Climatological Report (Annual)
Issued by NWS Northern Indiana

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000
CXUS53 KIWX 011605
CLAFWA

CLIMATE REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
1025 AM EST SAT JAN 1 2011

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

...THE FORT WAYNE CLIMATE SUMMARY FOR THE YEAR OF 2010...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1897 TO 2010

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             106   06/25/1988
 LOW              -24   01/12/1918
HIGHEST            95   07/24        MM      MM       95
                        07/23
LOWEST              0   01/10        MM      MM      -19
                        01/09
AVG. MAXIMUM     61.9              59.6     2.3     59.4
AVG. MINIMUM     42.1              40.2     1.9     40.2
MEAN             52.0              49.9     2.1
DAYS MAX >= 90     26              15.4    10.6        4
DAYS MAX <= 32     59              42.9    16.1       49
DAYS MIN <= 32    127             126.9     0.1      117
DAYS MIN <= 0       2               9.8    -7.8       10

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        42.16   2006
 MINIMUM           MM   MM
TOTALS          33.15             36.55   -3.40    41.12
DAILY AVG.       0.09              0.10   -0.01     0.11
DAYS >= .01       120             132.9   -12.9      138
DAYS >= .10        65              74.5    -9.5       74
DAYS >= .50        20              23.8    -3.8       23
DAYS >= 1.00       10               7.7     2.3       10

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
TOTALS           30.7              35.1    -4.4     30.6
SINCE 7/1        10.9              11.8    -0.9      9.5
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE      61              32.6    28.4       63
DAYS >= 1.0        12              10.4     1.6       11
GREATEST
 SNOW DEPTH         6   02/10                          7

DEGREE_DAYS
HEATING TOTAL    5823              6205    -382     6058
 SINCE 7/1       2371              2336      35     2218
COOLING TOTAL    1215               830     385      616
 SINCE 1/1       1215               830     385      616
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.4
HIGHEST WIND SPEED/DIRECTION    41/260    DATE  06/27
HIGHEST GUST SPEED/DIRECTION    61/250    DATE  06/27

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

NUMBER OF DAYS FAIR           71
NUMBER OF DAYS PC            166
NUMBER OF DAYS CLOUDY        128

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             42     MIXED PRECIP               0
HEAVY RAIN               29     RAIN                      42
LIGHT RAIN              133     FREEZING RAIN              0
LT FREEZING RAIN         16     HAIL                       1
HEAVY SNOW                1     SNOW                      17
LIGHT SNOW               54     SLEET                      5
FOG                     226     FOG W/VIS <= 1/4 MILE     22
HAZE                    136

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

&&

...WEATHER SUMMARY FOR 2010...

...THE 2010 WEATHER YEAR IN REVIEW FOR FORT WAYNE...

IT WAS AN ACTIVE 2010 WITH PERIODS OF SNOW...INTENSE THUNDERSTORMS
WITH WINDS OVER 80 MPH...AND A RECORD NUMBER OF TORNADOES FOR THE
NORTHERN INDIANA COUNTY WARNING AREA...CWA. BELOW IS SUMMARY OF THE
YEAR FOLLOWED BY EACH MONTHS INDIVIDUAL SUMMARY. MORE INFORMATION
CAN BE FOUND ON OUR WEBSITE AT WWW.WEATHER.GOV/IWX.

THE YEAR BEGAN WITH AN ONGOING EL NINO AND A COLD AND DRY WINTER
SEASON BUT SNOWFALL IN MANY AREAS WAS ABOVE NORMAL. DESPITE THE COLD
WINTER...SPRING ARRIVED QUICKLY AND COINCIDENT WITH THE START OF
MARCH. TEMPERATURES WARMED INTO THE 50S AND 60S DURING THE FIRST
PART OF MARCH AND THIS WARM SIGNAL CONTINUED THROUGH THE ENTIRE
SPRING WITH NUMEROUS DAYS IN THE 70S AND 80S AND A FEW DAYS IN THE
90S DURING MAY. SPRING BEGAN DRY BUT PRECIPITATION IN APRIL EDGED
JUST ABOVE NORMAL AND MAY WAS A VERY WET MONTH. OVER 10 INCHES OF
RAIN FELL AT FORT WAYNE DURING THE SPRING...JUST OVER 3 INCHES ABOVE
NORMAL. THE EL NINO EVENT THAT BEGAN IN 2009 QUICKLY CAME TO AN END
DURING THE SPRING.

THE SUMMER WAS ALSO WARM WITH NEAR NORMAL PRECIPITATION. MANY AREAS
EXPERIENCED NUMEROUS DAYS IN THE 90S WITH HIGH HUMIDITY LEVELS. THE
END OF THE SUMMER BEGAN TO DRY OUT AND THE FALL SEASON WAS VERY
DRY...NEARLY 2.5 INCHES BELOW NORMAL. THESE DRY CONDITIONS LED TO
LOW END DROUGHT CONDITIONS BY MID FALL AND BY LATE OCTOBER MOST
LOCATIONS WERE EXPERIENCING D0 OR D1 DROUGHT CONDITIONS. THE DROUGHT
WOULD EASE AS NOVEMBER PROGRESSED. A MODERATE TO STRONG LA NINA
DEVELOPED IN THE PACIFIC OCEAN DURING THE LATE SUMMER AND THIS BEGAN
TO INFLUENCE OUR LOCAL WEATHER WITH NUMEROUS STORM SYSTEMS THAT
BROUGHT MUCH NEEDED RAINFALL DURING THE LAST HALF OF NOVEMBER. THE
LA NINA CONTINUED IN DECEMBER WITH SEVERAL STRONG STORM SYSTEMS BUT
THE HEAVIEST PRECIPITATION AND SNOWFALL REMAINED SOUTH OF THE AREA
ACROSS THE OHIO VALLEY REGION.

2010 WILL BE REMEMBERED FOR ITS ACTIVE AND INTENSE SEVERE WEATHER
EPISODES. IT WAS A RECORD BREAKING YEAR FOR TORNADOES WITH A TOTAL
OF 33 OCCURRING ACROSS THE CWA...WHICH INCLUDES 24 COUNTIES IN
NORTHERN INDIANA...5 COUNTIES IN SOUTHERN LOWER MICHIGAN AND 8
COUNTIES IN EXTREME NORTHWEST OHIO. THERE WERE 19 TORNADOES IN THESE
INDIANA COUNTIES...6 IN MICHIGAN AND 8 IN OHIO. THIS IS THE MOST
TORNADOES IN A SINGLE YEAR IN OUR AREA SINCE RECORDS BEGAN IN
1950...SURPASSING 1998 WHICH HAD 30 TORNADOES. THERE WERE ALSO
SEVERAL ROUNDS OF SEVERE WEATHER. IN JUNE ALONE...TWO SEPARATE
SQUALL LINES ABOUT A WEEK APART PRODUCED WIND GUSTS IN EXCESS OF 80
MPH IN PARTS OF THE AREA. THE SECOND EVENT ALSO PRODUCED NUMEROUS
TORNADOES ON JUNE 23RD. A SIGNIFICANT SEVERE WEATHER EPISODE AND
TORNADO OUTBREAK ALSO OCCURRED IN THE FALL ON OCTOBER 26TH.

