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Westford: April 2018
LOCAL CLIMATOLOGICAL DATA
Monthly Summary
April 2018
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| 44.6 | 27.1 | 35.8 | 36.3 | 23| 59| 29| 0|.........| T| 0.04| T| 30.05| 29.67|29.864| 4.7| 3.7|246| 29|SSW| 15|300| 108 |
|02| 42.8 | 22.2 | 32.5 | 31.5 | 18| 60| 32| 0|.........| T| 0.00| 0.0| 30.09| 30.01|30.054| 1.2| 1.2|273| 20|WNW| 10|279| 202 |
|03| 47.3 | 27.0 | 37.2 | 36.2 | 26| 67| 28| 0|.........| T| 0.05| T| 30.11| 29.72|29.998| 1.4| 1.4|214| 16| S| 9|217| 101 |
|04| 46.1 | 22.7 | 34.4 | 37.3 | 33| 84| 30| 0|.........| T| 0.58| T| 29.73| 29.23|29.413| 6.9| 5.9|246| 38|WNW| 24|301| 52 |
|05| 29.6 | 15.1*| 22.4*| 21.7 | 7| 53| 42| 0|.........| 0| 0.00| 0.0| 30.03| 29.59|29.885| 7.3| 7.2|294| 31|WNW| 19|288| 242 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|06| 35.3 | 16.7 | 26.0 | 27.0 | 20| 76| 39| 0|.........| 1| 0.03| 1.0| 30.03| 29.58|29.813| 2.5| 2.5|210| 23|SSW| 13|211| 106 |
|07| 38.0 | 25.0 | 31.5 | 31.0 | 19| 63| 33| 0|.........| 0| 0.03| 0.0| 29.89| 29.57|29.736| 4.0| 3.6|272| 28|WSW| 14|301| 177 |
|08| 33.2 | 18.2 | 25.7 | 26.6 | 17| 68| 39| 0|.........| 1| 0.00| 0.8| 29.97| 29.82|29.872| 1.0| 0.9|301| 19| NW| 9|324| 124 |
|09| 35.4 | 15.7 | 25.6 | 24.9 | 13| 60| 39| 0|.........| 0| 0.01| 0.0| 30.18| 29.97|30.112| 1.2| 1.2|320| 19|WNW| 9|299| 241 |
|10| 40.6 | 17.5 | 29.0 | 28.7 | 20| 71| 35| 0|.........| T| 0.00| 0.3| 30.17| 30.08|30.137| 0.9| 0.8|268| 15| NW| 10|292| 168 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|11| 45.4 | 20.8 | 33.1 | 34.2 | 25| 71| 32| 0|.........| 0| 0.01| 0.0| 30.14| 29.95|30.052| 2.8| 2.7|218| 21|SSW| 12|218| 177 |
|12| 48.6 | 31.8 | 40.2 | 40.0 | 33| 77| 24| 0|.........| 0| 0.33| 0.0| 30.03| 29.56|29.865| 3.5| 3.4|203| 30| S| 15|205| 121 |
|13| 50.7 | 37.6 | 44.2 | 42.8 | 39| 89| 20| 0|.2.......| 0| 0.45| 0.0| 29.96| 29.56|29.844| 1.3| 0.9|261| 20|SSW| 11|211| 111 |
|14| 40.4 | 19.3 | 29.9 | 28.0 | 23| 82| 35| 0|...4.....| 2| 0.10| 1.9| 30.44| 29.91|30.192| 1.1| 1.1| 21| 19|NNE| 8| 27| 50 |
|15| 31.8 | 20.3 | 26.0 | 26.5 | 23| 87| 39| 0|.....6...| 2| 0.04| 0.7| 30.48| 30.27|30.410| 0.8| 0.7| 44| 16| NE| 6| 58| 63 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|16| 43.4 | 28.9 | 36.2 | 35.4 | 32| 89| 29| 0|.....6...| T| 1.01| 0.0| 30.28| 29.45|29.845| 1.8| 1.8|185| 30| S| 13|210| 74 |
|17| 39.3 | 31.0 | 35.2 | 34.8 | 31| 88| 30| 0|.........| 0| 0.12| T| 29.55| 29.44|29.478| 3.0| 2.9|281| 24| W| 14|302| 97 |
|18| 43.2 | 29.7 | 36.5 | 35.9 | 30| 80| 28| 0|.........| 0| 0.03| T| 29.67| 29.53|29.586| 3.5| 3.4|257| 23| W| 10|263| 112 |
