June 2006 Weather Review - National Weather Service Forecast Office

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June 2006 Weather in Review

In the dry period that has been ongoing over the area for the past 15 months, since April 2005, total monthly rainfall for most places across South Central Texas was below average in June 2006. Even the record daily June 30th rain of 2.06 inches at Del Rio on June 30th was not enough to push Del Rio's monthly rain above average, as only 0.01 fell from the 1st to the 29th. Like most of 2006, the gradient of rainfall from north, wetter, to drier south, continued in June of 2006. June 2006 was also warmer than usual for June. The average monthly temperature was near 1 to 3 degrees above the 1971 to 2000 normals for most locations, and ended up mainly in the top third for the warmest June of record. It was the 12th warmest June for Del Rio since 1906, with 13 100 degree days. June 2006 was a tie with 1971 for the 19th warmest June for San Antonio since 1885; and a tie with 1971 at Austin Bergstrom for the 32nd warmest June since 1943. At Austin Mabry June 2006 tied with 1884, 1895, 1947 and 2001 for the 37th warmest June since 1854. The warm temperatures for the first half of 2006 made the dryness more intense.
Since the beginning of record, June climatologically is the 3rd wettest at San Antonio 1885-2005; 4th wettest at Del Rio 1906-2005, and 5th wettest for the Austin Area, 1856 to 2005. The latest 30 Year 1971 to 2000 Normals paint a little different picture, showing the June as the wettest at Del Rio; 3rd wettest at Austin Mabry and Austin Bergstrom; and 2nd wettest at San Antonio.
June 2006 rain at Austin, Del Rio and San Antonio follows:
AUSTIN MABRY........ 3.18 INCHES...0.63 INCHES BELOW NORMAL AUSTIN BERGSTROM.... 2.64 INCHES...0.78 INCHES BELOW NORMAL DEL RIO............. 2.07 INCHES...0.28 INCHES BELOW NORMAL SAN ANTONIO......... 1.63 INCHES...2.67 INCHES BELOW NORMAL June 2006 rainfall at other locations is listed below. BURNET.............. 1.04 INCHES...3.05 INCHES BELOW NORMAL HONDO............... 0.42 INCHES...3.15 INCHES BELOW NORMAL NEW BRAUNFELS....... 1.79 INCHES...3.02 INCHES BELOW NORMAL

For a listing of how Year 2006 rainfall has evolved and looks graphically month to month, See Additional Inforamtion on 2006 rainfall over South Central Texas
The warmth for the first half 2006 has also added to the dryness, as evaporation rates have been more than usual. The period from January 1st to June 30th of 2006 has had the warmest average temperature over that time span at San Antonio, since 1885; the 2nd warmest at Austin Mabry, since 1854; a tie with 1950 and 1971 for the 9th warmest at Austin Bergstrom, since 1943; and a tie with 1953 for the 2nd warmest January to June average temperature at Del Rio since 1906.
The warmest periods for the first half of any year, from January to June at Austin, San Antonio and Del Rio follows.
San Antonio Area (ThreadEx Station) Extremes Highest Average Temperature (degrees F) Days: 1/1 - 6/30 Length of period: 181 days Years: 1885-2006 Rank Value Ending Date 1 70.2 6/30/2006 2 69.3 6/30/1925 3 69.2 6/30/2000 4 69.1 6/30/1927 5 68.9 6/30/1990 6 68.7 6/30/1911 7 68.6 6/30/1916 8 68.5 6/30/1933 8 68.5 6/30/1916 10 68.3 6/30/1954 11 68.2 6/30/1971 Austin Area (ThreadEx Station) Extremes Highest Average Temperature (degrees F) Days: 1/1 - 6/30 Length of period: 181 days Years: 1854-2006 Rank Value Ending Date 1 69.2 6/30/2000 2 69.0 6/30/2006 3 68.9 6/30/1990 4 68.4 6/30/1999 5 68.0 6/30/1890 6 67.5 6/30/1998 7 67.4 6/30/1967 7 67.4 6/30/1927 7 67.4 6/30/1916 7 67.4 6/30/1911 11 67.2 6/30/1925 Austin-Bergstrom Airport Area (ThreadEx Station) Extremes Highest Average Temperature (degrees F) Days: 1/1 - 6/30 Length of period: 181 days Years: 1943-2006 Rank Value Ending Date 1 69.0 6/30/1954 2 68.9 6/30/1953 3 68.5 6/30/1956 4 68.4 6/30/1990 5 68.3 6/30/1955 6 68.1 6/30/1972 7 68.0 6/30/1967 8 67.8 6/30/1952 9 67.6 6/30/1971 9 67.6 6/30/1950 9 67.6 6/30/2006 Del Rio Area (ThreadEx Station) Extremes Highest Average Temperature (degrees F) Days: 1/1 - 6/30 Length of period: 181 days Years: 1906-2006 Rank Value Ending Date 1 71.9 6/30/2000 2 70.8 6/30/1953 2 70.8 6/30/2006 4 70.4 6/30/1998 5 70.2 6/30/1907 6 69.8 6/30/1999 7 69.4 6/30/2002 7 69.4 6/30/1911 7 69.4 6/30/1916