THE AVERAGE TEMPERATURE AT FORT WAYNE FOR 2010 WAS 52.0
DEGREES...2.1 DEGREES ABOVE NORMAL. THIS TIES 1939...1949...AND 2006
FOR THE 10TH WARMEST YEAR ON RECORD.

PRECIPITATION AT FORT WAYNE FOR 2010 WAS 33.15 INCHES...3.40 INCHES
BELOW NORMAL. THIS RANKS AS THE 46TH DRIEST YEAR ON RECORD. SNOWFALL
FOR THE YEAR WAS 30.7 INCHES...4.4 INCHES BELOW NORMAL.

HERE IS A MONTH BY MONTH SUMMARY OF THE 2010 YEAR...


...JANUARY...


THE NEW DECADE BEGAN WITH A COLD AND RELATIVELY SNOWY START TO 2010.
NORTHEAST INDIANA WAS SPARED FROM THE HEAVIER LAKE EFFECT SNOW THAT
FELL ACROSS NORTHWEST INDIANA. HOWEVER...A DECENT AMOUNT OF SNOW DID
FALL DURING THE FIRST WEEK. FORT WAYNE INTERNATIONAL AIRPORT
RECORDED A RECORD DAILY SNOWFALL ON JANUARY 7TH WHEN 4.1 INCHES OF
SNOW FELL. THIS BROKE THE PREVIOUS RECORD FOR THIS DATE OF 4
INCHES WHICH OCCURRED IN 1918. SNOW AND COLD WEATHER CONTINUED INTO
THE SECOND WEEK OF THE MONTH AS A PERSISTENT AND NEAR RECORD
BLOCKING RIDGE OF HIGH PRESSURE IN THE ATLANTIC OCEAN KEPT A COLD
ARCTIC FLOW OF AIR INTO THE CENTRAL UNITED STATES.

THE BLOCKING PATTERN...WHICH HAD BEEN IN PLACE SINCE EARLY
DECEMBER...FINALLY BEGAN TO BREAK DOWN BY MID MONTH. THE UPPER LEVEL
WEATHER PATTERN BEGAN TO TAKE ON A MORE TYPICAL EL NINO TYPE OF
SPLIT AND ZONAL FLOW...FEATURING WINTER STORMS AFFECTING THE
SOUTHERN UNITED STATES WHILE THE BITTERLY COLD ARCTIC AIR WAS LOCKED
UP ACROSS CENTRAL CANADA. THIS PATTERN WAS FUELED BY A STRONG SUB
TROPICAL JETSTREAM ACROSS THE SOUTHERN UNITED STATES WHILE THE POLAR
JETSTREAM REMAINED BOTTLED UP WELL TO OUR NORTH IN CANADA. THIS
RESULTED IN A DRASTIC CHANGE FROM THE COLD AND SNOWY FIRST PART OF
THE MONTH...TO A MILDER AND DRIER MIDDLE PART OF THE MONTH. IF IT
WERE NOT FOR SEVERAL DAYS OF DENSE FOG AND LOW STRATUS CLOUDS...THE
MIDDLE PART OF THE MONTH WOULD LIKELY HAVE BEEN EVEN WARMER.

THE FINAL WEEK OF JANUARY WAS A RETURN TO A MORE NORMAL LATE JANUARY
PATTERN AS TWO COLD FRONTS SWEPT ACROSS THE AREA AND USHERED IN MUCH
COLDER TEMPERATURES. AFTER THE WARMEST DAY OF THE MONTH ON THE 24TH
FEATURING HIGHS IN THE 50S...A COLD FRONT BROUGHT MODERATE RAINFALL
FOLLOWED BY FALLING TEMPERATURES INTO THE 30S ON THE 25TH. A SECOND
AND MORE POTENT COLD FRONT MOVED THROUGH ON THE 27TH BRINGING LIGHT
SNOW OF 1 TO 3 INCHES AND EVEN COLDER AIR. TEMPERATURES DURING THE
LAST WEEK OF THE MONTH ENDED UP BEING BELOW NORMAL WHICH HELPED
BRING THE MONTHLY AVERAGE DOWN TO JUST BELOW NORMAL.

AT FORT WAYNE...THE AVERAGE HIGH TEMPERATURE FOR JANUARY 2010 WAS
28.9 DEGREES...2.1 DEGREES BELOW THE NORMAL OF 31. THE AVERAGE LOW
TEMPERATURE WAS 17.2 DEGREES...1.1 DEGREES WARMER THAN THE NORMAL OF
16.1 DEGREES. THE AVERAGE TEMPERATURE WAS 23.0 DEGREES...0.6 DEGREES
BELOW NORMAL. THE HIGHEST TEMPERATURE WAS 53 ON THE 24TH WHILE THE
COLDEST TEMPERATURE WAS ZERO ON THE 9TH AND 10TH. 12 DAYS OF THE
MONTH WERE ABOVE NORMAL...WHICH ALL OCCURRED FROM THE 14TH TO THE
25TH...AND 19 DAYS WERE BELOW NORMAL.

PRECIPITATION FOR THE MONTH WAS 0.63 INCHES...1.42 INCHES BELOW
NORMAL. SNOWFALL FOR THE MONTH WAS 7.7 INCHES...2.2 INCHES BELOW
NORMAL. ALL BUT ABOUT 2 INCHES OF THIS SNOW FELL DURING THE FIRST 8
DAYS OF THE MONTH.


...FEBRUARY...


FEBRUARY FELT LIKE A VERY COLD AND SNOWY MONTH TO MANY PEOPLE.
ON THE LARGE SCALE...A STRONG EL NINO CONTINUED IN THE EQUATORIAL
PACIFIC OCEAN WHILE A STRONG BLOCKING PATTERN IN THE MID LEVELS
DOMINATED OVER THE NORTHERN ATLANTIC AND EASTERN CANADIAN PROVINCES.
THIS BLOCKING PATTERN HELPED CREATE A RECORD NEGATIVE ARCTIC
OSCILLATION INDEX...KNOWN AS AO. THIS NEGATIVE AO KEPT AREAS NORTH
OF THE ARCTIC CIRCLE UNSEASONABLY WARM BUT ALLOWED THE COLDER POLAR
AIR TO PLUNGE SOUTH AND KEEP THE MID LATITUDES UNSEASONABLY COLD.
THE COMBINATION OF THESE NORTHERN HEMISPHERIC PATTERNS MADE FOR AN
INTERESTING FEBRUARY AROUND THE ENTIRE UNITED STATES.

