LOCAL CLIMATOLOGICAL DATA
Monthly Summary
May 2009
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| 88.0 | 71.5 | 79.8 | 77.4 | 69| 77| 0| 15|.........| 0| 0.00| 0.0| 29.97| 29.83|29.914| 1.1| 1.1|240| 13|SSW| 5|218| 125 |
|02| 87.6 | 71.3 | 79.4 | 78.1 | 69| 75| 0| 15|.........| 0| 0.00| 0.0| 29.91| 29.66|29.794| 1.0| 1.0|236| 13|WSW| 4|242| 160 |
|03| 82.6 | 69.8 | 76.2 | 74.9 | 64| 69| 0| 12|.........| 0| 0.11| 0.0| 29.91| 29.71|29.799| 1.6| 1.5| 34| 14|NNW| 5|333| 271 |
|04| 80.7 | 64.7 | 72.7 | 74.0 | 61| 64| 0| 8|.........| 0| 0.00| 0.0| 30.01| 29.81|29.904| 0.6| 0.5| 71| 11| N| 5| 28| 211 |
|05| 88.8 | 67.9 | 78.4 | 77.8 | 68| 74| 0| 14|.........| 0| 0.00| 0.0| 29.90| 29.69|29.805| 1.0| 0.9|242| 13| N| 4|258| 191 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|06| 93.4 | 72.5 | 82.9 | 81.0 | 71| 74| 0| 18|.........| 0| 0.00| 0.0| 29.81| 29.67|29.735| 1.3| 0.9|219| 13|SSW| 5|218| 220 |
|07| 89.9 | 74.6 | 82.3 | 80.4 | 72| 76| 0| 18|.........| 0| 0.00| 0.0| 29.84| 29.71|29.783| 1.0| 0.9|239| 13|WSW| 4|238| 147 |
|08| 95.1*| 74.0 | 84.6*| 81.9 | 71| 71| 0| 20|.........| 0| 0.00| 0.0| 29.81| 29.61|29.699| 2.1| 2.0|236| 16| SW| 7|221| 236 |
|09| 93.8 | 72.0 | 82.9 | 81.5 | 69| 67| 0| 18|.........| 0| 0.00| 0.0| 29.95| 29.69|29.833| 0.9| 0.6|222| 15|SSW| 7|218| 239 |
|10| 93.4 | 69.8 | 81.6 | 80.6 | 67| 66| 0| 17|.........| 0| 0.00| 0.0| 29.98| 29.85|29.929| 0.6| 0.6|231| 11| S| 4|220| 266 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|11| 90.7 | 72.7 | 81.7 | 79.3 | 70| 74| 0| 17|.........| 0| 0.00| 0.0| 30.01| 29.89|29.944| 1.4| 0.8| 80| 15|ENE| 8|274| 257 |
|12| 94.9 | 70.3 | 82.6 | 81.3 | 68| 68| 0| 18|.........| 0| 0.00| 0.0| 29.96| 29.76|29.877| 1.5| 1.4|246| 16| W| 5|221| 288 |
|13| 94.0 | 72.7 | 83.3 | 81.5 | 68| 66| 0| 19|.........| 0| 0.00| 0.0| 29.86| 29.71|29.799| 2.2| 2.2|236| 18| SW| 6|240| 269 |
|14| 90.7 | 72.8 | 81.8 | 80.2 | 68| 68| 0| 17|.........| 0| 0.00| 0.0| 30.03| 29.81|29.919| 1.4| 0.5|102| 12| E| 6| 91| 258 |
|15| 94.7 | 71.3 | 83.0 | 80.9 | 68| 67| 0| 18|.........| 0| 0.00| 0.0| 29.97| 29.81|29.904| 1.1| 1.1|238| 13|SSW| 4|230| 221 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|16| 76.0 | 64.3 | 70.2 | 69.4 | 67| 91| 0| 5|..3......| 0| 1.40| 0.0| 30.13| 29.88|29.997| 1.8| 1.3| 49| 15|ENE| 8| 32| 45 |
|17| 75.3 | 59.6 | 67.4 | 66.2 | 58| 76| 0| 3|.........| 0| 0.00| 0.0| 30.22| 30.11|30.157| 2.1| 2.1| 44| 14| N| 7| 33| 197 |
|18| 77.7 | 53.2 | 65.4*| 65.7 | 49| 59| 0| 1|.........| 0| 0.00| 0.0| 30.24| 30.12|30.183| 0.9| 0.9| 79| 12| E| 5| 92| 334 |
|19| 80.7 | 52.2*| 66.4 | 67.8 | 50| 56| 0| 2|.........| 0| 0.00| 0.0| 30.23| 30.08|30.156| 0.7| 0.7| 89| 11| E| 6| 96| 334 |
|20| 83.6 | 56.0 | 69.8 | 71.3 | 53| 56| 0| 5|.........| 0| 0.00| 0.0| 30.14| 29.96|30.064| 0.3| 0.3| 90| 10|WSW| 3| 88| 331 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|21| 86.1 | 55.7 | 70.9 | 72.7 | 57| 59| 0| 6|.........| 0| 0.00| 0.0| 30.02| 29.89|29.966| 0.5| 0.5| 91| 9| E| 4| 93| 305 |
|22| 85.5 | 65.5 | 75.5 | 75.7 | 63| 66| 0| 11|.........| 0| 0.00| 0.0| 29.97| 29.85|29.917| 1.0| 1.0| 82| 12| E| 7| 93| 287 |
|23| 84.9 | 65.2 | 75.1 | 72.8 | 65| 79| 0| 10|..3......| 0| 0.05| 0.0| 29.92| 29.82|29.877| 0.7| 0.4| 11| 11| NW| 5|324| 169 |
|24| 84.0 | 65.5 | 74.8 | 70.9 | 66| 86| 0| 10|..3......| 0| 1.30| 0.0| 29.92| 29.76|29.836| 0.6| 0.5| 3| 12|NNE| 5|318| 161 |
|25| 91.4 | 62.9 | 77.2 | 76.9 | 65| 70| 0| 12|.........| 0| 0.01| 0.0| 29.83| 29.65|29.752| 0.6| 0.3|305| 12|WNW| 4|289| 321 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|26| 92.7 | 71.3 | 82.0 | 81.6 | 64| 58| 0| 17|..3......| 0| 0.00| 0.0| 29.81| 29.65|29.700| 1.1| 1.0|234| 13|WSW| 7|260| 263 |
|27| 84.5 | 67.4 | 75.9 | 76.7 | 63| 63| 0| 11|.........| 0| 0.01| 0.0| 29.88| 29.73|29.822| 1.0| 0.8| 38| 14| NW| 6|333| 270 |
|28| 87.6 | 66.1 | 76.8 | 77.0 | 60| 59| 0| 12|.........| 0| 0.00| 0.0| 29.94| 29.84|29.897| 0.5| 0.5| 87| 10|ENE| 4| 87| 318 |
|29| 89.3 | 70.3 | 79.8 | 79.0 | 60| 54| 0| 15|.........| 0| 0.00| 0.0| 30.03| 29.92|29.971| 0.8| 0.6| 62| 13|NNW| 7|332| 290 |
|30| 93.4 | 65.2 | 79.3 | 80.2 | 60| 52| 0| 14|.........| 0| 0.00| 0.0| 30.02| 29.88|29.962| 0.3| 0.1|126| 6| E| 3| 83| 294 |
| | | | | | | | | | | | | | | | | | | | | | | | |
|31| 92.5 | 70.1 | 81.3 | 81.1 | 64| 59| 0| 17|.........| 0| 0.00| 0.0| 30.00| 29.83|29.918| 0.6| 0.5|222| 10|SSW| 4| 87| 292 |
+--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- |
+------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+
|2723.5|2078.4|------|------|---|----| 0| 395| Days | 2.88| 0.0| 30.24| 29.61|29.897| 1.0| 0.1|192| 18| SW| 8| 32| ---- |
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg |
+------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+
| 87.9| 67.0| 77.4 | 76.6 | 64|67.8|----|----|>.01 Inch 6|11.03| T | 18 | 8 |------|----|----|---| 13 | 16 | 244|
+------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+
