Climatological Report (Monthly)
Issued by NWS Marquette, MI

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000
CXUS53 KMQT 082047 AAA
CLMMQT

CLIMATE REPORT...PRELIMINARY
NATIONAL WEATHER SERVICE MARQUETTE MI
448 PM EDT MON MAY 8 2017

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

...THE MARQUETTE MI CLIMATE SUMMARY FOR THE MONTH OF APRIL 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1961 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              92   04/22/1980
 LOW               -9   04/06/2003
HIGHEST            71   04/25        46      25       78  04/17
LOWEST             14   04/12        27     -13       -7  04/05
AVG. MAXIMUM     49.8              47.8     2.0     43.5
AVG. MINIMUM     29.8              28.0     1.8     24.2
MEAN             39.8              37.9     1.9     33.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      2               2.6    -0.6        8
DAYS MIN <= 32     24              21.1     2.9       26
DAYS MIN <= 0       0               0.1    -0.1        1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.56   1985
 MINIMUM         0.90   1998
TOTALS           5.40              3.01    2.39     3.83
DAILY AVG.       0.18              0.10    0.08     0.13
DAYS >= .01        14              12.2     1.8       17
DAYS >= .10         9               6.9     2.1        8
DAYS >= .50         6               1.7     4.3        2
DAYS >= 1.00        1               0.6     0.4        1
GREATEST
 24 HR. TOTAL    1.15   04/09 TO 04/10

SNOWFALL (INCHES)
RECORDS
 TOTAL           55.2   2007
                        0
                        0
TOTALS           12.1              14.5    -2.4     40.9
SINCE 7/1       153.1             201.8   -48.7    159.8
SNOWDEPTH AVG.      1                11     -10        7
DAYS >= 1.0         2               3.3    -1.3       10
GREATEST
 SNOW DEPTH         7   04/12                         20  04/10
                        04/11                             04/09
 24 HR TOTAL      9.0   04/11 TO 04/11

DEGREE_DAYS
HEATING TOTAL     748               815     -67      927
 SINCE 7/1       7684              8702   -1018     7790
COOLING TOTAL       0                 1      -1        0
 SINCE 1/1          0                 1      -1        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              MM
HIGHEST WIND SPEED/DIRECTION    MM        DATE   MM
HIGHEST GUST SPEED/DIRECTION    71/225    DATE  04/10

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER             MM
NUMBER OF DAYS FAIR          MM
NUMBER OF DAYS PC            MM
NUMBER OF DAYS CLOUDY        MM

AVERAGE RH (PERCENT)     MM

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               1
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               16     FREEZING RAIN              1
LT FREEZING RAIN          3     HAIL                       1
HEAVY SNOW                1     SNOW                       1
LIGHT SNOW                9     SLEET                      2
FOG                       8     FOG W/VIS <= 1/4 MILE      5
HAZE                      0

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

&&

...APRIL 2017 MONTHLY CLIMATE SUMMARY FOR UPPER MICHIGAN...
/THIS DISCUSSION DOES NOT INCLUDE CHIPPEWA AND MACKINAC COUNTIES/

...ABOVE NORMAL PRECIPITATION AT MOST PLACES...
...RECORD WETTEST APRIL AT MUNISING...
...SECOND WETTEST APRIL AT IRON MOUNTAIN...
...FOURTH WETTEST APRIL AT THE MARQUETTE NWS...
...SEVENTH WETTEST APRIL AT MARQUETTE CITY...
...NINTH WETTEST APRIL AT IRONWOOD...
...TENTH WETTEST APRIL AT HOUGHTON...

...ABOVE NORMAL MONTHLY AVERAGE TEMPERATURE...

...GENERALLY BELOW NORMAL SNOWFALL...

APRIL CLIMATE STATISTICS FOR THE MARQUETTE NWS IN NEGAUNEE TOWNSHIP

                                    NORMAL   DEPARTURE
AVERAGE TEMPERATURE         39.8     37.9   PLUS    1.9
AVERAGE HIGH TEMPERATURE    49.8     47.8   PLUS    2.0
AVERAGE LOW TEMPERATURE     29.8     28.0   PLUS    1.8
HEATING DEGREE DAYS          748      815  MINUS     67
COOLING DEGREE DAYS            0        1  MINUS      1
TOTAL PRECIPITATION         5.40     3.01   PLUS   2.39
TOTAL SNOWFALL              12.1     14.5  MINUS    2.4

