Futenma, Japan Monthly Climatology April

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Futenma, JapanMonthly ClimatologyApril
This brief is intended for METOC personnel. It
is not designed as a one-size fits all for every
echelon. Each unit must tailor this brief to
their own specific requirements
Prepared by FLENUMMETOC DET Asheville
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IV. Seasonal Discussion

• The Siberian High continues to loosen its grip on
  the Far East. The western coastal areas of Korea
  and Japan gradually lose the cloud cover
  associated with the High during April. The polar
  front retreats northward and the number of waves
  increases along the front, bringing in more
  cloudiness and precipitation to southern Japan
  and the areas east of Japans central mountain
  divide.
• Throughout Japan and Korea, temperatures are 10
  degrees warmer than during March, even though
  cold temperatures do occur on occasion. In the
  past, snow has been reported in southern Japan
  during April, but it is rare. Northern Honshu
  and Hokkaido can still expect some snowfall
  during the first part of the month.

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V. Futenma, Japan - April
Worldwide Surface Climate Summaries Version 1.0
TEMPERATURE Avg MAX Avg MIN
PRECIPITATION Monthly Mean
TEMPERATURE MAX MIN
STATISTICS
WINDS
SKY CONDITION
N S ESE 8 kts
DAYS DAYS DAYS DAYS DAYS
18 0 0 3 10
RAIN SNOW BS/BD TSTM FOG
8 7 6 5 4 3 2 1
100F 90F 80F 70F 60F 50F 40F 30F
20F
BKN/OVC 75
W E
RH 83 (0600L) RH 71 (1500L)
Potential Impacts -Winds less than 11 kts occur
72 of the time -Winds 22-33 kts occur lt .5 of
the time -Visibility less than 5 NM occurs 7 of
the time -Ceilings less than 1,000 ft and/or
visibility less than 5 NM occur 10 of the
time -Ceilings less than 300 ft and/or visibility
less than 1 NM occur 1 of the time
65F
75F
Mean 6.4
88F 52F
EXTREME HIGH EXTREME LOW
18.1 0.8
EXTREME HIGH EXTREME LOW
Prepared by FLENUMMETOC DET Asheville
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VII. 1000 mb Heights (m)/Winds (kts) - April
NCEP
UNCLASSIFIED
5
VII. 850 mb Heights (m)/Winds (kts) - April
NCEP
UNCLASSIFIED
6
VII. 700 mb Heights (m)/Winds (kts) - April
NCEP
UNCLASSIFIED
7
VII. 500 mb Heights (m)/Winds (kts) - April
NCEP
UNCLASSIFIED
8
VII. 250 mb Heights (m)/Winds (kts) - April
NCEP
UNCLASSIFIED
UNCLASSIFIED