National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Weather observations for the past three days for
Hebron, Hebron Municipal Airport
Metric (Imperial)
Date Time (cdt) Wind (kph) Vis. (km) Weather Sky Cond. Temperature (ºC) Relative Humidity Wind Chill (°C) Heat Index (°C) Pressure Precipitation (cm)
Air Dwpt 6 hour altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
Max. Min.
05 02:55 Calm 0.24 Fog OVC002 17.8 17.3 97% 75.74 0.0
05 02:35 Calm 0.40 Fog OVC002 17.8 17.3 97% 75.74 0.0
05 02:15 Calm 0.40 Fog OVC002 17.9 17.4 97% 75.74 0.0
05 01:55 Calm 0.40 Fog OVC002 17.8 17.3 97% 75.77 0.0
05 01:35 Calm 0.80 Fog OVC002 17.6 17.2 98% 75.74 0.0
05 01:15 Calm 0.80 Fog OVC002 17.6 17.1 97% 75.77 0.0
05 00:55 Calm 0.40 Fog OVC002 17.8 17.3 22.2 17.7 97% 75.77 0.0
05 00:35 Calm 0.40 Fog OVC002 17.8 17.3 97% 75.77 0.0
05 00:15 Calm 0.80 Fog OVC002 17.7 17.2 97% 75.79 0.0
04 23:55 Calm 0.80 Fog OVC002 18.2 17.7 97% 75.79 0.0
04 23:35 Calm 0.24 Fog OVC002 18.4 17.9 97% 75.82 0.0
04 23:15 Calm 0.40 Fog OVC002 18.3 17.8 97% 75.82 0.0
04 22:55 Calm 0.40 Fog OVC002 18.6 17.9 96% 75.84 0.0
04 22:35 Calm 0.80 Fog BKN002 BKN008 19 18.4 96% 75.87 0.0
04 22:15 Calm 2.82 Fog/Mist SCT008 19.7 19 96% 75.87 0.0
04 21:55 Calm 16.09 Fair CLR 20 19.2 95% 75.84 0.0
04 21:35 Calm 11.27 Fair CLR 20.4 19.5 95% 75.82 0.0
04 21:15 Calm 16.09 Partly Cloudy SCT011 20.9 19.7 93% 75.79 0.0
04 20:55 Calm 16.09 Overcast BKN009 OVC012 21.5 20.1 92% 75.79 0.0
04 20:35 NE 6 16.09 Mostly Cloudy BKN009 22 20.2 90% 75.79 0.0
04 20:15 Calm 16.09 Mostly Cloudy BKN011 BKN015 22 20 88% 75.79 0.0
04 19:55 Calm 16.09 Mostly Cloudy BKN011 BKN017 22.1 20 88% 75.79 0.0
04 19:35 SE 6 16.09 Overcast BKN011 OVC017 22 19.7 87% 75.79 0.0
04 19:15 SE 6 16.09 Overcast OVC011 22 19.8 87% 75.79 0.0
04 18:55 E 7 16.09 Overcast OVC009 22 19.9 22.2 20.2 88% 75.82 0.0 0.2
04 18:35 E 11 16.09 Overcast OVC007 21.7 19.8 89% 75.82 0.0
04 18:15 E 11 16.09 Overcast OVC007 21.2 19.5 90% 75.82 0.0
04 17:55 E 13 16.09 Overcast OVC007 21.2 19.5 90% 75.79 0.0 0.03
04 17:35 E 13 16.09 Overcast OVC005 20.7 19.6 93% 75.82 0.0 0.03
04 17:15 E 15 16.09 Light Drizzle BKN005 BKN016 OVC029 20.5 19.5 94% 75.84 0.0 0.03
04 16:55 E 11 16.09 Thunderstorm Light Rain in Vicinity SCT005 BKN013 OVC060 20.4 19.5 95% 75.82 0.0 0.18
04 16:15 SE 13 4.83 Thunderstorm Rain BKN009 BKN018 OVC023 20.6 19.3 92% 75.9 0.0 0.15