| | 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 |1356| 738|Thunder 4|Precipitation | Snow, Ice Plts | and Date |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+
| >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 0| 1.40| 16 | 0.0 | - | 0 | - |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+
| 14 | 0 | 0 | 0 |----|----| Clear 27 Partly Cloudy 0 Cloudy 4 |
+--------+---------+--------+--------+----+----+------------------------------------------+
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
May 2009: 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 |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 1 | MAY 2 | MAY 3 |
| | | |
|01| 0|29.94| 0.00| 73| 68| 87|22| 1| 5| 0|29.90| 0.00| 72| 68| 87|20| 1| 5| 0|29.72| 0.00| 75| 68| 81|23| 0| 6|
|04| 0|29.92| 0.00| 73| 69| 89|22| 1| 6| 0|29.85| 0.00| 72| 68| 90|21| 1| 5| 0|29.74| 0.00| 71| 65| 82|03| 3| 3|
|07| 9|29.94| 0.00| 72| 69| 92|22| 0| 5| 9|29.85| 0.00| 72| 69| 90|23| 1| 3| 0|29.75| 0.00| 71| 65| 82|03| 3| 3|
|10| 336|29.97| 0.00| 77| 71| 81|23| 2| 13| 315|29.84| 0.00| 79| 70| 74|22| 3| 12| 276|29.82| 0.00| 73| 65| 75|26| 0| 2|
|13| 223|29.94| 0.00| 80| 70| 73|24| 2| 10| 288|29.80| 0.00| 84| 69| 62|25| 1| 9| 791|29.83| 0.00| 78| 61| 56|05| 3| 7|
|16| 294|29.88| 0.00| 85| 70| 60|24| 1| 6| 250|29.73| 0.00| 87| 69| 54|25| 2| 6| 780|29.78| 0.00| 82| 63| 53|02| 2| 6|
|19| 153|29.84| 0.00| 85| 68| 58|08| 1| 6| 40|29.69| 0.00| 82| 69| 64|19| 1| 6| 181|29.80| 0.00| 77| 60| 57|05| 1| 7|
|22| 0|29.89| 0.00| 76| 68| 76|23| 2| 5| 0|29.72| 0.00| 77| 68| 75|28| 1| 6| 0|29.89| 0.00| 73| 60| 64|05| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 4 | MAY 5 | MAY 6 |
| | | |
|01| 0|29.92| 0.00| 73| 60| 64|05| 0| 0| 0|29.89| 0.00| 68| 63| 83|09| 2| 5| 0|29.72| 0.00| 74| 71| 89|25| 2| 6|
|04| 0|29.91| 0.00| 73| 60| 64|05| 0| 0| 0|29.84| 0.00| 68| 64| 85|07| 0| 2| 0|29.68| 0.00| 73| 70| 92|21| 1| 6|
|07| 0|29.94| 0.00| 73| 60| 64|05| 0| 0| 7|29.86| 0.00| 70| 67| 90|07| 0| 2| 7|29.70| 0.00| 73| 70| 91|21| 0| 6|
|10| 427|30.00| 0.00| 67| 56| 67|03| 0| 9| 322|29.89| 0.00| 77| 71| 82|23| 1| 4| 236|29.75| 0.00| 80| 71| 75|22| 3| 9|
|13| 919|29.93| 0.00| 76| 61| 60|08| 1| 7| 429|29.83| 0.00| 88| 69| 55|26| 1| 5|1130|29.77| 0.00| 90| 72| 57|22| 1| 5|
|16| 345|29.86| 0.00| 79| 62| 56|09| 1| 4| 302|29.74| 0.00| 88| 70| 55|26| 1| 7| 889|29.73| 0.00| 93| 72| 51|07| 1| 5|
|19| 181|29.83| 0.00| 79| 64| 60|09| 1| 4| 102|29.69| 0.00| 84| 71| 64|24| 2| 7| 105|29.73| 0.00| 87| 72| 60|09| 1| 4|
