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Wind Speed Legend
| Description | Beaufort | kt | km/h | |
|---|---|---|---|---|
  |
Calm - Light Winds | 0-3 | 0-10 | 0-19 |
 |
Moderate Winds | 4 | 11-16 | 20-30 |
 |
Fresh Winds | 5 | 17-21 | 31-39 |
 |
Strong Winds - Near Gale | 6-7 | 22-33 | 40-61 |
 |
Gale - Strong Gale | 8-9 | 34-47 | 62-87 |
 |
Storm - Hurricane | 10-12 | 48+ | 88+ |
Temperature Legend
| °C | °F |
|---|---|
| < -5 | < 23 |
| -5 - 0 | 23 - 32 |
| 0 - 5 | 32 - 41 |
| 5 - 10 | 41 - 50 |
| 10 - 15 | 50 - 59 |
| 15 - 20 | 59 - 68 |
| 20 - 25 | 68 - 77 |
| 25 - 30 | 77 - 86 |
| 30 - 35 | 86 - 95 |
| 35 - 40 | 95 - 104 |
| ≥ 40 | ≥ 104 |
Relative Humidity Legend
| < 25% | 25-50% | 50-75% | ≥ 75% |
Frost Risk Legend
| Nil | Low | Slight | Moderate | High | Severe |
UV Index Legend
| Low | Moderate | High | Very High | Extreme |
Radar/Satellite Animator Symbols
Rainfall Intensity
| light |  |
heavy |
The intensity of rainfall detected by weather radars is indicated using the above scale.
Doppler Wind
| 90km/h towards |  |
90km/h away |
On Doppler radar images the radial component of the movement of particles in the air is indicated using the above scale.
Lightning Events
Lightning strikes are displayed as crosses (ground events) or squares (cloud events) and fade from white (current) to red (30 minutes ago) to blue (60 minutes ago).
Positive strikes appear as diagonal crosses.
Accumulated Rainfall (since 9am)
Rainfall since 9am local time is displayed with coloured dots.
Observations Rose
Surface observations are displayed as a 'rose' with temperature, dew point and relative humidity down the left-hand side
and rainfall since 9am, pressure and location name displayed down the right-hand side.
Temperatures fade in colour from blue (cold) to red (warm) and dew points fade in colour from blue (moist) to red (dry).
How to Read a Wind Barb
A wind barb is a compact means of representing both wind speed and direction graphically.
Each full-barb represents 10 knots (nautical miles per hour), a half-barb 5 knots and a flag 50 knots. Calm conditions are indicated by a dot only. 1 knot is equal to around 1.9km/h.
In the examples to the left the first indicates a 5 knot wind from the south-west, the second a 15 knot wind from the west-north-west, the third a 45 knot easterly and the fourth a 65 knot northerly.
Warnings
| Severe weather, thunderstorm, tropical cyclone | |
| Fire weather | |
| Flood | |
| Coastal wind | |
| Graziers, bush walkers, frost |
Sentinel Hotspots
Sentinel hotspots detected within the last 6 hours are displayed. Sentinel is a satellite-based national bushfire monitoring system operated by Geoscience Australia.
| ≥ 150°C | |
| ≥ 100°C | |
| ≥ 50°C | |
| < 50°C |
Weather Forecast Icons
Clearing shower
Cloudy
Cloud and wind increasing
Cloud increasing
Drizzle
Drizzle clearing
Fog then sunny
Frost then sunny
Hazy
Heavy rain
Heavy showers
Increasing sunshine
Late shower
Late thunder
Mostly cloudy
Mostly sunny
Overcast
Possible shower
Possible thunderstorm
Rain
Rain and snow
Rain clearing
Rain developing
Rain tending to snow
Showers
Showers easing
Showers increasing
Snow
Snowfalls clearing
Snow developing
Snow showers
Snow tending to rain
Sunny
Thunderstorms
Thunderstorms clearing
Windy
Windy with rain
Windy with showers
Windy with snow
Wind and rain increasing
Wind and showers easing
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Signs indicating Australia's cool season arrival
16:15 AEST Mere hours after our Total Lightning Network went quiet over the Australian continent, the Himawari satellite captured a clear, textbook snapshot of the arrival of Australia's cool season. A few distinguishing features should catch your eye: A band of cloud streaming over northern WA and towards the nation's interior A distinct clearing of cloud from most of the NT's Top End, and A band of cloud crossing to the south of WA Turns out, all three of these features point to one thing: winter is knocking at the door. Image: Himawari satellite imagery and mean sea level pressure (ECMWF) over Australia on the morning of Saturday, April 27th, 2024.
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