THE TYPICAL STRONG SUB TROPICAL JETSTREAM DRIVEN BY EL NINO
CONTINUED TO BRING COOL AND WET WEATHER TO MUCH OF THE SOUTHERN
UNITED STATES. SNOW FELL IN MANY PARTS OF THE DEEP SOUTH...INCLUDING
FLORIDA...ON MORE THAN ONE OCCASION. AS THIS SUB TROPICAL JET AND
ITS STORMS MOVED UP THE EAST COAST...THEY ENCOUNTERED COLD AIR WHICH
WAS IN PLACE THANKS TO THE STRONG RIDGING IN THE NORTHERN ATLANTIC
AND NEGATIVE AO INDEX WHICH HELPED BRING COLDER AIR SOUTH INTO THE
NORTHEAST UNITED STATES. THE CLASH OF THESE TWO HEMISPHERIC DRIVEN
PATTERNS HELPED GENERATE INCREDIBLE SNOW STORMS OVER THE EASTERN
SEABOARD WITH RECORD SNOWFALL IN MANY AREAS SUCH AS WASHINGTON D.C.
AND PHILADELPHIA PA. OUR LOCAL AREA REMAINED ON THE NORTHERN FRINGES
OF THE SUBTROPICAL JET AND THE NEGATIVE ARCTIC OSCILLATION KEPT
SEASONABLY COLD TEMPERATURES LOCKED IN PLACE IN OUR REGION WITH MUCH
COLDER TEMPERATURES FURTHER EAST. THIS HELPED GENERATE MODERATE TO
HEAVY SNOWFALL AT TIMES DURING THE MONTH OVER THE AREA AS WAVES
MOVED ALONG THE SUBTROPICAL JET. THE MOST SNOWFALL FOR THE MONTH
ACTUALLY FELL IN LOCATIONS ACROSS NORTH CENTRAL INDIANA AND
NORTHWEST OHIO.

A LOOK AT THE MONTHLY DATA REVEALS A SEASONABLY COOL MONTH AT FORT
WAYNE WITH BELOW NORMAL TEMPERATURES AND PRECIPITATION BUT ABOVE
NORMAL SNOWFALL. WHILE THERE WERE NO BITTERLY COLD ARCTIC
OUTBREAKS...THE HEMISPHERIC PATTERN DESCRIBED ABOVE DID KEEP A
NORTHERLY FLOW OVER THE REGION FOR MUCH OF THE MONTH WHICH KEPT
TEMPERATURES NEAR OR BELOW NORMAL. THE WARMEST TEMPERATURE WAS JUST
40 DEGREES ON THE 21ST. ONLY TWO OTHER YEARS DATING BACK TO 1897
HAVE SEEN A FEBRUARY WITH ONLY 1 40 DEGREE DAY...1980 AND 1942.
IRONICALLY...THERE WERE ALSO NO DAYS WITH BELOW ZERO
TEMPERATURES...WHICH ACTUALLY IS NOT THAT UNCOMMON. THE COLDEST HIGH
TEMPERATURE FOR THE MONTH WAS ONLY 26 DEGREES...MEANING THE SPREAD
BETWEEN THE WARMEST AND COLDEST HIGH TEMPERATURE ALL MONTH WAS ONLY
14 DEGREES. THERE WERE ONLY 3 DAYS IN WHICH THE LOW TEMPERATURE WAS
IN THE SINGLE DIGITS. THE AVERAGE MONTHLY TEMPERATURE WAS 25.6
DEGREES...1.7 DEGREES BELOW NORMAL. SO WHILE THE MONTH WAS BELOW
NORMAL AND IT FELT COLD...THE ACTUAL DATA SHOWS IT WAS NOT REALLY
THAT COLD...THERE WERE JUST NO WARM PERIODS.

THE RELATIVELY DRY WINTER CONTINUED AS FEBRUARY PRECIPITATION WAS
BELOW NORMAL BY 0.88 INCHES. THE TOTAL PRECIPITATION WAS 1.06
INCHES. SNOWFALL HOWEVER WAS ABOVE NORMAL. THE MONTHLY TOTAL WAS
12.1 INCHES...4.5 INCHES ABOVE NORMAL. THE BIGGEST SNOWFALL OF THE
MONTH OCCURRED ON THE 9TH AND 10TH WHEN 5.2 INCHES WAS
RECORDED...3.9 ON THE 9TH AND 1.3 INCHES ON THE 10TH. THE SNOW DEPTH
AT FORT WAYNE INTERNATIONAL AIRPORT WAS AT LEAST 1 INCH ON 18 DAYS.


...MARCH...


AFTER A RATHER COLD AND DREARY WINTER...MARCH BEGAN METEOROLOGICAL
SPRING WITH SEVERAL SUNNY DAYS AND CLEAR NIGHTS. WHILE THE AVERAGE
TEMPERATURE ON THESE DAYS REMAINED NEAR OR JUST ABOVE NORMAL...THE
WARM EARLY MARCH SUNSHINE MADE IT FEEL VERY COMFORTABLE AFTER THE
LONG AND DREARY WINTER. THE SECOND WEEK OF THE MONTH WAS EVEN WARMER
WITH TEMPERATURES CLIMBING INTO THE 50S AND 60S AND AVERAGE DAILY
TEMPERATURES RANGING FROM 10 TO 20 DEGREES ABOVE NORMAL. THE THIRD
AND FOURTH WEEKS OF THE MONTH WERE NOT NEAR AS WARM AS THE MIDDLE
PORTION...BUT AVERAGE TEMPERATURES WERE GENERALLY ABOVE NORMAL WITH
ONLY A FEW DAYS BELOW NORMAL. THE FINAL DAY OF MARCH ENDED ON A
WARM NOTE WITH HIGH TEMPERATURES FINALLY HITTING THE MAGICAL 70
DEGREE MARK FOR THE FIRST TIME THIS YEAR...REACHING 75 DEGREES.
THERE WERE ONLY 4 DAYS DURING THE MONTH WITH AN AVERAGE TEMPERATURE
BELOW NORMAL.

