LOCAL CLIMATOLOGICAL DATA Monthly Summary December 1999 Station: Millersville 1SE Latitude: 39° 05' 07" N Longitude: 76° 37' 04" W Elevation (ground): 75 feet Time Zone: EASTERN +--+-----------------------------+----+---------+---------+--+-----------+------------------+-----------------------------+----+ | | Temperature | |Deg. Days|Precip Ty| | Precip | Pressure | Wind | Sun| | +-----+-----+------+------+---+ 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| | | | | | +---+---+---+---+ | | | x | n | e | | e | | a | o |4 ice plt| w| | | | | | S | S | | S | | S | | I | | D| i | i | r | M | w | M | t | l |5 hail | | E | S | | | M | p | p | | p | | p | | n | | a| m | m | a | e | | e | i | i |6 glaze | C| q | n | M | M | e | e | e | D | e | D | e | D | d | | t| u | u | g | a | P | a | n | n |7 duststm| v| u | o | a | i | a | e | e | i | e | i | e | i | e | | 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 | x | | | | | | | | | | |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| 38 | 20 | 29.0 | 28.0 | 12| 54| 36| 0|.........| 0| 0.00| 0.0|30.46|30.29|30.381| 5.2| 5.0|348| 24| NW| 12|340| 33 | |02| 52 | 18 | 35.0 | 31.8 | 17| 62| 30| 0|.........| 0| 0.00| 0.0|30.35|30.19|30.280| 1.4| 1.1|290| 12|WNW| 7|290| 32 | |03| 60 | 26 | 43.0 | 40.6 | 30| 68| 22| 0|.........| 0| 0.00| 0.0|30.24|30.12|30.187| 1.0| 0.6|154| 7| W| 4|210| 34 | |04| 67 | 36 | 51.5 | 53.0 | 41| 64| 14| 0|.........| 0| 0.00| 0.0|30.21|30.06|30.150| 2.9| 2.4|281| 24|WNW| 13|300| 31 | |05| 68*| 38 | 53.0*| 50.8 | 42| 76| 12| 0|.........| 0| 0.00| 0.0|30.19|29.93|30.063| 1.9| 1.5|170| 16|SSW| 7|160| 32 | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 58 | 45 | 51.5 | 53.6 | 49| 87| 14| 0|.........| 0| 0.42| 0.0|29.96|29.80|29.873| 3.0| 1.2|313| 25|WNW| 15|310| 28 | |07| 49 | 29 | 39.0 | 42.0 | 32| 67| 26| 0|.........| 0| 0.00| 0.0|30.30|29.94|30.150| 6.8| 6.7|323| 25|WNW| 15|330| 34 | |08| 53 | 24 | 38.5 | 35.2 | 28| 80| 27| 0|.........| 0| 0.00| 0.0|30.41|30.28|30.352| 1.1| 0.7|238| 8| W| 6|250| 32 | |09| 53 | 27 | 40.0 | 39.5 | 34| 83| 25| 0|.........| 0| 0.00| 0.0|30.38|30.11|30.290| 1.3| 1.0|128| 10| S| 7| 90| 34 | |10| 55 | 37 | 46.0 | 47.5 | 42| 86| 19| 0|.........| 0| 0.45| 0.0|30.12|29.73|29.919| 3.4| 1.7|287| 33| NW| 19|320| 30 | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 49 | 33 | 41.0 | 40.8 | 25| 54| 24| 0|.........| 0| 0.00| 0.0|30.16|30.01|30.110| 5.4| 5.3|306| 26|WNW| 14|330| 32 | |12| 55 | 27 | 41.0 | 38.1 | 24| 62| 24| 0|.........| 0| 0.00| 0.0|30.19|30.04|30.111| 1.8| 0.5|282| 12| NW| 7|320| 34 | |13| 46 | 27 | 36.5 | 39.7 | 36| 89| 29| 0|.........