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Amir Mohsen

متخصص بخش هواشناسی
[h=2]First Snowstorm of Season Brewing: South Dakota to Minnesota
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[h=6]By Courtney Spamer, Meteorologist [h=5]October 01, 2013; 2:10 PM
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Click the above video for a detailed forecast for the north-central United States.
The storm recently responsible for heavy rain in the Northwest will take aim at the northern Plains and perhaps the Upper Midwest, bringing not only the first snowfall of the season, but also the potential for a major storm.
Dry, tranquil weather over the Central states now will not hold through the end of the week.
Lingering warmth, colliding with a push of cold air from Canada and moisture will bring snow, rain and perhaps a severe weather outbreak.
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Cold air will wrap in behind the reorganizing storm across Montana, Wyoming and northern Colorado. The snow will fall on some areas hit by heavy snow last week. Heavy snowfall may be not limited to the higher elevations but could reach lower elevations in the region.
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The storm will strengthen greatly over the northern Plains. As this happens, rain will become mixed with and change to snow in some locations.
Heavy snow could fall with gusty winds, from the Black Hills of South Dakota. Accumulating snow could reach eastward from the Black Hills to perhaps as far northeast as northern Minnesota. Travel along I-90 in South Dakota could be especially difficult late in the week if the storm develops to its full potential.
According to AccuWeather.com Winter Weather Expert Brian Wimer, "It would have to snow very hard over the northern Plains, away from the hills and mountains for an accumulations, but there is a chance of that at this point."
Accumulating snow may reach just north and west of Denver, Colo. Snow is likely in Cheyenne, Wyo.
If even a mere inch of snow falls in northern Minnesota, it would be unusual for the first week in October. The average first measurable snowfall in Duluth, Minn., is not until Oct. 24.
Measurable snow would not be unprecedented, however. The earliest measurable snow for a season in Duluth occurred on Sept. 18, 1991.
Across Colorado, some ski resorts are taking advantage of the cool weather and are already making snow. In preparation for the 2013-14 ski season, Loveland Ski Area and Arapahoe Basin Ski Area plan to make snow for as long as conditions allow, according to a press release by Colorado Ski Country USA (CSCUSA).
 

Amir Mohsen

متخصص بخش هواشناسی
[h=2]Japan, South Korea to Face Dangerous Typhoon
[h=6]By Eric Leister, Meteorologist [h=5]October 01, 2013; 2:06 PM
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The above video details the weather across Asia.
Tropical Depression 22W formed east of the Philippines on Monday and quickly become Tropical Storm Fitow.
Warm ocean waters along with low wind shear will allow Tropical Storm Fitow to continue to strengthen over the next several days as it tracks generally to the north and northwest.
The favorable environment will lead to Fitow becoming a typhoon by as early as Wednesday morning. Even after achieving typhoon strength Fitow will continue to strengthen and become a more dangerous storm later this week as it approaches the Ryukyu Islands, southern Japan and the Korean Peninsula.
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The effects from Fitow can be life-threatening later this week for all areas impacted by the storm. Across the Ryukyu Islands, heavy rainfall and damaging winds will be possible. In southern Japan, flooding and mudslides are expected to be the greatest threats.
South Korea could be dealt a direct blow from the storm leading to flooding rainfall, damaging winds and mudslides. The current track of the storm is expected to take the center over the northern Ryukyu Islands later Friday into Saturday then lead to a final approach on South Korea Sunday into Sunday night.
RELATED:
Japan Weather
AccuWeather Severe Weather Center
AccuWeather Hurricane Center

High pressure north of Japan will determine how far north Fitow goes before turning northwest. A weaker high pressure will allow the storm to move farther north, resulting in a possible landfall in southern Japan, while a strong high will turn the storm quicker causing it to pass through the Ryukyu Islands and toward the Korean Peninsula.
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Satellite image of Tropical Depression 22W to the east of the Philippines on Monday, courtesy of UW-CIMSS.
If the storm tracks into southern Japan, it would likely weaken as it interacts with the rugged terrain, but also bring the threat for deadly flooding and mudslides along with damaging winds near the coast.
If a track farther south unfolds, then only minimal weakening would be expected as Fitow tracks over the Ryukyu Islands and targets the Korean Peninsula and northeast China.
This would result in some flooding and mudslide threat across Japan as moisture is pulled into these areas, but the heaviest rainfall and greatest threat for flooding would be closer to the center of the storm track.
 