HIGHEST TEMPERATURE:                    71 ON 4/25
LOWEST TEMPERATURE:                     14 ON 4/12
GREATEST CALENDAR DAY PRECIPITATION:  1.00 ON 4/10
GREATEST 24 HOUR PRECIPITATION:       1.15 ON 4/9-4/10
GREATEST CALENDAR DAY SNOWFALL:        9.0 ON 4/11
GREATEST 24 HOUR SNOWFALL:             9.0 ON 4/11
GREATEST SNOW DEPTH:                     7 ON 4/11 AND 4/12
PEAK WIND SPEED: 71 MPH FROM THE SOUTHWEST ON 4/10

FOURTH HIGHEST APRIL PRECIPITATION...5.40 (RECORD 6.56...1985)
---------------------------------------------------------------------
      ...AUGUST THROUGH APRIL VERY WARM AT THE MARQUETTE NWS...

                         AVERAGE TEMPERATURE

              OBSERVED NORMAL DEPARTURE     RECORD          RANK
MARQUETTE NWS   37.1    33.8    +3.3    38.5 /2011-12/   2ND WARMEST
---------------------------------------------------------------------
GREAT LAKES WATER LEVELS (FEET/METERS ABOVE MEAN SEA LEVEL)

                             LAKE SUPERIOR  LAKE MICHIGAN-HURON
04/01/17 DAILY MEAN          601.59/183.37     579.29/176.57
04/30/17 DAILY MEAN          602.03/183.50     579.86/176.74
AVG MAR 2017 DAILY MEAN      601.66/183.39     579.17/176.53
AVG APR 2016 DAILY MEAN      601.96/183.48     579.94/176.77
LONG TERM APR DAILY MEAN     601.25/183.26     578.67/176.38
MAXIMUM APR DAILY MEAN       602.62/183.68     581.46/177.23
                                 (1986)           (1986)
MINIMUM APR DAILY MEAN       599.48/182.72     576.15/175.61
                                 (1926)           (1964)

...WATER LEVELS RISE AND REMAIN ABOVE NORMAL IN APRIL...

RUNOFF FROM MELTING SNOW AND MODERATE TO HEAVY PRECIPITATION DURING
THE MONTH RESULTED IN RISING WATER LEVELS IN APRIL. AT THE END OF
APRIL, WATER LEVELS ON LAKE SUPERIOR WERE 2 TO 3 INCHES ABOVE NORMAL
AND NEAR THE SAME LEVEL OBSERVED IN APRIL 2016. THE LEVEL ON LAKES
MICHIGAN AND HURON WERE 4 TO 5 INCHES ABOVE NORMAL AND ALSO NEAR THE
LEVEL OBSERVED THE PREVIOUS APRIL.

OBTAIN GREAT LAKES WATER LEVEL DATA AS REPORTED BY THE U.S. ARMY
CORPS OF ENGINEERS AT

HTTP://WWW.LRE.USACE.ARMY.MIL/MISSIONS/GREATLAKESINFORMATION/
       GREATLAKESWATERLEVELS/CURRENTCONDITIONS.ASPX.
---------------------------------------------------------------------
                       APRIL CLIMATE HIGHLIGHTS

HIGHEST REPORTED TEMPERATURE...76 AT KENTON IN HOUGHTON COUNTY
                                ON 4/25

LOWEST REPORTED TEMPERATURE...12 AT CLARKSBURG IN MARQUETTE COUNTY,
                               STAMBAUGH IN IRON COUNTY, AND NEAR
                               COVINGTON IN BARAGA COUNTY ON 4/12

