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northwest.''
RDGS OBSCD W-N ``Ridges obscured west
through north.''
b. Obscuring Phenomena. (See TBL 14-1-18.)
7JO11 701.6150R.1 0CTH CGH 2G 1 37//1315//078
2/14/08 JO 7110.10T
General 14-1-7
TBL 14-1-18
Obscuring Phenomena
Contraction Phraseology
BLSN SCT000 ``Blowing snow obscuring three
to four-eights of the sky.''
DU BKN000 ``Dust obscuring five to
seven-eights of the sky.''
FG FU FEW000 ``Fog and smoke obscuring one to
two-eights of the sky.''
FU SCT020 ``Smoke layer two thousand
scattered.''
SN BKN000 ``Snow obscuring five to
seven-eights of the sky.''
c. Visibility. (See TBL 14-1-19.)
TBL 14-1-19
Visibility
Contraction Phraseology
SFC VIS 1/2 ``Surface visibility
one-half.''
SFC VIS 15 TWRINC ``Surface visibility one five,
tower in clouds.''
TWR VIS 3/4 ``Tower visibility
three-quarters.''
VIS S 1 W 1/4 ``Visibility south one, west
one-quarter.''
VIS 1V3 ``Visibility variable between
one and three.''
d. Weather and obstruction to visibility.
(See TBL 14-1-20.)
TBL 14-1-20
Weather and Obstruction
Contraction Phraseology
BCFG S ``Patchy fog south.''
DUST DEVILS NW ``Dust devils northwest.''
FG DSIPTG ``Fog dissipating.''
FU DRFTG OVR
FLD
``Smoke drifting over field.''
FUOCTY ``Smoke over city.''
GR 2 ``Hailstones two inches in
diameter.''
INTMT -RA ``Intermittent light rain.''
OCNL LTG DSNT
NW
``Occasional lightning distant
northwest.''
OCNL SHRA ``Occasional moderate rain
showers.''
-RA OCNLY +RA ``Light rain occasionally
heavy.''
RAB30 ``Rain began at three zero.''
SNB15E40 ``Snow began at one five,
ended at four zero.''
SNINCR 5/10 ``Snow increase five inches
during past hour, ten inches on
the ground.''
TS OHD MOV E ``Thunderstorm overhead,
moving east.''
FRQ LTGCG TS W
MOV E
``Frequent lightning cloud to
ground, thunderstorm west
moving east.''
UNCONFIRMED
TORNADO 15W
OKC MOV NE 2015
``Unconfirmed tornado one
five west of Oklahoma City,
moving northeast sighted at
two zero one five zulu.''
WET SN ``Wet snow.''
e. Wind. (See TBL 14-1-21.)
JO 7110.10T 2/14/08
14-1-8 General
TBL 14-1-21
Wind
Contraction Phraseology
PK WND 33048/22 ``Peak wind three three
zero at four eight occurred
at two two past the hour.''
WSHFT 30 ``Wind shifted at three
zero.''
f. Pressure. (See TBL 14-1-22.)
TBL 14-1-22
Pressure
Contraction Phraseology
PRESFR ``Pressure falling rapidly.''
PRESRR ``Pressure rising rapidly.''
g. Freezing Level Data. (See TBL 14-1-23.)
TBL 14-1-23
Freezing Level Data
Contraction Explanation
RADAT 87045 Relative humidity 87
percent, only crossing of
zero degrees Celsius
isotherm was four thousand
five hundred M-S-L.
RADAT 87L024105 Relative humidity 87
percent at the lowest
crossing of zero degrees
Celsius. Two crossings
occurred at two thousand
four hundred and one zero
thousand five hundred
M-S-L.
RADAT MISG The sounding terminated
below the first crossing of
the zero degree Celsius
isotherm. Temperatures
were all above freezing.
RADAT ZERO The entire sounding was
below zero degrees Celsius.
h. Icing Data. (See TBL 14-1-24.)
TBL 14-1-24
Icing Data
Contraction Explanation
RAICG 12 MSL Icing at one thousand two
hundred M-S-L.
RAICG 24 MSL SNW Icing at two thousand four
hundred M-S-L in snow.
i. Maintenance Data. (See TBL 14-1-25.)
TBL 14-1-25
Maintenance Data
RVR/RVV Phraseology
PNO ``Precipitation amount not
available.''
RVRNO ``R-V-R (or runway visual
range) information not
available.''
TSNO ``Thunderstorm/lightning
information not available.''
VISNO ``Visibility sensor
information not available.''
14-1-10. WEATHER ADVISORIES
a. When announcing weather advisories, include
the complete advisory description including the
product name and alphanumeric identification.
Specify Eastern, Central, or Western section as
applicable when stating WSTs.
PHRASEOLOGYAIRMET
ALERT WEATHER WATCH, ONE ZERO SEVEN FOR
SEVERE THUNDERSTORMS
CONVECTIVE SIGMET TWO SEVEN EASTERN
HOUSTON CENTER WEATHER ADVISORY ONE,
ISSUANCE TWO
SIGMET WHISKEY THREE
b. Do not read the OUTLOOK section of WSTs
when stating the advisory. Data contained in the
OUTLOOK concerning convective activity location,
　
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