PRECIPITATION DURING MARCH WAS BELOW NORMAL AND MEASURABLE
PRECIPITATION WAS CONFINED TO JUST 10 DAYS. THERE WAS ALSO NO
SNOWFALL FOR THE ENTIRE MONTH...NOT EVEN A TRACE. THERE HAVE ONLY
BEEN FIVE OTHER YEARS IN WHICH NO MEASURABLE SNOWFALL WAS RECORDED
AT FORT WAYNE IN THE MONTH OF MARCH...2009...1990...1946...1927 AND
1921.

THE AVERAGE TEMPERATURE FOR MARCH WAS 43.3...5.2 DEGREES ABOVE
NORMAL. THE WARMEST TEMPERATURE WAS 75 ON THE 31ST...AND THE
COLDEST TEMPERATURE WAS 21 ON THE 6TH.

PRECIPITATION FOR THE MONTH WAS 2.60 INCHES...0.26 INCHES BELOW
NORMAL. MEASURABLE PRECIPITATION FELL ON 10 DAYS WITH THE GREATEST
24 HOUR PRECIPITATION BEING 0.96 INCHES ON THE 28TH. THERE WAS NO
SNOWFALL MEASURED FOR THE ENTIRE MONTH...WHICH IS 4.7 INCHES BELOW
NORMAL.


...APRIL...


APRIL CONTINUED THE WARM SPRING PATTERN BUT MONTHLY PRECIPITATION
ENDED UP BEING ABOVE NORMAL FOR THE FIRST TIME THIS YEAR. WARM AND
DRY SPRINGS ARE USUALLY TYPICAL DURING EL NINO YEARS. THERE WAS ONLY
A TRACE OF SNOWFALL FOR THE MONTH WITH A FEW FLURRIES IN THE AIR ON
THE 9TH.

THE MONTH BEGAN ON A VERY WARM NOTE WITH HIGHS IN THE LOWER 80S ON
THE FIRST AND SECOND. AVERAGE DAILY TEMPERATURES FOR THESE TWO DAYS
WERE 22 AND 23 DEGREES ABOVE NORMAL RESPECTIVELY. THE COOLEST HIGH
TEMPERATURE DURING THE FIRST 7 DAYS OF THE MONTH WAS 70 DEGREES ON
THE 3RD. A STRONG COLD FRONT MOVED THROUGH THE AREA ON THE 7TH AND
BROUGHT TEMPERATURES BACK DOWN CLOSER TO NORMAL. THE REMAINDER OF
THE MONTH WOULD SEE A REPEATING PATTERN WHICH WOULD BRING WARMER
TEMPERATURES FOR SEVERAL DAYS FOLLOWED BY A COLD FRONT AND COOLER
TEMPERATURES FOR A FEW DAYS.

THE AVERAGE MONTHLY TEMPERATURE AT FORT WAYNE INTERNATIONAL AIRPORT
WAS 56.4 DEGREES...7.9 DEGREES ABOVE NORMAL. THE AVERAGE HIGH
TEMPERATURE WAS 68.7 AND THE AVERAGE LOW WAS 44.0 DEGREES. THE
WARMEST TEMPERATURE WAS 84 ON THE 6TH AND 15TH AND THE COOLEST
TEMPERATURE WAS 32 ON THE 18TH. THERE WERE ONLY 6 DAYS DURING THE
MONTH WITH AN AVERAGE DAILY TEMPERATURE BELOW NORMAL.

PRECIPITATION AT FORT WAYNE WAS ABOVE NORMAL FOR THE MONTH...BUT
JUST BARELY. THERE WERE TWO PERIODS OF DECENT RAINFALL THAT WERE
SPACED CLOSED ENOUGH TO KEEP THE AREA GREEN AND GROWING DURING THE
MONTH. JUST OVER AN INCH AND A QUARTER OF RAINFALL OCCURRED BETWEEN
THE 3RD AND 8TH OF APRIL WITH SCATTERED SHOWERS AND THUNDERSTORMS IN
THE AREA. THE MIDDLE PORTION OF THE MONTH WAS GENERALLY DRY AND
MOISTURE FROM THE GULF OF MEXICO STRUGGLED TO REACH THE NORTHERN
PART OF THE STATE. SEVERAL COLD FRONTS PRODUCED ONLY SPRINKLES OR
VERY LIGHT SHOWERS. DEEPER MOISTURE FROM THE GULF FINALLY MADE IT
BACK TO THE AREA DURING THE PERIOD OF THE 23RD THROUGH THE 26TH.
OVER TWO INCHES OF MUCH NEEDED RAIN FELL DURING THIS PERIOD WITH A
STALLED FRONT AND SLOW MOVING UPPER LEVEL SYSTEM BEING THE FOCUS FOR
THE RAIN. ESSENTIALLY THESE TWO PERIODS ACCOUNTED FOR NEARLY ALL THE
MONTHLY RAINFALL.

PRECIPITATION FOR THE MONTH WAS 3.60 INCHES...0.42 INCHES ABOVE
NORMAL. THIS IS THE FIRST MONTH THIS YEAR WITH MONTHLY PRECIPITATION
TOTALS ABOVE NORMAL AT FORT WAYNE. SNOWFALL FOR THE MONTH WAS A
TRACE...THIS IS 1.1 INCHES BELOW NORMAL.

THE FIRST EPISODE OF SEVERE WEATHER FOR THE SEASON OCCURRED AT THE
BEGINNING OF APRIL FROM THE 5TH TO 7TH. SEVERE THUNDERSTORMS WITH
DAMAGING WINDS PUSHED THROUGH NORTHERN INDIANA AND LEAVING SOME
AREAS DAMAGED IN THEIR WAKE.


...MAY...


MUCH NEEDED RAINFALL OCCURRED OVER THE MONTH OF MAY WITH THE MONTHLY
RAINFALL TOTAL BEING ABOVE NORMAL FOR JUST THE SECOND TIME THIS YEAR.
IT WAS ALSO A RELATIVELY WARM MONTH WITH AVERAGE TEMPERATURES ENDING
ABOVE NORMAL.

THE MONTH BEGAN ON A WARM AND WET NOTE AND THIS WAS BASICALLY THE
TREND FOR NEARLY THE ENTIRE MONTH. NEARLY A HALF INCH OF RAINFALL
OCCURRED ON THE FIRST AND SECOND AND MEASURABLE RAINFALL OCCURRED ON
15 OF THE FIRST 21 DAYS. THERE WERE FOUR SEPARATE RAIN EVENTS IN
WHICH EACH PRODUCED OVER AN INCH OF RAINFALL. CONDITIONS DID BRIEFLY
DRY OUT LATE IN THE MONTH WITH A STRETCH OF NO MEASURABLE
PRECIPITATION FROM MAY 22ND THROUGH THE 29TH. THUNDERSTORMS BROUGHT
ADDITIONAL RAINFALL DURING THE LATTER HALF OF THE MEMORIAL DAY
WEEKEND WITH OVER AN INCH OF RAIN ON MEMORIAL DAY.

