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Westford: May 2013
LOCAL CLIMATOLOGICAL DATA
Monthly Summary
May 2013
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| 77.2 | 46.2 | 61.7 | 63.2 | 41| 46| 3| 0|.........| 0| 0.00| 0.0| 30.39| 30.22|30.321| 0.8| 0.5|274| 19| W| 8|306| 287 |
|02| 81.9 | 53.1 | 67.5 | 67.2 | 40| 38| 0| 3|.........| 0| 0.00| 0.0| 30.38| 30.25|30.318| 0.9| 0.5|226| 14| S| 7|190| 274 |
|03| 71.7 | 46.6 | 59.1 | 58.9 | 35| 42| 5| 0|.........| 0| 0.00| 0.0| 30.43| 30.28|30.344| 1.5| 1.1|204| 18|SSW| 8|172| 298 |
|04| 74.8 | 45.0 | 59.9 | 61.4 | 41| 49| 5| 0|.........| 0| 0.00| 0.0| 30.30| 30.14|30.225| 1.0| 0.8|300| 16| NW| 9|300| 298 |
|05| 78.9 | 50.4 | 64.7 | 63.8 | 36| 38| 0| 0|.........| 0| 0.00| 0.0| 30.19| 30.06|30.127| 1.5| 1.4|215| 20| S| 11|211| 298 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|06| 78.1 | 49.7 | 63.9 | 64.3 | 34| 34| 1| 0|.........| 0| 0.00| 0.0| 30.14| 29.99|30.073| 1.1| 1.0|224| 13| SW| 7|220| 295 |
|07| 82.7*| 54.0 | 68.3*| 66.9 | 42| 44| 0| 4|.........| 0| 0.00| 0.0| 30.08| 29.97|30.030| 1.5| 1.5|215| 17|SSW| 9|216| 297 |
|08| 80.4 | 55.8 | 68.1 | 66.4 | 51| 60| 0| 3|.........| 0| 0.03| 0.0| 30.09| 29.96|30.028| 1.8| 1.8|200| 19| S| 10|201| 240 |
|09| 71.5 | 55.2 | 63.3 | 62.6 | 54| 76| 1| 0|.........| 0| 0.13| 0.0| 29.96| 29.80|29.864| 1.1| 1.1|214| 18| S| 8|210| 213 |
|10| 71.1 | 53.3 | 62.2 | 60.2 | 53| 79| 3| 0|.........| 0| T | 0.0| 29.94| 29.73|29.864| 0.3| 0.2|292| 8| NW| 5|306| 122 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|11| 68.2 | 45.8 | 57.0 | 59.6 | 53| 80| 8| 0|.........| 0| 0.28| 0.0| 29.74| 29.55|29.622| 3.3| 2.7|232| 23| S| 12|208| 120 |
|12| 57.5 | 40.1 | 48.8 | 48.7 | 37| 66| 16| 0|.........| 0| 0.00| 0.0| 29.71| 29.58|29.633| 2.7| 2.5|269| 28| NW| 17|293| 148 |
|13| 50.4 | 36.1 | 43.3 | 42.2 | 29| 59| 22| 0|.........| 0| 0.00| 0.0| 30.02| 29.69|29.846| 3.8| 3.7|263| 24| W| 13|286| 187 |
|14| 56.6 | 29.1*| 42.8*| 43.5 | 28| 60| 22| 0|.........| 0| 0.01| 0.0| 30.08| 29.97|30.020| 0.8| 0.8|307| 19| NW| 11|299| 309 |
|15| 63.8 | 31.1 | 47.5 | 47.5 | 36| 67| 17| 0|.........| 0| 0.15| 0.0| 30.00| 29.53|29.771| 2.5| 2.5|209| 28|SSW| 13|223| 189 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|16| 71.8 | 45.1 | 58.5 | 56.1 | 42| 62| 6| 0|.........| 0| 0.01| 0.0| 29.87| 29.56|29.647| 2.2| 1.8|273| 25|WNW| 15|304| 223 |
|17| 65.3 | 42.4 | 53.9 | 52.3 | 40| 65| 11| 0|.........| 0| 0.00| 0.0| 30.18| 29.86|30.039| 0.8| 0.8|316| 16| W| 7|300| 267 |
|18| 70.8 | 38.0 | 54.4 | 55.4 | 38| 58| 10| 0|.........| 0| 0.00| 0.0| 30.27| 30.18|30.213| 0.3| 0.3|294| 12|WNW| 6|298| 309 |
|19| 68.3 | 45.4 | 56.9 | 55.9 | 47| 74| 8| 0|.........| 0| 0.14| 0.0| 30.23| 30.04|30.167| 1.4| 1.4|213| 20|SSW| 9|220| 128 |
|20| 70.4 | 54.3 | 62.3 | 59.0 | 55| 87| 3| 0|.........| 0| 0.09| 0.0| 30.04| 29.92|29.959| 2.1| 2.1|215| 22| SW| 11|210| 95 |
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+--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- |
+------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+
