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May 2007 Weather in Review
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May 2007 continued the trend of stormy events that began around
March 11th and 12th, although for May this is not unusual either
since it is on average one of the wetter months of the year for
South Central Texas. Showers and thunderstorms were active in
the area from the 1st to the 3rd, the 6th to the 10th, late the 15th
and on the 16th,
the 22nd to the 28th, the 29th over Burnet and Llano Counties, and
in the early morning hours of the 31st over the
northeast part of the area, including the Austin Metropolitan Area.
On the first 3 days of the month showers and thunderstorms moved
across the area in several waves that brought locally heavy rains,
hail reports and strong winds. On the weekend of the 5th and 6th
most of the thunderstorm activity stayed over the west part of
the area. This activity increased the night of the 6th to early
morning of the 7th, when heavy rains caused flooding over the
west part of the area. Del Rio had a record rainfall for
May 7th of 2.13 inches. The storms developed further east the
evening of the 7th to the early morning of the 8th. The storms
returned the night of the 8th to the 9th and 10th. In wake of
a cool front more stable weather showed up the 11th and continued through the 14th. One of the warmer days of the month was on
the 13th. Showers and thunderstorms increased again late the
15th to the 16th, associated with another rain
making weather system and weak cool front. More stable conditions the
17th to the 19th did not last long as showers and thunderstorms
increased again by the 20th and 21st. The week of the 20th to the 26th saw
storm activity steadily increase. By the 23rd to 24th numerous
showers and thunderstorms broke out, and another cool front
moved across the area the night of the 24th to morning of the
25th. This brought a very heavy rain event to the hill country
to the Del Rio area the night of the 24th to morning of the 25th.
Del Rio had another daily rainfall record the 25th with 2.68
inches of rain, and a wind gust to 63 mph during a severe
thunderstorm. The high of 74 at Austin Bergstrom the 25th
set a record daily low maximum for May 25th.
The rainy pattern continued over the
Memorial Day weekend on Saturday and Sunday. Showers and thunderstorms
with heavy rain broke out Sunday afternoon and evening, and caused
some flooding. The heavy rains moved east in the night to
early morning hours of Monday May 28th. Austin Mabry picked
up 2.25 inches of rain, while Austin Bergstrom had 1.67 inches
of rain. After daybreak the 28th most of the storms moved
east of the area; however by late afternoon the storms
developed again over the east part of the area, then broke up in
the evening. On the 29th, conditions were warm and mostly
dry, then in the evening thunderstorms developed over parts
of Burnet and Llano Counties. The 30th was kind a repeat,
with mostly dry and warm conditions in the day. Thunderstorms returned
after midnight the 30th to the early morning of the 31st.
This brought a wave of thunderstorms
across the northeast part of area,
where locally heavy rains caused some flooding.
Skies cleared up in the day of the 31st, with mostly dry
and warm conditions in the afternoon. Like the 13th, the
afternoons of the 30th and 31st were among one of the warmer
afternoons of the month.
After one of the cooler Aprils of record, temperatures in May this
year were moderated compared to May of 2005 and 2006.
In addition to the shower activity, more clouds than usual and
several cool fronts helped to moderate temperatures.
Also there were some mornings where more fog than usual
delayed the onset of daytime heating. May 2007 had much more
fog conditions than usual for the 5th month of the year.
It was a tie
for the 8th coolest May on record for Del Rio, with May of 1917
and 1926, and for a tie for the 8th coolest at Austin Bergstrom
with the stormy and rainy month of May 1972. No 100 degree days
were observed across
South Central Texas, and few 90 degree days showed up.
During May of 2007, Austin,
Georgetown, Giddings, La Grange,
New Braunfels, and San Marcos had the first 90 degree day of the
year on May 13th. On the 30th Uvalde, Rocksprings,
Fredericksburg and Pleasanton reached 90 for the first time this
year. Del Rio had the first 90 degree day on March 14th.
For San Antonio the warmest day in May was 89 on the
13th, 15th, 23rd, and 30th. The last time it did not reach 90
at San Antonio by May was in 1977, when the first 90 degree day
was June 6th. San Antonio had the first 90 degree day of 2007
on June 2nd.
