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63

TCCS 25:2019/CHK

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TROPICAL CYCLONE ADVISORY

DTC 20050922112007 PALMA!

. TULIET7E NR. 22 PSN; N2150 55,558 S00 MOV: W I 2KT C 945 .1PA MAX MND 1 20ICY RME NA NXT ACIASORY. 200.50922i 1 6002

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211130/ AX WIND 13581

TCCS 25:2019/CHK

Tv yin bao nhiOt OA clang d6 hoa

Miu A9

F1150/300

Tv yin 1/4 tro byi nui lira dang d6 hoa

23'0100Z

1401f 1501T 1E41 1701 '130

Miu A10

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65

YUCC 5IGMET 83

VALID 152320,160300 YUDO

OBS 2100Z

BDRY of FRQ CB

25

I .

OZ . ^

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14

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17-

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----- 14- ,,

TCCS 25:2019/CHK

SIGMET v6• bao nhiOt clad clang do hoa Miu All

07° 108' 109" 110" 111 112 1 3 114 '15 116 1'7 118 119 120

107° 108' 109' 110' 111' 112' 113' 114 ' 15 116 117 118' 119' 120'

66

!C'

YV

LZ A %,AIE01 1t

ALD0406141200Mit VA CID OBS SK/gt120 MOV NEM a

TCCS 25:2019/CHK

SIGMET y4 may tro nui lira clang d6 hoa

Mau Al2

430"

+SS

67

VA

LID

022010; 0

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U ) 1

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TCCS 25:2019/CHK

SIGMET ye hien tu'o'ng thol bet nguy hiem khong phai bao Mau A13 nhiet do'i hay tro bui ntii Iu'a clang do hoa

68

TCCS 25:2019/CHK

PHU LI)C B: Bang you cau do chinh xac do dac vaquan trk cac y6u to khi tuvng

(Quy dinh)

Y6u to quan trAc Pham vi sai so cho phep

Gio b6 mat Huang: ± 10°

Toc cIO: ff 1 + 10 kt: ± 0.5 m/s (1 kt)

ff > 10 kt: ±10%

VIS 01 + 600 m: ± 50 m

600 +1 500 m: ± 10%

>1 500 m: ± 20%

RVR 01 + 400 m: ± 10 m

400 m + 800 m: ± 25 m

> 800 m: ±10%

Lucyng may ± 1/8

DO cao chan may 10 m (33 ft) + 100 m (330 ft): ± 10 m

> 100 m (330 ft): ± 10%

NhiOt clO/nhiOt dO di6m arang

± 1°C

Khi ap ± 0.5 hPa

69

TCCS 25:2019/CHK

PHU LUC C: (Quy dinh) Bang yeti cAu 'TO chinh xac bao cac y6u to khi tuvng, hi§n tuyng thoi trot san bay (TAF, TREND)

Y6u to thy bao Sai so du, bac chAp nh*an duvc

xac suat % dung (tren

tong so rnau/ban tin)

TAF

HuOng gi6 ± 20° 80%

Toc do giO ± 2.5 m/s (5 kt) 80%

Tam nhin ngang 0 m ÷ 800 m: ± 200 m

800 m ÷ 5 km: ± 30% 80%

May CB/ clang (TS) Dv bac xuat hian (hoac tan ra, khong con xay ra)

80%

Giang they vt:ra hoac manh

Du bac xua't hian (hoac tan, khang con xay ra) 80%

Luang may + 01 cap khi do cao may ducal 450 m (1500 ft)

+ Xuat hian hoac khang xu6t hian lOp may BKN hoac OVC vol do cao tiy 450 m — 3000 m

70%

Da cao chan may Tir 00 ÷ 300 m: ± 30 m

TO' 300 m ± 3000 m: ± 30% 70%

TREND

Huang gio ± 20° 90%

T6c do gio ± 2.5 m/s (5 kt) 90%

Tam nhin ngang 0 m ÷ 800 m: ± 200 m

800 m ÷ 5 km: ± 30% 90%

May CB/ dang (TS) Xuat hian (hoac tan ra, kh6ng con xay ra) 90%

Giang thiq vira hoac manh

Xuat hian (hoac tan, khang con xay ra) 90%

Luang may + 01 cap khi (la cao may cltthi 450 m (1500 ft)

