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Observed 11:25 PM CDT at KATY

Twin Brooks, SD weather

Clear and 43°6°, 14°8° warmer than a typical Oct 24, rain tomorrow ~3–11 PM (79%).

Today: low 39°4° (likely 39°4° to 45°7°), high 67°19° (likely 66°19° to 69°21°).

Forecasts agree

Now 43°6°

Clear

Wind
3 mph5 km/h
From the north-northwest. Up to 7 mph11 km/h through 11 AM
Dew point
34°1°
Dry, static shocks likely
UV tomorrow
2Low
Low all day (peak 2)
Pressure
30.36 inHg1028 hPa
Rising slowly · +0.04 inHg+1.2 hPa in 3 h

Next 2 hours

No precipitation expected in the next 2 hours.

Next 48 hours

20°11° cooler than this time yesterday (64°18° then, 45°7° now)

Good hours for
  • Dry until 1 PM tomorrow
  • Low 38°3° tomorrow at 6 AM
  • Rain tomorrow from 1 PM (100%, 5.8 in147 mm)
  • High 50°10° tomorrow at 2 PM
  1. TonightDown to 39°4° by 5 AM · Partly cloudy
  2. Tomorrow morningUp to 47°8° by 11 AM · Cloudy
  3. Tomorrow afternoonNear 49°9° · Rain 1–6 PM (50%)
  4. Tomorrow nightDown to 40°4° by 4 AM · Rain all night (80%)
  5. Monday morningUp to 41°5° by 10 AM · Rain all morning (90%)
  6. Monday afternoonNear 42°6° · Rain all afternoon (100%)
  7. Monday nightNear 41°5° · Rain all night (100%)
Hourly forecast, next 48 hours, in the place's local time
HourConditionsTemperatureFeels likePrecipitationWindHumidityCloud coverUV index
Sat 11pCloudy44°7° (likely 42°6° to 46°8°)41°5°0%6 mph10 km/h from WNW, gusts 7 mph11 km/h68%75%0
Sun 12aCloudy42°6° (likely 41°5° to 45°7°)38°3°0%6 mph10 km/h from WNW, gusts 8 mph13 km/h70%78%0
Sun 1aClear42°6° (likely 40°4° to 45°7°)38°3°0%7 mph11 km/h from NW, gusts 8 mph13 km/h67%34%0
Sun 2aClear40°4° (likely 38°3° to 43°6°)36°2°0%6 mph10 km/h from NW, gusts 8 mph13 km/h67%27%0
Sun 3aClear40°4° (likely 37°3° to 42°6°)36°2°0%5 mph8 km/h from NW, gusts 7 mph11 km/h64%26%0
Sun 4aClear41°5° (likely 37°3° to 41°5°)39°4°0%3 mph5 km/h from NW, gusts 7 mph11 km/h57%37%0
Sun 5aClear39°4° (likely 37°3° to 41°5°)37°3°0%3 mph5 km/h from NW, gusts 7 mph11 km/h62%39%0
Sun 6aCloudy38°3° (likely 36°2° to 41°5°)36°2°0%3 mph5 km/h from NNW, gusts 6 mph9 km/h64%80%0
Sun 7aCloudy38°3° (likely 34°1° to 41°5°)38°3°0%2 mph3 km/h from NNW, gusts 6 mph10 km/h62%83%0
Sun 8aCloudy40°4° (likely 34°1° to 42°6°)40°4°0%2 mph3 km/h from NNW, gusts 7 mph11 km/h59%85%0
Sun 9aCloudy43°6° (likely 37°3° to 43°6°)41°5°5%3 mph5 km/h from NNW, gusts 6 mph10 km/h57%85%0
Sun 10aCloudy45°7° (likely 40°4° to 45°7°)44°7°5%3 mph5 km/h from N, gusts 8 mph12 km/h58%88%1
Sun 11aCloudy47°8° (likely 41°5° to 47°8°)45°7°10%5 mph8 km/h from N, gusts 9 mph14 km/h53%91%2
Sun 12pCloudy47°8° (likely 44°7° to 47°8°)45°7°10%5 mph8 km/h from N, gusts 7 mph12 km/h53%99%2
Sun 1pCloudy48°9° (likely 44°7° to 48°9°)46°8°40%, 0.07 in1.8 mm5 mph8 km/h from NNE, gusts 7 mph11 km/h54%100%0
Sun 2pRain50°10° (likely 44°7° to 50°10°)48°9°40%, 0.07 in1.8 mm6 mph10 km/h from NNE, gusts 8 mph13 km/h50%100%0
Sun 3pRain50°10° (likely 44°7° to 50°10°)48°9°50%, 0.07 in1.8 mm6 mph10 km/h from NNE, gusts 8 mph13 km/h50%100%0
Sun 4pRain50°10° (likely 43°6° to 50°10°)48°9°50%, 0.07 in1.8 mm6 mph10 km/h from NNE, gusts 8 mph13 km/h50%100%0
Sun 5pRain50°10° (likely 42°6° to 50°10°)48°9°50%, 0.07 in1.8 mm6 mph10 km/h from NNE, gusts 9 mph14 km/h52%100%0
