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freeze frost

10 Mar 2009
0°C / 32°F

Just notes of the albany area weather stuff from freezefrost. PlantingOaks pointed it to me a year ago, and mentioned it again in a recent group post. Here’s the url: http://www.ncdc.noaa.gov/oa/climate/freezefrost/freezefrost.pdf

I thought I should copy the Albany stuff here because it’s a huge pdf that is scanned and unsearchable (because, you know, having an intern spend a couple of hours using image-to-text software on the scanned images to make the document more useful would apparently have been unthinkable).

Spring:
Probability that it will get below 36F after date:
90% May 6, 50% may 21, 10% june 5
Probability that it will get below 32F after date:
90% April 21, 50% may 7, 10% may 24
Probability that it will get below 28F after date:
90% April 10, 50% April 23, 10% may 5

Fall:
Probability that it will get below 36F after date:
10% sept 12, 50% sept 24, 90% oct 6
Probability that it will get below 32F after date:
10% sept 19, 50% sept 29, 90% oct 10
Probability that it will get below 28F after date:
10% oct 3, 50% sept 15, 90% oct 28

Frost Free Period:
Days above 36F: 145 10%, 126 50%, 107 90%
Days above 32F: 163 10%, 144 50%, 126 90%
Days above 28F: 192 10%, 175 50%, 158 90%

Freeze/Frost Probability (percentage of days at or below temperature threshold):
36F: 48%
32F: 41%
28F: 32%

So… doing my own math, this means:
Days below temperature threshold:
36F: 175
32F: 149
28F: 102

I think comparing days below the temperature threshold to the frost free period gives me some indication of how many warm days I’m likely to get after the frost free period. So, 50% of the time, I should expect to have:
64 winter days above 36F
72 winter days above 32F
88 winter days above 28F

That’s actually pretty refreshing. Most years, only a few more than half of the winter days will be really cold. Not too shabby.


Photos


Comments

cm, you have clearly never worked for government. Scanners? That’s 1980s technology. They haven’t gotten there yet. And image to text takes you all the way into the late 90s. You are dreaming.

Posted on 10 Mar 09 (over 10 years ago)

Well that is an AMAZING website. I found all sorts of fascinating yet useless information (buoy data from 1985 anyone?). How do I find fascinating useFUL information? Tried in their search “freeze frost” and “freeze frost Chicago” I got maps but not your terrific list. Got any tips?

Posted on 10 Mar 09 (over 10 years ago)
cristyn

cristyn

Folia Helper

United States5b

um… that’s the thing, it’s in this pdf that I linked to (yes, someone did scan the 200+ page document). And it’s not all layed out with text explaining anything; you just get columns of unexplained numbers. And you have to scroll through the whole damned thing to find your city. And somewhere, in the several pages of unsearchable text at the beginning of the document is a brief explanation of how to read the table.

Posted on 10 Mar 09 (over 10 years ago)

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Gardener

cristyn

Albany, New York

United States



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