LOCAL CLIMATOLOGICAL DATA
Monthly Summary
December 2008
Station: Round Rock
Latitude: 30° 32' 55" N Longitude: 97° 37' 34" W Elevation (ground): 709 feet Time Zone: Central
+--+-------------------------------+----+---------+---------+--+-----------+--------------------+-----------------------------+------+
| | 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| 60.5 | 33.4 | 47.0 | 49.6 | 22| 36| 18| 0|.........| 0| 0.00| 0.0| 30.28| 29.97|30.162| 3.6| 3.5|318| 26| NW| 15|326| 150 |
|02| 74.9 | 32.1 | 53.5 | 54.5 | 30| 43| 11| 0|.........| 0| 0.00| 0.0| 30.27| 29.93|30.110| 2.3| 2.3|229| 20|SSW| 10|224| 149 |
|03| 80.3 | 43.8 | 62.1 | 63.8 | 49| 62| 3| 0|.........| 0| 0.00| 0.0| 30.22| 29.83|29.950| 4.3| 2.2|243| 25|NNW| 10|348| 122 |
|04| 53.9 | 33.8 | 43.8 | 43.1 | 18| 38| 21| 0|.........| 0| 0.00| 0.0| 30.43| 30.21|30.341| 2.7| 2.6| 51| 16|ENE| 7| 29| 151 |
|05| 50.8 | 29.8 | 40.3 | 39.7 | 17| 42| 24| 0|.........| 0| 0.00| 0.0| 30.52| 30.24|30.381| 0.8| 0.8| 55| 12|NNE| 5| 47| 121 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|06| 68.9 | 27.0*| 48.0 | 46.1 | 23| 46| 17| 0|.........| 0| 0.00| 0.0| 30.25| 30.13|30.197| 0.2| 0.2|275| 9| NW| 4|266| 144 |
|07| 72.3 | 32.4 | 52.4 | 52.4 | 30| 49| 13| 0|.........| 0| 0.00| 0.0| 30.30| 30.05|30.185| 0.7| 0.7|239| 13| SW| 4|237| 142 |
|08| 74.4 | 50.1 | 62.3 | 63.5 | 57| 80| 3| 0|.........| 0| 0.00| 0.0| 30.06| 29.62|29.822| 2.4| 2.4|242| 21|WSW| 8|219| 65 |
|09| 81.8*| 33.4 | 57.6 | 60.2 | 51| 74| 7| 0|.........| 0| 0.16| T | 30.21| 29.62|29.788| 2.9| 1.9| 1| 27|WNW| 11|334| 82 |
|10| 48.5 | 32.9 | 40.7 | 37.9 | 22| 55| 24| 0|.........| 1| 0.08| T | 30.29| 30.12|30.203| 4.8| 4.7|336| 26| NW| 14|327| 100 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|11| 63.7 | 29.8 | 46.8 | 45.0 | 22| 42| 18| 0|.........| 0| 0.00| 0.0| 30.25| 30.08|30.176| 1.8| 1.4|344| 17|NNW| 8|331| 159 |
|12| 70.8 | 30.0 | 50.4 | 48.8 | 26| 47| 14| 0|.........| 0| 0.00| 0.0| 30.37| 30.15|30.258| 0.2| 0.1|226| 11| W| 2| 92| 142 |
|13| 72.3 | 42.8 | 57.6 | 57.2 | 46| 70| 7| 0|.........| 0| 0.00| 0.0| 30.15| 29.78|29.931| 2.3| 2.3|237| 21| SW| 10|225| 86 |
|14| 79.4 | 60.9 | 70.2 | 67.7 | 59| 75| 0| 5|.........| 0| 0.00| 0.0| 29.90| 29.72|29.783| 2.9| 2.9|232| 18| SE| 9|219| 94 |
|15| 67.4 | 29.4 | 48.4 | 36.6 | 24| 62| 17| 0|.........| 0| 0.02| 0.0| 30.41| 29.90|30.260| 3.6| 3.2| 54| 18| NE| 10| 46| 19 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|16| 36.2 | 27.3 | 31.8 | 31.8 | 27| 84| 33| 0|.........| 0| 0.00| 0.0| 30.38| 30.12|30.234| 0.7| 0.7| 39| 11|NNW| 5| 48| 31 |