|1411.4| 916.7|------|------|---|----| 141| 10| Days | 0.84| 0.0| 30.43| 29.53|30.006| 1.6| 1.2|239| 28| NW| 17|293| ---- |
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg |
+------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+
| 70.6| 45.8| 58.2 | 57.8 | 42|59.2|----|----|≥.01 Inch 8| 8.48| 80.8| 3 | 15 |------|----|----|---| 12+ | 12 | 230|
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+
| | 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 |7130| 10|Thunder 0|Precipitation | Snow, Ice Plts | and Date |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+
| ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 0.28| 11 | 0.0 | - | 0 | - |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+
| 0 | 0 | 2 | 0 |----|----| Clear 7 Partly Cloudy 6 Cloudy 7 |
+--------+---------+--------+--------+----+----+------------------------------------------+
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 2013: 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|30.24| 0.00| 56| 42| 59|14| 0| 0| 0|30.33| 0.00| 56| 40| 55|21| 0| 0| 0|30.33| 0.00| 57| 36| 46|18| 4| 11|
|04| 0|30.31| 0.00| 49| 38| 67|14| 0| 0| 0|30.32| 0.00| 57| 33| 40|20| 1| 7| 0|30.38| 0.00| 50| 28| 43|17| 5| 10|
|07| 35|30.35| 0.00| 52| 35| 53|19| 0| 7| 39|30.37| 0.00| 55| 38| 52|20| 1| 7| 33|30.42| 0.00| 48| 33| 55|19| 1| 7|
|10| 636|30.39| 0.00| 65| 39| 38|18| 0| 6| 635|30.37| 0.00| 69| 41| 37|18| 0| 4| 661|30.41| 0.00| 60| 35| 39|20| 2| 10|
|13| 868|30.33| 0.00| 76| 45| 33|26| 4| 8| 837|30.33| 0.00| 77| 43| 29|31| 3| 7| 863|30.35| 0.00| 66| 38| 35|25| 0| 14|
|16| 605|30.30| 0.00| 75| 44| 33|29| 2| 9| 682|30.27| 0.00| 81| 45| 28|31| 4| 11| 628|30.29| 0.00| 70| 39| 32|24| 0| 6|
|19| 98|30.31| 0.00| 74| 41| 31|29| 0| 4| 11|30.26| 0.00| 73| 47| 40|04| 1| 5| 95|30.28| 0.00| 68| 37| 33|28| 1| 4|
|22| 0|30.33| 0.00| 61| 41| 48|33| 0| 0| 0|30.29| 0.00| 67| 40| 38|30| 0| 0| 0|30.29| 0.00| 55| 38| 54|30| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 4 | MAY 5 | MAY 6 |
| | | |
|01| 0|30.29| 0.00| 50| 38| 62|30| 0| 0| 0|30.16| 0.00| 56| 37| 48|20| 1| 6| 0|30.11| 0.00| 57| 33| 40|18| 0| 7|
|04| 0|30.27| 0.00| 47| 38| 71|20| 0| 4| 0|30.16| 0.00| 53| 35| 51|21| 1| 7| 0|30.10| 0.00| 54| 32| 43|20| 0| 5|
|07| 30|30.29| 0.00| 48| 41| 74|19| 0| 1| 33|30.18| 0.00| 53| 34| 50|20| 3| 10| 44|30.13| 0.00| 52| 33| 48|21| 0| 6|
|10| 652|30.29| 0.00| 67| 44| 44|21| 0| 0| 652|30.18| 0.00| 65| 36| 35|22| 5| 16| 652|30.14| 0.00| 65| 41| 42|23| 3| 8|
|13| 865|30.23| 0.00| 73| 41| 32|29| 0| 6| 858|30.14| 0.00| 74| 39| 28|32| 0| 4| 860|30.08| 0.00| 75| 43| 32|26| 0| 8|
|16| 621|30.17| 0.00| 74| 41| 31|31| 2| 8| 633|30.08| 0.00| 79| 40| 25|32| 1| 7| 626|30.02| 0.00| 78| 41| 27|21| 2| 11|
|19| 98|30.14| 0.00| 72| 41| 33|30| 0| 3| 102|30.06| 0.00| 76| 40| 27|26| 0| 1| 104|29.99| 0.00| 74| 33| 22|23| 0| 8|
|22| 0|30.15| 0.00| 57| 40| 53|29| 0| 0| 0|30.09| 0.00| 62| 37| 40|19| 0| 4| 0|30.02| 0.00| 58| 23| 26|19| 0| 3|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 7 | MAY 8 | MAY 9 |
| | | |