|22| 0|29.87| 0.00| 71| 63| 77|09| 1| 5| 0|29.74| 0.00| 78| 71| 78|30| 1| 7| 0|29.79| 0.00| 80| 71| 74|23| 0| 5|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 7 | MAY 8 | MAY 9 |
| | | |
|01| 0|29.82| 0.00| 76| 71| 86|27| 0| 2| 0|29.75| 0.00| 74| 70| 87|27| 2| 7| 0|29.77| 0.00| 75| 66| 73|21| 1| 6|
|04| 0|29.80| 0.00| 75| 72| 91|20| 0| 2| 0|29.71| 0.00| 74| 70| 88|22| 1| 10| 0|29.70| 0.00| 72| 69| 89|21| 3| 12|
|07| 7|29.81| 0.00| 75| 71| 89|22| 0| 3| 7|29.71| 0.00| 74| 71| 89|22| 2| 10| 16|29.81| 0.00| 72| 69| 91|22| 0| 4|
|10| 153|29.83| 0.00| 77| 74| 88|22| 1| 4| 202|29.73| 0.00| 78| 72| 80|22| 3| 11| 573|29.89| 0.00| 82| 71| 71|23| 1| 4|
|13| 508|29.82| 0.00| 84| 73| 71|24| 0| 9| 717|29.70| 0.00| 89| 73| 59|24| 3| 12| 473|29.89| 0.00| 89| 71| 56|29| 0| 6|
|16| 904|29.74| 0.00| 90| 73| 59|25| 1| 8| 742|29.63| 0.00| 95| 72| 47|22| 3| 12| 782|29.83| 0.00| 93| 70| 47|24| 0| 5|
|19| 149|29.71| 0.00| 88| 72| 59|27| 2| 7| 172|29.62| 0.00| 91| 71| 53|23| 3| 10| 102|29.83| 0.00| 90| 67| 47|11| 1| 6|
|22| 0|29.75| 0.00| 79| 69| 70|22| 1| 5| 0|29.72| 0.00| 80| 68| 67|27| 2| 9| 0|29.91| 0.00| 81| 68| 64|25| 0| 1|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 10 | MAY 11 | MAY 12 |
| | | |
|01| 0|29.97| 0.00| 73| 64| 75|04| 0| 1| 0|29.93| 0.00| 75| 69| 80|23| 0| 3| 0|29.96| 0.00| 73| 68| 85|09| 0| 1|
|04| 0|29.95| 0.00| 71| 67| 87|23| 0| 3| 0|29.94| 0.00| 73| 70| 90|22| 0| 1| 0|29.92| 0.00| 70| 68| 92|09| 0| 0|
|07| 14|29.94| 0.00| 72| 69| 92|22| 1| 4| 40|29.93| 0.00| 73| 71| 93|20| 0| 2| 19|29.94| 0.00| 72| 70| 95|21| 0| 1|
|10| 290|29.98| 0.00| 79| 69| 71|22| 2| 9| 466|29.97| 0.00| 81| 72| 74|23| 1| 7| 640|29.95| 0.00| 82| 69| 65|22| 2| 9|
|13| 366|29.96| 0.00| 88| 68| 52|19| 0| 6| 504|30.00| 0.00| 88| 67| 51|03| 1| 5| 949|29.89| 0.00| 91| 69| 48|26| 2| 9|
|16| 234|29.89| 0.00| 93| 66| 41|24| 2| 6| 747|29.93| 0.00| 84| 69| 60|06| 4| 9| 810|29.81| 0.00| 95| 66| 39|23| 2| 9|
|19| 165|29.86| 0.00| 90| 63| 41|06| 0| 5| 176|29.89| 0.00| 84| 69| 61|10| 3| 9| 102|29.76| 0.00| 89| 65| 44|24| 2| 11|
|22| 0|29.89| 0.00| 81| 67| 64|33| 0| 3| 0|29.94| 0.00| 77| 69| 76|07| 0| 5| 0|29.79| 0.00| 79| 68| 69|26| 0| 4|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 13 | MAY 14 | MAY 15 |
| | | |
|01| 0|29.82| 0.00| 75| 68| 81|25| 3| 9| 0|29.83| 0.00| 75| 68| 79|24| 3| 10| 0|29.95| 0.00| 74| 65| 73|22| 1| 6|
|04| 0|29.82| 0.00| 74| 69| 85|26| 2| 9| 0|29.83| 0.00| 73| 69| 87|23| 1| 7| 0|29.92| 0.00| 72| 69| 89|25| 1| 5|