A brief summary of June weather events follows. On June 1st scattered showers brought some relief from the drought, and then drier weather followed Friday the 2nd to the weekend of the 3rd and 4th. As the subtropical high increased over the area, much drier weather with very low humidity for June came the week of June the 5th to June the 10th. The dryness and warmth increased the 11th to the 13th, with the 13th and 14th ending up as the hottest days of the month. Southerly winds on the 15th and 16th increased ahead of a rain making weather system in the Rockies. The moderate to strong gulf breezes caused afternoon highs to moderate a few degrees the 15th and 16th. Rain with thunderstorms followed night of the 16th/17th and 17th/18th, as a series of rain making systems moved across the area from the north. Dry weather returned the 19th, then rains came back the 20th, 21st, and over the east part of the area the 22nd. Widely scattered showers and thunderstorms came from the north again in the predawn hours of the 24th, and became more isolated by the afternoon and early evening. These showers and thunderstorms were associated with a weak cool front that moved south of the area, and was followed by another reinforcing weak cool front on Monday the 26th. These cool fronts made for cooler overnight lows and low relative humilities for June. The coolest early morning lows for June 2006 came the 27th and 28th, with lows in the upper 50s to low 60s over the Hill Country, near 60 to low 60s over parts of Central Texas, and in the 60s over the east part of South Central Texas to 70s near the Rio Grande. Record lows were observed in the Austin Area. The low of 60 at Austin Bergstrom the 27th tied the daily record for the 27th observed in 1968. The low of 61 at Austin Bergstorm the 28th broke the record of 64 set June 28, 1974. The low of 63 June 28th at Austin Mabry tied the record low for June 28th previously observed in 1916. The month ended on the 29th and 30th with increasing clouds and a weather pattern that was much more favorable for showers. On June 30th, heavy rains fell in Val Verde County, where Del Rio picked up 2.06 inches of rain. This set a daily record rainfall for June 30th at Del Rio, and boosted the monthly rainfall from 0.01 inches to 2.07 inches in one day.
In the ongoing drought that continued in June 2006, the cumulative 12 month rainfall statistics continued to show the dry trend, that began in March and April of 2005.

FROM JULY 1ST...2005 TO JUNE 30TH...2006 SAN ANTONIO HAD ONLY 14.75 INCHES OF RAIN. OF THE DRIEST JULY 1ST TO JUNE 30TH PERIODS SINCE 1885...THIS WAS THE 7TH DRIEST IN 121 YEARS. THE DRIEST CALENDAR YEAR AT SAN ANTONIO WAS 10.11 INCHES IN 1917...AND THE DRIEST CONSECUTIVE 12 MONTH PERIOD WAS 9.26 INCHES FROM FEBRUARY 1...1917 TO JANUARY 31...1918. THE 10 DRIEST JULY 1ST TO JUNE 30TH TIME PERIODS AT SAN ANTONIO FOLLOWS. San Antonio Area (ThreadEx Station) Extremes Lowest Total Precipitation (inches) Days: 7/1 - 6/30 Length of period: 365 days Years: 1885-2006 Rank Value Ending Date 1 9.84 6/30/1925 2 11.29 6/30/1956 3 12.95 6/30/1939 4 14.03 6/30/1967 5 14.17 6/30/1996 6 14.22 6/30/1971 7 14.75 6/29/2006 8 16.49 6/30/1910 9 16.70 6/30/1902 10 17.13 6/30/1954 FROM JULY 1ST...2005 TO JUNE 30TH...2006 AUSTIN BERGSTROM HAD ONLY 22.43 INCHES OF RAIN. OF THE DRIEST JULY 1ST TO JUNE 30TH PERIODS SINCE 1943...THIS WAS THE 9TH DRIEST IN 63 YEARS. THE 10 DRIEST JULY 1ST TO JUNE 30TH TIME PERIODS AT AUSTIN BERGSTROM FOLLOWS. Austin-Bergstrom Airport Area (ThreadEx Station) Extremes Lowest Total Precipitation (inches) Days: 7/1 - 6/30 Length of period: 365 days Years: 1948-2006 Rank Value Ending Date 1 14.73 6/30/1971 2 15.97 6/30/1948 3 16.55 6/30/1956 4 17.40 6/30/1955 5 17.70 6/30/1978 6 20.49 6/30/1949 7 20.61 6/30/1990 8 21.64 6/30/1994 9 22.43 6/30/2006 10 22.55 6/30/1988 JULY 1ST...2005 TO JUNE 30...2006 RAINFALL AT AUSTIN MABRY AND DEL RIO WAS NOT IN THE TOP 10 DRIEST JULY TO JUNE PERIODS.