|17| 48.2 | 36.2 | 42.2 | 43.1 | 40| 89| 23| 0|1........| 0| 0.00| 0.0| 30.20| 30.12|30.158| 0.1| 0.1| 89| 5|NNE| 2| 72| 33 |
|18| 67.3 | 48.0 | 57.7 | 58.1 | 57| 97| 7| 0|.2.......| 0| 0.10| 0.0| 30.17| 29.98|30.077| 0.4| 0.4|223| 12| SW| 5|218| 30 |
|19| 78.5 | 59.9 | 69.2 | 67.8 | 62| 83| 0| 5|12.......| 0| 0.00| 0.0| 30.12| 29.99|30.041| 0.5| 0.3|249| 10|WSW| 4|325| 75 |
|20| 81.2 | 50.4 | 65.8 | 67.9 | 56| 69| 0| 1|.........| 0| 0.00| 0.0| 30.09| 29.87|29.950| 2.0| 0.3|210| 16|NNE| 6| 52| 71 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|21| 50.4 | 33.1 | 41.8 | 38.1 | 16| 41| 23| 0|.........| 0| 0.00| 0.0| 30.57| 30.08|30.374| 5.1| 5.1| 59| 19|ENE| 11| 60| 59 |
|22| 35.8 | 27.3 | 31.5*| 31.9 | 10| 40| 33| 0|.........| 0| 0.00| 0.0| 30.57| 30.21|30.429| 1.7| 1.7| 69| 15|NNE| 6| 54| 50 |
|23| 49.2 | 33.1 | 41.2 | 40.9 | 38| 90| 24| 0|.........| 0| 0.04| 0.0| 30.21| 29.87|29.987| 1.0| 0.8|227| 12| SW| 5|248| 37 |
|24| 73.0 | 45.7 | 59.3 | 57.3 | 39| 60| 5| 0|1........| 0| 0.01| 0.0| 30.21| 29.88|30.079| 1.5| 0.9| 52| 14| NW| 9|329| 140 |
|25| 71.1 | 41.9 | 56.5 | 56.2 | 46| 70| 8| 0|.........| 0| 0.00| 0.0| 30.20| 29.97|30.093| 0.5| 0.3|246| 13|WSW| 4|232| 72 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|26| 79.4 | 67.8 | 73.6*| 72.9 | 66| 81| 0| 9|.........| 0| 0.00| 0.0| 29.97| 29.78|29.859| 3.2| 3.1|243| 21| SW| 8|234| 75 |
|27| 74.6 | 42.9 | 58.8 | 64.4 | 41| 50| 6| 0|.........| 0| 0.20| 0.0| 30.21| 29.71|29.922| 4.9| 4.0|286| 26| N| 16|315| 102 |
|28| 55.0 | 34.6 | 44.8 | 43.9 | 25| 49| 20| 0|.........| 0| 0.00| 0.0| 30.37| 30.21|30.286| 0.1| 0.1| 40| 6|NNE| 2|317| 67 |
|29| 73.3 | 29.3 | 51.3 | 48.6 | 25| 49| 14| 0|.........| 0| 0.00| 0.0| 30.40| 30.27|30.325| 0.1| 0.1|231| 9|WSW| 2|292| 151 |
|30| 76.3 | 35.5 | 55.9 | 54.9 | 31| 44| 9| 0|.........| 0| 0.00| 0.0| 30.27| 30.01|30.117| 1.0| 1.0|228| 13| SW| 6|223| 139 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|31| 61.2 | 41.9 | 51.6 | 51.2 | 30| 46| 13| 0|.........| 0| 0.00| 0.0| 30.32| 30.07|30.217| 2.0| 2.0| 60| 16|NNE| 8| 43| 143 |
+--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- |
+------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+
|2030.6|1196.5|------|------|---|----| 415| 20| Days | 0.61| T | 30.57| 29.62|30.119| 2.0| 0.5|305| 27|WNW| 16|315| ---- |