|07| 12|29.81| 0.00| 73| 70| 90|24| 1| 5| 14|29.91| 0.00| 73| 70| 88|08| 0| 4| 9|29.95| 0.00| 72| 69| 92|25| 0| 1|
|10| 295|29.84| 0.00| 81| 71| 73|25| 2| 15| 179|30.02| 0.00| 76| 71| 83|09| 5| 11| 190|29.97| 0.00| 80| 69| 70|23| 1| 6|
|13| 833|29.80| 0.00| 90| 71| 54|24| 3| 14| 946|30.00| 0.00| 87| 68| 53|07| 2| 6|1030|29.93| 0.00| 91| 69| 49|24| 0| 5|
|16| 837|29.73| 0.00| 94| 68| 44|23| 4| 13| 810|29.92| 0.00| 90| 66| 46|08| 3| 6| 250|29.86| 0.00| 91| 65| 43|21| 1| 6|
|19| 183|29.74| 0.00| 89| 66| 47|23| 2| 9| 206|29.89| 0.00| 87| 63| 45|04| 1| 7| 83|29.81| 0.00| 86| 66| 53|23| 2| 7|
|22| 0|29.81| 0.00| 80| 63| 56|23| 2| 10| 0|29.94| 0.00| 79| 63| 58|28| 1| 4| 0|29.86| 0.00| 79| 68| 67|22| 2| 6|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 16 | MAY 17 | MAY 18 |
| | | |
|01| 0|29.90| 0.00| 75| 69| 82|23| 3| 7| 0|30.13| 0.00| 65| 63| 93|03| 2| 5| 0|30.19| 0.00| 59| 53| 79|05| 0| 2|
|04| 0|29.88| 0.00| 73| 69| 87|23| 1| 5| 0|30.13| 0.00| 63| 60| 89|03| 3| 10| 0|30.18| 0.00| 55| 50| 83|05| 0| 2|
|07| 25|29.92| 0.00| 73| 70| 91|21| 0| 3| 12|30.17| 0.00| 60| 56| 85|03| 3| 7| 30|30.20| 0.00| 54| 49| 86|05| 1| 3|
|10| 202|29.97| 0.00| 75| 72| 89|23| 0| 3| 193|30.20| 0.00| 63| 55| 76|05| 3| 12| 592|30.24| 0.00| 66| 49| 55|09| 2| 6|
|13| 28|30.06| 0.38| 64| 63| 96|05| 6| 14| 478|30.19| 0.00| 66| 58| 75|01| 2| 9| 979|30.21| 0.00| 73| 49| 43|09| 2| 6|
|16| 237|30.03| 0.00| 66| 65| 95|04| 4| 10| 998|30.14| 0.00| 75| 62| 64|05| 2| 7| 824|30.15| 0.00| 77| 46| 33|07| 2| 10|
|19| 35|30.05| 0.00| 66| 65| 94|03| 1| 7| 236|30.12| 0.00| 73| 60| 62|05| 1| 7| 243|30.13| 0.00| 75| 43| 31|08| 3| 6|
|22| 0|30.11| 0.00| 66| 64| 94|04| 0| 4| 0|30.16| 0.00| 64| 57| 77|09| 0| 0| 0|30.17| 0.00| 65| 51| 62|10| 0| 1|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Precipitation | 0.29 | 0.49 | 0.60 | 0.67 | 0.70 | 0.94 | 1.04 | 1.11 | 1.12 | 1.12 | 1.13 | 1.24 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Date | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 16 | 16 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Time | 0953 | 0958 | 0959 | 1004 | 1008 | 1029 | 1042 | 1100 | 1100 | 1100 | 1243 | 1315 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
The precipitation amounts for the indicated time intervals may occur at any time during the month. The time indicated
is the ending time of the interval. Date and time are not entered for trace amounts.