| 0| 0.27| 0.0|30.08|29.97|30.027| 1.2| 1.0| 16| 9| N| 6|320| 29 | |14| 48 | 39 | 43.5 | 43.6 | 42| 97| 22| 0|.........| 0| 1.18| 0.0|30.01|29.76|29.896| 2.9| 2.1| 39| 19| E| 9| 80| 26 | |15| 45 | 36 | 40.5 | 40.2 | 39| 98| 25| 0|.........| 0| 0.00| 0.0|30.11|29.89|30.023| 1.8| 0.9|158| 15|ESE| 7| 90| 31 | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 49 | 29 | 39.0 | 41.9 | 30| 68| 26| 0|.........| 0| 0.00| 0.0|30.11|29.85|29.974| 3.6| 3.2|288| 30| NW| 14|290| 31 | |17| 50 | 27 | 38.5 | 36.3 | 23| 62| 27| 0|.........| 0| 0.00| 0.0|30.23|30.07|30.159| 1.9| 1.4|227| 17| SW| 8|230| 32 | |18| 47 | 26 | 36.5 | 35.2 | 28| 78| 29| 0|.........| 0| 0.00| 0.0|30.31|30.13|30.223| 1.8| 1.3| 50| 12|ESE| 6| 80| 32 | |19| 43 | 33 | 38.0 | 39.6 | 33| 77| 27| 0|.........| 0| 0.00| 0.0|30.37|30.26|30.315| 3.1| 3.0| 52| 14| E| 7| 60| 32 | |20| 48 | 38 | 43.0 | 42.5 | 40| 93| 22| 0|.........| 0| 0.34| 0.0|30.30|29.91|30.094| 2.4| 1.5| 18| 18|WNW| 10|310| 28 | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 44 | 34 | 39.0 | 39.4 | 32| 78| 26| 0|.........| 0| 0.02| 0.0|30.23|29.97|30.138| 1.9| 1.4|332| 15| NW| 9|320| 30 | |22| 40 | 22 | 31.0 | 32.1 | 21| 66| 34| 0|...4.....| 0| 0.02| T |30.33|30.15|30.249| 3.2| 3.0|333| 17|WNW| 10|320| 31 | |23| 45 | 19 | 32.0 | 31.0 | 21| 72| 33| 0|.........| 0| 0.00| 0.0|30.31|30.06|30.202| 3.5| 2.4|286| 23|WNW| 13|320| 32 | |24| 29 | 16 | 22.5 | 25.0 | 9| 51| 43| 0|.........| 0| 0.00| 0.0|30.34|30.14|30.217| 3.4| 3.3|341| 17|NNW| 9|320| 34 | |25| 29 | 13*| 21.0*| 21.4 | 10| 65| 44| 0|.........| 0| 0.00| 0.0|30.42|30.15|30.323| 3.2| 2.9|319| 17|WNW| 10|300| 34 | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 42 | 16 | 29.0 | 28.2 | 15| 60| 36| 0|.........| 0| 0.00| 0.0|30.15|29.64|29.816| 4.2| 2.9|278| 30| NW| 15|310| 35 | |27| 34 | 26 | 30.0 | 30.5 | 15| 54| 35| 0|.........| 0| 0.00| 0.0|29.89|29.77|29.838| 5.8| 5.7|314| 31| NW| 14|290| 34 | |28| 29 | 19 | 24.0 | 25.9 | 15| 65| 41| 0|...4.....| 0| 0.00| T |29.88|29.60|29.745| 2.8| 1.4|265| 16| NW| 10|320| 35 | |29| 38 | 25 | 31.5 | 30.1 | 18| 62| 34| 0|.........| 0| 0.00| 0.0|29.93|29.62|29.831| 4.3| 3.4|287| 26| NW| 13|300| 33 | |30| 56 | 29 | 42.5 | 41.9 | 27| 57| 23| 0|.........| 0| 0.00| 0.0|29.95|29.76|29.850| 2.8| 1.7|233| 20| SW| 8|220| 33 | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 48 | 26 | 37.0 | 39.1 | 31| 73| 28| 0|.........