Why are we having to deal with late satellite imagery?

This is more of a general question, but nowcasting this afternoon's situation it's 2010Z right now and none of the sites, SPC/meso, CoD, NASA/GSFC, has any image later than 1915Z.

What's going on here? And shouldn't we be seeing rapid-scan sector data from somewhere every 5 minutes? There's something absurd about having to look at 55-minute old satellite data on a moderate risk day.

Tim
 
OK, this isn't just another 20-minute outage.. the feed has been down for 75 minutes and GOES-WEST is also an hour behind. There apparently is a major communications problem somewhere... I'm going to start combing the NWS administrative messages.

Tim
 
Tim, I've also had trouble getting imagery including through WeatherTap and multiple other sources. I am suprised that many sources are all down.

Bill Hark
 
The fact that more than a few sites have old satellite images tells me that the satellite transmission is down or that the satellite itself isn't working correctly. I assume that every single source is old, since there wouldn't really be a reason why a dozen sites would have an old image while a couple don't. In other words, it's not like individual sites are down, but the main source (we all get the data from the same satellite -- GOES 12/East) seems to be having problems... I haven't found any 'announcements' or statements regarding problems with the satellite, however... :-/
 
The fact that more than a few sites have old satellite images tells me that the satellite transmission is down or that the satellite itself isn't working correctly. I assume that every single source is old, since there wouldn't really be a reason why a dozen sites would have an old image while a couple don't.... I haven't found any 'announcements' or statements regarding problems with GOES12 (Goes East), however... :-/
[/b]


Looks like the system is back online....just got a updated one from WeatherTap for 21:13z

EDIT: Well maybe not...I ran the animation for the satillite loop and the last update was 21:13 GMT the one before it was 19:29 GMT.
 
OK, this isn't just another 20-minute outage.. the feed has been down for 75 minutes and GOES-WEST is also an hour behind. There apparently is a major communications problem somewhere... I'm going to start combing the NWS administrative messages.

Tim
[/b]


Hope that when your current nowcast situation is less pressing, you'll report on what you found to be the cause.
 
GOES-East was down for a scheduled manuever:

ALSO THE GOES EAST MANEUVER IS STILL SCHEDULED TO BEGIN
AT 1945Z THROUGH 2114Z...NO GOES EAST IMAGING OR SOUNDINGS
DURING THIS TIME FRAME..BUT THEIR WILL BE GOES 10 FULL DISK
IMAGING FROM 1930Z THROUGH 2129Z TO COMPENSATE FOR THE LACK
OF GOES EAST IMAGING...

GOES-West data was interrupted by problems at the receive site:

182155Z...THE GOES-10/WEST IMAGERY. THE GOES-WEST SATELLITE
IMAGERY WAS UNAVAILABLE IN AWIPS AFTER 1930Z AND IT
LOOKS LIKE THIS DATA FLOW HAS JUST BEEN RESTORED. CHECKED
WITH NESDIS AND THEY REPORTED A PROBLEM HAD OCCURRED WITH
THE GINI AND HAS SINCE BEEN REPAIRED.
 
Supplementing what RDale posted...
ADMNFD
SPECIAL NCEP DISCUSSION
CENTRAL OPERATIONS/NCEP/NWS/WASHINGTON DC
2155 UTC TUE APR 18 2006

182155Z...THE GOES-10/WEST IMAGERY. THE GOES-WEST SATELLITE
IMAGERY WAS UNAVAILABLE IN AWIPS AFTER 1930Z AND IT
LOOKS LIKE THIS DATA FLOW HAS JUST BEEN RESTORED. CHECKED
WITH NESDIS AND THEY REPORTED A PROBLEM HAD OCCURRED WITH
THE GINI AND HAS SINCE BEEN REPAIRED.

ALSO...THE GOES-12 IS RECOVERING FROM ITS SCHEDULED MANEUVER.
SO ALL GOES SATELLITE IMAGERY SHOULD SOON BE BACK TO NORMAL.[/b]
--> http://www.srh.noaa.gov/productview.php?pil=ADMNFD&max=51
 
Yeah, I got this bulletin at about 8AM ET...

Topic: REMINDER GOES-12 East/West Maneuver April 18, 2006
Message Issued: April 17, 2006, 1445 UTC
Satellites Impacted: GOES-12 and GOES-10
Products Impacted: GOES-12 Imager and Sounder Data and GOES-10 Imager Data
Date/Time of Initial Impact: April 18, 2006 1436 UTC

--------------------------
Details:

A GOES-12 East-West Station Keeping maneuver will be performed on
Tuesday, April 18, 2006 at 2055 UTC. For National Weather Service
operations: The backup date for this maneuver is Thursday, April 20,
2006. If the NWS regions have any operational concerns, please contact
the NCEP SDM (301-763-8298) at least 6.5 hours prior to the maneuver time.

On April 18, the following exclusive schedule will be employed to
support maneuver operations: (*PLEASE NOTE the scheduled GOES-10 Full
Disk scan period to support the primary GOES-12 outage during the
maneuver.*)

GOES-12 Maneuver Schedule starts at 1436 UTC on April 18, 2006.
(Southern Hemisphere Scan at 1439 UTC is canceled)

>From 1445 UTC through 1844 UTC -- GOES-12 Routine Imaging and Soundings.

>From 1845 UTC through 1944 UTC -- GOES-12 Full Disk Imaging and Routine
Soundings.

*From 1945 UTC through 2114 UTC -- No GOES-12 Imaging or Soundings*

**From 1930 UTC through 2129 UTC -- GOES-10 Full Disk Imaging**

>From 18/2115 UTC through 19/0408 UTC -- GOES-12 Post Maneuver Recovery
Including:
* Full Disk Images (19 minute scan) at XX15 and XX45
* CONUS Soundings at XX46

0409 UTC April 19 -- GOES-12 Routine Scan Operations Resume

Expect GOES-12 imager and sounder gridding offsets for up to 6 hours
following the maneuver.[/b]

I'm surprised they still went through with it today instead of switching to the backup date, with a MDT risk in effect.
 
"I'm surprised they still went through with it today instead of switching to the backup date, with a MDT risk in effect."

That was up to a NWS office, and apparently none thought the satellite imagery was important during the scheduled timeframe today (needed 6+ hours notice.)

No satellite stays in the exact same spot, so periodically they need to tweak it back into perfect position.
 
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