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Westford: January 2021
LOCAL CLIMATOLOGICAL DATA
Monthly Summary
January 2021
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| 29.2 | 20.4 | 24.8 | 25.3 | 19| 75| 40| 0|.........| T| T | T| 30.52| 30.07|30.376| 0.6| 0.4|217| 12|SSE| 6|166| 35 |
|02| 32.2 | 23.1 | 27.7 | 26.7 | 25| 93| 37| 0|.........| 5| 0.00| 5.0| 30.14| 29.68|29.905| 1.2| 0.7|270| 16|WNW| 8|288| 2 |
|03| 29.5 | 23.8 | 26.6 | 26.7 | 24| 90| 38| 0|.........| 5| 0.00| 0.1| 30.14| 29.97|30.059| 0.7| 0.7|168| 13| S| 7|170| 3 |
|04| 34.5 | 26.6 | 30.5 | 29.5 | 27| 92| 34| 0|.........| 4| T | T| 30.03| 29.94|29.981| 0.1| 0.0| 34| 7| W| 4|276| 6 |
|05| 28.7 | 22.0 | 25.4 | 25.1 | 24| 95| 39| 0|.2.......| 4| T | T| 30.00| 29.92|29.960| 0.6| 0.5|295| 8|NNW| 5|267| 4 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|06| 25.0 | 20.0 | 22.5 | 22.5 | 21| 92| 42| 0|.........| 4| 0.00| 0.3| 30.11| 29.99|30.060| 0.8| 0.8|337| 11| NW| 6|353| 4 |
|07| 25.4 | 17.3 | 21.3 | 21.7 | 19| 89| 44| 0|.........| 4| T | T| 30.22| 30.11|30.180| 1.5| 1.5|317| 16|WNW| 7|290| 6 |
|08| 21.5 | 10.5 | 16.0 | 16.9 | 14| 86| 48| 0|.........| 4| T | T| 30.17| 29.97|30.078| 1.3| 1.2|312| 14| W| 8|287| 27 |
|09| 25.9 | 13.7 | 19.8 | 19.1 | 12| 73| 45| 0|.........| 4| 0.00| 0.0| 30.08| 29.95|30.003| 1.1| 1.1|349| 16|NNW| 9|356| 47 |
|10| 22.8 | 10.9 | 16.8 | 18.9 | 16| 88| 48| 0|.........| 4| 0.00| 0.0| 30.30| 30.08|30.226| 0.4| 0.3|348| 10|NNW| 5| 17| 25 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|11| 26.4 | 13.4 | 19.9 | 22.7 | 20| 89| 45| 0|.........| 4| 0.01| 0.2| 30.32| 30.06|30.210| 4.4| 4.4|173| 16|SSE| 10|169| 13 |
|12| 31.9 | 25.5 | 28.7 | 27.9 | 25| 87| 36| 0|.........| 4| 0.03| 0.3| 30.08| 29.99|30.036| 2.2| 2.1|183| 16|SSE| 7|164| 19 |
|13| 31.2 | 26.7 | 29.0 | 29.0 | 25| 87| 36| 0|.........| 4| T | T| 30.00| 29.78|29.892| 3.2| 3.2|174| 15|SSE| 8|174| 13 |
|14| 34.6 | 29.1 | 31.8 | 31.6 | 27| 83| 33| 0|.........| 3| T | T| 29.92| 29.76|29.809| 1.4| 1.3|174| 12|SSE| 7|171| 15 |
|15| 39.4*| 19.5 | 29.5 | 30.0 | 25| 82| 35| 0|.........| 3| 0.00| 0.0| 30.03| 29.87|29.964| 1.5| 1.4|143| 21|SSE| 10|171| 73 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|16| 37.4 | 30.6 | 34.0*| 33.5 | 31| 90| 31| 0|.........| 6| 0.45| 3.1| 29.88| 29.15|29.444| 1.3| 1.1|151| 20|SSE| 9|151| 6 |
|17| 31.8 | 26.5 | 29.1 | 30.0 | 28| 91| 35| 0|.........| 8| 0.33| 2.6| 29.52| 29.14|29.328| 2.6| 2.5|234| 23|SSW| 11|241| 4 |
|18| 26.5 | 11.7 | 19.1 | 20.1 | 17| 88| 45| 0|.........|10| 0.08| 2.4| 29.89| 29.51|29.667| 1.2| 1.0|278| 13|WSW| 8|264| 9 |
|19| 24.5 | 4.6 | 14.6 | 15.9 | 13| 88| 50| 0|.........| 9| 0.01| 0.3| 30.01| 29.88|29.944| 1.3| 1.2|181| 11|SSE| 7|167| 16 |