| 0| 0.00| 0.0|30.20|29.89|30.037| 1.8| 1.0| 67| 10|ESE| 6| 90| 33 | +--+-----+-----+------+------+---+----+----+----+---------+--+-----+-----+-----+-----+------+----+----+---+---+---+---+---+----+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | Sum| +-----+-----+------+------+---+----+----+----+ Number of +-----+-----+-----+-----+------+----+----+---+---+---+---+---+----+ | 1467| 860|------|------|---|----| 857| 0| Days | 2.70| 0.0|30.46|29.60|30.091| 2.9| 1.5|311| 33| NW| 19|320| 977| +-----+-----+------+------+---+----+----+----+------------+-----+-----+-----+-----+------+----+----+---+---+---+---+---+----+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date| Date|------|----|----|---| Date | Date | Avg| +-----+-----+------+------+---+----+----+----+ +-----+-----+-----+-----+------+----+----+---+-------+-------+----+ | 47.3| 27.7| 37.5 | 37.6 | 28|71.1|----|----|>.01 Inch 7|41.30| 0.0| 1 | 28 |------|----|----|---| 10 | 10 | 32| +-----+-----+------+------+---+----+----+----+------------+-----+-----+-----+-----+------+----+----+---+-------+-------+----+ | | 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 |1768|1039|Thunder 0|Precipitation| Snow, Ice Plts | and Date | +-------+--------+--------+--------+----+----+------------+------+------+--------+-------+-------------+--------------------+ | > 90°F| < 32°F | < 32°F | < 0°F |----|----|Heavy Fog 0| 1.36| 13-14| 0.0 | - | 0 | - | +-------+--------+--------+--------+----+----+------------+------+------+--------+----+--+-------------+--------------------+ | 0 | 3 | 21 | 0 |----|----|Clear 31 Partly Cloudy 0 Cloudy 0| +-------+--------+--------+--------+----+----+----------------------------------------+ NOTES: Units are: Temperature=°F, Wind=mph, Pressure=inches Hg, Precipitation=inches. Data in column 4A are (MAX+MIN) / 2, whereas data in columns 4B, 5, 6, 15, 16, 23 are means via continuous observations for 24 hours. Column 5: Dew point is calculated from temperature and humidity and is continuously averaged for 24 hours. 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: sunshine index is measured via solar cell and its value ranges from 0 (darkest) to 99 (brightest) 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 December 1999: Millersville 1SE +--+---+-----+-----+---+---+---+----------+---+-----+-----+---+---+---+----------+---+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 | +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 1 | DEC 2 | DEC 3 | | | | | |01| 0|30.44| 0.00| 27| 14| 58|35| 9| 15| 0|30.30| 0.00| 20| 15| 83|16| 1| 1| 0|30.19| 0.00| 28| 21| 76|22| 0| 0| |04| 0|30.43| 0.00| 25| 13| 61|35| 6| 10| 0|30.30| 0.00| 