Significant Severe Weather Event Possible Thursday, August 27, 2020

[CT Rain]

23 minutes ago, CTFarmer said:

That's amazing-

Ha- that's crazy (or rather I'm not crazy). I checked the mid-sound buoy for observations, but naturally its offline.

I'm super-curious if this is water pushed from the storm(s) and it was sloshing around Long Island Sound.

Looks like it was a meteotsunami in Long Island Sound. 

[Ginx snewx]

6 hours ago, CTFarmer said:

That's amazing-

Ha- that's crazy (or rather I'm not crazy). I checked the mid-sound buoy for observations, but naturally its offline.

I'm super-curious if this is water pushed from the storm(s) and it was sloshing around Long Island Sound.

Yep,  New London also had a slosh trace on water levels. Excellent report by you. Hope your dingy is ok.

[Damage In Tolland]

1 hour ago, Ginx snewx said:

Yep,  New London also had a slosh trace on water levels. Excellent report by you. I like little dingy ok.

???

[RUNNAWAYICEBERG]

 

[RUNNAWAYICEBERG]

Dodged a bullet in NW New Haven county as the tor formed overhead but didn’t touchdown until it was SE of here. 

 

[BrianW]

 

[Typhoon Tip]

10 hours ago, CT Rain said:

Looks like it was a meteotsunami in Long Island Sound. 

Yeah I was going to suggest a seiche wave effect too.  

[Typhoon Tip]

You know ...it's funny..the morning WPC current surface ob shows that front still has not moved more than ~ 50 miles from the same sun-up position and axis of orientation, since yesterday at dawn.

We were right to assess the boundary as having difficulty intruding into SNE during yesterday. I thought the warm front might get to HFD and I don't think that actually verified - though close?  In any case, what were the bulk shear values - I didn't look...bummer.   But it is truly astounding just how gradiented rich the region was between BOS-LGA ( rough coordinates..) during the day yesterday ( thermodynamically...).  ... then, to run a mid level jet perturbation over that gradient meant hell to pay...  

Weatherwiz I think should get some foresight credit for the clearing offering some diabatic assist to instability on the polarward side of the NW-SE orient frontal boundary. I think he mentioned that, but... I'm not sure which side of the boundary those supercells were riding...  interesting. The thing is, the boundary was initially SW of the axis of SC tracks, and it was repositioned somewhere in CT during the late morning early afternoon... when the clearing took place - not sure which happened first.  Was the warm sector clearing? Or was the ceiling saturation drying from the sun and then the sun warmed and mixed out the shallow air mass allowing the warm front to reposition - ...  geeks paradise -  

[CoastalWx]

1 hour ago, BrianW said:

 

Now that's a lot of damage.

[CTFarmer]

2 hours ago, BrianW said:

 

That video is EXACTLY what it was like. 

Just got back from Leete's Island, basically was cutting paths through trees last night so people could get out. Utility guys were swarming when I left this morning. 

One neighbor's cottage smashed, one car smashed. Water-facing windows blown-out in numerous cottages. 

Thimble Islands (to the northwest) are storm-hardy, but I know Money Island has severe damage.

And got my little boat out of the water last night, but here it is right after getting flipped. 

It's only about 12" above the water line and about 1000 lbs total with the motor. The wind managed get under it and flip it. 

[CTFarmer]

Dump of screenshots during the event:

 

[Ginx snewx]

28 minutes ago, CTFarmer said:

Dump of screenshots during the event:

 

nice captures

[CoastalWx]

Where do you get that detail for the mesos, hail etc? Is that an additional subscription on Radarscope?

[CTFarmer]

6 minutes ago, CoastalWx said:

Where do you get that detail for the mesos, hail etc? Is that an additional subscription on Radarscope?

Just the "Pro Tier One" subscription.

When there's a message icon on a storm or warning/watch box, the mesoscale event details are there. 

[BrianW]

2 more radar grabs I got off twitter. I was on the highway earlier and you can see right where it crossed 91 and 95 as all the tree tops are gone

[Hoth]

Assuming this is officially counted as a tornado, my uncle will have the dubious distinction of getting hit by all three Hamden tornadoes. His house got heavily damaged by the F4 in '89, the '18 tornado went over his car while he was commuting home on Gaylord Mtn Road, and this go round his car got crushed by a falling oak as it went by. Fortunately he was not in it.