+ Xuat hian hoac kh6ng xuAt hian lOp may BKN hoac OVC voii do cao tCr 450 m ÷ 3000 m

90%

Da cao chan may TCr 00 ÷ 300 m: ± 30 m

Ti' 300 m ÷ 3000 m: ± 30% 90%

70

k-

TCCS 25:2019/CHK

PHU LVC D: (Quy dinh) Cac tieu chi ap dung cho quan trAc va bao cao theyi ti6t san bay

GO be mat Tam nhln ngang (ViS)

RVR1

A B C

Thai bet hien

tai May tin b6-10' Nhiet

dO Kh ap

Thong

sung -5' (t quan trac)

Chi tiOt

Dao d6ng Wang gi63 Dao d6ng

ye van tee

Dao (Tang giCra cac hulang4 Xu Wang MAT C165

chi cu the theo Phu

vac 3. Tab lieu DOC 8896 ICAO

va Hwang

den ciia Cuc

HKVN

Wang ("N")c6

Luang may Loai may'

co tieu chi cu the

luon da kh ,

Cac thong s6 bao

cao

Cap nhat neu

bien d6 thay di Ian han gia trj quy djnh

Cac thong s6 bao g6m

2 60° va < 180° z 180°

Ian han 10 kt

hoac hem so vai t6c

150 gib

trung binh

biet; VIS nh6 nhat khac Net vai VIS thjnh hanh

Cac twang hap dac Tieu I k-SitM - ' '.7 s:.$2c)1

Lap may thap nhat

Lap tiep theo

bap cao han tier) theo

CB6 hoac TCU6

Loai may duvc bao

cao

Van t6c trung binh Quy tat c chung

VIS nho nhat < 1500 m hoac < % VIS thjnh hanh va < 5000m

VIS bien CI& qua nhanh, khong the sac djnh VIS thjnh hanh

< 100 m < 100 m

< 3 kt s 3 kt

MET REPORT/ SPECIAL

2/10 phut

2/10 ()hilt

2 phut 10 phut 1 phut Khong Al) dung

KhOng ap dung 1 phut

Lu6n lam

> 2/8 > 4/8 LuOn luOn

co

QNH QFEl°

Co Tat ca" 'Van toc nh6 nhat va Ian nhat

VIS (Jac &Yang CHC khi

KhOng ap dung9 7 VRB + 2 twang cix trj

71-ivang TB + 2 hmang cac trj

VRB (kheng co hirang ci.rc tri)

METAR/ 10 phut 10 phOt SPEC! hanh, 10 pi-16f 10 phut 10 phut

VIS thjnh VIS

VIS nho nhat 10 phut

Xu haang tang ("U"),

LuOn lam

> 2/8 > 4/8 LuOn

i

QNH Kh6ng thai bet nguy hien)

xay gi6 ra

ch:42

VRB (khong CO hvang cut trj)

hirang TB + 2 twang cut VI

VRB (khOng co hulang cu,c trj)

' Van t6c Ian nhat

VIS thjnh hanh

nhO nhat + twang Khong quan

trac duvc xu

Om CD")

KhOng CO xu hubng cu the, b6 qua bao xu haang.

Cac nguyen tec lien quan khac bp dung chung

Huang gio ducec ma Ilea bang 3 chili, s6, birdec 10 de, lam Von den bulfrc gan nhat

Tec de gib bao

theo boat 1 kt Gib nh6 hart 1kt

bao CALM

btrerc Ap dung VIS < 800 m : 50 m 800 m s VIS < 5 000 m 100 m 5 000 m s VIS < 10 km: 1 km VIS Z 10 km : bao cao

10 km hoac thubc trulang hap CAVOK

buds Ap dung

RVR < 400 m 25 m 400 m 5 RVR s 800 m : 50 m 800 m < RVR < 2 000 m 100

m13

bubo ap dung Base s 3 000 m (10 000 ft) . 30 m (100 ft)

Mirc tham chieu: DO cao san bay" hoac mktc nutfc bien trung binh nett la ceu tnic trail bien

