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Criciúma

-28.677° S   49.370° W  ·  50 M
3 /100
PEAK
Cloud will spoil it. Not a night for the telescope.
NO USABLE WINDOW · ASTRO DARK 20:00–06:00 · MOON 0%
Transparency
0.10
Seeing
1.00
Cloud
71%
Moon
0%

Clouded out tonight

Hour by hour, local to Criciúma. Colour encodes the score and nothing else; every other measurement is luminance.

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
18
19
20
21
22
23
00
01
02
03
04
05
06
07
0
17
1
1
0
2
3
1
0
0
0
0
2
0
Low cloud
15%
27%
73%
90%
74%
69%
64%
80%
88%
98%
91%
95%
44%
42%
Mid cloud
99%
46%
93%
61%
95%
84%
62%
77%
73%
64%
61%
72%
68%
68%
High cloud
95%
31%
45%
40%
35%
17%
23%
51%
76%
69%
99%
98%
99%
93%
Transparency
0.16
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.16
Seeing
1.00
1.00
1.00
1.00
0.97
1.00
0.98
1.00
1.00
1.00
1.00
0.95
0.98
1.00
Moon clear
0%
down
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Inspect

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Why this hour scored what it did
18 Clouded out · 0/100
Starting from
100
Cloud
−96
Transparency
−1
Seeing
−0
Moonlight
−0
Darkness
−3
Score
0
CLOUD 100% LOW 15% MID 99% HIGH 95% SUN -2.2° MOON 1.0° / 0% WIND 1 TEMP 14°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.
Tonight's limiting factor
When a clear gap is worth driving for

Ask how long the gap is relative to your setup time and your exposure length. A two-hour gap is a real session for a visual observer and close to worthless for someone doing four-minute subs on a target that needs three hours.

What are you doing tonight?

The same forecast, weighted for the target. Planetary work barely cares about moonlight; long exposures die on high cloud a visual observer would never notice.

NO USABLE WINDOW FOR THIS TARGET TONIGHT

Darkness and moonlight dominate. Faint fuzzies need a genuinely dark sky more than they need steady air.

18202200020406
CLOUD NEVER DROPS BELOW 71%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Seeing is everything and moonlight is irrelevant. Bright targets punch through twilight, so darkness barely counts.

18202200020406
CLOUD NEVER DROPS BELOW 71%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Tolerates soft seeing, but high cloud wrecks a wide frame and moonlight raises the background everywhere.

18202200020406
CLOUD NEVER DROPS BELOW 71%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Needs conditions to hold still for hours. Sustained transparency matters more than any single good hour.

18202200020406
CLOUD NEVER DROPS BELOW 71%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Naked eye, whole sky. Total cloud and moonlight are the only things that count.

18202200020406
CLOUD NEVER DROPS BELOW 71%
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The next week of nights

Tonight · 12 Aug
3
Clouded out
MOON 0%
Tomorrow · 13 Aug
0
Clouded out
MOON 3%
Friday · 14 Aug
0
Clouded out
MOON 7%
Saturday · 15 Aug
19
Poor
MOON 15%
Sunday · 16 Aug
39
Fair
MOON 23%
21:00–22:00
Monday · 17 Aug
73
Good
MOON 32%
03:00–04:00
Tuesday · 18 Aug
35
Fair
MOON 42%
03:00–04:00
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Nearby locations

About this forecast

Conditions for Criciúma, Brazil are computed from the MET Norway forecast model for these exact coordinates, combined with sun and moon positions we calculate directly. The score weighs cloud cover by layer, atmospheric transparency, estimated seeing, moonlight and how dark the sky actually gets. Read the full method →