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg |
+------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+
| 65.5| 38.6| 52.1 | 51.5 | 36|60.0|----|----|>.01 Inch 7|18.65| T | 22 | 9 |------|----|----|---| 9 | 27 | 97|
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+
| | 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 | 594|3361|Thunder 0|Precipitation | Snow, Ice Plts | and Date |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+
| >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 2| 0.24| 9-10| T | 9+ | 1 | 10 |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+
| 0 | 0 | 10 | 0 |----|----| Clear 18 Partly Cloudy 4 Cloudy 9 |
+--------+---------+--------+--------+----+----+------------------------------------------+
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: Sunshine index 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
December 2008: Round Rock
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+
| | | | | | | | | | | | | | | | | | | | | | |
| | | | | 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|30.00| 0.00| 50| 34| 54|28| 3| 6| 0|30.25| 0.00| 33| 21| 63|00| 0| 0| 0|29.91| 0.00| 61| 55| 82|22| 3| 15|
|04| 0|30.04| 0.00| 50| 27| 42|32| 9| 16| 0|30.23| 0.00| 34| 22| 61|23| 0| 2| 0|29.88| 0.00| 63| 58| 83|22| 4| 11|
|07| 0|30.12| 0.00| 47| 24| 40|31| 2| 9| 0|30.21| 0.00| 40| 21| 47|22| 1| 5| 0|29.87| 0.00| 61| 58| 88|22| 4| 13|
|10| 378|30.18| 0.00| 55| 22| 28|31| 6| 12| 418|30.21| 0.00| 57| 29| 34|22| 3| 13| 490|29.93| 0.00| 70| 59| 68|23| 6| 16|
|13| 610|30.18| 0.00| 60| 19| 20|31| 12| 22| 531|30.08| 0.00| 70| 34| 26|21| 4| 15| 364|29.84| 0.00| 77| 57| 50|23| 5| 16|
|16| 276|30.19| 0.00| 57| 14| 18|33| 9| 19| 47|30.01| 0.00| 73| 32| 22|23| 3| 12| 118|29.84| 0.00| 77| 55| 46|25| 1| 10|
|19| 0|30.27| 0.00| 46| 15| 28|00| 0| 0| 0|29.98| 0.00| 65| 31| 28|24| 1| 5| 0|30.07| 0.00| 58| 32| 38|31| 5| 18|
|22| 0|30.27| 0.00| 37| 19| 48|00| 0| 0| 0|29.97| 0.00| 61| 49| 66|22| 2| 12| 0|30.19| 0.00| 48| 29| 49|07| 1| 16|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 4 | DEC 5 | DEC 6 |
| | | |
|01| 0|30.22| 0.00| 42| 26| 53|06| 4| 12| 0|30.43| 0.00| 37| 17| 45|04| 1| 4| 0|30.20| 0.00| 31| 20| 64|05| 0| 0|
|04| 0|30.24| 0.00| 38| 22| 52|01| 3| 13| 0|30.45| 0.00| 32| 18| 55|02| 0| 2| 0|30.17| 0.00| 28| 19| 69|05| 0| 0|
