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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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November 30, 2012

Temperature   Observed Time Record Year Normal Normal Departure Last Year High 36° 1159 PM 53° 1990 28° 8° 36° Low 27° 837 AM -27° 1905 12° 15° 22° Average 32°       20° 12° 29°
Precipitation   Observed Record Year Normal Normal Departure Last Year Precipitation 0.00 0.54 1908 0.03 -0.03 0.02 Month to Date 0.59 1.00     -0.41 0.26 SINCE SEP 1 2.93 5.72     -2.79 1.43 Since Jan. 1 14.15 21.78     -7.63 23.59
Snow   Observed Record Year Normal Normal Departure Last Year Snowfall 0.0 5.0 1908 0.4 0.4 Month to Date 4.8     7.9 3.1 SINCE SEP 1 8.4     8.6 0.2 SINCE JUL 1 8.4     8.6 0.2 Snow Depth
Degree Days Heating   Observed Normal Normal Departure Last Year Heating 33 45 -12 36 Month to Date 1032 1086 -54 929 SINCE SEP 1 1891 1912 -21 1545 SINCE JUL 1 1909 1962 -53 1546
Degree Days Cooling   Observed Normal Normal Departure Last Year Cooling 0 0 0 0 Month to Date 0 0 0 0 SINCE SEP 1 50 46 4 95 SINCE JAN 1 795 551 244 694
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: 1.0 Conditions FOG HAZE	Climate Normals for Today   Average Record Year Temperature High 28° 57° 1962 Temperature Low 12° -27° 1896     December 01 2012 Sunrise 752 AM CST Sunset 440 PM CST December 02 2012 Sunrise 754 AM CST Sunset 440 PM CST
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.