04 15:55 E 17 16.09 Thunderstorm in Vicinity SCT009 SCT020 BKN030 21 19.1 89% 75.87 0.0
04 15:35 E 11 16.09 Partly Cloudy SCT009 SCT022 SCT055 21.2 18.9 87% 75.9 0.0
04 15:15 E 15 16.09 Thunderstorm in Vicinity SCT009 SCT042 SCT048 21.5 19.4 88% 75.92 0.0
04 14:55 E 15 16.09 Thunderstorm in Vicinity SCT009 OVC046 21.9 19.1 84% 75.97 0.0
04 14:35 NE 9 16.09 Overcast SCT009 SCT032 OVC046 22 19.4 85% 75.95 0.0
04 14:15 NE 6 16.09 Overcast SCT009 BKN039 OVC060 22 19.4 85% 76 0.0
04 13:55 Calm 16.09 Overcast SCT009 BKN041 OVC047 21.4 19 86% 76.02 0.0
04 13:35 SE 6 16.09 Light Rain BKN007 BKN025 OVC060 21.3 19.1 87% 76.05 0.0
04 13:15 SE 6 16.09 Thunderstorm in Vicinity BKN007 BKN032 OVC060 21 19.6 92% 76.07 0.0
04 12:55 Calm 16.09 Thunderstorm in Vicinity SCT009 BKN060 OVC065 20.1 19 20.1 18.3 93% 76.1 0.0 0.05 0.69
04 12:35 SE 11 16.09 Light Rain SCT016 SCT055 OVC070 19.6 18.6 94% 76.15 0.0 0.05
04 12:15 SE 9 16.09 Thunderstorm Rain in Vicinity BKN004 BKN065 OVC090 19.7 19 96% 76.15 0.0 0.03
04 11:55 E 6 8.05 Thunderstorm Rain in Vicinity BKN004 BKN017 OVC100 19.5 18.8 96% 76.12 0.0 0.3
04 11:35 E 6 8.05 Thunderstorm Rain in Vicinity SCT070 BKN100 OVC120 19.5 18.6 95% 76.15 0.0 0.23
04 11:15 SE 6 11.27 Rain OVC110 19.5 18.5 94% 76.17 0.0 0.08
04 10:55 SE 7 16.09 Rain SCT060 SCT070 OVC110 19.5 18.5 94% 76.17 0.0 0.03
04 10:15 E 9 16.09 Thunderstorm in Vicinity SCT045 SCT075 BKN080 19.3 18.2 93% 76.2 0.0
04 09:55 E 13 11.27 Light Rain BKN070 OVC090 19.1 18.2 95% 76.2 0.0 0.25 0.3
04 09:35 Calm 11.27 Thunderstorm Rain OVC100 19 18 94% 76.25 0.0 0.1
04 09:15 Calm 16.09 Thunderstorm Light Rain in Vicinity SCT047 SCT075 OVC095 19.2 17.7 91% 76.28 0.0 0.03
04 08:55 Calm 16.09 Thunderstorm Light Rain SCT050 SCT110 19.2 17.6 91% 76.28 0.0 0.03
04 08:35 Calm 16.09 Thunderstorm Light Rain in Vicinity SCT021 SCT037 BKN120 19 17.7 92% 76.28 0.0 0.03
04 08:15 Calm 16.09 Rain BKN023 OVC065 18.8 17.8 94% 76.28 0.0 0.03
04 07:35 Calm 16.09 Light Rain BKN030 BKN060 OVC110 18.6 17.6 94% 76.3 0.0
04 07:15 Calm 16.09 Overcast SCT011 OVC120 18.5 17.5 94% 76.3 0.0
04 06:55 Calm 16.09 Overcast OVC011 18.3 17.5 18.7 18.1 95% 76.28 0.0 0.15
04 06:35 NE 6 16.09 Overcast OVC011 18.2 17.5 96% 76.28 0.0
04 06:15 NE 6 16.09 Light Rain OVC009 18.2 17.5 96% 76.28 0.0
04 05:55 N 7 16.09 Light Drizzle OVC009 18.2 17.5 96% 76.3 0.0 0.03
04 05:35 N 6 16.09 Overcast OVC007 18.2 17.5 96% 76.28 0.0 0.03
