LOCAL CLIMATOLOGICAL DATA Monthly Summary April 1998 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| 78 | 61 | 69.5 | 70.6 | 70| 99| 0| 4|.........| 0| 0.39| 0.0|29.89|29.69|29.801| 3.5| 3.1|191| 26| SW| 10|170| 40 | |02| 80 | 53 | 66.5 | 65.1 | 64| 98| 0| 1|.........| 0| 0.00| 0.0|29.96|29.72|29.811| 3.6| 2.6|305| 24| W| 11|260| 42 | |03| 66 | 37 | 51.5 | 53.3 | 52| 99| 14| 0|.........| 0| 0.00| 0.0|30.00|29.71|29.883| 2.1| 1.0|295| 15|WNW| 10|310| 45 | |04| 53 | 41 | 47.0*| 47.1 | 46| 99| 18| 0|.........| 0| 0.67| 0.0|29.82|29.57|29.671| 3.4| 3.0| 17| 22|NNE| 10| 0| 35 | |05| 59 | 39 | 49.0 | 47.7 | 47| 99| 16| 0|.........| 0| 0.00| 0.0|29.89|29.76|29.822| 5.4| 5.3|333| 25|NNW| 13|310| 46 | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 63 | 31 | 47.0 | 47.8 | 47| 99| 18| 0|.........| 0| 0.00| 0.0|29.91|29.80|29.854| 3.8| 3.7|318| 24|WNW| 12|310| 45 | |07| 68 | 32 | 50.0 | 51.2 | 50| 99| 15| 0|.........| 0| 0.00| 0.0|30.01|29.86|29.926| 2.1| 1.2|127| 14| SE| 9|140| 44 | |08| 78 | 44 | 61.0 | 58.7 | 58| 99| 4| 0|.........| 0| 0.04| 0.0|29.89|29.68|29.783| 1.8| 0.2|330| 18| NW| 10|350| 43 | |09| 56 | 43 | 49.5 | 50.8 | 48| 92| 16| 0|.........| 0| 0.95| 0.0|29.75|29.25|29.514| 3.7| 2.6| 44| 26| NW| 12|270| 34 | |10| 60 | 37 | 48.5 | 48.2 | 46| 95| 17| 0|.........| 0| 0.02| 0.0|29.89|29.46|29.681| 2.1| 1.7|334| 15| NW| 9|320| 45 | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 66 | 30*| 48.0 | 49.1 | 48| 99| 17| 0|.........| 0| 0.00| 0.0|30.12|29.87|30.029| 2.2| 2.0|337| 18| W| 9|310| 46 | |12| 69 | 32 | 50.5 | 51.0 | 50| 99| 15| 0|.........| 0| 0.00| 0.0|30.26|30.10|30.191| 1.7| 1.1| 88| 14| E| 7|100| 46 | |13| 71 | 35 | 53.0 | 54.6 | 54| 99| 12| 0|.........| 0| 0.00| 0.0|30.28|30.05|30.184| 2.0| 1.8|124| 15|ESE| 8|100| 46 | |14| 73 | 50 | 61.5 | 59.6 | 59| 99| 4| 0|.........| 0| 0.02| 0.0|30.07|29.74|29.870| 2.5| 2.3|207| 20| W| 9|250| 44 | |15| 79 | 52 | 65.5 | 65.1 | 64| 98| 0| 0|.........| 0| 0.01| 0.0|29.88|29.74|29.818| 2.7| 2.1|306| 22| NW| 11|320| 45 | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 83*| 56 | 69.5*| 68.8 | 68| 99| 0| 4|.........| 0| 0.00| 0.0|29.87|29.74|29.816| 2.6| 2.1|171| 23|SSW| 10|230| 44 | |17| 82 | 56 | 69.0 | 68.5 | 68| 99| 0| 4|.........| 0| 0.12| 0.0|30.11|29.74|29.844| 3.6| 2.2|232| 22| SE| 10|150| 37 | |18| 67 | 45 | 56.0 | 55.4 | 54| 99| 9| 0|.........| 0| 0.02| 0.0|30.27|30.08|30.217| 2.0| 0.6|301| 13| NW| 7|330| 44 | |19| 55 | 49 | 52.0 | 52.3 | 51| 99| 13| 0|.........