NOUS42 KMLB 021400
PNSMLB
FLZ041-044>047-053-054-058-059-064-141-144-147-040000-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
950 AM EDT THU SEP 2 2010
...AUGUST 2010 CONTINUED THE ABOVE NORMAL SUMMER WARMTH WITH MORE
WIDESPREAD AND NEAR NORMAL RAINFALL AMOUNTS ACROSS EAST CENTRAL
FLORIDA...
THE VARIANCE IN THE POSITION OF THE ATLANTIC HIGH PRESSURE RIDGE
DROVE A MORE UNIFORM COVERAGE OF RAINFALL ACROSS THE AREA. FEEDBACKS
FROM AN UPPER-LEVEL HIGH PRESSURE RIDGE AND ABUNDANT MOISTURE NEAR
THE SURFACE HELPED TO KEEP AVERAGE TEMPERATURES WARMER THAN NORMAL
DURING AUGUST.
.TEMPERATURES...
A FRONTAL BOUNDARY WAS POSITIONED OVER NORTHERN FLORIDA AT THE
BEGINNING OF THE MONTH...AND THIS ACTED TO KEEP THE AREA IN A
PREDOMINANT SOUTHWESTERLY FLOW AS THE FRONT LIFTED TO THE NORTH.
MAXIMUM TEMPERATURES BEGAN THE MONTH IN THE MID TO UPPER
90S...BEFORE DROPPING INTO THE LOW TO MID 90S AS A RESULT OF THIS
REINFORCEMENT OF WARM AIR MAKING ITS WAY ACROSS THE PENINSULA.
TEMPERATURES REMAINED ABOVE NORMAL FOR MOST OF THE MONTH ACROSS THE
AREA...AS SHOWN BY ALL FOUR CLIMATE SITES IN EAST CENTRAL
FLORIDA...BREAKING THE TOP 5 FOR WARMEST AVERAGE TEMPERATURE IN
AUGUST. VERO BEACH BROKE THEIR RECORD WARM AVERAGE MONTHLY
TEMPERATURE AT 83.6 DEGREES. AVERAGE MONTHLY TEMPERATURES ACROSS THE
AREA ENDED UP AROUND 1.5 TO 2.5 DEGREES ABOVE NORMAL. HOWEVER IT WAS
NOT THE DAYTIME TEMPERATURES THAT WERE SO EXTREME...BUT THE
UNSEASONABLY WARM OVERNIGHT LOWS THAT CONTRIBUTED TO THESE ABOVE
AVERAGE VALUES.
AN AVERAGE SOUTHWARD PLACEMENT OF THE ATLANTIC HIGH PRESSURE RIDGE
AXIS PROVIDED A MORE PERSISTENT SOUTHERLY TO SOUTHWESTERLY FLOW
ACROSS EAST CENTRAL FLORIDA. HOWEVER...THE FLOW DID PERIODICALLY
BECOME EASTERLY AS THE HIGH PRESSURE AXIS FLUCTUATED TO THE NORTH ON
OCCASION. THE PLETHORA OF MOISTURE IN THE LOW LEVELS OF THE
ATMOSPHERE KEPT NIGHTTIME TEMPERATURES ABOVE NORMAL...AS SEVERAL
RECORD WARM LOW TEMPERATURES WERE EITHER TIED OR BROKEN. THE
GREATEST NUMBER OF THESE OCCURRED AT DAYTONA BEACH WITH A TOTAL OF 7
HIGHEST LOW RECORDS SET OR TIED. THE AVERAGE MONTHLY MINIMUM
TEMPERATURE WAS THE HIGHEST ON RECORD FOR BOTH DAYTONA BEACH AND
MELBOURNE AT 76.1 AND 76.5 DEGREES FAHRENHEIT RESPECTIVELY. FURTHER
INLAND ORLANDO HAD THE 2ND WARMEST AVERAGE MONTHLY LOW TEMPERATURE
WITH A VALUE OF 75.7 DEGREES FAHRENHEIT. VERO BEACH SET THEIR 3RD
HIGHEST AVERAGE MONTHLY MINIMUM TEMPERATURE AT 75.2 DEGREES
FAHRENHEIT.
OVERALL...DAYTONA BEACH HAD AN AVERAGE MONTHLY TEMPERATURE OF 83.3
DEGREES FAHRENHEIT WHICH WAS 1.8 DEGREES ABOVE NORMAL. THIS MADE FOR
THE 4TH WARMEST AUGUST ON RECORD AT THIS SITE. ORLANDO HAD AN
AVERAGE MONTHLY TEMPERATURE OF 83.9 DEGREES FAHRENHEIT WHICH WAS 1.4
DEGREES ABOVE NORMAL AND RANKED THE MONTH AS THE 4TH WARMEST ON
RECORD. MELBOURNE HAD THEIR 2ND WARMEST AUGUST ON RECORD WITH AN
AVERAGE MONTHLY TEMPERATURE OF 83.8 DEGREES FAHRENHEIT WHICH WAS 2.4
DEGREES ABOVE NORMAL. VERO BEACH HAD THEIR WARMEST AUGUST EVER
RECORDED WITH AN AVERAGE TEMPERATURE OF 83.6 DEGREES FAHRENHEIT
WHICH WAS 2.0 DEGREES ABOVE AVERAGE.
