PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1009 PM EST SUN JAN 1 2012

...DECEMBER 2011 WAS WARMER THAN NORMAL WITH EXTREME VARIATIONS IN
PRECIPITATION ACROSS EAST CENTRAL FLORIDA...

THE WEATHER PATTERN REMAINED FAIRLY BENIGN THROUGHOUT THE ENTIRE
MONTH OF DECEMBER AS HIGH PRESSURE REMAINED POSITIONED OVER THE
EASTERN UNITED STATES FOR MUCH OF THE TIME. TWO DISTURBANCES
PROVIDED FOR ESSENTIALLY ALL OF THE MEASURABLE PRECIPITATION ACROSS
EAST CENTRAL FLORIDA. MOSTLY SUNNY SKIES AND A GOOD DEAL OF ONSHORE
FLOW ALONG WITH INFREQUENT FRONTAL PASSAGES ACTED TO BOOST
TEMPERATURES ABOVE NORMAL FOR THE MONTH AND PROVIDE FOR VARIABLE
PRECIPITATION COVERAGE.

.TEMPERATURES...

DECEMBER 2011 BEGAN WITH HIGH PRESSURE MOVING ACROSS THE EASTERN
UNITED STATES. THIS LED TO NEAR NORMAL TEMPERATURES FOR THE FIRST
COUPLE OF DAYS OF THE MONTH...BUT ONSHORE FLOW QUICKLY DEVELOPED AND
CAUSED TEMPERATURES TO RUN ABOVE NORMAL. A COLD FRONT PUSHED ACROSS
EAST CENTRAL  FLORIDA AT THE BEGINNING OF THE SECOND WEEK OF THE
MONTH...COOLING TEMPERATURES BELOW NORMAL FOR A SHORT PERIOD.
HOWEVER...THEY ONCE AGAIN ROSE ABOVE NORMAL AS ONSHORE FLOW
DEVELOPED DUE TO HIGH PRESSURE POSITIONING ITSELF ACROSS THE EASTERN
PORTION OF THE COUNTRY.

A COLD FRONT ONCE AGAIN COOLED TEMPERATURES BRIEFLY TOWARD THE
MIDDLE OF THE MONTH BEFORE HIGH PRESSURE ONCE AGAIN TOOK HOLD ON THE
AREA. UNSEASONABLY WARM TEMPERATURES PERSISTED THROUGH CHRISTMAS AS
SOUTHERLY FLOW OCCURRED ACROSS THE AREA. ORLANDO BROKE A RECORD
HIGH...REACHING 85 DEGREES ON DECEMBER 23. ONE FINAL COLD FRONT
PLOWED THROUGH EAST CENTRAL FLORIDA DURING THE FINAL WEEK OF THE
MONTH...USHERING IN THE COLDEST AIR IN DECEMBER BEFORE TEMPERATURES
ONCE AGAIN REBOUNDED TO ABOVE NORMAL TO ROUND OUT THE MONTH.

MONTHLY AVERAGE TEMPERATURES RANGED FROM AROUND 3 TO 5 DEGREES ABOVE
NORMAL FOR THE MONTH. BOTH MELBOURNE AND VERO BEACH RANKED IN THE
TOP 10 WARMEST DECEMBERS ON RECORD.

THE AVERAGE TEMPERATURE VALUES FOR DECEMBER AT THE FOUR MAIN CLIMATE
SITES ACROSS EAST CENTRAL FLORIDA ARE AS FOLLOWS (RANKINGS PROVIDED
IF IN THE TOP 10):

-DAYTONA BEACH HAD AN AVERAGE MONTHLY TEMPERATURE OF 64.6 DEGREES
FAHRENHEIT, WHICH WAS 4.1 DEGREES ABOVE NORMAL.

-ORLANDO HAD AN AVERAGE MONTHLY TEMPERATURE OF 65.8 DEGREES
FAHRENHEIT, WHICH WAS 3.2 DEGREES ABOVE NORMAL.

-MELBOURNE HAD AN AVERAGE MONTHLY TEMPERATURE OF 67.7 DEGREES
FAHRENHEIT, WHICH WAS 4.7 DEGREES ABOVE NORMAL. THIS TIES 1946 FOR
THE 8TH WARMEST DECEMBER ON RECORD FOR THIS SITE.

