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توجه: در صورتی که از کاربران قدیمی ایران انجمن هستید و امکان ورود به سایت را ندارید، میتوانید با آیدی altin_admin@ در تلگرام تماس حاصل نمایید.
مباحث عمومی هواشناسی
- شروع کننده موضوع Amir Mohsen
- تاریخ شروع
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Amir Masoud
کاربر ويژه
عجب گرم بود امروز اردبیل ، خیلی عجیب بود !
Amir Masoud
کاربر ويژه
عجب جای بهشتی من میمی ی ی ی ی ی ی ی ی رم واسه اینجور جاها
Amir Masoud
کاربر ويژه
بیشینه امروز
آی اردبیل کجا رفتی!!!
آی اردبیل کجا رفتی!!!
Amir Masoud
کاربر ويژه
با وجود اینکه بیشیه به 34 درجه رسید ولی سری گرما آزاد میشه و الان هوای خنک و دلپذیری رو داریم اینجا
این خاصیت اقلیم این منطقه هست که سریع کاهش دما رخ میده و شب های تابستان انقدر سرد میشه که اغلب بدون شوفاژ نمیشه خوابید
این خاصیت اقلیم این منطقه هست که سریع کاهش دما رخ میده و شب های تابستان انقدر سرد میشه که اغلب بدون شوفاژ نمیشه خوابید
عمو هومن بیا تحویل بیگیر:خنده1:،دیگه شهرای دیگه رو نکوبونی ها :خنده2:
[MENTION=24669]پسرخاله[/MENTION]
Qazvin
[h=4]Current conditions +33 °C
2 m/s
Clear
Feels Like: +33°
Barometer: 1007.0 hPa
Dewpoint: +6°
Humidity: 18.5%
Visibility: 10 km
----------------------------------------
Karaj
[h=4]Current conditions +34 °C
6 m/s
Clear
Feels Like: +34°
Barometer: 1006.0 hPa
Dewpoint: +6°
Humidity: 17.5%
Visibility: 10 km
-----------------------
Tehran
[h=4]Current conditions +35 °C
7 m/s
Feels Like: +35°
Barometer: 994.6 hPa
Dewpoint: -4°
Humidity: 8%
Visibility: 10 km
------------------------
Zanjan
[h=4]Current conditions +34 °C
Feels Like: +34°
Barometer: 996.8 hPa
Dewpoint: +4°
Humidity: 15.3%
Visibility: 15 km
[MENTION=24669]پسرخاله[/MENTION]
Qazvin
[h=4]Current conditions +33 °C
Clear
Feels Like: +33°
Barometer: 1007.0 hPa
Dewpoint: +6°
Humidity: 18.5%
Visibility: 10 km
----------------------------------------
Karaj
[h=4]Current conditions +34 °C
Clear
Feels Like: +34°
Barometer: 1006.0 hPa
Dewpoint: +6°
Humidity: 17.5%
Visibility: 10 km
-----------------------
Tehran
[h=4]Current conditions +35 °C
Feels Like: +35°
Barometer: 994.6 hPa
Dewpoint: -4°
Humidity: 8%
Visibility: 10 km
------------------------
Zanjan
[h=4]Current conditions +34 °C
Feels Like: +34°
Barometer: 996.8 hPa
Dewpoint: +4°
Humidity: 15.3%
Visibility: 15 km
Mohammad-rasht
کاربر ويژه
درود بر دوستان
امروز واقعا وحشتناک بود.
همین الان که دمای هوا کاهش پیدا کرده و به 31 رسیده،اما دمای حسی 35 هست!
از فردا هوا خنک می شه و به حالت عادی این موقع بر می گرده.چهارشنبه و پنجشنبه هم ممکنه مقداری بارش نصبمون بشه.
امروز واقعا وحشتناک بود.
همین الان که دمای هوا کاهش پیدا کرده و به 31 رسیده،اما دمای حسی 35 هست!
از فردا هوا خنک می شه و به حالت عادی این موقع بر می گرده.چهارشنبه و پنجشنبه هم ممکنه مقداری بارش نصبمون بشه.
