PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
237 PM CDT THU OCT 04 2012
...A MOSTLY WARM AND DRY SEPTEMBER CONTRASTED WITH A FEW COOL AND
RAINY PERIODS...
THE SUMMER PATTERN CONTINUED ITS TRANSITION TO AUTUMN ACROSS
SOUTHEAST TEXAS DURING THE MONTH OF SEPTEMBER. THE SUBTROPICAL RIDGE
THAT HAD RETREATED OUT OF THE STATE BACK IN AUGUST MADE A COUPLE OF
RETURN VISITS AND BROUGHT TWO HOT AND DRY PERIODS. HOWEVER...A
SERIES OF COLD AND WARM FRONTS PLUS A COUPLE OF STORM SYSTEMS DID
PROVIDE SOME RAINFALL. SEPTEMBER BEGAN VERY HOT AND MOSTLY DRY EVEN
WITH ISOLATED SHOWERS MOVING OVER THE AREA DUE TO ONSHORE FLOW OFF
THE GULF OF MEXICO. THE HEAT COMPOUNDED THE OVERALL DRY CONDITIONS
AND DAYTIME HIGH TEMPERATURES EVEN REACHED TO AROUND 100 AT COLLEGE
STATION. LIMITED RAINFALL ARRIVED WITH A COLD FRONT THAT MOVED OFF
THE COAST ON THE 8TH...A WARM FRONT ON THE 12TH...A COLD FRONT ON
THE 13TH AND 14TH...AND AN OFFSHORE STORM SYSTEM THAT MOVED UP THE
COAST ON THE 16TH AND 17TH. HIGH PRESSURE THEN RETURNED A PERIOD OF
WARM AND DRY WEATHER FOR MUCH OF THE NEXT TWO WEEKS. AT THE END OF
THE MONTH A STORM SYSTEM MOVING ACROSS THE STATE TAPPED INTO
TROPICAL MOISTURE FROM THE REMNANTS OF HURRICANE MIRIAM NEAR BAJA
CALIFORNIA. THIS RESULTED IN COOLER WEATHER AND MUCH NEEDED
WIDESPREAD RAINFALL FROM THE 28TH TO THE 30TH.
CONCERNING DETAILS...SEPTEMBER 2012 WAS COOLER THAN LAST YEAR FOR
ALL THE MAJOR CLIMATE SITES. GALVESTON AND COLLEGE STATION WERE
ABOVE NORMAL FOR THE MONTH WHILE THE CITY OF HOUSTON AND HOBBY WERE
BOTH BELOW NORMAL. THANKS TO A COOLER MONTH COMPARED TO LAST YEAR...
2012 IS NOW THE SECOND WARMEST YEAR ON RECORD FOR COLLEGE STATION
AND HOUSTON HOBBY...WHILE 2012 IS TIED WITH 2011 FOR THE WARMEST
YEAR ON RECORD FOR THE CITY OF HOUSTON. 2012 IS STILL THE WARMEST
YEAR ON RECORD FOR THE CITY OF GALVESTON.
THE FOLLOWING TABLE DESCRIBES THE FIVE WARMEST YEAR-TO-DATE AVERAGE
TEMPERATURES FOR THE FOUR FIRST ORDER CLIMATE SITES IN THE AREA.
JANUARY 1 THROUGH SEPTEMBER 30
CITY OF HOUSTON CITY OF COLLEGE
HOUSTON HOBBY GALVESTON STATION
74.9 2012 75.2 2011 76.2 2012 75.0 2011
74.9 2011 75.1 2012 74.9 2000 74.5 2012
74.4 1911 74.8 1998 74.8 2006 74.5 1911
74.3 1962 74.7 2000 74.5 2011 73.7 2009
73.8 2009 74.2 1999 74.1 1995 73.6 1925
THIS TABLE SHOWS THAT THE MONTH OF SEPTEMBER CONTINUED A TREND OF
FEWER 100 DEGREE DAYS FOR THE YEAR-TO-DATE THAN BACK IN 2011.