Lam Iron

den d6 nguyen

ghn What (=0.5 lam tron len)

lam Iran xu6ng so hPa15 char' gen

nhat

KhOng ap

dung

GHI CHU: 1. Dirac tinh trong 10 phut gan nhat (ngoai trir: neu trong khoang thai gian 10 phut co sky gian down r5 rat, nghia la khi co Su, thay dOi d5t ng5t va duy trj trong khoang thai gian it nhat 2 phut cua RVR, trong do RVR dat va mat qua 175, 300, 550 hoac 800 m, thi chi dip lieu sau khi gian down duvc sit' dung de tinh). MOt sa do quy irac dan gian duqc siv dung de minh hoa cat phan cua khoang thai gian 10 phOt tarac trial diem quan tr5c (AB, BC va AC) cloi vai RVR nhu, trong bang.

2. Lap may bao gOm Ca CB va TCU co sung dO cao chap may may thi loci may duvc bao cao gOp chung la CB.

71

TCCS 25:20191CHK

3. Duvc tinh trong 10 phut gan nhat(ngoai neu trong khoang thai gian 10 phOt co su, gian down ro ret, nghia la xay ra su' thay dOi cl6t ng6t va duy tri trong khoang thai gian it nhat 2 phCit cua cac dac tinh gi6, trong dO hu'ang gi6 thay dOi tii 30 d6 (°) trey len vai toc dq giO truac hoac sau khi thay 10 kt (5 m/s), hoac tOc dO gi6 thay d6i 10 kt (5 m/s), thi chi du, lieu sau khi gian down duvc sir dung de tinh).

4. Neu quan Vac cluvc a nhieu huang thi sir dung huang quan trong nhat cho hoat d6ng khai thac.

5. R5(AB) = gia trj RVR trung binh 5 phiA trong khoang thai gian AB (tir 10 phut tuft den 5 phut truac thai diem quan trac) va R5(AB)= gia trj RVR trung binh 5 phOt trong khoang thai gian BC (till, 5 phitt truac den thai diem quan frac).

6. CB (cumulonimbus) va TCU (towering cumulus) neu chu'a duvc chi ra a mOt trong cac lap khac.

7. Thal gian tinh trung binh (c16i vai cac gia trj trung binh); va trong twang hqp c6 the thi bieu thi khoang thai gian xay ra cac gia tri ci,rc trj a gem tren ben trai.

8. Theo Tai lieu WMO-No.306, Tap 1.1, 15.5.5 Phan A, cac he thong do lu'ang duvc khuyen cao de tOc dO gi6 giat bleu thi gia trj trung binh 3 giay cua tOo dO gio tirc thai.

9. N/A = khong ap dung.

10. QFE se duvc bao cao neu can thiet. DO cao tham chieu cho QFE phai la mu,c cao san bay ngoai trir du'ang CHC tiep can chinh xac va duang CHC tiep can kh6ng chinh xac vai MCFC cao cua ngua,ng du'ang CHC 2 m (7 ft) that° hen hoac cao hen mire cao san bay.

11. Theo quy dinh doi vai nh6m thong bao phu cua MET REPORT/SPECIAL.

12. Ngoai ra co the bao gOm nhiet dO mat bien, trong thai cua bien hoac do cao song (theo th6a thuan hang khong khu \Arc).

13. Bac) cao neu RVR va/hoac VIS <1 500 m, giai flan duai va giai hen tren do' vai vi'ec bao cao RVR la 50 va 2000 m.

14. Phuc V1,1 ha canh tai san bay co duang bang tiep can chinh xac varnirc cao ngu'ang duang CHC dual dO cao san bay 15 m, mirc cao nguang du'ang CHC duvc sir dung lam min tham chieu.

15. Do khi Op theo phan mural (0,1) hPa.

(Theo Phy dinh C Phu Lien 3 ICAO - ATTACHMENT C. Selected criteria applicable to aerodrome reports).

72

TCCS 25:2019/CHK

PHU LUG E: (Quy Binh) MAU BANG TOM TAT KHi HAU SAN BAY

BANG TOM TAT KHi HAU SAN BAY

T6ng hap torn tat so Iieu trung binh khi hau cho tcvng thang trong nam

San bay:

Thal gian thong ke: TO' nam 20 den nam 20.. Tong so On quan trac.