|07| 0|30.34| 0.00| 34| 17| 49|03| 3| 9| 0|30.50| 0.00| 30| 18| 61|03| 0| 3| 0|30.21| 0.00| 28| 20| 73|05| 0| 0|
|10| 417|30.39| 0.00| 44| 20| 38|05| 5| 13| 401|30.50| 0.00| 43| 19| 38|06| 2| 7| 399|30.23| 0.00| 53| 26| 35|25| 2| 6|
|13| 613|30.35| 0.00| 53| 16| 23|05| 4| 7| 399|30.37| 0.00| 49| 16| 26|03| 1| 6| 591|30.16| 0.00| 66| 26| 22|26| 1| 5|
|16| 40|30.32| 0.00| 52| 16| 24|05| 2| 9| 109|30.30| 0.00| 50| 14| 23|03| 1| 5| 35|30.14| 0.00| 66| 26| 22|21| 0| 2|
|19| 0|30.38| 0.00| 44| 15| 31|05| 1| 4| 0|30.27| 0.00| 44| 15| 31|05| 0| 1| 0|30.20| 0.00| 55| 23| 29|27| 0| 0|
|22| 0|30.43| 0.00| 39| 16| 38|05| 1| 3| 0|30.27| 0.00| 36| 17| 46|05| 0| 0| 0|30.25| 0.00| 44| 24| 45|27| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 7 | DEC 8 | DEC 9 |
| | | |
|01| 0|30.24| 0.00| 40| 24| 53|27| 0| 0| 0|30.04| 0.00| 53| 48| 85|24| 1| 4| 0|29.67| 0.00| 70| 63| 78|23| 3| 11|
|04| 0|30.25| 0.00| 35| 25| 67|27| 0| 0| 0|29.97| 0.00| 51| 48| 89|18| 0| 1| 0|29.67| 0.00| 67| 64| 90|21| 0| 3|
|07| 0|30.26| 0.00| 33| 25| 75|27| 0| 0| 0|29.94| 0.00| 54| 52| 94|23| 1| 5| 0|29.66| 0.00| 65| 63| 92|21| 0| 0|
|10| 396|30.29| 0.00| 61| 31| 32|25| 0| 3| 199|29.92| 0.00| 65| 57| 76|22| 3| 7| 211|29.69| 0.00| 74| 66| 78|22| 1| 5|
|13| 585|30.18| 0.00| 70| 28| 21|24| 2| 8| 128|29.79| 0.00| 70| 60| 71|23| 3| 13| 188|29.67| 0.00| 74| 54| 50|05| 5| 14|
|16| 39|30.12| 0.00| 69| 28| 22|24| 2| 7| 72|29.69| 0.00| 72| 61| 68|24| 1| 10| 91|29.79| 0.00| 60| 39| 45|02| 5| 17|
|19| 0|30.11| 0.00| 58| 33| 38|18| 0| 0| 0|29.65| 0.00| 70| 63| 77|26| 5| 11| 0|30.00| 0.00| 44| 30| 59|05| 3| 13|
|22| 0|30.07| 0.00| 55| 46| 71|22| 2| 10| 0|29.67| 0.00| 70| 65| 83|24| 2| 13| 0|30.08| 0.00| 33| 30| 87|05| 5| 11|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 10 | DEC 11 | DEC 12 |
| | | |
|01| 0|30.15| 0.00| 34| 30| 85|35| 1| 11| 0|30.19| 0.00| 34| 18| 51|31| 3| 10| 0|30.25| 0.00| 36| 26| 68|26| 0| 3|
|04| 0|30.20| 0.00| 35| 27| 72|34| 8| 16| | | | | | | | | | 0|30.27| 0.00| 33| 25| 71|26| 0| 0|
|07| 0|30.23| 0.00| 34| 23| 64|31| 5| 19| 0|30.19| 0.00| 30| 18| 60|31| 1| 4| 0|30.31| 0.00| 31| 24| 77|26| 0| 0|
|10| 374|30.28| 0.00| 36| 22| 57|34| 8| 19| 397|30.20| 0.00| 49| 19| 30|31| 6| 12| 396|30.36| 0.00| 54| 34| 47|26| 0| 0|
|13| 366|30.19| 0.00| 42| 23| 47|34| 4| 19| 598|30.11| 0.00| 60| 21| 22|05| 3| 10| 585|30.28| 0.00| 66| 29| 25|28| 0| 5|
|16| 44|30.15| 0.00| 47| 23| 38|01| 4| 12| 44|30.10| 0.00| 63| 26| 24|05| 4| 10| 37|30.22| 0.00| 66| 25| 21|25| 1| 5|