|20| 24.7 | -1.7 | 11.5 | 16.8 | 14| 88| 53| 0|.........|12| 0.20| 3.7| 30.00| 29.83|29.900| 0.9| 0.9|280| 14| N| 9|285| 13 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|21| 27.2 | -2.0*| 12.6 | 15.2 | 12| 87| 52| 0|.........|12| 0.11| 1.4| 29.95| 29.47|29.644| 4.8| 4.7|165| 24|SSE| 12|169| 5 |
|22| 30.9 | 16.3 | 23.6 | 25.8 | 22| 84| 41| 0|.........|11| 0.02| 0.2| 29.82| 29.47|29.615| 2.4| 1.6|190| 17|SSE| 9|175| 14 |
|23| 16.4 | 1.5 | 8.9 | 9.1 | 4| 79| 56| 0|.........|11| 0.02| 1.2| 30.12| 29.82|29.996| 3.9| 3.8|281| 18| W| 10|285| 26 |
|24| 14.7 | 0.7 | 7.7*| 7.5 | 1| 73| 57| 0|.........|10| 0.00| 0.0| 30.15| 30.08|30.117| 3.6| 3.4|281| 21|WNW| 13|289| 103 |
|25| | | | | | | | | | | | | | | | | | | | | | | |
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|26| | | | | | | | | | | | | | | | | | | | | | | |
|27| | | | | | | | | | | | | | | | | | | | | | | |
|28| | | | | | | | | | | | | | | | | | | | | | | |
|29| | | | | | | | | | | | | | | | | | | | | | | |
|30| | | | | | | | | | | | | | | | | | | | | | | |
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|31| | | | | | | | | | | | | | | | | | | | | | | |
+--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- |
+------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| 672.3| 390.7|------|------|---|----|1020| 0| Days | 1.26| 20.8| 30.52| 29.15|30.058| 1.8| 0.9|216| 24|SSE| 13|289| ---- |
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg |
+------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+
| 28.0| 16.3| 22.1 | 22.8 | 19|86.2|----|----|≥.01 Inch 10| 1.26| 35.3| 1 | 17 |------|----|----|---| 21 | 24 | 20|
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+
| | Season |Snow, Ice | | |
| Number of Days | to Date |≥1.0 Inch 7| Greatest in 24 Hours and Dates | Greatest Depth on Ground |
+------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice |
| Max Temperature | Min Temperature |3711| 0|Thunder 0|Precipitation | Snow, Ice Plts | and Date |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+
| ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 1| 0.00| - | 5.0 | 2 | 12 | 20+ |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+
| 0 | 20 | 24 | 2 |----|----| Clear 1 Partly Cloudy 2 Cloudy 21 |
+--------+---------+--------+--------+----+----+------------------------------------------+
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
January 2021: 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 |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 1 | JAN 2 | JAN 3 |
| | | |
|00| 0|30.39| 0.00| 21| 16| 82|00| 0| 0| 0|30.07| 0.00| 26| 22| 85|10| 0| 0| 0|30.13| 0.00| 26| 24| 93|28| 0| 0|
|03| 0|30.45| 0.00| 24| 18| 79|00| 0| 3| 0|29.91| 0.00| 26| 24| 93|10| 0| 0| 0|30.14| 0.00| 25| 23| 93|32| 0| 0|
|06| 0|30.47| 0.00| 24| 18| 77|05| 0| 1| 0|29.70| 0.00| 30| 28| 94|14| 0| 11| 0|30.12| 0.00| 25| 23| 93|32| 0| 0|