Sun 6pRain50°10° (likely 42°6° to 50°10°)48°9°50%, 0.07 in1.8 mm5 mph8 km/h from NNE, gusts 7 mph11 km/h54%100%0
Sun 7pDrizzle46°8° (likely 41°5° to 46°8°)44°7°60%, 0.04 in1 mm5 mph8 km/h from NNE, gusts 7 mph12 km/h65%100%0
Sun 8pRain44°7° (likely 41°5° to 45°7°)41°5°60%, 0.04 in1 mm6 mph10 km/h from NNE, gusts 11 mph18 km/h70%100%0
Sun 9pRain44°7° (likely 41°5° to 44°7°)41°5°80%, 0.04 in1 mm6 mph10 km/h from NNE, gusts 11 mph17 km/h70%100%0
Sun 10pDrizzle44°7° (likely 41°5° to 44°7°)41°5°60%, 0.04 in1 mm6 mph10 km/h from NNE, gusts 10 mph16 km/h73%100%0
Sun 11pRain44°7° (likely 41°5° to 44°7°)41°5°50%, 0.04 in1 mm6 mph10 km/h from NE, gusts 11 mph18 km/h73%100%0
Mon 12aDrizzle43°6° (likely 40°4° to 43°6°)39°4°30%, 0.04 in1 mm6 mph10 km/h from NE, gusts 12 mph19 km/h76%100%0
Mon 1aDrizzle43°6° (likely 40°4° to 43°6°)39°4°50%, 0.08 in2 mm7 mph11 km/h from NE, gusts 16 mph25 km/h76%100%0
Mon 2aDrizzle42°6° (likely 40°4° to 43°6°)38°3°50%, 0.08 in2 mm7 mph11 km/h from NE, gusts 13 mph21 km/h79%100%0
Mon 3aRain42°6° (likely 39°4° to 43°6°)38°3°70%, 0.08 in2 mm7 mph11 km/h from NE, gusts 14 mph23 km/h79%100%0
Mon 4aDrizzle40°4° (likely 38°3° to 42°6°)35°2°60%, 0.08 in2 mm8 mph13 km/h from NE, gusts 15 mph24 km/h85%100%0
Mon 5aCloudy40°4° (likely 38°3° to 42°6°)35°2°80%, 0.08 in2 mm8 mph13 km/h from NE, gusts 13 mph20 km/h82%100%0
Mon 6aCloudy37°3° (likely 37°3° to 42°6°)30°−1°80%, 0.08 in2 mm9 mph14 km/h from NE, gusts 12 mph20 km/h92%100%0
Mon 7aRain38°3° (likely 38°3° to 42°6°)32°0°90%, 0.27 in6.9 mm9 mph14 km/h from ENE, gusts 12 mph20 km/h89%100%0
Mon 8aRain39°4° (likely 38°3° to 41°5°)33°1°90%, 0.27 in6.9 mm9 mph14 km/h from ENE, gusts 14 mph22 km/h85%100%0
Mon 9aRain40°4° (likely 38°3° to 41°5°)34°1°90%, 0.27 in6.9 mm9 mph14 km/h from ENE, gusts 12 mph20 km/h85%100%0
Mon 10aRain41°5° (likely 38°3° to 41°5°)35°2°90%, 0.27 in6.9 mm10 mph16 km/h from ENE, gusts 13 mph22 km/h89%100%0
Mon 11aRain41°5° (likely 39°4° to 41°5°)35°2°90%, 0.27 in6.9 mm10 mph16 km/h from ENE, gusts 15 mph24 km/h93%100%0
Mon 12pRain42°6° (likely 38°3° to 42°6°)36°2°90%, 0.27 in6.9 mm12 mph19 km/h from ENE, gusts 16 mph26 km/h89%100%0
Mon 1pRain42°6° (likely 38°3° to 42°6°)36°2°100%, 0.33 in8.4 mm12 mph19 km/h from ENE, gusts 17 mph28 km/h89%100%0
Mon 2pDrizzle43°6° (likely 38°3° to 43°6°)37°3°100%, 0.33 in8.4 mm12 mph19 km/h from ENE, gusts 18 mph29 km/h86%100%0
Mon 3pRain43°6° (likely 38°3° to 43°6°)37°3°100%, 0.33 in8.4 mm12 mph19 km/h from ENE, gusts 19 mph31 km/h89%100%0
Mon 4pRain43°6° (likely 37°3° to 43°6°)37°3°100%, 0.33 in8.4 mm12 mph19 km/h from ENE, gusts 19 mph31 km/h89%100%0
Mon 5pRain42°6° (likely 37°3° to 42°6°)36°2°100%, 0.33 in8.4 mm12 mph19 km/h from ENE, gusts 20 mph32 km/h93%100%0
Mon 6pRain41°5° (likely 36°2° to 41°5°)35°2°100%, 0.33 in8.4 mm10 mph16 km/h from ENE, gusts 21 mph34 km/h96%100%0
Mon 7pRain40°4° (likely 37°3° to 40°4°)33°1°100%, 0.26 in6.6 mm10 mph16 km/h from ENE, gusts 20 mph32 km/h100%100%0
Mon 8pRain40°4° (likely 38°3° to 41°5°)33°1°100%, 0.26 in6.6 mm10 mph16 km/h from ENE, gusts 24 mph38 km/h100%100%0
Mon 9pRain41°5° (likely 38°3° to 41°5°)35°2°100%, 0.26 in6.6 mm10 mph16 km/h from E, gusts 22 mph35 km/h96%100%0
Mon 10pRain40°4° (likely 39°4° to 41°5°)33°1°100%, 0.26 in6.6 mm10 mph16 km/h from E, gusts 23 mph38 km/h100%100%0

