September 2007 Much Warmer and Drier Than Normal Across Eastern Kentucky

DRY AND HOT CONDITIONS CONTINUED TO PLAGUE EASTERN KENTUCKY
THROUGHOUT THE MONTH OF SEPTEMBER. BOTH THE JACKSON WEATHER OFFICE
AND THE LONDON CORBIN AIRPORT FINISHED LAST MONTH WELL OVER FOUR
DEGREES ABOVE NORMAL. IN FACT...IT WAS THE WARMEST SEPTEMBER EVER AT
LONDON...WHILE IT WAS THE THIRD WARMEST AT JACKSON. MORE TEMPERATURE
RECORDS FELL AT BOTH LOCATIONS LAST MONTH AS WELL. SOME HIGHLIGHTS
INCLUDE...LONDON RECORDING THEIR HIGHEST SEPTEMBER TEMPERATURE WITH
A READING OF 97 DEGREES...JACKSON TYING THEIR SEPTEMBER MAXIMUM
TEMPERATURE RECORD OF 95 DEGREES...JACKSON BREAKING THE SEPTEMBER
MAXIMUM LOW TEMPERATURE RECORD WITH 73 DEGREES...AND LONDON TYING
THEIR SEPTEMBER MAXIMUM LOW RECORD OF 72 DEGREES. ALSO OF
INTEREST...BOTH LOCATIONS TIED THEIR RESPECTIVE LOCATION/S LATEST
CALENDAR YEAR 90 DEGREE READINGS. VERY DRY CONDITIONS WERE ONCE
AGAIN PRESENT ACROSS EASTERN KENTUCKY THROUGH SEPTEMBER. JACKSON
ENDED SEPTEMBER A LITTLE OVER AN INCH AND A QUARTER BELOW
NORMAL...BUT WOULD HAVE BEEN MUCH DRIER IF NOT FOR THE 2.01 INCHES
OF RAIN ON SEPTEMBER 10TH AND 11TH. THE LONDON CORBIN AIRPORT DID
NOT FARE SO WELL. SEPTEMBER 2007 WILL GO DOWN AS THE DRIEST
SEPTEMBER ON RECORD THERE AS THEY ENDED LAST MONTH NEARLY THREE
INCHES DRIER THAN NORMAL. LONDON CAME CLOSE TO BREAKING ANOTHER
NOTABLE RECORD. THANKS TO 0.27 INCHES OF RAIN ON SEPTEMBER
11TH...THIS ENDED A RUN OF 44 DAYS THAT LONDON DID NOT SEE AT LEAST
A QUARTER OF AN INCH OF RAIN. THE RECORD IS 46 DAYS THAT ENDED IN
JANUARY OF 1958. LONDON AND JACKSON HAVE NOT SEEN A MONTH WETTER
THAN NORMAL SINCE OCTOBER 2006...A RUN OF 11 MONTHS.