|09| 42|30.51| 0.00| 25| 20| 78|20| 3| 6| 9|29.69| 0.00| 31| 30| 95|18| 1| 5| 5|30.13| 0.00| 25| 23| 90|16| 1| 6|
|12| 141|30.45| 0.00| 29| 19| 68|23| 4| 7| 9|29.77| 0.00| 27| 25| 93|27| 4| 12| 18|30.05| 0.00| 28| 25| 86|14| 0| 0|
|15| 69|30.41| 0.00| 28| 18| 66|30| 0| 4| 0|29.92| 0.00| 23| 21| 93|30| 3| 10| 14|29.98| 0.00| 29| 26| 87|15| 2| 6|
|18| 0|30.31| 0.00| 24| 18| 77|30| 0| 0| 0|30.04| 0.00| 24| 22| 93|05| 1| 4| 0|30.01| 0.00| 28| 25| 89|15| 1| 10|
|21| 0|30.17| 0.00| 26| 19| 74|17| 3| 9| 0|30.10| 0.00| 26| 24| 93|29| 0| 0| 0|30.01| 0.00| 28| 26| 92|17| 0| 3|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 4 | JAN 5 | JAN 6 |
| | | |
|00| 0|29.97| 0.00| 27| 25| 94|17| 0| 0| 0|29.94| 0.00| 29| 27| 94|35| 0| 0| 0|29.99| 0.00| 22| 21| 94|34| 1| 6|
|03| 0|29.97| 0.00| 27| 26| 95|16| 0| 0| 0|29.94| 0.00| 28| 26| 95|34| 0| 3| 0|30.01| 0.00| 22| 20| 94|30| 1| 4|
|06| 0|29.99| 0.00| 27| 26| 94|08| 0| 0| 0|29.95| 0.00| 26| 25| 95|31| 1| 5| 0|30.03| 0.00| 22| 21| 94|04| 0| 7|
|09| 0|30.02| 0.00| 29| 27| 94|08| 0| 0| 5|29.97| 0.00| 25| 23| 95|28| 0| 4| 9|30.07| 0.00| 23| 21| 94|01| 0| 8|
|12| 19|29.99| 0.00| 33| 30| 87|06| 0| 0| 16|29.94| 0.00| 26| 24| 95|28| 2| 6| 16|30.05| 0.00| 25| 22| 90|34| 1| 10|
|15| 14|29.97| 0.00| 33| 30| 87|27| 0| 4| 12|29.94| 0.00| 26| 24| 95|27| 2| 7| 9|30.07| 0.00| 24| 21| 89|28| 0| 9|
|18| 0|29.99| 0.00| 30| 28| 92|35| 0| 2| 0|29.99| 0.00| 24| 22| 94|27| 0| 2| 0|30.11| 0.00| 23| 20| 90|03| 0| 4|
|21| 0|29.98| 0.00| 29| 28| 93|35| 0| 4| 0|30.00| 0.00| 23| 21| 94|31| 0| 3| 0|30.11| 0.00| 22| 20| 92|33| 0| 2|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 7 | JAN 8 | JAN 9 |
| | | |
|00| 0|30.11| 0.00| 21| 19| 91|28| 2| 8| 0|30.16| 0.00| 20| 17| 89|35| 0| 5| 0|29.97| 0.00| 15| 11| 84|30| 0| 3|
|03| 0|30.15| 0.00| 20| 18| 91|31| 1| 4| 0|30.16| 0.00| 18| 16| 90|30| 3| 6| 0|29.96| 0.00| 16| 12| 84|34| 1| 5|
|06| 0|30.18| 0.00| 19| 17| 93|34| 1| 3| 0|30.14| 0.00| 17| 15| 92|28| 3| 10| 0|29.97| 0.00| 14| 10| 85|00| 2| 4|
|09| 12|30.22| 0.00| 22| 19| 91|30| 3| 11| 7|30.13| 0.00| 17| 15| 90|30| 1| 9| 30|30.01| 0.00| 18| 11| 71|33| 3| 9|
|12| 28|30.18| 0.00| 24| 20| 85|00| 2| 9| 35|30.07| 0.00| 18| 15| 86|01| 2| 5| 128|29.98| 0.00| 24| 9| 53|00| 5| 11|
|15| 7|30.17| 0.00| 25| 21| 85|35| 1| 8| 86|30.03| 0.00| 21| 15| 77|29| 2| 9| 125|29.99| 0.00| 24| 10| 54|34| 4| 11|
|18| 0|30.20| 0.00| 23| 20| 88|32| 1| 4| 0|30.03| 0.00| 14| 11| 86|00| 0| 0| 0|30.03| 0.00| 17| 12| 79|34| 0| 1|
|21| 0|30.20| 0.00| 21| 18| 89|28| 2| 10| 0|30.00| 0.00| 15| 11| 84|30| 0| 0| 0|30.06| 0.00| 22| 15| 76|00| 1| 8|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 10 | JAN 11 | JAN 12 |
| | | |
|00| 0|30.08| 0.00| 22| 17| 83|35| 0| 0| 0|30.29| 0.00| 14| 12| 90|08| 0| 0| 0|30.06| 0.00| 26| 24| 91|17| 5| 11|
|03| 0|30.14| 0.00| 21| 18| 88|29| 2| 7| 0|30.31| 0.00| 19| 18| 93|17| 3| 7| 0|30.04| 0.00| 26| 24| 92|16| 4| 9|
