Hurricane Irene 2011 – now tropical storm with 50 mph winds

At noon 8/28/11 PST, I’ve discontinued this thread as a “top post” on WUWT.

NOTE: New posts will appear below this one while Irene is in play.

UPDATE: at 5PM EST 8/28 Irene is a tropical storm with sustained winds of 50mph. See updated bulletin 34 below

http://www.intelliweather.net/imagery/IntelliWeather/sat_ec_120x90.jpgNew exclusive high definition tracking map added to our Tropical Storm Reference Page.

Here’s the latest imagery below, which will automatically update every 30 minutes:

Click image to animate it over several hours

Here is link to Ryan Maue’s FSU model page, which updates GFS, NAM, HWRF, GFDL, NOGAPS, ECMWF, and CMC throughout the day.  Example here is the NAM-WRF 4-km high-resolution simulated radar (60-hour forecast):  watch the eye size grow and the fronts move by, and the daytime seabreeze showers…

NCEP NAM-WRF 4-km CONUS simulated radar animation

Here’s more, storm tracks and wind probabilities for south Florida and US East Coast:

http://www.nhc.noaa.gov/storm_graphics/AT09/refresh/AL0911W5+gif/145813W_sm.gif

Track Hurricane Irene on your PC in radar and satellite imagery – click the animation

StormPredator

BULLETIN

TROPICAL STORM IRENE ADVISORY NUMBER  34

NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092011

500 PM EDT SUN AUG 28 2011

...CENTER OF IRENE NEARING NORTHERN NEW ENGLAND...

SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION

----------------------------------------------

LOCATION...42.7N 72.8W

ABOUT 65 MI...100 KM S OF RUTLAND VERMONT

MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H

PRESENT MOVEMENT...NNE OR 20 DEGREES AT 26 MPH...43 KM/H

MINIMUM CENTRAL PRESSURE...975 MB...28.79 INCHES

WATCHES AND WARNINGS

--------------------

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A TROPICAL STORM WARNING IS IN EFFECT FOR...

* CAPE HENLOPEN DELAWARE NORTHWARD TO EASTPORT MAINE...INCLUDING

DELAWARE BAY...NEW YORK CITY...LONG ISLAND...LONG ISLAND SOUND...

COASTAL CONNECTICUT AND RHODE ISLAND...BLOCK ISLAND...MARTHAS

VINEYARD AND NANTUCKET

* UNITED STATES/CANADA BORDER NORTHEASTWARD TO FORT LAWRENCE

INCLUDING GRAND MANAN

* SOUTH COAST OF NOVA SCOTIA FROM FORT LAWRENCE TO PORTERS LAKE

INTERESTS ELSEWHERE IN EASTERN CANADA SHOULD MONITOR THE PROGRESS OF

IRENE.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED

STATES...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE

MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE

FORECAST OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE

THE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL

METEOROLOGICAL SERVICE.

DISCUSSION AND 48-HOUR OUTLOOK

------------------------------

AT 500 PM EDT...2100 UTC...THE CENTER OF TROPICAL STORM IRENE WAS

LOCATED NEAR LATITUDE 42.7 NORTH...LONGITUDE 72.8 WEST. IRENE IS

MOVING TOWARD THE NORTH-NORTHEAST NEAR 26 MPH...43 KM/H...AND THIS

MOTION WITH A LITTLE FASTER FORWARD SPEED IS EXPECTED OVER THE NEXT

DAY OR SO.  ON THE FORECAST TRACK...THE CENTER OF IRENE WILL MOVE

OVER EASTERN CANADA TONIGHT AND EARLY MONDAY.

MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 50 MPH...85 KM/H...

WITH HIGHER GUSTS...MAINLY OVER OR NEAR THE WATER WELL EAST OF THE

CENTER.  IRENE IS FORECAST TO WEAKEN AND BECOME A POST-TROPICAL

CYCLONE BY TONIGHT.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 320 MILES...520 KM

FROM THE CENTER.  A WIND GUST OF 67 MPH...108 KM/H...WAS REPORTED

FROM AN UNOFFICIAL SITE NEAR HYANNIS PORT MASSACHUSETTS.

ESTIMATED MINIMUM CENTRAL PRESSURE IS 975 MB...28.79 INCHES.
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Luther Wu
August 28, 2011 5:26 am

John Goetz says:
August 28, 2011 at 2:53 am
“Ah, the good ‘ol New York Times could not pass up the opportunity to blame this on AGW:”
http://www.nytimes.com/2011/08/28/us/28climate.html?_r=1&hp
__________________________________________________________
If the editors at the New York Times had a clue, they would have understood that by linking this over- the- top hurricane alarm with the AGW meme, people will have even more reason to think that Chicken Little has been running the show.