HIGH TEMPERATURES EQUALED OR EXCEEDED 90 DEGREES ON 2 DAYS...80
DEGREES ON 12 DAYS...AND 70 DEGREES ON 21 DAYS. HIGH TEMPERATURES
WERE ABOVE 80 DEGREES ON THE LAST 9 DAYS OF THE MONTH. THERE WAS A
BRIEF COOL STRETCH FROM MAY 8TH TO THE 10TH WHERE HIGH TEMPERATURES
REMAINED AT 60 DEGREES OR LESS. THIS COOL STRETCH WAS SHORT LIVED AS
THE HIGH TEMPERATURE ON THE 13TH JUMPED TO 83 DEGREES. THERE WAS A
DIFFERENCE OF 29 DEGREES BETWEEN THE HIGH TEMPERATURES ON THE
12TH...54 DEGREES...AND THE 13TH...83 DEGREES. THE HIGH TEMPERATURE
FROM MAY 23RD THROUGH MAY 31ST WAS AT LEAST 85 DEGREES EACH DAY AND
91 DEGREES ON THE 26TH AND 30TH. DESPITE THE VERY WARM HIGH
TEMPERATURES...MANY NIGHTS WERE COOL WITH LOW TEMPERATURES BELOW
NORMAL. IRONICALLY...10 DAYS IN MAY EXPERIENCED DAILY AVERAGE
TEMPERATURES BELOW NORMAL.

THE AVERAGE MONTHLY TEMPERATURE FOR MAY AT FORT WAYNE INTERNATIONAL
AIRPORT WAS 64.2 DEGREES...3.8 DEGREES ABOVE NORMAL. THE HIGHEST
TEMPERATURE WAS 91 ON THE 26TH AND 30TH...AND THE COLDEST
TEMPERATURE WAS 34 ON THE 10TH. THERE WAS 7.02 INCHES OF
PRECIPITATION...3.27 INCHES ABOVE NORMAL. NO SNOWFALL WAS RECORDED
FOR THE MONTH.


...JUNE...


TEMPERATURES FOR JUNE WERE WELL ABOVE NORMAL AT FORT WAYNE
INTERNATIONAL AIRPORT AND PRECIPITATION WAS ALSO ABOVE NORMAL. IT
WAS A VERY ACTIVE MONTH FOR SEVERE WEATHER AS SEVERAL ROUNDS OF
THUNDERSTORMS CREATED WIDESPREAD DAMAGE AND SEVERAL TORNADOES ACROSS
THE REGION.

THE AVERAGE TEMPERATURE FOR JUNE WAS 73.9 DEGREES WHICH IS 4.2
DEGREES ABOVE NORMAL. THE HIGHEST TEMPERATURE WAS 91 ON THE 26TH AND
THE COOLEST TEMPERATURE WAS A LOW OF 52 ON THE 8TH. THERE WERE 4
DAYS WITH AN AVERAGE TEMPERATURE BELOW NORMAL. THERE WERE NO DAYS
WITH AN AVERAGE TEMPERATURE MORE THAN 10 DEGREES BELOW NORMAL. THE
DAILY AVERAGE TEMPERATURE WAS MORE THAN 10 DEGREES ABOVE NORMAL ON 2
DAYS...THE 11TH AND 12TH. THERE WERE ALSO 4 DAYS WITH A HIGH
TEMPERATURE OF AT LEAST 90. WHILE THE HEAT WAS NOT OPPRESSIVE...THE
HUMIDITY AT TIMES WAS. DEW POINTS...WHICH IS A MEASURE OF MOISTURE
IN THE AIR...REACHED WELL INTO THE 70S ON SEVERAL DAYS THROUGHOUT
THE MONTH. THIS MADE IT FEEL VERY HUMID.

RAINFALL FOR THE MONTH WAS 4.92 INCHES...0.88 INCHES ABOVE NORMAL.
MEASURABLE RAIN FELL ON 18 DAYS IN JUNE. THE GREATEST 24 HOUR
PRECIPITATION WAS ON THE 23RD WHEN 1.46 INCHES FELL. THIS WAS ALSO A
RECORD FOR DAILY RAINFALL ON THE 23RD...BREAKING THE OLD RECORD OF
1.27 SET IN 1917.

SEVERE WEATHER OCCURRED ON SEVERAL DIFFERENT DAYS IN JUNE BUT THE
5TH...18TH AND 23RD PROVED TO BE THE MOST SIGNIFICANT DAYS.
SUPERCELL THUNDERSTORMS DEVELOPED IN THE EVENING OF THE 5TH AND
PRODUCED 8 TORNADOES ACROSS NORTHERN INDIANA...SOUTHWEST LOWER
MICHIGAN AND NORTHWEST OHIO. A VERY SEVERE LINE OF THUNDERSTORMS
MOVED THROUGH NORTHERN INDIANA...SOUTHWEST LOWER MICHIGAN AND
NORTHWEST OHIO DURING THE EARLY EVENING HOURS ON FRIDAY THE 18TH.
STRAIGHT LINE WINDS IN EXCESS OF 80 MPH ROARED ACROSS THE REGION
CREATING WIDESPREAD DAMAGE AND CUTTING POWER TO THOUSANDS OF PEOPLE.
JUST 5 DAYS LATER ON THE 23RD...ANOTHER LINE OF VERY SEVERE
THUNDERSTORMS MOVED ACROSS NEARLY THE SAME AREAS. STRAIGHT LINE
WINDS ONCE AGAIN REACHED OVER 80 MPH...BUT THIS TIME SEVERAL SMALL
SCALE TORNADOES OCCURRED ALONG THE LEADING EDGE OF THESE WINDS
ACROSS NORTHERN INDIANA AND NORTHWEST OHIO. THIS EVENT PRODUCED
ANOTHER 7 TORNADOES.


...JULY...


WARM TEMPERATURES AND VERY HIGH DEW POINTS CONTRIBUTED TO MUGGY
CONDITIONS AND SCATTERED STRONG THUNDERSTORMS DURING THE MONTH.
UNFORTUNATELY MANY OF THESE THUNDERSTORMS MISSED THE IMMEDIATE FORT
WAYNE AREA UNTIL LATER IN THE MONTH.

