AERODROME WARNING
KURSUS PEMANTAPAN BAGI PENGGUNA MDPS MESSIR-NEO & LDAS | PMPN
CONTENT
1 AD Warning: Overview
2 Standard Operating Procedure
3 MDPS: MESSIR-NEO Module
CONTENT
1 AD Warning: Overview
2 Standard Operating Procedure
3 MDPS: MESSIR-NEO Module
AERODROME WARNING [1,2,3]
Concise info of met. conditions which could adversely affect aircraft on
the ground; including parked aircraft, aerodrome facilities and services
Responsibility Validity Period Warning Cancellation
Aerodrome Usually not more When met. conditions
meteorological than 24 hours [2] are no longer occurring
office (AMO) (1 to 6hrs) [3] or expected to occur
[1] ICAO Doc 8896: Manual of Aeronautical Meteorological Practice
[2] ICAO Annex 3: Meteorological Service for International Air Navigation
[3] Peraturan Tetap Operasi: Penyediaan dan Penyebaran Amaran Cuaca Buruk untuk Operasi Penerbangan
RADIUS OF COVERAGE [3]
OBSERVED FCST
[3] Peraturan Tetap Operasi: Penyediaan dan Penyebaran
Amaran Cuaca Buruk untuk Operasi Penerbangan
SIGNIFICANT WEATHER PHENOMENA [1,2,3]
Thunderstorm Snow
Hail Freezing precipitation
Strong surface wind & gust Frost, hoar frost or rime
Heavy rain (agreed locally) Sand storm, dust storm, rising
Tropical cyclone sand or dust
Volcanic ash Squall
Tsunami Toxic chemicals
[1] ICAO Doc 8896: Manual of Aeronautical Meteorological Practice
[2] ICAO Annex 3: Meteorological Service for International Air Navigation
[3] Peraturan Tetap Operasi: Penyediaan dan Penyebaran Amaran Cuaca Buruk untuk Operasi Penerbangan
CONTENT
1 AD Warning: Overview
2 Standard Operating Procedure
3 MDPS: MESSIR-NEO Module
CATEGORY OF AD WARNING
FORECAST OBSERVED
Issued at least 10 mins before
Validity period starts
Issued due to occurrence of
OR significant weather phenomena
Significant weather within 10km radius of
phenomena is expected aerodrome
approaching within 10km
radius of aerodrome
CRITERIA OF ISSUANCE: THUNDERSTORM & RAIN INTENSITY
Monitoring is based on METAR/SPECI, WRVR/AWOS, radar image & LDAS
INTENSITY PHENOMENA SURFACE VISIBILITY
TSRA <5km OR
MOD
RA rain int. : 0.5-2.0mm/hr
TSRA <3km OR
MOD TO HYV
RA rain int. > 4mm/hr
TS -
HVY TSRA <3km OR
RA rain int. > 4mm/hr
CRITERIA OF ISSUANCE: OTHER PHENOMENA
PHENOMENA CRITERIA
Hail (GR) Reflectivity range: 60 – 65 dBZ (205 to 405 mm/hr)
Strong Surface Wind &
Sfc. windspeed > 15KT (with or w/o gust)
Gust (SFC WSPD)
i. Official TC advisory from TCAC/POCGN
Tropical Cyclone
ii. HVY/MOD RA with strong sfc. wind > 34KT, occur or
(TC)
expected to occur at aerodrome
i. Official VA from VAAC and VA SIGMET
Volcanic Ash (VA)
ii. Visibility < 5km
Official tsunami warning has been issued by POCGN
Tsunami (TSUNAMI)
and affects airport operation
TEMPLATE FOR AD WARNING
[M] WMO header [M] Type of message & seq. no
[M] Location indicator [M] Validity period
WOMS31 WMKK 041220
WMKK AD WRNG 1 VALID 041230/041430
HVY TS SFC WSPD 15KT MAX 25 FCST NC=
[M] Details of phenomena [M] Observed/Forecast [C] Changes in intensity
EXAMPLES OF AD WARNING
THUNDERSTORMS VOLCANIC ASH
WOMS31 WMKK 041220 WOMS31 WMKK 041220
WMKK AD WRNG 1 VALID 041230/041430 WMKB AD WRNG 1 VALID 041800/050000
HVY TS SFC WSPD 15KT MAX 25 FCST INTSF= VA DEPO FCST NC =
THUNDERSTORMS
SURFACE STRONG WIND
WOMS31 WMKK 041230
WOMS31 WMKK 041220
WMKK AD WRNG 2 VALID 041235/021435
WMKP AD WRNG 3 VALID 041225/041425
HVY TSRA VIS LESS THAN 3000M SFC WSPD 15KT
SFC WSPD 20KT MAX 30 OBS WKN=
MAX 25 OBS AT 1225Z NC=
TSUNAMI HAIL
WOMS31 WMKK 200500 WOMS31 WMKK 100730
WBGJ AD WRNG 1 VALID 200600/201000 WMKK AD WRNG 5 VALID 100750/100850
TSUNAMI FCST INTSF= GR SFC WSPD 12KT MAX 25 FCST INTSF=
CONTENT
1 AD Warning: Overview
2 Standard Operating Procedure
3 MDPS: MESSIR-NEO Module
LET’S GET STARTED!
