...Unusually Warm Temperatures...

 Temperatures have been warmer than normal throughout much of the United States this year and the Upper Peninsula is no exception.  One of the major contributors to these above normal temperatures is the exceptionally warm start to the year with March temperatures reaching into the low and mid 70s across the Upper Peninsuala.  Low Temperatures during that time period were much warmer than normal as well, with a few of the overnight lows remaining warmer than the record high temperatures for the day. Take a look at the graph below, created by NOAA's National Climatic Data Center, to see how the year has trended through November.

 

 

This fall has been unusually warm as well, especially with respect to the overnight low temperatures.  When analyzing the overnight low temperatures from 1960 through the current date, we were tied with the record most consecutive days with minimum temperatures greater than or equal to 10 degrees as of 12/10/12.  This streak continued through 12/11/12, which then set a new record for overnight lows greater than or equal to 10 degrees.  Unfortunately a brisk start to the day on Wednesday 12/12/12 brought an end to this streak, with a morning low of 2 degrees here at the NWS office. Since then the temps have jumped back up to well above normal, with lows temperatures rivaling the normal daytime highs for this time of yearTake a look at the chart below to see how this stacks up with the previous extended "warm" periods.  To find out more about the warm temperatures for this fall and for the year please take a look at the State of the Climate.

 

Ranking

Number of Days

Streak End Date

1

277

12/11/2012

2

276

12/15/1999

3

274

12/25/2001

4

268

12/16/1998

5

261

12/07/1988

6

260

12/05/2009

7

260

12/01/2006

8

255

12/16/1968

9

250

12/12/1990

10

250

11/21/1981

 

Another interesting statistic is that the National Weather Service has now officially exceeded the record for days with high temperatures greater than 32 degrees in a single year.  As of 12/16/2012, there were 292 days with high temperatures above 32 degrees. We will likely exceed the total number by more than just the one day shown, as high temperatures may again reach reach into the mid 30s over the next couple of days.  To see the rankings take a look at the following chart:

Ranking

Number of Days

Dates of Occurrence

1

292

2012

2

291

1987,1999

3

289

1990,1998

4

283

2006

5

281

1981,1984

6

280

2010

7

279

2001

8

277

1994

9

273

1988

 



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