|19| 40.4 | 29.9 | 35.2 | 34.4 | 30| 84| 30| 0|.........| 1| 0.03| 1.1| 29.87| 29.62|29.716| 2.4| 2.2|306| 21| N| 12|323| 125 |
|20| 38.7 | 28.4 | 33.5 | 32.7 | 28| 85| 31| 0|.........| T| 0.17| 1.6| 30.25| 29.87|30.087| 3.2| 3.2|305| 23|WNW| 13|308| 67 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|21| 52.2 | 31.5 | 41.8 | 41.3 | 26| 56| 23| 0|.........| 0| 0.02| 0.0| 30.31| 30.23|30.267| 1.0| 1.0|316| 21|WNW| 10|288| 277 |
|22| 55.7 | 30.5 | 43.1 | 42.4 | 23| 48| 21| 0|.........| 0| 0.00| 0.0| 30.38| 30.28|30.341| 0.6| 0.6|323| 20|WNW| 7|309| 281 |
|23| 65.4 | 29.6 | 47.5 | 48.3 | 20| 38| 17| 0|.........| 0| 0.00| 0.0| 30.46| 30.26|30.363| 0.7| 0.7|216| 12|WSW| 7|213| 284 |
|24| 70.6*| 45.3 | 57.9*| 58.1 | 27| 31| 7| 0|.........| 0| 0.00| 0.0| 30.26| 30.05|30.165| 4.2| 4.2|208| 22|SSW| 12|200| 258 |
|25| | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | |
|26| | | | | | | | | | | | | | | | | | | | | | | |
|27| | | | | | | | | | | | | | | | | | | | | | | |
|28| | | | | | | | | | | | | | | | | | | | | | | |
|29| | | | | | | | | | | | | | | | | | | | | | | |
|30| | | | | | | | | | | | | | | | | | | | | | | |
+--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- |
+------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+
|1058.7| 621.8|------|------|---|----| 712| 0| Days | 3.05| 7.4| 30.48| 29.23|29.966| 2.8| 1.8|251| 38|WNW| 24|301| ---- |
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg |
+------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+
| 44.1| 25.9| 35.0 | 35.7 | 25|68.1|----|----|≥.01 Inch 17|13.07|100.7| 15 | 4 |------|----|----|---| 4 | 4 | 145|
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+
| | Season |Snow, Ice | | |
| Number of Days | to Date |≥1.0 Inch 4| Greatest in 24 Hours and Dates | Greatest Depth on Ground |
+------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice |
| Max Temperature | Min Temperature |7267| 0|Thunder 0|Precipitation | Snow, Ice Plts | and Date |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+
| ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 1| 1.12| 16-17| 1.9 | 14 | 2 | 14+ |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+
| 0 | 2 | 22 | 0 |----|----| Clear 5 Partly Cloudy 6 Cloudy 13 |
+--------+---------+--------+--------+----+----+------------------------------------------+
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
April 2018: Westford
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+
| | | | | | | | | | | | | | | | | | | | | | |
| | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind |
| | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+
| | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | |
| | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | |
| | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | |
| | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | |
| | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | |
| H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G |
| o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u |
| u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s |
| r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| APR 1 | APR 2 | APR 3 |
| | | |
|00| 0|29.75| 0.00| 45| 23| 42|21| 7| 24| 0|30.04| 0.00| 27| 18| 68|20| 0| 8| 0|30.07| 0.00| 30| 18| 60|29| 0| 0|
|03| 0|29.69| 0.00| 43| 26| 52|20| 10| 22| 0|30.04| 0.00| 26| 19| 75|22| 0| 0| 0|30.08| 0.00| 28| 20| 72|27| 0| 0|
|06| 0|29.68| 0.00| 40| 30| 66|21| 6| 14| 0|30.04| 0.00| 22| 18| 84|24| 0| 0| 0|30.10| 0.00| 32| 20| 62|18| 1| 5|
|09| 450|29.80| 0.00| 38| 29| 69|29| 11| 27| 355|30.08| 0.00| 31| 20| 64|25| 0| 7| 171|30.09| 0.00| 37| 23| 57|19| 3| 8|
|12| 288|29.89| 0.00| 35| 26| 72|28| 3| 13| 325|30.07| 0.00| 35| 18| 50|29| 4| 9| 501|30.04| 0.00| 45| 30| 54|23| 4| 12|
|15| 195|29.93| 0.00| 34| 19| 54|28| 5| 16| 636|30.04| 0.00| 40| 17| 39|25| 5| 12| 146|29.95| 0.00| 45| 28| 51|25| 2| 9|
|18| 183|29.97| 0.00| 34| 17| 48|29| 0| 8| 169|30.02| 0.00| 41| 14| 33|30| 3| 11| 21|29.91| 0.00| 39| 32| 74|21| 4| 10|
|21| 0|30.04| 0.00| 31| 18| 57|29| 2| 12| 0|30.07| 0.00| 31| 19| 62|32| 0| 0| 0|29.87| 0.00| 33| 31| 93|18| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| APR 4 | APR 5 | APR 6 |
| | | |
|00| 0|29.73| 0.00| 34| 32| 94|19| 1| 7| 0|29.60| 0.00| 23| 16| 75|26| 13| 25| 0|30.03| 0.00| 19| 10| 68|29| 0| 0|
|03| 0|29.60| 0.04| 35| 33| 94|20| 0| 6| 0|29.76| 0.00| 18| 9| 66|28| 12| 28| 0|30.00| 0.00| 20| 12| 70|22| 0| 0|
|06| 0|29.45| 0.00| 37| 35| 95|18| 6| 15| 0|29.83| 0.00| 17| 9| 70|28| 9| 16| 0|29.99| 0.00| 19| 11| 73|19| 1| 5|
|09| 54|29.31| 0.00| 41| 39| 95|19| 8| 24| 399|29.87| 0.00| 19| 5| 54|26| 5| 22| 394|29.94| 0.00| 28| 18| 67|21| 4| 19|
|12| 63|29.23| 0.07| 44| 43| 95|21| 11| 24| 745|29.90| 0.00| 24| 5| 42|26| 7| 16| 353|29.86| 0.00| 33| 19| 56|20| 6| 18|
|15| 100|29.32| 0.00| 41| 35| 81|27| 5| 12| 668|29.93| 0.00| 29| 5| 36|28| 9| 20| 123|29.70| 0.00| 31| 25| 78|11| 0| 5|
|18| 179|29.32| 0.00| 44| 28| 53|26| 8| 27| 185|29.96| 0.00| 28| 5| 37|28| 14| 27| 28|29.59| 0.04| 31| 28| 91|19| 0| 8|
|21| 0|29.43| 0.00| 30| 20| 64|25| 14| 37| 0|30.01| 0.00| 21| 7| 53|29| 0| 1| 0|29.60| 0.00| 31| 29| 93|22| 6| 13|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| APR 7 | APR 8 | APR 9 |
| | | |
|00| 0|29.58| 0.00| 29| 27| 93|20| 0| 0| 0|29.89| 0.00| 25| 18| 73|26| 0| 0| 0|29.97| 0.00| 23| 12| 61|32| 3| 14|
