Climatological Report (Monthly)
Issued by NWS

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CXUS53 KGRR 012327 CCA
CLMLAN

CLIMATE REPORT...WITH NARRATIVE
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
625 PM EST WED FEB 1 2017

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

...THE LANSING MI CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1864 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              66   01/24/1967
 LOW              -29   01/04/1981
HIGHEST            56   01/21        49       7       49  01/31
LOWEST              4   01/07        -8      12        5  01/19
                        01/06
AVG. MAXIMUM     34.4              30.1     4.3     31.7
AVG. MINIMUM     23.6              16.8     6.8     19.7
MEAN             29.0              23.4     5.6     25.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     12              18.1    -6.1       16
DAYS MIN <= 32     21              27.6    -6.6       29
DAYS MIN <= 0       0               4.0    -4.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.39   2005
 MINIMUM         0.24   2003
TOTALS           3.65              1.65    2.00     1.45
DAILY AVG.       0.12              0.05    0.07     0.05
DAYS >= .01        19              13.4     5.6       15
DAYS >= .10        10               4.5     5.5        5
DAYS >= .50         2               0.8     1.2        1
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    0.83   01/16 TO 01/17

SNOWFALL (INCHES)
RECORDS
 TOTAL           34.6   1999
 24 HR TOTAL     20.4   01/26/1967 TO 01/27/1967
 SNOW DEPTH        24   01/28/1978
                        01/27/1978
TOTALS            9.1              13.8    -4.7      7.8
SINCE 7/1        25.2              30.6    -5.4     17.9
SNOWDEPTH AVG.      0                 4      -4        1
DAYS >= TRACE      15              12.5     2.5       20
DAYS >= 1.0         3               4.5    -1.5        4
GREATEST
 SNOW DEPTH         3   01/31                          5  01/14
                        01/10
 24 HR TOTAL      2.6   01/31 TO 01/31

DEGREE_DAYS
HEATING TOTAL    1108              1288    -180     1211
 SINCE 7/1       3225              3840    -615     3116
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0

FREEZE DATES
RECORD
 EARLIEST     08/03/1894
 LATEST       07/15/1863
EARLIEST                        10/01
LATEST                          05/10
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.0
RESULTANT WIND SPEED/DIRECTION   4/249
HIGHEST WIND SPEED/DIRECTION    40/250    DATE  01/10
HIGHEST GUST SPEED/DIRECTION    52/270    DATE  01/10

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY         20

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               1
HEAVY RAIN                2     RAIN                       6
LIGHT RAIN               12     FREEZING RAIN              1
LT FREEZING RAIN          4     HAIL                       1
HEAVY SNOW                0     SNOW                       5
LIGHT SNOW               14     SLEET                      3
FOG                      23     FOG W/VIS <= 1/4 MILE      5
HAZE                     17

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

&&

JANUARY 2017 FEATURED WELL ABOVE NORMAL TEMPERATURES, BELOW NORMAL
SNOWFALL, AND ABOVE NORMAL PRECIPITATION THAT OFTEN CAME IN THE FORM
OF RAIN. SOME PERIODS OF WINTRY MIX WERE ALSO NOTED.

A BRIEF BOUT OF WINTER WAS FEATURED FROM THE 4TH THROUGH THE 9TH
WITH GENERALLY LIGHT LAKE EFFECT SNOW AS WELL AS WET SNOW ASSOCIATED
WITH A WARM PUSH OF AIR INTO THE REGION. FAIRLY SIGNIFICANT RAINFALL
FOLLOWED THIS SNOW AND THAT PUSHED RIVERS HIGHER ACROSS THE AREA.
THIS HELPED BREAK UP ICE ON THE RIVERS AND LED TO SOME MINOR ICE
JAMS ON THE GRAND RIVER. IN ADDITION, AS THE WARM AIR SURGED IN ON
THE 10TH, VERY STRONG WIND GUSTS WERE REPORTED ACROSS THE REGION.
MOST GUSTS WERE IN THE 35 TO 55 MPH RANGE. THUNDERSTORMS WERE
REPORTED ACROSS SOUTHERN LOWER MICHIGAN ON THE 11TH.

ANOTHER ROUND OF SIGNIFICANT RAINFALL STRUCK THE REGION DURING THE
MIDDLE OF THE MONTH, PRODUCING A HALF INCH TO ONE INCH IN GENERAL.
THIS LED TO HIGH RIVER LEVELS, BUT NO SIGNIFICANT FLOODING.
THUNDERSTORMS WERE REPORTED ONCE AGAIN ACROSS SOUTHERN LOWER
MICHIGAN ON THE 17TH. A DRAMATIC WARM UP OCCURRED ON THE 21ST, WITH
SOME LOCATIONS BREAKING OUT INTO THE 60S, LEADING TO ONE OF THE
WARMEST JANUARY DAYS IN YEARS.

A CLIPPER SYSTEM PRODUCED GENERALLY 2" TO 5" OF SNOW ACROSS CENTRAL
AND SOUTHERN LOWER MICHIGAN ON THE 30TH AND 31ST. WHILE THIS WOULD
NORMALLY BE A COMMON OCCURRENCE IN JANUARY, IT ENDED UP BEING THE
EXCEPTION TO THE RULE.

TEMPERATURES AVERAGED WELL ABOVE NORMAL, WITH MOST LOCATIONS AROUND
5 DEGREES ABOVE THE TYPICAL MONTHLY AVERAGE TEMPERATURES. WHILE NOT
TOP TEN WARMTH, IT WAS CLOSE FOR GRAND RAPIDS, LANSING, AND
MUSKEGON. IRONICALLY, THIS JANUARY WAS MUCH WARMER THAN JANUARY 2016
DURING THE STRONG EL NINO PATTERN.

$$

CAS/HOVING



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