HIGHEST AVERAGE TEMPERATURE...43.8 DEGREES AT NORWAY IN DICKINSON
                               COUNTY

LOWEST AVERAGE TEMPERATURE...37.5 DEGREES AT HERMAN IN BARAGA COUNTY

HIGHEST MONTHLY PRECIPITATION...6.27 INCHES AT IRON MOUNTAIN

LOWEST MONTHLY PRECIPITATION...2.10 INCHES AT NEWBERRY

HIGHEST MONTHLY SNOWFALL...15.5 INCHES AT ATLANTIC MINE IN HOUGHTON
                            COUNTY

LOWEST MONTHLY SNOWFALL...TRACE AT SEVERAL SITES NEAR THE BAY OF
                           GREEN BAY AND LAKE MICHIGAN

GREATEST MONTHLY SNOW DEPTH...21 INCHES AT GRAND MARAIS IN ALGER
                               COUNTY ON 4/1

WHILE THE THE WEATHER DURING THE FIRST WEEK OF APRIL TENDED TO BE
RELATIVELY UNEVENTFUL AND DRY OVER UPPER MICHIGAN, A MORE WET,
ACTIVE PATTERN DOMINATED THE LAST THREE WEEKS OF THE MONTH AS
NUMEROUS DISTURBANCES EMBEDDED IN A FAST WEST-TO-SOUTHWEST FLOW
ALOFT BETWEEN AN UPPER TROUGH OVER THE WEST AND SOME RIDGING OVER
THE SOUTHEAST STATES IMPACTED THE UPPER GREAT LAKES. AS A RESULT,
MONTHLY PRECIPITATION ENDED UP ABOVE TO WELL ABOVE NORMAL AT MOST
PLACES, ESPECIALLY OVER THE CENTRAL U.P. PRECIPITATION TOTALS OF 5
INCHES OR MORE WERE COMMON IN A SWATH FROM WATERSMEET IN GOGEBIC
COUNTY AND NORWAY IN DICKINSON COUNTY TO NEAR MARQUETTE AND
MUNISING. IRON MOUNTAIN LED REPORTING STATIONS WITH 6.27 INCHES OF
WATER EQUIVALENT PRECIPITATION, THE SECOND HIGHEST APRIL TOTAL ON
RECORD AND ABOUT 265 PERCENT OF THE MONTHLY NORMAL FOR THAT SITE.
THE 6.18 INCHES THAT FELL ON MUNISING WAS AN APRIL RECORD AND 280
PERCENT OF NORMAL. MOST PLACES EXPERIENCED A TOP TEN WETTEST APRIL
IN 2017. THE ONLY AREA THAT TENDED TO MISS OUT ON THE HEAVIER
PRECIPITATION WAS OVER THE EAST. NEWBERRY MEASURED ONLY 2.10 INCHES,
JUST A BIT BELOW THEIR APRIL MEAN.

AS HAS BEEN THE CASE FOR THE PAST COUPLE OF MONTHS, THE APRIL 2017
WEATHER PATTERN ACROSS THE UPPER GREAT LAKES WAS A CHANGEABLE ONE IN
TERMS OF TEMPERATURES. MOST OF THE FIRST HALF OF THE MONTH WAS
WARMER THAN NORMAL, BUT THE SECOND HALF OF APRIL THEN TURNED COOLER
THAN AVERAGE MOST OF THE TIME. SINCE THE WARMER TEMPERATURE
ANOMALIES WERE MORE EXTREME, THE OBSERVED MEAN APRIL AVERAGE
TEMPERATURE BETWEEN 37 AND 44 DEGREES ENDED UP 1 TO 3 DEGREES ABOVE
NORMAL ACROSS THE UPPER PENINSULA. APRIL ON AVERAGE ENDED UP 13 TO
17 DEGREES WARMER THAN MARCH 2017.

AT LEAST ONE SPOT IN UPPER MICHIGAN SAW THE THERMOMETER DIP INTO THE
TEENS DURING THE EARLY MORNINGS ON 4/7, 4/8 AND 4/12. READINGS
PEAKED IN THE 70S ON 4/8, 4/9, 4/22 AND 4/25. DURING THE COLDER
TIMES WHEN SKIES WERE CLOUDY AND SNOW WAS FALLING OVER MAINLY THE
NORTHWEST HALF OF THE UPPER PENINSULA, A FEW PLACES REPORTED A
MAXIMUM TEMPERATURE NO HIGHER THAN THE 20S ON 4/11 AND 4/27.

THE FIRST SIGNIFICANT WEATHER EVENT OF THE MONTH OCCURRED FROM THE
EVENING ON 4/9 INTO THE EARLY MORNING HOURS OF 4/10. AS A COLD FRONT
STALLED OVER THE UPPER GREAT LAKES, AN APPROACHING DISTURBANCE
EMBEDDED IN THAT WEST-TO-SOUTHWEST FLOW ALOFT TRIGGERED AN AREA OF
SHOWERS AND SOME THUNDERSTORMS. SOME OF THE THUNDERSTORMS TURNED
SEVERE OVER THE CENTRAL COUNTIES, PRODUCING SOME DAMAGING WINDS AND
LARGE HAIL. THE NATIONAL WEATHER SERVICE OFFICE IN NEGAUNEE TOWNSHIP
IN MARQUETTE COUNTY REPORTED A PEAK WIND OF 71 MPH. TREES DOWNED BY
THESE DAMAGING WINDS FELLED POWER LINES, RESULTING IN POWER OUTAGES
THAT LASTED FOR A FEW DAYS AT SOME LOCATIONS. HAIL AS LARGE AS GOLF
BALLS FELL NEAR LITTLE LAKE IN MARQUETTE COUNTY. THERE WAS ALSO SOME
HEAVY RAIN, WITH OVER AN INCH OF PRECIPITATION FALLING AT SOME
LOCATIONS. STAMBAUGH IN IRON COUNTY LOGGED THE MOST RAIN WITH 1.57
INCHES.

