107.6W Record and Report Tornadoes and Thunderstorm

What are the abbreviations for a tornado, waterspout, funnel cloud and a thunderstorm?

+FC for Tornado and Waterspout, FC for Funnel Cloud, TS for Thunderstorm

Is a separate report required for thunderstorm activity that ended at 1822 and restarted at 1836?

No, Because breaks of less than 15 minutes are ignored.

Is a separate report required for thunderstorm activity that ended at 1822 and restarted at 1837?

Yes, Because thunderstorm occurred after the 15 minute break.

During observation, when do you start and end a report for thunderstorm, waterspout or a funnel cloud?

Start when they are first observed or from a reliable source. They are no longer reported when they are no longer visible.

Is it possible to report a thunderstorm without hearing a rumbling sound?

Yes, Overhead lightning within the past 15 minutes and the local noise level is such as might prevent hearing thunder. Hail may also be an indicator of a thunderstorm in progress.

When a violently rotating column of air is not reaching the ground, we are observing an ___

Funnel Cloud

A Tornado is observed to the East and is moving West. How will this be reported in the Remarks?

METAR…RMK TORNADO E MOVE W

The Tornado that was previously observed to the East has disappeared. How will this be reported in the Remarks?

METAR…RMK TORNADO DSAPRD

A Tornado is reported from a reliable source 25 miles Southwest of London moving Southeast. How will this be reported in the METAR Remarks?

METAR: TORNADO REP 25SW LONDON MOV SE

A Funnel Cloud is reported from a reliable source of 55 miles North of Kenora with unknown movement. How will this be reported in the METAR Remarks?

METAR: FUNNEL CLD REP 55N KENORA MOV UNKNOWN

Constant Lighting cloud-to-cloud and cloud to ground observed in the south. How will this be reported?

CONS LTGCCCG S

Frequent Lighting cloud to ground in the east. How will this be reported?

FRQ LTGCG E

Occasional Lighting in cloud is observed to the west. How will this be reported?

OCNL LTGIC W

Distant lighting to the north, type unknown. How will this be reported?

DIST LTNG N

Thunderstorm activity shall be reported within what time?

15 minutes

What are the three types of lightning reported in Canada and their abbreviations?

Lightning cloud-to-ground LGTCG

Lightning cloud-to-cloud LGTCC

Lightning in cloud LGTIC

What must the observer report in the remarks for Thunderstorm, Waterspout, or Funnel clouds?

The direction from the observing site and the direction towards which it is moving.