04 05:15 Calm 16.09 Light Rain BKN007 BKN018 OVC120 18.2 17.5 96% 76.25 0.0 0.03
04 04:55 Calm 16.09 Light Rain SCT007 SCT024 OVC110 18.2 17.3 95% 76.25 0.0
04 04:35 Calm 16.09 Overcast SCT007 OVC110 18.2 17.2 94% 76.23 0.0
04 04:15 Calm 16.09 Mostly Cloudy BKN120 18.2 17.1 93% 76.23 0.0
04 03:55 Calm 16.09 Mostly Cloudy BKN120 18.2 17 93% 76.2 0.0 0.13
04 03:35 Calm 16.09 Mostly Cloudy BKN120 18.2 17 93% 76.17 0.0
04 03:15 Calm 16.09 Mostly Cloudy BKN120 18.1 17 93% 76.23 0.0
04 02:55 W 6 16.09 Light Rain SCT100 BKN120 18.2 17 93% 76.25 0.0 0.1
04 02:35 Calm 16.09 Rain BKN100 OVC110 18.2 17 93% 76.28 0.0 0.08
04 02:15 NW 9 16.09 Rain SCT095 OVC110 18.5 16.8 90% 76.3 0.0 0.03
04 01:55 SE 6 16.09 Rain OVC110 18.5 16.8 90% 76.3 0.0 0.03
04 01:35 S 7 16.09 Light Rain OVC110 18.5 16.6 89% 76.3 0.0
04 01:15 S 11 16.09 Light Rain OVC120 18.5 16.6 89% 76.33 0.0
04 00:55 SW 11 16.09 Light Rain SCT100 OVC120 18.6 16.5 19.3 18.5 88% 76.3 0.0 0.15 1.73
04 00:35 SW 19 16.09 Light Rain SCT100 BKN120 18.5 16.8 90% 76.33 0.0 0.13
04 00:15 SW 17 16.09 Rain SCT080 SCT100 BKN120 18.6 16.7 89% 76.35 0.0 0.05
03 23:55 W 19 11.27 Rain SCT080 OVC100 18.5 17.1 92% 76.38 0.0 0.43
03 23:35 W 17 11.27 Rain SCT070 OVC100 18.6 17.3 92% 76.43 0.0 0.25
03 23:15 W 17 11.27 Rain OVC110 18.7 17.3 92% 76.53 0.0 0.1
03 22:55 W 19 16.09 Rain OVC110 18.8 17.5 92% 76.5 0.0 0.05
03 22:35 W 17 16.09 Light Drizzle BKN110 19 17.5 91% 76.48 0.0
03 22:15 W 13 16.09 Light Rain BKN110 19 17.5 91% 76.48 0.0
03 21:55 Calm 16.09 Light Rain SCT055 SCT080 BKN120 19 17.2 89% 76.43 0.0 0.13 1.07
03 21:35 SE 13 16.09 Rain OVC120 19.3 17.4 89% 76.4 0.0 0.08
03 21:15 Calm 16.09 Rain SCT070 SCT080 OVC110 19.1 17.3 89% 76.38 0.0 0.05
03 20:35 NE 6 11.27 Rain OVC095 18.8 17.7 93% 76.45 0.0 0.18
03 20:15 NE 7 11.27 Thunderstorm Rain in Vicinity OVC095 19 17.9 93% 76.43 0.0 0.08
03 19:55 NE 7 16.09 Thunderstorm Light Rain BKN095 OVC120 19 17.7 92% 76.45 0.0 0.66
03 19:35 NE 9 11.27 Thunderstorm Rain in Vicinity SCT032 SCT049 OVC095 19.1 17.8 92% 76.45 0.0 0.58
03 19:15 N 6 4.83 Heavy Rain SCT027 BKN034 OVC049 19.1 17.7 92% 76.5 0.0 0.36
03 18:55 NW 11 3.22 Thunderstorm Heavy Rain in Vicinity BKN027 BKN036 OVC049 19.1 17.4 30.7 19 90% 76.5 0.0 1.19 1.19
03 18:35 N 19 G 35 16.09 Thunderstorm Light Rain SCT023 SCT029 OVC047 19.3 17.7 91% 76.43 0.0 0.51