|19| 0|30.19| 0.00| 40| 17| 38|32| 1| 5| 0|30.18| 0.00| 49| 24| 38|09| 0| 0| 0|30.22| 0.00| 54| 23| 30|23| 0| 2|
|22| 0|30.22| 0.00| 35| 18| 50|31| 2| 5| 0|30.24| 0.00| 39| 25| 58|09| 0| 0| 0|30.19| 0.00| 49| 27| 42|24| 0| 3|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 13 | DEC 14 | DEC 15 |
| | | |
|01| 0|30.12| 0.00| 43| 33| 68|22| 0| 1| 0|29.77| 0.00| 62| 55| 79|22| 4| 15| 0|29.90| 0.00| 67| 64| 88|24| 2| 12|
|04| 0|30.05| 0.00| 44| 40| 86|20| 1| 4| 0|29.74| 0.00| 61| 57| 87|22| 4| 13| 0|30.11| 0.00| 38| 29| 70|06| 5| 13|
|07| 0|30.03| 0.00| 45| 42| 90|00| 0| 0| 0|29.77| 0.00| 62| 58| 88|24| 3| 11| 0|30.25| 0.00| 34| 24| 67|06| 4| 11|
|10| 200|30.00| 0.00| 55| 48| 78|22| 2| 7| 97|29.81| 0.00| 66| 60| 81|22| 4| 11| 62|30.32| 0.00| 33| 19| 57|04| 4| 15|
|13| 707|29.87| 0.00| 69| 47| 45|24| 7| 16| 613|29.74| 0.00| 77| 60| 56|22| 4| 17| 53|30.31| 0.00| 33| 16| 48|03| 3| 11|
|16| 111|29.81| 0.00| 71| 50| 47|24| 5| 11| 98|29.73| 0.00| 78| 58| 51|22| 2| 10| 53|30.33| 0.00| 34| 14| 45|05| 2| 11|
|19| 0|29.80| 0.00| 65| 53| 66|25| 2| 7| 0|29.81| 0.00| 70| 59| 67|24| 0| 2| 0|30.38| 0.00| 30| 17| 60|05| 4| 11|
|22| 0|29.81| 0.00| 63| 53| 70|24| 2| 10| 0|29.89| 0.00| 66| 61| 86|23| 0| 3| 0|30.39| 0.00| 30| 18| 59|05| 3| 9|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 16 | DEC 17 | DEC 18 |
| | | |
|01| 0|30.36| 0.00| 29| 20| 68|05| 2| 10| 0|30.15| 0.00| 37| 33| 87|22| 0| 1| 0|30.15| 0.00| 49| 47| 95|09| 0| 0|
|04| 0|30.31| 0.00| 28| 23| 81|04| 2| 9| 0|30.13| 0.00| 37| 34| 89|15| 0| 2| 0|30.12| 0.00| 50| 49| 96|09| 0| 0|
|07| 0|30.29| 0.00| 27| 24| 87|04| 0| 5| 0|30.16| 0.00| 39| 36| 90|15| 0| 0| 0|30.13| 0.00| 52| 51| 96|09| 0| 0|
|10| 67|30.30| 0.00| 30| 27| 91|32| 1| 3| 97|30.20| 0.00| 42| 39| 88|15| 0| 3| 98|30.16| 0.00| 55| 54| 97|09| 0| 0|
|13| 114|30.20| 0.00| 33| 30| 89|30| 0| 3| 156|30.15| 0.00| 47| 42| 82|09| 0| 3| 83|30.07| 0.00| 60| 60| 98|22| 0| 0|
|16| 47|30.14| 0.00| 36| 31| 82|08| 0| 3| 33|30.14| 0.00| 48| 43| 85|04| 0| 2| 54|29.99| 0.00| 64| 64| 98|21| 0| 2|
|19| 0|30.15| 0.00| 35| 30| 83|08| 1| 2| 0|30.16| 0.00| 47| 45| 92|04| 0| 1| 0|30.00| 0.00| 65| 64| 98|22| 1| 5|
|22| 0|30.17| 0.00| 36| 32| 85|08| 0| 1| 0|30.18| 0.00| 47| 46| 94|04| 0| 3| 0|30.03| 0.00| 66| 66| 98|22| 1| 7|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Precipitation | 0.14 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Date | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Time | 1043 | 1047 | 1047 | 1047 | 1047 | 1047 | 1047 | 1047 | 1047 | 1047 | 1047 | 1047 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
