BIRDSEYE VIEW POSTS

Since 2012 on the now retired Weather Underground blogs, I have been posting annotated "birdseye view" charts of the Atlantic basin, with a detailed explanation and forecasting that references the chart. From there you may know me as "NCHurricane2009." While I now do these "birdseye view" posts here, I will continue to do comments at Yale Climate Connections via Disqus where the former Weather Underground community has moved to. Feel free to reply to me there, at my Disqus feed at this link, or via e-mail at IOHurricanes@outlook.com 

 
 
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MY 2021 ATLANTIC HURRICANE SEASON BIRDSEYE VIEW POST #107A (Special Update)

*******Note that forecasts and outlooks in this post are NOT the official forecast from the National Hurricane Center (NHC). They are my own detailed views on the Atlantic tropics based on current observations and latest computer model runs. As such do not make decisions based on my posts...consult news media...watches and warnings from your local weather office...and any evacuation orders issued by local governments to make the most informed and best decisions. Visit the NHC website hurricanes.gov (hurricanes dot gov) for the latest watches/warnings and official forecasts on active tropical cyclones.**********


…UPDATE…SEPTEMBER 11 2021 12:25 PM EDT...

Satellite image of the remnant cyclone of Larry located between Newfoundland and Greenland as of 1520Z. The cloud shield toward the west is associated with an intensifying frontal cyclone exiting northeastern Canada:

As of 11 AM EDT… Hurricane Larry has finally lost tropical characteristics between Newfoundland and Greenland… and is now a powerful frontal cyclone supported by an amplified upper trough. The same upper trough is also aiding the intensification of a frontal cyclone exiting northeastern Canada… which is prolonging the presence of breezy to gusty winds in Newfoundland and also Labrador. These gusty winds will relax in the next 24 hours once the frontal cyclone pulls away… and whether or not the frontal cyclone or ex-Larry becomes the dominant expect coastal sea swells for Atlantic Canada… southeastern Greenland… and Iceland thru this weekend… with strong winds possible in southeastern Greenland tomorrow. This is my final statement on Larry in this special update thread as Larry is no longer tropical… and much of the impact ongoing in eastern Canada is associated with the frontal cyclone next to ex-Larry

The following are recent Environment Canada (https://weather.gc.ca/canada_e.html) weather station observations of wind in mph (value in kilometers per hour kept in parentheses):

**St John’s NL… sustained 31 (50)… gust 45 (73)… now

**Gander NL… sustained 26 (42)… gust 35 (56)… now

**Badger NL…sustained 13 (21)… gust 27 (43)… now

**St Anthony NL…sustained 34 (55)… gust 47 (76)… now

**Hopedale NL.. sustained 28 (45)… gust 49 (79)… now


…UPDATE…SEPTEMBER 11 2021 4:03 AM EDT...

The center of Hurricane Larry has finished crossing southeastern Newfoundland while now having exited the northeast coast just east of Gander… however the southeastern corner of Newfoundland is still getting walloped by gusts at or just below hurricane force as seen by wind observations at St. John’s. The southeast corner of Newfoundland remains under the southeast side of the rapidly moving hurricane where the forward speed and direction of travel is aiding the winds. Locations such as Badger and Gander northwest of the center have not seen as much wind… breezy conditions at most… as the wind on this side of Larry is likewise suppressed by its fast forward speed… even though the center passed just east of Gander. Even though the center of Larry has moved away… interests in southeast Newfoundland should remain sheltered indoors until the winds subside later this morning.


The following are Environment Canada (https://weather.gc.ca/canada_e.html) weather station observations of wind in mph over the last several hours (value in kilometers per hour kept in parentheses):

**St John’s NL… sustained 60 (96)… 1:30 local time

**St John’s NL… sustained 53 (85)… gust 76 (123)… 3:30 local time

**St John’s NL… sustained 51 (83)… gust 70 (112)… now

**Gander NL… sustained 20 (32)… gust 33 (53)… 4:30 local time

**Badger NL… sustained 11 (17)… gust 21 (34)… 3:30 local time


For more information on Larry and the rest of the Atlantic tropics… refer to full update #107 available on the home page of this site.


…UPDATE…SEPTEMBER 10 2021 11:25 PM EDT...

Winds continue to climb on the southeast corner of Newfoundland as the center of Hurricane Larry approaches… the Environment Canada weather station at St John’s recently reported a sustained wind of 42 mph (68 km/h) with a gust to 58 mph (94 km/h).


...UPDATE… SEPTEMBER 10 2021 11:11 PM EDT...

Winds continue to climb on the southeast corner of Newfoundland as the center of Hurricane Larry approaches… the Environment Canada weather station at St John’s recently reported a sustained wind of 37 mph (60 km/h) with a gust to 55 mph (89 km/h).


...UPDATE… SEPTEMBER 10 2021 11:05 PM EDT...

Center of Hurricane Larry about to make landfall in southeast Newfoundland… maximum sustained winds near the center remain at 80 mph due to the fast north-northeast forward motion of the storm which is keeping the wind speed elevated on the storm’s east side… and also as the incoming upper trough to the west continues to aid Larry with upper divergence. Tropical storm to hurricane force winds… along with coastal storm surge… are likely occurring across southeastern Newfoundland. The Environment Canada weather station at St John’s recently reported a sustained wind of 31 mph (50 km/h) with a gust to 48 mph (78 km/h).

...UPDATE… SEPTEMBER 10 2021 10:20 PM EDT...

Center of Hurricane Larry nearing St John’s and vicinity in southeastern Newfoundland… winds sharply increasing and now are at tropical storm force. A coastal storm surge is likely developing in the region:


The following are Environment Canada (https://weather.gc.ca/canada_e.html) weather station observations of wind in mph (value in kilometers per hour kept in parentheses):

**St John’s NL… sustained 31 (49)… gust 48 (77)… now

**Gander NL… sustained 13 (22)… gust 20 (33)… now

**Badger NL… sustained 4 (7)… now


...FRIDAY SEPTEMBER 10 2021 8:56 PM EDT...

Satellite image of Hurricane Larry closing in on Newfoundland as of 0040Z:

Hurricane Larry nearing southeastern Newfoundland while still packing 80 mph maximum sustained winds near the center… winds expected to increase soon. Current winds in the St John’s and Gander region are gusting just below tropical storm force. A coastal storm surge is also anticipated in the region in the coming hours.


The following are Environment Canada (https://weather.gc.ca/canada_e.html) weather station observations of wind in mph (value in kilometers per hour kept in parentheses):

**St John’s NL… sustained 24 (38)… gust 31 (50)… 20:30 local time

**Gander NL… sustained 25 (40)… gust 30 (49)… now

**Badger NL… sustained 5 (8)… now


For more information on Larry and the rest of the Atlantic tropics… refer to full update #107 available on the home page of this site.

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