03 18:15 N 22 G 35 4.83 Thunderstorm Heavy Rain in Vicinity SCT027 BKN038 OVC048 19.3 17.3 88% 76.45 0.0 0.3
03 17:55 NW 30 G 41 11.27 Light Rain SCT025 SCT031 OVC038 20.6 16.6 78% 76.45 0.0
03 17:35 NW 26 G 33 16.09 Overcast SCT030 BKN038 OVC048 23.8 16.9 65% 76.4 0.0
03 16:55 S 20 G 28 16.09 Mostly Cloudy SCT050 BKN055 BKN110 29.5 17.1 47% 30 76.33 0.0
03 16:35 SE 22 G 28 16.09 Partly Cloudy SCT049 SCT060 SCT110 30.4 17.5 46% 31 76.33 0.0
03 16:15 S 24 G 37 16.09 Mostly Cloudy SCT049 BKN060 BKN120 30.5 17.4 45% 31 76.33 0.0
03 15:55 S 24 G 31 16.09 Mostly Cloudy SCT047 SCT055 BKN120 29.8 17.5 48% 30 76.38 0.0
03 15:35 S 20 G 30 16.09 Partly Cloudy SCT047 SCT055 30.6 17.6 46% 31 76.4 0.0
03 15:15 SE 22 16.09 Partly Cloudy SCT047 30 17.5 47% 31 76.43 0.0
03 14:55 S 20 G 31 16.09 Partly Cloudy SCT043 29.9 17.9 49% 31 76.43 0.0
03 14:35 S 20 G 30 16.09 Partly Cloudy SCT043 30.1 17.8 48% 31 76.45 0.0
03 14:15 S 20 16.09 Fair CLR 29.5 17.4 48% 30 76.48 0.0
03 13:55 S 17 G 28 16.09 Partly Cloudy SCT042 SCT070 29.3 17.6 49% 30 76.5 0.0
03 13:35 S 13 G 30 16.09 Partly Cloudy SCT070 SCT090 28.6 17.5 51% 29 76.53 0.0
03 13:15 S 15 16.09 Mostly Cloudy SCT034 BKN070 BKN080 28.1 18.3 55% 29 76.56 0.0
03 12:55 S 13 16.09 Mostly Cloudy SCT032 BKN070 28.5 18.7 28.5 17.9 55% 30 76.58 0.0
03 12:15 SE 15 16.09 Partly Cloudy SCT027 27.4 19.2 61% 29 76.61 0.0
03 11:55 S 15 16.09 Fair CLR 27 19.2 62% 28 76.63 0.0
03 11:35 S 15 16.09 Fair CLR 26.3 19.1 65% 27 76.63 0.0
03 11:15 S 15 16.09 Fair CLR 25.8 19 66% 27 76.63 0.0
03 10:55 S 17 16.09 Fair CLR 25.1 18.7 68% 26 76.63 0.0
03 10:15 S 15 16.09 Fair CLR 23.9 18.1 70% 25 76.66 0.0
03 09:55 S 17 16.09 Fair CLR 23.5 17.9 71% 76.66 0.0
03 09:35 S 17 G 26 16.09 Fair CLR 22.9 17.7 73% 76.68 0.0
03 09:15 S 15 16.09 Fair CLR 22.2 17.2 73% 76.68 0.0
03 08:55 S 15 16.09 Partly Cloudy SCT038 21.5 16.8 75% 76.68 0.0
03 08:35 S 15 16.09 Overcast OVC038 20.6 16.3 76% 76.68 0.0
03 08:15 S 13 16.09 Mostly Cloudy BKN042 19.8 16.1 79% 76.68 0.0
03 07:55 S 15 16.09 Overcast OVC044 19.7 15.9 79% 76.68 0.0
03 07:35 SE 13 16.09 Overcast SCT039 OVC048 18.7 15.6 82% 76.68 0.0
03 07:15 SE 11 16.09 Overcast BKN037 BKN044 OVC050 18.2 15 82% 76.68 0.0
03 06:55 SE 9 16.09 Partly Cloudy SCT035 SCT044 17.7 14.7 19 16.6 83% 76.66 0.0
03 06:35 SE 9 16.09 Fair CLR 17.2 14.5 84% 76.66 0.0
03 06:15 SE 7 16.09 Fair CLR 17 14.2 84% 76.66 0.0
03 05:55 E 6 16.09 Fair CLR 17 14.2 84% 76.63 0.0