THE NATIONAL WEATHER SERVICE OFFICE NEAR JACKSON FINISHED SEPTEMBER
2007 WITH AN AVERAGE TEMPERATURE OF 72.6 DEGREES...WHICH IS 4.7
DEGREES ABOVE THE NORMAL OF 67.9 DEGREES. THE AVERAGE DAILY HIGH WAS
83.3 DEGREES...AND THE AVERAGE DAILY LOW WAS 61.9 DEGREES. SEPTEMBER
2007 WAS THE THIRD WARMEST SEPTEMBER ON RECORD AT JACKSON...BEHIND
ONLY THE 73.5 DEGREES FROM 1998 AND 2005. STRANGELY ENOUGH...
SEPTEMBER 2006 WAS THE COOLEST SEPTEMBER ON RECORD...RIGHT
BETWEEN THE FIRST AND THIRD WARMEST SEPTEMBERS. THE HIGHEST
TEMPERATURE FOR SEPTEMBER 2007 WAS 95 DEGREES AND OCCURRED ON THE
5TH. IN ADDITION TO BREAKING THE DAILY RECORD FOR THAT DAY...THE 95
DEGREES FROM SEPTEMBER 5TH TIED SEPTEMBER 6TH AND 14TH FROM 1998 AND
SEPTEMBER 13TH FROM 1991 FOR THE WARMEST READING EVER IN SEPTEMBER.
HIGH TEMPERATURE RECORDS WERE ALSO SET ON THE 4TH AND THE 8TH WITH
94 DEGREES EACH DAY. ONE MAXIMUM TEMPERATURE RECORD WAS TIED ON THE
25TH WITH A READING OF 89 DEGREES. THE 92 DEGREES FROM THE 24TH DID
NOT SET A DAILY RECORD...BUT TIED THE DATE FOR THE LATEST 90 DEGREE
OR ABOVE READING. THE LOWEST TEMPERATURE FROM LAST MONTH WAS 48
DEGREES...AND OCCURRED ON THE 16TH. NO LOW TEMPERATURE RECORDS WERE
SET OR TIED AT JACKSON LAST MONTH. MAXIMUM LOW TEMPERATURE RECORDS
WERE SET ON THE 7TH AND 10TH WITH READINGS OF 73 DEGREES AND 70
DEGREES RESPECTIVELY. THE 73 DEGREES FROM THE 7TH ALSO SET THE
MONTHLY MAXIMUM LOW RECORD...BESTING THE 72 DEGREES FROM SEPTEMBER
6TH 1983. ADDITIONALLY...JACKSON SAW 8 DAYS WHERE THE TEMPERATURE
AT LEAST HIT 90 DEGREES. THIS IS WELL ABOVE THE AVERAGE OF 1.2 DAYS
FOR SEPTEMBER. JACKSON HAS ACCUMULATED 35 DAYS OF HITTING 90 DEGREES
OR BETTER...WHICH IS THE THIRD GREATEST ANNUAL TOTAL...ONLY BEHIND
THE 41 DAYS FROM 1995...AND THE 39 DAYS FROM 1988. JACKSON AVERAGES
14.8 DAYS A YEAR OF HITTING 90 DEGREES.

THE JACKSON WEATHER OFFICE RECEIVED 2.49 INCHES OF PRECIPITATION IN
SEPTEMBER 2007...WHICH IS 1.28 INCHES BELOW THE NORMAL OF 3.77
INCHES. THERE WERE SIX DAYS WHEN A HUNDREDTH OF AN INCH OR MORE OF
PRECIPITATION WAS RECORDED...AND FOUR DAYS WHEN A TENTH OF AN INCH
OR MORE FELL. THERE WAS ONE DAY WHEN AT LEAST A HALF AN INCH OF RAIN
WAS RECEIVED...AND ONE DAY SAW MORE THAN ONE INCH. THE DAY OF THE
11TH NETTED 1.89 INCHES OF RAIN...WHICH WAS THE MOST RAINFALL LOGGED
IN A SINGLE DAY LAST MONTH...AND SET THE ONLY DAILY PRECIPITATION
RECORD FOR SEPTEMBER 2007. THIS AMOUNT ACCOUNTED FOR THREE QUARTERS
OF THE ENTIRE MONTH/S TOTAL. THE MOST PRECIPITATION RECEIVED IN A 24
HOUR PERIOD OCCURRED FROM SEPTEMBER 10TH THROUGH THE 11TH WHEN A
TOTAL OF 2.01 INCHES FELL. ALSO OF NOTE...SEPTEMBER WAS THE ELEVENTH
MONTH IN A ROW OF BELOW NORMAL PRECIPITATION. SINCE NOVEMBER 1ST
2006...JACKSON HAS RECEIVED 27.57 INCHES OF PRECIPITATION...WHICH IS
18.53 INCHES BELOW NORMAL. SO FAR THIS YEAR...JACKSON HAS
ACCUMULATED 23.11 INCHES OF PRECIPITATION...WHICH IS 14.62 INCHES
SHORT OF NORMAL...OR WELL OVER ONE FOOT.

