Amount of precipitationAmount of precipitation(mm)
Type of precipitationType of precipitation
Risks:
Precipitation riskPrecipitation risk(%)
Storm risk.(%)
Brightness:
Visibility(km)
Pressure(hPa)
UV
Temperature
Air tempAir temp
Perceived temp
Air temp
Perceived temp
Offshore
Offshore wind
Offshore sea(m)
15
10
5
0
30
20
10
0
10
5
0
15
10
5
0
5
0
1
0.5
0
3
0
40
30
20
10
0
90
80
70
60
50
40
Fri 22
01h
02h
03h
04h
05h
06h
07h
08h
09h
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
20h
21h
22h
23h
00h
Run : 20/05 00ZMesh : 1kmUpdated, 7h agoUpdate imminent
Fri 22
01h
02h
03h
04h
05h
06h
07h
08h
09h
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
20h
21h
22h
23h
00h
50°NENE
55°NEENE
30°NENNE
70°EENE
80°EE
85°EE
70°EENE
70°EENE
80°EE
85°EE
95°EE
110°EESE
135°SESE
140°SESE
130°SESE
115°SEESE
110°EESE
120°SEESE
130°SESE
140°SESE
90°EE
105°EESE
80°EE
90°EE
12111
23121
12111
24121
36242
36242
36242
47242
59362
510362
59362
59362
47242
36242
36242
47242
48252
48252
35131
12111
12111
23121
35131
36242
35131
35131
23121
36242
611372
612373
612373
814493
10185113
11216134
12226144
11216134
11216134
10195123
10195123
11216134
11216134
11216134
10185113
713483
611372
611372
510362
713483
0.5
0.4
0.4
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
220°SWSW
215°SWSW
225°SWSW
230°SWSW
225°SWSW
235°SWSW
225°SWSW
225°SWSW
225°SWSW
225°SWSW
225°SWSW
225°SWSW
225°SWSW
225°SWSW
225°SWSW
235°SWSW
225°SWSW
225°SWSW
235°SWSW
225°SWSW
225°SWSW
225°SWSW
225°SWSW
225°SWSW
0.5
0.4
0.4
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
10
10
10
10
9
10
9
10
10
9
9
9
9
9
9
9
8
8
8
9
8
8
8
8
220
210
180
160
160
170
170
170
170
180
180
180
170
170
150
140
130
120
130
140
140
150
150
150
2.0
1.4
1.1
1.4
2.3
3.4
4.4
5.1
5.1
4.7
4.1
3.3
2.5
1.9
1.6
1.7
2.3
3.4
4.4
5.1
5.3
5.0
4.4
3.7
1660
1560
1559
1559
1559
1559
1559
1558
1558
1558
1559
1559
1559
1560
1660
1660
1660
1661
1661
1661
1661
1661
1660
1660
0
0
35
75
80
80
85
75
65
60
10
0
5
5
10
10
10
5
5
5
5
5
5
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
4
3
2
0.5
0.5
0.5
2
5
15
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
1027
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1025
1025
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
0
0
0
0
0
0
0
0
1
2
4
6
7
8
7
6
4
3
1
0
0
0
0
0
1253
1153
1151
1151
1151
1050
1050
1051
1254
1458
1763
2067
2170
2272
2373
2474
2475
2476
2476
2374
2271
2068
1965
1864
1152
1151
1151
1049
949
948
948
1049
1253
1660
2069
2476
3085
3188
3085
2985
2984
2882
2781
2882
2577
1967
1864
1762
35113
47224
47224
59236
611237
612337
713348
9163410
11204612
10193512
9173511
9173511
815349
713348
713348
713348
611237
59236
47224
47224
48225
48225
510236
59236
0.9
0.9
0.9
0.8
0.8
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.6
0.6
0.6
0.6
0.5
0.5
0.5
0.5
0.5
0.5
Forecasts established for the approach to the port, up to 1 mile from the coast, in local time CaptionGlossary
Expert opinion
A southerly, moderate and very variable flow prevails over the whole area.
For Saint-Nazaire : No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Fair weather with mostly clear skies.In the evening, clear skies. E wind force 2 continuing all day. Gusts reaching 12 knots in the morning. Smooth to slight sea. Low, fairly long swell from SW. Visibility reduced by fog becoming excellent in the middle of the day.
semaphore stations
Station St Nazaire-Montoir located 6 km from Saint-Nazaire
* +33 1 77 86 86 86: short number of forecasts for France accessible from France - €2.99 per call** 0899 70 12 34: number of forecasts for France and the World accessible from France - €2.99 per call