محمد بجنورد

کاربر ويژه
درود بر دوستان عزیز

از امیرمحسن عزیز کمال تشکر رو دارم،واقعا ی نفری فروم رو میچرخونن و اطلاعات بسیار گرانمایه ای رو واسمون میذارن،ایول دارید بخدا:گل::احترام:،امیدوارم روزی برسه ک بتونیم این همه زحمات ایشون رو جبران کنیم:خجالت2:
 

Amir Mohsen

متخصص بخش هواشناسی
درود دوستان عزیز

همین حالا که نقشه های تراز 850 میلی بار نیروی دریایی رو چک کردم و اون رو با اطلاعات سوندینگ فرودگاه مشهد چک کردم بنظر میرسه بامداد چهارشنبه هفته آینده لحظات نسبتا سردی رو در منطقه شمال شرق و از جمله مشهد تجربه کنیم ، هر چند که رطوبت سطح زمین هم به نسبت بالا خواهد بود:

اطلاعات سوندینگ بامداد امروز مشهد :

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همانطوریکه در یالا مشاهد میکنید در تراز 905 میلی بار که میشه برابر با ارتفاع فرودگاه شهر مشهد( 990 متر)، دمای هوا به 14.6 درجه سانتیگراد بالای صفر رسیده و بصورت همزمان دمای هوا در تراز 850 میلی بار که میشه ارتفاع 1594 متر از سطح دریا دمای هوا به 14.8 درجه سانتیگراد رسیده( البته شب گذشته ما استقرار سامانه پر فشار رو در سطح زمین داشتیم.


نقشه رطوبت- ارتفاع-جهت وزش باد درتراز 850 میلی بار برای بامداد چهارشنبه هفته آینده:


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در نقشه بالا دمای 6 درجه سانتیگراد بالای صفر در تراز 850 میلی بار برای بامداد چهارشنبه در منطقه مشهد و قوچان پیش بینی شده که میشه امیدوار شد دمای هوا در نواحی سردسیر به صفر درجه و یا شاید کمتر هم برسه و برای شهر مشهد خصوصا نواحی غربی کاهش دما بسیار محسوس خواهد بود و این موضوع رو به ما یاد آوری خواهد کرد که در نیمه اولین ماه از فصل پاییز هستیم.
 

محمد بجنورد

کاربر ويژه


تو زمستون اینجور باشه بهتره.

درود علیرضاجان

بابا چرا اینقدر مینالی؟؟؟چندروزه ک داری پست هایی با محتوای ناشکری میزنی!!!:زبون:،به هیچ وجه صدق نمیکنه ک پاییز پربارش باشه؛زمستان کم بارش میشه و یا برعکس،مگه پاییز 90 رو یادت نیست داداش،چه بارندگی داشتین،زمستونش هم ک خوب بود دیگه،کو تا زمستون!!!خدا بزرگه،فعلا همین بارش هایی ک دارین رو سپاسگزار بالایی باشین؛زمستون هم خدا کریمه...

از قدیم هم گفتن:سالی ک نکوست از پاییزش پیداست!!!:زبون:
 

havashenas

کاربر ويژه
سلام دوستان اميدوارم حالتون خوب باشه.
صبح سه شنبه تكاب 1 درجه شد و صبح امروز شد 2 درجه و فوركا 5 و 7درجه پيشبيني كرده بود يعني 4 و 5 درجه اختلاف و حالا براي روز دوشنبه دماي منفي 3 و سه شنبه دماي منفي 4 و چهارشنبه منفي 3 پيشبيني كرده حالا اگه همين اختلاف حفظ بشه تكاب بامداد سه شنبه زير 8 درجه يا بيشتر ميشتونه برسه!!!!!
:تعجب2:
 
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