Observed 12:45 PM CDT at KATY

Erwin, SD weather

Overcast and 48°9°, 9°5° warmer than a typical Oct 24, jacket by 6 PM.

Mostly agree

Now 48°9°

Cloudy · Feels like 42°6°

Feels like: 42°6°; Wind chill from 15 mph24 km/h wind · air 48°9°
Wind: 15 mph24 km/hgusts 21 mph33 km/h; From the north-northwest. Easing to 5 mph8 km/h by 6 PM
Dew point: 39°4°; Comfortable · down to 31°−1° by 1 AM (dry)
UV index: 3Moderate; Moderate until 3 PM
Pressure: 30.25 inHg1024 hPa; Rising · +0.09 inHg+3.1 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

17°10° cooler than this time yesterday (66°19° then, 49°9° now)

Good hours for

Rain until 2 PM (20%)
High 58°14° today at 2 PM
Below 50°10° tonight after 8 PM
Rain tomorrow from 7 AM (100%, 4.3 in110 mm)
Gusts to 32 mph51 km/h Monday from 5 AM

This afternoonUp to 58°14° by 2 PM · Rain 1–2 PM (20%)
TonightDown to 42°6° by 5 AM · Mostly cloudy
Tomorrow morningNear 44°7° · Rain 7 AM–noon (70%)
Tomorrow afternoonNear 46°8° · Rain all afternoon (80%)
Tomorrow nightDown to 38°3° by 5 AM · Rain all night (100%) · gusts to 26 mph42 km/h
Monday morningNear 40°4° · Rain all morning (100%) · gusts to 31 mph50 km/h

