مباحث عمومی هواشناسی

[Amir Mohsen]

درود بر دوستان عزیز و صبح همگی بخیر:گل:

مطابق با اطلاعات سوندیگ ایستگاه فرودگاه مشهد در بامداد امروز ، ما شاهد هوای مرطوبی از تراز سطح زمین تا تراز میانی جو هستیم

که مطابق با آخرین گزارش ایستگاه مشهد در همین لحظه هم میزان رطوبت در سطح زمین به نسبت بالاست:

Current weather observation

The report was made 32 minutes ago, at 03:20 UTC

Wind 15 km/h from northwest

Temperature 25°C

Humidity 47%

Pressure 1012 hPa

Visibility 10 km or more

no clouds below 1500 m and no cumulonimbus

در این گزارش متوگرام هم مشخصه که از زمانیکه جهت وزش باد در مشهد غربی- شمالغربی شده فاصله بین خطوط دمایی نقشه شبنم و دمای سطح زمین کاهش پیدا کرده که نشون میده رطوبت هوا افزایش پیدا کرده:

 

[Amir Mohsen]

[h=2]Incredible Florida Waterspout Photo
[h=5]July 09, 2013; 8:59 PM
Share |

AccuWeather.com Meteorologist and Social Media Coordinator Jesse Ferrell writes in his blog: "When I saw this photo this morning on Social Media, I couldn't believe it was real."

Ferrell has vetted the photo and says that it is one of dozens of photos of the photogenic waterspout that came on shore north of Tampa, Fla., Monday night (additional photos on Twitter and ******** from Denis Philips (ABC) and Paul Dellegatto (FOX)). The photo (and video below) was taken by Joey Mole, of Safety Harbor, Fla.
Joey says he had never seen a waterspout before, and neither had his neighbors, who had lived there for 40 years. It made landfall only 250 feet from Joey's dock and went over his neighbor's home, two houses down. Joey says minor damage occurred, including missing shingles and downed trees.
For more about how Ferrell confirmed the photo's authenticity, read the WeatherMatrix Blog.
​

 

[rahsazan]

سلام و صبح دوستان بخیر

حلول ماه مبارک رمضان مبارک:گل:

 

[Amir Mohsen]

 

[Amir Mohsen]

بارش حاصل از ابر در تصویر بالا در تورنتو کانادا:

​

Torrential rains from a series of thunderstorms brought Toronto, Canada its heaviest 1-day rainfall in recorded history yesterday. The storms knocked out power to over 300,000 people and crippled transportation. Read more at:
​

 

[Amir Mohsen]

اینهم از جزئیات کامل خبر بالا:

Torrential rains from a series of "training" thunderstorms that moved over the same location brought Toronto, Canada[HIGHLIGHT] its heaviest 1-day rainfall in recorded history on Monday, July 8. Toronto's Pearson Airport recorded 126 mm (4.96") of rain, beating Toronto's previous all-time rainiest day record set on October 15, 1954, from the remnants of Hurricane Hazel, when 121.4 mm (4.78") fell. Weather records at the airport go back to 1937. [/HIGHLIGHT]According meteorologist Rob Davis with the Weather Network, the 97 mm (3.82") that fell in downtown Toronto yesterday was the 2nd greatest 1-day rainfall since 1840. The only greater amount fell on July 27, 1897. Yesterday's storms knocked out power to over 300,000 customers in the city and crippled transportation.

Figure 1. Cars stranded on the #DVP, one of Toronto's busiest highways on Monday, July 8, 2013. Photo posted to Twitter by Michelle Shephard@shephardm.

Figure 2. Radar image taken at the height of Toronto's day of record rain on July 8, 2013, showing a line of heavy thunderstorms to the northwest of the city about to move to the southeast over Toronto, bringing several hours of heavy rain.

