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

10 minutes

No

Convective SIGMET

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

Yes

D-ATIS
Echo Top

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

No
No

METAR/SPECI

15 minutes
2.5 minutes
10 minutes
10 minutes
10 minutes

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

1 The Update Interval is the rate at which the product data is available from the source.
2 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.

4-5-26

Surveillance Systems