|06| 0|30.18| 0.00| 21| 18| 89|34| 0| 5| 0|30.29| 0.00| 21| 19| 90|17| 5| 10| 0|30.04| 0.00| 26| 24| 92|17| 4| 8|
|09| 14|30.24| 0.00| 20| 17| 88|01| 0| 3| 21|30.28| 0.00| 21| 18| 87|16| 7| 14| 11|30.08| 0.00| 27| 24| 89|17| 2| 6|
|12| 46|30.25| 0.00| 21| 18| 87|01| 0| 3| 49|30.20| 0.00| 25| 20| 83|17| 5| 9| 156|30.03| 0.00| 31| 26| 80|21| 4| 8|
|15| 200|30.24| 0.00| 22| 17| 82|03| 0| 0| 30|30.17| 0.00| 26| 22| 83|17| 2| 11| 19|30.03| 0.00| 31| 25| 81|20| 0| 5|
|18| 0|30.26| 0.00| 16| 13| 89|03| 0| 0| 0|30.14| 0.00| 25| 23| 91|18| 5| 13| 0|30.02| 0.00| 28| 25| 87|20| 0| 0|
|21| 0|30.29| 0.00| 11| 9| 90|03| 0| 0| 0|30.09| 0.00| 25| 24| 93|17| 4| 9| 0|30.02| 0.00| 27| 24| 89|20| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 13 | JAN 14 | JAN 15 |
| | | |
|00| 0|29.99| 0.00| 27| 24| 89|20| 0| 3| 0|29.78| 0.00| 30| 25| 83|16| 4| 12| 0|29.91| 0.00| 29| 27| 92|16| 0| 0|
|03| 0|29.98| 0.00| 27| 25| 93|17| 2| 5| 0|29.78| 0.00| 31| 25| 81|17| 5| 11| 0|29.95| 0.00| 24| 22| 93|16| 0| 0|
|06| 0|29.97| 0.00| 27| 26| 94|17| 3| 6| 0|29.77| 0.00| 31| 26| 82|18| 3| 7| 0|29.97| 0.00| 23| 22| 95|04| 0| 4|
|09| 26|29.95| 0.00| 28| 26| 91|16| 4| 8| 23|29.80| 0.00| 32| 27| 80|17| 1| 7| 37|30.02| 0.00| 23| 22| 95|07| 0| 1|
|12| 63|29.89| 0.00| 31| 26| 84|16| 7| 13| 60|29.79| 0.00| 34| 28| 78|16| 0| 0| 457|29.99| 0.00| 37| 30| 75|13| 2| 6|
|15| 30|29.85| 0.00| 31| 26| 81|17| 4| 10| 23|29.79| 0.00| 34| 28| 79|16| 0| 0| 105|29.97| 0.00| 36| 28| 72|15| 3| 10|
|18| 0|29.82| 0.00| 30| 25| 83|13| 4| 11| 0|29.83| 0.00| 31| 28| 88|16| 0| 0| 0|29.96| 0.00| 34| 27| 76|15| 2| 12|
|21| 0|29.80| 0.00| 30| 25| 83|17| 3| 9| 0|29.89| 0.00| 30| 28| 90|16| 0| 0| 0|29.96| 0.00| 35| 27| 72|15| 4| 13|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 16 | JAN 17 | JAN 18 |
| | | |
|00| 0|29.88| 0.00| 34| 26| 71|14| 2| 13| 0|29.15| 0.00| 31| 30| 96|25| 0| 0| 0|29.51| 0.00| 27| 24| 90|26| 0| 6|
|03| 0|29.82| 0.00| 37| 30| 77|15| 7| 15| 0|29.17| 0.00| 31| 30| 96|20| 0| 0| 0|29.53| 0.00| 25| 22| 90|26| 2| 7|
|06| 0|29.68| 0.00| 37| 32| 82|15| 8| 16| 0|29.21| 0.00| 31| 30| 95|20| 0| 0| 0|29.55| 0.00| 22| 20| 92|28| 4| 9|
|09| 11|29.54| 0.00| 34| 32| 92|07| 0| 0| 9|29.26| 0.00| 31| 29| 92|20| 0| 0| 12|29.60| 0.00| 21| 18| 88|27| 3| 8|
|12| 30|29.35| 0.00| 33| 32| 95|19| 2| 4| 12|29.30| 0.00| 31| 29| 90|20| 1| 8| 33|29.63| 0.00| 21| 17| 85|01| 0| 5|
|15| 11|29.27| 0.00| 33| 32| 94|27| 0| 0| 12|29.37| 0.00| 30| 27| 88|22| 4| 8| 23|29.67| 0.00| 20| 16| 84|29| 0| 0|
|18| 0|29.22| 0.00| 32| 31| 95|25| 0| 0| 0|29.47| 0.00| 29| 26| 88|22| 7| 13| 0|29.77| 0.00| 17| 14| 88|02| 1| 5|
|21| 0|29.19| 0.00| 31| 30| 96|23| 0| 0| 0|29.51| 0.00| 28| 24| 86|22| 10| 22| 0|29.86| 0.00| 16| 13| 89|03| 0| 2|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Precipitation | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Date | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Time | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