VT db: Kinh clO: DO* cao tren mt,.pc bien: (m)

-e)

MAU E

CAC DAI LUVNG KO TU'Q'NG

Dan vi •

S6 LIEU TRUNG BINH THEO CAC THANG Ghi chn

Than 1

Than 2

Than 3

Than 4

Thing 5

Than 6

Tilling 7

Tilling 8

Than 9

Than 10

Than 11

Thang 12

1. KhI ap mb

2. Nhietd6 °C

2.1. Nhiet d6 trung 'Dinh °C

2.3. Ccrc dai tuyet d6i °C

2.4. Ccrc tieu tuyOt dOi °C

3. D6 Om tuvng dOi %

4. Gib be mat theo 16

hutyng la ban

4.1 Hir&ng gib thinh hanh theo 16

hu6ng la ban

4.2 T6c d0 06 trung binh kt

4.3 TOc d0 gi6 max kt

5. SO ngay CO styang MO ngay

6. 56 ngay CO mu ngay

7. SO ngay CO giang thiiy (mu'a, miya rao, mu'a phOn..)

ngay

73

TCCS 25:2019/CHK

8. SO ngay CO dOng ngay

9. SO ngay cO may TCU, CB ngay

10. SO ngay CO tam nhin <= 60 m (hOOC u'u tien mCrc tieu chuen t6i thi6u sin bay neu c6 the lip thOng ice)

ngay

11. SO ngay CO tran may <= 800 m

(hoic u'u tien mCpc tieu chAn rdi thgu sin bay n6u c6 the lip thong Ice)

ngay

74

TCCS 25:2019/CHK

PHU LUC G: (Tham khao) MAU BANG TOM TAT KHI HAU SAN BAY

BANG TOM TAT KHI HAU SAN BAY

MAU G1

Tin suit xay ra (%) hverng va t6c do gio thuO'c nhu'ng khoang gia tri cu the cho thang cu the trong nam

San bay: Dvong CHC: Thing:

Thai gian thong Ice: Tir nam 20.. Ten nam 20.. Tang so Ian quan Wag.

Vi c1O - Kinh do. DO cao tren mu'c bi6n - (m)

Huikng gio

TOC DO GIO (KT)

Lang '

Gia, 1 -5 6-10 11-15 16-20 21-25 26-30 31 -35 36-40 41-45 46-50 >50

Tong , -

so

Lang gib

35-36-01

02-03-04

05-06-07

08-09-10

11-12-13

14-15-16

17-18-19

20-21-22

23-24-25

26-27-28

29-30-31

32-33-34

Ghi Th6ng ke tin suit (%) s6 tAn (obs) xay ra h&&ng/ toc do gi6 thu6c cac khoang gia tri tucng ung tre'n tong so tat ca cac obs quan trcic coa thang thong ke trong town b6 thai gian th6ng ke (VD: Tat ca cac obs ctia thang 6 cOa 5 nam th6ng ke khl hau).

75k—

TCCS 25:2019/CHK

BANG TOM TAT KHI HAU SAN BAY MAU G2

Tin suat xay ra (%) tam nhin ngang thAp chkei cac gia tri cu th6 tai cac theri di6rn trong ngay cua thang Cu the trong nam

San bay: OL.reyng CHC: Thang:

Thdi gian thong ke: 111, nam 20.. den nam 20.. TOng s6 Ian quan trac.

Vi db. Kinh db. CO cao tren mu'c bien• (m)

Thai gian

(UTC)

TAM NHIN NGANG KHi TU'gNG Ghi chu

< 200 < 600 (*) <800 (*) <1000 <1100 (*) <1500 < 3000

00 - 01

01 - 02

02 - 03

...

...

22 - 23

23 - 00

Ghi chtj

(*) Co the: thay the bang cac ngueing chua:n hoac cac ngcrOng khai thac san bay

76

TCCS 25:2019/CHK

BANG TOM TAT KHi HAU SAN BAY

MAU G3

Tin suit xay ra (%) tran may (ceiling) the!) &poi cac gia tri cy the tai cac thol diem trong ngay cua thing Cu the trong nam

San bay: Dt_rOmg CHC: Thing:

Thai gian thong Ice: TO' nam 20.. den nam 20.. T6ng so 16n quan tr6c.

