Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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CXUS51 KBUF 031252
CLMBUF

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
1217 PM EDT TUE OCT 1 2019

...................................

...THE BUFFALO NY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2019

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              98   09/03/1953
 LOW               32   09/30/1991
                        09/24/1963
                        09/28/1957
HIGHEST            85   09/22                         90  09/05
LOWEST             49   09/27                         45  09/23
AVG. MAXIMUM     74.0              71.1     2.9     75.2
AVG. MINIMUM     56.3              53.4     2.9     59.2
MEAN             65.2              62.2     3.0     67.2
DAYS MAX >= 90      0               0.1    -0.1        1
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.99   1977
 MINIMUM         0.31   1897
TOTALS           6.28              3.90    2.38     3.58
DAYS >= .01        14                                 14
DAYS >= .10         9                                  4
DAYS >= .50         5                                  2
DAYS >= 1.00        1                                  2
GREATEST
 24 HR. TOTAL    2.14   09/11 TO 09/11           09/10 TO 09/10

SNOWFALL (INCHES)
RECORDS
 TOTAL              T   1956
                        1950
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0

DEGREE_DAYS
HEATING TOTAL      42               135     -93       83
 SINCE 7/1         45               162    -117       83
COOLING TOTAL      52                53      -1      159
 SINCE 1/1        597               540      57      894
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.3
HIGHEST WIND SPEED/DIRECTION    28/230
HIGHEST GUST SPEED/DIRECTION    38/220    DATE  09/23

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             18
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP               0
HEAVY RAIN                7     RAIN                       5
LIGHT RAIN               18     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      1
HAZE                      2

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

...PLEASANT SEPTEMBER, FILLED WITH OVERNIGHT RAINS...

OVERALL THE MONTH OF SEPTEMBER WAS NICE WITH MUCH OF THE MONTH AT OR
ABOVE TEMPERATURE NORMALS. IT WAS A WET MONTH, HOWEVER MUCH OF THE
RAIN FELL DURING THE LATE EVENING AND OVERNIGHT HOURS...ALLOWING FOR
OUTDOOR ACTIVITIES TO CONTINUE AS PLANNED. THERE WERE NO EARLY
SEASON COLD SNAPS.

THE TEMPERATURE THIS MONTH AVERAGED 3.0F DEGREES ABOVE THE MONTHLY
NORMAL OF 62.2F. OVERNIGHT TEMPERATURES WERE CONSISTENTLY MILD, WITH
THE COOLEST TEMPERATURE ONLY 49F. THIS READING RANKS BEHIND ONLY
SEPTEMBER OF 1921 (52F) AS THE WARMEST LOW TEMPERATURE FOR THE
MONTH. WHILE THE NIGHTS WERE MILD, DAYTIME TEMPERATURES HAD NO
EXTREMES AND OVERALL FOR THE MONTH SEPTEMBER FINISHED TIED FOR 24TH
WARMEST. ALL DAYS AVERAGED ABOVE NORMAL EXCEPT 7, WITH 5 OF THESE
DAYS COMING IN A STRETCH FROM THE 5TH TO THE 9TH. THERE WERE 24 DAYS
THAT REACHED THE 70F MARK...TIED FOR 8TH GREATEST IN THE MONTH.

PRECIPITATION TOTALED 6.28 INCHES FOR THE MONTH, MAKING SEPTEMBER
THE 7TH WETTEST IN RECORDED HISTORY. THE WETTEST DAY WAS THE 11TH,
WHEN SEVERAL ROUNDS OF CONVECTION PASSED OVER THE AIRPORT DURING THE
EARLY MORNING AND THEN LATE AFTERNOON HOURS. IN TOTAL ON THE 11TH,
2.14 INCHES OF RAIN FELL...SETTING A NEW DAILY RECORD FOR THE DATE.
THIS WAS ALSO THE WETTEST DAY SINCE JULY 13TH OF 2017. THERE WERE 5
DAYS THAT TOTALED A HALF INCH OR MORE OF PRECIPITATION...1 DAY LESS
THAN THE MONTHLY RECORD OF 6...SET BACK IN 1996 AND 1977. THERE WERE
8 DAYS WITH THUNDER, MORE THAN DOUBLE THE MONTHLY AVERAGE OF 3.5
THUNDERSTORMS.