| 0| 0.59| 0.0|30.21|29.77|29.995| 2.0| 1.0| 81| 18| E| 9| 90| 34 | |20| 65 | 46 | 55.5 | 54.9 | 52| 94| 10| 0|.........| 0| 0.03| 0.0|30.10|29.78|29.961| 2.8| 2.6|321| 26|WNW| 12|310| 46 | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 70 | 41 | 55.5 | 56.6 | 56| 99| 10| 0|.........| 0| 0.00| 0.0|30.16|30.06|30.110| 1.5| 1.3|132| 12| E| 7| 90| 47 | |22| 68 | 44 | 56.0 | 56.2 | 55| 99| 9| 0|.........| 0| 0.00| 0.0|30.10|29.89|30.025| 2.0| 1.9|110| 20|ESE| 10|100| 48 | |23| 66 | 44 | 55.0 | 55.5 | 54| 99| 10| 0|.........| 0| 0.00| 0.0|29.91|29.71|29.807| 1.4| 0.6|341| 15|WNW| 9|310| 47 | |24| 76 | 49 | 62.5 | 62.7 | 62| 99| 3| 0|.........| 0| 0.00| 0.0|29.85|29.72|29.777| 2.8| 2.7|295| 20| NW| 10|310| 47 | |25| 78 | 57 | 67.5 | 66.2 | 56| 77| 0| 2|.........| 0| 0.00| 0.0|30.00|29.82|29.927| 3.7| 3.6|309| 28|WNW| 12|300| 46 | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 68 | 48 | 58.0 | 59.4 | 55| 86| 7| 0|.........| 0| 0.01| 0.0|30.00|29.72|29.895| 1.9| 1.1| 69| 18| SE| 9|350| 43 | |27| 63 | 42 | 52.5 | 52.1 | 40| 70| 13| 0|.........| 0| 0.10| 0.0|30.23|29.94|30.093| 2.2| 2.2|343| 18|WNW| 9|310| 48 | |28| 65 | 34 | 49.5 | 53.5 | 39| 64| 16| 0|.........| 0| 0.00| 0.0|30.37|30.21|30.303| 2.2| 1.8|341| 17| NW| 8|300| 62 | |29| | | | | | | | | | | | | | | | | | | | | | | | |30| | | | | | | | | | | | | | | | | | | | | | | | +--+-----+-----+------+------+---+----+----+----+---------+--+-----+-----+-----+-----+------+----+----+---+---+---+---+---+----+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | Sum| +-----+-----+------+------+---+----+----+----+ Number of +-----+-----+-----+-----+------+----+----+---+---+---+---+---+----+ | 1925| 1228|------|------|---|----| 266| 15| Days | 2.97| 0.0|30.37|29.25|29.915| 2.6| 0.8|328| 28|WNW| 13|310|1220| +-----+-----+------+------+---+----+----+----+------------+-----+-----+-----+-----+------+----+----+---+---+---+---+---+----+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date| Date|------|----|----|---| Date | Date | Avg| +-----+-----+------+------+---+----+----+----+ +-----+-----+-----+-----+------+----+----+---+-------+-------+----+ | 68.8| 43.9| 56.3 | 56.5 | 54|94.9|----|----|>.01 Inch 13|20.24| 1.9| 28 | 9 |------|----|----|---| 25 | 5 | 44| +-----+-----+------+------+---+----+----+----+------------+-----+-----+-----+-----+------+----+----+---+-------+-------+----+ | | 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 |4181| 58|Thunder 0|Precipitation| Snow, Ice Plts | and Date | +-------+--------+--------+--------+----+----+------------+------+------+--------+-------+-------------+--------------------+ | > 90°F| < 32°F | < 32°F | < 0°F |----|----|Heavy Fog 0| 0.99| 8- 9| 0.0 | - | 0 | - | +-------+--------+--------+--------+----+----+------------+------+------+--------+----+--+-------------+--------------------+ | 0 | 0 | 4 | 0 |----|----|Clear 0 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 April 1998: 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 | +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | APR 1 | APR 2 | APR 3 | | | | | |01| 0|29.89| 0.00| 65| 64| 99|17| 3| 5| 0|29.78| 0.00| 61| 60| 99|11| 0| 2| 0|29.97| 0.00| 49| 48| 99|20| 1| 2| |04| 0|29.87| 0.00| 67| 66| 99|20| 2| 6| 0|29.77| 0.00| 56| 55| 99|18| 1| 1| 0|29.97| 0.00| 41| 40| 99|30| 1| 2| |07| 63|29.86| 0.00| 69| 68| 99|18| 4| 11| 78|29.82| 0.00| 56| 55| 99|32| 1| 1| 81|29.99| 0.00| 40| 39| 99|27| 1| 2| |10| 86|29.84| 0.00| 75| 74| 99|16| 3| 10| 93|29.80| 0.00| 71| 70| 99|25| 6| 13| 94|29.93| 0.00| 59| 58| 99|31| 4| 10| |13| 83|29.77| 0.01| 74| 73| 99|19| 5| 12| 80|29.75| 0.00| 76| 75| 99|28| 7| 14| 89|29.87| 0.00| 65| 64| 99|30| 5| 9| |16| 67|29.72| 0.00| 77| 76| 99|21| 6| 14| 89|29.76| 0.00| 76| 75| 99|35| 5| 12| 89|29.85| 0.00| 63| 62| 99|13| 3| 7| |19| 0|29.72| 0.00| 73| 72| 99|20| 3| 14| 0|29.86| 0.00| 67| 66| 99|35| 4| 10| 0|29.80| 0.00| 57| 56| 99|11| 0| 1| |22| 0|29.77| 0.26| 64| 63| 99|31| 1| 2| 0|29.92| 0.00| 59| 58| 99|00| 4| 8| 0|29.77| 0.00| 48| 47| 99|25| 0| 1| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | APR 4 | APR 5 | APR 6 | | | | | |01| 0|29.69| 0.00| 49| 48| 99|02| 1| 3| 0|29.82| 0.00| 41| 40| 99|01| 6| 12| 0|29.85| 0.00| 39| 38| 99|32| 2| 3| |04| 0|29.65| 0.00| 52| 51| 99|08| 2| 4| 0|29.80| 0.00| 40| 39| 99|33| 2| 9| 0|29.83| 0.00| 36| 35| 99|27| 1| 2| |07| 43|29.59| 0.09| 47| 46| 99|05| 2| 6| 32|29.84| 0.00| 40| 39| 99|34| 6| 12| 39|29.85| 0.00| 32| 31| 99|33| 2| 4| |10| 73|29.61| 0.05| 45| 44| 99|05| 2| 7| 89|29.88| 0.00| 47| 46| 99|34| 4| 14| 95|29.89| 0.00| 51| 50| 99|01| 6| 10| |13| 96|29.63| 0.04| 45| 44| 99|00| 4| 11| 90|29.85| 0.00| 52| 51| 99|35| 6| 12| 80|29.85| 0.00| 57| 56| 99|32| 6| 14| |16| 75|29.66| 0.03| 48| 47| 99|01| 1| 2| 97|29.79| 0.00| 58| 57| 99|31| 7| 15| 95|29.82| 0.00| 61| 60| 99|34| 6| 10| |19| 0|29.73| 0.00| 48| 47| 99|34| 6| 15| 62|29.78| 0.00| 57| 56| 99|34| 5| 15| 61|29.84| 0.00| 61| 60| 99|32| 6| 10| |22| 0|29.80| 0.00| 42| 41| 99|00| 7| 18| 0|29.81| 0.00| 50| 49| 99|29| 4| 7| 0|29.89| 0.00| 45| 44| 99|25| 1| 2| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | APR 7 | APR 8 | APR 