19| 15| 87|30| 1| 2| 0|30.16| 0.00| 29| 23| 78|21| 2| 4| |07| 40|30.43| 0.00| 24| 11| 57|35| 6| 9| 38|30.33| 0.00| 18| 15| 91|29| 0| 1| 33|30.20| 0.00| 28| 22| 80|02| 2| 3| |10| 81|30.42| 0.00| 29| 10| 46|00| 8| 19| 82|30.35| 0.00| 34| 19| 55|32| 3| 5| 86|30.23| 0.00| 42| 29| 59|16| 2| 3| |13| 81|30.34| 0.00| 34| 12| 40|00| 7| 17| 78|30.27| 0.00| 48| 16| 29|26| 2| 7| 89|30.17| 0.00| 58| 33| 39|11| 2| 3| |16| 75|30.32| 0.00| 35| 9| 35|35| 7| 14| 73|30.23| 0.00| 49| 13| 24|28| 3| 7| 81|30.18| 0.00| 54| 39| 55|15| 2| 3| |19| 0|30.36| 0.00| 28| 12| 52|30| 2| 2| 0|30.25| 0.00| 35| 17| 49|34| 0| 0| 0|30.20| 0.00| 44| 35| 71|11| 0| 1| |22| 0|30.33| 0.00| 23| 15| 74|25| 1| 2| 0|30.23| 0.00| 30| 21| 69|00| 0| 0| 0|30.17| 0.00| 41| 34| 77|14| 1| 1| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 4 | DEC 5 | DEC 6 | | | | | |01| 0|30.12| 0.00| 37| 30| 78|06| 0| 1| 0|30.17| 0.00| 43| 40| 90|18| 0| 1| 0|29.92| 0.00| 52| 48| 87|17| 4| 6| |04| 0|30.08| 0.00| 49| 34| 56|27| 2| 4| 0|30.16| 0.00| 41| 38| 92|31| 1| 2| 0|29.86| 0.00| 53| 50| 90|13| 1| 3| |07| 26|30.13| 0.00| 50| 34| 54|21| 2| 4| 31|30.14| 0.00| 39| 36| 93|01| 1| 2| 0|29.84| 0.12| 54| 51| 92|12| 1| 4| |10| 80|30.17| 0.00| 58| 38| 47|30| 5| 9| 82|30.13| 0.00| 55| 50| 83|19| 2| 5| 76|29.87| 0.04| 56| 53| 92|33| 4| 6| |13| 80|30.15| 0.00| 66| 49| 52|29| 11| 22| 79|30.03| 0.00| 66| 43| 43|20| 3| 11| 85|29.84| 0.00| 56| 53| 92|10| 1| 3| |16| 72|30.16| 0.00| 65| 49| 54|29| 4| 7| 73|29.98| 0.00| 64| 44| 47|22| 4| 10| 58|29.83| 0.00| 55| 52| 92|17| 1| 2| |19| 0|30.19| 0.00| 52| 45| 76|25| 2| 2| 0|29.96| 0.00| 52| 44| 74|18| 3| 6| 0|29.88| 0.02| 52| 48| 87|30| 3| 4| |22| 0|30.21| 0.00| 46| 42| 87|19| 1| 2| 0|29.96| 0.00| 48| 43| 84|10| 1| 2| 0|29.93| 0.00| 50| 40| 68|33| 8| 15| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 7 | DEC 8 | DEC 9 | | | | | |01| 0|29.97| 0.00| 44| 34| 68|33| 10| 20| 0|30.30| 0.00| 29| 26| 91|33| 1| 2| 0|30.35| 0.00| 28| 26| 95|22| 1| 2| |04| 0|30.02| 0.00| 40| 32| 72|31| 7| 14| 0|30.32| 0.00| 26| 23| 92|07| 0| 1| 0|30.34| 0.00| 29| 27| 96|26| 1| 2| |07| 28|30.08| 0.00| 40| 31| 69|30| 6| 18| 27|30.35| 0.00| 25| 23| 94|28| 1| 2| 28|30.35| 0.00| 28| 26| 96|23| 0| 0| |10| 92|30.17| 0.00| 45| 33| 61|32| 10| 18| 82|30.40| 0.00| 39| 33| 79|27| 2| 4| 91|30.38| 0.00| 40| 38| 94|16| 1| 2| |13| 84|30.16| 0.00| 48| 33| 56|34| 9| 18| 80|30.35| 0.00| 49| 34| 55|18| 2| 6| 81|30.30| 0.00| 51| 40| 64|16| 4| 10| |16| 75|30.20| 0.00| 47| 33| 57|33| 7| 15| 70|30.33| 0.00| 49| 33| 54|20| 2| 4| 72|30.24| 0.00| 50| 39| 64|12| 3| 6| |19| 0|30.25| 