North American Weather (U.S.A & Canada)

[knocker]

Very impressive depression southern Canada.

 

GFS 12z analyzed southern Canada low pressure at impressive 981 mb, amazing for June 30. pic.twitter.com/zeKK9uzofZ

[knocker]

Midday ECM for weds.

 

[NUT]

http://www.lightningmaps.org/realtime?lang=en

 

If you move the map to the US Iowa's more or less disappeared with the amount of lightning strikes it's received today

[knocker]

All the Ways a Hurricane Could Ruin Your Fourth of July Weekend

http://www.slate.com/blogs/future_tense/2014/07/01/tropical_storm_or_hurricane_arthur_could_ruin_your_fourth_of_july_celebration.html

[knocker]

Tropical Storm Warnings for North Carolina as Arthur Heads North

 

Tropical Storm warnings are up for the coast of North Carolina as Tropical Storm Arthur heads north at 7 mph. The heaviest weather associated with Arthur is on its east and south sides, and a buoy 128 miles east of Cape Canaveral, Florida, on Arthur's east side, recorded sustained winds of 47 mph, gusting to 60 mph at 6:50 am EDT on Wednesday. Significant wave heights at the buoy were an impressive 17.4' this morning. Radar out of Melbourne, Florida on Wednesday morning showed that Arthur had built about 1/2 of an eyewall, on the northeast to southwest side of the center. Bands of heavy rain were affecting the east coast of Florida near Cape Canaveral Wednesday morning, but rainfall amounts from the storm have generally been less than one inch over Florida. Satellite loops on Wednesday morning showed a slow but steady increase in the intensity and areal coverage of Arthur's heavy thunderstorms, with the potential beginning of a Central Dense Overcast (CDO) of high cirrus clouds forming on the east side of the center. A CDO is a classic sign of an intensifying tropical storm that is approaching hurricane strength. However, the visible satellite loops also showed signs that Arthur is struggling with dry air. Arc-shaped bands of low cumulus clouds were racing away from the storm to the north of the center, indicating that dry air had gotten ingested into Arthur's heavy thunderstorms, creating strong downdrafts that were spreading out along the ocean surface. This process robs a tropical storm of moisture and energy, and means that Arthur has considerable work to do in order to moisten its environment before the storm can close off an eyewall and attain hurricane strength. The clockwise circulation of an upper level high pressure over Florida was bringing northerly winds over Arthur at high altitude, and these winds were creating light wind shear of 5 - 10 knots. Water vapor satellite loops showed dry air to the north and west of Arthur.

 

http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=2713

[knocker]

Fairbanks sees 1/4 of average annual rainfall in 24 hours

 

FAIRBANKS -- After two days, this is already the 12th rainiest July in the history of Fairbanks.

 

For the third time in two weeks, a rainstorm laden with moisture from the eastern Gulf of Alaska drenched the Fairbanks area Tuesday and early Wednesday, dumping more than 3 inches of rain. Over the last two weeks, Fairbanks has received about half of its average annual rainfall, one of the wettest stretches since Felix Pedro discovered gold in 1902. During a 24-hour period Tuesday and Wednesday, about one-quarter of the average annual rainfall fell.

 

http://www.alaskadispatch.com/article/20140702/fairbanks-sees-14-average-annual-rainfall-24-hours#.U7WwB8FStI0.twitter

[knocker]

Most extreme 850-mb temps look like Tuesday 12z from GFS ... -15°C anomalies impressive for July or any month. pic.twitter.com/Ru1KiUZHbS

[knocker]

Mid-July Is Looking More Like Mid-September

http://www.slate.com/blogs/future_tense/2014/07/10/polar_vortex_weather_mid_july_will_be_as_cool_as_mid_september_in_east_and.html

[stewfox]

Mid-July Is Looking More Like Mid-September

http://www.slate.com/blogs/future_tense/2014/07/10/polar_vortex_weather_mid_july_will_be_as_cool_as_mid_september_in_east_and.html

 

 

Clearly shown here .

Edited July 14, 2014 by stewfox

[knocker]

Heat wave hits record highs across B.C. but hinders fire-suppression efforts

 

A provincewide heat wave in B.C. is expected to hit record highs in the coming days, heightening concerns about wildfires.

 

Environment Canada says record-high temperatures, compared to July 12 and 13 in previous years, have been measured in several communities, with a possibility of more to come.

 

Among the records broken were 41.1 C in Lytton (previous record for July 13 was 40 C in 1961), Osoyoos, 40 C (37.7 C, 1996), Pemberton, 39.9 C (37.5 C, 2012), Princeton, 37.7 C (34 C, 1996) and West Vancouver, 32 C (29.3 C, 1996).