9 | | | | | |01| 0|29.90| 0.00| 39| 38| 99|33| 2| 4| 0|29.87| 0.00| 47| 46| 99|27| 0| 0| 0|29.73| 0.00| 56| 55| 99|17| 0| 4| |04| 0|29.91| 0.00| 35| 34| 99|00| 1| 2| 0|29.82| 0.00| 46| 45| 99|00| 0| 1| 0|29.68| 0.00| 56| 55| 99|06| 1| 4| |07| 44|29.96| 0.00| 33| 32| 99|29| 1| 2| 40|29.82| 0.00| 47| 46| 99|00| 1| 1| 18|29.64| 0.00| 52| 51| 99|08| 3| 8| |10| 96|29.99| 0.00| 58| 57| 99|08| 3| 6| 92|29.81| 0.00| 59| 58| 99|17| 2| 4| 90|29.55| 0.05| 49| 48| 99|06| 5| 21| |13| 81|29.96| 0.00| 63| 62| 99|19| 2| 7| 90|29.77| 0.00| 65| 64| 99|00| 2| 6| 43|29.42| 0.06| 50| 49| 99|07| 4| 17| |16| 93|29.89| 0.00| 66| 65| 99|11| 7| 12| 87|29.69| 0.00| 74| 73| 99|21| 3| 6| 47|29.32| 0.43| 50| 49| 99|05| 3| 4| |19| 71|29.89| 0.00| 62| 61| 99|13| 2| 4| 32|29.75| 0.00| 70| 69| 99|08| 2| 2| 57|29.38| 0.00| 49| 44| 84|35| 6| 12| |22| 0|29.91| 0.00| 54| 53| 99|11| 1| 2| 0|29.75| 0.00| 58| 57| 99|18| 2| 2| 0|29.49| 0.00| 45| 40| 84|34| 4| 7| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | APR 10 | APR 11 | APR 12 | | | | | |01| 0|29.48| 0.00| 44| 39| 83|01| 2| 4| 0|29.91| 0.00| 38| 37| 99|00| 1| 2| 0|30.12| 0.00| 39| 38| 99|00| 0| 1| |04| 0|29.53| 0.00| 45| 39| 81|01| 3| 7| 0|29.95| 0.00| 36| 35| 99|24| 1| 2| 0|30.12| 0.00| 35| 34| 99|34| 1| 2| |07| 26|29.61| 0.00| 43| 42| 99|29| 1| 3| 48|30.00| 0.00| 31| 30| 99|02| 0| 0| 53|30.17| 0.00| 33| 32| 99|29| 0| 0| |10| 88|29.69| 0.00| 46| 45| 99|00| 1| 3| 95|30.07| 0.00| 53| 52| 99|00| 3| 9| 92|30.25| 0.00| 57| 56| 99|09| 4| 9| |13| 90|29.73| 0.00| 52| 51| 99|01| 1| 6| 82|30.07| 0.00| 59| 58| 99|33| 5| 7| 82|30.24| 0.00| 64| 63| 99|11| 5| 9| |16| 96|29.72| 0.00| 59| 58| 99|33| 5| 8| 96|30.04| 0.00| 64| 63| 99|32| 7| 11| 91|30.19| 0.00| 67| 66| 99|14| 4| 7| |19| 73|29.76| 0.00| 57| 56| 99|35| 4| 8| 71|30.05| 0.00| 61| 60| 99|31| 4| 8| 67|30.20| 0.00| 63| 62| 99|15| 1| 2| |22| 0|29.84| 0.00| 43| 42| 99|00| 0| 0| 0|30.11| 0.00| 47| 46| 99|21| 1| 1| 0|30.21| 0.00| 48| 47| 99|27| 0| 0| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | APR 13 | APR 14 | APR 15 | | | | | |01| 0|30.24| 0.00| 47| 46| 99|14| 1| 2| 0|30.04| 0.00| 54| 53| 99|23| 1| 2| 0|29.76| 0.00| 55| 54| 99|11| 1| 4| |04| 0|30.21| 0.00| 39| 38| 99|07| 0| 0| 0|29.99| 0.00| 51| 50| 99|14| 1| 1| 0|29.76| 0.00| 55| 54| 99|19| 1| 2| |07| 56|30.24| 0.00| 36| 35| 99|00| 0| 2| 58|29.93| 0.00| 52| 51| 99|28| 1| 2| 54|29.80| 0.00| 53| 52| 99|27| 1| 2| |10| 94|30.26| 0.00| 58| 57| 99|10| 3| 6| 93|29.89| 0.00| 63| 62| 99|18| 5| 14| 91|29.83| 0.00| 69| 68| 99|32| 4| 15| |13| 85|30.20| 0.00| 68| 67| 