OBSERVATIONS AT 3-HOUR INTERVALS
May 2009: 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 |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 19 | MAY 20 | MAY 21 |
| | | |
|01| 0|30.18| 0.00| 59| 48| 69|10| 0| 0| 0|30.11| 0.00| 63| 52| 68|10| 0| 0| 0|30.00| 0.00| 63| 52| 67|08| 0| 0|
|04| 0|30.18| 0.00| 54| 48| 80|10| 0| 0| 0|30.10| 0.00| 59| 52| 77|10| 0| 0| 0|29.99| 0.00| 58| 51| 80|08| 0| 0|
|07| 30|30.20| 0.00| 53| 49| 86|04| 0| 3| 23|30.12| 0.00| 56| 52| 87|10| 0| 1| 30|30.00| 0.00| 56| 52| 87|08| 0| 1|
|10| 598|30.22| 0.00| 70| 51| 51|07| 1| 6| 584|30.14| 0.00| 76| 56| 50|09| 1| 4| 589|30.01| 0.00| 78| 57| 49|09| 1| 4|
|13| 986|30.18| 0.00| 77| 45| 33|08| 2| 7| 958|30.09| 0.00| 78| 56| 47|08| 1| 3| 963|29.98| 0.00| 84| 57| 41|10| 2| 6|
|16| 823|30.11| 0.00| 80| 47| 31|09| 1| 7| 789|30.01| 0.00| 82| 52| 36|08| 1| 5| 199|29.92| 0.00| 85| 57| 39|08| 1| 7|
|19| 239|30.08| 0.00| 79| 50| 36|08| 1| 5| 237|29.97| 0.00| 81| 48| 31|06| 0| 3| 199|29.89| 0.00| 83| 60| 47|09| 1| 5|
|22| 0|30.11| 0.00| 69| 53| 57|10| 0| 1| 0|29.99| 0.00| 72| 52| 50|08| 0| 1| 0|29.93| 0.00| 75| 61| 63|09| 0| 1|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 22 | MAY 23 | MAY 24 |
| | | |
|01| 0|29.94| 0.00| 71| 62| 72|09| 0| 1| 0|29.91| 0.00| 68| 63| 83|07| 0| 1| 0|29.85| 0.00| 67| 65| 92|33| 0| 2|
|04| 0|29.93| 0.00| 67| 62| 83|09| 0| 3| 0|29.88| 0.00| 67| 64| 89|05| 0| 1| 0|29.83| 0.00| 67| 65| 92|33| 0| 3|
|07| 33|29.94| 0.00| 66| 62| 88|02| 0| 2| 25|29.90| 0.00| 66| 63| 93|03| 1| 4| 18|29.86| 0.00| 67| 65| 93|33| 0| 2|
|10| 571|29.96| 0.00| 78| 65| 64|09| 0| 3| 673|29.92| 0.00| 81| 69| 67|30| 2| 4| 7|29.91| 0.85| 68| 66| 92|04| 1| 7|
|13|1137|29.93| 0.00| 84| 65| 53|06| 2| 7| 315|29.89| 0.00| 82| 65| 57|04| 1| 6| 362|29.87| 0.00| 70| 68| 95|32| 0| 3|
|16| 849|29.88| 0.00| 84| 62| 47|08| 4| 9| 185|29.83| 0.00| 82| 67| 60|10| 5| 8| 555|29.80| 0.00| 82| 67| 60|02| 1| 6|
|19| 272|29.85| 0.00| 82| 61| 49|09| 4| 12| 11|29.83| 0.00| 71| 66| 82|35| 0| 5| 295|29.77| 0.07| 74| 69| 83|05| 1| 6|
|22| 0|29.90| 0.00| 74| 63| 69|07| 0| 1| 0|29.85| 0.00| 69| 66| 92|31| 0| 4| 0|29.81| 0.00| 70| 66| 87|03| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 25 | MAY 26 | MAY 27 |