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 2008: Round Rock
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+
| | | | | | | | | | | | | | | | | | | | | | |
| | | | | 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|30.03| 0.00| 67| 67| 98|22| 1| 7| 0|29.96| 0.00| 67| 66| 95|22| 2| 7| 0|30.10| 0.00| 46| 28| 50|06| 6| 13|
|04| 0|30.05| 0.00| 67| 66| 97|24| 0| 1| 0|29.93| 0.00| 67| 65| 93|21| 3| 7| 0|30.20| 0.00| 38| 24| 57|05| 6| 15|
|07| 0|30.06| 0.00| 65| 64| 97|24| 0| 0| 0|29.94| 0.00| 67| 65| 94|24| 1| 4| 0|30.30| 0.00| 35| 20| 53|06| 5| 13|
|10| 58|30.11| 0.00| 70| 68| 96|25| 0| 0| 74|29.97| 0.00| 69| 65| 89|23| 0| 4| 116|30.41| 0.00| 35| 17| 48|06| 5| 13|
|13| 257|30.05| 0.00| 74| 59| 60|33| 0| 3| 288|29.92| 0.00| 75| 64| 68|25| 3| 7| 118|30.40| 0.00| 39| 14| 36|05| 4| 14|
|16| 67|30.00| 0.00| 74| 59| 60|09| 1| 3| 86|29.87| 0.00| 80| 59| 49|33| 1| 4| 102|30.42| 0.00| 42| 8| 24|06| 7| 16|
|19| 0|30.02| 0.00| 66| 57| 73|06| 0| 0| 0|29.96| 0.00| 66| 43| 42|06| 3| 7| 0|30.49| 0.00| 38| 8| 28|05| 6| 15|
|22| 0|30.02| 0.00| 60| 55| 84|06| 0| 0| 0|30.05| 0.00| 55| 30| 38|05| 4| 9| 0|30.56| 0.00| 33| 10| 38|06| 3| 9|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 22 | DEC 23 | DEC 24 |
| | | |
|01| 0|30.57| 0.00| 31| 14| 50|06| 2| 9| 0|30.19| 0.00| 35| 25| 66|22| 0| 1| 0|29.88| 0.00| 49| 48| 96|23| 3| 5|
|04| 0|30.56| 0.00| 28| 7| 40|06| 3| 11| 0|30.09| 0.00| 33| 30| 87|09| 0| 1| 0|29.95| 0.00| 52| 51| 96|32| 1| 3|
|07| 0|30.54| 0.00| 28| 6| 39|06| 2| 6| 0|30.04| 0.00| 33| 31| 93|06| 1| 2| 0|30.03| 0.00| 53| 51| 96|30| 0| 0|
|10| 127|30.52| 0.00| 30| 8| 39|07| 2| 6| 97|30.02| 0.00| 36| 35| 95|02| 0| 1| 369|30.13| 0.00| 62| 48| 61|03| 1| 8|
|13| 195|30.41| 0.00| 34| 10| 37|08| 1| 4| 165|29.93| 0.00| 45| 44| 96|23| 1| 5| 575|30.10| 0.00| 72| 31| 22|05| 3| 10|
|16| 54|30.33| 0.00| 35| 11| 36|08| 1| 3| 62|29.89| 0.00| 47| 45| 95|21| 4| 11| 127|30.11| 0.00| 69| 29| 23|06| 3| 10|
|19| 0|30.30| 0.00| 35| 12| 38|10| 1| 5| 0|29.90| 0.00| 48| 47| 94|23| 1| 5| 0|30.17| 0.00| 55| 30| 38|03| 0| 1|
|22| 0|30.26| 0.00| 35| 15| 43|14| 0| 3| 0|29.91| 0.00| 49| 47| 95|22| 1| 5| 0|30.20| 0.00| 48| 30| 49|02| 1| 2|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 25 | DEC 26 | DEC 27 |
| | | |
