Morning Glory cloud

E374299

The Morning Glory cloud is a rare, long, tube-shaped roll cloud that can stretch hundreds of kilometers and is famously observed in the skies over Australia’s Gulf of Carpentaria.

All labels observed (1)

Label Occurrences
Morning Glory cloud canonical 2

How this entity was disambiguated

Statements (52)

Predicate Object
instanceOf arcus cloud
meteorological phenomenon
roll cloud
formsInEnvironment high humidity in the lower troposphere
light to moderate low-level winds
stable boundary layer
temperature inversion near the surface
hasAppearance long, horizontal roll cloud
hasCloudType cumulus
stratocumulus
hasFirstScientificDescriptionYear 1940s
hasLength hundreds of kilometers
hasNotableLocation Burketown Morning Glory viewing area
hasObservationFrequencyGlobally very rare outside northern Australia
hasObservationFrequencyInGulfOfCarpentariaSeason often several events per season
hasPeakMonths October
September
hasResearchInterestIn boundary-layer meteorology
mesoscale meteorology
nonlinear atmospheric wave dynamics
hasSeasonalOccurrence late dry season in northern Australia
hasShape tube-shaped cloud band
hasTourismAspect attracts visitors to Burketown for cloud watching
hasTypicalHeightAboveGround about 100 to 2000 meters
hasTypicalSpeed about 10 to 20 meters per second
about 30 to 70 kilometers per hour
hasTypicalWidth about 1 to 2 kilometers
hasVerticalMotion rising air on leading edge
sinking air on trailing edge
isAssociatedWith Burketown
surface form: Burketown, Queensland

gravity waves in the lower atmosphere
mesoscale solitons
sea-breeze fronts
isDrivenBy gravity current dynamics
propagating atmospheric bore
isLinkedTo interaction of sea breezes from east and west coasts of Cape York Peninsula
nocturnal cooling over land
synoptic-scale pressure patterns over northern Australia
isMostFamouslyObservedIn Gulf of Carpentaria region
northern Australia
isObservedNear Cape York Peninsula
Gulf Country
isPrecededBy convergence lines over the Gulf of Carpentaria
isRare true
isSoughtBy glider pilots
hang glider pilots
sailplane pilots
occursMostFrequentlyAtTimeOfDay early morning
producesEffect gust front conditions
rapid changes in temperature and pressure at passage
sudden wind shift at surface
provides strong, long-lived lift for soaring aircraft

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Gulf of Carpentaria hasPhenomenon Morning Glory cloud
Burketown knownFor Morning Glory cloud