|03| 0|29.59| 0.00| 31| 27| 86|21| 5| 8| 0|29.87| 0.00| 26| 16| 68|32| 0| 0| 0|30.01| 0.00| 20| 11| 67|33| 3| 12|
|06| 0|29.65| 0.00| 28| 19| 69|26| 8| 21| 0|29.87| 0.00| 19| 13| 78|32| 0| 0| 0|30.08| 0.00| 17| 10| 72|31| 0| 7|
|09| 229|29.71| 0.00| 29| 19| 65|27| 8| 16| 190|29.86| 0.00| 28| 17| 62|32| 0| 0| 199|30.13| 0.00| 21| 9| 60|31| 2| 12|
|12| 130|29.75| 0.00| 33| 19| 55|28| 9| 22| 285|29.85| 0.00| 31| 13| 47|34| 0| 4| 826|30.16| 0.00| 26| 14| 61|31| 2| 18|
|15| 327|29.77| 0.00| 35| 17| 47|30| 8| 20| 227|29.83| 0.00| 31| 15| 51|31| 5| 13| 671|30.14| 0.00| 34| 15| 45|02| 1| 11|
|18| 163|29.81| 0.00| 34| 16| 47|29| 3| 13| 23|29.85| 0.00| 28| 22| 80|29| 0| 6| 86|30.13| 0.00| 31| 14| 48|04| 0| 2|
|21| 0|29.88| 0.00| 29| 16| 56|26| 1| 10| 0|29.91| 0.00| 25| 18| 74|31| 3| 10| 0|30.16| 0.00| 27| 15| 60|04| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| APR 10 | APR 11 | APR 12 |
| | | |
|00| 0|30.17| 0.00| 21| 15| 79|04| 0| 0| 0|30.13| 0.00| 25| 23| 93|19| 0| 0| 0|29.99| 0.00| 35| 30| 83|26| 0| 3|
|03| 0|30.14| 0.00| 19| 14| 80|04| 0| 0| 0|30.13| 0.00| 25| 23| 93|19| 3| 6| 0|29.99| 0.00| 34| 29| 83|22| 0| 0|
|06| 0|30.16| 0.00| 18| 14| 85|04| 0| 0| 0|30.12| 0.00| 23| 22| 94|19| 0| 0| 0|30.00| 0.00| 33| 29| 84|22| 0| 0|
|09| 348|30.17| 0.00| 29| 20| 67|04| 0| 0| 388|30.11| 0.00| 33| 26| 77|21| 6| 12| 367|30.02| 0.00| 39| 33| 79|21| 0| 9|
|12| 445|30.15| 0.00| 36| 20| 50|26| 2| 9| 800|30.07| 0.00| 42| 23| 46|20| 5| 19| 584|29.94| 0.00| 48| 30| 50|24| 6| 16|
|15| 524|30.10| 0.00| 38| 20| 48|28| 0| 10| 642|29.99| 0.00| 45| 25| 44|21| 7| 14| 81|29.83| 0.00| 46| 29| 52|17| 2| 11|
|18| 216|30.10| 0.00| 37| 26| 65|31| 0| 6| 79|29.96| 0.00| 40| 27| 61|24| 4| 10| 11|29.73| 0.04| 40| 37| 89|16| 1| 3|
|21| 0|30.13| 0.00| 29| 26| 91|19| 0| 0| 0|29.98| 0.00| 38| 27| 63|22| 3| 8| 0|29.64| 0.00| 41| 39| 93|19| 5| 12|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| APR 13 | APR 14 | APR 15 |
| | | |
|00| 0|29.56| 0.00| 45| 43| 94|20| 9| 19| 0|29.94| 0.08| 40| 39| 96|00| 0| 0| 0|30.43| 0.00| 21| 17| 87|03| 3| 6|
|03| 0|29.65| 0.00| 44| 42| 93|30| 0| 0| 0|29.92| 0.00| 39| 37| 96|02| 0| 7| 0|30.42| 0.00| 21| 18| 90|01| 1| 8|
|06| 0|29.78| 0.00| 40| 38| 95|33| 1| 10| 0|30.05| 0.00| 32| 30| 91|02| 5| 14| 0|30.44| 0.00| 22| 19| 91|03| 1| 7|
|09| 39|29.89| 0.00| 38| 37| 96|32| 0| 0| 91|30.17| 0.00| 30| 21| 69|02| 0| 13| 98|30.46| 0.00| 24| 21| 88|03| 1| 8|
|12| 893|29.92| 0.00| 46| 39| 79|28| 2| 8| 86|30.22| 0.00| 27| 18| 66|35| 1| 15| 385|30.47| 0.00| 31| 24| 78|02| 2| 10|
|15| 223|29.90| 0.00| 49| 38| 67|28| 2| 6| 137|30.27| 0.00| 25| 17| 73|35| 1| 13| 91|30.42| 0.00| 31| 28| 87|09| 0| 0|