99|15| 6| 7| 86|29.82| 0.00| 72| 71| 99|17| 4| 12| 82|29.83| 0.00| 73| 72| 99|32| 7| 11| |16| 91|30.14| 0.00| 69| 68| 99|11| 4| 12| 75|29.78| 0.00| 63| 62| 99|24| 4| 9| 92|29.83| 0.00| 78| 77| 99|32| 7| 13| |19| 72|30.12| 0.00| 65| 64| 99|15| 3| 6| 48|29.78| 0.00| 60| 59| 99|23| 2| 7| 65|29.84| 0.00| 74| 73| 99|09| 1| 2| |22| 0|30.11| 0.00| 55| 54| 99|14| 1| 2| 0|29.78| 0.00| 58| 57| 99|17| 1| 2| 0|29.87| 0.00| 62| 61| 99|09| 1| 2| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | APR 16 | APR 17 | APR 18 | | | | | |01| 0|29.85| 0.00| 57| 56| 99|01| 1| 1| 0|29.80| 0.00| 71| 70| 99|20| 2| 7| 0|30.12| 0.00| 55| 54| 99|34| 5| 12| |04| 0|29.85| 0.00| 59| 58| 99|29| 0| 1| 0|29.80| 0.00| 69| 68| 99|18| 4| 11| 0|30.17| 0.00| 48| 47| 99|11| 0| 1| |07| 52|29.86| 0.00| 57| 56| 99|31| 1| 2| 12|29.82| 0.03| 64| 63| 99|20| 2| 5| 46|30.23| 0.00| 46| 45| 99|27| 1| 2| |10| 89|29.84| 0.00| 71| 70| 99|15| 4| 9| 87|29.79| 0.01| 64| 63| 99|25| 2| 7| 92|30.25| 0.00| 55| 54| 99|31| 3| 6| |13| 81|29.80| 0.00| 78| 77| 99|15| 3| 8| 87|29.80| 0.00| 74| 73| 99|24| 7| 14| 88|30.24| 0.00| 61| 60| 99|33| 4| 7| |16| 85|29.77| 0.00| 80| 79| 99|23| 5| 11| 89|29.77| 0.00| 81| 80| 99|27| 3| 10| 87|30.21| 0.00| 64| 63| 99|10| 4| 9| |19| 66|29.79| 0.00| 79| 78| 99|24| 4| 8| 34|29.89| 0.00| 67| 66| 99|09| 1| 2| 59|30.23| 0.00| 58| 57| 99|17| 2| 6| |22| 0|29.80| 0.00| 68| 67| 99|13| 3| 6| 0|30.02| 0.00| 62| 61| 99|34| 5| 13| 0|30.26| 0.00| 56| 55| 99|25| 1| 2| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+MAXIMUM SHORT DURATION PRECIPITATION +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.22 | 0.22 | 0.22 | 0.22 | 0.23 | 0.30 | 0.36 | 0.40 | 0.42 | 0.43 | 0.47 | 0.56 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 19 | 19 | 19 | 19 | 09 | 09 | 09 | 09 | 09 | 09 | 09 | 09 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 0746 | 0746 | 0746 | 0746 | 1607 | 1623 | 1636 | 1651 | 1702 | 1702 | 1623 | 1651 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 1998: 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 | +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | APR 19 | APR 20 | APR 21 | | | | | |01| 0|30.20| 0.00| 54| 53| 99|23| 1| 2| 0|29.82| 0.01| 50| 49| 99|21| 1| 3| 0|30.09| 0.00| 48| 47| 99|19| 0| 1| |04| 0|30.13| 0.00| 54| 53| 99|13| 2| 2| 0|29.82| 0.00| 50| 49| 99|27| 2| 4| 0|30.09| 0.00| 45| 44| 99|02| 0| 0| |07| 24|30.09| 0.00| 52| 51| 99|02| 2| 4| 50|29.87| 0.00| 47| 27| 46|31| 2| 5| 60|30.14| 0.00| 43| 42| 99|02| 0| 0| |10| 81|30.08| 0.00| 53| 52| 99|07| 2| 7| 86|29.97| 