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StormTracker blog

Scattered thunderstorms will continue to move east this morning, but more storms will develop later this afternoon. Some of those storms could become severe. High near 86* with a southeast wind at 10-25 mph. Tonight, thunderstorms with heavy rainfall possible. Low near 67* with a southeast wind at 5-15 mph. Storm chances continue through Saturday with severe weather possible as well. We'll dry out for the end of the weekend, but more storms are possible next week. Stay tuned for updates throughout the day on the severe weather potential.

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July 24, 2012

Temperature   Observed Time Record Year Normal Normal Departure Last Year High 89° 422 PM 99° 1940 83° 6° 82° Low 65° 525 AM 44° 1891 60° 5° 58° Average 77°       72° 5° 70°
Precipitation   Observed Record Year Normal Normal Departure Last Year Precipitation 2.35 1.05 1993 0.07 2.28 T Month to Date 2.80 2.28     0.52 4.10 SINCE JUN 1 5.30 6.18     -0.88 8.51 Since Jan. 1 10.22 12.99     -2.77 17.65
Snow   Observed Record Year Normal Normal Departure Last Year Snowfall 0.0 0.0 0.0 0.0 Month to Date 0.0     0.0 0.0 SINCE JUN 1 0.0     0.0 0.0 SINCE JUL 1 0.0     0.0 0.0 Snow Depth
Degree Days Heating   Observed Normal Normal Departure Last Year Heating 0 0 0 0 Month to Date 0 12 -12 0 SINCE JUN 1 20 85 -65 48 SINCE JUL 1 0 12 -12 0
Degree Days Cooling   Observed Normal Normal Departure Last Year Cooling 12 7 5 5 Month to Date 307 158 149 235 SINCE JUN 1 481 265 216 343 SINCE JAN 1 539 296 243 348
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: 0.2 Conditions HEAVY RAIN LIGHT RAIN FOG FOG W/VISIBILITY <= 1/4 MILE	Climate Normals for Today   Average Record Year Temperature High 83° 105° 1931 Temperature Low 60° 46° 1900     July 25 2012 Sunrise 559 AM CDT Sunset 908 PM CDT July 26 2012 Sunrise 600 AM CDT Sunset 906 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.