Climatological Report (Seasonal)
Issued by NWS Northern Indiana

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CXUS53 KIWX 011028
CLSFWA

CLIMATE REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
625 AM EDT SAT SEP 1 2012

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

...THE FORT WAYNE CLIMATE SUMMARY FOR THE SUMMER SEASON, FROM
6/1/2012 TO 8/31/2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1897 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             106   06/28/2012
                        06/25/1988
                        07/14/1936
 LOW               32   06/14/1910
HIGHEST           106R  06/28        82      24      100
LOWEST             44   06/02        61     -17       50
AVG. MAXIMUM     86.7              82.5     4.2     86.0
AVG. MINIMUM     61.1              60.9     0.2     63.9
MEAN             73.9              71.7     2.2
DAYS MAX >= 90     37              11.6    25.4       31
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        18.70   1986
 MINIMUM         5.00   2012
TOTALS           8.51             12.04   -3.53     7.60
DAILY AVG.       0.09              0.13   -0.04     0.08
DAYS >= .01        26              30.1    -4.1       28
DAYS >= .10        17              19.9    -2.9       15
DAYS >= .50         6               8.0    -2.0        5
DAYS >= 1.00        3               3.4    -0.4        1
GREATEST
 24 HR. TOTAL    2.64   MM

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

DEGREE_DAYS
HEATING TOTAL      31                41     -10        6
 SINCE 7/1          5                12      -7        0
COOLING TOTAL     874               660     214      952
 SINCE 1/1       1027               717     310     1049
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.6
HIGHEST WIND SPEED/DIRECTION    67/290    DATE  06/29
HIGHEST GUST SPEED/DIRECTION    91/270    DATE  06/29

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           26
NUMBER OF DAYS PC             56
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                9     RAIN                      12
LIGHT RAIN               29     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      40     FOG W/VIS <= 1/4 MILE      1
HAZE                     23

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

&&

THE SUMMER OF 2012 WAS A TALE OF TWO SEASONS. THE VERY FIRST DAY OF
SUMMER WAS ONE OF THE COOLEST ON RECORD...WITH A HIGH OF ONLY 56 AT
FORT WAYNE. THIS DAY TURNED OUT TO BE AN ANOMALY FOR THE FIRST HALF
OF THE SUMMER AS VERY DRY CONDITIONS AND RECORD HEAT BROUGHT ON A
DEVASTATING DROUGHT TO THE REGION. A PERSISTENT RIDGE OF HIGH
PRESSURE OVER THE MIDWEST AND STRONG SUBSIDENCE WAS RESPONSIBLE FOR
CAPPING THE ATMOSPHERE AND INHIBITING CONVECTIVE DEVELOPMENT.

THE ATMOSPHERIC PATTERN FINALLY BEGAN TO CHANGE IN MID JULY WITH
SEVERAL MESOSCALE CONVECTIVE SYSTEMS WHICH MOVED THROUGH THE REGION.
NOT ONLY DID THESE SYSTEMS BRING MUCH NEEDED WIDESPREAD
RAINFALL...BUT THEY ALSO BROUGHT SEVERE WEATHER. DAMAGING WINDS IN
EXCESS OF 80 MPH AND LARGE HAIL WERE OBSERVED WITH A COUPLE
DIFFERENT CONVECTIVE SYSTEMS. ONCE THE SOIL MOISTURE WAS REPLENISHED
BY HEAVY RAIN FROM THESE SYSTEMS...IT SEEMED THAT EVERY FRONT THAT
FOLLOWED WAS ABLE TO MORE EASILY GENERATE RAINFALL. THE LATTER HALF
OF THE SUMMER ENDED UP WITH NORMAL TO ABOVE NORMAL RAINFALL. WHILE
THIS RAIN WAS TOO LATE FOR MOST CORN CROPS...IT WAS TIMED PERFECTLY
FOR SOYBEANS. BROWN LAWNS AND DORMANT VEGETATION QUICKLY TURNED
GREEN AND BEGAN GROWING IN EARNEST DURING AUGUST.