SITE JUN JUN JUL JUL AUG AUG SEP SEP
2011 2012 2011 2012 2011 2012 2011 2012
CITY OF HOUSTON 7 3 4 0 30 0 5 0
HOUSTON HOBBY 2 3 0 0 15 0 1 0
COLLEGE STATION 10 5 18 2 30 13 11 4
CITY OF GALVESTON 0 1 0 0 1 0 0 0
AN INTERESTING CONTRAST BETWEEN 2011 AND 2012 CAN ALSO BE SEEN IN A
TABLE OF THE NUMBER OF DAYS WITH HIGH TEMPERATURES LESS THAN 90
DEGREES.
SITE JUN JUN JUL JUL AUG AUG SEP SEP
2011 2012 2011 2012 2011 2012 2011 2012
CITY OF HOUSTON 1 5 1 9 0 1 3 15
HOUSTON HOBBY 1 5 1 10 0 3 3 21
COLLEGE STATION 1 1 0 4 0 2 2 9
CITY OF GALVESTON 5 19 1 11 1 5 17 22
COMPARING SEPTEMBER HIGH AND LOW TEMPERATURES BETWEEN 2012 AND 2011
ALSO IS WORTH MENTIONING.
SITE HIGH HIGH NORMAL LOW LOW NORMAL
2011 2012 HIGH 2011 2012 LOW
CITY OF HOUSTON 95.5 89.7 89.7 70.2 69.7 69.8
HOUSTON HOBBY 93.9 88.2 88.4 71.8 70.5 71.7
COLLEGE STATION 96.7 92.0 90.5 70.0 69.8 69.4
CITY OF GALVESTON 88.9 87.3 87.4 76.3 76.9 75.9
NOW FOR THE GENERAL MONTHLY CLIMATE DATA...THE FOLLOWING TABLE LISTS
THE MONTHLY CLIMATE DATA FOR THE FIRST AND SECOND ORDER CLIMATE
SITES IN THE NWS HOUSTON/GALVESTON COUNTY WARNING AREA FOR THE MONTH
OF SEPTEMBER.
SITE AVG AVG AVG DEP RAIN DEP
HIGH LOW MONTH
IAH 89.7 69.7 79.7 -0.1 2.02 -2.10
HOU 88.2 70.5 79.3 -0.8 3.98 -1.23
GLS 87.3 76.9 82.1 +0.5 5.63 -0.40
CLL 92.0 69.8 80.9 +0.9 3.22 +0.04
CXO 89.7 65.1 77.4 0.0 4.13 +0.29
UTS 90.1 68.1 79.1 +0.9 5.65 +1.94
PSX 90.1 73.4 81.8 +1.8 4.87 -0.26
LBX 89.2 67.6 78.4 -0.1 2.05 -3.93
LVJ 89.2 70.9 80.1 +1.0 3.63 -1.63
SGR 90.4 69.2 79.8 +0.9 3.65 -0.87
DWH 89.7 67.0 78.3 +0.3 4.46 -0.11
HGX 88.6 69.7 79.2 +1.3 3.79 -3.98
HERE ARE SOME SEPTEMBER TEMPERATURE AND RAINFALL TOTALS AVAILABLE
FROM OUR NETWORK OF CO-OP OBSERVERS AS OF OCTOBER 4TH.
LOCATION RAINFALL AVERAGE HIGH AVERAGE LOW
(INCHES) TEMPERATURE TEMPERATURE
ANAHUAC 3.55 87.0 69.3
BAY CITY 5.59 87.9 69.4
BAYTOWN 2.85 88.3 69.9
BELLVILLE 4.17 89.7 67.2
BRENHAM 2.73 89.3 67.4
CLEVELAND 2.17 89.5 64.8
CONROE 2.53 89.2 68.9
CROCKETT 10.87 92.0 66.4
DANEVANG 5.23 88.7 67.0
FREEPORT 4.40 89.1 74.3
HUNTSVILLE 6.21 88.3 68.2
LIVINGSTON 4.67 90.3 66.4
WASH ST PARK 3.01 92.8 65.1
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