338 reviews
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About this app

mPING UPDATED September 2, 2020! Download the update now!
The Meteorological Phenomena Identification Near the Ground project (mPING) needs you, the Citizen Scientist, to watch and report on precipitation.

mPING is looking for volunteers of all ages and backgrounds to make observations - teachers, classes, families, everyone, and anyone! This app is your portal for providing observations to researchers at NSSL. Your reports will help them develop and refine algorithms that use the newly upgraded dual-polarization NEXRAD radars to detect and report on the type of precipitation that you see falling. To do a good job, we need tens of thousands of observations from all over the US. We can succeed only with your help.

mPING volunteer observers can spend as much time as they want, from a little to a lot, making observations. The basic idea is simple: NSSL will collect radar data from NEXRAD radars in your area along with sounding data from our models during storm events, and use your data to develop and validate new and better algorithms. We have two focus areas: winter precipitation types, such as rain, freezing rain, drizzle, freezing drizzle, snow, graupel, ice pellets, mixed rain and snow, mixed ice pellets and snow and even observations of “none” when the precipitation has stopped, even if only briefly.

Why? Because the radars cannot see close to the ground at far distances and because automated surface sensors are only at airports. But the people affected by winter weather are everywhere so we need you to tell us what is happening where you are.

But we need more than winter weather details: when there are thunderstorms, we need to know if hail falls and, if it does, how big it is. Measuring with a ruler is best but, whatever you do, stay safe.

All you need to do is use this app to select the precipitation type. Tell us what is hitting the ground. NSSL scientists will compare your report with what the radar has detected and what our models think the atmosphere is doing, and use it to develop new technologies and techniques to determine what kind of precipitation such as snow, ice, rain or hail and its size is falling where.
Updated on
Sep 1, 2020

Data safety

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338 reviews
Ron J
December 24, 2019
I've used this application as a user for over three years. It's great to see weather when traveling. Users need to send "No Report" after they've had significant WX such as heavy rain & snow to indicate the storm has moved out of your area. I've found this app not only very informative to let me know how the storms are moving, but also, it's doggone fun.
21 people found this review helpful
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Gary E Moore
August 22, 2020
👍Waiting patiently for mPING to reactivate so can start using again!! With 2 systems in the Gulf right now, depending how they interact with each other and track inland, could POSSIBLY affect my area of the Midwest US (Indiana) ⛈️ Get a pop-up message stating ap is outdated for older version of Android. Never had problems before. Uninstalled and reinstalled 3 times and still not working. Worked just fine and has quite. About to storm at my location and can't report anything . Very disappointed
4 people found this review helpful
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University of Oklahoma
July 20, 2020
Hi! Sorry for the inconvenience! On July 7, 2020, mPING was flooded with false weather reports and was shut down temporarily. We are working to eliminate vulnerabilities that allowed these false reports but this is taking us some time. We will have it back up soon. We appreciate your patience! We will announce when it is back on mping.nssl.noaa.gov
Hannah Smith
January 4, 2022
App is fine but there is no option for just Snow. The only option I can select is Snow and/or graupel. Very confusing. Is that the right selection when it is just snowing? I emailed the developer a week ago but no response so far.
4 people found this review helpful
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University of Oklahoma
February 15, 2022
Use Snow/Graupel. SNow and graupel form in nearly identical microphysical environments, so we merged the two types.

What's new

Updated to support newer devices.
Improve code internals.
Minor bug fixes and enhancements.