Weather depiction chart
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Just like the surface analysis chart, it is generated from surface station
observations. Depicts areas of VFR (at least 3000' ceiling and 5SM visibility),
Marginal VFR (1000'- 3000' ceiling and/or 3 - 5SM visibility, shown as
contoured areas) and IFR (less than 1000' ceiling and/or 3SM visibility,
shown as shaded areas). It also shows basic METAR information at selected
stations (visibility, sky coverage, ceilings and obstructions to visibility).
Issued every 3 hours, starting at 01:00Z
Life cycle of a thunderstorm
(Stages)
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, Cumulus stage(3-5 mile height) - lifting action of the air begins. Growth rate
may exceed 3000 fpm.
Mature stage(5-10 miles height) - begins when precipitation has become to
fall from the cloud base. Updraft at this stage may exceed 6000 fpm.
Downdrafts may exceed 2500 fpm. All thunderstorm hazards are at their
greatest intensity at the mature stage.
Dissipating stage(5-7 miles height) - characterized by strong downdrafts
and the cell is dying rapidly.
Low level significant weather chart
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Forecasts significant weather conditions for a 12 and 24 hour period from
the surface to 400 mb level (24,000 ft). Depicts weather categories (IFR,
MVFR and VFR), turbulence and freezing levels
Issued 4 times a day
High-level significant weather charts
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Depicts forecasts of significant weather phenomena for FL250 to FL630.
Shows: coverage bases and tops of thunderstorms and CB clouds,
moderate and severe turbulence, jet streams, tropopause heights, tropical
cyclones, severe squall lines, volcanic eruption sites, widespread sand and
dust storms.
Issued 4 times a day.
,Lost communications procedure
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TRAVL
Transponder - 7600
Route: AVEF
-Assigned route
-Vectored(fly to the fix/route/airway last given)
-Expected route by ATC
-Filed route
Altitude: MEA
-Minimum altitude depicted on the charts
-Expected - altitude that ATC has advised as expected
-Assigned - Alt/FL assigned by ATC
VFR - continue if able
Leaving clearance limit
Convert climb gradient from ft/NM to fpm
Give this one a try later!
ft/nm requirement X NM per Minute
Ex.: DP requires 300 ft/NM climb.
Your ground speed is 120KT, which is 2NM per minute (120 KT / 60 min = 2
NM per min).
300 x 2 = 600 fpm
How far out to start a descent?
(3° glide)
, Give this one a try later!
Altitude to lose / 300
Example: 6000' to lose, start descent 20 NM out.
(6000/300 = 20 NM)
Max holding speeds
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Up to 6k MSL - 200kias
6001 to 14k MSL - 230kias
Above 14k MSL - 265kias
May be restricted to 175 kias on some instrument app procedures
Obstacle Departure Procedure
(ODP)
Give this one a try later!
Only provides obstruction clearance.
May be flown without an ATC clearance unless a SID or other instructions
are assigned. (e.g. radar vectors)
Graphic ODP denote "Obstacle" in the chart title.
All new RNAV ODPs are available in graphical form.
Found in the front of NACO chart booklets, arranged alphabetically by city
name.
Give this one a try later!
Just like the surface analysis chart, it is generated from surface station
observations. Depicts areas of VFR (at least 3000' ceiling and 5SM visibility),
Marginal VFR (1000'- 3000' ceiling and/or 3 - 5SM visibility, shown as
contoured areas) and IFR (less than 1000' ceiling and/or 3SM visibility,
shown as shaded areas). It also shows basic METAR information at selected
stations (visibility, sky coverage, ceilings and obstructions to visibility).
Issued every 3 hours, starting at 01:00Z
Life cycle of a thunderstorm
(Stages)
Give this one a try later!
, Cumulus stage(3-5 mile height) - lifting action of the air begins. Growth rate
may exceed 3000 fpm.
Mature stage(5-10 miles height) - begins when precipitation has become to
fall from the cloud base. Updraft at this stage may exceed 6000 fpm.
Downdrafts may exceed 2500 fpm. All thunderstorm hazards are at their
greatest intensity at the mature stage.
Dissipating stage(5-7 miles height) - characterized by strong downdrafts
and the cell is dying rapidly.
Low level significant weather chart
Give this one a try later!
Forecasts significant weather conditions for a 12 and 24 hour period from
the surface to 400 mb level (24,000 ft). Depicts weather categories (IFR,
MVFR and VFR), turbulence and freezing levels
Issued 4 times a day
High-level significant weather charts
Give this one a try later!
Depicts forecasts of significant weather phenomena for FL250 to FL630.
Shows: coverage bases and tops of thunderstorms and CB clouds,
moderate and severe turbulence, jet streams, tropopause heights, tropical
cyclones, severe squall lines, volcanic eruption sites, widespread sand and
dust storms.
Issued 4 times a day.
,Lost communications procedure
Give this one a try later!
TRAVL
Transponder - 7600
Route: AVEF
-Assigned route
-Vectored(fly to the fix/route/airway last given)
-Expected route by ATC
-Filed route
Altitude: MEA
-Minimum altitude depicted on the charts
-Expected - altitude that ATC has advised as expected
-Assigned - Alt/FL assigned by ATC
VFR - continue if able
Leaving clearance limit
Convert climb gradient from ft/NM to fpm
Give this one a try later!
ft/nm requirement X NM per Minute
Ex.: DP requires 300 ft/NM climb.
Your ground speed is 120KT, which is 2NM per minute (120 KT / 60 min = 2
NM per min).
300 x 2 = 600 fpm
How far out to start a descent?
(3° glide)
, Give this one a try later!
Altitude to lose / 300
Example: 6000' to lose, start descent 20 NM out.
(6000/300 = 20 NM)
Max holding speeds
Give this one a try later!
Up to 6k MSL - 200kias
6001 to 14k MSL - 230kias
Above 14k MSL - 265kias
May be restricted to 175 kias on some instrument app procedures
Obstacle Departure Procedure
(ODP)
Give this one a try later!
Only provides obstruction clearance.
May be flown without an ATC clearance unless a SID or other instructions
are assigned. (e.g. radar vectors)
Graphic ODP denote "Obstacle" in the chart title.
All new RNAV ODPs are available in graphical form.
Found in the front of NACO chart booklets, arranged alphabetically by city
name.