RECORD DAILY HIGHS AND LOWS FOR JUNE 2006 FOLLOW. June 6... AUSTIN BERGSTROM HIGH OF 96 IN 2006 TIED THE OLD RECORD OF 96 SET IN 1964 AND PREVIOUS YEARS. June 13... AUSTIN BERGSTROM HIGH OF 102 IN 2006 TIED THE OLD RECORD OF 101 SET IN 1998. AUSTIN MABRY HIGH OF 101 IN 2006 TIED THE OLD RECORD OF 101 SET IN 1960 AND EARLIER YEARS. SAN ANTONIO HIGH OF 101 IN 2006 TIED THE OLD RECORD OF 101 SET IN 1998 AND EARLIER YEARS. June 27... AUSTIN BERGSTROM LOW OF 60 IN 2006 TIED THE OLD RECORD OF 60 SET IN 1968. June 28... AUSTIN BERGSTROM LOW OF 61 IN 2006 BROKE OLD RECORD OF 64 SET IN 1974 AUSTIN MABRY LOW OF 63 IN 2006 TIED THE OLD RECORD OF 63 SET IN 1916.

June 2006 Weather in Review

AUSTIN...
Austin/Bergstrom International Airport:
The average June temperature was 81.4 degrees, 0.1 degrees below normal. June 2006 tied June of 2002 for the 32nd warmest June of record at Austin Bergstrom. The average high was 93.9 and the average low was 68.9. Heating degree days was 0. Cooling degree days 497. The highest temperature was 102 on the 13th. The lowest was 60 on the 27th. Highest wind gust was 35 mph from the northwest with thunderstorms in the early morning of the 18th. Rainfall was 2.64 inches, 0.78 inches below normal. Rainfall for 2006 from January 1st to June 30th, 2006... 14.91 inches or 2.85 inches below normal.

Austin Mabry:
The average June temperature was 82.7 degrees, 1.7 degrees above normal. This was the 37th warmest June of record. The average high was 94.0 and the average low 71.3. Heating degree days 0 and Cooling degree days 536. The highest temperature reached 101 on the 13th. The lowest was 63 on the 28th. Highest wind gust was 30 mph from the west, northwest with thunderstorms on the evening of the 17th. Rainfall was 3.18 inches, 0.63 inches below normal. Rainfall for 2006 from January 1st to June 30th, 2006... 21.58 inches, 4.21 inches above normal.

Go to Austin daily data for June 2006.

DEL RIO...
The average June temperature was 85.9 degrees, 3.0 degrees above normal, and the 12th warmest June on record. The average high was 98.2, and the average low was 73.7. Heating degree days 0 and cooling degree days 637. The highest temperature reached 105 on the 14th. The lowest was 66 on the 2nd. The highest wind gust was 38 mph from the north, northeast with thunderstorms on the 30th. Rainfall was 2.07 inches, 0.27 inches below normal. Rainfall for 2006 from January 1st to June 30th, 2006... 4.94 inches or 3.91 inches below normal.
Go to Del Rio daily data for June 2006.

SAN ANTONIO...
The average June temperature was 83.6 degrees, 2.1 degrees above normal. June 2006 was the 19th warmest June of record. The average high was 95.4, and average low was 71.8. Heating degree days 0 and cooling degree days 567. The highest temperature reached 101 on the 13th. The lowest was 65 on the 28th. Highest wind gust was 38 mph from the north, northwest with thunderstorms on the night of the 17th. Rainfall was 1.63 inches, 2.67 inches below normal. Rainfall for from January 1st to June 30th, 2006... 9.16 inches or 7.76 inches below normal.
Go to San Antonio daily data for June 2006.

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