timchueyweather4u.com » Blog Archiv » Be careful out there! Today will be Hot and it won’t cool off very much for your Sunday. The safest time for outdoor activity will be early in the morning and just before sunset. Remember to drink plenty of fluids.

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Aug

04.

Be careful out there! Today will be Hot and it won’t cool off very much for your Sunday. The safest time for outdoor activity will be early in the morning and just before sunset. Remember to drink plenty of fluids.

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Sorry, no winner this week. Here is my weekly weather quiz question for the last time. Define “Aurora Australis.” Here is the correct answer. The aurora australis (or the southern lights) is the southern counterpart and has almost identical features to the aurora borealis which is a natural light display in the sky particularly in the high latitude (Arctic and Antarctic) regions, caused by the collision of energetic charged particles with atoms in the high altitude atmosphere (thermosphere). The charged particles originate in the magnetosphere and solar wind and, on Earth, are directed by the Earth’s magnetic field into the atmosphere. Aurora is classified as diffuse or discrete aurora. Most aurorae occur in a band known as the auroral zone,^[1]^[2] which is typically 3° to 6° in latitudinal extent and at all local times or longitudes.and changes simultaneously with changes in the northern auroral zone^[7] and is visible from high southern latitudes in Antarctica, South America, New Zealand, and Australia. I’ll have another weekly weather quiz question for you starting next Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count.

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Advisories: A HEAT ADVISORY IS IN EFFECT FROM NOON UNTIL 9 PM TODAY FOR THE NORTH AND CENTRAL OREGON COAST, THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE I-5 CORRIDOR FROM PORTLAND THROUGH EUGENE/SPRINGFIELD AND WEST TO FLORENCE AND SOUTH TO COTTAGE GROVE, THE WESTERN COLUMBIA RIVER GORGE, THE NORTH OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, AND THE UPPER HOOD RIVER VALLEY.

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Curiosity, NASA’s newest Mars Science Laboratory spacecraft, will be setting down on the surface of Mars at about 10:31 PM PDT Sunday. The event will be streamed live on the web and will be broadcast on NASA TV.

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An upper air trough of low pressure (“U” shape on the orange line) pushed eastward away from us as high pressure (“Arch” shape on the orange line) moved over us and switched the onshore airflow to offshore allowing high temperatures to increase to hot for rest of the weekend. A thermal trough of low pressure will stay over the coast and coast range mountains aiding the warming process and helping to produce thunderstorms as it moves to the east.

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The pollen count for the Eugene-Springfield area is:

Grass- (barely) Moderate (5) (Observation: The grass pollen season is over.) Trees- Low (2) This report from 7/26/12, waiting for a new update.

Data from Oregon Allergy Associates www.oregonallergyassociates.com.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Sunny and hot today, mostly clear tonight, mostly sunny Sunday AM, partly cloudy and still very warm in the afternoon, partly cloudy with a slight (20%) chance of thunderstorms Sunday night, partly cloudy Monday AM, mostly sunny in the afternoon, partly cloudy in the evening, then mostly cloudy Monday night highs 98-89 lows 58-55. Partly cloudy Tuesday AM, mostly sunny in the afternoon, mostly clear in the evening, mostly cloudy Tuesday night and Wednesday AM, a mix of clouds and sun Wednesday afternoon, partly cloudy in the evening, mostly cloudy Wednesday night and Thursday AM, then mostly sunny Thursday afternoon, partly cloudy Thursday night and Friday AM, then mostly sunny Friday afternoon highs 83-80 warming to 83 Friday lows near 52. (seasonal averages high 84 low 52)

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Forecast for the Umpqua Basin including Roseburg: Sunny and hot today, partly cloudy with a slight (20%) chance of isolated thunderstorms late tonight, mostly cloudy with a slight (20%) chance of isolated thunderstorms Sunday, partly cloudy with a slight (20%) chance of thunderstorms in the evening, then mostly cloudy late Sunday night and Monday AM, mostly sunny in the afternoon, then partly cloudy Monday night highs 100-86 lows 64-56. Partly cloudy Tuesday through Wednesday evening, mostly cloudy Wednesday night and Thursday AM, mostly sunny Thursday afternoon, mostly clear in the evening, partly cloudy Thursday night and Friday AM, then sunny again Friday afternoon highs 84-88 cooling to 83 Thursday lows 56-54. (seasonal averages high 86 low 57)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy with patchy coastal fog this AM, sunny with patchy lingering fog this afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of inland thunderstorms tonight with a slight (20%) chance of coastal thunderstorms late tonight, mostly cloudy with patchy coastal fog and a slight (20%) chance of inland thunderstorms Sunday, then mostly cloudy with isolated thunderstorms Sunday night, mostly cloudy Monday AM, partly cloudy in the afternoon, then mostly cloudy Monday night highs 74-63 lows 57-54. Mostly cloudy Tuesday through Friday AM, then sunny Friday afternoon highs 64-67 lows near 55. (seasonal averages high 65 low 53).

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Forecast for the Cascades of Lane County: Sunny and warmer today, partly cloudy tonight, mostly sunny Sunday AM, a mix of clouds and sun with a slight (20%) chance of thunderstorms Sunday afternoon and evening, partly cloudy with a slight (20%) chance of thunderstorms late Sunday night, then partly cloudy with a slight (20%) chance of thunderstorms Monday and Monday night free air freezing level 16,000 ft. today and tonight, 15,000 ft. Sunday, 14,000 ft. Sunday night through Monday night highs 85-76 lows 54-46. Mostly sunny Tuesday AM, partly cloudy in the afternoon, partly cloudy with a slight (20%) chance of showers late Tuesday night and Wednesday AM, partly cloudy in the afternoon through Thursday AM, mostly sunny Thursday afternoon and Friday with mostly clear skies Thursday night free air freezing level 14,000 ft. Tuesday, snow level above 8,000 ft. Tuesday night and Wednesday, then freezing level 14,000 ft. Wednesday night through Friday highs 75-70 warming to 75 Friday lows near 46.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

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