-VERO BEACH HAD AN AVERAGE MONTHLY TEMPERATURE OF 69.3 DEGREES
FAHRENHEIT, WHICH WAS 4.7 DEGREES ABOVE NORMAL. THIS TIES 1971 FOR
THE 3RD WARMEST DECEMBER ON RECORD FOR THIS SITE.


.RAINFALL...

HIGH PRESSURE DOMINATED EAST CENTRAL FLORIDA FOR THE FIRST WEEK OF
THE MONTH...LEADING TO MAINLY DRY CONDITIONS EXCEPT FOR ISOLATED
COASTAL SHOWERS AS A RESULT OF ONSHORE FLOW. A LINGERING FRONT MOVED
THROUGH DURING THE BEGINNING OF THE SECOND WEEK OF DECEMBER...
PROVIDING MUCH OF THE RAINFALL FOR THE MONTH. PORTIONS OF THE
SOUTHERN TREASURE COAST EXPERIENCED HEAVY RAIN AND FLOODING EARLY ON
DECEMBER 10.

DRY CONDITIONS PREVAILED THROUGHOUT MUCH OF THE REMAINDER OF THE
MONTH DUE TO HIGH PRESSURE SITTING ACROSS THE EASTERN UNITED STATES
AND THE LACK OF STRONG FRONTAL SYSTEMS. LIGHT COASTAL SHOWERS DID
OCCUR...BUT LITTLE MEASURABLE RAINFALL RESULTED. A STALLED FRONTAL
SYSTEM BROUGHT THE FINAL APPRECIABLE RAINFALL FOR THE MONTH LATE ON
CHRISTMAS DAY AND THE FOLLOWING COUPLE OF DAYS...BEFORE A COOLER AND
DRIER AIRMASS SETTLED IN ACROSS THE AREA.

DECEMBER 2011 RAINFALL TOTALS FOR THE FOUR MAIN CLIMATE SITES ACROSS
EAST CENTRAL FLORIDA ARE AS FOLLOWS (RANKINGS PROVIDED IF IN THE TOP
10):

-DAYTONA BEACH RECEIVED 3.08 INCHES OF RAINFALL FOR THE MONTH, WHICH
WAS 0.45 INCHES ABOVE NORMAL.

-ORLANDO RECEIVED 0.80 INCHES OF RAINFALL FOR THE MONTH, WHICH WAS
1.78 INCHES BELOW NORMAL.

-MELBOURNE RECEIVED 3.29 INCHES OF RAINFALL FOR THE MONTH, WHICH WAS
0.72 INCHES ABOVE NORMAL.

-VERO BEACH RECEIVED 4.29 INCHES OF RAINFALL FOR THE MONTH, WHICH
WAS 2.10 INCHES ABOVE NORMAL.

BELOW IS A LIST OF OBSERVED PRECIPITATION TOTALS AND RAINFALL
STATISTICS FOR SELECT SITES ACROSS EAST CENTRAL FLORIDA FOR DECEMBER
2011:

STATION      DECEMBER 2011     30 YEAR      DEPARTURE    PERCENT OF
                RAINFALL       NORMAL      FROM NORMAL     NORMAL

DAYTONA BEACH    3.08"          2.63"         0.45"         117%
(DAB)
ORLANDO          0.80"          2.58"        -1.78"          31%
(MCO)
MELBOURNE        3.29"          2.57"         0.72"         128%
(MLB)
VERO BEACH       4.29"          2.19"         2.10"         196%
(VRB)
CLERMONT         0.06"          2.89"        -2.83"           2%
(CLRF1)
DELAND           1.07"          2.82"        -1.75"          38%
(DELF1)
SANFORD          0.66"          2.58"        -1.92"          26%
(SFNF1)
TITUSVILLE       0.46"          2.56"        -2.10"          18%
(TITF1)
FORT PIERCE      4.07"          2.13"         1.94"         191%
(FPCF1)
STUART           6.81"          2.90"         3.91"         235%
(STRF1)

FOR MORE LOCAL INFORMATION, PLEASE VISIT OUR WEB PAGE AT
HTTP://WEATHER.GOV/MELBOURNE AND CLICK ON THE "LOCAL" LINK UNDER
THE CLIMATE SUBSECTION ON THE LEFT SIDE OF THE PAGE.

$$

GUSEMAN

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