How can weather apps all disagree this much?

[CitizenBBN]

Weatherunderground.com has tomorrow as high of 37, 20% chance of rain, wintry mix late

Weatherunderground phone app has 100% chance of snow tomorrow, high of 39, wintry mix late

NOAA app (just found it) has 80% chance of rain, mostly after 4pm, high 35, wintry mix late

Accuweather basically agrees with NOAA

weather.com has 100% chance of rain tomorrow, high 37


So it's either 100% chance of snow, 100% chance of rain, 80% chance of rain, or 20% chance of rain. lol.

I know what's going on, timing differences and such, but seriously all of these results depending on which site you check? All the forecasts basically come out of NOAA don't they?

[Darrell KSR]

People ridiculed Birmingham and Atlanta, but there really are a lot of moving parts to this kind of stuff that lead to that kind of disparity. And many, many models.

James Spann (the local rock star weatherman) does a great job of discussing different models and which in a given situation he thinks is more accurate and why. Dan could understand it and explain it in detail, I'm sure. I understand why there is uncertainty, but have no clue why.

via mobile app

[CitizenBBN]

I get there's a lot of uncertainty in the weather, but are they using different prediction sources and models or is it just sloppy translation of what NOAA says?

[Darrell KSR]

I get there's a lot of uncertainty in the weather, but are they using different prediction sources and models or is it just sloppy translation of what NOAA says?
I assume different models, or at least, different interpretations of given models.

via mobile app

[dan_bgblue]

I have no idea why the WU mobile and regular version are different. You do know that WU is owned by TWC now? Everyone is a forecaster these days, as all the models and model ensembles are available to the public in real time.

[CitizenBBN]

Didn't know TWC owned them, can't say I'm surprised. For a while I found their website unusable b/c of the ad volume. It was SOOOO slow to load. Wundermap has some nice features, also some dumb ones. the

NOAA free app I love for the basic forecast, but the radar is limited. Just shows the local radar (out of Jackson I guess in our case here), no regional etc. maps. That's OK for the most part. I keep both on the phone.

[PedroDaGr8]

Just gonna leave this here:

http://imgs.xkcd.com/comics/weather.png

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