[Cyclone-68]

1 minute ago, Hoth said:

Assuming this is officially counted as a tornado, my uncle will have the dubious distinction of getting hit by all three Hamden tornadoes. His house got heavily damaged by the F4 in '89, the '18 tornado went over his car while he was commuting home on Gaylord Mtn Road, and this go round his car got crushed by a falling oak as it went by. Fortunately he was not in it.

That is pretty amazing 

[RUNNAWAYICEBERG]

16 minutes ago, Hoth said:

Assuming this is officially counted as a tornado, my uncle will have the dubious distinction of getting hit by all three Hamden tornadoes. His house got heavily damaged by the F4 in '89, the '18 tornado went over his car while he was commuting home on Gaylord Mtn Road, and this go round his car got crushed by a falling oak as it went by. Fortunately he was not in it.

Glad he is ok but it might be time to move to Hudson Bay. 

[Damage In Tolland]

31 minutes ago, Hoth said:

Assuming this is officially counted as a tornado, my uncle will have the dubious distinction of getting hit by all three Hamden tornadoes. His house got heavily damaged by the F4 in '89, the '18 tornado went over his car while he was commuting home on Gaylord Mtn Road, and this go round his car got crushed by a falling oak as it went by. Fortunately he was not in it.

It’s a mini Tor alley down there. There’s gotta be a scientific reason. Wonder what it is 

[Hoth]

26 minutes ago, Damage In Tolland said:

It’s a mini Tor alley down there. There’s gotta be a scientific reason. Wonder what it is 

I assume the valley enhances helicity or something like that, but who knows?

[BrianW]

30 minutes ago, Damage In Tolland said:

It’s a mini Tor alley down there. There’s gotta be a scientific reason. Wonder what it is 

I drive back and forth from the Branford shoreline to my moms in North Haven a lot. That exact area is usually where the cooler shore temps and warmer inland temps converge. I'll see my car thermometer go from like 78 and jump to something crazy like 86 right there between exit 9 and 12. Perhaps that has something to do with it.

 

[BrianW]

There has been a plane flying crazy low around here in circles. Just checked flightradar24.com and its a Civil Air Patrol plane. I assume the NWS does aerial surveys?

 

[Hoth]

22 hours ago, CT Rain said:

Well that was quite a day

Hey Ryan, are you going to post your coverage from yesterday to Youtube? I was out of the viewing area and would love to see it.

[Ginx snewx]

 

[The 4 Seasons]

10 hours ago, Hoth said:

Assuming this is officially counted as a tornado, my uncle will have the dubious distinction of getting hit by all three Hamden tornadoes. His house got heavily damaged by the F4 in '89, the '18 tornado went over his car while he was commuting home on Gaylord Mtn Road, and this go round his car got crushed by a falling oak as it went by. Fortunately he was not in it.

I was on Gaylord mt road when it happened and turned around.

[The 4 Seasons]

Strong EF1 Tornado w/ 110mph maximum winds confirmed in North Haven, CT. 

That makes 3 tornadoes in the North Haven/Hamden area in less than 5 years (4 years and a couple weeks exactly)

The chance of seeing a tornado in ones lifetime in their hometown is probably very low, let alone 3, 
let alone on almost a yearly basis.

...EF1 TORNADO CONFIRMED FROM BETHANY TO NORTH HAVEN CT...

START LOCATION...BETHANY IN NEW HAVEN CT 
END LOCATION...NORTH HAVEN IN NEW HAVEN CT 
DATE...08/27/2020 
ESTIMATED TIME...353 PM TO 403 PM EDT 
MAXIMUM EF-SCALE RATING...EF1 
ESTIMATED MAXIMUM WIND SPEED...110 MPH 
MAXIMUM PATH WIDTH...500 YARDS 
PATH LENGTH...11.1 MILES 
BEGINNING LAT/LON...41.448, -72.992 
ENDING LAT/LON...41.349, -72.828 
* FATALITIES...NONE
* INJURIES...NONE

...SUMMARY...

BASED ON A NATIONAL WEATHER SERVICE DAMAGE SURVEY DONE IN 
CONJUNCTION WITH CT DIVISION OF EMERGENCY MANAGEMENT AND HOMELAND 
SECURITY AND LOCAL CT TOWN EMERGENCY MANAGEMENTS, IT HAS BEEN 
DETERMINED THAT A STRONG EF1 TORNADO, WITH MAXIMUM WIND SPEED OF 
110 MPH, TRACKED SOUTHEAST FROM BETHANY TO NORTH HAVEN CT. 