FOR THE MONTH OF SEPTEMBER A DOMINATE RIDGE OF HIGH PRESSURE WAS
LOCATED OVER THE SOUTHEAST, WITH THIS FEATURE MAINTAINING SUMMER-
LIKE WARMTH ACROSS THE EASTERN GREAT LAKES REGION THROUGH MUCH OF
THE MONTH. THERE WERE PERIODIC BUCKLES IN THE RIDGE, WITH BRIEF
TRENDS TO COOLER AND WETTER WEATHER...BUT OVERALL THE MONTH OF
SEPTEMBER WAS PLEASANT AND WARM.

THUNDERSTORMS OCCURRED ON 3 OF THE FIRST 4 DAYS THIS MONTH, QUICKLY
BRINGING THE MONTHLY PRECIPITATION TOTAL TO NEAR TWO INCHES. THE ONE
EXTENDED PERIOD OF BELOW NORMAL TEMPERATURES OCCURRED ON THE 5TH
THROUGH THE 9TH AS AN UPPER LEVEL TROUGH OF COLD AIR ACCOMPANIED A
WEAK SURFACE HIGH. THOUGH COOLER, RAIN SHOWERS WERE HELD LARGELY AT
BAY UNTIL THE 11TH WHEN THE SURFACE HIGH PRESSURE DEPARTED AND A
WARMER AND MUCH MORE MOIST AIRMASS PUSHED INTO OUR REGION. A MUGGY
DAY ON THE 11TH WAS ALSO MATCHED WITH SEVERAL ROUNDS OF SHOWERS AND
THUNDERSTORMS THAT TRAINED ON A WEST TO EAST FRONTAL BOUNDARY THAT
STRETCHED ACROSS THE CENTRAL GREAT LAKES AND WESTERN NEW YORK.
THUNDERSTORMS ROCKED BUFFALO JUST PAST MIDNIGHT EARLY ON THE 11TH
AND ANOTHER ROUND OF STORMS THAT EVENING BROUGHT SOME LOW LYING
PONDING OF WATER TO PORTIONS OF BUFFALO AND THE NORTHTOWNS, BUT NO
WIDESPREAD FLOODING WAS REPORTED. THE 17TH TO 22ND FEATURE BEAUTIFUL
AUTUMN WEATHER WITH SUNNY DAYS AND MILD OVERNIGHTS. THE NEXT DELUGE
OF RAIN CAME ON THE 23RD WHEN THUNDERSTORMS PASSED THROUGH BUFFALO
AND THE NORTHTOWNS DURING THE AFTERNOON HOURS. THESE PRODUCED
TORRENTIAL DOWNPOURS THAT CREATED POOR DRAINAGE AND LOW LYING
PONDING OF WATER TO MAINLY THE NORTHTOWNS. THE LAST HEAVY RAIN EVENT
OCCURRED ON THE 26TH WITH ANOTHER HALF TO ONE INCH OF RAIN FALLING
ACROSS METRO BUFFALO...WITH THIS RAIN PUSHING THE BUFFALO CLIMATE
SITE INTO A TOP TEN WETTEST SEPTEMBER ON RECORD.

LAKE ERIE REMAINED WARM THROUGH THE MONTH, WITH THE WATER
TEMPERATURE DROPPING FROM 72F AT MONTHS START TO 67F AT MONTHS END.
THERE WERE NO HIGH WIND EVENTS THIS MONTH, OWING IN PART TO THE
LARGE RIDGE OF HIGH PRESSURE DOMINATING THE EAST COAST...AND THE
STRONGEST GUST OF 38 MPH OCCURRED FROM THE SOUTHWEST DURING THE
MORNING HOURS OF THE 23RD.

IN ALL A PLEASANT MONTH OF SEPTEMBER, WITH A FEW WET PERIODS.

&&

THOMAS

$$


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