May 2007 Summary
Location
|
Average
Temperature
|
Average High
|
Average Low
|
Warmest/Coolest
|
Rainfall
|
|
Austin Mabry
|
75.5 +0.4
|
84.1
|
66.8
|
91 on 13th
60 on 17th
|
7.01 +1.98
|
|
Austin Bergstrom
|
74.0 -1.6
|
83.5
|
64.4
|
90 on 13th
56 on 17th and 18th
|
6.73 +1.93
|
|
Burnet
|
72.8 +0.3
|
81.2
|
64.4
|
88 on 13th and 14th
57 on 17th
|
6.31 +0.73
|
|
Del Rio
|
74.8 -2.9
|
83.6
|
66.0
|
92 on 30th
56 on 10th
|
7.93 +5.62
|
|
Hondo
|
74.2 -1.5
|
83.0
|
65.4
|
89 on 30th
58 on 18th
|
5.03 +1.25
|
|
New Braunfels
|
75.2 +1.3
|
85.0
|
65.5
|
91 on 13th and 30th
58 on 18th
|
2.60 -2.41
|
|
San Antonio
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75.3 -0.5
|
83.9
|
66.7
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89 on 13th, 15th, 23rd, and 30th
/61 on 10th
|
3.35 -1.37
|
After dry conditions in 2005 and 2006, much more rain has come
this year from January to May 2007, making this one of the wetter
January to May periods of record.
In addition, the spring months of March, April, and May in 2007
was one of the wetter Springs of record.
THE LIST BELOW SHOWS HOW JANUARY TO MAY 2007 COMPARES WITH THE
WETTEST JANUARY TO MAY PERIODS IN THE PAST.
AUSTIN BERGSTROM HAD THE 3RD WETTEST JANUARY TO MAY.
AUSTIN-BERGSTROM
HIGHEST TOTAL PRECIPITATION (INCHES)
DAYS: 1/1 - 5/31
LENGTH OF PERIOD: 151 DAYS
YEARS: 1947-2007
RANK VALUE ENDING DATE
1 28.83 5/31/1965
2 25.61 5/31/1957
3 24.22 JAN. TO MAY 2007
4 21.00 5/31/1969
DEL RIO HAD THE 4TH WETTEST JANUARY TO MAY...AND THE 4TH WETTEST
MAY...WITH 7.93 INCHES OF RAIN.
DEL RIO
HIGHEST TOTAL PRECIPITATION (INCHES)
DAYS: 1/1 - 5/31
LENGTH OF PERIOD: 151 DAYS
YEARS: 1906-2007
RANK VALUE ENDING DATE
1 19.47 5/31/1957
2 15.24 5/31/1949
3 14.60 5/31/1931
4 14.49 JAN. TO MAY 2007
5 13.69 5/31/1992
WETTEST MAYS
RANK VALUE YEAR
1 10.23 MAY 1957
2 8.91 MAY 1914
3 7.99 MAY 1925
4 7.93 MAY 2007
SAN ANTONIO HAD THE 9TH WETTEST JANUARY TO MAY.
SAN ANTONIO
HIGHEST TOTAL PRECIPITATION (INCHES)
DAYS: 1/1 - 5/31
LENGTH OF PERIOD: 151 DAYS
YEARS: 1885-2007
RANK VALUE ENDING DATE
1 29.13 5/31/1992
2 24.77 5/31/1957
3 23.69 5/31/1900
4 22.08 5/31/1935
5 21.34 5/31/1987
6 21.28 5/31/1965
7 20.87 5/31/1993
8 19.91 5/31/1885
9 19.61 JAN. TO MAY 2007
AUSTIN MABRY HAD THE 14TH WETTEST JANUARY TO MAY.
AUSTIN MABRY
HIGHEST TOTAL PRECIPITATION (INCHES)
DAYS: 1/1 - 5/31
LENGTH OF PERIOD: 151 DAYS
YEARS: 1856-2007
RANK VALUE ENDING DATE
1 32.69 5/31/1900
2 28.03 5/31/1915
3 27.77 5/31/1992
4 27.63 5/31/1922
5 25.58 5/31/1957
6 24.41 5/31/1914
7 23.32 5/31/1888
8 22.99 5/31/1884
9 22.86 5/31/1946
10 22.80 5/31/1882
11 22.60 5/31/1919
12 22.34 5/31/1965
13 22.29 5/31/1968
14 22.27 JAN. TO MAY 2007
The Spring of 2007 was one of the wetter springs on record.
The Spring of 1957 remains the wettest March to May period on
record for Austin, Del Rio, and San Antonio. This occurred
after the drought of the early to mid 1950s.
THE WETTEST MARCH TO MAY PERIODS FOR AUSTIN, DEL RIO AND SAN ANTONIO
FOLLOW.