IN THE WAKE OF THE DISTURBANCE RESPONSIBLE FOR THE STORMS, THE
STALLED FRONT SLIPPED JUST TO THE SOUTH INTO THE CENTRAL GREAT LAKES
LATER ON 4/10. AS ANOTHER DISTURBANCE AND WAVE OF LOW PRESSURE MOVED
NORTHEAST ALONG THIS BOUNDARY, A WINTRY MIX OF SNOW, SLEET, FREEZING
RAIN AND RAIN OVERSPREAD ALL BUT NORTHWEST UPPER MICHIGAN DURING THE
EARLY MORNING ON 4/11. BY THE TIME THE PRECIPITATION ENDED AROUND
MID-DAY ON 4/11, OVER 6 INCHES OF WET SNOW HAD FALLEN AT MANY PLACES
ACROSS THE CENTRAL FROM NEAR IRON RIVER TO NEGAUNEE. AMASA IN IRON
COUNTY AS WELL AS NEGAUNEE AND ISHPEMING IN MARQUETTE COUNTY WERE
BURIED UNDER 10 INCHES OF THE WHITE STUFF. MOST PLACES PICKED UP
0.50 TO 1.00 INCH OF WATER EQUIVALENT PRECIPITATION. THE ONLY
EXCEPTION WAS OVER THE NORTHWEST, WHERE LESS THAN 0.10 INCH OF
PRECIPITATION AND LITTLE IF ANY SNOW FELL ACROSS THE KEWEENAW.

AN AREA OF SHOWERS AHEAD OF A LOW PRESSURE SYSTEM AND WARM FRONT
APPROACHING FROM THE SOUTHWEST ARRIVED DURING THE NIGHT ON 4/14-4/15
AND THEN OVERSPREAD THE REST OF UPPER MICHIGAN DURING THE DAY ON
4/15. BY THE TIME THE SHOWERS AND EVEN A FEW THUNDERSTORMS
DIMINISHED IN THE EVENING, MOST PLACES HAD PICKED UP AT LEAST 0.25
TO 0.50 INCH OF RAIN. IRONWOOD REPORTED THE MOST WITH 1.11 INCHES.
ONCE AGAIN, THE KEWEENAW MISSED OUT ON THE HEAVIER PRECIPITATION AND
SAW UNDER 0.25 INCH. AFTER THE RAIN DIMINISHED, SOME LOCALLY DENSE
FOG FORMED AND PERSISTED INTO THE MORNING ON 4/16, EASTER SUNDAY.

DURING THE NIGHT ON 4/19-4/20, RAIN, MIXED WITH SNOW OVER THE HIGHER
TERRAIN OF THE NORTHWEST HALF, DEVELOPED OVER THE U.P. IN ADVANCE OF
THE NEXT LOW PRESSURE MOVING FROM THE PLAINS TOWARD THE WESTERN
GREAT LAKES. THIS PRECIPITATION CONTINUED THROUGH 4/20 BEFORE
DIMINISHING IN THE AFTERNOON OVER THE SOUTH AND THE EVENING ACROSS
THE NORTH. A NUMBER OF LOCATIONS PICKED UP AN INCH OR MORE OF LIQUID
EQUIVALENT PRECIPITATION, WITH AS MUCH AS 1.65 INCHES FALLING AT
IRON MOUNTAIN. WHERE THERE WAS ACCUMULATING WET SNOW OVER THE HIGHER
TERRAIN OF THE NORTHWEST, ATLANTIC MINE IN HOUGHTON COUNTY REPORTED
5.0 INCHES ACCUMULATION.