Days ahead

Shaded: typical range for these dates (1991–2020)
  1. Today, Oct 24. Drizzle. High 67°19°, low 39°4°. Typical 53°12° / 31°−1°. Rain 0.21 in5.3 mm, 70% chance. Forecasts agree.
    1. Overnight

      midnight–6 AM

      Clear, 39°4°

      Dry

    Official NWS forecast

    Tonight: Mostly cloudy, with a low around 39. Northwest wind 3 to 7 mph.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    66°19°–69°21°
    Low, likely
    39°4°–45°7°
    Typical high / low
    53°12° / 31°−1°
    Wind
    28 mph44 km/h, gusts 48 mph77 km/h
    UV peak
    2
  2. Tomorrow, Oct 25. Rain. High 50°10°, low 36°2°. Typical 52°11° / 30°−1°. Rain 0.2 in5.1 mm, 50% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 40°4°

      Dry

    2. Afternoon

      noon–6 PM

      Rain, 50°10°

      50% chance · 0.35 in8.9 mm

    3. Evening

      6 PM–midnight

      Rain, 44°7°

      80% chance · 0.27 in6.9 mm

    4. Overnight

      midnight–6 AM

      Rain, 40°4°

      80% chance · 0.44 in11 mm

    Official NWS forecast

    Day: A chance of rain after 1pm. Cloudy, with a high near 50. North wind 2 to 6 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

    Night: Rain. Cloudy. Low around 36, with temperatures rising to around 40 overnight. North northeast wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    44°7°–50°10°
    Low, likely
    34°1°–41°5°
    Typical high / low
    52°11° / 30°−1°
    Wind
    9 mph15 km/h, gusts 17 mph27 km/h
    UV peak
    2
  3. Monday, Oct 26. Rain. High 43°6°, low 35°2°. Typical 52°11° / 30°−1°. Rain 0.88 in22 mm, 100% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Rain, 39°4°