Del Rio Area (ThreadEx Station)
Extremes
Highest Total Precipitation (inches)
Days: 3/1 - 5/31
Length of period: 92 days
Years: 1906-2007
Rank Value Ending Date
1 18.35 5/31/1957
2 12.23 5/31/2007
3 11.41 5/31/1914
San Antonio Area (ThreadEx Station)
Extremes
Highest Total Precipitation (inches)
Days: 3/1 - 5/31
Length of period: 92 days
Years: 1885-2007
Rank Value Ending Date
1 21.73 5/31/1957
2 19.90 5/31/1935
3 17.93 5/31/1900
4 17.30 5/31/1992
5 16.91 5/31/1885
6 15.84 5/31/1993
7 15.43 5/31/1987
8 15.20 5/31/2007
Austin Area (ThreadEx Station)
Extremes
Highest Total Precipitation (inches)
Days: 3/1 - 5/31
Length of period: 92 days
Years: 1891-2007
Rank Value Ending Date
1 27.88 5/31/1900
2 23.84 5/31/1915
3 22.74 5/31/1914
4 21.89 5/31/1957
5 20.60 5/31/1922
6 19.09 5/31/1929
7 17.58 5/31/1904
8 17.55 5/31/1895
9 17.06 5/31/1926
10 16.82 5/31/1946
11 16.41 5/31/1919
12 16.38 5/31/1992
13 16.31 5/31/1858
14 16.29 5/31/1976
15 15.97 5/31/1921
16 15.82 5/31/1905
17 15.71 5/31/2006
18 15.33 5/31/1885
19 15.21 5/31/2007
Austin-Bergstrom Airport Area (ThreadEx Station)
Extremes
Highest Total Precipitation (inches)
Days: 3/1 - 5/31
Length of period: 92 days
Years: 1947-2007
Rank Value Ending Date
1 22.38 5/31/1957
2 21.27 5/31/1976
3 17.80 5/31/1965
4 16.44 5/31/1969
4 16.44 5/31/2007
The updated outlook from the Climate Prediction Center for
June 2007 calls for the average monthly temperature and
rainfall to have Equal Chances of being above, below or near normal.
Click Here to See the Latest One Month Outlook from the Climate Prediction
Center.
Average climate conditions for the area in
June listed below.
June Climate Information
|
Location |
Normal Monthly Temp.
|
Normal High
|
Normal Low
| All time High
| All time Low
|
Normal Rainfall
| All Time
Driest
| All Time
Wettest
|
|
Austin/Mabry |
81.0 |
90.9 |
71.1 |
108 |
51 |
3.81 |
0 |
14.96 |
|
Austin/Bergstrom |
80.1 |
89.9 |
70.2 |
109 |
56 |
3.38 |
T |
15.59 |
|
Del Rio |
82.9 |
93.7 |
72.1 |
112 |
49 |
2.34 |
T |
13.71 |
|
San Antonio |
81.5 |
91.4 |
71.6 |
107 |
48 |
4.30 |
T |
11.95 |
|
May 2007 Weather in Review
AUSTIN...
Austin/Bergstrom International Airport:
The average May temperature was 74.0 degrees, 1.6 degrees
below normal.
The average high was 83.5 and the average low was 64.4.
Heating degree days was 0 and Cooling degree days 286.
The highest temperature was 90 on 13th, and the
lowest was 56 on the 17th and 18th.
Highest wind gust was 37 mph from the north, northeast with
thunderstorms on the 24th.
Rainfall was 6.73 inches, 1.61 inches above normal.
Rainfall from January 1st to May 31st was 24.22 inches or
9.88 inches above normal.
Austin Mabry:
The average May temperature was 75.5 degrees, 0.4 degrees
above normal.
The average high was 84.1 and the average low was 66.8.
Heating degree days was 0 and Cooling degree days 331.
The highest temperature was 91 on the 13th, and the lowest was
60 on the 17th.
Highest wind gust was 35 mph from the north, northeast with
thunderstorms on the 24th.
Rainfall for May was 7.01 inches, 1.98 inches above normal.
Rainfall from January 1st to May 31st was 22.27 inches or
8.71 inches above normal.
Go to Austin daily data for May 2007.
|
|
DEL RIO...
The average May temperature was 74.8 degrees, 2.9 degrees below normal.
The average high was 83.6 and the average low was 66.0.
Heating degree days 0 and cooling degree days 315.
The highest temperature reached 92 on the 30th.
The lowest was 56 on the 10th.
The highest wind gust was 63 mph from the north, northwest
with thunderstorms on the 25th.
Rainfall for May was 7.93 inches or 5.62 inches
above normal. May 2007 was the 4th wettest
May at Del Rio since 1906.
Rainfall from January 1st to May 31st was 14.49 inches or
7.98 inches above normal.
Go to Del Rio daily data for May 2007.
|
SAN ANTONIO...
The average May temperature was 75.3 degrees,
0.5 degrees below normal.
The average high was 83.9, and the average low was 66.7.
Heating degree days 0 and cooling degree days 324.
The highest temperature reached 89 on the 13th, 15th, 23rd,
and 30th. The lowest was 61 on the 10th.
Highest wind gust was 38 mph from the east with
thunderstorms on the 24th.
Rainfall for May was 3.35 inches, 1.37 inches below normal.
Rainfall from January 1st to May 31st was 19.61 inches or
6.99 inches above normal.
Go to San Antonio daily data for May 2007.
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