|18| 12|29.91| 0.00| 44| 40| 84|32| 0| 0| 42|30.34| 0.00| 20| 17| 89|04| 2| 13| 25|30.37| 0.00| 30| 27| 88|20| 0| 0|
|21| 0|29.94| 0.21| 41| 40| 95|33| 0| 0| 0|30.39| 0.00| 20| 18| 91|04| 0| 6| 0|30.35| 0.00| 30| 27| 88|20| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| APR 16 | APR 17 | APR 18 |
| | | |
|00| 0|30.28| 0.00| 29| 25| 86|19| 1| 8| 0|29.45| 0.00| 38| 36| 95|24| 0| 1| 0|29.54| 0.00| 31| 25| 78|25| 2| 8|
|03| 0|30.19| 0.00| 30| 27| 90|07| 0| 0| 0|29.47| 0.00| 35| 34| 95|29| 8| 16| 0|29.53| 0.00| 31| 25| 78|26| 1| 8|
|06| 0|30.10| 0.00| 30| 28| 91|07| 0| 0| 0|29.47| 0.00| 34| 32| 95|08| 0| 0| 0|29.54| 0.00| 31| 26| 81|21| 0| 2|
|09| 141|29.97| 0.00| 33| 30| 88|07| 0| 0| 104|29.47| 0.00| 35| 33| 94|30| 0| 0| 257|29.55| 0.00| 32| 30| 92|22| 2| 6|
|12| 72|29.86| 0.00| 38| 33| 84|16| 8| 22| 190|29.46| 0.00| 36| 34| 91|25| 5| 11| 582|29.56| 0.00| 41| 35| 79|25| 8| 13|
|15| 251|29.71| 0.11| 42| 36| 78|18| 6| 18| 250|29.45| 0.00| 38| 30| 72|27| 8| 20| 116|29.62| 0.00| 40| 34| 79|29| 6| 11|
|18| 62|29.57| 0.04| 43| 37| 80|21| 4| 19| 116|29.49| 0.00| 35| 29| 78|28| 3| 19| 113|29.63| 0.00| 41| 33| 75|26| 3| 12|
|21| 0|29.52| 0.00| 36| 34| 94|00| 0| 0| 0|29.53| 0.00| 32| 27| 82|24| 0| 5| 0|29.67| 0.00| 38| 32| 80|25| 2| 12|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Precipitation | 0.10 | 0.18 | 0.25 | 0.32 | 0.40 | 0.46 | 0.50 | 0.53 | 0.56 | 0.59 | 0.62 | 0.64 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Date | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Time | 1359 | 1402 | 1403 | 1407 | 1410 | 1416 | 1431 | 1438 | 1454 | 1518 | 1548 | 1609 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
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 2018: Westford
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+
| | | | | | | | | | | | | | | | | | | | | | |
| | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind |
| | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+
| | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | |
| | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | |
| | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | |
| | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | |
| | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | |
| H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G |
| o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u |
| u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s |
| r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| APR 19 | APR 20 | APR 21 |
| | | |
|00| 0|29.66| 0.00| 36| 31| 80|25| 5| 14| 0|29.87| 0.00| 30| 28| 93|30| 5| 15| 0|30.25| 0.00| 36| 29| 73|03| 0| 0|
