National Weather Service Text Product Display

Public Information Statement
Issued by NWS Houston/Galveston, TX
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NOUS44 KHGX 032307 CCA
PNSHGX

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
610 PM CDT JUN 3 2013

...RECORD COLD TEMPERATURES GREETED THE MONTH OF MAY...
...THIRD CONSECUTIVE MONTH WITH BELOW AVERAGE TEMPERATURES...

MAY 2013 STARTED OUT ON A VERY COLD NOTE. ON MAY 3RD...THE CITY OF
GALVESTON RECORDED A LOW TEMPERATURE OF 50 DEGREES. THIS WAS A DAILY
AND MONTHLY LOW TEMPERATURE RECORD THAT BESTED THE PREVIOUS MONTHLY
LOW RECORD OF 52 SET ON MAY 4TH OF 1954. THE CITY OF HOUSTON ALSO
ESTABLISHED THREE NEW DAILY MINIMUM TEMPERATURE RECORDS ON THE
3RD...4TH...AND 6TH...WITH A NEW MONTHLY MINIMUM TEMPERATURE RECORD
OF 42 SET ON MAY 4TH. THE 42 DEGREES RECORDED ON THE 4TH IS NOW THE
COLDEST TEMPERATURE EVER RECORDED IN THE MONTH OF MAY FOR THE CITY
OF HOUSTON. COLLEGE STATION ALSO RECORDED THREE NEW DAILY
TEMPERATURE RECORDS ON THE 3RD...4TH...AND 6TH. COLLEGE STATION ALSO
TIED THE COLDEST TEMPERATURE FOR THE MONTH OF MAY WHEN THE
TEMPERATURE DROPPED TO 42 DEGREES ON THE 4TH.

THE MONTH OF MAY IS THE THIRD CONSECUTIVE MONTH IN 2013 WITH BELOW
NORMAL TEMPERATURES FOR THE CITIES OF HOUSTON AND COLLEGE STATION.
WHEN WAS THE LAST TIME THIS PHENOMENA OCCURRED? IT ACTUALLY HAPPENED
RATHER RECENTLY DURING THE WINTER OF 2009 AND 2010...OR MORE
SPECIFICALLY THE MONTHS OF DECEMBER 2009...JANUARY 2010...FEBRUARY
2010...AND MARCH 2010. SO HOW COLD HAS IT BEEN OVER THE LAST THREE
MONTHS? THE CITY OF HOUSTON HAD AN AVERAGE TEMPERATURE OF 67.8
DEGREES WHICH IS THE 30TH COOLEST CLIMATOLOGICAL SPRING IN HISTORY
OF THE CITY. THE COOLEST MARCH THROUGH MAY WAS 64.3 DEGREES IN 1931.

THE FOLLOWING TABLE LISTS THE TOP 30 COOLEST AVERAGE TEMPERATURES FOR
MARCH THROUGH MAY FOR THE CITY OF HOUSTON.


RANK     VALUE    YEAR          RANK     VALUE    YEAR

  1       64.3    1931           16      67.2     1969
  2       65.3    1983           17      67.3     1947
  3       65.7    1915           18      67.4     1977
  4       65.9    1926           19      67.5*    1988
  5       66.0*   1895           20      67.5     1912
  6       66.0    1970           21      67.6*    1932
  7       66.7*   1971           22      67.6     1928
  8       66.7    1976           23      67.6     1937
  9       66.8    1993           24      67.6     1892
 10       66.9    1913           25      67.7*    1917
 11       67.0*   1978           26      67.7     1997
 12       67.0    1973           27      67.7     1898
 13       67.1*   1914           28      67.7     1987
 14       67.1    1952           29      67.7     1960
 15       67.2*   1924           30      67.8     2013


* NOTE...THESE RECORDS ARE TIED WITH AT LEAST ONE OTHER PREVIOUS
YEAR.

THE FOLLOWING TABLE LISTS THE DEPARTURES FROM NORMAL OF THE AVERAGE
TEMPERATURES FOR THE FOUR FIRST-ORDER CLIMATE STATIONS.


STN    MAY 2013   APR 2013   MAR 2013

CLL      -1.8       -2.1       -0.9
IAH      -1.9       -2.9       -1.5
HOU      -2.1       -2.0       -0.8
GLS      -3.2       -2.3       +0.3


THE FOLLOWING TABLE SHOWS THE LAST TIME THERE WERE THREE MONTHS OF
BELOW NORMAL TEMPERATURES OF -0.5 DEGREES OR MORE.


