Readers ask: 41) When Are Aviation Watch Notification Messages (saw) Issued?

Are AIRMETs scheduled?

AIRMETs are routinely issued for 6 hour periods beginning at 0245 UTC. AIRMETS are also amended as necessary due to changing weather conditions or issuance cancellation of a SIGMET.

How can a pilot receive updated weather information inflight?

A pilot can call back to an air traffic controller to give them details of the actual weather they have encountered so the weather reports can be updated to give a more accurate report. One of the most common PIREPS that I personally report when flying out of an airport is the lowest cloud ceiling.

When were weather depictions discontinued?

The new cloud and surface forecasts replace the GFS MOS ceiling and visibility graphical forecast products, which NOAA discontinued in mid-December 2019.

What are the three types of aviation weather information?

There are several methods by which upper air weather phenomena can be observed: radiosonde observations, pilot weather reports (PIREPs), Aircraft Meteorological Data Relay (AMDAR) and the Meteorological Data Collection and Reporting System (MDCRS).

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What is the maximum forecast period for AIRMETs?

The maximum forecast period is 4 hours for SIGMETs and 6 hours for AIRMETs. The G- AIRMET is issued over the CONUS every 6 hours, valid at 3-hour increments through 12 hours with optional forecasts possible during the first 6 hours.

What is the valid time for all graphical AIRMETs?

G- AIRMETs are issued at discrete times 3 hours apart for a period of up to 12 hours into the future (00, 03, 06, 09, and 12 hours). They are issued at 03:00, 09:00, 15:00 and 21:00 UTC (with updates issued as necessary). AIRMET are issued by the AWC for the lower 48 states and adjacent coastal waters.

What weather app pilots use?

For Android users who are searching for a reliable and easy-to- use aviation weather apps, Avia Weather is a good option. This app decodes and presents the current METARs of over 9,500 airports worldwide. With a simple color-coding system, pilots can receive quick classifications of VFR or IFR conditions.

What should pilots state when telephoning a weather briefing facility for preflight weather information?

What should pilots state initially when telephoning a weather briefing facility for preflight weather information? The address of the pilot in command.

How do I get an online weather briefing?

N O A A N A T I O N A L W E A T H E R S E R V I C E Pilots can receive a complete preflight briefing from a Flight Service Station (1-800-WXBRIEF) or online at

What replaced the weather depiction chart?

Effective September 1, 2015, the four-panel Low Level SFC-240 chart was replaced with a two-panel chart. The new two-panel chart will be the same as the top two panels in the former four-panel chart, depicting the freezing level and areas of IFR, MVFR, and moderate or greater turbulence.

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What is mos on ForeFlight?

But you will find MOS in the latest release of ForeFlight Mobile. MOS stands for Model Output Statistics. As the name suggests, MOS is derived from the output of weather prediction models developed and run by research meteorologists at NOAA.

How often are weather depictions updated?

The Surface Analysis Chart and the Weather Depiction Chart both show weather conditions at the time the chart was issued. They are issued every three hours.

What does Metar stand for?

METAR is the international standard code format for hourly surface weather observations which is analogous to the SA coding currently used in the US. The acronym roughly translates from French as Aviation Routine Weather Report.

How often are aviation area forecasts issued?

The area forecast together with the AIRMET Sierra bulletin are used to determine forecast enroute weather and to interpolate conditions at airports which do not have a terminal forecast (TAF) issued. FAs are issued 3 times a day from Kansas City for the Gulf of Mexico (FAGX) and Caribbean (FACA).

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