| | | |
|01| 0|29.81| 0.00| 66| 63| 90|03| 0| 0| 0|29.70| 0.00| 75| 66| 73|19| 0| 3| 0|29.75| 0.00| 75| 63| 68|22| 0| 1|
|04| 0|29.78| 0.00| 66| 64| 94|24| 0| 1| 0|29.66| 0.00| 74| 70| 87|21| 0| 2| 0|29.81| 0.00| 71| 60| 69|04| 0| 2|
|07| 26|29.83| 0.00| 63| 62| 95|24| 0| 1| 18|29.70| 0.00| 72| 64| 76|21| 0| 0| 19|29.83| 0.00| 68| 59| 75|03| 0| 0|
|10| 571|29.80| 0.00| 79| 67| 67|32| 3| 7| 301|29.80| 0.00| 78| 63| 60|25| 3| 12| 213|29.87| 0.00| 73| 62| 69|02| 3| 6|
|13| 956|29.78| 0.00| 85| 65| 52|28| 1| 4| 831|29.74| 0.00| 89| 63| 42|22| 1| 11| 972|29.85| 0.00| 84| 65| 53|34| 2| 8|
|16| 805|29.69| 0.00| 90| 64| 42|32| 1| 5| 573|29.68| 0.00| 92| 62| 38|22| 1| 7| 932|29.84| 0.00| 84| 65| 52|07| 1| 6|
|19| 70|29.65| 0.00| 86| 65| 50|09| 2| 4| 239|29.65| 0.00| 91| 60| 35|22| 1| 4| 86|29.81| 0.00| 81| 62| 54|08| 2| 7|
|22| 0|29.67| 0.00| 78| 66| 67|10| 0| 1| 0|29.70| 0.00| 81| 63| 55|23| 0| 2| 0|29.82| 0.00| 76| 64| 67|09| 0| 1|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 28 | MAY 29 | MAY 30 |
| | | |
|01| 0|29.88| 0.00| 71| 63| 77|09| 0| 2| 0|29.92| 0.00| 71| 59| 65|10| 0| 1| 0|30.01| 0.00| 74| 54| 51|08| 0| 0|
|04| 0|29.88| 0.00| 68| 62| 80|35| 0| 0| 0|29.92| 0.00| 71| 61| 71|03| 0| 1| 0|29.98| 0.00| 67| 56| 67|08| 0| 0|
|07| 25|29.90| 0.00| 66| 62| 86|35| 0| 1| 26|29.96| 0.00| 70| 60| 70|00| 0| 4| 21|30.00| 0.00| 65| 57| 75|08| 0| 0|
|10| 587|29.92| 0.00| 76| 62| 63|09| 1| 4| 582|30.03| 0.00| 83| 64| 54|26| 0| 2| 570|30.02| 0.00| 82| 66| 57|10| 0| 3|
|13| 986|29.92| 0.00| 86| 63| 47|10| 1| 5| 540|30.02| 0.00| 84| 62| 48|09| 2| 5|1002|29.98| 0.00| 91| 64| 42|23| 1| 3|
|16| 800|29.89| 0.00| 87| 61| 41|10| 1| 5| 828|29.97| 0.00| 89| 62| 41|06| 3| 8| 802|29.91| 0.00| 93| 58| 31|09| 2| 5|
|19| 51|29.88| 0.00| 85| 55| 36|09| 1| 4| 232|29.94| 0.00| 86| 59| 40|08| 1| 4| 146|29.89| 0.00| 90| 58| 35|09| 2| 5|
|22| 0|29.91| 0.00| 77| 58| 52|10| 0| 1| 0|29.98| 0.00| 77| 59| 54|09| 0| 1| 0|29.93| 0.00| 81| 63| 55|08| 0| 1|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 31 | | |
| | | |
|01| 0|29.94| 0.00| 76| 65| 68|21| 0| 4| | |
|04| 0|29.92| 0.00| 72| 65| 79|21| 0| 1| | |