|03| 0|29.65| 0.00| 35| 30| 83|25| 1| 10| 0|29.90| 0.00| 29| 27| 93|30| 10| 20| 0|30.26| 0.00| 36| 27| 70|31| 0| 2|
|06| 0|29.65| 0.00| 33| 30| 89|27| 0| 5| 0|29.97| 0.00| 29| 26| 91|30| 7| 15| 5|30.27| 0.00| 32| 25| 76|31| 0| 0|
|09| 232|29.67| 0.00| 34| 31| 90|31| 2| 8| 67|30.06| 0.00| 29| 27| 94|31| 0| 12| 471|30.30| 0.00| 39| 26| 60|31| 3| 9|
|12| 448|29.68| 0.00| 38| 30| 71|31| 4| 11| 218|30.12| 0.00| 31| 29| 91|29| 0| 0| 826|30.29| 0.00| 45| 29| 54|02| 1| 12|
|15| 367|29.71| 0.00| 40| 28| 63|31| 3| 8| 206|30.15| 0.08| 36| 30| 78|29| 5| 15| 766|30.24| 0.00| 49| 27| 42|31| 6| 16|
|18| 46|29.76| 0.00| 33| 31| 91|32| 4| 13| 54|30.19| 0.00| 37| 30| 75|23| 0| 5| 232|30.23| 0.00| 50| 26| 39|33| 0| 10|
|21| 0|29.84| 0.00| 31| 29| 93|30| 5| 16| 0|30.24| 0.00| 38| 29| 71|24| 0| 4| 0|30.27| 0.00| 41| 22| 47|30| 0| 1|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| APR 22 | APR 23 | APR 24 |
| | | |
|00| 0|30.28| 0.00| 37| 21| 52|30| 0| 0| 0|30.37| 0.00| 36| 19| 49|02| 0| 0| 0|30.26| 0.00| 46| 16| 30|18| 0| 0|
|03| 0|30.30| 0.00| 34| 24| 65|01| 0| 0| 0|30.38| 0.00| 30| 22| 70|18| 0| 0| 0|30.24| 0.00| 48| 24| 39|20| 3| 12|
|06| 5|30.33| 0.00| 31| 23| 70|01| 0| 0| 7|30.41| 0.00| 31| 21| 67|18| 0| 0| 5|30.24| 0.00| 48| 25| 41|20| 3| 12|
|09| 482|30.37| 0.00| 42| 23| 47|02| 0| 0| 492|30.46| 0.00| 49| 26| 40|19| 1| 9| 490|30.24| 0.00| 57| 29| 35|21| 8| 19|
|12| 817|30.38| 0.00| 50| 23| 35|31| 2| 7| 828|30.43| 0.00| 58| 20| 23|20| 0| 4| 819|30.19| 0.00| 65| 34| 31|22| 2| 10|
|15| 724|30.35| 0.00| 53| 23| 31|35| 3| 16| 744|30.35| 0.00| 63| 20| 19|21| 4| 8| 737|30.12| 0.00| 69| 29| 22|21| 9| 14|
|18| 258|30.32| 0.00| 54| 22| 29|03| 1| 13| 186|30.29| 0.00| 64| 17| 16|19| 0| 9| 141|30.08| 0.00| 66| 28| 24|19| 1| 10|
|21| 0|30.36| 0.00| 40| 24| 53|02| 0| 0| 0|30.27| 0.00| 50| 22| 33|21| 0| 0| 0|30.06| 0.00| 60| 23| 24|21| 0| 7|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| APR 25 | APR 26 | APR 27 |
| | | |
|00| 0|30.06| 0.00| 57| 33| 39|21| 7| 20| | | | | | | | | | | | | | | | | | |
|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 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|29.956| 33| 24| 74| 2.2| 25 | 1.6|
|03| 0|29.950| 31| 24| 78| 2.3| 27 | 1.6|
|06| 1|29.967| 29| 23| 80| 2.0| 26 | 1.1|
|09| 271|29.988| 34| 25| 71| 2.6| 25 | 1.9|
|12| 480|29.979| 39| 25| 61| 3.9| 25 | 2.7|
|15| 373|29.950| 41| 25| 56| 4.1| 27 | 3.0|
|18| 110|29.939| 39| 25| 62| 2.3| 27 | 1.7|
|21| 0|29.966| 34| 25| 71| 1.7| 26 | 1.4|
+--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
April 2018: Westford
---+-----------------------------------------------------------+-----------------------------------------------------------+---