0.00| 42| 31| 64|33| 4| 9| 0|30.37| 0.00| 36| 31| 83|20| 0| 1| 0|30.23| 0.00| 45| 39| 80|33| 0| 2| |22| 0|30.30| 0.00| 33| 27| 81|04| 1| 2| 0|30.38| 0.00| 30| 27| 92|31| 0| 1| 0|30.17| 0.00| 45| 40| 84|09| 0| 0| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 10 | DEC 11 | DEC 12 | | | | | |01| 0|30.10| 0.00| 43| 39| 89|09| 1| 1| 0|30.03| 0.00| 41| 25| 53|32| 8| 17| 0|30.11| 0.00| 35| 25| 67|27| 2| 6| |04| 0|30.04| 0.00| 40| 37| 92|16| 0| 0| 0|30.07| 0.00| 39| 26| 59|30| 5| 12| 0|30.10| 0.00| 32| 23| 71|31| 3| 4| |07| 20|29.95| 0.00| 40| 38| 94|01| 1| 2| 21|30.13| 0.00| 35| 26| 71|27| 2| 4| 20|30.14| 0.00| 29| 25| 86|22| 1| 3| |10| 81|29.91| 0.00| 55| 50| 83|20| 4| 7| 80|30.16| 0.00| 42| 26| 53|30| 6| 15| 90|30.18| 0.00| 40| 28| 61|25| 2| 4| |13| 80|29.80| 0.13| 52| 49| 92|19| 4| 9| 79|30.11| 0.00| 47| 25| 43|28| 7| 19| 88|30.10| 0.00| 51| 22| 33|19| 2| 4| |16| 65|29.77| 0.00| 55| 52| 93|21| 4| 11| 69|30.10| 0.00| 47| 24| 41|32| 11| 18| 76|30.06| 0.00| 50| 26| 40|09| 4| 7| |19| 0|29.80| 0.00| 54| 51| 93|30| 3| 7| 0|30.13| 0.00| 42| 23| 47|31| 5| 7| 0|30.10| 0.00| 39| 26| 60|02| 0| 0| |22| 0|29.97| 0.00| 44| 25| 48|33| 12| 22| 0|30.14| 0.00| 35| 24| 64|27| 3| 6| 0|30.09| 0.00| 30| 23| 77|02| 1| 1| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 13 | DEC 14 | DEC 15 | | | | | |01| 0|30.07| 0.00| 28| 24| 87|00| 1| 1| 0|30.00| 0.01| 44| 42| 96|02| 1| 3| 0|29.99| 0.00| 38| 36| 97|30| 4| 7| |04| 0|30.02| 0.00| 33| 29| 87|02| 1| 2| 0|29.94| 0.01| 42| 40| 97|05| 2| 6| 0|30.02| 0.00| 38| 37| 98|29| 1| 4| |07| 10|30.03| 0.00| 35| 31| 86|05| 1| 2| 0|29.90| 0.12| 43| 41| 97|06| 4| 15| 3|30.05| 0.00| 37| 36| 99|19| 1| 2| |10| 80|30.06| 0.00| 43| 37| 81|20| 0| 1| 80|29.85| 0.09| 44| 42| 97|07| 4| 8| 87|30.11| 0.00| 38| 37| 98|13| 0| 2| |13| 75|30.01| 0.05| 44| 40| 88|34| 0| 2| 91|29.79| 0.03| 48| 46| 97|03| 1| 4| 89|30.07| 0.00| 40| 39| 99|19| 2| 5| |16| 63|29.99| 0.02| 45| 42| 91|09| 1| 3| 51|29.83| 0.00| 45| 43| 96|01| 4| 6| 64|30.00| 0.00| 41| 40| 99|13| 4| 8| |19| 0|30.00| 0.02| 44| 40| 88|02| 1| 4| 0|29.91| 0.00| 44| 42| 97|33| 4| 8| 0|30.01| 0.00| 43| 42| 98|12| 0| 0| |22| 0|30.04| 0.01| 44| 42| 96|02| 3| 8| 0|29.97| 0.00| 42| 40| 97|32| 2| 6| 0|29.96| 0.00| 45| 43| 97|16| 1| 2| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 16 | DEC 17 | DEC 18 | | | | | |01| 0|29.87| 0.00| 46| 44| 97|25| 2| 4| | | | | | | | | | 0|30.15| 0.00| 29| 26| 93|12| 1| 1| |04| 0|29.90| 0.00| 41| 39| 97|22| 1| 1| 0|30.14| 0.00| 34| 19| 55|23| 2| 3| 0|30.15| 0.00| 28| 26| 95|03| 1| 2| |07| 0|29.92| 0.00| 40| 38| 