STN    DATES

CLL    DEC 2009 - MAR 2010
IAH    DEC 2009 - MAR 2010
HOU    DEC 2009 - MAR 2010
GLS*   NOV 2010 - FEB 2011


* NOTE...GLS ONLY HAD TWO CONSECUTIVE MONTHS OF BELOW NORMAL AVERAGE
TEMPERATURES DURING THIS PERIOD.

POSSIBLY HOW MUCH RAINFALL HAS REPLENISHED AREA RESERVOIRS IN
SOUTHEAST TEXAS? THE FOLLOWING TABLE LISTS DATA FROM
HTTP://WWW.WATERDATAFORTEXAS.ORG/RESERVOIRS/STATEWIDE.


RESERVOIR               DATE AND PERCENTAGE FULL

HOUSTON COUNTY LAKE     MAY 30TH - 98.1 PERCENT FULL
                        APR 30TH - 99.3 PERCENT FULL

LAKE LIVINGSTON         MAY 30TH - 100 PERCENT FULL
                        APR 30TH - 100 PERCENT FULL

LAKE CONROE             MAY 30TH - 88.8 PERCENT FULL
                        APR 30TH - 85.1 PERCENT FULL

LAKE SOMERVILLE         MAY 30TH - 85.0 PERCENT FULL
                        APR 30TH - 85.1 PERCENT FULL

LAKE HOUSTON            MAY 30TH - 100 PERCENT FULL
                        APR 30TH - 100 PERCENT FULL


THE FOLLOWING TABLE LISTS THE ALL TIME RECORD LOWS FOR MAY FOR THE
CITIES OF GALVESTON...HOUSTON...AND COLLEGE STATION. NOTE THAT THE
STATION IDENTIFIER IS USED TO REPRESENT PREVIOUS CITY SITES AS WELL.


...ALL TIME RECORD LOWS FOR MAY...
SITE     OLD RECORD     NEW RECORD

CLL      42 IN 1954     42 IN 2013
IAH      44 IN 1978     42 IN 2013
GLS      52 IN 1903     50 IN 2013


THREE RECORD LOWS WERE SET IN THE MONTH OF MAY FOR THE CITY OF
HOUSTON WHILE FOUR RECORD LOWS WERE SET AT COLLEGE STATION IN THE
MONTH OF MAY. THE FOLLOWING TABLE SHOWS THE LAST TIME AT LEAST
THREE RECORD LOWS WERE SET FOR ONE MONTH AT BOTH IAH AND CLL.


SITE      YEAR      DATES

CLL       2002      MAR 4 - 6
IAH*      2004      AUG 13 - 16


* NOTE THAT FOUR RECORD LOWS HAVE BEEN SET SO FAR THIS YEAR AT IAH.
THE LAST TIME THIS OCCURRED WAS IN 2004 AND 2000.

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
MAY.


SITE      AVG       AVG       AVG        DEP      RAIN       DEP
          HIGH      LOW       MONTH

IAH       85.0      66.0      75.5      -1.4      1.02      -4.07
GLS       79.9      69.5      74.7      -2.9      1.12      -3.20
CLL       85.3      64.4      74.8      -1.4      6.73      +2.40
HOU       83.5      67.2      75.4      -1.6      2.96      -1.79
CXO       84.2      61.4      72.8      -1.6      2.50      -2.42
UTS       84.5      63.7      74.1      -2.0      7.28      +2.74
DWH       84.9      64.5      74.7      -1.1      1.00      -3.77
SGR       84.5      66.1      75.3      -1.1      2.76      -1.87
LBX       82.9      65.2      74.0      -1.5      0.97      -3.06
PSX       83.8      70.0      76.9      -0.2      0.55      -3.66
LVJ       82.3      66.0      74.2      -1.9      1.90      -2.64
HGX       82.2      66.1      74.1      -1.0      2.14      -2.51

A MORE COMPLETE CLIMATE SUMMARY FOR APRIL 2013 WILL BE ISSUED BY
JUNE 7TH. AT THAT TIME...TEMPERATURES AND RAINFALL FOR THE CO-OP
OBSERVERS WILL BE INCLUDED.

$$
National Weather Service Weather Forecast Office
