Ice Crystals/ Shallow Fog.

[brown_eyes]

Could somebody please tell me under what weather conditions ice crystals and shallow fog are reported in a METAR.

Thanks.

[bsal]

Check this link for shallow fog http://amsglossary.allenpress.com/gl...d=shallow-fog1
and this one for ice-crystals http://amsglossary.allenpress.com/gl...browse?s=i&p=3

[brown_eyes]

bsal

Thanks for those websites. Shallow fog is well defined, still very unsure under what conditions would ice crystals be reported in a METAR. Are there any Met observers out there who could expail.


Thanks.

[pigboat]

First off, it has to be kinda chilly.

METAR CYEK 030300Z AUTO 34026G36KT 1/8SM -SN VV001 M32/M37 A2985 RMK
SLP109=TAF
CYEK 022338Z 030012 35028G38KT 1/8SM IC +BLSN VV002
RMK FCST BASED ON AUTO OBS. NXT FCST BY 06Z=

BAKER LAKE/NU
METAR CYBK 030200Z 34020KT 3SM IC BLSN SKC M35/M40 A3007 RMK BLSN1
SLP185=

SPECI CYBK 030245Z 33017KT 4SM IC DRSN SKC REBLSN=

METAR CYBK 030300Z 33021KT 4SM IC DRSN VCBLSN SKC M36/M41 A3005 RMK
SLP178=

METAR CYBK 030400Z 32019KT 5SM IC DRSN FEW030 M36/M41 A3004 RMK SC0
SLP176=



TAF AMD CYBK 030409Z 030412 32020G30KT 5SM IC BLSN FEW030 TEMPO 0412
11/2SM IC BLSN
RMK NXT FCST BY 06Z=