THERE WAS ANOTHER ROUND OF HEAVY PRECIPITATION FROM EARLY ON 4/26
INTO 4/28 AS A PAIR OF LOW PRESSURE SYSTEMS, ASSOCIATED WITH
DISTURBANCES MOVING THROUGH THE SOUTHWEST FLOW ALOFT BETWEEN A
DEEPENING TROUGH OVER THE WEST AND UPPER RIDGING ACROSS THE EAST,
MOVED ALONG A NEARLY STATIONARY FRONT ALIGNED SOUTH TO NORTH OVER
THE WEST CENTRAL GREAT LAKES. THE PRECIPITATION WAS A WINTRY MIX OF
SNOW, SLEET, FREEZING RAIN AND RAIN OVER THE WEST THAT TENDED TO
CHANGE TO ALL SNOW ON 4/27 AS COLDER AIR SURGED INTO THE AREA. BY
THE TIME LINGERING SNOW SHOWERS ENDED ON 4/28, MANY LOCATIONS ACROSS
THE WEST HAD PICKED UP OVER 2 INCHES OF WATER EQUIVALENT
PRECIPITATION. GREENLAND IN ONTONAGON COUNTY HAD THE HIGHEST TOTAL
AT 2.43 INCHES. ATLANTIC MINE HAD THE MOST SNOW AGAIN WITH 7.0
INCHES. GREENLAND AND HOUGHTON WERE CLOSE BEHIND WITH 5.3 INCHES AND
5.0 INCHES RESPECTIVELY DURING THIS EVENT.
---------------------------------------------------------------------
 ...AUGUST THROUGH APRIL VERY WARM AND WET ACROSS UPPER MICHIGAN...

         ...TOP 5 WARMEST AND 20 WETTEST AT MOST PLACES...

                         AVERAGE TEMPERATURE

              OBSERVED NORMAL DEPARTURE    RECORD           RANK
MANISTIQUE      40.0    36.5    +3.5   39.8 /2011-12/ RECORD WARMEST

HOUGHTON        38.8    34.5    +4.3   39.3 /2011-12/    2ND WARMEST

IRON MOUNTAIN   39.4    35.8    +3.6   40.3 /2011-12/    2ND WARMEST

NEWBERRY        39.8    36.3    +3.5   41.0 /2011-12/    2ND WARMEST

MARQUETTE NWS   37.1    33.8    +3.3   38.5 /2011-12/    2ND WARMEST

MUNISING        39.1    36.6    +2.5   40.0 /2011-12/    3RD WARMEST

MARQUETTE CITY  40.7    37.9    +2.8   43.2 /1877-88/    5TH WARMEST

IRONWOOD        36.8    33.5    +3.3   38.5 /2011-12/    7TH WARMEST

                            PRECIPITATION

              OBSERVED NORMAL DEPARTURE     RECORD          RANK
MANISTIQUE     28.00   21.45    +6.55  32.59 /1978-79/   4TH HIGHEST

IRON MOUNTAIN  25.74   19.75    +5.99  29.75 /1995-96/   4TH HIGHEST

MARQUETTE CITY 26.76   21.10    +5.66  34.76 /1988-89/  12TH HIGHEST

HOUGHTON       30.69   20.22   +10.47  38.16 /1985-86/  15TH HIGHEST

IRONWOOD       28.41   24.04    +4.37  33.05 /2015-16/  15TH HIGHEST

MARQUETTE NWS  28.85   26.95    +1.90  36.97 /1985-86/  16TH HIGHEST

NEWBERRY       27.54   25.52    +2.02  42.42 /2001-02/  17TH HIGHEST

**** RANK NOT IN TOP 25
---------------------------------------------------------------------
SOME OTHER TEMPERATURE AND PRECIPITATION OBSERVATIONS ACROSS UPPER
MICHIGAN IN APRIL 2017 INCLUDE:

IRONWOOD...AVERAGE TEMPERATURE 40.3 /1.0 DEGREE ABOVE NORMAL/
           PRECIPITATION 4.67 INCHES /2.03 INCHES ABOVE NORMAL/
           SNOWFALL 5.6 INCHES /5.8 INCHES BELOW NORMAL/

WATERSMEET (GOGEBIC COUNTY)...PRECIPITATION 5.11 INCHES
                              SNOWFALL 5.6 INCHES

GREENLAND (ONTONAGON COUNTY)...AVERAGE TEMPERATURE 40.0 DEGREES
                               PRECIPITATION 4.37 INCHES
                               SNOWFALL 5.8 INCHES

BERGLAND DAM (ONTONAGON COUNTY)...AVERAGE TEMPERATURE 39.7 DEGREES
                                  PRECIPITATION 5.16 INCHES
                                  SNOWFALL 6.8 INCHES

HOUGHTON COUNTY...AVERAGE TEMPERATURE 40.6 (2.6 DEGREES ABOVE NORMAL)
AIRPORT           PRECIPITATION 4.20 INCHES (2.36 INCHES ABOVE
NORMAL)                   SNOWFALL 8.6 INCHES (0.8 INCH ABOVE NORMAL)

ATLANTIC MINE (HOUGHTON COUNTY)...PRECIPITATION 4.90 INCHES
                                  SNOWFALL 15.5 INCHES

PAINESDALE (HOUGHTON COUNTY)...SNOWFALL 11.3 INCHES

COPPER HARBOR...AVERAGE TEMPERATURE 39.8 DEGREES
                PRECIPITATION 3.76 INCHES
                SNOWFALL 1.0 INCH

