Hail Scale for Storm Spotters
Free App
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About Hail Scale for Storm Spotters
A handy little app that displays a chart at 1:1 scale so that you can accurately measure hail stones according to the National Weather Service Standards. Includes all the latest recognized sizes for proper reporting of hail sizes.
No need to carry a ruler or other objects to photograph and record hail. Report accurately to the NWS and eliminates guessing. Use Rapid Report to photograph and upload your report to the NWS, Facebook and Twitter.
Sizes included in chart are:
0.25" (Pea) Size Hail
0.75" (Penny) Size Hail
0.88" (Nickel) Size Hail
1.00" (Quarter) Size Hail
1.25" (Half Dollar) Size Hail
1.50" (Walnut) Size Hail
1.75" (Golf Ball) Size Hail
2.00" (Hen Egg) Size Hail
2.50" (Tennis Ball) Size Hail
2.75" (Baseball) Size Hail
3.00" (Tea Cup) Size Hail
4.00" (Grapefruit) Size Hail
4.50" (Softball) Size Hail
Some users have reported inaccuracies in the ruler scales on the image.
To overcome this use the Calibrate Button in the upper left. Have a real ruler on hand for a one-time setup.
Your settings will be saved from each use so you don't have to redo the calibration each time.
If the ruler dimensions on the display are not matching up to a real ruler do the following:
1) Hold a ruler up to the scale and note if the image is larger or smaller than the ruler.
2) Press Calibrate
3) Pinch the image larger or smaller as needed.
4) Press Save
5) Check again with the ruler. If still off repeat steps 1 - 4
No need to carry a ruler or other objects to photograph and record hail. Report accurately to the NWS and eliminates guessing. Use Rapid Report to photograph and upload your report to the NWS, Facebook and Twitter.
Sizes included in chart are:
0.25" (Pea) Size Hail
0.75" (Penny) Size Hail
0.88" (Nickel) Size Hail
1.00" (Quarter) Size Hail
1.25" (Half Dollar) Size Hail
1.50" (Walnut) Size Hail
1.75" (Golf Ball) Size Hail
2.00" (Hen Egg) Size Hail
2.50" (Tennis Ball) Size Hail
2.75" (Baseball) Size Hail
3.00" (Tea Cup) Size Hail
4.00" (Grapefruit) Size Hail
4.50" (Softball) Size Hail
Some users have reported inaccuracies in the ruler scales on the image.
To overcome this use the Calibrate Button in the upper left. Have a real ruler on hand for a one-time setup.
Your settings will be saved from each use so you don't have to redo the calibration each time.
If the ruler dimensions on the display are not matching up to a real ruler do the following:
1) Hold a ruler up to the scale and note if the image is larger or smaller than the ruler.
2) Press Calibrate
3) Pinch the image larger or smaller as needed.
4) Press Save
5) Check again with the ruler. If still off repeat steps 1 - 4
All Application Badges
Free
downl.
downl.
Android
3.0+
3.0+
Android app
App History & Updates
What's Changed
Moved image into main frame automatically.
Moved image into main frame automatically.
Version update Hail Scale for Storm Spotters was updated to version 1.3
More downloads Hail Scale for Storm Spotters reached 1 000 - 5 000 downloads
What are users saying about Hail Scale for Storm Spotters
Q
by Q####:
by Q####:
Handy app to have if you don't have a baseball or golf ball or a ruler to measure hailstones with.
M
by M####:
by M####:
I like it a lot. It is nice I found this because soon I will become a weather spotter.
M
by M####:
by M####:
great idea but my tattoo would be very quick to use. I tattooed ruler on myself.
T
by T####:
by T####:
Don't download
M
by M####:
by M####:
I like it a lot. It is nice I found this because soon I will become a weather spotter.
M
by M####:
by M####:
After tapping save, reverts to previous calibration. Tried a few times.
B
by B####:
by B####:
Great tool for weather scale in the construction, & Safety industry. Love it! ;-)
C
by C####:
by C####:
Lots handier than other means of measure when chasing or simply observing, reporting. Awesome little helper.
C
by C####:
by C####:
Will be really useful in the field during the chase season
M
by M####:
by M####:
The new calibration feature makes this work flawlessly on my HP Touchpad running Cyanogen Android 4.04. Using a ruler to calibrate it, I have it scaled to match within 1/16" over a 7 inch range, which is more than sufficient to be accurate for all hail sizes. This is a lot more convenient than carrying around a caliper or a printed & laminated comparison size chart!
M
by M####:
by M####:
The calibration update is excellent. Beware if you use a battery bar app...it will throw off the calibration; so it must be disabled for the setting the calibration and properly applying the calibration. Hope everyone is willing to put melting hail near their electronics!
Y
by Y####:
by Y####:
Contact me with other features you'd like to see!
U
by U####:
by U####:
App works well! Will come in handy this chase season!
by Q####:
I would give this a one star rating but i cant . Do not download :/ you can if you want :-)