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Nurlat

54.429° N   50.806° E  ·  157 M
12 /100
PEAK
Cloud will spoil it. Not a night for the telescope.
NO USABLE WINDOW · ASTRO DARK 23:00–02:00 · MOON 0%
Transparency
0.70
Seeing
1.00
Cloud
38%
Moon
0%

Clouded out tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
19
20
21
22
23
00
01
02
03
04
0
1
4
12
4
8
6
10
10
0
Low cloud
0%
0%
2%
4%
0%
1%
0%
1%
20%
72%
Mid cloud
7%
39%
92%
70%
100%
92%
100%
83%
31%
1%
High cloud
4%
16%
65%
90%
83%
46%
33%
23%
0%
0%
Transparency
0.73
0.70
0.39
0.37
0.37
0.10
0.28
0.10
0.23
0.21
Seeing
0.83
0.81
0.75
0.77
0.84
1.00
1.00
1.00
1.00
0.98
Moon clear
0%
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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
19 Clouded out · 0/100
Starting from
100
Cloud
−8
Transparency
−10
Seeing
−3
Moonlight
−0
Darkness
−78
Score
0
CLOUD 10% LOW 0% MID 7% HIGH 4% SUN 1.3° MOON 2.9° / 0% WIND 4 TEMP 21°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.

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.

1921230103
CONDITIONS STAY BELOW THE USABLE THRESHOLD
SET UP 02:30 · OBSERVE 03:00–04:00 · 1H · MEAN 35

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

1921230103
HIGH CLOUD CLEARS 03:00CLOUD RETURNS 04:00MOONLIGHT IGNORED FOR THIS TARGET
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

1921230103
CONDITIONS STAY BELOW THE USABLE THRESHOLD
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

1921230103
CONDITIONS STAY BELOW THE USABLE THRESHOLD
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

1921230103
CONDITIONS STAY BELOW THE USABLE THRESHOLD
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The next week of nights

Tonight · 12 Aug
12
Clouded out
MOON 0%
Tomorrow · 13 Aug
77
Excellent
MOON 2%
22:00–02:00
Friday · 14 Aug
43
Fair
MOON 6%
22:00–23:00
Saturday · 15 Aug
0
Clouded out
MOON 13%
Sunday · 16 Aug
18
Poor
MOON 21%
Monday · 17 Aug
50
Fair
MOON 30%
Tuesday · 18 Aug
54
Fair
MOON 39%
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About this forecast

Conditions for Nurlat, Russia 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 →