TBL 4-5-3

FIS-B Over UAT Product Update and Transmission Intervals

Product

Update Interval1

Transmission
Interval (95%)2
5 minutes

Basic
Product
Yes

AIRMET

As Available

AWW/WW

As Available, then at 15 minute 5 minutes
intervals for 1 hour

No

Ceiling

As Available

No

Convective SIGMET

As Available, then at 15 minute 5 minutes
intervals for 1 hour

Yes

D-ATIS
Echo Top

As Available
5 minutes

1 minute
5 minutes

No
No

METAR/SPECI

1 minute (where available), As 5 minutes
Available otherwise

Yes

MRMS NEXRAD (CONUS)
MRMS NEXRAD (Regional)
NOTAMs-D/FDC
NOTAMs-TFR
PIREP

2 minutes
2 minutes
As Available
As Available
As Available

Yes
Yes
Yes
Yes
Yes

SIGMET

As Available, then at 15 minute 5 minutes
intervals for 1 hour

Yes

SUA Status
TAF/AMEND
Temperature Aloft
TWIP
Winds aloft
Lightning strikes 3
Turbulence 3

As Available
6 Hours (15 minutes)
12 Hours (15 minutes)
As Available
12 Hours (15 minutes)
5 minutes
1 minute

10 minutes
10 minutes
10 minutes
1 minute

Yes
Yes
Yes
No

10 minutes
5 minutes
15 minutes

Yes
Yes
Yes

Icing, Forecast Potential (FIP) 3
Cloud tops 3

60 minutes
30 minutes

15 minutes
15 minutes

Yes
Yes

1 Minute AWOS 3
Graphical-AIRMET 3
Center Weather Advisory (CWA) 3
Temporary Restricted Areas (TRA)

1 minute
As Available
As Available

10 minutes
5 minutes
10 minutes

No
Yes
Yes

As Available

10 minutes

Yes

Temporary Military Operations Areas
As Available
(TMOA)

10 minutes

Yes

10 minutes

15 minutes
2.5 minutes
10 minutes
10 minutes
10 minutes

The Update Interval is the rate at which the product data is available from the source.
The Transmission Interval is the amount of time within which a new or updated product transmission must be completed
(95%) and the rate or repetition interval at which the product is rebroadcast (95%).
3 The transmission and update intervals for the expanded set of basic meteorological products may be adjusted based on FAA
and vendor agreement on the final product formats and performance requirements.

Surveillance Systems

4-5-21