PredictWind - key to map symbols?

[Phil_B]

Hi everybody and apologies for asking a question on my first post. I have just received a message from friends who are sailing from Norway to Svalbard who have asked me to research the meaning of a symbol which has appeared on their forecast as they are approaching the southern cape, they are using the PredictWind app. The symbol is a series of dashed lines and an ice crystal, coming from the east ie the prevailing wind direction. My thoughts are that is it fog and/or rime ice but that's just a guess.
Anyone with more knowledge able to confirm or suggest an alternative meaning. Could it even be a warning of sea ice?
There is nothing in the help pages or support section on the PredictWind website that I have found.
Thanks Phil

[SailingHarmonie]

If you have the option for "GMDSS Graphical Forecast" enabled key weather data is extracted from the GMDSS Text forecasts, and displayed as graphical symbols on the GRIB charts. The symbols you describe are the graphical representation of this Sea Ice data that is in the GMDSS Region XIX forecast:

ICE BULLETIN FOR METAREA 19 ISSUED BY THE NORWEGIAN ICE SERVICE
(ISTJENESTEN@MET.NO) AT 23 UTC 23 AUG
LITKE TROUGH
ICE N OF 8041N 01444E, 8103N 01655E, 8104N 01819E
A3
ICE N OF 7730N 00407E, 7930N 00738E, 7953N 00959E
B3
ICE N OF 7535N 00000E, 7546N 00105E, 7730N 00407E
METAREA 1 NORTH ICELAND
ICE N OF 7233N 01404W, 7311N 01429W, 7445N 00400W
METAREA 20 01020
ICE N OF 8110N 02959E, 8115N 03900E, 0000N 00000E
ICE EDGE NOT FOR NAVIGATIONAL PURPOSES

[Kelkara]

Sounds like the symbol for "Bergy Water": https://cryo.met.no/en/understanding-ice-charts

[Phil_B]

Thank you for the quick replies, I have passed the information on, and I am sure they will be extra vigilant. Cheers Phil

[Lodesman]

Don't suppose you can post an image?

Sound like standard weather chart symbols. Dashed lines could be a trough, some forms of cloud, or fog. By ice crystal, if you mean asterisk over cone, it's snow showers.

You can have a look at the symbols here:

https://static1.squarespace.com/stat...Chart+(35).pdf

[Phil_B]

Thanks for the link to the symbols.
I'm not onboard and their only current means of comms is through the Garmin messaging service, so a SMS type message limited to 160 characters, hence no image to share. They have just passed 76 degress latitude so sea ice is definitely a possibility but so is hail, snow, rime etc so I think they would just like a bit of certainty as to what they are looking out for. I have checked the current Norwegian Ice Service bulletin and there is ice at and around their latitude but significantly further west. I have also messaged the PredictWind support for confirmation but as they operate from New Zealand at local times, won't get a response for a couple of hours at least.