97|12| 0| 0| 4|30.17| 0.00| 28| 21| 75|18| 1| 2| 0|30.20| 0.00| 27| 25| 95|18| 5| 6| |10| 83|29.99| 0.00| 46| 29| 52|30| 9| 19| 75|30.23| 0.00| 38| 23| 55|21| 2| 6| 81|30.27| 0.00| 41| 35| 79|07| 3| 8| |13| 79|29.94| 0.00| 48| 25| 40|32| 10| 18| 78|30.14| 0.00| 46| 21| 37|21| 7| 13| 80|30.22| 0.00| 46| 29| 52|08| 2| 7| |16| 68|29.97| 0.00| 46| 23| 40|32| 6| 12| 72|30.14| 0.00| 47| 25| 42|19| 2| 5| 73|30.22| 0.00| 46| 28| 50|08| 2| 5| |19| 0|30.06| 0.00| 40| 20| 45|30| 2| 4| 0|30.16| 0.00| 35| 26| 69|11| 1| 2| 0|30.25| 0.00| 36| 29| 75|07| 0| 2| |22| 0|30.10| 0.00| 29| 22| 77|28| 2| 3| 0|30.16| 0.00| 32| 28| 86|00| 1| 2| 0|30.31| 0.00| 32| 28| 86|03| 1| 1| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+MAXIMUM SHORT DURATION PRECIPITATION +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.32 | 0.33 | 0.34 | 0.35 | 0.38 | 0.42 | 0.44 | 0.49 | 0.57 | 0.58 | 0.60 | 0.69 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 0617 | 0620 | 0625 | 0631 | 0641 | 0656 | 0706 | 0731 | 0751 | 0757 | 0841 | 0913 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 December 1999: Millersville 1SE +--+---+-----+-----+---+---+---+----------+---+-----+-----+---+---+---+----------+---+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 | +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 19 | DEC 20 | DEC 21 | | | | | |01| 0|30.29| 0.00| 34| 31| 90|02| 2| 3| 0|30.28| 0.00| 39| 35| 88|05| 2| 6| 0|30.00| 0.00| 44| 42| 96|29| 1| 3| |04| 0|30.28| 0.00| 38| 31| 78|05| 4| 9| 0|30.23| 0.00| 39| 36| 90|07| 3| 5| 0|30.04| 0.00| 41| 39| 97|32| 1| 2| |07| 0|30.33| 0.00| 39| 31| 74|07| 4| 14| 0|30.18| 0.01| 39| 36| 93|03| 4| 8| 0|30.11| 0.00| 40| 38| 96|12| 0| 1| |10| 86|30.36| 0.00| 38| 31| 75|03| 5| 9| 75|30.17| 0.02| 42| 40| 94|03| 2| 3| 90|30.17| 0.00| 41| 32| 70|33| 4| 11| |13| 91|30.31| 0.00| 41| 32| 70|03| 4| 9| 83|30.03| 0.03| 44| 42| 94|06| 3| 6| 87|30.18| 0.00| 41| 23| 48|33| 6| 10| |16| 70|30.31| 0.00| 42| 33| 71|07| 4| 8| 63|29.96| 0.00| 47| 45| 94|00| 1| 2| 51|30.15| 0.00| 38| 28| 67|09| 0| 1| |19| 0|30.33| 0.00| 43| 36| 76|07| 4| 6| 0|29.98| 0.00| 43| 41| 95|30| 7| 15| 0|30.20| 0.00| 36| 32| 88|08| 1| 2| |22| 0|30.32| 0.00| 41| 35| 79|04| 2| 7| 0|30.00| 0.00| 44| 42| 96|23| 2| 2| 0|30.20| 0.00| 36| 26| 67|04| 2| 3| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 22 | DEC 23 | DEC 24 | | | | | |01| 0|30.19| 0.00| 35| 23| 62|03| 2| 4| 0|30.29| 0.00| 21| 17| 88|00| 1| 2| 0|30.18| 0.00| 28| 12| 52|31| 6| 12| |04| 0|30.20| 0.00| 31| 25| 79|32| 4| 7| 0|30.28| 0.00| 20| 18| 94|00| 2| 3| 0|30.17| 0.00| 