THE TORNADO FIRST TOUCHED DOWN IN A FORESTED AREA TO THE 
SOUTHEAST OF JUDD HILL RD IN BETHANY CT. THE TORNADO TRACKED 
SOUTHEAST OVER PRIMARILY FORESTED AREAS FROM AMITY RD, TO MUNSON 
RD TOWARDS LITCHFIELD TPKE, CREATING A PATH OF DAMAGE ABOUT 75 
YARDS WIDE, WITH HARDWOOD TREE DAMAGE CONSISTENT WITH WIND SPEEDS 
OF 80 TO 90 MPH. 

THE PATH OF DAMAGE WIDENED TO AROUND 300 YARDS AS THE TORNADO 
TRACKED SOUTHEAST TOWARDS LAKE BETHANY. STRUCTURAL DAMAGE, 
INCLUDING SIGNIFICANT ROOF DAMAGE TO SEVERAL HOMES, AND SNAPPED 
HARDWOOD TREES INDICATED WIND SPEEDS OF AROUND 100 MPH IN THIS 
AREA.

THE TORNADO PATH CONTINUED SOUTHEAST FOR ANOTHER 4 MILES TO NEAR 
THE TOWN CENTER OF HAMDEN CT, WITH TREE AND STRUCTURAL DAMAGE 
INDICATIVE OF WIND SPEEDS OF 70 TO 80 MPH. THE INTENSITY PICKED UP
SIGNIFICANTLY AS THE TORNADO APPROACHED THE CENTER OF HAMDEN, AS 
EVIDENCED BY EXTENSIVE DAMAGE TO NUMEROUS BUILDINGS, INCLUDING THE
FLAT ROOF OF A 2 STORY BUILDING ACROSS FROM HAMDEN TOWN HALL 
BEING TORN APART. WIND SPEEDS ARE ESTIMATED TO BE AROUND 100 MPH 
BASED ON THE DAMAGE TO THESE BUILDINGS, BENT METAL FENCING AROUND
TOWN HALL, AND UPROOTED AND SNAPPED TREES.

THE TORNADO REACHED MAXIMUM STRENGTH AND WIDTH FROM THIS POINT ON
AS IT CONTINUED SOUTHEAST ACROSS WILBUR CROSS PARKWAY, INTERSTATE
91, AND DOWN TO THE INTERSECTION OF ARROWDALE AND THOMPSON ST IN 
NORTH HAVEN, CT. TREMENDOUS HARDWOOD TREE DAMAGE AND STRUCTURAL 
DAMAGE WAS INDICATIVE OF WIND SPEEDS OF 110 MPH AND AN EXPANDED 
WIDTH OF 500 YARDS. IT IS A THIS POINT THAT THE TORNADO APPEARS TO
HAVE DISSIPATED WITH ITS DESTRUCTIVE STRAIGHT LINE WINDS FANNING 
OUT TO THE COAST.

[The 4 Seasons]

...MULTIPLE MICROBURSTS AFFECTING EAST HAVEN, BRANFORD, NORTH
BRANFORD, GUILFORD, AND NORTH HAVEN IN CT...

LOCATION...EAST HAVEN, BRANFORD, NORTH BRANFORD, GUILFORD, AND 
NORTH HAVEN IN NEW HAVEN, CT 
DATE...08/27/2020 
ESTIMATED TIME...403 PM TO 415 PM EDT 
ESTIMATED MAXIMUM WIND SPEED...90-100 MPH 
MAXIMUM PATH WIDTH...UP TO 1/2 MILE. 
PATH LENGTH...6 TO 7 MILES 
BEGINNING LAT/LON...41.448, -72.992 
ENDING ALONG THE NEW HAVEN COAST
* FATALITIES...NONE
* INJURIES...NONE

...SUMMARY... 

BASED ON A NATIONAL WEATHER SERVICE DAMAGE SURVEY DONE IN 
CONJUNCTION WITH CT DIVISION OF EMERGENCY MANAGEMENT AND HOMELAND 
SECURITY AND LOCAL CT TOWN EMERGENCY MANAGEMENTS, IT HAS BEEN 
DETERMINED THAT NUMEROUS LOCALIZED MICROBURSTS WITH ESTIMATED 
WINDS SPEEDS OF 90 TO 100 MPH AND PATH WIDTHS AS MUCH AS ONE HALF 
MILE FANNED OUT ALONG THE NEW HAVEN COAST FROM EAST HAVEN TO 
GUILFORD.

