What does WS mean in a TAF?

Wind shear
Wind shear is encoded with the contraction WS followed by a three-digit height, slant character, and winds at the height indicated in the same format as surface winds. The wind shear element is omitted if not expected to occur.

How long are SIGMETs valid for?

SIGMETs are issued for 6 hour periods for conditions associated with hurricanes and 4 hours for all other events. If conditions persist beyond the forecast period, the SIGMET is updated and reissued. Convective SIGMETs are issued hourly for thunderstorm-related aviation hazards.

What’s the difference between METAR and TAF?

A TAF report is valid for 24 to 30-hour time periods and is typically updated four times a day. Thus, the distinction is quite clear – a METAR pertains to current weather conditions, while a TAF pertains forecasted weather for the next 24 to 30 hours.

What are the main types of aviation weather reports?

There are four types of inflight aviation weather advisories: the SIGMET, the Convective SIGMET, the AIRMET (text or graphical product), and the Center Weather Advisory (CWA).

What is WS METAR?

In a METAR, civil aerodromes may include wind shear if reported along the take off or approach paths in the lowest 1600 ft with reference to the runway. WS is used to begin the group, e.g. WS TKOF RWY20. If the wind shear is affecting all runways, WS ALL RWY is reported. Aerodrome Colour State.

What does K stand for in METAR?

KPIT is the ICAO station identifier. The usual 3 letter identifiers we are all familiar with are now. preceded by a “K” for the contiguous United States. Alaska and Hawaii will use 4 letter identifiers. beginning with “PA” and “PH” respectively.

How many types of SIGMETs are there?

two types
There are two types of SIGMETs: convective and non-convective.

How do I read aviation TAFs?

How to read a TAF weather forecast

1. Station identifier (KLAX)
2. Date and time of forecast (220520Z)
3. Valid time period (2206/2312)
4. Forecasted wind speed and direction (VRB08KT)
5. Forecasted visibility (06SM)
6. Forecasted weather conditions (PRSN)
7. Forecasted sky conditions (SCT024 BKN030 OVC048)
8. Other data.

How can I learn METARs?

The first two digits are the date, the 16th of the month, and the last four digits are the time of the METAR, which is always given in coordinated universal time (UTC), otherwise known as Zulu time. A “Z” is appended to the end of the time to denote that the time is given in Zulu time (UTC) as opposed to local time.

What does P mean in a METAR?

P. indicates greater than the highest reportable value. PCPN. precipitation.

What does 9999 mean in METAR?

The largest reportable metric value is 9999. This value represents a visibility greater than 9000 meters (7 SM or more). To convert visibility values from meters to statute miles see Attachment 3 on page 33 or see Flight Information Handbook conversion tables. 8. METAR.

How do you read aviation weather?

How do I decode a METAR report?

Decoding a METAR

1. PHNL = the airfield, Honolulu’s Daniel K.
2. 250953Z = the date and time of the report.
3. 05007G17KT = the wind conditions.
4. 10SM = visibility.
5. FEW024 / FEW040 = cloud cover.
6. 27/19 = the temperature and dewpoint.
7. A3001 = the atmospheric pressure, a.k.a. altimeter setting.

What is TCU METAR?

TCU – Towering Cumulus. Other: A01 – Automated Observation without precipitation discrimination.