25| 8| 49|00| 4| 7| |07| 0|30.22| 0.00| 31| 26| 84|35| 2| 3| 0|30.26| 0.00| 19| 17| 95|33| 1| 1| 0|30.19| 0.00| 24| 10| 55|33| 2| 3| |10| 87|30.28| 0.00| 33| 23| 67|30| 6| 11| 81|30.27| 0.00| 34| 30| 87|24| 5| 13| 92|30.22| 0.00| 26| 7| 46|35| 6| 10| |13| 82|30.23| 0.00| 38| 18| 45|32| 4| 10| 85|30.13| 0.00| 42| 30| 62|31| 3| 10| 93|30.17| 0.00| 28| 9| 46|34| 6| 11| |16| 75|30.24| 0.00| 37| 14| 40|31| 6| 9| 73|30.08| 0.00| 43| 27| 52|24| 4| 6| 77|30.17| 0.00| 27| 8| 46|33| 7| 14| |19| 0|30.30| 0.00| 28| 17| 64|21| 0| 1| 0|30.14| 0.00| 39| 19| 45|31| 6| 16| 0|30.27| 0.00| 24| 7| 50|00| 4| 10| |22| 0|30.32| 0.00| 24| 19| 82|20| 1| 1| 0|30.17| 0.00| 32| 15| 49|33| 9| 21| 0|30.33| 0.00| 19| 8| 62|35| 2| 5| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 25 | DEC 26 | DEC 27 | | | | | |01| 0|30.34| 0.00| 17| 7| 67|30| 3| 6| 0|30.11| 0.00| 18| 12| 79|21| 2| 5| 0|29.79| 0.00| 31| 16| 53|30| 6| 14| |04| 0|30.34| 0.00| 13| 8| 81|32| 3| 6| 0|29.97| 0.00| 20| 12| 73|19| 2| 5| 0|29.80| 0.00| 29| 17| 61|25| 4| 12| |07| 3|30.37| 0.00| 16| 8| 72|34| 2| 7| 3|29.83| 0.00| 21| 12| 69|21| 4| 9| 0|29.85| 0.00| 30| 16| 57|27| 8| 19| |10| 85|30.42| 0.00| 23| 11| 60|32| 6| 11| 92|29.75| 0.00| 23| 10| 59|18| 4| 7| 84|29.89| 0.00| 31| 14| 50|32| 4| 17| |13| 90|30.35| 0.00| 28| 13| 53|34| 7| 12| 92|29.67| 0.00| 33| 16| 49|26| 6| 14| 95|29.82| 0.00| 33| 12| 43|31| 7| 15| |16| 78|30.30| 0.00| 28| 10| 48|33| 4| 13| 71|29.69| 0.00| 41| 21| 45|33| 6| 15| 85|29.82| 0.00| 33| 15| 48|35| 4| 12| |19| 0|30.30| 0.00| 23| 11| 60|32| 1| 4| 0|29.78| 0.00| 34| 19| 54|25| 2| 13| 0|29.84| 0.00| 31| 15| 52|32| 4| 9| |22| 0|30.22| 0.00| 22| 13| 69|18| 1| 3| 0|29.79| 0.00| 32| 22| 66|33| 5| 16| 0|29.89| 0.00| 29| 15| 57|27| 5| 14| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 28 | DEC 29 | DEC 30 | | | | | |01| 0|29.85| 0.00| 28| 14| 57|33| 6| 14| 0|29.63| 0.00| 28| 25| 91|26| 2| 4| 0|29.81| 0.00| 32| 20| 61|19| 4| 8| |04| 0|29.84| 0.00| 27| 13| 57|30| 4| 9| 0|29.70| 0.00| 27| 18| 68|30| 6| 14| 0|29.77| 0.00| 37| 23| 57|19| 4| 14| |07| 0|29.85| 0.00| 21| 14| 76|27| 1| 4| 0|29.78| 0.00| 26| 16| 66|29| 6| 14| 0|29.81| 0.00| 32| 23| 69|20| 2| 7| |10| 94|29.86| 0.00| 26| 13| 59|29| 3| 9| 83|29.91| 0.00| 30| 16| 56|33| 9| 21| 79|29.86| 0.00| 44| 26| 49|28| 3| 9| |13| 95|29.69| 0.00| 28| 12| 52|18| 4| 10| 82|29.90| 0.00| 35| 14| 43|29| 6| 14| 90|29.83| 0.00| 55| 30| 39|34| 3| 10| |16| 79|29.64| 0.00| 28| 15| 58|18| 3| 7| 75|29.89| 0.00| 37| 17| 44|26| 2| 10| 77|29.85| 0.00| 53| 31| 43|32| 2| 7| |19| 0|29.64| 0.00| 27| 16| 64|23| 2| 11| 