PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1010 AM CDT SAT JUN 27 2009 ...HOT TEMPERATURES PERSIST ACROSS SOUTHEAST TEXAS... TRIPLE DIGIT HEAT HAS PLAGUED MUCH OF SOUTHEAST TEXAS OVER THE LAST WEEK. THE MONTH IS NOT OVER YET...SO MUCH CAN CHANGE. AT THE CURRENT TIME...HOUSTON IS SUFFERING THROUGH IT`S 4TH WARMEST JUNE. AT HOBBY AIRPORT...THIS IS ALSO THE 4TH WARMEST JUNE. GALVESTON IS ENDURING IT`S 8TH WARMEST JUNE AND COLLEGE STATION IS ENDURING IT`S 4TH WARMEST JUNE. TO PUT THIS IN PERSPECTIVE... THE FIRST SEVEN DAYS OF JUNE WERE COOLER THAN NORMAL SO THE INTENSE HEAT OVER THE LAST 19 DAYS HAS MADE UP THE TEMPERATURE DEFICIT WITH CHANGE TO SPARE. THIS LATEST HEATWAVE SHOWS NO SIGN OF RELENTING SO THE MONTHLY AVERAGE TEMPERATURE WILL LIKELY INCREASE. 2009 AVG TEMP WARMEST AVG TEMP (ENTIRE MONTH) IAH 84.5 4TH WARMEST 85.9 IN 1906 HOU 83.8 4TH WARMEST 86.2 IN 1998 GLS 83.7 8TH WARMEST 85.1 IN 1881 CLL 85.5 4TH WARMEST 86.7 IN 1998 THE TEMPERATURE CLIMBED TO 104 DEGREES AT INTERCONTINENTAL AIRPORT ON JUNE 24TH AND AGAIN ON THE 26TH. THIS IS THE WARMEST TEMPERATURE EVER RECORDED IN THE MONTH OF JUNE AND IS ALSO A NEW DAILY TEMPERATURE RECORD. THE LAST TIME THE MERCURY SOARED TO 104 DEGREES WAS ON AUGUST 7TH 2003. THE LAST TIME HOUSTON RECORDED 4 CONSECUTIVE 100 DEGREE DAYS WAS SEPTEMBER 2 THROUGH SEPTEMBER 6 2000. THE LAST TIME 4 CONSECUTIVE DAYS BREACHED 100 DEGREES IN JUNE WAS JUNE 25TH THROUGH JUNE 30 1980 (6 CONSECUTIVE DAYS). THE FIRST SEVEN DAYS OF THE MONTH CONTAINED BELOW NORMAL TEMPERATURES. THIS HEATWAVE BEGAN IN EARNEST AROUND JUNE 9TH. THE AVERAGE HIGH TEMPERATURE IN HOUSTON DURING THIS HEATWAVE HAS BEEN 98.5 DEGREES WHICH IS THE SECOND WARMEST IN CITY HISTORY. THE WARMEST AVERAGE HIGH TEMPERATURE FROM JUNE 9TH THROUGH THE 26TH WAS 99.1 DEGREES BACK IN 1902. BELOW IS A LIST OF HOUSTON WARMEST MAXIMUM TEMPERATURE AND WARMEST MINIMUM TEMPERATURES FOR JUNE: MAXIMUM TEMP MINIMUM TEMP 96.3 IN 1980 76.1 IN 1906 96.2 IN 1902 76.0 IN 1953 96.1 IN 2009 75.9 IN 1998 95.7 IN 1906 75.9 IN 1958 95.3 IN 1990 75.7 IN 1965 95.1 IN 1998 75.3 IN 1944 95.1 IN 2008 75.1 IN 1963 94.3 IN 1890 75.0 IN 1964 93.8 IN 1911 75.0 IN 1962 93.5 IN 2005 74.8 IN 1981 73.8 IN 2009 THE TEMPERATURE IN HOUSTON HAS REACHED OR EXCEEDED 100 DEGREES 39 TIMES IN THE MONTH OF JUNE (THROUGH JUNE 26 2009). THERE WERE 10 DAYS IN 1902 WHERE THE TEMPERATURE REACHED OR EXCEEDED 100 DEGREES. BACK IN 1980...THERE WERE 8 DAYS THAT REACHED OR EXCEEDED 100 DEGREES. MORE MISCELLANEOUS TRIVIA...THERE WERE 7 CONSECUTIVE DAYS WITH 100 DEGREE HEAT IN 1902 AND 6 CONSECUTIVE DAYS IN 1980. THE LONGEST STRETCH OF CONSECUTIVE 100 DEGREE DAYS OCCURRED BACK IN 1980. THE TEMPERATURE REACHED OR EXCEEDED 100 DEGREES FOR 14 CONSECUTIVE DAYS BETWEEN JULY 6 1980 AND JULY 19 1980. THE TEMPERATURE ALSO REACHED 100 DEGREES OR GREATER FOR 11 STRAIGHT DAYS BETWEEN JULY 26 1998 AND AUGUST 5 1998. HOUSTON - NUMBER OF 100 DEGREE DAYS IN JUNE 10 IN 1902 (7 IN A ROW) 8 IN 1980 (6 IN A ROW) 4 IN 1906 