Swarthmore snow report!
Dec. 20th, 2009 01:21 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
I just got back from walking around lower campus (roughly Pittinger through Sharples) taking depth measurements. Swat's about four miles from PHL airport, but even though the airport is reporting 22.9", I'm reporting 11.0". Did something go wrong?
I don't think so, on my end anyway. I took a dozen measurements, in places reasonably wind-shaded but not near buildings (or right next to paths or trees). I got:
10.5, 12, 9, 10, 9.5, 12, 13, 12, 11, 11, 10, 12.
So, some variation but nothing near what the airport says. I did the same thing in 1996, when the airport officially reported 30", and I got 15". Maybe Swarthmore is a mysterious low-snow pocket? Maybe the airport gets mysteriously high readings?
Anyway, I'm cold and it's beautiful outside. And earlier today I got to go sledding on a large piece of cardboard I've been saving for over a year for just that purpose. What more can you ask for? Happy snowstorm of 2009, everyone!
I don't think so, on my end anyway. I took a dozen measurements, in places reasonably wind-shaded but not near buildings (or right next to paths or trees). I got:
10.5, 12, 9, 10, 9.5, 12, 13, 12, 11, 11, 10, 12.
So, some variation but nothing near what the airport says. I did the same thing in 1996, when the airport officially reported 30", and I got 15". Maybe Swarthmore is a mysterious low-snow pocket? Maybe the airport gets mysteriously high readings?
Anyway, I'm cold and it's beautiful outside. And earlier today I got to go sledding on a large piece of cardboard I've been saving for over a year for just that purpose. What more can you ask for? Happy snowstorm of 2009, everyone!
no subject
Date: 2009-12-20 06:35 am (UTC)no subject
Date: 2009-12-20 01:20 pm (UTC)no subject
Date: 2009-12-20 03:34 pm (UTC)Unofficial, of course, and there may have been a little more that fell after 2030, but that's well within the ballpark of your numbers. I think there may have been some bands, and it's completely plausible that a band or two hit the airport and not Swarthmore, right? Beyond that, I think the airport number is just high.
I'm pretty sure we got more than the reported 9.5 in Ambler, but it's hard to tell.
no subject
Date: 2009-12-20 03:38 pm (UTC)no subject
Date: 2009-12-20 04:09 pm (UTC)no subject
Date: 2009-12-20 07:02 pm (UTC)no subject
Date: 2009-12-20 07:03 pm (UTC)no subject
Date: 2009-12-20 07:43 pm (UTC)no subject
Date: 2009-12-20 08:01 pm (UTC)no subject
Date: 2009-12-21 05:36 pm (UTC)Citation: http://www.straightdope.com/columns/read/150/how-do-they-measure-snowfall
no subject
Date: 2009-12-21 06:08 pm (UTC)But if they used the liquid-equivalent method with this particular snow they'd've had a very hard time getting an anomalously *high* reading... this was very powdery, low-density snow, maybe a 15:1 density ratio with liquid water. So using a standard 10:1 ratio for this particular snowfall would have led them to calculate a snow depth one-third too *small*. I don't think that's what's going on.
no subject
Date: 2009-12-21 06:03 pm (UTC)no subject
Date: 2009-12-21 06:11 pm (UTC)no subject
Date: 2009-12-22 06:09 am (UTC)