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 1p	Showers	54°12° (likely 46°8° to 54°12°)	54°12°	20%, 0.03 in0.8 mm	15 mph24 km/h from NNW, gusts 18 mph30 km/h	56%	99%	3
Sat 2p	Cloudy	58°14° (likely 45°7° to 58°14°)	58°14°	10%, 0.03 in0.8 mm	15 mph24 km/h from NNW, gusts 15 mph24 km/h	45%	100%	3
Sat 3p	Cloudy	56°13° (likely 46°8° to 56°13°)	56°13°	10%, 0.03 in0.8 mm	15 mph24 km/h from NNW, gusts 14 mph23 km/h	48%	99%	2
Sat 4p	Cloudy	56°13° (likely 48°9° to 56°13°)	56°13°	5%, 0.03 in0.8 mm	10 mph16 km/h from NNW, gusts 12 mph19 km/h	45%	91%	1
Sat 5p	Cloudy	56°13° (likely 49°9° to 56°13°)	56°13°	5%, 0.03 in0.8 mm	10 mph16 km/h from NNW, gusts 12 mph19 km/h	43%	90%	1
Sat 6p	Cloudy	55°13° (likely 48°9° to 55°13°)	55°13°	5%, 0.03 in0.8 mm	5 mph8 km/h from NNW, gusts 11 mph17 km/h	46%	92%	0
Sat 7p	Cloudy	52°11° (likely 46°8° to 52°11°)	52°11°	0%	5 mph8 km/h from NNW, gusts 9 mph15 km/h	47%	87%	0
Sat 8p	Cloudy	49°9° (likely 45°7° to 49°9°)	48°9°	0%	5 mph8 km/h from NNW, gusts 8 mph13 km/h	53%	83%	0
Sat 9p	Cloudy	48°9° (likely 44°7° to 48°9°)	46°8°	0%	5 mph8 km/h from N, gusts 8 mph12 km/h	53%	82%	0
Sat 10p	Cloudy	48°9° (likely 42°6° to 48°9°)	46°8°	0%	5 mph8 km/h from N, gusts 9 mph14 km/h	53%	76%	0
Sat 11p	Cloudy	47°8° (likely 40°4° to 47°8°)	45°7°	0%	5 mph8 km/h from N, gusts 9 mph14 km/h	56%	75%	0
Sun 12a	Cloudy	46°8° (likely 40°4° to 46°8°)	44°7°	0%	5 mph8 km/h from NNE, gusts 9 mph15 km/h	58%	72%	0
Sun 1a	Clear	46°8° (likely 39°4° to 46°8°)	44°7°	0%	5 mph8 km/h from NNE, gusts 9 mph15 km/h	56%	30%	0
Sun 2a	Clear	45°7° (likely 39°4° to 45°7°)	41°5°	0%	5 mph8 km/h from NE, gusts 10 mph15 km/h	58%	41%	0
Sun 3a	Mostly cloudy	45°7° (likely 39°4° to 45°7°)	41°5°	0%	5 mph8 km/h from NE, gusts 9 mph14 km/h	56%	63%	0
Sun 4a	Cloudy	43°6° (likely 39°4° to 43°6°)	39°4°	0%	5 mph8 km/h from NE, gusts 9 mph15 km/h	59%	88%	0
Sun 5a	Cloudy	42°6° (likely 39°4° to 43°6°)	38°3°	5%	5 mph8 km/h from ENE, gusts 9 mph14 km/h	61%	100%	0
Sun 6a	Cloudy	42°6° (likely 38°3° to 44°7°)	38°3°	10%	5 mph8 km/h from ENE, gusts 12 mph19 km/h	59%	100%	0
Sun 7a	Cloudy	41°5° (likely 38°3° to 44°7°)	36°2°	40%, 0.01 in0.3 mm	10 mph16 km/h from ENE, gusts 11 mph18 km/h	61%	99%	0
Sun 8a	Cloudy	40°4° (likely 38°3° to 44°7°)	34°1°	40%, 0.01 in0.3 mm	10 mph16 km/h from ENE, gusts 11 mph18 km/h	65%	100%	0
Sun 9a	Cloudy	42°6° (likely 41°5° to 45°7°)	37°3°	50%, 0.01 in0.3 mm	10 mph16 km/h from ENE, gusts 11 mph17 km/h	64%	100%	0
Sun 10a	Cloudy	45°7° (likely 42°6° to 46°8°)	40°4°	70%, 0.01 in0.3 mm	10 mph16 km/h from ENE, gusts 14 mph22 km/h	60%	100%	0
Sun 11a	Cloudy	45°7° (likely 42°6° to 46°8°)	40°4°	70%, 0.01 in0.3 mm	10 mph16 km/h from ENE, gusts 14 mph23 km/h	63%	100%	0
Sun 12p	Showers	46°8° (likely 42°6° to 46°8°)	41°5°	70%, 0.01 in0.3 mm	10 mph16 km/h from ENE, gusts 16 mph25 km/h	60%	100%	0
Sun 1p	Rain	46°8° (likely 42°6° to 46°8°)	41°5°	80%, 0.04 in1 mm	10 mph16 km/h from ENE, gusts 14 mph23 km/h	59%	100%	0
Sun 2p	Rain	46°8° (likely 41°5° to 46°8°)	41°5°	80%, 0.04 in1 mm	10 mph16 km/h from ENE, gusts 18 mph29 km/h	59%	100%	0
Sun 3p	Drizzle	47°8° (likely 40°4° to 47°8°)	43°6°	70%, 0.04 in1 mm	10 mph16 km/h from ENE, gusts 21 mph34 km/h	57%	100%	0
Sun 4p	Showers	46°8° (likely 40°4° to 46°8°)	41°5°	60%, 0.04 in1 mm	10 mph16 km/h from ENE, gusts 22 mph35 km/h	61%	100%	0