|01| 0|30.04| 0.00| 58| 28| 32|19| 0| 7| 0|30.04| 0.00| 60| 41| 50|19| 0| 4| 0|29.94| 0.00| 59| 55| 87|17| 0| 0|
|04| 0|30.04| 0.00| 57| 43| 61|19| 2| 11| 0|30.04| 0.00| 61| 50| 67|20| 4| 8| 0|29.90| 0.06| 58| 56| 93|17| 0| 0|
|07| 39|30.06| 0.00| 56| 45| 67|21| 4| 9| 35|30.08| 0.00| 60| 51| 72|21| 5| 10| 54|29.89| 0.00| 57| 55| 95|17| 1| 4|
|10| 654|30.08| 0.00| 68| 49| 51|18| 0| 8| 659|30.08| 0.00| 72| 53| 52|19| 0| 9| 770|29.89| 0.00| 66| 57| 73|20| 6| 10|
|13| 865|30.04| 0.00| 77| 43| 30|26| 2| 8| 485|30.02| 0.00| 76| 47| 36|13| 0| 10| 826|29.85| 0.00| 70| 54| 58|24| 6| 15|
|16| 629|29.99| 0.00| 82| 41| 24|25| 1| 8| 722|29.99| 0.00| 76| 52| 44|19| 3| 11| 571|29.81| 0.00| 71| 52| 51|21| 2| 9|
|19| 104|29.98| 0.00| 79| 44| 29|31| 0| 1| 21|30.00| 0.00| 64| 55| 73|22| 0| 0| 81|29.80| 0.00| 66| 53| 63|20| 0| 4|
|22| 0|30.02| 0.00| 60| 44| 54|31| 0| 0| 0|30.00| 0.00| 60| 55| 84|17| 0| 5| 0|29.84| 0.00| 57| 51| 79|21| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 10 | MAY 11 | MAY 12 |
| | | |
|01| 0|29.85| 0.00| 57| 51| 81|21| 0| 0| 0|29.71| 0.00| 61| 53| 76|21| 1| 4| 0|29.65| 0.00| 45| 42| 88|29| 0| 0|
|04| 0|29.86| 0.00| 55| 52| 87|21| 0| 0| 0|29.66| 0.00| 59| 56| 90|20| 3| 10| 0|29.62| 0.00| 47| 44| 92|24| 1| 4|
|07| 25|29.91| 0.00| 57| 53| 85|30| 0| 5| 14|29.62| 0.08| 59| 56| 92|20| 0| 13| 81|29.62| 0.00| 48| 44| 88|21| 0| 1|
|10| 123|29.93| 0.00| 58| 54| 87|30| 0| 4| 285|29.59| 0.00| 64| 58| 83|21| 5| 18| 181|29.59| 0.00| 55| 45| 70|25| 3| 12|
|13| 364|29.92| 0.00| 67| 55| 65|06| 0| 1| 93|29.56| 0.00| 65| 57| 76|20| 6| 18| 51|29.59| 0.00| 51| 38| 61|27| 1| 9|
|16| 132|29.87| 0.00| 67| 55| 66|31| 0| 5| 174|29.55| 0.00| 66| 58| 76|25| 3| 13| 350|29.61| 0.00| 54| 28| 36|28| 7| 16|
|19| 56|29.83| 0.00| 61| 56| 85|28| 0| 0| 62|29.62| 0.00| 56| 46| 69|29| 6| 17| 134|29.66| 0.00| 51| 29| 43|26| 5| 17|
|22| 0|29.77| 0.00| 59| 54| 84|15| 0| 0| 0|29.66| 0.00| 51| 44| 77|29| 0| 7| 0|29.70| 0.00| 44| 26| 48|25| 5| 16|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 13 | MAY 14 | MAY 15 |
| | | |
|01| 0|29.70| 0.00| 41| 29| 62|25| 7| 22| 0|30.01| 0.00| 40| 34| 77|26| 0| 0| 0|29.99| 0.00| 34| 27| 75|19| 0| 0|
|04| 0|29.73| 0.00| 38| 25| 58|25| 3| 12| 0|30.02| 0.00| 32| 28| 86|05| 0| 0| 0|29.97| 0.00| 33| 26| 76|19| 0| 0|
|07| 63|29.77| 0.00| 39| 27| 63|24| 3| 12| 90|30.07| 0.00| 34| 31| 89|05| 0| 0| 46|29.95| 0.00| 38| 28| 68|22| 0| 2|
|10| 294|29.83| 0.00| 41| 29| 61|27| 3| 19| 193|30.06| 0.00| 46| 28| 49|18| 0| 4| 710|29.86| 0.00| 54| 31| 41|20| 5| 11|
|13|1095|29.87| 0.00| 47| 30| 50|26| 5| 14| 956|30.04| 0.00| 53| 27| 37|29| 4| 10| 868|29.71| 0.00| 64| 35| 35|19| 5| 15|
|16| 213|29.90| 0.00| 47| 27| 45|23| 2| 13| 659|30.00| 0.00| 55| 25| 31|01| 2| 13| 25|29.61| 0.04| 49| 44| 83|21| 3| 12|
|19| 193|29.93| 0.00| 45| 33| 61|27| 1| 9| 128|29.97| 0.00| 54| 26| 34|32| 0| 3| 47|29.53| 0.00| 51| 46| 81|20| 3| 17|
|22| 0|29.99| 0.00| 39| 33| 78|18| 0| 0| 0|30.00| 0.00| 37| 28| 72|06| 0| 0| 0|29.60| 0.00| 53| 47| 79|20| 0| 5|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 16 | MAY 17 | MAY 18 |
| | | |