TOP 5 WARMEST AUGUST AVERAGE TEMPERATURE RANKINGS IN DEGREES
FAHRENHEIT AND LAST YEAR SET:
DAYTONA ORLANDO MELBOURNE VERO BEACH
1. 84.0 2007 1. 85.1 2005 1. 84.2 2007 1. 83.6 2010
2. 83.6 2005 2. 85.0 1987 2. 83.8 2010 2. 83.5 2005
3. 83.5 1970 3. 84.4 2007 3. 83.7 1941 3. 83.2 2007
4. 83.3 2010 4. 83.9 2010 4. 83.1 1999 4. 83.0 1951
5. 82.8 1999 5. 83.8 1963 5. 83.0 2005 5. 82.9 1954
.RAINFALL...
THE FRONT THAT MOVED INTO NORTHERN FLORIDA AT THE BEGINNING OF THE
MONTH BROUGHT A QUICK SHOT OF RAIN INTO THE AREA. THE SOUTHWESTERLY
FLOW THAT THIS FRONT BROUGHT...EVEN UPON ITS EXIT FROM THE AREA TO
THE NORTH...ALLOWED FOR MORE RAINFALL ACROSS EAST CENTRAL FLORIDA
THAN IN JUNE AND JULY. RAINFALL OBSERVATIONS WERE THEREFORE MORE
WIDESPREAD AND CLOSER TO NORMAL THAN EXPERIENCED DURING THE PREVIOUS
TWO MONTHS. CONVERGENCE OF BOUNDARIES AND SEA BREEZE FRONTS OCCURRED
FURTHER EAST THAN EARLIER IN THE SUMMER BECAUSE OF THE GREATER
WESTERLY COMPONENT TO THE FLOW THAT OCCURRED DURING AUGUST. THE
MIDDLE OF THE MONTH SAW A LARGE SCALE FRONT PROGRESS INTO NORTHERN
FLORIDA AND PRODUCE MULTIPLE DAYS OF PRECIPITATION AND STEADY
RAINFALL ACROSS THE REGION. HOWEVER...ABOVE AVERAGE TEMPERATURES IN
THE MID TO UPPER LEVELS OF THE ATMOSPHERE LIMITED INSTABILITY AND
THEREFORE THUNDERSTORM COVERAGE AND INTENSITY.
EVEN THOUGH RAINFALL AMOUNTS WERE GREATER THAN WHAT OCCURRED IN THE
PREVIOUS TWO MONTHS AND MORE WIDESPREAD IN COVERAGE...AUGUST STILL
EXPERIENCED AN OVERALL DEFICIT IN RAINFALL ACROSS EAST CENTRAL
FLORIDA. THE GREATEST LACK OF PRECIPITATION CONTINUED ALONG BREVARD
COUNTY INTO INDIAN RIVER AND NORTHERN SAINT LUCIE COUNTIES. VERO
BEACH HAD THEIR 9TH DRIEST AUGUST WITH 2.89 INCHES OF RAINFALL. VERO
BEACH`S ALL TIME DRIEST AUGUST ON RECORD IS 1.22 INCHES IN
1980.
BELOW IS A LIST OF OBSERVED PRECIPITATION TOTALS AND RAINFALL
STATISTICS FOR SELECT SITES ACROSS EAST CENTRAL FLORIDA FOR AUGUST
2010:
STATION AUGUST 2010 30 YEAR DEPARTURE PERCENT
OF RAINFALL NORMAL
FROM NORMAL NORMAL
DAYTONA BEACH 5.83" 6.09" -0.26" 96%
(DAB)
ORLANDO 5.62" 6.25" -0.63" 90%
(MCO)
MELBOURNE 5.59" 5.78" -0.19" 97%
(MLB)
VERO BEACH 2.89" 6.04" -3.15" 48%
(VRB)
CLERMONT 7.39" 6.96" 0.43" 106%
(CLRF1)
DELAND 6.26" 7.70" -1.44" 81%
(DELF1)
SANFORD 7.93" 7.23" 0.70" 110%
(SFNF1)
TITUSVILLE 6.19" 7.27" -1.08" 85%
(TITF1)
FORT PIERCE 4.32" 6.35" -2.03" 68%
(FPCF1)
STUART 7.54" 6.41" 1.13" 118%
(STRF1)
FOR MORE LOCAL CLIMATE 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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