Sun 5p	Showers	46°8° (likely 39°4° to 46°8°)	40°4°	60%, 0.04 in1 mm	10 mph16 km/h from ENE, gusts 23 mph37 km/h	61%	100%	0
Sun 6p	Showers	46°8° (likely 39°4° to 46°8°)	40°4°	70%, 0.04 in1 mm	15 mph24 km/h from NE, gusts 20 mph33 km/h	64%	100%	0
Sun 7p	Showers	43°6° (likely 38°3° to 43°6°)	37°3°	30%, 0.05 in1.3 mm	15 mph24 km/h from ENE, gusts 23 mph37 km/h	70%	100%	0
Sun 8p	Drizzle	41°5° (likely 38°3° to 42°6°)	34°1°	40%, 0.05 in1.3 mm	15 mph24 km/h from ENE, gusts 24 mph38 km/h	76%	100%	0
Sun 9p	Drizzle	41°5° (likely 39°4° to 42°6°)	34°1°	50%, 0.05 in1.3 mm	15 mph24 km/h from ENE, gusts 23 mph37 km/h	76%	100%	0
Sun 10p	Drizzle	41°5° (likely 39°4° to 42°6°)	34°1°	70%, 0.05 in1.3 mm	15 mph24 km/h from ENE, gusts 23 mph37 km/h	76%	100%	0
Sun 11p	Drizzle	40°4° (likely 39°4° to 42°6°)	33°1°	70%, 0.05 in1.3 mm	15 mph24 km/h from ENE, gusts 24 mph38 km/h	82%	100%	0
Mon 12a	Rain	40°4° (likely 39°4° to 41°5°)	33°1°	60%, 0.05 in1.3 mm	15 mph24 km/h from ENE, gusts 23 mph36 km/h	85%	100%	0
Mon 1a	Drizzle	40°4° (likely 39°4° to 41°5°)	32°0°	90%, 0.25 in6.4 mm	15 mph24 km/h from ENE, gusts 22 mph36 km/h	85%	100%	0
Mon 2a	Showers	40°4° (likely 39°4° to 41°5°)	32°0°	80%, 0.25 in6.4 mm	15 mph24 km/h from ENE, gusts 23 mph36 km/h	85%	100%	0
Mon 3a	Showers	40°4° (likely 39°4° to 41°5°)	32°0°	90%, 0.25 in6.4 mm	15 mph24 km/h from ENE, gusts 24 mph38 km/h	85%	100%	0
Mon 4a	Rain	40°4° (likely 39°4° to 41°5°)	32°0°	90%, 0.25 in6.4 mm	15 mph24 km/h from ENE, gusts 24 mph39 km/h	85%	100%	0
Mon 5a	Showers	38°3° (likely 38°3° to 41°5°)	29°−2°	100%, 0.25 in6.4 mm	20 mph32 km/h from ENE, gusts 26 mph42 km/h	93%	100%	0
Mon 6a	Showers	38°3° (likely 38°3° to 41°5°)	28°−2°	100%, 0.25 in6.4 mm	20 mph32 km/h from ENE, gusts 28 mph45 km/h	93%	100%	0
Mon 7a	Showers	37°3° (likely 37°3° to 41°5°)	27°−3°	100%, 0.37 in9.4 mm	20 mph32 km/h from ENE, gusts 29 mph47 km/h	96%	100%	0
Mon 8a	Rain	35°2° (likely 35°2° to 41°5°)	24°−4°	100%, 0.37 in9.4 mm	20 mph32 km/h from ENE, gusts 29 mph47 km/h	100%	100%	0
Mon 9a	Rain	37°3° (likely 37°3° to 41°5°)	26°−3°	100%, 0.37 in9.4 mm	20 mph32 km/h from ENE, gusts 29 mph46 km/h	100%	100%	0
Mon 10a	Rain	40°4° (likely 38°3° to 41°5°)	31°−1°	100%, 0.37 in9.4 mm	20 mph32 km/h from ENE, gusts 30 mph49 km/h	92%	100%	0
Mon 11a	Rain	41°5° (likely 38°3° to 41°5°)	32°0°	100%, 0.37 in9.4 mm	20 mph32 km/h from ENE, gusts 31 mph49 km/h	91%	100%	0
Mon 12p	Showers	41°5° (likely 38°3° to 41°5°)	32°0°	100%, 0.37 in9.4 mm	20 mph32 km/h from E, gusts 32 mph51 km/h	90%	100%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Showers. High 61°16°, low 39°4°. Typical 52°11° / 32°0°. Rain 0.16 in4.1 mm, 20% chance. Mostly agree.
1. Afternoon
  noon–6 PM
  Showers, 58°14°
  20% chance · 0.15 in3.8 mm
2. Evening
  6 PM–midnight
  Cloudy, 49°9°
  Dry
3. Overnight
  midnight–6 AM
  Mostly cloudy, 42°6°
  Dry
Official NWS forecast
Today: A slight chance of rain showers before 2pm. Mostly cloudy. High near 61, with temperatures falling to around 56 in the afternoon. North northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tonight: Mostly cloudy. Low around 39, with temperatures rising to around 42 overnight. North northeast wind around 5 mph. New rainfall amounts less than a tenth of an inch possible.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–66°19°
Low, likely