Canada has taken a beating from extreme weather this year. Less than a month ago, massive flooding hit the city of Calgary, Alberta, creating a $3 billion flood disaster. This was the most expensive flood in Canadian history, and third most expensive natural disaster of any kind for the country. The only more expensive disasters were a 1989 wildfire ($4.2 billion in 1989 dollars) and a 1977 drought ($3 billion in 1977 dollars.) It's also been a bad fire season in Canada. According to an email I received from Yan Boulanger of Ressources Naturelles Canada, Canadian Forest Service, a fire that has consumed about 500,00 hectares (1,235,000 acres) in Eastmain, Quebec is the biggest fire in Quebec's recent history, from 1959 onward.

Some rather remarkable Toronto flooding photos are posted at the Weather Network.

Jeff Masters
​

 

[Cumulonimbus]

Incredible Florida Waterspout Photo

July 09, 2013; 8:59 PM

​

سلام و صبح بخیر
واقعا این عکس فوق العاده جالب و جذاب هست.
عکسهایی که تا به حال از Waterspout دیده بودم از فاصله بسیار دور گرفته شده بود.

 

[imboeing]

ديگه خسته شديم
از اول سال ٩٢ هيچ بارش درست درموني نداشتيم ! :ناراحت:

 

[کدخدا]

دوستان هواشناس اسپمر بالقوه بودن،فقط مجال اینو نداشتن که بالفعل باشن،برین تاپیک گفتگوی آزاد رو ببینین چه خبر کردن بچه ها :دی

:خنده2: خجالت زدمون میکنی :خنده2:

 

[کدخدا]

عکس های از سیل تورنتو کانادا

 

[rahsazan]

کولاک برفم آرزوست.....

این عکسو امیرمحسن تو wunderground گذاشته

 

[کدخدا]

 

[کدخدا]

 

[کدخدا]

یه کلیپ یک دقیقه ای از این ابر مخصوص ارزش یکبار دیدن داره

[video]http://brightcove.vo.llnwd.net/d21/unsecured/media/1612802193/1612802193_2536575890001_IMG-2845joeymole.mp4?videoId=2536563012001&lineUpId=&p ubId=1612802193&playerId=1377024971001&affiliateId =[/video]

 

[rahsazan]

یه کلیپ یک دقیقه ای از این ابر مخصوص ارزش یکبار دیدن داره

سلام محمدجان
خیلی جالب بود، دستت درد نکنه
تو این تاپیک هم قرارش بده بی زحمت که لابلای پستها گم نشه
http://www.iranjoman.com/showthread.php?t=70480

 

[کدخدا]

سلام محمدجان
خیلی جالب بود، دستت درد نکنه
تو این تاپیک هم قرارش بده بی زحمت که لابلای پستها گم نشه
http://www.iranjoman.com/showthread.php?t=70480

سلام محمدرضا جان

چشم :گل:

 

[Amir Mohsen]

2- سرما و برف

همان طور که گفتیم، آذربایجان غربی بنابر موقعیت جغرافیایی خود زمستان های بسیار سردی دارد. در بیشتر زمستان ها توده هواهای سرد و مرطوب این استان را فرا می گیرد و موجب سرمای شدید و بارش برف های سنگین می شود. درنتیجه، به محصولات کشاورزی و دامداری منطقه خسارت هایی وارد می آید، راه ها مسدود می شود و در اثر سقوط بهمن، صدمات جانی و مالی زیادی به مردم وارد می آید. مثلاً در سال 1342 هجری شمسی، آذربایجان غربی در اثر برف زیاد و سرمای ناگهانی خسارت های زیادی دید و تعداد زیادی از دام ها در اثر سرما و گرسنگی تلف شدند.
[HIGHLIGHT]
1962 میلادی[/HIGHLIGHT]
​

 

[mohamad$]

 

[Amir Mohsen]

