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Home > Weather and Earthquakes > One-week Forecasts

One-week Forecasts: Iwate

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Prefecture

Updated at 05:00 JST, 17 September 2014

Date 17
Wed
18
Thu
19
Fri
20
Sat
21
Sun
22
Mon
23
Tue
Nairiku

CLEAR, CLOUDY LATER PARTLY CLOUDY PARTLY CLOUDY MOSTLY CLOUDY MOSTLY CLOUDY CLOUDY, OCCASIONAL SCATTERED SHOWERS CLOUDY
Probability of
Precipitation (%)
-/10/20/40 10/10/10/10 10 20 20 50 30
Reliability / / A A B C B
Morioka High (°C) 21
21
22
(20 - 23)
23
(21 - 25)
22
(19 - 24)
20
(17 - 22)
20
(17 - 23)
Low (°C) / 11
9
(7 - 11)
10
(8 - 12)
11
(9 - 14)
12
(10 - 15)
12
(8 - 15)
Engan

CLEAR, CLOUDY LATER PARTLY CLOUDY PARTLY CLOUDY MOSTLY CLOUDY CLOUDY CLOUDY, OCCASIONAL SCATTERED SHOWERS CLOUDY
Probability of
Precipitation (%)
-/10/10/20 10/10/10/0 10 20 30 50 30
Reliability / / A A B C C
Miyako High (°C) 24
23
25
(22 - 28)
23
(21 - 25)
21
(19 - 23)
20
(17 - 21)
20
(17 - 23)
Low (°C) / 13
11
(9 - 13)
12
(10 - 14)
14
(12 - 16)
13
(12 - 15)
13
(11 - 16)
Normal Precipitation Low High
Morioka 16 - 42mm 13.6 °C 22.7 °C
Miyako 13 - 66mm 14.3 °C 22.3 °C

One-week forecasts for individual prefectures are issued at 11:00 and 17:00 JST every day. The latest daily forecasts are displayed in the columns for the first and second days. The probability of precipitation for today and tomorrow is displayed with six hours as a unit (i.e., 00 – 06/06 – 12/12 – 18/18 – 24 JST).
Figures shown in parentheses in the low and high temperature rows indicate the ranges of error in degrees Celsius. The reliability for the day is represented as A, B or C in descending order of expected accuracy. The results of precipitation forecast accuracy verification for the period from 1 April 2002 to 31 March 2007 indicate an average accuracy of 86% for A, 72% for B and 56% for C.
Values in the normal precipitation column represent the range of normal cumulative precipitation amounts for the coming seven days, while the figures in the normal low/high temperature columns represent those for the fourth day of the period.