Disko Troop
August 28, 2011 5:28 am

My cats [….] bigger winds than this.

Frank K.
August 28, 2011 5:40 am

Rain is falling here in New Hampshire this morning. No wind. I report more later.
John Goetz says:
August 28, 2011 at 2:53 am
“Ah, the good ‘ol New York Times could not pass up the opportunity to blame this on AGW:”
Then we should be happy that global warming = weak hurricanes!
By the way, New York will be out of the rain bands later today on the dry southern part of the storm. Let the explanations for the botched intensity forecasts begin!

August 28, 2011 5:59 am

I remember hurricane Gloria back in 1985 that came right over Long Island NY with strong Cat 1 to weak Cat 2 rating and Cat 3 gusts when it hit Long Island. The storm surge was high enough to lift some of the floating docks in Huntington Harbor off there supporting piles. and blew a raft of sail boats on shore. I was on a mooring in the harbor, had put out an anchor and doubled all the lines, and suffered no damage at all. That was quite a bit stronger than Irene. Where was AGW?
Murray

Philip Finck
August 28, 2011 6:10 am

This whole hurricane hype is so utterly stupid and hyped. How can any president refer to the hurricane as `epic’……. relates to credability. And I say this as a Canadian so don’t care whether he is a republican or democrat. Fear fear.

Leon Brozyna
August 28, 2011 6:18 am

Irene hits the Big Apple … and is immediately downgraded to a Tropical Sorm (65 mph).
The after-action report will be interesting … but it’ll never make the news … they’ll be busy chasing after some other over-hyped events.

Editor
August 28, 2011 6:25 am

Catcracking says:
August 27, 2011 at 10:08 pm

I have a boat in the water on the mainland side of the Barnegat bay and have been trying to find out when it is going to sink!! My hopes are raised by your post. This was never revealed by several hours of watching TV including the weather channel.

Let us know how you (and the island) make out – I have old family ties to LBI. My grandparent’s summer place in Harvey Cedars withstood several hurricanes before getting destroyed by the March 1962 nor’easter.

nutso fasst
August 28, 2011 6:31 am

Can a nation of narcissistic nebbishes long endure?

Knut Witberg
August 28, 2011 6:33 am

What is the definition of “MAXIMUM SUSTAINED WINDS”?
How long time must the wind blow before it can be labeled “sustained”.
I just read an interview with a Swedish meteorologist who compared the wind speed with a strong Swedish storm some years back and she said that 33 m/s is a lot stronger than the average speed of Gudrun. I have however a hunch that she is comparing apples and pears, anyone who can shed light on the definitions?

Editor
August 28, 2011 6:40 am

Nick says:
August 28, 2011 at 3:21 am

Why are 300,000 people being evacuated for a 75mph storm?
What am I missing?
I don’t understand how a storm of this magnitude can bring a sea-surge large enough to cause any major damage or threaten the life of anyone that isn’t already an idiot?

Because evacuation plans are made before the conditions at impact are known, duh. I am not a fan of mandatory evacuations, I’d be happy if the were made recommended and that 911 calls from those areas be shunted off to an answering machine to protect the lives of rescuers.
As for the storm surge threat, I mentioned Long Beach Island. I’m not sure what the wind conditions were like there in March 1962, but Wikipedia notes 60 mph (96 km/h) winds and 7.6 m (25 ft) waves struck Ocean City, Maryland. While the storm did stall offshore for a couple days, LBI was cut through in three places. I’ll have more to say about it in March.

August 28, 2011 7:03 am

From the Sunday Washington Post, no less:
“A cursory look around Virginia Beach suggested that the worst damage might have been suffered by meteorologists, emergency officials and media who overhyped Hurricane Irene’s likely devastation.”

Kevin Kilty
August 28, 2011 7:35 am

Nick says:
August 28, 2011 at 3:21 am
Why are 300,000 people being evacuated for a 75mph storm?
What am I missing?
I don’t understand how a storm of this magnitude can bring a sea-surge large enough to cause any major damage or threaten the life of anyone that isn’t already an idiot?

While RW has explained why this is so, keep in mind that surge is a function not only of winds, but also of storm speed, direction, the local speed of waves in the water, and, in shallow water, slope of the ocean bottom. Some puny storms have managed an unexpectedly high surge. One such was in the NE portion of the Gulf of Mexico about ten years ago–can’t recall the name.

