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)
20
15
10
5
0
40
30
20
10
0
10
5
0
25
20
15
10
5
10
5
0
0.5
0
3
0
30
25
20
15
10
80
70
60
50
Thu 30
22h
23h
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
20h
21h
Run : 29/04 00ZMesh : 4kmUpdated, 17min agoUpdate imminent
Thu 30
22h
23h
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
20h
21h
95°EE
90°EE
90°EE
80°EE
85°EE
90°EE
95°EE
100°EE
90°EE
95°EE
100°EE
100°EE
110°EESE
120°SEESE
130°SESE
160°SSSE
180°SS
190°SS
190°SSSW
205°SWSSW
200°SSSW
205°SWSSW
210°SWSSW
225°SWSW
815493
814493
814493
611372
713483
815493
814493
815493
713483
815493
9164103
815493
814493
612373
611372
612373
713483
814493
815493
815493
713483
612373
510362
48252
13247154
15278174
16298185
15278174
17329205
17319195
16298185
16308195
17319195
17329205
16308195
17319195
15288174
15278174
15278174
15288174
16298185
18339215
17319195
17329205
16298185
15278174
13257164
11206124
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.3
0.1
0.1
0
0
0
0
0
0.1
0.1
0.1
0
0.1
0.1
0.1
0
0
0
0
0
0.1
0.1
0.1
0.1
0.1
230°SWSW
225°SWSW
225°SWSW
225°SWSW
190°SS
190°SS
270°WW
260°WW
270°WW
225°SWSW
225°SWSW
220°SWSW
220°SWSW
220°SWSW
220°SWSW
225°SWSW
225°SWSW
185°SS
190°SS
190°SS
210°SWSSW
235°SWWSW
230°SWSW
225°SWSW
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
8
10
12
11
12
11
10
11
11
14
14
15
15
14
14
14
12
12
13
10
8
8
11
8
150
190
230
240
250
270
290
330
340
340
340
350
360
350
330
310
300
290
290
310
230
320
320
310
1.5
1.4
1.8
2.7
3.8
4.8
5.4
5.4
5.0
4.2
3.3
2.3
1.6
1.3
1.5
2.3
3.5
4.6
5.4
5.6
5.2
4.5
3.6
2.6
1458
1458
1457
1457
1458
1457
1457
1457
1457
1457
1457
1457
1457
1457
1457
1458
1458
1458
1457
1457
1457
1457
1457
1457
100
90
80
75
75
85
70
75
80
80
75
80
70
65
70
55
55
60
70
65
70
80
95
95
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
100
100
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
10
0
0
0
10
10
15
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
>20
10
5
1011
1011
1012
1012
1012
1012
1012
1012
1013
1013
1013
1014
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1017
1017
0
0
0
0
0
0
0
0
0
0
0
1
1
3
4
5
5
5
4
3
1
1
0
0
1864
1763
1763
1762
1762
1762
1661
1661
1660
1660
1660
1661
1762
1864
1967
2068
2069
2067
2067
1966
1865
1864
1762
1660
1558
1558
1458
1458
1457
1456
1456
1356
1356
1355
1355
1458
1660
1864
2171
2678
2475
2171
2169
2067
1865
1763
1560
1458
814349
814349
814349
11204612
815349
11204612
10193512
11204612
11214613
12234614
11214613
12224614
11204612
11204612
11204612
10193512
10183511
9173511
815349
815349
59236
47224
48225
48225
0.5
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.6
0.6
0.6
0.6
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 northeasterly, moderate and very variable flow prevails over the whole area.
For Saint-Nazaire : No gale warning.
We are 85% sure of the situation, because the high pressure system could move in more quickly than forecast.
In the evening, very cloudy skies to overcast. Light rain. ESE wind force 3. Gusts reaching 15 knots in the evening. Smooth sea. Low, fairly long swell from SW. Good visibility.
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