JACOBSVILLE (HOUGHTON COUNTY)...AVERAGE TEMPERATURE 38.5 DEGREES
                                PRECIPITATION 4.91 INCHES
                                SNOWFALL 3.9 INCHES

BARAGA...AVERAGE TEMPERATURE 41.3 DEGREES
         PRECIPITATION 4.00 INCHES
         SNOWFALL 2.5 INCHES

HERMAN (BARAGA COUNTY)...AVERAGE TEMPERATURE 37.5 DEGREES
                         PRECIPITATION 4.27 INCHES
                         SNOWFALL 12.0 INCHES

CLARKSBURG (MARQUETTE COUNTY)...AVERAGE TEMPERATURE 38.8 DEGREES
                                PRECIPITATION 3.55 INCHES
                                SNOWFALL 5.3 INCHES

BIG BAY (MARQUETTE COUNTY)...PRECIPITATION 4.97 INCHES
                             SNOWFALL 8.5 INCHES

MARQUETTE CITY...AVERAGE TEMPERATURE 41.0 (0.9 DEGREE ABOVE NORMAL)
                 PRECIPITATION 4.54 INCHES (2.09 INCHES ABOVE NORMAL)
                 SNOWFALL 7.3 INCHES (0.2 INCH BELOW NORMAL)

CHATHAM (ALGER COUNTY)...AVERAGE TEMPERATURE 40.6 DEGREES
                         PRECIPITATION 5.25 INCHES
                         SNOWFALL 2.5 INCHES

MUNISING...AVERAGE TEMPERATURE 40.0 (1.0 DEGREE ABOVE NORMAL)
           PRECIPITATION 6.18 INCHES (3.98 INCHES ABOVE NORMAL)
           SNOWFALL 4.1 INCHES /3.5 INCHES BELOW NORMAL/

NEWBERRY...AVERAGE TEMPERATURE 41.8 (1.9 DEGREES ABOVE NORMAL)
           PRECIPITATION 2.10 INCHES (0.12 INCH BELOW NORMAL)
           SNOWFALL 0.5 INCH (6.6 INCHES BELOW NORMAL)

STAMBAUGH (IRON COUNTY)...AVERAGE TEMPERATURE 39.8 DEGREES
                          PRECIPITATION 6.25 INCHES
                          SNOWFALL 8.8 INCHES

AMASA (IRON COUNTY)...PRECIPITATION 5.90 INCHES
                      SNOWFALL 13.0 INCHES

FORD AIRPORT...AVERAGE TEMPERATURE 43.3 DEGREES
 NEAR IRON MOUNTAIN

IRON MOUNTAIN...AVERAGE TEMPERATURE 43.4 (1.9 DEGREES ABOVE NORMAL/
                PRECIPITATION 6.27 INCHES /3.91 INCHES ABOVE NORMAL/
                SNOWFALL 1.0 INCH /3.6 INCHES BELOW NORMAL/

NORWAY (DICKINSON COUNTY)...AVERAGE TEMPERATURE 43.8 DEGREES
                    PRECIPITATION 6.19 INCHES
                    SNOWFALL 1.0 INCH

DAGGETT (MENOMINEE COUNTY)...PRECIPITATION 4.68 INCHES

ESCANABA...PRECIPITATION 3.17 INCHES
           SNOWFALL TRACE

GLADSTONE (DELTA COUNTY)...PRECIPITATION 4.42 INCHES
                           SNOWFALL 0.4 INCH

GARDEN CORNERS (DELTA COUNTY)...AVERAGE TEMPERATURE 41.0 DEGREES
                                PRECIPITATION 3.97 INCHES
                                SNOWFALL TRACE

COOKS (SCHOOLCRAFT COUNTY)...PRECIPITATION 3.56 INCHES
                             SNOWFALL 0.4 INCH

MANISTIQUE...AVERAGE TEMPERATURE 40.3 /1.5 DEGREES ABOVE NORMAL/
             PRECIPITATION 3.04 INCHES /0.65 INCH ABOVE NORMAL/
             SNOWFALL TRACE /2.6 INCHES BELOW NORMAL/
---------------------------------------------------------------------
                            MAY FORECAST

THE CLIMATE PREDICTION CENTER (CPC) IS FORECASTING A GREATER THAN
CLIMATOLOGICAL CHANCE OF A BELOW NORMAL MONTHLY MEAN TEMPERATURE BUT
EQUAL CHANCES OF ABOVE AND BELOW NORMAL MONTHLY PRECIPITATION ACROSS
ALL OF UPPER MICHIGAN IN MAY 2017.