THUNDER WAS HEARD 2 DAYS LAST MONTH AT THE JACKSON WEATHER
OFFICE...WHICH IS NEAR THE AVERAGE OF 3.0 DAYS FOR SEPTEMBER. THERE
WERE 8 DAYS WITH FOG...NONE OF WHICH FEATURED DENSE FOG. SEPTEMBER
NORMALLY AVERAGES 6.6 DAYS OF DENSE FOG. 16,669 MINUTES OF SUNSHINE
WERE RECORDED LAST MONTH WHICH IS 75 PERCENT OF ALL POSSIBLE
SUNSHINE FOR THE MONTH. THE AVERAGE WIND SPEED FOR SEPTEMBER WAS 1.4
MPH...AND THE HIGHEST WIND GUST OF 23 MPH WAS RECORDED ON SEPTEMBER
26TH. THE MEAN WIND SPEED FOR SEPTEMBER IS TYPICALLY 4.8 MPH.

246 COOLING DEGREE DAYS WERE RECORDED AT THE JACKSON WEATHER OFFICE
IN SEPTEMBER...WHICH IS 116 COOLING DEGREE DAYS ABOVE NORMAL. THE
SEASONAL COOLING DEGREE DAY TOTAL IS NOW 1523...WHICH IS 494 COOLING
DEGREE DAYS ABOVE NORMAL. 14 HEATING DEGREE DAYS WERE RECORDED LAST
MONTH...WHICH IS 30 HEATING DEGREE DAYS BELOW NORMAL. THESE WERE THE
FIRST HEATING DEGREE DAYS RECORDED THIS SEASON...THUS THE SEASONAL
HEATING DEGREE DAY TOTAL IS 14...WHICH IS 34 HEATING DEGREE DAYS
BELOW NORMAL FOR THE SEASON.

AT THE LONDON CORBIN AIRPORT...THE AVERAGE TEMPERATURE WAS 72.4
DEGREES...WHICH IS 4.5 DEGREES ABOVE THE NORMAL OF 67.9 DEGREES FOR
SEPTEMBER. THE AVERAGE DAILY HIGH WAS 86.2 DEGREES...AND THE AVERAGE
DAILY LOW WAS 58.6 DEGREES. SEPTEMBER 2007 IS THE WARMEST SEPTEMBER
OF ALL TIME...ECLIPSING THE PREVIOUS WARMEST SEPTEMBER OF 72.0
DEGREES FROM 2005. THE HIGHEST TEMPERATURE FROM LAST MONTH WAS 97
DEGREES...WHICH OCCURRED ON THE 5TH. IN ADDITION TO ESTABLISHING A
NEW DAILY TEMPERATURE RECORD...THIS READING WAS THE WARMEST EVER
SEPTEMBER READING...SURPASSING THE 95 DEGREES THAT WAS FIRST
ESTABLISHED BACK IN 1957. OTHER MAXIMUM TEMPERATURE RECORDS WERE
BROKEN ON THE 4TH...23RD AND 24TH...WITH 94 DEGREES...95 DEGREES AND
94 DEGREES RESPECTIVELY. THE 92 DEGREES ON THE 8TH TIED THE HIGH
TEMPERATURE RECORD FOR THAT DAY...AS DID THE 90 DEGREES ON BOTH THE
25TH AND 26TH. THE 90 DEGREES ON THE 26TH ALSO TIED FOR THE LATEST
90 DEGREE OR HIGHER FOR THE CALENDAR YEAR. THE LOWEST TEMPERATURE
FROM SEPTEMBER 2007 WAS 44 DEGREES...AND OCCURRED ON THE 29TH. NO
LOW TEMPERATURE RECORDS WERE TIED OR BROKEN AT LONDON LAST MONTH.
MAXIMUM LOW TEMPERATURE RECORDS WERE SET ON THE 7TH WITH 71
DEGREES...AND ON THE 10TH WITH 72 DEGREES. THE READING FROM THE 10TH
ALSO TIED SEPTEMBER 5TH 1979 FOR THE WARMEST SEPTEMBER MAXIMUM LOW
TEMPERATURE. ALSO OF INTEREST...THE LONDON CORBIN AIRPORT OBSERVED
12 DAYS WITH A TEMPERATURE OF AT LEAST 90 DEGREES. THIS AMOUNT TIED
1955 FOR THE MOST 90 DEGREE DAYS IN SEPTEMBER. LONDON AVERAGES 1.5
DAYS OF 90 DEGREE TEMPERATURES IN SEPTEMBER...AND NORMALLY ONLY SEES
18.2 DAYS FOR THE ENTIRE YEAR. LONDON HAS NOW SEEN 51 DAYS OF
TEMPERATURES AT LEAST 90 DEGREES THIS YEAR...WELL ABOVE THE
SECOND PLACE TOTAL OF 42 DAYS FROM 1980.