      90% chance · 1.4 in36 mm

    2. Afternoon

      noon–6 PM

      Rain, 43°6°

      100% chance · 1.9 in49 mm

    3. Evening

      6 PM–midnight

      Rain, 40°4°

      100% chance · 1.5 in37 mm

    4. Overnight

      midnight–6 AM

      Rain, 41°5°

      100% chance · 0.23 in5.7 mm

    Official NWS forecast

    Day: Rain. Cloudy, with a high near 43. East northeast wind around 12 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Night: Rain. Cloudy, with a low around 35. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    41°5°–44°7°
    Low, likely
    35°2°–40°4°
    Typical high / low
    52°11° / 30°−1°
    Wind
    16 mph26 km/h, gusts 30 mph48 km/h
  4. Tuesday, Oct 27. Rain. High 54°12°, low 43°6°. Typical 51°11° / 29°−2°. Rain 0.27 in6.9 mm, 70% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Drizzle, 45°7°

      70% chance · 0.03 in0.7 mm

    2. Afternoon

      noon–6 PM

      Sunny, 53°12°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 50°10°

      30% chance · 0.04 in1 mm

    4. Overnight

      midnight–6 AM

      Clear, 48°9°

      20% chance

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Rain likely before 1pm. Partly sunny, with a high near 54. South southwest wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

    Night: A chance of rain between 7pm and 1am. Mostly cloudy, with a low around 43. South wind 5 to 9 mph. Chance of precipitation is 30%.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    51°11°–58°14°
    Low, likely
    40°4°–43°6°
    Typical high / low
    51°11° / 29°−2°
    Wind
    19 mph30 km/h, gusts 40 mph64 km/h
    UV peak
    4
  5. Wednesday, Oct 28. Partly sunny. High 61°16°, low 41°5°. Typical 50°10° / 29°−2°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 45°7°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 58°14°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 50°10°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 42°6°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly sunny, with a high near 61. West southwest wind around 10 mph, with gusts as high as 21 mph.

    Night: Mostly clear, with a low around 41. West wind 3 to 7 mph.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    54°12°–62°17°
    Low, likely
    39°4°–48°9°
    Typical high / low
    50°10° / 29°−2°
    Wind
    17 mph28 km/h, gusts 45 mph72 km/h
    UV peak
    3
  6. Thursday, Oct 29. Partly sunny. High 60°16°, low 44°7°. Typical 50°10° / 28°−2°. Dry. Mostly agree. Best day outdoors this week.
    1. Morning

      6 AM–noon

      Sunny, 41°5°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 56°13°

      Dry

    3. Evening

      6 PM–midnight

      Partly cloudy, 49°9°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 46°8°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly sunny, with a high near 60.

    Night: Partly cloudy, with a low around 44.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    Best day outdoors this week: the one dry, mild day the forecasts agree on (high 60°16°).

    High, likely
    54°12°–60°16°
    Low, likely
    37°3°–44°7°
    Typical high / low
    50°10° / 28°−2°
    Wind
    14 mph22 km/h, gusts 39 mph62 km/h
    UV peak
    3
  7. Friday, Oct 30. Mostly cloudy. High 63°17°, low 46°8°. Typical 49°9° / 28°−2°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 49°10°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 56°13°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 52°11°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 50°10°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Partly sunny, with a high near 63.

    Night: A chance of rain after 7pm. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    50°10°–64°18°
    Low, likely
    40°4°–48°9°
    Typical high / low
    49°9° / 28°−2°
    Wind
    21 mph34 km/h, gusts 31 mph50 km/h
    UV peak
    1
  8. Saturday, Oct 31. Rain. High 60°16°, low 47°8°. Typical 48°9° / 28°−2°. Rain 0.14 in3.6 mm, 50% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 51°10°