ZootCadillac
August 28, 2011 7:56 am

according to think progress, it’s worst then we thought
How Global Warming Is Making Hurricane Irene Worse
http://thinkprogress.org/green/2011/08/26/305265/how-global-warming-is-making-hurricane-irene-worse/
Meanwhile I have downgraded Irene from a tropical storm to the sort of weather we get in the North West UK for about 6 months of the year /sarc

David Falkner
August 28, 2011 7:57 am
ckb
Editor
August 28, 2011 8:10 am

Will go down in history as the “windless hurricane”. We had a few gusty bits here in central Mass, but nothing sustained. My family reports the same from NJ, but more flooding there.
This gives forcasters a really bad name. Yesterday I was hearing 40-50MPH sustained winds and catastrophic damage corridor. Yawn.

John F. Hultquist
August 28, 2011 8:13 am

What happened to the Saturday the 20th post asking for projections of the path of Irene?
I wrote that I expected it to go “up the Hudson River estuary” and flood Hansen’s West Side Highway. Though done sarcastically, this call seems to have been right on the money:
http://www.pbs.org/newshour/rundown/2011/08/irene-causes-nyc-flooding-millions-without-power.html
Flooding was also causing problems in highways across the city, including the Henry Hudson Parkway and the West Side Highway in Manhattan and the Belt Parkway in Brooklyn.
Do I get any carbon credits?

Editor
August 28, 2011 8:22 am

I just heard of a very good analog storm to Irene, Hurricane Doria of 1971. From http://en.wikipedia.org/wiki/Tropical_Storm_Doria_(1971) :

On August 15, a tropical wave moved off the coast of Africa, and tracked westward while slowly organizing. On August 20, subsequent to the development of a low-level circulation, an area of convection along the wave developed into a tropical depression while located about 1,000 miles (1,600 km) east-northeast of Grenada. Initially failing to organize further, the depression moved to the west-northwest, and on August 23, it passed through the northern Lesser Antilles. The depression moved to the north of Puerto Rico, Hispaniola, and the Bahamas, and began to show further signs of organization on August 25. After briefly weakening on August 26, the depression re-strengthened while turning to the north, and attained tropical storm status on August 27 while located 230 miles (370 km) east of Daytona Beach, Florida.
After reaching tropical storm status, Doria quickly intensified as its wind field expanded while moving northward. The minimum central pressure quickly dropped, as well, and late on August 27, Doria reached its peak intensity of 65 mph (105 km/h) while making landfall on North Carolina near Morehead City. The storm maintained its peak winds as it moved north-northeastward through North Carolina, and weakened slightly to a 60 mph (95 km/h) tropical storm after entering Virginia on August 28. Doria turned to the northeast, passing through the Chesapeake Bay and Delmarva Peninsula before entering southern New Jersey. It paralleled the state a short distance inland, and after moving through New York City Doria became extratropical over northwestern Maine on August 29. The extratropical remnant continued northeastward until losing its identity near the border of New Brunswick and Quebec in Canada.

Tropical Storm Doria produced moderate winds in New York City with gusts to 48 mph (77 km/h). The storm tide reached 3.8 feet (1.2 m) above normal at Battery Park, and rainfall peaked at 5.96 inches (151 mm). LaGuardia Airport recorded 2.29 inches (58 mm) of rain in a one-hour period. The threat of the storm cancelled a baseball game between the Los Angeles Dodgers and the New York Mets. Heavy rainfall flooded streets and subways in New York. In Connecticut, Doria produced up to 3.12 inches (79 mm) of rain and wind gusts peaking at 48 mph (77 km/h) in Hartford. Doria dropped light rain in Rhode Island, including a report of 0.97 inches (25 mm) in Providence. The storm also produced wind gusts of up to 61 mph (98 km/h) and a storm tide of 5.9 feet (1.8 m) above mean water level. In Boston, rainfall totaled to 0.83 inches (21 mm), while wind gusts peaked at 80 mph (130 km/h) at the Blue Hill Meteorological Observatory. Two people drowned in Marblehead when they were swept away by surf from the storm.
The storm dropped moderate rainfall in Vermont, including a total of 5.73 inches (141 mm) in Mays Mill. The rainfall caused road washouts, landslides, and damage to bridges in the southeast portion of the state. The center of Tropical Storm Doria passed over south-central New Hampshire, resulting in heavy rains and damaging winds. Sustained winds in Maine were generally around 30 mph (48 km/h), while gusts peaked at 61 mph (98 km/h) in Lewiston. The strong winds resulted in downed trees and widespread outages to power and telephone service. The winds also damaged a mobile home in Sabattus and a steel shed in Lewiston. Doria produced moderate rainfall, including a total of 1.75 inches (44 mm) in Lewiston, though little flooding occurred.
Moisture from Tropical Storm Doria entered southeastern Canada, peaking at over 3 inches (75 mm) in the Montérégie region of Quebec. The rainfall led to severe flooding in Victoriaville, causing damage to roads, bridges, and crops. Damage totaled to about $250,000 (1971 CND, $245,000 1971 USD, $1.33 million 2011 USD).
Throughout its path, Tropical Storm Doria caused seven deaths and $147.6 million in damage (1971 USD, $800 million 2011 USD).
In early September 1971, President Richard Nixon declared counties in New Jersey, New York, and Pennsylvania as disaster areas due to heavy rains and flooding. This allowed citizens in disaster areas to apply for federal assistance.