                           MAY CLIMATOLOGY

MAY BRINGS A CONTINUED MODERATION IN TEMPERATURE AS DAYLIGHT
CONTINUES TO LENGTHEN. POSSIBLE SUNSHINE INCREASES FROM 863 MINUTES
ON 5/1 TO 932 MINUTES ON 5/31. THE AVERAGE TEMPERATURE IN MAY IS 12
TO 13 DEGREES HIGHER THAN IN APRIL. ALTHOUGH AVERAGE HIGH
TEMPERATURES REACH AROUND 70 BY MEMORIAL DAY OVER INLAND AREAS...
THE RELATIVELY COLD WATERS OF THE GREAT LAKES OFTEN KEEP SHORE
COMMUNITIES UP TO 20 DEGREES COOLER IN THE AFTERNOON. MORNING
TEMPERATURES FREQUENTLY SLIP BELOW FREEZING AT THE BEGINNING OF
MAY...BUT AVERAGE LOW TEMPERATURES RISE ABOVE 40 AFTER MID MONTH.

THE INCREASE IN AVERAGE TEMPERATURE RESULTS IN A GREATER THREAT OF
SHOWERS AND THUNDERSTORMS. AVERAGE PRECIPITATION IS 10 TO 40 PERCENT
HIGHER THAN IN APRIL...WITH THE GREATEST AMOUNTS MOST LIKELY NEAR
THE WISCONSIN BORDER WHERE THE STABILIZING INFLUENCE OF THE GREAT
LAKES IS LESS.

MAY IS GENERALLY A TEMPERATE MONTH...BUT WINTER CHILL IS STILL
POSSIBLE. ALTHOUGH AVERAGE TEMPERATURES RISE SHARPLY...FROST OFTEN
OCCURS AT THE END OF MAY AS RECORD LOW TEMPERATURES REMAIN BELOW
FREEZING THE ENTIRE MONTH AT MANY LOCATIONS. NEWBERRY SAW THE
MERCURY PLUNGE ALL THE WAY TO 19 AS LATE AS 5/24...IN 1925. MAY 1997
GOES DOWN IN THE RECORD BOOKS AS ONE OF THE COLDEST EVER AT ALL
REPORTING STATIONS WITH MONTHLY TEMPERATURES AS MUCH AS SEVEN TO
EIGHT DEGREES BELOW NORMAL. IN FACT...THIS MONTH IS THE COLDEST
FIFTH MONTH EVER AT MANISTIQUE (AVERAGE TEMPERATURE 44.4)...IRON
MOUNTAIN (45.9) AND ONTONAGON (46.6) AS WELL AS IN THE TOP TEN
COLDEST AT MOST OTHER UPPER MICHIGAN LOCATIONS. EVEN MORE
RECENTLY...MAY 2002 LANDED IN THE LIST OF TOP TEN COLDEST. MONTHLY
TEMPERATURES IN MAY 2002 AVERAGED 5 TO 7 DEGREES BELOW NORMAL AT
MOST SITES. AT MUNISING...THE MERCURY AVERAGED 9 DEGREES BELOW
NORMAL (41.5) AND THE MONTH GOES DOWN IN THE RECORD BOOKS AS THE
COLDEST MAY EVER. AT STATIONS WITH A LONGER TERM RECORD...MAY 1954
STANDS OUT AS VERY CHILLY...IN FACT THE COLDEST EVER AT THE HOUGHTON
COUNTY AIRPORT (41.8)...WHEN MONTHLY TEMPERATURES FELL OVER EIGHT
DEGREES BELOW NORMAL.

SNOW CAN STILL PLAGUE UPPER MICHIGAN DURING MAY. A LATE SEASON
SNOWSTORM OCCURRED IN CENTRAL UPPER MICHIGAN ON 5/9-5/10/90...WHEN
AN IMPRESSIVE 22.4 INCHES OF HEAVY WET SNOW FELL AT THE MARQUETTE
NWS...11 INCHES BLANKETED IRON MOUNTAIN...AND 7 INCHES FELL ON
MUNISING. DURING THE CHILLY MAY 1997...13 INCHES OF THE WHITE STUFF
ACCUMULATED AT ONTONAGON ON 5/12 AND 11.3 INCHES SMOTHERED IRONWOOD.
NEWBERRY WAS STRUCK BY AN EVEN LATER MAY SNOWSTORM...10 INCHES
ACCUMULATED THERE ON 5/23 AND 5/24 BACK IN 1917. MEASURABLE SNOW AS
LATE AS MEMORIAL DAY IS NOT UNPRECEDENTED...IRONWOOD RECORDED 3.7
INCHES OF SNOW ON 5/28/65.