Vi Kinh do DO cao tren mu'c bien (m)

Tho'i gian

(UTC)

TRAN MAY Ghi chu

< 30 (100 ft)

< 60 (*) (200 ft)

<90 (*) (300 ft)

<150 (*) (500 ft)

<300 (1000 ft)

00 - 01

01 -02

02 - 03

22 - 23

23 - 00

Ghi chu

(*) C6 the thay the bang cac ngtiong chuan hoac cac ngtrang khai thac san bay

77

TCCS 25:2019/CHK

BANG TOM TAT KHI HAU SAN BAY

MAU G4

Tin suit (%) nhiet do khong khi then bic 05 do C tai cac theyi diem trong ngay cua thing cu the trong nam

San bay: Dua -1g CHC: Thing:...

Thai gian th6ng ke: TO, nam 20.. cl4n nam 20.. Tang s6 Ian quan trac.

VI d6. Kinh c16. D6 cao ten mu'c bi4n. (m)

Thai gian

(UTC)

NHIT DO KHONG KHi

(-10)-(-5) (-5)-0 0-5 5-10 10-15 15-20 20-25 25-30 30-35 >35

01

02

03

...

...

...

...

22

23

Ghi chu

Ghi cha: Th6ng ke tan swat ( s6 tan (obs) xay ra Nhiat do khOng khi thuOc cac khoang gia tri tuang Ong Ire n tong s6 tat ca cac obs quan tr5c ctla thang thOng ke trong toan b*O theyi gian th6ng ke (VD: Tat ca cac obs caa thang 6 cOa 5 nam thong ke khi hau).

78

TCCS 25:2019/CHK

BANG TOM TAT KHI HAU SAN BAY

MAU G5

Tan suat xay ra hien tuvng gi6 dint tang thAp trong khu \ft...pc san bay tai cac thed diem trong ngay cua thang cu the trong nam

San bay: Diso'ng CHC: Thang:

Thai gian thong ke: TO' nam 20.. d6n nam 20.. T6ng s6 Ian quan tra- c.

Kinh dO. DO cao tren muyc bi4n. ...(m)

Thai (UTC

gian )

Glo DUT TANG THAP Ghi ch6

lieu Trung binh

Manh Rat manh

00 - 01

01 -02

02 - 03

...

...

...

22 - 23

23 - 00

Ghi chu

79

TCCS 25:2019/CHK

PHU LUC H: (Quy Binh) Danh muc t6i thi6u cac he thO'ng k9 thuat, trang bi, thik bi

sir dung cho so' MET

1 He thong k9 thuat, thik bi khi tuyng

STT HT k9 thu4t, thiet bi AMO MWO AMS Ghi cht)

il i

He thong quan trac theri

ti6ttcr d6ng x x

2) bao hien tuvng gio dirt

He thong do dac, canh hien x x

Khi CO danh gia va kha nang co

tuyng gi6 dirt tai san bay hoac

khu vcrc Ian can hoac then yau caw

cua Cuc HKVN

3) He thong ra da thitei fiat x

4)

Thiet bi dau cuoi hoac

he th6ng thu, xCr 19, hien

thi anh may ve tinh khi

tuvng

x x x( )* *: Doi vOi san bay co hot dOng bay

hang ngay

5)

Thiet bi dau cuoi hoac

he thong thu, XCY ly so

lieu khi tuvng ca ban

(s6 lieu GTS)

x x

6)

Thiet bi claw cuoi hoac

he th6ng thu, xCr 19, hien

thisan pham du' bao theri

fiat toan cau WAFS

x x

7) khi twang hang kh6ng

He thong co so' du' lieu Bao x x

g6m tinh nang Ityu trCr dCr lieu

khi hau hang kh6ng

8)

Cac thiet bi quan trac th6ng dung lam di,r

phOngdo (Jac gio, nhiet

dO, nhiet dO diem

suang, khi ap

x x

9)

He thong du' bac, so tri

hoac he thong thu, xir

19, hien thi san pham du'

bao so tri (NWP) dO

phan giai cao

x x

2 Cac thik bi chuyen dyng va ding cy phy tro, khac

1)

He thong thOng tin not

mang, man hinh hien thi

,.• lieu Bang lieu clang ban tin

TEXT, d6 hoa

x x

x

2) Thiet bi dau cuoi he x x x

80

TCCS 25:2019/CHK

thong AFTN/AMHS (co dia chi c1:6u cueii riOng)

3)

Dutmg truyen va thiet bi z

hien thi bao dam cap nhat lien tuc cac yeu to khi tucyng san bay

x x x

S6 lieu cap nhat phai dirgc ghi kru tv dc)ng

4)

He thong (bang hoac sa d6) tieu diem tam nhin ngang khi twang san bay

x x

5) Lien lac dien thoai va IDO dam

x x(*) x (*): -10y then yeu cau thcrc to dia ca so'.