Go to: mdps.met.gov.my
Log in using ID & password assigned
ASSIGNED ID & PASSWORD
No Name Username/Password
1 DR. NORHADIZAH BINTI MOHD KHALID met_training_1
2 PN. SITI AIZZA BINTI SARMANI met_training_2
3 EN. MOHAMED AZAN BIN ABDUL RAZAK met_training_3
4 PN. SURINA BINTI OTHMAN met_training_4
5 EN. FAZMEE BIN SHUKRI met_training_5
6 EN. MAZRIN BIN MARING met_training_6
7 PN. NURUL SALWA BINTI ABDUL GHANI met_training_7
8 PN. NURAINIE BINTI ROSLAN met_training_8
9 PN. NADIRA BINTI JANIUS met_training_9
10 PN. NUR SYAFEENATUL ALFDA BT. HJ. ROSLI met_training_10
11 EN. NARENSH NAIR A/L NARANDRAN NAIR met_training_11
12 EN. MUHAMMAD SYAFIQ BIN MOHD SATA met_training_12
13 EN. MOHAMAD ASYRAF BIN ZULKIFLI met_training_13
14 PN. NURFARHA BINTI ABDUL HALIM met_training_14
Dashboard
Menu
Forms
Aerodrome Warnings
Aerodrome
warnings tab
Forms
Create a Cancel
new existing
RFO Form
Version
Message Error Message Message Archive
Preview
and Editing
Header,
Aerodrome,
Identification,
Validity
Phenomena
Forecast or
Observe
Validity Period
Message Header
(start and end)
Aerodrome
Click to adjust time in Total duration of
Identification
5 minutes step for validity period
valid start and valid
end
Header time : Will be current time. Unless in manual edit mode or amend & correct
Will be additional 10 minutes for forecast, same time for observed from
Valid start :
header time. User can still edit to add more time, but not less
Will be additional 1 hour period from valid start. User can still edit to
Valid end :
change validity period less or more than 1 hour
: The number of aerodrome warnings issued for the aerodrome since 0001
Identification
UTC on the day concerned
Users can choose one or more
combination of phenomenon
• TS - thunderstorm
Select • RA - rain
thunderstorm • TSRA - thunderstorm
Select severity
and rain
• HVY - heavy
• MOD TO HVY - moderate
to heavy • 1000M
• MOD - moderate Select visibility • 2000M
• FBL - light • 3000M
• 4000M
• 5000M
Select to
forecast
Select to
observe
Users can tick AT to Changes in
observe at specific time intensity
Users can select changes in
intensity (C):
• NC - no change
• INTSF - intensify
• WKN - weakening
Message Preview and Editing
Example:
WOMS31 WMKI 100731 : Header time
WMKI : Airport station code
AD WRNG 1 : Aerodrome warning identification
VALID 111733/112010 : Valid start/end
HVY TS : Phenomena
FSCT : Forecast
NC = : Changes in intensity
Download text file Send to the message
Click to edit manually in Message
Preview and Editing box
• Simple error message will be pop out if incorrect data is entered
• Warning will be sent by clicking ‘Yes’
Illogical valid start and phenomena
Cancel manual edit
Revert to the correct valid start and phenomena
based on form once user cancel manual edit
Click to cancel
manually
• Manual cancellation form
• A cancel aerodrome warning ID and
cancel valid end has to be exact
Message archived in a last 24 hours
Expired aerodrome warning time
• To renew aerodrome warning that have expired
• Only for expired aerodrome warning within past 24 hours
Renew editing form • Valid start and valid end will be adjusted according to standard.
User can still edit
• Phenomena of selected warning will be copied. User can still edit
• Function: to duplicate aerodrome warning to other aerodrome
• Only for active aerodrome warning
• Valid start and valid end will be copied, however will be adjusted if
not comply to standard. User can still edit
• Phenomena of selected warning will be copied. User can still edit
Duplicate editing form Active aerodrome warning remaining time
• Function: to extend active aerodrome warning
• Valid end of selected warning will be copied as new
warning valid start. However, it will be adjusted if not
comply to standard. User can still edit
• Phenomena of selected warning will be copied. User
can still edit
Extend editing form
Cancellation form
• Function: to cancel active aerodrome warning
• Expired and cancelled aerodrome warning will not
display this button
• Form for cancellation will be loaded
• Selected warning id and valid end will be copied
ERROR MESSAGE DESCRIPTION
Error Message Description
AD WRNG ID MAY BE INCORRECT, n IS EXPECTED Aerodrome warnings ID is incorrect
VALID BEGIN TIME IS LATER THAN VALID END TIME VALID BEGIN time later than VALID END time
VALIDITY TIME IS MORE THAN 6 HOURS. PLEASE
Valid duration is more than 6 hours
RECONFIRM
NO PHENOMENON IS SELECTED No phenomenon selected in form
QUALITY CHECK DISABLED. SEMI AUTOMATIC
FORM IS DISABLED. PLEASE CHECK PRODUCT Edit mode enabled
BEFORE SUBMIT
ABT VIEWER
Aerodrome Warnings
Remaining
Time
https://pigeonhole.at/
WARNING
EXERCISE 1
Issued an AD
Warning of any
weather phenomena
that you like