|01| 0|29.58| 0.00| 52| 48| 84|20| 1| 6| 0|29.88| 0.00| 46| 37| 72|28| 0| 8| 0|30.18| 0.00| 41| 38| 89|03| 0| 0|
|04| 0|29.57| 0.00| 49| 45| 86|20| 0| 6| 0|29.91| 0.00| 45| 39| 80|31| 0| 4| 0|30.20| 0.00| 40| 37| 88|22| 0| 0|
|07| 39|29.59| 0.00| 51| 43| 74|21| 1| 10| 77|29.99| 0.00| 46| 40| 81|32| 2| 11| 37|30.25| 0.00| 43| 41| 94|22| 0| 0|
|10| 687|29.60| 0.00| 63| 42| 47|25| 7| 16| 782|30.05| 0.00| 53| 41| 64|29| 0| 7| 689|30.26| 0.00| 62| 41| 47|17| 0| 0|
|13| 935|29.58| 0.00| 72| 37| 28|29| 11| 23|1018|30.07| 0.00| 60| 40| 48|01| 2| 8| 909|30.23| 0.00| 68| 37| 32|30| 1| 6|
|16| 323|29.65| 0.00| 60| 44| 54|32| 1| 14| 341|30.09| 0.00| 61| 41| 47|31| 0| 8| 650|30.19| 0.00| 70| 35| 28|30| 0| 6|
|19| 25|29.74| 0.00| 54| 41| 60|31| 0| 7| 98|30.10| 0.00| 61| 42| 50|03| 0| 0| 67|30.19| 0.00| 65| 39| 38|30| 0| 0|
|22| 0|29.83| 0.00| 51| 39| 64|32| 5| 13| 0|30.16| 0.00| 45| 39| 78|03| 0| 0| 0|30.20| 0.00| 51| 39| 64|30| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Precipitation | 0.07 | 0.08 | 0.08 | 0.08 | 0.08 | 0.09 | 0.09 | 0.10 | 0.11 | 0.13 | 0.14 | 0.15 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Date | 20 | 20 | 20 | 20 | 20 | 15 | 11 | 15 | 15 | 15 | 15 | 11 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Time | 0717 | 0720 | 0720 | 0720 | 0720 | 1543 | 0707 | 1543 | 1636 | 1648 | 1648 | 0433 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
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 2013: 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|30.19| 0.00| 47| 38| 71|06| 0| 0| 0|30.00| 0.00| 55| 53| 93|20| 5| 18| | | | | | | | | |
|04| 0|30.21| 0.00| 52| 40| 63|20| 0| 6| 0|29.94| 0.00| 56| 52| 89|21| 4| 20| | | | | | | | | |
|07| 72|30.22| 0.00| 47| 42| 83|20| 0| 0| 40|29.95| 0.00| 57| 54| 90|22| 5| 13| | | | | | | | | |
|10| 408|30.22| 0.00| 63| 49| 60|24| 0| 6| 63|29.98| 0.00| 57| 55| 93|21| 7| 14| | | | | | | | | |
|13| 279|30.18| 0.00| 66| 51| 57|21| 0| 10| 74|29.97| 0.00| 60| 57| 89|23| 0| 0| | | | | | | | | |
|16| 105|30.16| 0.00| 60| 52| 75|19| 2| 11| 306|29.95| 0.00| 67| 59| 74|29| 2| 9| | | | | | | | | |
|19| 18|30.12| 0.00| 55| 52| 87|18| 0| 3| 128|29.94| 0.00| 67| 58| 74|02| 0| 0| | | | | | | | | |
|22| 0|30.07| 0.00| 55| 53| 93|21| 3| 11| 0|29.94| 0.00| 54| 52| 91|02| 0| 0| | | | | | | | | |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 22 | MAY 23 | MAY 24 |
| | | |
|01| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|04| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|07| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|10| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|13| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|16| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|19| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|22| | | | | | | | | | | | | | | | | | | | | | | | | | | |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 25 | MAY 26 | MAY 27 |
| | | |