6) Internet x x x

7) May in, may photo, may fax

x x x

8) Ban, ghe x x x

9) He thong chief] sang va chieu sang khan cap

x x x(*)

10) Thiet bi bao chay va thiet bi chu'a chay

x x x

11) He thong dieu h6a khOng khi

x x x

12) Ngu6n dien va nguOn dien du'phOng

x x x

13) Tii sach nghiep vu, ban d6, so do

x x x

81

\resse-bal to locate

aneTcr-eter n sito closest

F'° cistances to 0 rxway

teA'

I

Not‘21. ,09 .%

BJkIng and navigaton aids

wh ch reed not be closer to rviway

RJ-kray TaxiTim endt~ Et m

1475 ri

I4 120 m

114-- --ISO m strip

-................„-.......-, . I flinS.^11.Z.,7 et-S' t

10 m .Or beyond"). mast

0 Essential -av cation aics shall be noJnted on frangicle supports

'OBSTACLE FREE ZONE'

Essential navigation aics snc,.ld oe Taunted or 'rangible sJpports

®it

TCCS 25:2019/CHK

PHU 1_1)C I: (Quy Binh) Han ch6 v6 tinh kh6ng d6i veyi vied dat thi6t bi quan trac san bay

(Theo Tai lieu DOC 8896 dia ICAO, phan Phu luc 2 „Vi tri crOt thief bi quan tr6c san bay')

'Anemometer mast closest distance

to runway fcr usual siting'

Siting of aeronautical meteorological instrument sensors

(A) "OBSTACLE FREE ZONE" — Khu vtsc khOng chung ngai vat (OFZ): Noi chung, cam ben khi to vng khOng du'oc vi pham khu vuc nay trir trutng hap CO you to dia phutng dac biet can thiet, khi do cam ben phai co dO linh host, duvc chieu sang hoac neu co the thi duvc ;On' vai mot chutng ngai vat san CO.

(B) 1) May do tam nhin (tam nhin dutng CHC) nam trong khoang tit 66 m den 120 m tit tim du'Ong CHC;

2) May do db cao than may CO the duvc data khu vcrc nay neu khOng duvc dat On diem dank dau giO'a (middle marker);

3) Neu can thiet phai dat tong dai le duoTig CHC, may do giO vti dO cao 10 m phai co khoang cach toi thieu 90 m tit tim duVng CHC.

(C) Vi tri th6ng thutng ci:la may do t6c do gi6: cac tim dutng CHC toi thieu 192 m doi vbei cot gio cao 6 m; 220 m vai cot gi6 cao 10 m, vcfri gia thiet gig do tai khu vu'c nay CO the dai dian cho khu VI,PC dutng CHC.

82

TCCS 25:2019/CHK

PHV LUC K: (Quy Binh) vi4t tat (ICAO) SCE dung trong cac ban tin khi tuvng hang khong

A

AAA (or AAB, AAC ... etc., in sequence) Amended meteorological

message (message type designator)

ABV Above

ADS-C Automatic dependent surveillance — contract

AFTN Aeronautical fixed telecommunication network

AIREP Air-report

AIRMET Information concerning en-route weather phenomena which

may affect the safety of low-levelaircraft operations

ALT Altitude

AMD Amend or amended (used to indicate amended meteorological

message; message type designator)

APCH Approach

ASHTAM A special series NOTAM notifying, by means of a specific

format,changes in activity of a volcano, avolcanic eruption

and/or volcanic ash cloud that is of significance to aircraft

operations

AT... At (followed by time at which weather change is forecast to

occur)

ATS Air traffic services

B

BCFG Fog patches

BECMG Becoming

BKN Broken

BL Blowing (followed by DU = dust, SA = sand or SN = snow)

BLW Below ...

