SIGMET downloads

[simonijs]

Hi Hardy,

Recently I am seeing large SIGMET areas depicted on the Instructor/Situation/Position map. After deletion of all other SIGMET areas, three remain visible as seen on this screenshot:



The SIGMET messages that go with these areas are:

Code Select Expand

DOWNLOADED 12:37:38 - 02 SEP 2023 UTC
-------------------------------------

WSNT01 CWAO 021225
CZQX SIGMET C3 VALID 021225/021625 CWUL-
CZQX GANDER OCEANIC FIR/CTA SEV TURB FCST WI 60NM WID LINE BTN N5000 W05030 -
N5300 W04500 FL240/340 MOV NE 10KT NC=

WSCN03 CWAO 021227
CZWG SIGMET D2 VALID 021225/021625 CWEG-
CZWG WINNIPEG FIR FRQ TS OBS WI 30NM WID LINE BTN N6133 W08944 - N5907 W09314
TOP FL330 MOV E 25KT NC=

WSMX31 MMMX 021151
MMEX SIGMET D3 VALID 021138/021538 MMMX-
MMFR MEXICO FIR OCNL TS OBS AT 1138Z
WI 195NM WID LINE N1724 W09530 - N2124 W09121 - N2421 W09116 TOP FL500
MOV STNRY NC.

WSSD20 OEJD 020935
OEJD SIGMET 02 VALID 020935/021300 OEJD-
OEJD JEDDAH FIR EMBD TS OBS S OF LINE N2431 E03922 - N2431 E04157 -  N1726 E04512
TOP ABV FL390 MOV W INTSF=

For the very large area - covering North and South America - it turns out that removing either the first or the second SIGMET message, removes that area. The combination of the two produces the area, and a turbulent ride within it.

The area in Central America is generated by the third SIGMET message.

The first three messages all relate to a line with a specified width, could this somehow cause the drawing of large areas? The given co-ordinates certainly do not match with the depicted areas...

The area east of Africa is remarkable as well: it stretches well beyond the Jeddah FIR.

Is this something that you can look into, or is this an inevitable consequence of downloading SIGMETS?

Kind regards,
Simon

[Hardy Heinlin]

Hi Simon,

I guess the problem lies in the WSMX31 block which doesn't end with a "=" sign. So the PSX text scanner thinks the next block belongs to the current block.

It's been a few years, but I think a block should always end with a "=" sign and I don't think I can use any other textual hint for the end without risking side effects that would be even worse.



Regards,

|-|ardy

[Bluestar]

I use the Sigmets generated by SimBrief for my route.  The Sigmets are located in the Briefing Preview along with the winds aloft.  An example that I used today -

SIGMETs:
SKED  BOGOTA FIR/UIR
  WS  SIGMET 3 VALID 021025/021330 SKBO- SKED BOGOTA FIR
             EMBD TS OBS AT 1004Z WI N0908 W07726 - N0758 W07721 -
             N0608 W07903 - N0519 W07834 - N0447 W07557 - N0637
             W07607 - N0850 W07606 - N0908 W07726 TOP FL500 MOV WSW
             7KT NC=
  WS  SIGMET B1 VALID 021040/021340 SKBO- SKED BOGOTA FIR
             EMBD TS OBS AT 1017Z WI N0747 W07423 - N0611 W07415 -
             N0619 W07208 - N0726 W07228 - N0810 W07222 - N0841
             W07238 - N0747 W07423 TOP FL500 MOV WNW 9KT INTSF=