|01| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|04| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|07| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|10| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|13| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|16| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|19| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|22| | | | | | | | | | | | | | | | | | | | | | | | | | | |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| 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|30.011| 51| 40| 67| 1.0| 22 | 0.9|
|04| 0|30.011| 49| 40| 72| 1.2| 21 | 1.1|
|07| 46|30.035| 50| 41| 74| 1.4| 22 | 1.2|
|10| 519|30.040| 61| 44| 56| 2.3| 23 | 2.1|
|13| 698|30.006| 67| 43| 45| 2.5| 26 | 2.0|
|16| 450|29.975| 67| 43| 46| 2.1| 27 | 1.4|
|19| 84|29.972| 63| 43| 52| 0.9| 27 | 0.7|
|22| 0|29.997| 54| 41| 65| 0.7| 27 | 0.5|
+--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
May 2013: 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| | | | | | | | | | | | | | | | | | | | | | | | |04
05| | | | | | | | | | | | | | | | | | | | | | | | |05
| | | | | | | | | | | | | | | | | | | | | | | | |
06| | | | | | | | | | | | | | | | | | | | | | | | |06
07| | | | | | | | | | | | | | | | | | | | | | | | |07
08| | | | | | | | | | | | | | | | | | | | | |0.02| |0.01|08
09|0.01|0.01|0.01|0.08|0.01|0.01| | | | | | | | | | | | | | | | | | |09
10| | | | | | | | | | | | | | | | | | | | | | | | |10
| | | | | | | | | | | | | | | | | | | | | | | | |
11| |0.02|0.05|0.04|0.05|0.02|0.07|0.02| | | | | | |0.01| | | | | | | | | |11
12| | | | | | | | | | | | | | | | | | | | | | | | |12
13| | | | | | | | | | | | | | | | | | | | | | | | |13
14| | | | | | | |0.01| | | | | | | | | | | | | | | | |14
15| | | | | | | | | | | | | | |0.01|0.09|0.04|0.01| | | | | | |15
| | | | | | | | | | | | | | | | | | | | | | | | |
16| | | | | | | |0.01| | | | | | | | | | | | | | | | |16
17| | | | | | | | | | | | | | | | | | | | | | | | |17
18| | | | | | | | | | | | | | | | | | | | | | | | |18
19| | | | | | | | | | | | | | | | |0.01|0.02|0.02|0.02|0.04|0.02|0.01| |19
20|0.01| | | | | | |0.08| | | | | | | | | | | | | | | | |20
| | | | | | | | | | | | | | | | | | | | | | | | |
21| | | | | | | | | | | | | | | | | | | | | | | | |21
22| | | | | | | | | | | | | | | | | | | | | | | | |22
23| | | | | | | | | | | | | | | | | | | | | | | | |23
24| | | | | | | | | | | | | | | | | | | | | | | | |24
25| | | | | | | | | | | | | | | | | | | | | | | | |25
| | | | | | | | | | | | | | | | | | | | | | | | |
26| | | | | | | | | | | | | | | | | | | | | | | | |26
27| | | | | | | | | | | | | | | | | | | | | | | | |27
28| | | | | | | | | | | | | | | | | | | | | | | | |28
29| | | | | | | | | | | | | | | | | | | | | | | | |29
30| | | | | | | | | | | | | | | | | | | | | | | | |30
31| | | | | | | | | | | | | | | | | | | | | | | | |31
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
Sum|0.02|0.03|0.06|0.12|0.06|0.03|0.07|0.12|0.00|0.00|0.00|0.00|0.00|0.00|0.02|0.09|0.05|0.03|0.02|0.02|0.04|0.04|0.01|0.01|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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Current Radar Loop:
Sun Position
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