BR Mist

BTN Between

BUFR Binary universal form for the representation of meteorological

Data

C

C Centre (preceded by runway designation number to identify a

parallel runway)

C Degrees Celsius (Centigrade)

CALM Calm

CAT Clear air turbulence

CAVOK (to be pronounced "KAV-OH-KAY") Visibility, cloud and

present weather better than prescribedvalues or conditions

83

TCCS 25:2019/CHK

CB (to be pronounced "CEE BEE") Cumulonimbus

CCA (or CCB, CCC ... etc., in sequence) Corrected meteorological

message (message type designator)

CLD Cloud

CLIMB-OUT Climb-out area

COR Correct or correction or corrected (used to indicate corrected meteorological message; messagetype designator)

CPDLC Controller-pilot data link communications

CTA Control area

CU Cumulus

D

D Downward (tendency in RVR during previous 10 minutes)

DEG Degrees

DEPO Deposition

DIF Diffuse

DP Dew point temperature

DR ... Low drifting (followed by DU = dust, SA = sand or SN = snow)

DS Duststorm

DU Dust

D-VOLMET Data link VOLMET

DZ Drizzle

E

E East or eastern longitude

EMBD Embedded in a layer (to indicate cumulonimbus embedded in layers of other clouds)

END Stop-end (related to RVR)

F

FBL Light (used to indicate the intensity of weather phenomena, interference or static reports, e.g. FBL RA = light rain)

FC Funnel cloud (tornado or water spout)

FCST Forecast

FEW Few

FG Fog

FIR Flight information region

FL Flight level

FLUC Fluctuating or fluctuation or fluctuated

FM ... From (followed by time weather change is forecast to begin)

FRONT Front (relating to weather)

FT Feet (dimensional unit)

FU Smoke

FZ Freezing

FZDZ Freezing drizzle

84

TCCS 25:2019/CHK

FZFG Freezing fog

FZRA Freezing rain

G

G Variations from the mean wind speed (gusts) (followed by figures in METAR/SPECI and TAF)

GAIN Airspeed or headwind gain

GAMET Area forecast for low-level flights

GR Hail

GRIB Processed meteorological data in the form of grid point values expressed in binary form(meteorological code)

GS Small hail and/or snow pellets

H

H High pressure area or the centre of high pressure

HPA Hectopascal

HR Hours

HURON Hurricane

HVY Heavy (used to indicate the intensity of weather phenomena, e.g. HVY RA = heavy rain)

HZ Haze

IAVW International airways volcano watch

ICE Icing

INC In cloud

INTSF Intensify or intensifying

ISOL Isolated

K

KM Kilometres

KMH Kilometres per hour

KT Knots

L

L Low pressure area or the centre of low pressure

LAT Latitude

LCA Local or locally or location or located

LINE Line (used in SIGMET)

LONG Longitude

LOSS Airspeed or headwind loss

LTD Limited

LVL Level

LYR Layer or layered

M

M Metres (preceded by figures)

85

TCCS 25:2019/CHK

M Minimum value of runway visual range (followed by figures in METAR/SPECI)

MAX Maximum

MBST Microburst

MET Meteorological or meteorology

METAR Aerodrome routine meteorological report (in meteorological code)MET REPORT Local routine meteorological report (in abbreviated plain language)

MID Mid-point (related to RVR)

MIFG Shallow fog

MNM Minimum

MOD Moderate (used to indicate the intensity of weather phenomena, interference or static reports,e.g. MODRA = moderate rain)

MOV Move or moving or movement

MS Minus

MSL Mean sea level

MT Mountain

MTW Mountain waves

MWO Meteorological watch office

N

N No distinct tendency (in RVR during previous 10 minutes)

N North or northern latitude

NC No change

NE North-east

NIL None or I have nothing to send to you

NM Nautical miles

NOSIG No significant change (used in trend-type landing forecasts)

NOTAM A notice distributed by means of telecommunication containing information concerning theestablishment, condition or change in any aeronautical facility, service, procedure or hazard, thetimely knowledge of which is essential to personnel concerned with flight operations

NSC Nil significant cloud

NSW Nil significant weather

NW North-west

0

OBS Observe or observed or observation

OBSC Obscure or obscured or obscuring

OCNL Occasional or occasionally

OPMET Operational meteorological (information)