0.00| 54| 53| 99|30| 12| 19| 90|30.16| 0.00| 63| 62| 99|35| 2| 6| |13| 86|29.99| 0.00| 52| 51| 99|08| 4| 12| 85|30.00| 0.00| 61| 60| 99|34| 6| 14| 89|30.13| 0.00| 67| 66| 99|15| 4| 9| |16| 72|29.87| 0.00| 52| 51| 99|10| 2| 12| 87|30.01| 0.00| 63| 62| 99|00| 3| 9| 92|30.08| 0.00| 70| 69| 99|15| 4| 10| |19| 28|29.82| 0.06| 51| 50| 99|01| 1| 4| 75|30.06| 0.00| 62| 61| 99|00| 2| 4| 72|30.09| 0.00| 64| 63| 99|16| 2| 5| |22| 0|29.81| 0.04| 50| 49| 99|29| 2| 3| 0|30.09| 0.00| 51| 50| 99|33| 0| 2| 0|30.11| 0.00| 55| 54| 99|20| 0| 1| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | APR 22 | APR 23 | APR 24 | | | | | |01| 0|30.10| 0.00| 49| 48| 99|05| 0| 1| 0|29.90| 0.00| 48| 47| 99|34| 0| 0| 0|29.75| 0.00| 54| 53| 99|24| 1| 6| |04| 0|30.07| 0.00| 46| 45| 99|30| 0| 1| 0|29.84| 0.00| 45| 44| 99|29| 0| 1| 0|29.74| 0.00| 55| 54| 99|29| 2| 4| |07| 61|30.07| 0.00| 45| 44| 99|20| 0| 1| 54|29.85| 0.00| 47| 46| 99|14| 0| 1| 66|29.77| 0.00| 50| 49| 99|28| 1| 2| |10| 93|30.06| 0.00| 62| 61| 99|02| 2| 4| 92|29.85| 0.00| 56| 55| 99|10| 3| 6| 91|29.81| 0.00| 65| 64| 99|31| 4| 6| |13| 87|30.03| 0.00| 67| 66| 99|10| 6| 9| 93|29.80| 0.00| 65| 64| 99|32| 3| 7| 81|29.79| 0.00| 71| 70| 99|24| 6| 13| |16| 89|29.98| 0.00| 66| 65| 99|12| 4| 17| 91|29.75| 0.00| 65| 64| 99|32| 4| 8| 90|29.76| 0.00| 75| 74| 99|32| 6| 17| |19| 76|29.98| 0.00| 61| 60| 99|10| 4| 14| 78|29.73| 0.00| 65| 64| 99|33| 1| 2| 67|29.76| 0.00| 72| 71| 99|26| 1| 6| |22| 0|29.94| 0.00| 52| 51| 99|00| 0| 2| 0|29.77| 0.00| 55| 54| 99|01| 0| 1| 0|29.81| 0.00| 57| 56| 99|02| 1| 2| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | APR 25 | APR 26 | APR 27 | | | | | |01| 0|29.86| 0.00| 64| 63| 99|24| 1| 6| 0|29.99| 0.00| 59| 51| 75|31| 1| 2| 0|29.97| 0.01| 48| 47| 99|28| 1| 3| |04| 0|29.86| 0.00| 62| 61| 99|32| 3| 6| 0|29.95| 0.00| 60| 59| 99|11| 0| 1| 0|29.98| 0.01| 46| 45| 99|03| 0| 2| |07| 54|29.91| 0.00| 59| 58| 99|31| 4| 8| 33|29.95| 0.00| 59| 53| 82|28| 1| 2| 51|30.05| 0.00| 45| 44| 99|01| 1| 4| |10| 93|29.96| 0.00| 66| 65| 99|33| 7| 28| 85|29.92| 0.00| 59| 53| 79|09| 1| 2| 94|30.10| 0.00| 53| 43| 68|02| 2| 8| |13| 80|29.96| 0.00| 71| 70| 99|28| 10| 22| 88|29.86| 0.00| 62| 56| 81|14| 2| 5| 85|30.10| 0.00| 59| 40| 49|33| 4| 12| |16| 91|29.93| 0.00| 76| 38| 26|35| 5| 13| 86|29.76| 0.00| 64| 59| 84|17| 2| 6| 92|30.11| 0.00| 61| 31| 33|35| 3| 7| |19| 66|29.94| 0.00| 73| 40| 31|31| 2| 5| 53|29.78| 0.00| 64| 60| 86|04| 2| 6| 78|30.16| 0.00| 58| 33| 39|00| 2| 4| |22| 0|29.99| 0.00| 61| 46| 57|19| 1| 2| 0|29.93| 0.00| 51| 50| 99|35| 1| 2| 