 

http://www.theprovince.com/news/Heat+wave+hits+record+highs+across+hinders+fire+suppression+efforts/10027046/story.html

[knocker]

“Unusually comfortable†air mass breaks records across eastern half of U.S.

http://www.washingtonpost.com/blogs/capital-weather-gang/wp/2014/07/17/unusually-comfortable-air-mass-breaks-records-across-eastern-half-of-u-s/

[NorthNSW]

My parents arrived in Vancouver yesterday. They left Sydney at 10:20am Sunday and arrived in Vancouver at 7:30am Sunday (that's not a typo). 

They flew direct from Sydney to Vancouver on Air Canada. They hit three areas of decent turbulence. Notably, one patch near Hawaii and the flight path was diverted slightly, and another patch roughly halfway between Hawaii and Vancouver.

They arrived in a damp, misty/drizzly Vancouver. Walked about the city centre, including checking out Canada Place. A cool to mild but comfortable day (I see it got to 19.2ºC yesterday at Vancouver Airport, which is actually a typical July max temp here). They stayed at the Fairmont Hotel last night.

I spoke to them about an hour ago, and they board the Norwegian Sun (cruise ship) at Canada Place in a few hours. The ship will take them on an Alaskan cruise. Tomorrow (Jul 22) they cruise through the 'Inside Passage' to Ketchikan (Jul 23), Juneau (Jul 24), Skagway (Jul 25), cruise Glacier Bay (Jul 26), cruise Hubbard Glacier (Jul 27), Anchorage (Jul 28), cruise Hubbard Glacier (Jul 29), Icy Strait Point (Jul 30), cruise Sawyer Glacier (Jul 31), Juneau (Jul 31), Skagway (Aug 01), Ketchikan (Aug 02), cruise 'Inside Passage' (Aug 03), and arrive back in Vancouver in the morning (Aug 04).

[keithlucky]

Even cooler in USA next week snow possible over high ground next week similar to February 2014 set up.

Edited July 22, 2014 by keithlucky

[keithlucky]

More than 2070 cold records broken in the USA this week http://www.ncdc.noaa.gov/cdo-web/datatools/records

[BornFromTheVoid]

More than 2070 cold records broken in the USA this week http://www.ncdc.noaa.gov/cdo-web/datatools/records

 

I see lots of cold records, but where is the 2070 number from?

[stewfox]

I see lots of cold records, but where is the 2070 number from?

 

There are a number of web sites reporting such a number 

 

http://iceagenow.info/2014/07/2070-cold-records-broken-7-days-u-s/

[BornFromTheVoid]

There are a number of web sites reporting such a number 

 

http://iceagenow.info/2014/07/2070-cold-records-broken-7-days-u-s/

 

Ah right, it was accurate a few days ago. Cheers.

Edited July 23, 2014 by BornFromTheVoid

[keithlucky]

Ah right, it was accurate a few days ago. Cheers.

28504 low records set in the USA over the last 365 days ,compared with only 13205 max records broken ,so USA has had a pretty cold year according To NOAA

Edited July 25, 2014 by keithlucky

[knocker]

Tonight, we may break the record warmest minimum temperature in Key West at 85° F. #keywest #flwx #FLkeys pic.twitter.com/BmXzc7wUs8

[knocker]

Lake Mead Before and After the Epic Drought A new study shows the Colorado River basin is losing water at a “shocking†rate.

http://www.slate.com/articles/technology/future_tense/2014/07/lake_mead_before_and_after_colorado_river_basin_losing_water_at_shocking.html?wpsrc=sh_all_dt_tw_ru

[knocker]

Interesting stuff.

 

Amazing upwelling on Lake Michigan - water temp. drops from 63° to 39°

 

http://blogs.woodtv.com/2014/07/31/lake-michigan-upwelling/

[sundog]

Accuweather Autumn forecast for North America.

[knocker]

California shatters long-standing record for warmest year to date through July. #cawx #cadrought #cawater #cafire pic.twitter.com/ZMNNeKltYs

 

NOAA: Despite California's record heat, U.S. on pace for coldest year since 1993. pic.twitter.com/MyqfORqmyO

 

NOAA: Cold Bay, Alaska was the warmest it's ever been last month. http://ak-wx.blogspot.com/2014/08/june-july-anomalies.html â€¦ pic.twitter.com/y8sJ4MLnOr

 

U.S. was almost exactly average in July, but extremes continue: West Coast heat wave; Ark. & Ind. record cold. pic.twitter.com/qp7Hx2JJxG

Edited August 12, 2014 by knocker

[knocker]

Extreme Rains Swamp Detroit

http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=2758

[knocker]

Remarkable' warming reported in Central California coastal waters

http://www.latimes.com/local/lanow/la-me-ln-warming-california-central-coast-20140811-story.html