601
NOUS43 KIND 011720
PNSIND
INZ021-028>031-035>049-051>057-060>065-067>072-012300-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1220 PM PM EST SUN NOV 1 2009
...OCTOBER COOLER AND WETTER THAN NORMAL AT INDIANAPOLIS
AND TIED FOR 9TH WETTEST OCTOBER ON RECORD...
OCTOBER STARTED COOLER THAN NORMAL AND REMAINED THAT WAY THROUGH
THE 19TH. ON THE 16TH THE MAXIMUM TEMPERATURE OF 44 DEGREES AT
INDIANAPOLIS TIED THE RECORD LOW MAXIMUM TEMPERATURE FOR THE DATE.
THE TEMPERATURE CAME PRECARIOUSLY CLOSE TO DIPPING TO THE FREEZING
MARK FOR THE FIRST TIME SINCE APRIL 8TH WHEN 33 DEGREES WAS RECORDED
ON THE 8TH...11TH AND 17TH. ON THE 18TH...WITH A COLD AIR MASS IN
PLACE...REDUCED CLOUD COVER AND LIGHTER WIND...THE TEMPERATURE MADE
IT DOWN TO 31 DEGREES...THE COLDEST OF THE MONTH. THE READING TIED
WITH 4 OTHER YEARS SINCE RECORDS BEGAN FOR BEING THE 7TH COOLEST ON
THIS DATE. MUCH OF CENTRAL INDIANA EXPERIENCED A HARD FREEZE AT THIS
TIME.
WARMER AIR QUICKLY MOVED IN AFTER THE 18TH...PROVIDING DAILY HIGHS
MAINLY IN THE 60S AND LOWS IN THE 40S AND LOWER 50S THROUGH THE END
OF THE MONTH. THE WARMEST DAY OF OCTOBER FELL ON THE 23RD WITH A
HIGH TEMPERATURE OF 70 DEGREES. IT WAS NOT UNTIL THE 30TH WHEN THE
HIGHEST DAILY AVERAGE TEMPERATURE OF 61 DEGREES OCCURRED...A RESULT
OF A STRONG SOUTHERLY WIND SOUTH OF A WARM FRONT. DESPITE THE PUSH
TO ALMOST EXCLUSIVELY ABOVE NORMAL TEMPERATURES THE LAST 12 DAYS
OF THE MONTH...IT WAS TOO LITTLE TOO LATE AND THE MONTHLY AVERAGE
TEMPERATURE WAS 3.0 DEGREES BELOW NORMAL. THE WARMEST OCTOBER ON
RECORD WAS IN 1900 WITH AN AVERAGE TEMPERATURE OF 63.4 DEGREES.
THE COLDEST OCTOBER ON RECORD WAS IN 1925 WHEN THE AVERAGE MONTHLY
TEMPERATURE WAS 46.6 DEGREES.
RAINFALL WAS PLENTIFUL. THE MONTHLY TOTAL AT INDIANAPOLIS WAS
5.59 INCHES...WHICH WAS 2.83 INCHES ABOVE NORMAL. THIS TIES WITH
THE YEAR OF 1937 FOR BEING THE 9TH WETTEST OCTOBER ON RECORD. THE
WETTEST OCTOBER ON RECORD AT INDIANAPOLIS WAS IN 1919 WITH 8.98
INCHES OF PRECIPITATION. THE DRIEST OCTOBER ON RECORD OCCURRED IN
1963 WITH ONLY .17 OF AN INCH OF RAIN DURING THE MONTH.
THIS OCTOBER CONTINUED THE TREND OF ABOVE NORMAL PRECIPITATION FOR
THE YEAR. FOR THE YEAR WE NOW STAND 9.89 INCHES ABOVE NORMAL. THE
YEAR TO DATE TOTAL OF 44.20 INCHES IS THE 12TH WETTEST ON RECORD FOR
THE PERIOD ENDING OCTOBER 31ST.
IN OCTOBER THERE WERE 4 DAYS WITH OVER THREE QUARTERS OF AN INCH
OF RAINFALL...THE GREATEST OF WHICH WAS 1.20 INCHES ON THE 23RD.
THIS VALUE IS THE SECOND GREATEST AMOUNT FOR THIS DATE IN THE RECORD
BOOKS. THE GREATEST AMOUNT WAS 1.57 INCHES IN 1957. THE 23RD BY THE
WAY WAS NOT ONLY THE WARMEST AND WETTEST DAY BUT ALSO THE WINDIEST
WITH GUSTS REACHING 47 MPH FROM THE SOUTHWEST...AND IT WAS ALSO THE
DAY OF THE LOWEST PRESSURE READING...29.44 INCHES. INTERESTINGLY THE
PEAK WIND SPEED OF 47 MPH WAS THE SAME SPEED AS FOR SEPTEMBER.
WEATHER SYSTEMS KEPT MOVING THROUGH THE AREA ON A RAPID ENOUGH PACE
THAT THERE WAS NEVER MORE THAN 6 DAYS WITHOUT MEASURABLE
RAINFALL...SOMETHING FARMERS DID NOT WANT TO SEE AS THEY WERE TRYING
TO HARVEST CROPS. IN A CLIMATOLOGICALLY NORMAL OCTOBER WE SEE THE
FIRST DUSTING OF SNOW OCCUR BUT THIS OCTOBER WE DID NOT SEE A FLAKE.
AT THE INDIANAPOLIS INTERNATIONAL AIRPORT THERE WERE 2 DAYS WITH
THUNDERSTORMS AND 1 DAY WITH DENSE FOG.
AT INDIANAPOLIS...TEMPERATURE AND RAINFALL RECORDS BEGAN IN 1871.
HEROLD/GRAY
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