The coldest winter since 1740
The winter of 1962/63 was the coldest over England and Wales since 1740. As in 1947, anticyclones to the
north and east of the British Isles brought bitterly cold winds from the east day after day. As in 1947,
depressions followed tracks to southward of the British Isles and their fronts brought snow to England,
Wales and the southernmost parts of Scotland.
Mean maximum temperatures for January 1963 were more than 5 °C below average over most of Wales, the
Midlands and southern England and in some places more than 7 °C below average. Mean minimum
temperatures over this area were equally far below average. The story was much the same in February.
The winter began abruptly, just before Christmas 1962. The weather in the first three weeks of December
was changeable and sometimes stormy. From the 4th to the 6th, London experienced its worst spell of fog
since the Great Smog of 1952.
Ten days later, the weather was particularly wet and stormy, with a gust of 88 knots recorded at Blackpool
during the night of 15/16 December, the strongest since records began in 1946. The weather situation
changed markedly on 22 December. On the 23rd, high pressure extended all the way from the southern Baltic
to Cornwall, bringing cold easterly winds to much of England and Wales.
A belt of rain over northern Scotland on 24 December turned to snow as it moved south, giving Glasgow its
first white Christmas since 1938. The snow belt reached southern England on Boxing Day and became almost
stationary. The following day, snow lay five centimetres deep in the Channel Islands and 30 cm deep in
much of southern England.
A blizzard over south-west England and south Wales on 29 and 30 December brought snowdrifts 6 m deep.
Villages were cut off, some for several days. Roads and railways were blocked. Telephone wires were brought
down. Stocks of food ran low. Farmers couldn't reach their livestock. Thousands of sheep, ponies and cattle
starved to death.
Fig 5: The start of the winter: the cold front
that brought the snow to England on 26
December 1962. Chart for 0600 UTC on 26
December.
From Boxing Day 1962 to early March 1963, much of England
was continuously under snow. Unlike the winter of 1947,
however, 1962/63 was sunnier than average in most parts of
the area affected, considerably so in some places.
Manchester's sunshine total for January was more than twice
the average. Even in the south of England, where snow fell
frequently, sunshine totals were above average in most
places.
The most remarkable feature of the 1962/63 winter was not
so much its snowiness as its coldness. The winter of 1947
was snowier than 1962/63, but not as cold.
In January 1963, there were 25 or more air frosts almost everywhere in southern England and south Wales.
In February 1963, air frost occurred every night at Durham, and almost every night in the English Midlands.
At several stations in southern England and south Wales, mean maximum temperatures were below 0 °C in
January and little higher in February. Mean minimum temperatures were well below freezing almost
everywhere in England, Wales and Scotland away from coasts. Extremely low temperatures were recorded -
for example, a minimum of -22.2 °C was recorded at Braemar on 18 January.

Lakes and rivers froze. Ice formed on harbours in the south and east of England. Patches of ice formed on
the sea. Huge blocks of ice formed on beaches where waves broke and the spray froze. Coastal marine life
suffered severely.
Fig 7: Coastal areas were affected by ice
Photo © Lynn Tait Gallery
As in 1947, so it was in the winter of 1962/63: brief thaws
occurred from time to time, and winter didn't fully relax its
grip before early March. In the last few days of February and
the first few days of March 1963, sunny weather brought
afternoon temperatures of 4 or 5 °C, but clear skies allowed
temperatures to plummet at night. Frosts were moderate or
severe.
At last, on 4 March, a mild south-westerly flow of air reached
the British Isles. There was occasional rain that day in most
parts of Britain, and further rain the following day in the west
and north, this time prolonged. On 6 March, there was no frost
anywhere in the British Isles and the temperature in London
reached 17 °C - the highest since 25 October 1962.
The coldest winter over England and Wales since 1740, and
the coldest over Scotland since 1879, had ended. With the
thaw came flooding, but nothing like the scale of the 1947
floods. Soon after the winter of 1962/63, life returned to
normal.
​

 

[mohamad$]

اینجا کجاست و اون قله دور دست اسمش چیه ؟ لطفا تقلب نکنید که خیلی راحت میفهمم