The winter of 2012 has been anomalous here in southeast Michigan.  Warm, warm, warm.  All winter long.  It’s a little frightening, knowing how we need cold freezes to kill back certain pest species, to reset the clocks for certain plant and crop species.  It’s a little frightening, knowing how temperatures help regulate tree bud production, so that they don’t erupt too early and the little fruits get frozen off by late cold snaps.

But I’m a science guy.  I wanted to know HOW warm it’s been.  Is it my imagination, or did January feel more like February?  Did we just skip January’s weather altogether?  I want data!

So I got some data.  Bottom line: We did skip January.  And more.  Let’s go over things a bit, starting in December and running til March 11, when I started gathering this data (hence, my spreadsheets stop there, unless I do an update sometime in the future).

About the Data:

I went online, and used a variety of sources.  Because there are lots of sources to choose some, including some very local ones (like the Adrian Airport, just a few miles south), it was tough.  But in the end I chose to report on weather station KDTW, which is at the Detroit Metro Airport, because it has a long historical record (back to 1874).  And this report is not so much about our precise weather at Dragonwood, so much as about the weather all of us here in the Midwest have been through of late.  I downloaded daily temperatures and made plots.  You could do this too.

Perspective:

Let’s look at a graph of southeast Michigan year-round average temperatures.

What do we see? In round numbers,

1. Summer peak daily average temp is around mid-70s.

2. Winter peak daily average temp is around mid-20s.  This is about 50°F lower than the summer.

3. In the fall and spring months, temperatures fall and rise quickly, about 10-12°F each month in Sep-Nov, and Mar-May.

What we don’t see?  How much monthly variety there is from year to year. Answer? Not that much.  The majority of months average within 2-3°F of their long-term average.  It’s a fairly rare month that is as much as 4-5°F above or below average.  On the average, roughly 80% of months fall within about 4-5°F of the normal, leaving those extra warm or extra cold months as outliers in the top or bottom 10% of records.

Example: this past November 2011 at KDTW, average temps were 46.6°F, which was 5.1°F above normal.  That was the 5th highest November average temperature in 130+ years of record keeping.  So November was really warm, as Novembers go.

Quick Overview:

Warm winter.  Really warm.

December: 5.4°F above normal (12th warmest on record):

So, what do we see?  First, the “normal” green solid line is the mean average temperature across the month, just like the imaginary line down the middle of the annual graph for KDTW up above.  Just eyeballing it, you can see that the average December “normal” temperature is about 30°F.

The daily data is the three wiggly lines representing daily high, low and mean (average) temperatures for last December.  Again, it’s easy to see that it was a warm December.  I’ve added a “2012 averaged” red dashed line that is a rough estimate of how much warmer than normal the month was.  Detail: it’s an 11-day moving average line, meaning the value represents the average of that day plus those of 5 days before it and the 5 days after it.  For the month as a whole, we averaged 5.4°F above normal (normal is 30.1°F).

January: 5.1°F above normal (17th warmest on record):

January average daily mean temp is 25.6°F.  January 2012 however averaged 30.7°F, a good bit higher.  In fact, astute readers will note that the January average temperature was actually just a tad warmer than the normal December is supposed to be.

We skipped January, in weather terms.

February: 4.5°F above normal (12th warmest on record):

February is normally almost as cold as January: just 3°F warmer, averaging 28.1°F.  But this February was a whopping 32.6°F, again being warmer than the average December, let alone Jan or Feb.

March: ??°F above normal (?th warmest on record):

March normal average temp is 36.9°F at KDTW.  So far we’re well above that, and the month is nearing the halfway mark, with nothing but warm weather forecast.  Normally, this is maple sap weather, with nice warm days, but good freezes on most nights.  And you can see two good freezes, the second one around March 9-10.  But that looks like the end of our season.  Without further nightly freezes, there’s no sap to flow from our sugary friends, and with extra warm days the maple buds get ready to bloom and end the season altogether.

Note: Observant readers will note that I can’t have a valid red-dashed moving average line for the March 6-11 end of the graph, because I would need data from March 12-17 in order to calculate it.  So just ignore this… I’ll post an update in April with the full month of data for March.