39°4°–45°7°
Typical high / low
52°11° / 32°0°
Wind
22 mph36 km/h, gusts 41 mph66 km/h
UV peak
2
Tomorrow, Oct 25. Rain. High 48°9°, low 34°1°. Typical 52°11° / 32°0°. Rain 0.3 in7.6 mm, 80% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 40°4°
  70% chance · 0.05 in1.3 mm
2. Afternoon
  noon–6 PM
  Rain, 47°8°
  80% chance · 0.21 in5.3 mm
3. Evening
  6 PM–midnight
  Showers, 41°5°
  70% chance · 0.29 in7.4 mm
4. Overnight
  midnight–6 AM
  Rain, 38°3°
  100% chance · 1.3 in33 mm
Official NWS forecast
Day: Rain showers after 7am. Cloudy, with a high near 48. East northeast wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
Night: Rain showers. Cloudy. Low around 34, with temperatures rising to around 38 overnight. East northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
43°6°–48°9°
Low, likely
34°1°–41°5°
Typical high / low
52°11° / 32°0°
Wind
15 mph24 km/h, gusts 28 mph45 km/h
Monday, Oct 26. Showers. High 45°7°, low 35°2°. Typical 51°11° / 31°−1°. Rain 1.1 in28 mm, 100% chance. Mostly agree.
1. Morning
  6 AM–noon
  Rain, 35°2°
  100% chance · 2.1 in53 mm
2. Afternoon
  noon–6 PM
  Rain, 41°5°
  100% chance · 0.74 in19 mm
3. Evening
  6 PM–midnight
  Rain, 41°5°
  90% chance · 0.21 in5.2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 45°7°
  90% chance · 0.06 in1.5 mm
Official NWS forecast
Day: Rain showers. Cloudy, with a high near 45. East northeast wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Night: Rain showers. Cloudy, with a low around 35. South southeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
43°6°–45°7°
Low, likely
35°2°–40°4°
Typical high / low
51°11° / 31°−1°
Wind
23 mph37 km/h, gusts 40 mph64 km/h
Tuesday, Oct 27. Showers. High 54°12°, low 41°5°. Typical 51°11° / 30°−1°. Rain 0.13 in3.3 mm, 50% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 43°6°
  40% chance
2. Afternoon
  noon–6 PM
  Cloudy, 53°11°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Mostly cloudy, with a high near 54. Chance of precipitation is 50%.
Night: A chance of rain showers before 1am. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
54°12°–56°13°
Low, likely
41°5°–42°6°
Typical high / low
51°11° / 30°−1°
Wind
18 mph29 km/h, gusts 32 mph51 km/h
UV peak
4
Wednesday, Oct 28. Mostly sunny. High 60°16°, low 40°4°. Typical 50°10° / 30°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 60.
Night: Partly cloudy, with a low around 40.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–60°16°
Low, likely
39°4°–44°7°
Typical high / low
50°10° / 30°−1°
Wind
18 mph30 km/h, gusts 36 mph58 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 62°17°, low 46°8°. Typical 50°10° / 30°−1°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 62.
Night: Mostly cloudy, with a low around 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–62°17°
Low, likely
37°3°–46°8°
Typical high / low
50°10° / 30°−1°
Wind
15 mph25 km/h, gusts 35 mph56 km/h
UV peak
3
Friday, Oct 30. Mostly cloudy. High 64°18°, low 48°9°. Typical 49°9° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 60°15°
  30% chance
4. Overnight
  midnight–6 AM
  Partly cloudy, 56°13°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after 1pm. Partly sunny, with a high near 64.
