 0| 8| 0|29.97| 0.00| 67| 59| 75|20| 0| 0| | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 28 | MAY 29 | MAY 30 | | | | | |01| | | | | | | | | | | | | | | | | | | | | | | | | | | | |04| | | | | | | | | | | | | | | | | | | | | | | | | | | | |07| | | | | | | | | | | | | | | | | | | | | | | | | | | | |10| | | | | | | | | | | | | | | | | | | | | | | | | | | | |13| | | | | | | | | | | | | | | | | | | | | | | | | | | | |16| | | | | | | | | | | | | | | | | | | | | | | | | | | | |19| | | | | | | | | | | | | | | | | | | | | | | | | | | | |22| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 31 | | | | | | | |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|29.992| 54| 43| 69| 1.1| 23 | 0.9| |04| 0|29.992| 51| 44| 76| 1.7| 23 | 1.4| |07| 50|30.025| 53| 44| 75| 2.4| 23 | 1.7| |10| 516|30.033| 61| 47| 62| 3.6| 23 | 2.7| |13| 659|30.009| 67| 46| 51| 2.9| 24 | 1.9| |16| 498|29.969| 70| 46| 45| 2.4| 26 | 1.6| |19| 67|29.964| 67| 44| 47| 1.7| 26 | 1.4| |22| 0|29.992| 57| 44| 63| 1.1| 24 | 0.9| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
May 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| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | |0.01|04 05|0.02| | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | |0.01| | | | | | |0.05|0.36|0.12| | | |0.03|0.01|0.01| |11 12| | | | |0.08|0.06|0.05| |0.08|0.12| | | | | | | | | | | | |0.02| |12 13| | | | |0.01|0.01| | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | |0.01| | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | |0.01| | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | |0.04|0.07|0.02|0.01|25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | |0.02| | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 31| | | | | | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.02|0.00|0.00|0.03|0.10|0.07|0.05|0.01|0.08|0.12|0.00|0.00|0.00|0.00|0.05|0.36|0.12|0.00|0.00|0.00|0.07|0.08|0.05|0.02|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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