Quick Look at the Region:

Here’s a look at December temperatures across the US.  The top map is mean temperature: SE Michigan is running about 35, and it’s the expected cold-in-the-North pattern.  But it’s the second map below that shows what it means.  For each tiny point on the map, the colors indicate how much warmer or colder the area was in December compared to “normal” years (monthly mean temps).   In short high numbers (red and brownish colors) mean hotter than normal temperatures.  Roughly two thirds of the country had a hotter than normal December.  The Dakotas and Minnesota were about the hottest.

There are other maps for the other months, but this post is too long already.  Go look them up yourself in the links below.  Short story: we stayed hot.

Summary:

I think the best way to look at this winter so far is this:  Spring has been shifted backward nearly a month.  It’s mid March now, the peepers are peeping madly, the robins woke us up this morning, the crocuses are well displayed, and I got buzzed by a honey bee yesterday.  This is all a bit early for us.

On the plus side: the deer had an easy winter, and didn’t chew up our young fruit tree branches like usual.

On the flip side: the fruit trees might bud too early and get nipped by a “normal” frost (ie., if the fruit trees bud early, it doesn’t have to be a “late” frost to nip the buds.  Even a regular frost can do the job.

There’s probably fifty plus and minuses we could do here, but I’m done.

Enjoy the nice weather.

Postscript:

As I post this it’s March 13, and we’re clearly in a very warm spell that will kill our maple season.  No freezes since last Friday, none in the forecast.  So the maple sap run will definitely be over for us… hope you got started early this year (our maples started dripping in late January! we got tapped on February 4, two weeks earlier than ever for Dragonwood).  I’ll follow up with a full March report later, in April.  Remind me if you don’t see it.

Oh!  And don’t forget if you haven’t been there, the USDA released their new Plant Hardiness Map a few weeks ago (here’s a write-up about it from Mother Jones), and it’s interactive this time, click to get your own state map.  Our farm?  Surprise!  We’ve moved from Zone 5 to Zone 6 (a more southern, warmer zone).  Here’s the direct link to the map at the USDA.

Data Reference Links:

1. US Temperature Anomaly Map (from NOAA):
http://www.cpc.ncep.noaa.gov/products/tanal/temp_analyses.php

2. Monthly Climate Report For DTW Airport, Detroit (by NOAA; 12 months available):
http://forecast.weather.gov/product.php?site=NWS&issuedby=DTW&product=CLM&format=CI&version=1&glossary=0

3. Seasonal Weather Averages Plot (available for many localities, from Weather Underground):
http://www.wunderground.com/NORMS/DisplayNORMS.asp?AirportCode=KDTW&SafeCityName=Southgate&StateCode=MI&Units=none&IATA=DTW&MR=1

4. History Data (Weather Underground) - really powerful ability to bring up nice graphs of the temperature and other weather facts for just about anywhere in the U.S., with customizable date ranges.  BETTER YET: at the bottom of each page is a tabular version of the data, and a link to get it all as CSV (comma separated variables) that you can plug into a spreadsheet, like Open Office (what I used):
http://www.wunderground.com/history/

5. Historical local daily averages and record high/low temps (NOAA) - this is for DTW Airport, but other places and other dates are available.  Look around:
http://www.crh.noaa.gov/dtx/display_climate.php?file=records_DTW_Dec_inc.htm

6. NOAA Climate data from all over the U.S. - this is the site that leads you to #5 above.  Just click an area on the map, then click the tab for “Local Data/Records” and follow links to the data you want.  Different areas have different kinds and amounts of data, depending on the local weather recording stations:
http://www.nws.noaa.gov/climate/

It’s not really Dragonwood’s first ground-coating snow of the season… but we missed the first one, being away on visits.  So it’s OUR first snow, and it didn’t arrive until after Christmas!

So, to celebrate my morning walk with birds and cats, here are the first snow footprints that I found this morning:

1. Unknown polydactyl cat print, front foot, five toes across the front.  Non-polydactyl cats normally have five toes on the front paw, but arranged as four across the pad and one behind, as a dew claw.  Gina and a couple other kitties here have five toes on the front, but arranged straight across the top like this one.

2. Sassy (aka Sasquatch), who came running through the snow to see me.  On the bottom is her front paw print, with seven toes, and on the top is her back paw, which has five toes (non-polys have four in the back).  It’s harder to see the fifth claw and matching pad, but they’re on the left of the main print and other toes.