ALTHOUGH SNOW CAN STILL FALL IN MAY...SPRING HEAT WAVES CAN ALSO
BRING MID SUMMER HEAT TO UPPER MICHIGAN. ON 5/31 IN 1934...BOTH IRON
MOUNTAIN AND IRONWOOD RECORDED MONTHLY RECORD 100 DEGREE HIGH
TEMPERATURES. RECORD HIGH TEMPERATURES ARE IN THE 90S EVERYWHERE BY
MONTHS` END...EXCEPT AT MANISTIQUE WHERE A SOUTHERLY FLOW OFF LAKE
MICHIGAN OFTEN KEEPS AFTERNOON MAXIMUM TEMPERATURES FROM GETTING AS
HIGH AS FARTHER INLAND. MAY 1977 AND 1998 ARE THE WARMEST MAYS IN
RECENT MEMORY. MAY 1977 IS THE WARMEST ON RECORD AT IRON MOUNTAIN
(62.4)...THE MARQUETTE NWS (59.4)...THE HOUGHTON COUNTY AIRPORT
(58.1) AND MUNISING (57.5). MAY 1998 GOES DOWN IN THE RECORD BOOKS
AS THE WARMEST ON RECORD AT NEWBERRY (59.1) AND IN THE TOP FIVE
WARMEST AT MANY OTHER PLACES. MAY 2000 SAW A VERY SUMMERLIKE WEEK IN
THE EARLY PART OF THE MONTH...AND TEMPERATURES AVERAGED 20 DEGREES
ABOVE NORMAL AT MANY LOCATIONS BETWEEN 5/3 AND 5/8. BARAGA SAW THE
MERCURY REACH 90 ON 5/5/2000...AND THE MARQUETTE NWS BROKE FOUR
DAILY RECORD HIGH TEMPERATURES DURING THAT 6-DAY STRETCH. IN FACT...
THE WEEK BETWEEN 5/3/00 AND 5/8/00 IS THE WARMEST 6-DAY PERIOD ON
RECORD IN EARLY MAY AT THE MARQUETTE NWS. MORE RECENTLY...MAY 2010
FEATURED A MEAN MONTHLY AVERAGE TEMPERATURE 3 TO 5 DEGREES ABOVE
NORMAL.

                         OUTLOOK FOR SUMMER

THE CLIMATE PREDICTION CENTER (CPC) IS FORECASTING A GREATER THAN
CLIMATOLOGICAL CHANCE OF AN ABOVE NORMAL 3-MONTH AVERAGE TEMPERATURE
AND BELOW NORMAL 3-MONTH PRECIPITATION ACROSS ALL OF UPPER MICHIGAN
IN JUNE THROUGH AUGUST 2017.
---------------------------------------------------------------------

GO TO HTTP://WWW.WEATHER.GOV/CLIMATE/L3MTO.PHP TO ACCESS DETAILED
LOCAL THREE-MONTH AVERAGE TEMPERATURE OUTLOOKS FOR A NUMBER OF SITES
IN UPPER MICHIGAN.

CHECK OUT HTTP://WWW.CPC.NCEP.NOAA.GOV FOR MORE INFORMATION ABOUT
THE CLIMATE PREDICTION CENTER AND MORE LONG RANGE PREDICTIONS.

NOTE THAT STATISTICS FOR THE NATIONAL WEATHER SERVICE OFFICE IN
NEGAUNEE TOWNSHIP ARE BASED ON RECORDS WHICH BEGAN IN OCTOBER 1961.
THIRTY YEAR NORMALS USED ARE FOR THE PERIOD OF 1981 THROUGH 2010.
NOTE ALL TEMPERATURES ARE IN FAHRENHEIT AND PRECIPITATION IS IN
INCHES. ALL CLIMATE DATA LISTED IN THIS PRODUCT ARE UNOFFICIAL. FOR
OFFICIAL DATA...PLEASE REFER TO THE NATIONAL CLIMATIC DATA CENTER.
ALSO NOTE THIS DISCUSSION DOES NOT INCLUDE DATA FROM CHIPPEWA AND
MACKINAC COUNTIES.

THE NWS MARQUETTE WEB PAGE IS AT HTTP://WWW.WEATHER.GOV/MQT (ALL
LOWER CASE). CONTACT THE NATIONAL CLIMATIC DATA CENTER AT (828) 271-
4800 OR WWW.NCDC.NOAA.GOV.

$$
KC



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