درود بر بزرگ مرد تی شرت فروش :دی
آقا کاره پر فشار هست این خنکی دمای چهارشنبه پنجشنبه؟
Mohammad-rasht
کاربر ويژه
navid-mashhad
کاربر ويژه
ماشالا آبادان 49 درجه !!!
navid-mashhad
کاربر ويژه
20:30
مشهد 28+
قوچان 25+
مشهد 28+
قوچان 25+
Amir Mohsen
متخصص بخش هواشناسی
درود دوستان عزیز
امروز بعدازظهر واسه تهیه آب معدنی به قره سو رفتم و خیلی جالب بود که اونجا چند نوبتی رگبارهای پراکنده و زودگذر باران رخ داد.:گل:
یک مطلبی در نقشه ها توجهم رو بسیار معطوف کرده خصوصا نقشه های ارتفاع در تراز 700 میلی بار و در این تراز دائما در سطح کشور ناوه شمالی داریم که اجازه نفوذ زبانه پر فشار عربی ( جنب حاره ای) رو به کشور نمیده.
مثل این نقشه:
حالا میخواستم نظر اساتید عزیز و متخصصان مجرب انجمن مون رو در این خصوص بدونم :گل:
امروز بعدازظهر واسه تهیه آب معدنی به قره سو رفتم و خیلی جالب بود که اونجا چند نوبتی رگبارهای پراکنده و زودگذر باران رخ داد.:گل:
یک مطلبی در نقشه ها توجهم رو بسیار معطوف کرده خصوصا نقشه های ارتفاع در تراز 700 میلی بار و در این تراز دائما در سطح کشور ناوه شمالی داریم که اجازه نفوذ زبانه پر فشار عربی ( جنب حاره ای) رو به کشور نمیده.
مثل این نقشه:
حالا میخواستم نظر اساتید عزیز و متخصصان مجرب انجمن مون رو در این خصوص بدونم :گل:
Amir Mohsen
متخصص بخش هواشناسی
تو این تراز هر وقت پربند 3180 روی فلات ایران قرار بگیره یعنی غالب نقاط ایران تحت سیطره کامل پرفشار جنب حاره ای هست یک جورایی= کانتر 590 دکامتر در تراز 500 میلی بار!
Amir Mohsen
متخصص بخش هواشناسی
ادامه گرمای کشنده و احتمال وقوع آتش سوزی در غرب آمریکا
Deadly Heat Continues in West; Wildfire Danger High
By Andrew Freedman
Follow @afreedma
A punishing and deadly heat wave is roasting the Western U.S., toppling all-time high temperature records in a wide area extending from Arizona to the Pacific Northwest. On Sunday, Las Vegas tied its all-time mark with a high temperature of a sizzling 117°F, and the heat is expected to last at least through midweek.
Forecast atmospheric pressure departures from average (geopotential height anomalies) at about 18,000 feet for Tuesday, July 2. The red area shows the sprawling "heat dome" or area of higher than average pressure, across the West.
Credit: Weatherbell.com
The heat wave is affecting areas that are already coping with extreme drought conditions, and the hot and dry weather, combined with dry thunderstorms, has helped set off deadly wildfires — including the deadly Yarnell Hill fire in Arizona. That fire has destroyed at least 200 homes and led to the deaths of 19 specially-trained firefighters on Sunday, in the deadliest wildland firefighting event since 1933, when 29 firefighters were killed battling a blaze in Los Angeles.
The National Weather Service is warning that the heat, combined with more thunderstorms, may spark additional wildfires this week across the West, and may also contribute to extreme wildfire behavior, such as the conditions that overtook the firefighters.
The heat wave is threatening the all-time world-high temperature record of 134°F, set at Death Valley, Calif., in 1913. Forecasts show high temperatures flirting with 130-degrees there on Monday and Tuesday, but probably not reaching or exceeding the all-time mark. On June 30, the 129°F at Death Valley tied the record for the highest temperature on record there in the month of June. Records there extend back to 1911.
The heat wave is also making its presence known in national temperature statistics. During the June 24-29 period, there were 46 monthly high-temperature records set or tied in the U.S., along with 21 records for the highest overnight minimum temperature. During the same period there were 13 all-time high temperature records set or tied across the U.S., along with three all-time marks for the highest overnight low temperature. With more records set on June 30 and likely to come through July 4, the national numbers are bound to increase.
In Las Vegas, the National Weather Service called the 117°F on June 30, “The jackpot of Las Vegas record-high temperatures.” It was Las Vegas' highest temperature in the month of June, topping the old mark of 116°F set on June 15, 1940. Las Vegas also had its warmest June on record, with an average temperature of 91.5°F. Official records in Las Vegas date back to 1937.
