TWEB Decode help

[drhunt]

TRANSCRIBED WEATHER BROADCAST *

FRUS45 KMSO 070700
TWB336
336 TWEB 070820 KFCA-KMSO-KSMN. ALL HGTS MSL EXC CIGS. KFCA-50N
KMSO 6SM -SHRA CIGS OVC040. 50N KMSO-KSMN P6SM BKN090-120.
I guess I'm a bit rusty on decoding these and can't remember what the "50N" means on a TWEB...anybody?Couldn't find it in the TAF/METAR definitions.

 

[Don Jones]

TRANSCRIBED WEATHER BROADCAST *

FRUS45 KMSO 070700
TWB336
336 TWEB 070820 KFCA-KMSO-KSMN. ALL HGTS MSL EXC CIGS. KFCA-50N
KMSO 6SM -SHRA CIGS OVC040. 50N KMSO-KSMN P6SM BKN090-120.
I guess I'm a bit rusty on decoding these and can't remember what the "50N" means on a TWEB...anybody?Couldn't find it in the TAF/METAR definitions.

Thats 50 miles north of a line from KMSO-KSMN
Don

 

[drhunt]

Thanks, that was my guess but I couldn't find a reference. I see now that the first part stops 50 N of KMSO and the balance of the forecast picks up from that point.

 

[Don Jones]

Thanks, that was my guess but I couldn't find a reference. I see now that the first part stops 50 N of KMSO and the balance of the forecast picks up from that point.

Here is a little more info I found that talks about twebs being a 50 mile wide route. Here is the link:
http://www.crh.noaa.gov/gjt/tweb.htm

Don