      20% chance

    2. Afternoon

      noon–6 PM

      Cloudy, 59°15°

      40% chance · 0.02 in0.6 mm

    3. Evening

      6 PM–midnight

      Drizzle, 55°13°

      40% chance · 0.1 in2.5 mm

    4. Overnight

      midnight–6 AM

      Drizzle, 50°10°

      40% chance · 0.07 in1.8 mm

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A chance of rain. Mostly cloudy, with a high near 60. Chance of precipitation is 50%.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    51°11°–68°20°
    Low, likely
    40°4°–53°12°
    Typical high / low
    48°9° / 28°−2°
    Wind
    17 mph28 km/h, gusts 27 mph43 km/h
    UV peak
    2
  9. Sunday, Nov 1. Drizzle. High 57°14°, low 47°8°. Typical 48°9° / 27°−3°. Rain 0.12 in3 mm, 40% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Mostly sunny, 51°11°

      30% chance

    2. Afternoon

      noon–6 PM

      Mostly sunny, 57°14°

      Dry

    3. Evening

      6 PM–midnight

      Partly cloudy, 51°11°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 47°8°

      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°–66°19°
    Low, likely
    34°1°–56°13°
    Typical high / low
    48°9° / 27°−3°
    Wind
    17 mph28 km/h, gusts 26 mph42 km/h
    UV peak
    3
  10. Monday, Nov 2. Cloudy. High 57°14°, low 44°7°. Typical 47°8° / 27°−3°. Rain 0.33 in8.4 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 49°10°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 58°15°

      20% chance · 0.05 in1.1 mm

    3. Evening

      6 PM–midnight

      Partly cloudy, 50°10°

      30% chance · 0.02 in0.5 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
    51°11°–62°17°
    Low, likely
    32°0°–50°10°
    Typical high / low
    47°8° / 27°−3°
    Wind
    31 mph51 km/h, gusts 56 mph90 km/h
    UV peak
    3

The outlook

  1. Today

    72% chance of rain, high 67°, low 39°.

  2. Tomorrow

    52% chance of rain, high 50°, low 36°, cooling off.

  3. Monday

    95% chance of rain, high 43°, low 35°, cooling off.

  4. Rest of week

    Highs 54–63°; chance of precipitation on Tuesday, Saturday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (ABR) (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

South Fork Whetstone River near Milbank

8.3 mi
Below flood stage
Level
1104 ft
Flow
under 1 cfs

Reading from Sat 10:15 PM · NWS gauge page

North Fork Whetstone River near Milbank

11 mi
Below flood stage
Level
1050 ft
Flow
1 cfs

Reading from Sat 10:15 PM · NWS gauge page

Whetstone River above Big Stone City

14 mi
Below flood stage
Level
1.3 ft
Flow
8 cfs

Reading from Sat 10 PM · NWS gauge page

North Fork Yellow Bank River near Milbank

15 mi
Below flood stage
Level
1033 ft

Reading from Sat 10:15 PM · NWS gauge page

For your home

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

Heating this week

About 75% less heating than a typical week.

This week 44Typical 174

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F
41
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 16 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 34°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?

Summit 1 W · official normals 1991–2020 · records 1956–2026

Oct 24, today vs a typical year

Today’s expected high is 14°8° warmer than typical.

Normal high / low
53°12° / 31°−1°
Forecast high / low
67°19° / 39°4°
Record high
78°26° in 1989
Record low
7°−14° in 2020

Last 7 days vs normal

On average 15°8° warmer than normal (daily mean temperature).

  1. +9°+5°MonOct 19
  2. +10°+5°TueOct 20
  3. +14°+8°WedOct 21
  4. +11°+6°ThuOct 22
  5. +19°+10°FriOct 23
  6. +26°+14°SatOct 24
  7. —SunOct 25

Twin Brooks weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Sunrise 7:55 AM, sunset 6:26 PM.

Daylight
10 h 31 min
Losing 2 min 58 s a day; shortest Dec 21, 1 h 47 min less
Golden hour
5:45–6:45 PM
Morning 7:36–8:36 AM
Blue hour
6:45–6:56 PM
Morning 7:25–7:36 AM; first light 7:25 AM

Stars tonight? Poor

Clouds most of the night (about 53% cover).

Moon

Waxing gibbous

99% lit · growing

Today
sets 6:07 AM · rises 5:26 PM
Full moon
Oct 25
New moon
Nov 9
Looking west from Twin Brooks. The highest point on the skyline is about 3,300 ft, 31 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.