Climatological Report (Monthly)
Issued by NWS Spokane, WA

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CXUS46 KOTX 010837
CLMLWS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SPOKANE, WA
134 AM PDT SAT APR 1 2017

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

...THE LEWISTON ID AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1881 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              80   03/30/1923
 LOW                2   03/05/1955
HIGHEST            63   03/10        MM      MM       69  03/31
LOWEST             28   03/06        MM      MM       27  03/18
AVG. MAXIMUM     54.0              54.9    -0.9     56.9
AVG. MINIMUM     37.2              35.6     1.6     37.0
MEAN             45.6              45.3     0.3     46.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.1    -0.1        0
DAYS MIN <= 32      6               8.0    -2.0        4
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.07   1931
 MINIMUM         0.25   1969
TOTALS           3.50              1.15    2.35     2.11
DAILY AVG.       0.11              0.04    0.07     0.07
DAYS >= .01        19              11.2     7.8       17
DAYS >= .10        11               3.7     7.3        6
DAYS >= .50         1               0.2     0.8        1
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.74   03/04 TO 03/04           03/21 TO 03/22
                                                          03/31 TO 03/31
                                                          03/31 TO 03/31

SNOWFALL (INCHES)
RECORDS
 TOTAL            9.7   1955
TOTALS            4.8               0.7     4.1      0.0
SINCE 7/1        39.2              10.5    28.7      6.4
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         1               0.2     0.8        0
GREATEST
 SNOW DEPTH         4   03/05                          0  MM
 24 HR TOTAL      4.1   MM                       03/31 TO 03/31
                                                          03/31 TO 03/31
                                                          03/31 TO 03/31

DEGREE_DAYS
HEATING TOTAL     595               612     -17      554
 SINCE 7/1       4631              4467     164     3818
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
..................................................

WIND (MPH)
AVERAGE WIND SPEED              5.2
HIGHEST WIND SPEED/DIRECTION    24/300    DATE  03/21
HIGHEST GUST SPEED/DIRECTION    31/300    DATE  03/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               18     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW                4     SLEET                      0
FOG                      16     FOG W/VIS <= 1/4 MILE      9
HAZE                      4

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

$$

MARCH 2017 BROUGHT A CONTINUATION OF VERY WET CONDITIONS AFTER A WET
FEBRUARY...WITH TEMPERATURES FOR THE MONTH NEAR NORMAL.  FOR
LEWISTON IT WAS THE 4TH WETTEST MARCH ON RECORD.  THE FIRST 8 DAYS
OF MARCH BROUGHT SEVERAL ROUNDS OF PRECIPITATION BUT WITH COOL
TEMPERATURES. ON THE 4TH A COUPLE BANDS OF HEAVY SNOW SET UP...ONE
IN THE AFTERNOON AND ANOTHER IN THE EVENING.  SNOW TOTALS INCLUDE 4
INCHES LEWISTON...6 INCHES MOSCOW AND NEZ PERCE...8 INCHES FOREST
(4500 FEET ON THE CAMAS PRAIRIE)...AND 10 INCHES IN ASOTIN.
WHAT WAS REALLY REMARKABLE ABOUT THIS EVENT IS HOW TEMPERATURES FELL
THROUGH THE DAY IN LEWISTON...DROPPING FROM 50 AT MIDNIGHT 32-33
DURING THE AFTERNOON AND EVENING.  THE PATTERN THEN TURNED WARMER
WHILE REMAINING WET. SNOW MELT COMBINED WITH RAIN LED TO FLOODING
WITH SEVERAL REPORTS OF SMALL STREAM FLOODING...FIELD FLOODING...AND
EVEN MUDSLIDES. ON THE 9TH AND 10TH PARADISE CREEK ROSE TO MODERATE
FLOOD STAGE OF 10 FEET.  MEANWHILE A MUDSLIDE BETWEEN JULIETTA AND
KENDRICK CLOSED STATE HIGHWAY 3. MEANWHILE STATE HIGHWAY 5 NEAR ROUND
LAKE WAS DAMAGED AND CONSIDERED A TOTAL LOSS.

NO RECORDS WERE SET DURING THE MONTH AT THE LEWISTON AIRPORT.


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