|01| 0|30.19| 0.00| 45| 31| 58|01| 0| 1| 0|29.96| 0.00| 68| 66| 92|23| 2| 6| 0|29.75| 0.00| 72| 66| 83|23| 3| 14|
|04| 0|30.17| 0.00| 43| 32| 66|01| 0| 2| 0|29.91| 0.00| 69| 66| 92|23| 3| 10| 0|29.72| 0.00| 72| 66| 80|23| 6| 17|
|07| 0|30.17| 0.00| 45| 35| 66|01| 1| 6| 0|29.90| 0.00| 69| 67| 92|22| 4| 13| 0|29.77| 0.00| 72| 66| 82|21| 7| 16|
|10| 153|30.19| 0.00| 51| 38| 60|34| 0| 1| 352|29.92| 0.00| 74| 68| 80|23| 5| 16| 25|29.85| 0.00| 74| 66| 77|23| 3| 6|
|13| 304|30.08| 0.00| 63| 50| 62|22| 0| 2| 181|29.84| 0.00| 79| 66| 65|24| 3| 15| 568|29.93| 0.00| 69| 31| 24|30| 12| 19|
|16| 95|30.01| 0.00| 70| 56| 60|24| 0| 5| 97|29.78| 0.00| 79| 65| 64|22| 3| 11| 151|29.99| 0.00| 65| 20| 18|33| 9| 22|
|19| 0|29.98| 0.00| 65| 60| 85|26| 1| 5| 0|29.80| 0.00| 73| 66| 78|23| 2| 9| 0|30.10| 0.00| 55| 10| 16|33| 1| 7|
|22| 0|29.98| 0.00| 65| 63| 93|22| 1| 5| 0|29.79| 0.00| 72| 66| 83|23| 4| 12| 0|30.17| 0.00| 47| 13| 25|31| 0| 1|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 28 | DEC 29 | DEC 30 |
| | | |
|01| 0|30.23| 0.00| 41| 14| 33|05| 0| 0| 0|30.32| 0.00| 33| 27| 76|07| 0| 0| 0|30.25| 0.00| 40| 25| 55|11| 0| 0|
|04| 0|30.25| 0.00| 36| 18| 48|05| 0| 0| 0|30.34| 0.00| 30| 25| 82|07| 0| 0| 0|30.20| 0.00| 37| 27| 65|11| 0| 1|
|07| 0|30.31| 0.00| 40| 24| 53|33| 0| 0| 0|30.37| 0.00| 31| 27| 85|24| 0| 0| 0|30.18| 0.00| 37| 26| 64|11| 0| 0|
|10| 77|30.35| 0.00| 45| 26| 48|07| 0| 3| 376|30.40| 0.00| 52| 37| 57|23| 0| 3| 385|30.18| 0.00| 57| 34| 42|22| 0| 3|
|13| 385|30.29| 0.00| 54| 27| 34|33| 0| 6| 612|30.31| 0.00| 72| 27| 19|23| 0| 3| 592|30.07| 0.00| 75| 29| 18|22| 5| 12|
|16| 174|30.25| 0.00| 54| 30| 40|06| 0| 2| 190|30.28| 0.00| 70| 19| 14|25| 0| 1| 250|30.01| 0.00| 74| 36| 25|22| 3| 10|
|19| 0|30.28| 0.00| 47| 31| 53|07| 0| 0| 0|30.29| 0.00| 58| 21| 24|11| 0| 0| 0|30.02| 0.00| 63| 33| 32|23| 2| 10|
|22| 0|30.32| 0.00| 38| 28| 67|07| 0| 0| 0|30.30| 0.00| 44| 23| 42|11| 0| 0| 0|30.06| 0.00| 57| 35| 43|23| 0| 1|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 31 | | |
| | | |
|01| 0|30.08| 0.00| 52| 37| 57|20| 0| 0| | |
|04| 0|30.13| 0.00| 47| 36| 65|05| 0| 0| | |
|07| 0|30.23| 0.00| 48| 32| 55|06| 4| 10| | |
|10| 350|30.31| 0.00| 54| 29| 38|07| 4| 15| | |
|13| 596|30.26| 0.00| 59| 27| 29|04| 6| 13| | |
|16| 232|30.23| 0.00| 60| 27| 28|04| 3| 9| | |
|19| 0|30.25| 0.00| 50| 27| 41|04| 0| 1| | |
|22| 0|30.22| 0.00| 45| 27| 49|05| 0| 1| | |
+--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