DEW POINTS...WHICH ARE A MEASURE OF THE AMOUNT OF MOISTURE IN THE
AIR...REACHED WELL INTO THE 70S ON SEVERAL DAYS THIS MONTH WHILE
TEMPERATURES ROSE INTO THE 90S. THIS CREATED VERY MUGGY CONDITIONS
AND HEAT INDICES WELL OVER 100. THE HEAT AND HUMIDITY ALSO HELPED
PROVIDE FUEL FOR THUNDERSTORMS WHICH WERE SCATTERED ACROSS THE
REGION THROUGHOUT THE MONTH. SOME OF THESE THUNDERSTORMS DUMPED OVER
5 INCHES OF RAIN IN AREAS WHILE OTHER LOCATIONS...LIKE FORT
WAYNE...RECEIVED MUCH LESS RAINFALL.

THE AVERAGE MONTHLY TEMPERATURE WAS 77.4 DEGREES...4.0 DEGREES ABOVE
NORMAL. THE AVERAGE HIGH TEMPERATURE WAS 88.0 DEGREES AND THE
AVERAGE LOW TEMPERATURE WAS 66.8 DEGREES. THERE WERE 13 DAYS WITH A
HIGH TEMPERATURE OF 90 DEGREES OR WARMER. JULY AVERAGES ABOUT 7 DAYS
AT OR ABOVE 90 DEGREES IN THE FORT WAYNE AREA. THE HIGHEST
TEMPERATURE WAS 95 ON THE 23RD AND 24TH. THE DAILY HIGH TEMPERATURE
WAS AT OR ABOVE 80 DEGREES EVERY DAY EXCEPT THE FIRST AND LAST DAYS
OF THE MONTH. THE LAST TIME JULY HAD AT LEAST 29 DAYS WITH HIGH
TEMPERATURES AT OR ABOVE 80 DEGREES WAS IN 2008.

PRECIPITATION FOR THE MONTH WAS 2.74 INCHES...0.84 INCHES BELOW
NORMAL. A LARGE PART OF THIS TOTAL...1.55 INCHES...FELL ON THE 24TH
AND 25TH WHEN A STRONG COLD FRONT MOVED THROUGH THE AREA.


...AUGUST...


DESPITE ONLY HAVING 0.08 INCHES OF RAINFALL AT FORT WAYNE DURING THE
LAST HALF OF AUGUST...THE ENTIRE MONTH ENDED UP BEING NEAR NORMAL
FOR PRECIPITATION THANKS TO A COUPLE HEAVY RAIN EVENTS DURING THE
FIRST TWO WEEKS. IT WAS A VERY WARM AND HUMID MONTH WITH SEVERAL
DAYS OF TEMPERATURES AROUND 90 AND UNCOMFORTABLE HUMIDITY.

THE AVERAGE MONTHLY TEMPERATURE WAS 74.5 DEGREES...3.4 DEGREES ABOVE
NORMAL. THE HIGHEST TEMPERATURE WAS 93 ON THE 29TH AND THE LOWEST
TEMPERATURE WAS 49 ON THE 27TH. HIGH TEMPERATURES ONLY REACHED 90
DEGREES ON 4 DAYS BUT REACHED AT LEAST 80 DEGREES ON 28 DAYS AND AT
LEAST 85 DEGREES ON 19 DAYS. THE AVERAGE HIGH TEMPERATURE FOR THE
MONTH WAS 85.0 DEGREES AND THE AVERAGE LOW TEMPERATURE WAS 64.1
DEGREES.

RAINFALL FOR THE MONTH WAS 3.55 INCHES...JUST 0.05 INCHES BELOW
NORMAL. THE RAINFALL TOTAL WAS HELPED BY A COUPLE OF HEAVY RAIN
EVENTS DURING THE FIRST TWO WEEKS OF THE MONTH. 2.11 INCHES OF
RAIN...MORE THAN HALF OF THE MONTHLY TOTAL...FELL ON THE 3RD AND 4TH
OF AUGUST. ANOTHER 1.29 INCHES OF RAIN FELL ON THE 11TH. MEASURABLE
RAINFALL OCCURRED ON JUST 5 DAYS AND THE LAST MEASURABLE RAINFALL
FOR THE MONTH OCCURRED ON THE 21ST.

AUGUST WAS ANOTHER HUMID MONTH. THE DEW POINT...A MEASURE OF THE
AMOUNT OF MOISTURE IN THE AIR...REACHED 70 DEGREES ON 13 DAYS...AND
REACHED AT LEAST 74 DEGREES ON 7 OF THOSE DAYS. THE HIGHEST DEW
POINT WAS 77 DEGREES ON 10TH AND 11TH. THE AIR BEGINS TO FEEL
UNCOMFORTABLE WHEN THE DEW POINT REACHES THE LOWER TO MID 60S AND
REALLY FEELS UNCOMFORTABLE WHEN THE DEW POINT EXCEEDS 70 DEGREES.


...SEPTEMBER...


DRIER THAN NORMAL CONDITIONS THAT BEGAN LATE IN THE SUMMER CONTINUED
THROUGH SEPTEMBER ACROSS NORTHEAST INDIANA AND NORTHWEST OHIO. SOME
AREAS WERE BEGINNING TO EXPERIENCE D0 DROUGHT CONDITIONS...WHICH IS
THE FIRST STAGE OF DROUGHT AND IS CONSIDERED ABNORMALLY DRY. WHILE
THERE WERE SEVERAL DAYS OF MEASURABLE RAINFALL DURING THE
MONTH...ALL BUT ONE OF THE DAILY RAINFALL TOTALS WERE LESS THAN A
QUARTER OF AN INCH.

THE AVERAGE MONTHLY TEMPERATURE AT FORT WAYNE INTERNATIONAL AIRPORT
WAS 65.6 DEGREES...1.5 DEGREES ABOVE NORMAL. THE HIGHEST TEMPERATURE
OF THE MONTH WAS 93 ON THE 21ST AND 23RD. THE LOWEST TEMPERATURE WAS
40 ON THE 27TH. DAILY HIGH TEMPERATURE RECORDS WERE SET ON THE 21ST
AND 22ND AT FORT WAYNE. THE HIGH OF 93 ON THE 21ST TIED THE PREVIOUS
RECORD OF 93 SET IN 1908. THE HIGH OF 93 ON THE 23RD BROKE THE OLD
RECORD OF 88 SET IN 1945.

PRECIPITATION FOR THE MONTH WAS 1.36 INCHES...1.45 INCHES BELOW
NORMAL. DESPITE THIS RELATIVELY DRY MONTH...IT ONLY RANKS AS THE
20TH DRIEST SEPTEMBER ON RECORD.