TEMPERATURES VARIED DRAMATICALLY OVER THE TWO HALVES OF THE SUMMER
AS WELL. WITH VERY DRY CONDITIONS ENTERING SUMMER AFTER THE SECOND
DRIEST SPRING ON RECORD...THE ATMOSPHERE IN OUR REGION HAD A
MORE DESERT LIKE FEEL THAN THE NORMAL HUMID CLIMATE USUALLY
EXPERIENCED IN THE SUMMER. DURING THE MONTH OF JUNE...IT WAS NOT
UNCOMMON TO SEE AFTERNOON DEW POINTS DROP INTO THE 40S AND EVEN INTO
THE 30S WITH RELATIVE HUMIDITIES LESS THAN 30 PERCENT. EVAPORATION
RATES IN THIS ENVIRONMENT WERE MEASURING BETWEEN TWO AND THREE
TENTHS OF AN INCH EACH DAY. WITH LITTLE MOISTURE LEFT IN THE GROUND
AND A DRY ATMOSPHERE...DIURNAL TEMPERATURE SPREADS ON THE ORDER OF
30 TO 40 DEGREES WERE COMMON. AS A RESULT...RECORD HIGH TEMPERATURES
IN THE LOW TO MID 100S WERE SEEN BY LATE JUNE AND CONTINUED INTO EARLY
JULY.

A HISTORICAL COMPARISON OF THE FIRST AND SECOND HALVES OF SUMMER
2012 SHOWS THE DRASTIC DIFFERENCES. FOR THE PERIOD JUNE 1ST TO JULY
15TH...THE AVERAGE TEMPERATURE WAS 75.1 DEGREES WHICH RANKED AS THE
4TH WARMEST PERIOD ON RECORD BETWEEN 1912 AND 2012. THE AVERAGE
TEMPERATURE FROM JULY 16 THROUGH AUGUST 31ST WAS 72.8 DEGREES. THIS
WAS NEARLY 2.5 DEGREES COOLER THAN THE FIRST HALF OF THE SUMMER AND
RANKED 47TH WARMEST FOR THIS PERIOD. FOR THE ENTIRE SUMMER SEASON OF
2012...THE AVERAGE TEMPERATURE WAS 73.9 DEGREES WHICH IS 2.2 DEGREES
ABOVE NORMAL. THIS RANKS AS THE 16TH WARMEST SUMMER SINCE 1912.

SIMILAR CONTRASTS CAN BE SEEN IN THE PRECIPITATION DATA. THE FIRST
HALF OF SUMMER WAS EXTREMELY DRY WITH A PALTRY 0.70 INCHES OF
PRECIPITATION. THIS WAS BY FAR THE DRIEST START TO SUMMER. AS A
COMPARISON...THE SECOND DRIEST START WAS 1999 WHEN 1.52 INCHES OF
RAIN FELL...MORE THAN TWICE WHAT OCCURRED THIS SUMMER. THE SECOND
HALF OF THE SEASON WAS MUCH WETTER WITH 7.81 INCHES FALLING. THIS
HALF OF SUMMER RANKED AS THE 14TH WETTEST. FOR THE ENTIRE SUMMER
SEASON...FORT WAYNE RECEIVED 8.51 INCHES OF RAIN WHICH WAS 3.53
INCHES BELOW NORMAL. THIS RANKED AS THE 30TH DRIEST SUMMER ON RECORD.

A NUMBER OF HEAT RECORDS AND STREAKS OCCURRED THIS SUMMER. FORT
WAYNE RECORDED 6 DAYS WITH HIGH TEMPERATURES OF 100 DEGREES OR
WARMER. THIS TIED 1988 AND 1936 FOR THE SECOND HIGHEST NUMBER OF 100
DEGREE DAYS. THE RECORD FOR MOST 100 DEGREE DAYS IS 8 WHICH OCCURRED
IN 1934. THE RECORD FOR MOST CONSECUTIVE 100 DEGREE DAYS WAS BROKE
AS FORT WAYNE RECORDED 4 STRAIGHT DAYS OF 100 DEGREES OR
HIGHER...ENDING ON 7/7/2012. FORT WAYNE ALSO TIED ITS ALL TIME
HIGHEST TEMPERATURE WHEN THE THERMOMETER HIT 106 DEGREES ON JUNE
28TH. THIS TIED 1988...1936 AND 1934...IRONICALLY ALL YEARS WITH
SEVERE DROUGHTS.

FORT WAYNE ALSO BROKE THE RECORD FOR MOST CONSECUTIVE DAYS OF 90
DEGREES OR WARMER WITH 22 STRAIGHT DAYS...ENDING ON JULY 18TH. THE
PREVIOUS RECORD WAS 14 IN JULY 1983. THE RECORD FOR MOST CONSECUTIVE
DAYS OF 80 DEGREES OR WARMER WAS ALSO BROKE WITH 56 CONSECUTIVE DAYS
ENDING ON AUGUST 8TH.

$$

LASHLEY





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