Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Grytviken 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Grytviken

South Georgia And South Sandwich Islands

Long range weather outlook for Grytviken includes 14 day forecast summary:

The forecast for Grytviken in the coming two weeks is predicting the average daytime maximum temperature will be around -2°C, with a high for the two weeks of 6°C expected on the morning of Saturday 27th. The mean minimum temperature will be -6°C, dipping to its lowest on the morning of Wednesday 24th at -9°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain, sleet or snow. The indicators are that Friday 19th will have the most precipitation with an accumulation of around 14.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 17
Sep		01:00

WNW
WNW

 9 / 11 mph 36 / 29°F 98% 1002 mb
Low level cloud: 71%
Mid level cloud: 9%
High level cloud: 91%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

 7 / 11 mph 34 / 28°F 96% 1000 mb
Low level cloud: 41%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

N
N

 4 / 7 mph 31 / 27°F 100% 996 mb
Low level cloud: 95%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

 2 / 4 mph 31 / 29°F 99% 990 mb
Low level cloud: 91%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
13:00

SSW
SSW

 8 / 17 mph 25 / 17°F 99% 984 mb
Low level cloud: 82%
Mid level cloud: 46%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
16:00

SW
SW

 14 / 28 mph 24 / 12°F 82% 987 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

SW
SW

 11 / 17 mph 25 / 15°F 82% 992 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 10 / 17 mph 25 / 15°F 83% 993 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 13%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 18
Sep		22:00

WSW
WSW

 11 / 22 mph 25 / 14°F 86% 992 mb
Low level cloud: 1%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 19
Sep		01:00

W
W

 12 / 25 mph 27 / 17°F 95% 991 mb
Low level cloud: 37%
Mid level cloud: 28%
High level cloud: 100%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 13 / 27 mph 28 / 17°F 97% 989 mb
Low level cloud: 63%
Mid level cloud: 44%
High level cloud: 82%
Most Significant Cloud Type: low
88%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
07:00

W
W

 12 / 23 mph 28 / 18°F 97% 989 mb
Low level cloud: 63%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
91%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
10:00

W
W

 10 / 19 mph 28 / 19°F 95% 987 mb
Low level cloud: 27%
Mid level cloud: 67%
High level cloud: 100%
Most Significant Cloud Type: low
62%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
13:00

WSW
WSW

 9 / 17 mph 28 / 19°F 80% 987 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 80%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 10 / 18 mph 26 / 16°F 83% 986 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

 10 / 19 mph 23 / 12°F 85% 987 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 11 / 20 mph 23 / 12°F 82% 988 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 20
Sep		01:00

SW
SW

 11 / 19 mph 24 / 13°F 84% 988 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

 11 / 22 mph 22 / 11°F 82% 989 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 14%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

 11 / 18 mph 24 / 13°F 82% 990 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 33%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

 9 / 15 mph 23 / 13°F 79% 989 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 6 / 12 mph 24 / 17°F 83% 987 mb
Low level cloud: 34%
Mid level cloud: 57%
High level cloud: 100%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

 9 / 20 mph 25 / 16°F 95% 983 mb
Low level cloud: 49%
Mid level cloud: 20%
High level cloud: 4%
Most Significant Cloud Type: low
55%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

WSW
WSW

 12 / 24 mph 24 / 13°F 90% 986 mb
Low level cloud: 8%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
11%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

SW
SW

 9 / 20 mph 23 / 13°F 87% 990 mb
Low level cloud: 4%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 21
Sep		01:00

SW
SW

 11 / 24 mph 23 / 12°F 84% 993 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

 12 / 25 mph 22 / 10°F 84% 996 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

 11 / 23 mph 22 / 11°F 83% 999 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 7 / 15 mph 25 / 17°F 82% 999 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 42%
Most Significant Cloud Type: high
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 8 / 16 mph 28 / 20°F 83% 998 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 6 / 13 mph 28 / 22°F 75% 997 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 8 / 18 mph 26 / 18°F 70% 996 mb
Low level cloud: 0%
Mid level cloud: 87%
High level cloud: 100%
Most Significant Cloud Type: medium
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 9 / 18 mph 24 / 15°F 76% 995 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 22
Sep		01:00

WNW
WNW

 10 / 21 mph 27 / 17°F 82% 992 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 10 / 18 mph 28 / 19°F 92% 989 mb
Low level cloud: 19%
Mid level cloud: 99%
High level cloud: 65%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

 9 / 19 mph 27 / 18°F 97% 985 mb
Low level cloud: 77%
Mid level cloud: 81%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 11 / 19 mph 29 / 19°F 97% 982 mb
Low level cloud: 75%
Mid level cloud: 33%
High level cloud: 100%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

 9 / 20 mph 29 / 21°F 96% 980 mb
Low level cloud: 16%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 10 / 20 mph 29 / 20°F 88% 979 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 2%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

 9 / 19 mph 26 / 17°F 80% 979 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

 14 / 25 mph 23 / 11°F 82% 980 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 23
Sep		01:00

W
W

 14 / 19 mph 25 / 13°F 84% 981 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WSW
WSW

 11 / 15 mph 24 / 13°F 84% 983 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

 12 / 14 mph 24 / 12°F 82% 985 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

 11 / 13 mph 26 / 15°F 77% 986 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 10 / 12 mph 26 / 16°F 71% 988 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 9 / 10 mph 25 / 16°F 78% 989 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 10 / 11 mph 22 / 11°F 83% 991 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 12 / 14 mph 21 / 9°F 82% 992 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 6%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 24
Sep		04:00

SSW
SSW

 6 / 10 mph 25 / 19°F 88% 1008 mb
Low level cloud: 36%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
51%
0.0 In
10:00