03 05:35 Calm 16.09 Partly Cloudy SCT031 16.9 14.2 84% 76.66 0.0
03 05:15 SE 6 16.09 Partly Cloudy SCT031 17 14.2 84% 76.66 0.0
03 04:55 Calm 16.09 Fair CLR 17 14.2 84% 76.63 0.0
03 04:35 Calm 16.09 Fair CLR 16.9 14.4 85% 76.66 0.0
03 04:15 SE 6 16.09 Fair CLR 16.6 14.3 86% 76.66 0.0
03 03:55 E 7 16.09 Fair CLR 17 14.4 85% 76.66 0.0
03 03:35 Calm 16.09 Fair CLR 17.2 14.5 84% 76.68 0.0
03 03:15 SE 7 16.09 Fair CLR 17.4 14.5 83% 76.68 0.0
03 02:55 SE 6 16.09 Fair CLR 17 14.5 85% 76.71 0.0
03 02:35 Calm 16.09 Fair CLR 17.4 14.5 83% 76.71 0.0
03 02:15 Calm 16.09 Fair CLR 17.3 14.6 84% 76.71 0.0
03 01:55 Calm 16.09 Fair CLR 18 14.8 82% 76.73 0.0
03 01:15 SE 6 16.09 Fair CLR 18.6 15 80% 76.73 0.0
03 00:55 SE 6 16.09 Fair CLR 19 15.1 25.2 19 78% 76.73 0.0
03 00:35 SE 7 16.09 Fair CLR 19.1 15.2 78% 76.73 0.0
03 00:15 SE 7 16.09 Fair CLR 19.6 15.5 77% 76.73 0.0
02 23:55 SE 7 16.09 Fair CLR 20 15.7 76% 76.73 0.0
02 23:35 SE 9 16.09 Fair CLR 20.3 16.2 77% 76.71 0.0
02 23:15 SE 7 16.09 Fair CLR 20.5 16.7 79% 76.73 0.0
02 22:55 SE 9 16.09 Fair CLR 20.7 17 79% 76.71 0.0
02 22:35 SE 7 16.09 Fair CLR 20.9 17.5 81% 76.71 0.0
02 22:15 SE 6 16.09 Fair CLR 21.3 17.5 79% 76.71 0.0
02 21:55 SE 7 16.09 Fair CLR 21.5 17.9 80% 76.71 0.0
02 21:35 SE 6 16.09 Fair CLR 22 18.1 79% 76.68 0.0
02 21:15 SE 6 16.09 Fair CLR 22.4 18.2 77% 76.68 0.0
02 20:55 SE 6 16.09 Fair CLR 23 18.2 74% 76.66 0.0
02 20:35 SE 6 16.09 Partly Cloudy SCT120 23.7 18.1 71% 76.66 0.0
02 19:55 E 11 16.09 Overcast OVC110 25 17.9 65% 26 76.63 0.0
02 19:35 E 11 16.09 Overcast OVC110 25 18.3 66% 26 76.61 0.0
02 19:15 E 13 16.09 Overcast OVC110 25.1 18.4 66% 26 76.61 0.0
02 18:55 E 9 16.09 Mostly Cloudy BKN110 24.8 18.5 28 19.5 68% 26 76.61 0.0 0.36
02 18:35 E 13 16.09 Partly Cloudy SCT110 25 18.7 68% 26 76.61 0.0
02 18:15 E 9 16.09 Fair CLR 25.2 17.8 64% 26 76.63 0.0
02 17:55 E 9 16.09 Fair CLR 24 18.6 72% 25 76.63 0.0
02 17:35 E 11 16.09 Fair CLR 23.1 18 73% 76.63 0.0
02 16:55 E 9 11.27 Rain SCT050 BKN065 OVC080 20.5 17.9 85% 76.73 0.0 0.15
02 16:35 SE 9 11.27 Rain SCT050 BKN065 OVC075 20.6 17 80% 76.76 0.0 0.1
02 16:15 E 19 G 37 16.09 Overcast SCT039 BKN046 OVC090 22.5 15.3 64% 76.76 0.0
02 15:35 Calm 16.09 Fair CLR 27.3 17.9 57% 28 76.68 0.0
02 15:15 NE 6 16.09 Thunderstorm in Vicinity CLR 26.7 18.7 62% 28 76.68 0.0
02 14:55 Calm 16.09 Fair CLR 26.3 17.8 60% 27 76.71 0.0
02 14:35 Calm 16.09 Fair CLR 25.1 16.6 59% 26 76.68 0.0