OVC Overcast

P

P Maximum value of wind speed or runway visual range (followed by figures in METAR/SPECI andTAF)

PL Ice pellets

86

TCCS 25:20191CHK

PO Dust/sand whirls (dust devils)

PRFG Aerodrome partially covered by fog

PROB Probability

PS Plus

PSYS Pressure system(s)

QFE Atmospheric pressure at aerodrome elevation (or at runway threshold)

QNH Altimeter sub-scale setting to obtain elevation when on the ground

R

R Runway (followed by figures in METAR/SPECI)

RA Rain

RAG Ragged

RE Recent (used to qualify weather phenomena, e.g. RERA = recent rain)

RNAV (to be pronounced "AR-NAV") Area navigation

ROBEX Regional OPMET bulletin exchange (scheme)

RRA (or RRB, RRC ... etc., in sequence) Delayed meteorological message (message type designator)

RTD Delayed (used to indicate delayed meteorological message; message type designator)

RVR Runway visual range

RWY Runway

S

S South or southern latitude

S State of the sea (followed by figures in METAR/SPECI)

SA Sand

SCT Scattered

SE South-east

SEA Sea (used in connection with sea-surface temperature and state of the sea)

SECN Section

SEV Severe (used e.g. to qualify icing and turbulence reports)

SFC Surface

SG Snow grains

SH Shower (followed by RA = rain, SN = snow, PL = ice pellets, GR = hail, GS = small hail and/orsnow pellets or combinations thereof, e.g. SHRASN = showers of rain and snow)

SIG Significant

SIGMET Information concerning en-route weather and other phenomena in the atmosphere which mayaffect the safety of aircraft operations

SN Snow

SNOCLO Aerodrome closed due to snow (used in METAR/SPECI)

SPECI Aerodrome special meteorological report (in meteorological code)

SPECIAL Local special meteorological report (in abbreviated plain language)

SQ Squall

87

TCCS 25:2019/CHK

SQL

SS

STNR

SW

T

TAF

TC

TCAC

TCU

TDO

TEMPO

TL

TN

TO To ...

TOP

TREND

TS

TS .

TURB

TX .

U

UIR

UTC

VA

VAAC

VC

VER

VHF

VIS

VOLMET

VRB

VV...

Squall line

Sandstorm

Stationary

South-west

T

Temperature

Aerodrome forecast (in meteorological code)

Tropical cyclone

Tropical cyclone advisory centre

Towering cumulus

Tornado

Temporary or temporarily

Till (followed by time by which weather change is forecast to end)

Minimum temperature (followed by figures in TAF)

(place)

Cloud top

Trend forecast

Thunderstorm (in aerodrome reports and forecasts, TS used alone means thunder heard but noprecipitation at the aerodrome)

Thunderstorm (followed by RA = RAIN, SN = snow, PL = ice pellets, GR = hail, GS = small hailand/or snow pellets or combinations thereof e.g. TSRASN = thunderstorm with rain and snow)

Turbulence

Maximum temperature (followed by figures in TAF)

U

Upward (tendency in RVR during previous 10 minutes)

Upper flight information region

Coordinated Universal Time

V

Variations from the mean wind direction (preceded and followed by figures in METAR/SPECI,e.g. 350V070)

Volcanic ash

Volcanic ash advisory centre

Vicinity of the aerodrome (followed by FG = fog, FC = funnel cloud, SH = shower, PO = dust/sandwhirls, BLDU = blowing dust, BLSA = blowing sand, BLSN = blowing snow, DS = duststorm,SS = sandstorm, TS = thunderstorm or VA = volcanic ash, e.g. VCFG = vicinity fog)

Vertical

Very high frequency [30 MHz to 300 MHz]

Visibility

Meteorological information for aircraft in flight

Variable

Vertical visibility (followed by figures in METAR/SPECI and TAF)

88

TCCS 25:2019lCHK

W West or western longitude

W... Sea-surface temperature (followed by figures in METAR/SPECI)

WAFC World area forecast centre

WAFS World area forecast system

WI Within

WID Wide

WIND Wind

WKN Weaken or weakening

WRNG Warning

WS Wind shear

WSPD Wind speed

WX Weather

89