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
January 2021: 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 |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 19 | JAN 20 | JAN 21 |
| | | |
|00| 0|29.89| 0.00| 12| 8| 86|01| 0| 3| 0|29.88| 0.00| 24| 23| 94|18| 3| 6| 0|29.95| 0.00| -1| -4| 86|29| 0| 0|
|03| 0|29.92| 0.00| 6| 4| 90|02| 0| 0| 0|29.87| 0.00| 23| 21| 92|30| 0| 3| 0|29.87| 0.00| 2| -1| 87|12| 0| 0|
|06| 0|29.96| 0.00| 5| 3| 90|04| 0| 0| 0|29.84| 0.00| 22| 20| 93|30| 0| 0| 0|29.77| 0.00| 10| 6| 82|15| 6| 10|
|09| 18|30.00| 0.00| 7| 4| 89|04| 0| 0| 9|29.85| 0.00| 22| 20| 92|30| 0| 0| 7|29.68| 0.00| 13| 10| 87|16| 4| 12|
|12| 62|29.97| 0.00| 21| 16| 82|17| 4| 10| 51|29.86| 0.00| 22| 18| 86|29| 2| 10| 21|29.59| 0.00| 18| 15| 88|16| 6| 15|
|15| 56|29.94| 0.00| 23| 18| 80|18| 0| 5| 16|29.92| 0.00| 19| 14| 83|30| 5| 12| 5|29.53| 0.00| 20| 17| 89|17| 6| 13|
|18| 0|29.94| 0.00| 22| 19| 90|18| 1| 4| 0|29.99| 0.00| 11| 6| 79|27| 3| 11| 0|29.52| 0.00| 22| 19| 90|15| 6| 16|
|21| 0|29.92| 0.00| 23| 21| 92|17| 3| 7| 0|29.98| 0.00| 6| 2| 87|29| 0| 0| 0|29.49| 0.00| 25| 22| 88|16| 6| 23|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 22 | JAN 23 | JAN 24 |
| | | |
|00| 0|29.48| 0.00| 27| 23| 86|18| 6| 15| 0|29.82| 0.00| 16| 13| 85|27| 7| 12| 0|30.10| 0.00| 3| -1| 81|27| 2| 11|
|03| 0|29.48| 0.00| 28| 25| 91|16| 6| 11| 0|29.86| 0.00| 14| 10| 87|29| 0| 7| 0|30.11| 0.00| 3| -3| 78|25| 5| 11|
|06| 0|29.49| 0.00| 28| 25| 90|17| 5| 9| 0|29.91| 0.00| 9| 6| 84|27| 3| 12| 0|30.13| 0.00| 3| -2| 76|27| 9| 15|
|09| 0|29.56| 0.00| 29| 26| 91|24| 5| 9| 35|29.98| 0.00| 8| 3| 80|29| 5| 13| 14|30.14| 0.00| 6| -2| 70|26| 7| 12|
|12| 53|29.60| 0.00| 29| 25| 84|27| 0| 6| 97|30.00| 0.00| 11| 3| 72|29| 6| 12| 545|30.10| 0.00| 12| 3| 66|28| 11| 21|
|15| 54|29.64| 0.00| 29| 22| 76|28| 4| 8| 81|30.03| 0.00| 10| 3| 73|30| 6| 14| 332|30.09| 0.00| 14| 5| 66|32| 4| 11|
|18| 0|29.73| 0.00| 23| 18| 80|33| 0| 4| 0|30.10| 0.00| 5| -1| 76|27| 6| 13| 0|30.13| 0.00| 10| 3| 71|33| 0| 4|
|21| 0|29.79| 0.00| 18| 14| 81|21| 0| 3| 0|30.12| 0.00| 6| 0| 76|27| 2| 12| 0|30.13| 0.00| 7| 1| 77|02| 0| 2|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 25 | JAN 26 | JAN 27 |
| | | |
|00| 0|30.12| 0.00| 5| 2| 85|02| 0| 0| | | | | | | | | | | | | | | | | | |
|03| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|06| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|09| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|12| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|15| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|18| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|21| | | | | | | | | | | | | | | | | | | | | | | | | | | |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 28 | JAN 29 | JAN 30 |
