Weather

StormTracker blog

Saturday Night Still a chance of shower or Thundershower in Lakes Country, otherwise Slowly clearing from the West. Some Clouds Sunday Morning Especially in Minnesota but it should turn into a Mostly Sunny day with a wind out of the Northwest at 10-20 mph. Warm and Windy again by Tuesday with a chance of storms Tuesday Night into Wednesday. Some uncertainty in the Forecast for late in the week, one scenario brings in Hot Weather while the other keeps it cooler than Average. I've gone in the middle and will try and pick warm or cold on Sunday's Forecast. Rob Kupec

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May 19, 2012

Temperature   Observed Time Record Year Normal Normal Departure Last Year High 74° 1218 AM 93° 1992 70° 4° 78° Low 49° 1159 PM 29° 2002 46° 3° 50° Average 62°       58° 4° 64°
Precipitation   Observed Record Year Normal Normal Departure Last Year Precipitation T 1.02 1950 0.10 -0.10 0.00 Month to Date 0.28 1.62     -1.34 1.97 SINCE MAR 1 2.16 4.31     -2.15 5.83 Since Jan. 1 3.69 5.62     -1.93 6.81
Snow   Observed Record Year Normal Normal Departure Last Year Snowfall 0.0 0.1 1907 0.0 0.0 Month to Date 0.0     0.0 0.0 SINCE MAR 1 2.6     2.4 9.8 SINCE JUL 1 27.0     0.4 3.4 Snow Depth
Degree Days Heating   Observed Normal Normal Departure Last Year Heating 3 8 -5 1 Month to Date 92 199 -107 230 SINCE MAR 1 1314 1977 -663 2271 SINCE JUL 1 6741 8655 -1914 9174
Degree Days Cooling   Observed Normal Normal Departure Last Year Cooling 0 1 -1 0 Month to Date 36 15 21 0 SINCE MAR 1 42 18 24 0 SINCE JAN 1 42 18 24 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: 0.5 Conditions NO SIGNIFICANT WEATHER WAS OBSERVED.	Climate Normals for Today   Average Record Year Temperature High 71° 91° 1955 Temperature Low 46° 25° 1969     May 20 2012 Sunrise 546 AM CDT Sunset 902 PM CDT May 21 2012 Sunrise 545 AM CDT Sunset 903 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.