Sassy has 24 toes altogether, tied for our local record holder.  You can only see six toes/claws on her front paw print here, arranged with four across the front and two out on a “thumb” (to the left, since this is her right paw)… the seventh claw has no pad, and grows neatly between the thumb-pair and the four-pad above, and curls under (rarely leaving a mark).

Also… Sassy seldom retracts her claws, and we’ve never known her to do so while she walks.  Normally cats retract their claws, leaving a distinctly different pawprint (like #1 above) from their friends like dogs and raccoons (always show claws in their prints).  But Sassy walks on her claws, whether in the snow or on our hardwood floors… you can always hear her click clacking along in the night.

3. The turkey.  Our Tom greets me every morning, and on a morning like this it’s easy to see where he’s been exploring before I get out to greet him in return.  Tom is now 2-1/2 years old.

I shoulda shot the chicken prints too, I suppose.  And the juncos flitting around the kitchen garden’s remains.  But this isn’t a documentary, it’s a celebration.  It snowed!  Yay!

Sorry, it’s just been so long since I posted anything at all, that I thought I’d just post this photo I took this morning with my new phone.  The morning sun on the sage caught my eye, and since the best camera is the one you have with you, you get to see what I saw.  The chickens had to wait a couple minutes more to get out to pasture, but them’s the breaks.  You don’t get much from this tiny view… click through to see it bigger (along with the spotty beetle adding color).

It’s not consolation, but taking the photo and posting it helps a little with something else I had to do this morning.  Boy George died last night, and I buried him this morning.  He was a wonderful friend, and I miss him.  I’ll repost this photo of him, as a little memorial to the way he loved to curl up with you. Sniff.

Goodbye, Boy.

We spent most of yesterday in the gardens, digging out grasses, planting out lettuces, readying other beds for more of the same. Two tables in the living room are taken up with sprouts under grow lights, and the porch overflows. Conservatively Mandy has 5000 plants growing in pots and/or already planted out.

It is so nice now to be eating fresh greens every day, and sometimes at two meals a day already. Fried eggs on a bed of baby greens, mmmm.

Coldframe littuces getting some fresh air. Missing ones in the middle have been planted out in the new bed, top left.

Two days ago I found Mandy planting out some rows of 3-4″ tall deer’s tongue lettuce… I didn’t recognize them from the sprouts she’d been growing. Instead, these had been planted as seed last fall outside and then covered with a cold frame… a small garden spot about 3′ by 3′ with a hay bale back end, bricks and hay sides, and a south-facing 50-year old wooden window frame to make a tiny greenhouse. All winter the lettuces sat there mulling things over, and in the past two months of slow spring they came out of hibernation. Now they’re so crowded that she took out just two handfuls and filled rows of lettuce sprouts ready to grow big and strong.

And much more to do in the garden.  Mmmmm.  Recently we’ve been doing a lot, as is our wont in April, weather and circumstances permitting.

Red, red newbarb.

There’s rhubarb to discover under the leaves, to expose and (for some of them) to cover under ceramic pots.  We get nice long juicy stalks with less energy going into making big big leaves.  The first of the season though (the newbarbs) are just so red and beautiful and luscious.  Rhubarb custard does not last long around here.  Very nice with coffee for first breakfast (before the eggs and greens).

Last week, not in our gardens but a few steps away in the hens’ free-range territory, I found a patch of white tucked away in the barbs of the black raspberry patch.  We hadn’t seen it before, but there it was, a nice patch of Bloodroot flowers.  I haven’t tried breaking off a stem to see the reddish juices inside.  They’re just too nice.  And the hens have completely ignored them, it seems to me.  They might know something I don’t about bloodroot’s flavor (or perhaps the aftereffects).

And finally, inside, we find Sassy expressing her innermost desire for the high diving board.  Nearly every day she finds a comfy spot and assumes a near-10 quality tuck position in her sleep, dreaming of her splash-free pool entry at the bottom.  May we all have such dreams to tuck into as we sleep.

Diver cat, tuck position.

I’m ready to see some green.  The other night while I was starting some more seeds and caring for those that have already emerged, I glanced up at the kitty keeping me company and realized her eyes were the same green tone as the young celery.  Worthy of a quick pic, a quick post, a quick share of a sneak peek at spring!