Record-high temperatures have also been set in California’s Central Valley, Oregon, Washington, and Utah, among other states. For example, Sacramento, Calif., reached 107°F on Saturday, its daily high record. Other parts of the West are also roasting, with Salt Lake City seeing back-to-back days of the hottest temperature on record there, with highs on Friday and Saturday reaching 105°F.
At Needles, Calif., the 122°F on Sunday set a record for the first time that location has ever had three straight days of 120°F or greater heat in the month of June. The previous day, Needles reached a high of 123°F, which broke its all-time mark for the month of June. Records for Needles date back to 1888.
A similar record was set in Kingman, Ariz., where the June 28-30 period was the first time it recorded three straight days with high temperatures of 100°F or greater.
The heat wave is the result of a massive dome of high pressure that has rerouted the jet stream from the Pacific Ocean northward into Canada, preventing storms and cooler air from surging south, and locking the already drought-stricken West into an extended bout of sizzling temperatures.
While each heat wave has ties to short-term weather variability, increasingly common and intense heat waves are one of the most well-understood consequences of manmade global warming, since as global average surface temperatures increase, the probability of extreme heat events increases by a greater amount.
Data already suggests that heat waves have are becoming more common worldwide, and the Western U.S. in general has been warming faster than the rest of the country in recent decades. In fact, Arizona was the fastest-warming state in the continental U.S. since 1970.
One study, published in the Proceedings of the American Academy of Sciences in 2012, found that the odds of extremely hot summers have significantly increased in tandem with global temperatures. Those odds, the study found, were about 1-in-300 during the 1951-1980 timeframe, but that had increased to nearly 1-in-10 by 1981-2010.
Another study to be published in the journal Geophysical Research Letters found that manmade global warming has increased the chances of Australians experiencing extremely hot summers by more than five times, and is likely to raise the odds by even more in the coming decades. Australia experienced its hottest summer on record in 2012-2013, which also featured destructive wildfires and floods.
Extreme heat also poses a major public health threat, since extreme heat is the No. 1 weather-related killer in the U.S. The NWS has warned that little relief from the hot temperatures can be expected at night, especially in urban areas, and at least one heat-related death has been recorded in Las Vegas.
Heightening public health concerns is the lack of any nighttime relief from the heat. On June 30, for example, the low temperature in Phoenix was 91°F, which tied the record-high minimum temperature for the date. In Las Vegas, the temperature only fell to 89°F on June 30, which tied the all-time record high minimum temperature for the month of June.
In addition to the threat to public health, the hot weather is also complicating transportation in parts of the West. According to the New York Times, Phoenix-based US Airways grounded 18 of its regional flights because the manufacturer of the jets had not produced performance statistics for the aircraft at temperatures above 118°F. Extreme heat affects aircraft performance, increasing the amount of runway required for aircraft to take off because warm air has less density than cold air.
<iframe height='900' scrolling='NO' src='http://www.climatecentral.org/wgts/records/s10.php?state=us&year=2013&month=6' width='650'></iframe>
- Published: July 1st, 2013 , Last Updated: July 1st, 2013
By Andrew Freedman Follow @afreedma
A punishing and deadly heat wave is roasting the Western U.S., toppling all-time high temperature records in a wide area extending from Arizona to the Pacific Northwest. On Sunday, Las Vegas tied its all-time mark with a high temperature of a sizzling 117°F, and the heat is expected to last at least through midweek.
Credit: Weatherbell.com
The heat wave is affecting areas that are already coping with extreme drought conditions, and the hot and dry weather, combined with dry thunderstorms, has helped set off deadly wildfires — including the deadly Yarnell Hill fire in Arizona. That fire has destroyed at least 200 homes and led to the deaths of 19 specially-trained firefighters on Sunday, in the deadliest wildland firefighting event since 1933, when 29 firefighters were killed battling a blaze in Los Angeles.
The National Weather Service is warning that the heat, combined with more thunderstorms, may spark additional wildfires this week across the West, and may also contribute to extreme wildfire behavior, such as the conditions that overtook the firefighters.