SSW
SSW

 11 / 16 mph 26 / 16°F 80% 995 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
44%
0.0 In
16:00

WSW
WSW

 11 / 17 mph 36 / 28°F 95% 1011 mb
Low level cloud: 54%
Mid level cloud: 46%
High level cloud: 98%
Most Significant Cloud Type: low
81%
0.0 In
22:00

WSW
WSW

 10 / 20 mph 33 / 26°F 94% 1005 mb
Low level cloud: 67%
Mid level cloud: 22%
High level cloud: 34%
Most Significant Cloud Type: low
78%
0.0 In
Thu 25
Sep		04:00

SSW
SSW

 6 / 13 mph 14 / 4°F 65% 1013 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 12%
Most Significant Cloud Type: medium
8%
0.0 In
10:00

SSW
SSW

 10 / 15 mph 30 / 21°F 65% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

SSW
SSW

 15 / 25 mph 29 / 18°F 79% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
22:00

SSW
SSW

 11 / 24 mph 21 / 9°F 79% 1016 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Fri 26
Sep		04:00

SW
SW

 11 / 21 mph 18 / 5°F 83% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
10:00

SSW
SSW

 4 / 6 mph 31 / 27°F 72% 1019 mb
Low level cloud: 0%
Mid level cloud: 98%
High level cloud: 0%
Most Significant Cloud Type: medium
98%
0.0 In
16:00

SSW
SSW

 9 / 15 mph 24 / 15°F 77% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

SSW
SSW

 8 / 16 mph 25 / 17°F 82% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
0.0 In
Sat 27
Sep		04:00

S
S

 5 / 11 mph 14 / 6°F 68% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

WNW
WNW

 14 / 22 mph 37 / 29°F 99% 1009 mb
Low level cloud: 74%
Mid level cloud: 54%
High level cloud: 86%
Most Significant Cloud Type: low
100%
0.0 In
16:00

SSW
SSW

 1 / 1 mph 25 / 25°F 78% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

SW
SW

 13 / 27 mph 30 / 20°F 85% 1009 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.1 In
Sun 28
Sep		04:00

E
E

 6 / 9 mph 35 / 30°F 89% 1017 mb
Low level cloud: 4%
Mid level cloud: 94%
High level cloud: 94%
Most Significant Cloud Type: medium
100%
0.0 In
10:00

SSW
SSW

 10 / 21 mph 33 / 26°F 72% 1016 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
16:00

WSW
WSW

 3 / 5 mph 50 / 50°F 96% 989 mb
Low level cloud: 71%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
87%
1.4 In
22:00

NW
NW

 1 / 1 mph 25 / 25°F 84% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 35%
Most Significant Cloud Type: high
35%
0.0 In
Mon 29
Sep		04:00

NW
NW

 24 / 48 mph 28 / 13°F 98% 983 mb
Low level cloud: 83%
Mid level cloud: 72%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.2 In
10:00

NW
NW

 6 / 9 mph 40 / 35°F 85% 1017 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 27%
Most Significant Cloud Type: medium
6%
0.0 In
16:00

WNW
WNW

 24 / 40 mph 39 / 29°F 94% 973 mb
Low level cloud: 45%
Mid level cloud: 99%
High level cloud: 14%
Most Significant Cloud Type: low
81%
0.4 In
22:00

NW
NW

 8 / 13 mph 43 / 38°F 100% 999 mb
Low level cloud: 95%
Mid level cloud: 70%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.5 In
Tue 30
Sep		04:00

WSW
WSW

 12 / 21 mph 28 / 18°F 93% 976 mb
Low level cloud: 29%
Mid level cloud: 27%
High level cloud: 5%
Most Significant Cloud Type: low
39%
0.6 In
10:00

SW
SW

 12 / 23 mph 34 / 25°F 81% 1007 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.2 In
16:00

SW
SW

 10 / 17 mph 32 / 24°F 81% 994 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.3 In
22:00

W
W

 12 / 24 mph 32 / 24°F 79% 1010 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 7%
Most Significant Cloud Type: medium
19%
0.0 In
Wed 01
Oct		04:00

SSW
SSW

 12 / 25 mph 18 / 5°F 80% 1007 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

W
W

 14 / 30 mph 34 / 25°F 85% 1010 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 14%
Most Significant Cloud Type: medium
6%
0.0 In
16:00

NW
NW

 6 / 11 mph 35 / 29°F 96% 1003 mb
Low level cloud: 75%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
22:00

WNW
WNW

 13 / 28 mph 33 / 24°F 78% 1006 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
0.0 In
Thu 02
Oct		04:00

WNW
WNW

 25 / 52 mph 27 / 13°F 88% 988 mb
Low level cloud: 48%
Mid level cloud: 60%
High level cloud: 0%
Most Significant Cloud Type: low
68%
0.2 In
10:00

WNW
WNW

 16 / 30 mph 34 / 24°F 96% 993 mb
Low level cloud: 5%
Mid level cloud: 0%
High level cloud: 99%
Most Significant Cloud Type: medium
17%
0.1 In
16:00

W
W

 28 / 50 mph 37 / 25°F 81% 992 mb
Low level cloud: 19%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
34%
0.1 In
22:00

W
W

 20 / 36 mph 33 / 22°F 84% 992 mb
Low level cloud: 27%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
30%
0.0 In

The day label given represents the local day relative to the local time for the location you are looking at.
(More Info)

Day

This time is corrected for local time zones and where possible for daylight saving times.
(More Info)

Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
(More Info)

Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
(More Info)

Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
(More Info)

Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
(More Info)

Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
(More Info)

Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
(More Info)

Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
(More Info)

Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
(More Info)

Pressure