Night: A chance of rain showers. Mostly cloudy, with a low around 48. Chance of precipitation is 50%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–67°19°
Low, likely
47°8°–51°11°
Typical high / low
49°9° / 29°−2°
Wind
17 mph27 km/h, gusts 38 mph62 km/h
Saturday, Oct 31. Showers. High 57°14°, low 49°9°. Typical 48°9° / 29°−2°. Rain 0.34 in8.6 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 59°15°
  40% chance · 0.11 in2.7 mm
3. Evening
  6 PM–midnight
  Showers, 53°12°
  40% chance · 0.26 in6.7 mm
4. Overnight
  midnight–6 AM
  Showers, 47°8°
  30% chance · 0.05 in1.2 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
50°10°–63°17°
Low, likely
42°6°–56°13°
Typical high / low
48°9° / 29°−2°
Wind
18 mph29 km/h, gusts 37 mph59 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 51°11°, low 43°6°. Typical 48°9° / 28°−2°. Rain 0.14 in3.6 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 46°8°
  20% chance · 0.04 in1 mm
2. Afternoon
  noon–6 PM
  Cloudy, 48°9°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 40°5°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
41°5°–59°15°
Low, likely
32°0°–56°13°
Typical high / low
48°9° / 28°−2°
Wind
17 mph27 km/h, gusts 46 mph74 km/h
UV peak
1
Monday, Nov 2. Cloudy. High 52°11°, low 39°4°. Typical 47°8° / 28°−2°. Rain 0.15 in3.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 53°12°
  30% chance · 0.04 in1 mm
3. Evening
  6 PM–midnight
  Mostly clear, 50°10°
  30% chance · 0.02 in0.6 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
50°10°–59°15°
Low, likely
31°−1°–53°12°
Typical high / low
47°8° / 28°−2°
Wind
20 mph33 km/h, gusts 45 mph72 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 39°.
Tomorrow
83% chance of rain, high 48°, low 34°, cooling off.
Monday
100% chance of rain, high 45°, low 35°, cooling off.
Rest of week
Highs 51–64°; chance of precipitation on Tuesday, Saturday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (FSD) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Vermillion River at Lake Thompson

18 mi

Below flood stage

Level: 1687 ft

Reading from Sat 12 PM · NWS gauge page

Big Sioux River at Lake Poinsett Inlet/Outlet

22 mi

Below flood stage

Level: 1651 ft

Reading from Sat 12 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 76% less heating than a typical week.

This week 41Typical 171

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 38
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 14 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 39°F).

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

De Smet · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

Today’s expected high is 9°5° warmer than typical.

Last 7 days vs normal

On average 10°5° warmer than normal (daily mean temperature).

+8°+4°SunOct 18
+9°+5°MonOct 19
+12°+7°TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Erwin weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 34 min; Losing 2 min 53 s a day; shortest Dec 21, 1 h 44 min less
Golden hour: 5:49–6:48 PM; Morning 7:38–8:37 AM
Blue hour: 6:48–7:00 PM; Morning 7:26–7:38 AM; first light 7:26 AM

Stars tonight? Poor

Clouds most of the night (about 77% cover).

Moon

Waxing gibbous

97% lit · growing

Today: sets 6:09 AM · rises 5:29 PM
Full moon: Oct 25
New moon: Nov 9

Looking southwest from Erwin. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.