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|30.112| 47| 37| 69| 1.5| 26 | 0.3|
|04| 0|30.112| 45| 37| 74| 1.8| 33 | 0.5|
|07| 0|30.145| 44| 36| 73| 1.7| 02 | 0.2|
|10| 253|30.180| 53| 38| 59| 2.5| 34 | 0.4|
|13| 403|30.111| 61| 35| 44| 3.3| 32 | 0.9|
|16| 106|30.080| 61| 34| 42| 2.5| 36 | 0.8|
|19| 0|30.118| 53| 33| 50| 1.3| 35 | 0.3|
|22| 0|30.140| 48| 34| 61| 1.1| 02 | 0.0|
+--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
December 2008: Round Rock
---+-----------------------------------------------------------+-----------------------------------------------------------+---
| | |
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| | | | | | | | | | | | | | | | | | | | |0.14|0.01| |0.01|09
10| | | | | |0.01| | | | |0.01|0.02|0.01|0.02| |0.01| | | | | | | | |10
| | | | | | | | | | | | | | | | | | | | | | | | |
11| | | | | | | | | | | | | | | | | | | | | | | | |11
12| | | | | | | | | | | | | | | | | | | | | | | | |12
13| | | | | | | | | | | | | | | | | | | | | | | | |13
14| | | | | | | | | | | | | | | | | | | | | | | | |14
15| | |0.02| | | | | | | | | | | | | | | | | | | | | |15
| | | | | | | | | | | | | | | | | | | | | | | | |
16| | | | | | | | | | | | | | | | | | | | | | | | |16
17| | | | | | | | | | | | | | | | | | | | | | | | |17
18| | | | |0.05|0.02| | | | | | | |0.02|0.01| | | | | | | | | |18
19| | | | | | | | | | | | | | | | | | | | | | | | |19
20| | | | | | | | | | | | | | | | | | | | | | | | |20
| | | | | | | | | | | | | | | | | | | | | | | | |
21| | | | | | | | | | | | | | | | | | | | | | | | |21
22| | | | | | | | | | | | | | | | | | | | | | | | |22
23| | | | |0.01|0.02| |0.01| | | | | | | | | | | | | | | | |23
24| | | | |0.01| | | | | | | | | | | | | | | | | | | |24
25| | | | | | | | | | | | | | | | | | | | | | | | |25
| | | | | | | | | | | | | | | | | | | | | | | | |
26| | | | | | | | | | | | | | | | | | | | | | | | |26
27| | | | | | | | | | |0.20| | | | | | | | | | | | | |27
28| | | | | | | | | | | | | | | | | | | | | | | | |28
29| | | | | | | | | | | | | | | | | | | | | | | | |29
30| | | | | | | | | | | | | | | | | | | | | | | | |30
31| | | | | | | | | | | | | | | | | | | | | | | | |31
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
Sum|0.00|0.00|0.02|0.00|0.07|0.05|0.00|0.01|0.00|0.00|0.21|0.02|0.01|0.04|0.01|0.01|0.00|0.00|0.00|0.00|0.14|0.01|0.00|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.)