| | |
D| A.M. Hour Ending at | P.M. Hour Ending at |D
a| | |a
t+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+t
e| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |e
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
01| | | | | |0.01|0.02|0.01| | | | | | | | | | | | | | | | |01
02| | | | | | | | | | | | | | | | | | | | | | | | |02
03| | | | | | | | | | | | | | | | | | |0.01| | | |0.02|0.02|03
04|0.02|0.02|0.03|0.03|0.02|0.04|0.04|0.06|0.04|0.03|0.11|0.08|0.05|0.01| | | | | | | | | | |04
05| | | | | | | | | | | | | | | | | | | | | | | | |05
| | | | | | | | | | | | | | | | | | | | | | | | |
06| | | | | | | | | | | | | | | | | |0.02|0.01| | | | | |06
07| | | | | | | | | |0.01|0.01|0.01| | | | | | | | | | | | |07
08| | | | | | | | | | | | | | | | | | | | | | | | |08
09| | | | | | | | | | |0.01| | | | | | | | | | | | | |09
10| | | | | | | | | | | | | | | | | | | | | | | | |10
| | | | | | | | | | | | | | | | | | | | | | | | |
11| | | | | | | | |0.01| | | | | | | | | | | | | | | |11
12| | | | | | | | | | | | | | | | |0.02|0.04|0.04|0.15|0.03|0.04| |0.01|12
13| | |0.01| | | | | | | | | | | | | | | |0.04|0.08|0.12|0.07|0.06|0.07|13
14|0.04|0.04| |0.01|0.01| | | | | | | | | | | | | | | | | | | |14
15| | | | | | | | | | | | | | |0.02| |0.01|0.01| | | | | | |15
| | | | | | | | | | | | | | | | | | | | | | | | |
16| | | | | | | | | | | |0.02|0.02|0.32|0.24|0.06|0.06|0.05|0.19|0.04| | |0.01| |16
17|0.01|0.02|0.01|0.01|0.01| |0.01| | |0.02|0.02| | | | |0.01| | | | | | | | |17
18| | | | | | | | | |0.03| | | | | | | | | | | | | | |18
19| | | | | | | | |0.02| | | | | | | | | | |0.01| | | | |19
20| | | | | | | | | | | | |0.01|0.04|0.04|0.02|0.02|0.01|0.01| | |0.01| |0.01|20
| | | | | | | | | | | | | | | | | | | | | | | | |
21| | | | | | | | |0.01|0.01| | | | | | | | | | | | | | |21
22| | | | | | | | | | | | | | | | | | | | | | | | |22
23| | | | | | | | | | | | | | | | | | | | | | | | |23
24| | | | | | | | | | | | | | | | | | | | | | | | |24
25| | | | | | | | | | | | | | | | | | | | | | | | |25
| | | | | | | | | | | | | | | | | | | | | | | | |
26| | | | | | | | | | | | | | | | | | | | | | | | |26
27| | | | | | | | | | | | | | | | | | | | | | | | |27
28| | | | | | | | | | | | | | | | | | | | | | | | |28
29| | | | | | | | | | | | | | | | | | | | | | | | |29
30| | | | | | | | | | | | | | | | | | | | | | | | |30
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
Sum|0.07|0.08|0.05|0.05|0.04|0.05|0.07|0.07|0.08|0.10|0.15|0.11|0.08|0.37|0.30|0.09|0.11|0.13|0.30|0.28|0.15|0.12|0.09|0.11|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.)
|
 |
Current Radar Loop:
Sun Position
|
|
