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StormTracker blog

Good evening. Looks like it is going to be a beautiful evening. Temperatures will cool off quickly tonight. Lows near 45* The wind will be light out of the Southeast at 5-15 mph. Friday will be turning cloudy with some showers moving into the Red River Valley either late afternoon or during the evening hours. Some hit and miss showers and thunderstorms this weekend with high temperatures most days close to 70*.

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March 10, 2013

Temperature   Observed Time Record Year Normal Normal Departure Last Year High 25° 1210 AM 58° 1911 33° -8° 50° Low 3° 1159 PM -34° 1948 17° -14° 28° Average 14°       25° -11° 39°
Precipitation   Observed Record Year Normal Normal Departure Last Year Precipitation T 0.65 2010 0.04 -0.04 0.00 Month to Date 0.57 0.39     0.18 0.08 SINCE MAR 1 0.57 0.39     0.18 0.08 Since Jan. 1 2.76 1.70     1.06 1.61
Snow   Observed Record Year Normal Normal Departure Last Year Snowfall 6.5 2009 0.4 0.4 Month to Date 5.6     3.6 2.0 SINCE MAR 1 5.6     3.6 2.0 SINCE JUL 1 42.7     1.6 1.1 Snow Depth
Degree Days Heating   Observed Normal Normal Departure Last Year Heating 51 40 11 26 Month to Date 444 425 19 421 SINCE MAR 1 444 425 19 421 SINCE JUL 1 7035 7103 -68 5848
Degree Days Cooling   Observed Normal Normal Departure Last Year Cooling 0 0 0 0 Month to Date 0 0 0 0 SINCE MAR 1 0 0 0 0 SINCE JAN 1 0 0 0 0
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: 0.6 Conditions LIGHT SNOW FOG HAZE	Climate Normals for Today   Average Record Year Temperature High 33° 59° 2012 Temperature Low 17° -28° 1948     March 11 2013 Sunrise 747 AM CDT Sunset 728 PM CDT March 12 2013 Sunrise 745 AM CDT Sunset 729 PM CDT
Source: National Weather Service Climate Report

Wind (mph)	Temperature (Fahrenheit)
0	35°	30°	25°	20°	15°	10°	5°	0°	-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.