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StormTracker blog

A few scattered high clouds this afternoon, but overall a very nice day. High near 88* with a southeast wind at 10-25 mph. Tonight will be mostly cloudy, with an isolated storm possible. Low near 65* with a southeast wind at 10-20 mph. Thursday will start out nice, but showers and storms will develop during the afternoon. Some severe storms are possible. Storm chances will continue through Sunday with highs in the low to middle 80s.

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March 25, 2013

Temperature   Observed Time Record Year Normal Normal Departure Last Year High 27° 421 PM 71° 1925 41° -14° 46° Low 10° 1159 PM -11° 1894 24° -14° 27° Average 19°       32° -13° 37°
Precipitation   Observed Record Year Normal Normal Departure Last Year Precipitation T 0.98 1927 0.04 -0.04 0.00 Month to Date 1.38 1.04     0.34 0.46 SINCE MAR 1 1.38 1.04     0.34 0.46 Since Jan. 1 3.57 2.35     1.22 1.99
Snow   Observed Record Year Normal Normal Departure Last Year Snowfall 0.1 1927 0.2 0.2 Month to Date 14.6     8.0 6.6 SINCE MAR 1 14.6     8.0 6.6 SINCE JUL 1 51.7     6.0 5.7 Snow Depth
Degree Days Heating   Observed Normal Normal Departure Last Year Heating 46 33 13 28 Month to Date 1235 969 266 613 SINCE MAR 1 1235 969 266 613 SINCE JUL 1 7826 7647 179 6040
Degree Days Cooling   Observed Normal Normal Departure Last Year Cooling 0 0 0 0 Month to Date 0 0 0 6 SINCE MAR 1 0 0 0 6 SINCE JAN 1 0 0 0 6
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: 0.5 Conditions LIGHT SNOW	Climate Normals for Today   Average Record Year Temperature High 42° 68° 1946 Temperature Low 24° -12° 1996     March 26 2013 Sunrise 718 AM CDT Sunset 749 PM CDT March 27 2013 Sunrise 716 AM CDT Sunset 750 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.