Contents
How do I view cloud tops in ForeFlight?
You can also infer actual tops by going to the Imagery tab in ForeFlight and selecting Infrared. These static IR satellite images provide you with cloud top temperature. Basically, the colder the cloud top, the higher the clouds.
Are clouds reported MSL or AGL?
Cloud Height: Remember, METAR and TAF report the height of clouds AGL, not MSL. OVC040 = Overcast at 4,000 ft above the airport. If the airport is 1,000 ft, cloud bases are then at 5,000 ft MSL.
How are cloud tops calculated?
Find the difference in temperatures from the surface to the cloud tops. The difference between -8 and -22 = -16 or 16 degrees. The normal lapse rate is 2 degrees C for every 1000 feet, so then we divide 16 by 2 and get 8 (thousand feet). 8000 feet above the surface is the top of the clouds.
What determines how icing is reported on a PIREP?
The rate of icing accumulation (trace, light, moderate, severe) determines how icing is reported in a PIREP.
What enhanced satellites show?
The color-enhanced infrared (IR) satellite image is designed to visually highlight the coldest cloud tops. Cold cloud tops are often indicative of active thunderstorms that can produce severe or extreme convective turbulence.
Are clouds reported AGL?
Clouds are always reported by weather stations in feet above ground level (AGL). To do it, you need to find the cloud height in feet above mean sea level (MSL). That’s as simple as adding the elevation of the reporting station to the reported cloud heights.
Who do you report PIREPs to?
A pilot report or PIREP is a pilot’s report of actual weather conditions encountered while airborne. Typically, pilots file a report to ATC or Flight Service when the weather conditions are not the same as the forecast, or when the conditions are actually worse than the forecast.
How are PIREPs coded in a weather report?
pirep encoding PIREPs shall be coded to ensure the PIREP is stored and subsequently distributed with the surface observation location nearest the condition being reported. If more than one SA location is appropriate, select the location that provides the greatest distribution and/or prominence, such as a major hub airport.
When do you report altitude in a PIREP?
The altitude is reported only if it is different from the altitude reported at the beginning of the PIREP on the “/FL” line. /RM: Remarks. The most hazardous element comes first. The remark section is used to clarify something in the report. Occasionally you will see a slash odd three-letter identifier in the Remarks section.
What does MSL mean in a PIREP report?
In reports disseminated as PIREPs, height references are given the same as received from pilots, that is, above MSL. This means some conditions may be reported MSL as read of the altimeter at local barometer settings while others may be set at standard pressure and read from there. I would assume that altitude reports less than 18,000ft are MSL.
How to read pilot reports ( PIREPs ), thinkaviation?
Just type the term you see in the PIREP. For example, I typed: “PC type of aircraft,” “PA type of aircraft,” “B738 type of aircraft” and it should come up with pictures and all! Here are some common letters and associated aircraft to help you out: