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Conditions: Overcast
Temp: 29°
Wind: East 15
Pressure: 0
Dewpoint: 12°
Relative Humidity: 49

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Seven Day Forecast

Tonight the clouds will continue to roll in. Low near 25*, with an east wind at 10-20 mph. Light snow will develop into the morning. Some areas could see accumulations of less than an inch, with higher amounts further to the southeast towards the Twin Cities. High of 36* with a east wind becoming northeast at 20-30 mph.

The rest of this week should remain mostly dry. However on Saturday there is a chance to see some rain showers. Highs will return to mild conditions. Warmer air will surge in for the weekend. Expect highs this weekend back into the 60's, and could continue into next week.

-Meteorologist John Wheeler


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CURRENT CONDITIONS FROM NOAA
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This is the view looking north from the WDAZ studio at 2220 South Washington in Grand Forks, ND.

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Weather Key:
  indicates negative numbers
R  indicates record was set or tied
MM  indicates data missing
T  indicates trace amount

December 15, 2012

Temperature

  Observed Time Record Year Normal Normal Departure Last Year
High 23° 243 PM 42° 1997 20° 31°
Low 1227 AM -21° 1975 11°
Average 16°       11° 21°

Precipitation

  Observed Record Year Normal Normal Departure Last Year
Precipitation T 0.25 1964 0.02 -0.02 T
Month to Date 0.20 0.29     -0.09 T
SINCE DEC 1 0.20 0.29     -0.09 T
Since Jan. 1 16.97 20.49     -3.52 19.07

Snow

  Observed Record Year Normal Normal Departure Last Year
Snowfall 2.5 1964 0.4 0.4
Month to Date 2.1     5.0 2.9
SINCE DEC 1 2.1     5.0 2.9
SINCE JUL 1 11.8     4.2 2.4
Snow Depth          

Degree Days Heating

  Observed Normal Normal Departure Last Year
Heating 49 54 -5 44
Month to Date 718 765 -47 675
SINCE DEC 1 718 765 -47 675
SINCE JUL 1 2846 2964 -118 2368

Degree Days Cooling

  Observed Normal Normal Departure Last Year
Cooling 0 0 0 0
Month to Date 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 572 379 193 538

Wind

  Observed
Highest Speed 3
Highest Direction 3
Highest Gust Speed 3
Highest Guest Direction 3

Relative Humidity

  Observed Time
Highest 3 3
Lowest 3 3
Average 3  

Forecast

Skycover POSSIBLE SUNSHINE: MM
AVERAGE SKY COVER: 0.8
Conditions LIGHT SNOW
FOG
FOG W/VISIBILITY <= 1/4 MILE

Climate Normals for Today

  Average Record Year
Temperature High 20° 52° 1962
Temperature Low -22° 1953
   
December 16 2012
Sunrise 813 AM CST
Sunset 436 PM CST
December 17 2012
Sunrise 813 AM CST
Sunset 437 PM CST

Source: National Weather Service Climate Report

Wind
(mph)
Temperature (Fahrenheit)
0 35° 30° 25° 20° 15° 10° -5° -10° -15° -20° -25° -30° -35° -40° -45°
5 31 25 9 13 7 -1 -5 -11 -16 -22 -28 -34 -40 -46 -52 -57 -72
10 27 21 15 9 3 -4 -10 -16 -22 -28 -35 -41 -47 -53 -59 -66 -77
15 25 19 13 6 0 -7 -13 -19 -26 -35 -39 -45 -51 -58 -64 -71 -81
20 24 17 11 4 -2 -9 -15 -22 -29 -35 -37 -44 -55 -61 -68 -74 -84
25 23 16 9 3 -4 -11 -17 -24 -31 -37 -44 -51 -58 -64 -71 -78 -87
30 22 15 8 1 -5 -12 -19 -26 -33 -39 -46 -53 -60 -67 -73 -80 -89
35 21 14 7 0 -7 -14 -21 -28 -34 -41 -48 -55 -62 -69 -76 -82 -91
40 20 13 6 -1 -8 -15 -22 -29 -36 -43 -50 -57 -64 -71 -78 -84 -93
45 19 12 5 -2 -9 -16 -23 -30 -37 -44 -51 -58 -65 -72 -79 -86 -93
50 19 12 4 -3 -10 -17 -24 -31 -38 -45 -52 -60 -67 -74 -81 -89 -95
55 18 11 4 -3 -11 -18 -25 -32 -39 -46 -54 -61 -68 -75 -82 -89 -97
60 17 10 3 -4 -11 -19 -26 -33 -40 -48 -55 -62 -69 -76 -84 -91 -98

     Increasing Danger (Frostbite in 30 min.)
     Heightened Danger (Frostbite in 10 min.)
     Great Danger (Frostbite in 5 min.)

Differences Between the new and old systems

  • Wind speed is now calculated for 5 feet off the ground. Wind speed was previously based on observations at 33 feet.
  • The calm wind threshold was lowered to 3mph.
  • A consistent standard for skin tissue resistance is now in use.
  • Measurements are based on how wind affects the human face, typically the most exposed portion of the body.
  • The table incorporates the theory that heat is lost from the body depending on its surroundings
  • The sun's impact is not factored into the wind chill temperature formula.