| | | |
|00| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|03| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|06| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|09| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|12| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|15| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|18| | | | | | | | | | | | | | | | | | | | | | | | | | | |
|21| | | | | | | | | | | | | | | | | | | | | | | | | | | |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| JAN 31 | | |
| | | |
|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|29.946| 21| 18| 88| 1.3| 21 | 0.7|
|03| 0|29.939| 22| 19| 89| 1.7| 20 | 1.0|
|06| 0|29.930| 22| 19| 89| 2.4| 21 | 1.2|
|09| 15|29.947| 22| 19| 88| 2.2| 23 | 1.2|
|12| 89|29.917| 25| 21| 82| 2.9| 24 | 1.2|
|15| 56|29.916| 25| 20| 81| 2.2| 27 | 1.0|
|18| 0|29.942| 23| 19| 86| 1.5| 21 | 0.8|
|21| 0|29.943| 22| 19| 87| 1.6| 19 | 1.2|
+--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
January 2021: 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| | | | | | | | | | | | | | | | | | | | | | | | |08
09| | | | | | | | | | | | | | | | | | | | | | | | |09
10| | | | | | | | | | | | | | | | | | | | | | | | |10
| | | | | | | | | | | | | | | | | | | | | | | | |
11| | | | | | | | | | | | | | | | | | | | | | | | |11
12| | | | | | | | | | | | | | | | | | | | | | | | |12
13| | | | | | | | | | | | | | | | | | | | | | | | |13
14| | | | | | | | | | | | | | | | | | | | | | | | |14
15| | | | | | | | | | | | | | | | | | | | | | | | |15
| | | | | | | | | | | | | | | | | | | | | | | | |
16| | | | | | | | | | | | | | | | | | | | | | | | |16
17| | | | | | | | | | | | | | | | | | | | | | | | |17
18| | | | | | | | | | | | | | | | | | | | | | | | |18
19| | | | | | | | | | | | | | | | | | | | | | | | |19
20| | | | | | | | | | | | | | | | | | | | | | | | |20
| | | | | | | | | | | | | | | | | | | | | | | | |
21| | | | | | | | | | | | | | | | | | | | | | | | |21
22| | | | | | | | | | | | | | | | | | | | | | | | |22
23| | | | | | | | | | | | | | | | | | | | | | | | |23
24| | | | | | | | | | | | | | | | | | | | | | | | |24
25| | | | | | | | | | | | | | | | | | | | | | | | |25
| | | | | | | | | | | | | | | | | | | | | | | | |
26| | | | | | | | | | | | | | | | | | | | | | | | |26
27| | | | | | | | | | | | | | | | | | | | | | | | |27
28| | | | | | | | | | | | | | | | | | | | | | | | |28
29| | | | | | | | | | | | | | | | | | | | | | | | |29
30| | | | | | | | | | | | | | | | | | | | | | | | |30
31| | | | | | | | | | | | | | | | | | | | | | | | |31
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
Sum|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|0.00|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
|
|