h/t: Todd Gross (Boston weather fans will remember him) at CNBC.

Editor
August 28, 2011 8:28 am

Oops – meant to change my intro on the previous post (I think in spamurgatory) from hurricane Doria to tropical storm Doria.

fred houpt
August 28, 2011 8:30 am

I’ve probably asked this before but I cannot recall the answer. Isn’t it the case that storms, hurricanes being the biggest, actually fill the role of a massive heat distribution system? I mean, they suck up all that energy (heat + moisture) over warm oceans and then drop it far away from the hot spots….thus distributing heat. Does this mean then that weather systems, maybe all of them, are heat distribution systems that work in tandem with all winds? If so, then if the earth is really heating up a small amount then the ecosystem of our planet should respond accordingly and push the heat out into storms and winds. Am I missing something? It seems obvious…..but….

Editor
August 28, 2011 8:41 am

Knut Witberg says:
August 28, 2011 at 6:33 am
> What is the definition of “MAXIMUM SUSTAINED WINDS”?
Easy one, but worth covering. From http://en.wikipedia.org/wiki/Maximum_sustained_wind

The maximum sustained wind normally occurs at a distance from the center known as the radius of maximum wind, within a mature tropical cyclone’s eyewall, before decreasing at farther distances away from a tropical cyclone’s center. Most weather agencies use the definition for sustained winds recommended by the World Meteorological Organization (WMO), which specifies measuring winds at a height of 10 metres (33 ft) for 10 minutes, and then taking the average. However, the United States National Weather Service defines sustained winds within tropical cyclones by averaging winds over a period of one minute, measured at the same 10 metres (33 ft) height. This is an important distinction, as the value of a one-minute sustained wind is 14% greater than a ten-minute sustained wind.

I’m having more trouble finding the definition for gust, I think that’s something like the minimum speed over 5 seconds.

Catcracking
August 28, 2011 8:46 am

Ric Werme says:
August 28, 2011 at 6:25 am
Ric,
Got a call from my friend in Forked River.
Boat is fine, I don’t know about LBI, but Hurricane made Landfall in Little Egg Harbor, about 20 Mi North of AC with Winds of 79 MPH. These were the max recorded in NJ. My son lives near there and had 2 trees down but no damage to house. I know that the barrier islands (LBI) got quite a pounding from the rough seas and surge the governor called for a mandatory evacuation.
We were fortunate along the NJ coast that the high winds were offshore for the most part on the east side.
Again thanks to Anthony for the great info.

James ibbotson
August 28, 2011 9:25 am

950 mb pressure. Is a normal UK low pressure system.
Being from the hilly part of the uk in the north, Sheffield, the wind speeds are about 30mph and a bit of sideways rain, I’ve played rugby football(soccer) in those conditions on the top of peak district hills in my youth.
It Basically looks like a normal english low pressure system that we get continuously from September though to feb.
There is nothing quite like normal sideways rain and strong winds.
It’s the primary reason why we have cavity built brick houses in the UK, so when the rain is sideways, the water goes through the outer brick layer into the cavity and drops safetly into the space.
There is a reason we don’t do wood houses in the UK. They wouldn’t get though a normal winter !

Gary D.
August 28, 2011 9:33 am

Prepare for the worst – hope for the best. My thought is everything worked very well. People were well prepared, emergency management was well prepared, and everthing went smoothly. What’s wrong with that?

Keith
August 28, 2011 9:43 am

James, 950mb is a bit on the extreme side for a ‘normal UK low pressure system’! 980mb is a reasonable level for a low producing gales, while a good winter storm is around 960mb. 950mb in an extratropical system is about what the Great Storm of 1987 and the Burns’ Day Storm of 1990 reached. Not exactly everyday stuff.
The Three Little Pigs were onto something about UK housebuilding though…

~FR
August 28, 2011 9:43 am

Why are 300,000 people being evacuated for a 75mph storm?
What am I missing?

Probably that those 300K people depend heavily on a subway and train system that does not shut down on a dime.