0|30.22| 0.00| 48| 41| 77|03| 0| 1| +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | APR 28 | APR 29 | APR 30 | | | | | |01| 0|30.25| 0.00| 40| 39| 99|25| 0| 1| | | | | | | | | | | | | | | | | | | |04| 0|30.29| 0.00| 38| 37| 99|35| 1| 2| | | | | | | | | | | | | | | | | | | |07| 58|30.31| 0.00| 36| 35| 99|33| 0| 2| | | | | | | | | | | | | | | | | | | |10| 92|30.36| 0.00| 54| 40| 58|31| 4| 9| | | | | | | | | | | | | | | | | | | |13| 82|30.33| 0.00| 60| 39| 45|34| 4| 12| | | | | | | | | | | | | | | | | | | |16| 82|30.29| 0.00| 65| 38| 37|02| 2| 7| | | | | | | | | | | | | | | | | | | |19| | | | | | | | | | | | | | | | | | | | | | | | | | | | |22| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+---+-----+-----+---+---+---+--+---+---+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-----------------------------------------+--------------------------------------+--------------------------------------+ 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|29.920| 50| 49| 97| 1.3| 33 | 0.4| |04| 0|29.909| 48| 47| 98| 1.1| 29 | 0.2| |07| 48|29.930| 46| 45| 96| 1.4| 32 | 0.7| |10| 90|29.944| 58| 56| 95| 3.7| 34 | 1.2| |13| 83|29.914| 63| 61| 94| 4.7| 31 | 1.2| |16| 86|29.875| 66| 61| 91| 4.3| 33 | 0.9| |19| 53|29.879| 62| 59| 93| 2.7| 34 | 1.0| |22| 0|29.918| 53| 51| 96| 1.6| 34 | 0.6| +--+---+------+---+---+---+-----+----+----+HOURLY PRECIPITATION (Water Equivalent) April 1998: 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| | | | | | | | | | | |0.02|0.01| | | | | | | | |0.32|0.04| |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | |0.04|0.08|0.08|0.07|0.05|0.06|0.06|0.04|0.03|0.03|0.13| | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | |0.02|0.02| | | |08 09| | | | | | | |0.07|0.05|0.14|0.01|0.01|0.04|0.09|0.10|0.20|0.22|0.02| | | | | | |09 10| | | | | | |0.01|0.01| | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | |0.02| | | | | | | |14 15| | |0.01| | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | |0.04|0.02|0.01|0.01|0.01|0.01| |0.01| | | |0.01| | | | | | |17 18|0.01| | | | | | | | | | | | | | | | | | | | |0.01| | |18 19| | | | | | | |0.22| | | | | | | | |0.01|0.07|0.12|0.01|0.07|0.05|0.02|0.02|19 20|0.01|0.01| | |0.01| | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | |0.01| | | |26 27|0.02|0.03|0.02|0.02| | |0.01| | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.04|0.04|0.03|0.02|0.01|0.04|0.14|0.40|0.13|0.20|0.08|0.10|0.09|0.13|0.13|0.33|0.25|0.10|0.12|0.03|0.10|0.38|0.06|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.)