(10) Lightning. When lightning is observed
at a manual location, the frequency and location is
reported.
When cloud-to-ground lightning is detected by an
automated lightning detection system, such as
ALDARS:
[a] Within 5 nautical miles (NM) of the
Airport Reference Point (ARP), it will be reported as
"TS" in the body of the report with no remark;
[b] Between 5 and 10 NM of the ARP, it
will be reported as "VCTS" in the body of the report
with no remark;
[c] Beyond 10 but less than 30 NM of the
ARP, it will be reported in remarks as "DSNT"
followed by the direction from the ARP.
EXAMPLE-
LTG DSNT W or LTG DSNT ALQDS

(11) Beginning/Ending of Precipitation/
TSTMS.
(12) TSTM Location MVMT.
(13) Hailstone Size (GR).

(5) Water Equivalent of Snow.
(6) Cloud Type.
(7) Duration of Sunshine.
(8) Hourly Temperature/Dew Point
(Tenths).
(9) 6-Hour Maximum Temperature.
(10) 6-Hour Minimum Temperature.
(11) 24-Hour Maximum/Minimum
Temperature.
(12) Pressure Tendency.
(13) Sensor Status.
PWINO
FZRANO
TSNO
RVRNO
PNO
VISNO
Examples of METAR reports and explanation:
METAR KBNA 281250Z 33018KT 290V360
1/2SM R31/2700FT SN BLSN FG VV008 00/M03
A2991 RMK RAE42SNB42

(14) Virga.
(15) VRB CIG (height).
(16) Obscuration.
(17) VRB Sky Condition.
(18) Significant Cloud Types.
(19) Ceiling Height 2nd Location.
(20) PRESFR PRESRR.
(21) Sea-Level Pressure.
(22) ACFT Mishap (not transmitted).
(23) NOSPECI.
(24) SNINCR.
(25) Other SIG Info.
(c) Additive and Automated Maintenance
Data.
(1) Hourly Precipitation.
(2) 3- and 6-Hour Precipitation Amount.
(3) 24-Hour Precipitation.
(4) Snow Depth on Ground.

Meteorology

METAR aviation routine weather
report
KBNA Nashville, TN
281250Z date 28th, time 1250 UTC
(no modifier) This is a manually generated
report, due to the absence of
"AUTO" and "AO1 or AO2"
in remarks
33018KT . wind three three zero at one
eight
290V360 wind variable between
two nine zero and three six
zero
1/2SM visibility one half
R31/2700FT . Runway three one RVR two
thousand seven hundred
SN . moderate snow
BLSN FG . visibility obscured by
blowing snow and fog
VV008 . indefinite ceiling eight
hundred
00/M03 . temperature zero, dew point
minus three
A2991 altimeter two niner niner one
RMK remarks

7-1-67