0|29.92| 0.00| 27| 16| 65|18| 1| 2| 0|29.92| 0.00| 42| 30| 63|00| 1| 5| |22| 0|29.64| 0.00| 25| 21| 89|28| 1| 4| 0|29.88| 0.00| 30| 19| 63|18| 3| 6| 0|29.94| 0.00| 41| 32| 71|25| 1| 2| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | DEC 31 | | | | | | | |01| 0|29.93| 0.00| 40| 32| 73|32| 1| 2| | | |04| 0|29.91| 0.00| 40| 32| 73|00| 1| 3| | | |07| 0|29.95| 0.00| 40| 32| 73|01| 1| 5| | | |10| 89|30.05| 0.00| 44| 33| 65|05| 3| 7| | | |13| 85|30.03| 0.00| 43| 29| 57|07| 2| 7| | | |16| 77|30.05| 0.00| 46| 33| 60|12| 2| 6| | | |19| 0|30.14| 0.00| 35| 29| 80|03| 1| 3| | | |22| 0|30.19| 0.00| 28| 25| 90|21| 1| 2| | | +--+---+-----+-----+---+---+---+--+---+---+--------------------------------------+--------------------------------------+ WEATHER NOTES SUMMARY BY HOURS Percent Sunshine: Values range from 0 to 99 - indicates solar intensity. +--+----------------------------+---------+ 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 five 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|30.092| 33| 26| 78| 2.8| 32 | 1.7| |04| 0|30.083| 33| 26| 78| 2.5| 31 | 1.4| |07| 10|30.099| 32| 26| 80| 2.3| 31 | 0.8| |10| 84|30.132| 39| 28| 68| 4.1| 32 | 2.4| |13| 84|30.069| 44| 28| 56| 4.4| 31 | 2.1| |16| 71|30.055| 44| 29| 57| 3.7| 32 | 1.5| |19| 0|30.093| 38| 28| 69| 2.1| 31 | 1.3| |22| 0|30.107| 34| 27| 76| 2.4| 32 | 1.4| +--+---+------+---+---+---+-----+----+----+HOURLY PRECIPITATION (Water Equivalent) December 1999: Millersville 1SE ---+-----------------------------------------------------------+-----------------------------------------------------------+--- | | | 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| | |0.02| |0.08|0.08|0.05|0.08|0.03|0.05|0.01| | | | | | | |0.02| | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | |0.03|0.11|0.14|0.11|0.06| | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | |0.01|0.01|0.05|0.01|0.01|0.03|0.02|0.03|0.02|0.01|0.02|0.02|0.02|0.01|13 14|0.02|0.01|0.02|0.01|0.01|0.01|0.42|0.16|0.08|0.07|0.18|0.02|0.15| |0.01| | | | | | | | |0.01|14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | |0.01| | |0.03|0.01| |0.01|0.02|0.01|0.05|0.06|0.03|0.05| |0.03|0.01| |0.01| |0.01| | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | |0.01| |0.01| | | | | | |21 22|0.01|0.01| | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 31| | | | | | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.03|0.02|0.05|0.01|0.09|0.12|0.48|0.24|0.12|0.14|0.24|0.19|0.40|0.15|0.13|0.04|0.05|0.05|0.04|0.02|0.02|0.03|0.02|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.)