The heat wave is threatening the all-time world-high temperature record of 134°F, set at Death Valley, Calif., in 1913. Forecasts show high temperatures flirting with 130-degrees there on Monday and Tuesday, but probably not reaching or exceeding the all-time mark. On June 30, the 129°F at Death Valley tied the record for the highest temperature on record there in the month of June. Records there extend back to 1911.
The heat wave is also making its presence known in national temperature statistics. During the June 24-29 period, there were 46 monthly high-temperature records set or tied in the U.S., along with 21 records for the highest overnight minimum temperature. During the same period there were 13 all-time high temperature records set or tied across the U.S., along with three all-time marks for the highest overnight low temperature. With more records set on June 30 and likely to come through July 4, the national numbers are bound to increase.
In Las Vegas, the National Weather Service called the 117°F on June 30, “The jackpot of Las Vegas record-high temperatures.” It was Las Vegas' highest temperature in the month of June, topping the old mark of 116°F set on June 15, 1940. Las Vegas also had its warmest June on record, with an average temperature of 91.5°F. Official records in Las Vegas date back to 1937.
Record-high temperatures have also been set in California’s Central Valley, Oregon, Washington, and Utah, among other states. For example, Sacramento, Calif., reached 107°F on Saturday, its daily high record. Other parts of the West are also roasting, with Salt Lake City seeing back-to-back days of the hottest temperature on record there, with highs on Friday and Saturday reaching 105°F.
At Needles, Calif., the 122°F on Sunday set a record for the first time that location has ever had three straight days of 120°F or greater heat in the month of June. The previous day, Needles reached a high of 123°F, which broke its all-time mark for the month of June. Records for Needles date back to 1888.
A similar record was set in Kingman, Ariz., where the June 28-30 period was the first time it recorded three straight days with high temperatures of 100°F or greater.
The heat wave is the result of a massive dome of high pressure that has rerouted the jet stream from the Pacific Ocean northward into Canada, preventing storms and cooler air from surging south, and locking the already drought-stricken West into an extended bout of sizzling temperatures.
While each heat wave has ties to short-term weather variability, increasingly common and intense heat waves are one of the most well-understood consequences of manmade global warming, since as global average surface temperatures increase, the probability of extreme heat events increases by a greater amount.
Data already suggests that heat waves have are becoming more common worldwide, and the Western U.S. in general has been warming faster than the rest of the country in recent decades. In fact, Arizona was the fastest-warming state in the continental U.S. since 1970.
One study, published in the Proceedings of the American Academy of Sciences in 2012, found that the odds of extremely hot summers have significantly increased in tandem with global temperatures. Those odds, the study found, were about 1-in-300 during the 1951-1980 timeframe, but that had increased to nearly 1-in-10 by 1981-2010.
Another study to be published in the journal Geophysical Research Letters found that manmade global warming has increased the chances of Australians experiencing extremely hot summers by more than five times, and is likely to raise the odds by even more in the coming decades. Australia experienced its hottest summer on record in 2012-2013, which also featured destructive wildfires and floods.
Extreme heat also poses a major public health threat, since extreme heat is the No. 1 weather-related killer in the U.S. The NWS has warned that little relief from the hot temperatures can be expected at night, especially in urban areas, and at least one heat-related death has been recorded in Las Vegas.
Heightening public health concerns is the lack of any nighttime relief from the heat. On June 30, for example, the low temperature in Phoenix was 91°F, which tied the record-high minimum temperature for the date. In Las Vegas, the temperature only fell to 89°F on June 30, which tied the all-time record high minimum temperature for the month of June.
In addition to the threat to public health, the hot weather is also complicating transportation in parts of the West. According to the New York Times, Phoenix-based US Airways grounded 18 of its regional flights because the manufacturer of the jets had not produced performance statistics for the aircraft at temperatures above 118°F. Extreme heat affects aircraft performance, increasing the amount of runway required for aircraft to take off because warm air has less density than cold air.
<iframe height='900' scrolling='NO' src='http://www.climatecentral.org/wgts/records/s10.php?state=us&year=2013&month=6' width='650'></iframe>
Amir Mohsen
متخصص بخش هواشناسی
وحشتانکه در تراز 500 میلی بار مرکز کانتر 597 دکامتر غرب آمریکا رو در هم گرفته
Maximum temperature in 24h. 07/01/2013 at 15:00 UTC
(100 of 241 stations)
(100 of 241 stations)
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