Cedar Creek, Texas

... Heat advisory remains in effect until 7 PM CDT Friday...

A heat advisory remains in effect until 7 PM CDT Friday.

Overnight temperatures will slowly fall through the 80s... then
briefly dip into the mid and upper 70s around sunrise. Another
hot day is expected Friday with highs of 98 to 105. Heat index
values will be around 105 during the afternoon hours and may
briefly reach as high 110.

Precautionary/preparedness actions...

A heat advisory means very high temperatures and humidity will
create conditions that may cause heat exhaustion or heat stroke.
Drink plenty non-alcoholic fluids... stay in air conditioned
buildings... stay out of the sun... and check on relatives and
neighbors.

... Mid June to July 9th 2009 continues with hot afternoons...

The period from mid June through July 9... 2009 continues to show
hot afternoon highs averaging 5 to 10 degrees warmer than usual.
So far for the first 9 days of July this year the average daytime
highs have been around 100 to 103. Daily record highs were observed
today at Austin Bergstrom with 104... and the high of 105 at
Austin Mabry tied the record for July 9th of 105 in 1925. The high
of 104 at San Antonio was 1 degree below the record for July 9th of
105 in 1939... and the high of 106 at del Rio was 2 degrees below the
record high of 108 on July 9... 1939. Todays highs were around 10 to
12 degrees above usual for early July.

A brief stretch of hot afternoons showed up in early may.
So far this year since early may... Austin Mabry and del Rio have
had 23 100 degree days... San Antonio 19 100 degree days and
Austin Bergstrom 17 100 degree days. The hottest days so
far in 2009 were as follows... del Rio 107 may 6th... Austin Mabry
106 on June 25... June 29... and July 8... Austin Bergstrom 107 on June
25... and San Antonio 104 on June 29... July 5... July 8... and July 9.
The high of 107 at San Antonio Stinson field on July 5th was
the hottest day so far in 2009 at San Antonio Stinson field.

As hot afternoons continue this week... this will add to the
continued dryness across south central Texas.

The all time greatest number of 100 degree days in a calendar
year at Austin... del Rio... and San Antonio are listed below.

Del Rio... ... ... ... 72 in 2001
Austin Bergstrom... 50 in 1998
Austin Mabry... ... .69 in 1925
San Antonio... ... ..36 in 1998

The all time greatest number of 100 degree days in a row at
Austin... del Rio... and San Antonio are listed below.

Del Rio... ... ... ... 50 from June 17 to August 5... 1980
Austin Bergstrom... 23 from July 27 to August 18... 1951
Austin Mabry... ... .21 from July 12 to August 1... 2001
San Antonio... ... ..21 from July 24 to August 13... 1962

The month of June 2009 was the 2nd warmest June at Austin Mabry...
the 8th warmest at Austin Bergstrom... the 5th warmest June at
del Rio... and a tie for the 3rd warmest June at San Antonio with
June of 1998.