02 14:15 Calm 16.09 Fair CLR 23.2 17.3 70% 76.71 0.0
02 13:55 N 7 16.09 Mostly Cloudy SCT036 SCT050 BKN120 21.3 17.3 78% 76.78 0.0 0.2
02 13:35 NE 6 16.09 Thunderstorm Light Rain in Vicinity SCT049 SCT065 OVC100 20.5 16.5 78% 76.78 0.0 0.2
02 13:15 W 7 6.44 Thunderstorm Rain SCT029 BKN050 OVC085 19.5 15.8 79% 76.78 0.0 0.2
02 12:55 S 30 G 43 16.09 Thunderstorm in Vicinity BKN025 BKN032 OVC042 25.6 18 26.6 20.3 63% 27 76.78 0.0
02 12:35 SE 11 16.09 Overcast BKN027 BKN039 OVC060 26 19.3 67% 27 76.76 0.0
02 12:15 SE 7 16.09 Overcast BKN025 OVC033 26.3 19.3 65% 28 76.73 0.0
02 11:55 SE 9 16.09 Partly Cloudy SCT025 25.8 19.1 67% 27 76.76 0.0
02 11:35 E 11 16.09 Partly Cloudy SCT033 24.5 18.5 69% 25 76.73 0.0
02 11:15 E 13 16.09 Fair CLR 23.7 17.8 70% 76.73 0.0
02 10:55 E 13 16.09 Fair CLR 23.5 17.4 69% 76.71 0.0
02 10:15 E 13 16.09 Partly Cloudy SCT120 22.5 16.4 69% 76.73 0.0
02 09:55 E 11 16.09 Fair CLR 22.5 16.5 69% 76.76 0.0
02 09:35 E 11 16.09 Partly Cloudy SCT120 22.5 16.8 70% 76.73 0.0
02 09:15 E 15 16.09 Partly Cloudy SCT120 22.1 17 73% 76.73 0.0
02 08:55 NE 11 16.09 Fair CLR 21.5 17.3 77% 76.73 0.0
02 08:35 NE 7 16.09 Partly Cloudy SCT034 SCT055 SCT110 20.7 17.4 81% 76.71 0.0
02 08:15 NE 9 16.09 Mostly Cloudy SCT031 SCT039 BKN055 20.5 17.6 84% 76.73 0.0
02 07:55 NE 15 16.09 Light Rain OVC031 20.5 17.4 83% 76.71 0.0
02 07:35 N 9 16.09 Overcast OVC029 20.6 16.9 79% 76.71 0.0
02 07:15 NE 13 16.09 Overcast OVC029 20.8 16.7 78% 76.71 0.0
02 06:55 N 15 16.09 Thunderstorm OVC027 21 16.3 23.9 20.7 75% 76.73 0.0
02 06:15 N 24 G 33 16.09 Overcast OVC024 21.4 16.6 74% 76.68 0.0
02 05:55 N 20 G 30 16.09 Overcast SCT024 BKN060 OVC110 21.1 16.7 76% 76.66 0.0
02 05:35 N 20 G 31 16.09 Mostly Cloudy SCT032 BKN110 21.6 17.7 79% 76.61 0.0
02 05:15 Calm 16.09 Fair CLR 21.3 18.5 84% 76.53 0.0
02 04:55 Calm 16.09 Partly Cloudy SCT042 21.8 18.5 82% 76.5 0.0
02 04:35 E 6 16.09 Fair CLR 21.6 18.5 83% 76.48 0.0
02 04:15 E 9 16.09 Light Rain SCT120 21.5 18.7 84% 76.48 0.0
02 03:55 NE 6 16.09 Partly Cloudy SCT120 21.2 19.1 88% 76.53 0.0
02 03:35 Calm 16.09 Fair CLR 21.2 19.1 88% 76.56 0.0
02 03:15 Calm 16.09 Fair CLR 21.7 19 85% 76.53 0.0
Date Time (cdt) Wind (kph) Vis. (km) Weather Sky Cond. Air Dwpt Max. Min. Relative Humidity Wind Chill (°C) Heat Index (°C) altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
6 hour
Temperature (ºC) Pressure Precipitation (cm)