2 IN 1998 2 IN 1934 2 IN 1930 2 IN 1911 HOUSTON - NUMBER OF CONSECUTIVE 100 DEGREE DAYS (ALL TIME) 14 07/06/1980 THROUGH 07/19/1980 11 07/26/1998 THROUGH 08/05/1998 9 06/25/1980 THROUGH 07/03/1980 8 08/29/2000 THROUGH 09/05/2000* 8 08/14/1993 THROUGH 08/21/1993 8 08/07/1962 THROUGH 08/14/1962 * ALL TIME RECORD HIGH TEMPERATURE FOR HOUSTON OCCURRED DURING THIS STRING OFF 100 DEGREE DAYS. THE HIGH TEMPERATURE REACHED 109 DEGREES ON SEPTEMBER 4TH 2000. SO IT`S BEEN HOT!! BUT IT HAS ALSO BEEN DRY! HOW DRY? HOUSTON INTERCONTINENTAL AIRPORT ENDURED 31 CONSECUTIVE DAYS WITHOUT MEASURABLE RAIN. A THUNDERSTORM PRODUCED 0.27 INCHES OF RAIN ON THE EVENING OF THE 25TH. THE DRIEST STRETCH OF WEATHER EVER RECORDED FOR HOUSTON WAS BACK IN 1904. THERE WAS NO MEASURABLE RAIN BETWEEN JANUARY 8 1904 AND FEBRUARY 16 1904 - 40 DAYS! BELOW IS A TABLE WITH THE DRIEST PERIODS ON RECORD DATE NUMBER OF DRY DAYS 01/08/1904 - 02/17/1904 40 09/11/1917 - 10/17/1917 37 09/20/1963 - 10/25/1963 36 05/01/1937 - 06/03/1937 34 09/22/1978 - 10/24/1978 33 04/25/2009 - 06/24/2009 31* * THIS TIES FOR THE 12TH LONGEST PERIOD WITHOUT MEASURABLE RAIN. THE LAST TIME HOUSTON WENT 31 DAYS WITHOUT RAIN WAS FROM JULY 31 1990 THROUGH AUGUST 30 1990. THE PERIOD MAY 1 2009 THROUGH JUNE 26 2009 IS NOW THE DRIEST PERIOD IN HOUSTON WEATHER HISTORY. A PALTRY 0.65 INCHES OF RAIN HAS FALLEN OVER THE LAST 57 DAYS. THE NORMAL RAINFALL FOR THIS PERIOD IS 9.91 INCHES OR ROUGHLY 7 PERCENT OF NORMAL. BELOW IS A TABLE WITH THE FIVE DRIEST PERIODS (MAY 1 THROUGH JUNE 26): 0.65 IN 2009 0.83 IN 1931 1.36 IN 1906 1.72 IN 1901 1.78 IN 1915 OTHER COMMUNITIES ACROSS SOUTHEAST TEXAS HAVE SUFFERED A SIMILAR FATE. COLLEGE STATION...HUNTSVILLE AND CONROE HAVE NOT RECORDED MEASURABLE RAINFALL DURING JUNE. ANGLETON...BAY CITY AND EDNA HAVE YET TO RECEIVE 10 INCHES OF RAIN THIS YEAR. EXTREME TO EXCEPTIONAL DROUGHT CONDITIONS ARE AFFECTING PARTS OF JACKSON...MATAGORDA... AND BRAZORIA COUNTIES. MAY AND JUNE ARE TYPICALLY TWO OF THE WETTEST MONTHS OF THE YEAR SO THIS BUILDING DROUGHT IS OF GREAT CONCERN. 2009 RAINFALL ANNUAL DEPARTURE MAY/JUNE 2009 IAH 17.12 -6.41 0.65 HOU 21.27 -3.78 1.59 GLS 10.86 -8.39 0.51 CLL 13.97 -6.24 1.41 IF ACCUMULATING RAIN DOES NOT FALL AT INTERCONTINENTAL AIRPORT THROUGH JUNE 26TH...IT WILL BE THE DRIEST PERIOD IN HISTORY. IF ADDITIONAL RAIN DOES NOT FALL BY THE END OF THE MONTH...THIS WILL BE THE DRIEST MAY/JUNE RAINFALL TOTAL IN RECORDED HISTORY. HERE ARE THE FIVE DRIEST MAY/JUNE IN RECORDED HISTORY: MAY/JUNE RAIN * 0.65 IN 2009 (THROUGH JUNE 26) 0.98 IN 1931 1.78 IN 1915 1.82 IN 1934 1.87 IN 1901 1.96 IN 1906 LONG RANGE MODELS ARE HINTING AT A PATTERN CHANGE IN JULY. TIME WILL TELL IF THIS IS CORRECT. IF THE RIDGE SHIFTS WEST...LOWER TEMPERATURES AND DIURNALLY DRIVEN SHOWERS AND THUNDERSTORMS SHOULD AGAIN DEVELOP. A WEAK FRONT IS CURRENTLY PROGGED TO ENTER SOUTHEAST TEXAS ON TUESDAY THE 30TH. THIS FEATURE SHOULD BRING AT LEAST A SLIGHT CHANCE OF PRECIPITATION TUESDAY AND WEDNESDAY. $$ CR