THE GREATEST SINGLE DAY RAINFALL TOTAL IN SEPTEMBER WAS 0.65 INCHES
ON THE 2ND AND THE GREATEST 24 HOUR PRECIPITATION TOTAL WAS 0.69
INCHES ON THE 1ST AND 2ND. THIS SINGLE RAINFALL EVENT PRODUCED HALF
OF THE ENTIRE MONTHLY RAINFALL TOTAL. THERE WERE 8 DAYS WITH
MEASURABLE RAINFALL OF 0.01 INCHES OR GREATER. FIVE OF THESE DAYS
HAD AT LEAST A TENTH OF AN INCH...AND ONLY 1 DAY HAD MORE THAN A
QUARTER OF AN INCH AND THAT WAS ON THE 2ND.

A LA NINA ADVISORY WAS ISSUED FOR THIS WINTER BY THE CLIMATE
PREDICTION CENTER AS LA NINA CONDITIONS IN THE PACIFIC OCEAN BEGAN
DEVELOPING. A LA NINA OCCURS WHEN EQUATORIAL PACIFIC OCEAN
TEMPERATURES BECOME COOLER THAN NORMAL FOR AN EXTENDED PERIOD OF
TIME.


...OCTOBER...


THE WARM AND DRY FALL SEASON CONTINUED THROUGH OCTOBER AT FORT WAYNE
INTERNATIONAL AIRPORT AND SURROUNDING AREAS. THE ENTIRE AREA
REMAINED IN D0 DROUGHT CONDITIONS...WHICH IS THE FIRST LEVEL OF
DROUGHT MONITORING AND INDICATES ABNORMALLY DRY CONDITIONS. D1
DROUGHT CONDITIONS DEVELOPED TOWARDS THE END OF THE MONTH IN
PORTIONS OF THE AREA...WHICH INDICATES A MODERATE DROUGHT. THERE WAS
SOME DECENT RAINFALL IN AREAS TOWARD THE END OF THE MONTH...BUT NOT
ENOUGH TO MAKE UP SIGNIFICANT DEFICITS THAT HAVE DEVELOPED SINCE THE
LATTER PART OF SUMMER.

THE AVERAGE MONTHLY TEMPERATURE AT FORT WAYNE WAS 55.1 DEGREES...
2.7 DEGREES ABOVE NORMAL. THE WARMEST TEMPERATURE WAS 87 ON THE 10TH
AND THE COLDEST TEMPERATURE WAS 28 ON THE 22ND.

PRECIPITATION CONTINUED TO BE WELL BELOW NORMAL WITH THE MONTHLY
TOTAL BEING JUST 0.58 INCHES...2.05 INCHES BELOW NORMAL. MEASURABLE
PRECIPITATION FELL ON JUST 4 DAYS WITH 0.22 INCHES FALLING ON THE
2ND AND 0.27 INCHES ON THE 26TH. THOSE TWO DATES ACCOUNTED FOR OVER
80 PERCENT OF THE ENTIRE MONTHLY RAINFALL TOTAL. OCTOBER 2010 RANKS
AS THE 6TH DRIEST OCTOBER ON RECORD...AND THE DRIEST SINCE
2005...WHEN ONLY 0.51 INCHES OF PRECIPITATION FELL IN OCTOBER.

SEVERE WEATHER OCCURRED ACROSS THE REGION ON THE 26TH OF OCTOBER AS
AN INTENSE AND RECORD BREAKING STORM SYSTEM DEVELOPED IN THE UPPER
MIDWEST. ONE OF THE LOWEST MEASURED PRESSURE READINGS EVER RECORDED
IN THE UNITED STATES OCCURRED AS LOW PRESSURE DEEPENED TO 955.2
MILLIBARS OVER BIGFORK MINNESOTA. THIS WAS A RECORD FOR MINNESOTA.
THIS INTENSE STORM SYSTEM HELPED DEVELOP A SQUALL LINE OF SEVERE
WEATHER THAT STRETCHED FROM THE GREAT LAKES TO THE GULF COAST AND
MOVED THROUGH OUR AREA ON THE MORNING AND EARLY AFTERNOON OF THE
26TH. NUMEROUS TORNADOES OCCURRED ALONG THE LINE...INCLUDING OVER A
DOZEN ACROSS NORTHERN INDIANA...SOUTHWEST LOWER MICHIGAN AND
NORTHWEST OHIO. ALL OF THESE TORNADOES IN OUR AREA WERE RATED AS EF0
OR EF1 ON THE ENHANCED FUJITA SCALE.


...NOVEMBER...


DRY CONDITIONS THAT HAD BEEN PRESENT ACROSS FORT WAYNE AND VICINITY
THROUGHOUT THE FALL CONTINUED INTO THE FIRST HALF OF NOVEMBER.
HOWEVER...A MORE TYPICAL LA NINA PATTERN DEVELOPED ACROSS THE AREA
THROUGHOUT THE LAST HALF OF THE MONTH. LA NINA IS A PHASE OF THE EL
NINO SOUTHERN OSCILLATION WHERE CENTRAL EQUATORIAL PACIFIC OCEAN SEA
SURFACE TEMPERATURES ARE BELOW NORMAL...WHICH HAS A LARGE INFLUENCE
ON WEATHER PATTERNS ACROSS NORTH AMERICA. TYPICAL LA NINA CONDITIONS
DURING THE LATE FALL AND WINTER MONTHS ACROSS THE AREA INCLUDE
NORMAL OR ABOVE NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
CURRENT FORECASTS SUGGEST THAT LA NINA CONDITIONS WILL CONTINUE INTO
SPRING 2011.

THE AVERAGE MONTHLY TEMPERATURE AT FORT WAYNE WAS 41.1 DEGREES...0.5
DEGREES ABOVE NORMAL. THE WARMEST TEMPERATURE WAS 71 ON THE 13TH...
12TH AND 11TH...AND THE COLDEST TEMPERATURE WAS 19 ON THE 28TH AND 6TH.
ON THE 22ND...THE LOW TEMPERATURE ONLY FELL TO 58 DEGREES. THIS SET
A NEW RECORD FOR THE MAXIMUM LOW TEMPERATURE FOR NOVEMBER
22ND...BREAKING THE PREVIOUS RECORD OF 54 SET ON THAT DAY IN 1927.