THE LONDON CORBIN AIRPORT RECORDED ONLY 0.43 INCHES OF PRECIPITATION
IN SEPTEMBER 2007...WHICH IS 2.94 INCHES BELOW THE NORMAL OF 3.37
INCHES. LAST MONTH WAS THE DRIEST SEPTEMBER ON RECORD AT LONDON...
BESTING THE PREVIOUS DRIEST OF 0.59 INCHES FROM 1961. THE DRIEST
MONTH OF ALL TIME IS 0.02 INCHES FROM OCTOBER OF 1963. THERE WERE
FIVE DAYS WHEN A HUNDREDTH OF AN INCH OR MORE FELL...AND ONE DAY
WHEN A TENTH OF AN INCH OR MORE OF RAIN WAS RECORDED. LONDON HAD NO
DAYS WITH AT LEAST A HALF AN INCH. THE GREATEST DAILY AMOUNT WAS
0.27 INCHES AND OCCURRED ON THE 11TH. THE GREATEST AMOUNT OF
PRECIPITATION RECEIVED IN A 24 HOUR PERIOD WAS 0.32 INCHES FOR THE
10TH THROUGH THE 11TH. NO DAILY PRECIPITATION RECORDS WERE SET OR
TIED AT LONDON LAST MONTH. OVER THE LAST TWO MONTHS...LONDON HAS
RECEIVED ONLY 0.86 INCHES OF RAIN. NOTE LONDON/S ANNUAL
PRECIPITATION TOTAL IS MISSING DUE TO A POWER OUTAGE IN APRIL.

LONDON HAD 2 DAYS WITH THUNDER LAST MONTH. ALSO...THERE WERE 20
DAYS WITH FOG...AND TWO DAYS WITH DENSE FOG. THE AVERAGE WIND SPEED
FOR SEPTEMBER 2007 WAS 2.9 MPH...WITH THE HIGHEST WIND GUST OF 35
MPH RECORDED ON THE 26TH.

LONDON RECORDED 242 COOLING DEGREE DAYS LAST MONTH...WHICH IS 109
COOLING DEGREES DAYS ABOVE NORMAL. THIS IS THE HIGHEST TOTAL OF
COOLING DEGREE DAYS EVER RECORDED IN SEPTEMBER. THE SEASONAL
COOLING DEGREE TOTAL IS MISSING THANKS TO THE POWER OUTAGE IN APRIL.
THERE WERE 11 HEATING DEGREE DAYS RECORDED AT THE LONDON CORBIN
AIRPORT IN SEPTEMBER 2007...WHICH IS 37 BELOW NORMAL. THESE WERE THE
FIRST HEATING DEGREE DAYS RECORDED THIS SEASON. THE SEASONAL TOTAL
OF 11 IS 39 HEATING DEGREE DAYS BELOW NORMAL FOR THE SEASON.

WEATHER RECORDS AT THE NATIONAL WEATHER SERVICE OFFICE NEAR JACKSON
KENTUCKY DATE BACK TO JANUARY 1ST 1981...WHILE CLIMATE RECORDS FOR
THE LONDON CORBIN AIRPORT BEGAN ON THE 11TH OF NOVEMBER 1954.
 

FOR ADDITIONAL MONTHLY WEATHER INFORMATION:

Jackson/London Monthly Climate Summary

 


 



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