W09 - Remarks

Question 1

What is the purpose of the Remarks column on the 2322?

Answer 1

To record meteorological information of importance to aviation and other users which has not been given previously. Also used to record information that cannot be entered elsewhere. Such as; wind direction variation, wind shear within 1500’ above ground, RVR data, or ran out of room in column 32.

Question 2

How is information entered in column 41

Answer 2

Using abbreviations authorized in MANAB or plain English words shall be used as necessary to amplify or clarify the information. Information not of direct importance to aviation and not ment for transmission shall be enclosed in brackets.

Question 3

Priority of remarks in column 41

Answer 3

1. General Weather remarks, starting with “OBS TAKEN +tt” then in order of importance (Manobs 10.2.19.1 - 10.2.19.10) Also includes in-the-vicinity phenonena.2. Snowfall3. Rainfall4. Hail size5. RVR

Question 4

How is RVR data recorded in column 41?

Answer 4

RVR data shall be included in hourly and speci observations. RVR shall be reported for the active, or most aligned to the wind runway(s) when reporting prevailing visibility is 1SM or less and/or RVR value for the designated runway(s) is 6000’ or less.All RVR values shall be representitive of the touchdown zone of the active landing runway(s)Manobs 10.2.19.13

Question 5

Format for recording RVR in column 41

Answer 5

eg. RVR RWY09/1600FTIf visibility is variable, add a “U” for upward trend or “D” for downward trend. If no distinct change is observed, use “N” on the endif significantly variable;RVR RWY09/1600V0800FTIf visibility is greater then the max value that can be addressed, “P” shall append the # of feet, eg. P1600FTIf visibilitie is lower then min reportable, “M” shall append. eg. M0600

Question 6

When shall Contrails be noted in column 41

Answer 6

When they persist for 15 min or more. Rapidly dissapating contrails shall not be reported.

Question 7

Remark when AC7 building rapidly from SW

Answer 7

AC XTNDG RPDLY FM SW

Question 8

When ceiling overhead is measures at 400ft, but North of field it is 500ft

Answer 8

CIG 5 N OF FLD

Question 9

Ceiling Estimated with Ballon

Answer 9

BLN ESTD

Question 10

VV is reported as 000, but is measured at 35FT

Answer 10

CIG 35 FT

Question 11

If visibility in FG is 1/2SM but FG is quickly breaking up and visibility improving quickly.

Answer 11

VIS IMPRVG RPDLY

Question 12

A tornado (FC+) is observed to the SW and is moving E

Answer 12

TORNADO SW MOVG E

Question 13

Can a Funnel Cloud be abbreviated (FC) in remarks?

Answer 13

No

Question 14

Remark for wind shift

Answer 14

WSHFT tttt (tttt = 4 digit time at which wind shift began)

Question 15

Remark when wind variable from 180 to 260

Answer 15

180V260

Question 16

Remark for wind shift of threshold of runaway 09

Answer 16

WS RWY 09

Question 17

Remark for pressure rising rapidly

Answer 17

PRESRR

Question 18

Remark for Pressure falling rapidly

Answer 18

PRESSFR

Question 19

What do you record when Mountain Wave Clouds are observed?

Answer 19

Mountain or Standing Wave Clouds shall be reported in Remarks whether or not the clouds are predominant. Remarks shall indicate their presence throughout the period they are observed.eg. ROTOR CLDS NW or RDG LENTICULARS IN LYRS W

Question 20

When CB’s are observed what remarks must be made in column 41?

Answer 20

Where they were observed in relation to the point of observation, and direction they are moving.eg. CB NE MOVG RPDLY S

Question 21

When and how is snowfall remarked in column 41?

Answer 21

Newly fallen snow shall be reported in Remarks of an Hourly report if the accumulating depth of the new snow is 1cm or more (rounded) then the last rounded reported depth.Shall be reported /Sss/ (“S” for snow, “ss” two digit depth in whole cm)eg. measured snowfall since last report = 0.7cm, in remarks /S01/ref. W09 pg 23

Question 22

When and how is Rainfall remarked in column 41?

Answer 22

Newly fallen rain shall be reported in Remarks of an Hourly report if the accumulation of the rain is 10mm or more (rounded to nearest mm) then the last rounded reported accumulation.Shall be reported /Rrr/ (“R” for rain, “rr” two digit accumulation in mm)eg. measured accumulation of rain since last report = 9.8mm, in remarks /R10/ref. W09 pg 25

Question 23

When Hail is observed, what goes in Remarks?

Answer 23

The average size of the hail shall be estimated and recorded in column 41 in whole mm.eg. HAIL DIAM 09 MM

Question 24

If weather obs taken either early or late, what must go in Remarks?

Answer 24

OBS TAKEN + tt (tt = minutes)minutes are number of minutes either before or after the hour in which the Barometer was read.eg. Barometer read 18min past the hour;OBS TAKEN +18