PRECIPITATION FOR THE MONTH WAS ABOVE NORMAL...WITH THE MONTHLY
TOTAL BEING 4.01 INCHES...1.03 INCHES ABOVE NORMAL. THIS IS THE
FIRST MONTH WITH ABOVE NORMAL PRECIPITATION SINCE JUNE 2010.
MEASURABLE PRECIPITATION FELL ON 9 DAYS...WITH NEARLY HALF OF THE
MONTHLY PRECIPITATION FALLING ON ONE DAY...WHEN 1.78 INCHES FELL ON
THE 25TH. THIS IS THE HIGHEST DAILY RAINFALL TOTAL AT FORT WAYNE
SINCE 3.24 INCHES OF RAIN FELL ON AUGUST 17TH 2009. NO MEASURABLE
SNOW FELL IN NOVEMBER...WITH SNOWFALL FOR THE MONTH BEING A
TRACE...WHICH IS 3.0 INCHES BELOW NORMAL.

THE 1.87 INCHES OF RAINFALL ON THE 25TH IS THE HIGHEST DAILY
RAINFALL TOTAL FOR NOVEMBER 25TH ON RECORD. THIS VALUE IS THIS
HIGHEST DAILY RAINFALL TOTAL FOR A THANKSGIVING DAY AT FORT WAYNE ON
RECORD. THIS AMOUNT IS ALSO THE 7TH HIGHEST DAILY RAINFALL TOTAL ON
RECORD FOR A DAY IN NOVEMBER. PRIOR TO THE 13TH...ONLY 0.02 INCHES
OF PRECIPITATION FELL IN NOVEMBER. FROM THE 13TH UNTIL THE END OF THE
MONTH...3.99 INCHES OF PRECIPITATION FELL. TO PUT THIS PATTERN
CHANGE IN PERSPECTIVE...ONLY 3.40 INCHES OF PRECIPITATION FELL AT
FORT WAYNE FROM AUGUST 5TH THROUGH NOVEMBER 12TH. MORE RAIN FELL IN
THE LAST 18 DAYS OF THE MONTH THAN THE PREVIOUS 100 DAYS.


...DECEMBER...


DESPITE A MODERATE TO STRONG LA NINA EPISODE IN THE EQUATORIAL
PACIFIC OCEAN...LOCAL WEATHER CONDITIONS WERE NOT TYPICAL OF SUCH AN
EVENT. A LA NINA TENDS TO BRING NORMAL TO ABOVE NORMAL TEMPERATURES
TO OUR AREA WITH A TENDENCY FOR ABOVE NORMAL PRECIPITATION.
HOWEVER...AT FORT WAYNE INTERNATIONAL AIRPORT DURING DECEMBER...BOTH
TEMPERATURE AND PRECIPITATION WERE BELOW NORMAL. HOWEVER...SNOWFALL
FOR THE MONTH WAS ABOVE NORMAL. THIS WAS LIKELY DUE TO THE RETURN OF
A WINTER BLOCKING PATTERN IN THE MIDDLE ATMOSPHERE ACROSS THE
NORTHERN ATLANTIC OCEAN AND THE ARCTIC REGION OF THE NORTHERN
HEMISPHERE. THESE BLOCKING PATTERNS...KNOWN AS THE NORTH ATLANTIC
OSCILLATION...NAO...AND THE ARTIC OSCILLATION...AO...CAN BRING VERY
COLD ARCTIC AIR INTO THE EASTERN UNITED STATES DURING THE WINTER
TIME.

THE AO AND NAO INDICES RETURNED TO STRONGLY NEGATIVE VALUES IN
DECEMBER...SIMILAR TO THOSE SEEN DURING THE 2009...2010 WINTER
SEASON. THE COMBINATION OF AN ACTIVE LA NINA STORM TRACK THROUGH THE
OHIO AND TENNESSEE VALLEY REGIONS COUPLED WITH THE COLD ARCTIC AIR
BEING DRIVEN BY THE NEGATIVE NAO AND AO PATTERN LED TO A COLD
DECEMBER WITH ABOVE NORMAL SNOWFALL OVER MANY PARTS OF THE MIDWEST
AND MID SOUTH. PRECIPITATION FARTHER SOUTH THROUGH THE OHIO VALLEY
REGION WAS GENERALLY ABOVE NORMAL AS THE COLDER AIR FORCED STORM
SYSTEMS FURTHER SOUTH.

THE MONTH WAS DOMINATED BY RATHER PERSISTENT LIGHT SNOW SHOWERS AND
BELOW NORMAL TEMPERATURES. THERE WERE 22 DAYS WITH AT LEAST A TRACE
OF SNOWFALL AND 14 DAYS WITH MEASURABLE SNOWFALL OF AT LEAST A TENTH
OF AN INCH. EACH OF THE FIRST 20 DAYS OF THE MONTH HAD AN AVERAGE
TEMPERATURE BELOW NORMAL AND 11 OF THESE 20 DAYS HAD AN AVERAGE
TEMPERATURE 10 DEGREES OR MORE BELOW NORMAL.

A BRIEF WARM UP OCCURRED AROUND THE 10TH WITH HIGH TEMPERATURES
CLIMBING INTO THE UPPER 30S THROUGH THE 12TH BUT LOW TEMPERATURES
DROPPED INTO THE TEENS. A STRONG STORM SYSTEM BROUGHT BETWEEN A
QUARTER AND HALF INCH RAIN TO THE AREA BEFORE MUCH COLDER ARCTIC AIR
AND SNOW RETURNED IN ITS WAKE.

THE COLD ARTIC AIR REMAINED ACROSS THE AREA THROUGH THE 20TH BEFORE
MODIFYING. TEMPERATURES GRADUALLY WARMED AFTER THE 20TH WITH THE
MAJORITY OF THE LAST 11 DAYS OF THE MONTH EXPERIENCING NEAR NORMAL
AND ABOVE NORMAL TEMPERATURES.

THE AVERAGE MONTHLY TEMPERATURE FOR DECEMBER WAS 23.7 DEGREES...5.3
DEGREES BELOW NORMAL. THIS TIES DECEMBER OF 1960 AS THE 17TH COLDEST
DECEMBER ON RECORD. THE ABOVE NORMAL TEMPERATURES DURING THE LAST 10
DAYS OF THE MONTH SIGNIFICANTLY INCREASED THE OVERALL AVERAGE
MONTHLY TEMPERATURE FOR THE ENTIRE MONTH.

PRECIPITATION AT FORT WAYNE WAS 1.08 INCHES...1.69 INCHES BELOW
NORMAL. THIS RANKS AS THE 19TH DRIEST DECEMBER ON RECORD. SNOWFALL
FOR THE MONTH WAS 10.9 INCHES...2.6 INCHES ABOVE NORMAL. THIS TIES
DECEMBER OF 2003 AS THE 19TH SNOWIEST DECEMBER ON RECORD.

$$

LASHLEY/NDM








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