|07| 58|29.96| 0.00| 70| 66| 86|21| 0| 1| | |
|10| 541|30.00| 0.00| 81| 65| 58|22| 1| 8| | |
|13| 946|29.93| 0.00| 89| 66| 46|24| 0| 5| | |
|16| 835|29.87| 0.00| 92| 67| 43|24| 1| 6| | |
|19| 276|29.83| 0.00| 89| 61| 39|35| 1| 5| | |
|22| 0|29.89| 0.00| 80| 59| 49|24| 1| 3| | |
+--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
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|29.909| 71| 64| 77| 0.7| 24 | 0.4|
|04| 0|29.892| 69| 64| 84| 0.6| 25 | 0.2|
|07| 21|29.916| 68| 64| 87| 0.4| 35 | 0.0|
|10| 405|29.952| 77| 65| 69| 1.6| 23 | 0.3|
|13| 741|29.927| 83| 65| 55| 1.4| 05 | 0.2|
|16| 657|29.863| 87| 64| 48| 1.8| 09 | 0.5|
|19| 167|29.839| 84| 63| 51| 1.3| 10 | 0.4|
|22| 0|29.885| 76| 63| 66| 0.5| 25 | 0.4|
+--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
May 2009: 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| | | | |0.11| | | | | | | | | | | | | | | | | | | |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| | | | | | | | | | |0.27|0.75|0.17|0.13|0.06|0.01| |0.01| | | | | | |16
17| | | | | | | | | | | | | | | | | | | | | | | | |17
18| | | | | | | | | | | | | | | | | | | | | | | | |18
19| | | | | | | | | | | | | | | | | | | | | | | | |19
20| | | | | | | | | | | | | | | | | | | | | | | | |20
| | | | | | | | | | | | | | | | | | | | | | | | |
21| | | | | | | | | | | | | | | | | | | | | | | | |21
22| | | | | | | | | | | | | | | | | | | | | | | | |22
23| | | | | | | | | | | | | | | | | | |0.01|0.03| |0.01| | |23
24| | | | | | | | | |0.63|0.48|0.01| | | | | | |0.18| | | | | |24
25| | | | |0.01| | | | | | | | | | | | | | | | | | | |25
| | | | | | | | | | | | | | | | | | | | | | | | |
26| | | | | | | | | | | | | | | | | | | | | | | | |26
27| | | | | | | | |0.01| | | | | | | | | | | | | | | |27
28| | | | | | | | | | | | | | | | | | | | | | | | |28
29| | | | | | | | | | | | | | | | | | | | | | | | |29
30| | | | | | | | | | | | | | | | | | | | | | | | |30
31| | | | | | | | | | | | | | | | | | | | | | | | |31
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
Sum|0.00|0.00|0.00|0.00|0.12|0.00|0.00|0.00|0.01|0.63|0.75|0.76|0.17|0.13|0.06|0.01|0.00|0.01|0.19|0.03|0.00|0.01|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.)