THE MICROBURSTS BEGAN WHERE THE UPSTREAM EF1 TORNADO DISSIPATED, 
IN THE FAR SOUTHEAST CORNER OF NORTH HAVEN, AND THEN SWEPT DOWN TO
THE COAST IN MULTIPLE SPOTS. THE PREVAILING PATTERN WAS NUMEROUS 
HARDWOOD TREES BEING UPROOTED OR TRUNKS SNAPPED, AS WELL AS 
NUMEROUS UTILITY POLES AND WIRES DOWNED OR SNAPPED, AND SOME 
ACCOMPANYING STRUCTURAL DAMAGE.

IN GUILFORD, MODERATE TREE DAMAGE WAS OBSERVED ON DROMARA ROAD, 
AS WELL AS OLD QUARRY RD, WHERE A CAR WAS CRUSHED. IN NORTH 
BRANFORD, MODERATE TO HEAVY TREE DAMAGE WAS OBSERVED ON SUNSET RD,
OAK HILL DR, BROOK RD, AND VIRGINIA RD AREAS. 18 HOMES IN THIS 
AREA WERE HEAVILY DAMAGED AS WELL. IN BRANFORD, HEAVY TREE DAMAGE 
WAS OBSERVED IN THE LAUREL HILL AND PISCITELLO DRIVE AREAS. HEAVY 
TREE DAMAGE WITH A HOUSE DESTROYED WAS OBSERVED AT VICTOR HILL. 
SEVERAL MORE HOMES WERE HEAVILY DAMAGED, WITH A FEW OF THE HARDEST
HIT AREAS OF TOWN STILL NOT ACCESSIBLE. FINALLY IN EAST HAVEN, 
THERE WERE SEVERAL POCKETS OF HEAVY TREE AND STRUCTURAL DAMAGE IN 
THE FOXON AREA, WITH SEVERAL HOMES BEING STRUCK BY TREES. THE EAST
HAVEN HIGH SCHOOL FOOTBALL FIELD WAS SEVERELY DAMAGED BY THE 
STRAIGHT LINE WINDS, WITH GRANDSTAND BLEACHERS FLIPPED OVER AND 
THE ASTRO-TURF PEELED OFF THE FIELD.

THE MICROBURSTS ULTIMATELY EXITED AND FANNED ONTO CENTRAL LONG 
ISLAND SOUND.

[RUNNAWAYICEBERG]

See Ginxy’s post. 

[Hoth]

1 hour ago, The 4 Seasons said:

Strong EF1 Tornado w/ 110mph maximum winds confirmed in North Haven, CT. 

That makes 3 tornadoes in the North Haven/Hamden area in less than 5 years (4 years and a couple weeks exactly)

The chance of seeing a tornado in ones lifetime in their hometown is probably very low, let alone 3, 
let alone on almost a yearly basis.

...EF1 TORNADO CONFIRMED FROM BETHANY TO NORTH HAVEN CT...

START LOCATION...BETHANY IN NEW HAVEN CT 
END LOCATION...NORTH HAVEN IN NEW HAVEN CT 
DATE...08/27/2020 
ESTIMATED TIME...353 PM TO 403 PM EDT 
MAXIMUM EF-SCALE RATING...EF1 
ESTIMATED MAXIMUM WIND SPEED...110 MPH 
MAXIMUM PATH WIDTH...500 YARDS 
PATH LENGTH...11.1 MILES 
BEGINNING LAT/LON...41.448, -72.992 
ENDING LAT/LON...41.349, -72.828 
* FATALITIES...NONE
* INJURIES...NONE

...SUMMARY...

BASED ON A NATIONAL WEATHER SERVICE DAMAGE SURVEY DONE IN 
CONJUNCTION WITH CT DIVISION OF EMERGENCY MANAGEMENT AND HOMELAND 
SECURITY AND LOCAL CT TOWN EMERGENCY MANAGEMENTS, IT HAS BEEN 
DETERMINED THAT A STRONG EF1 TORNADO, WITH MAXIMUM WIND SPEED OF 
110 MPH, TRACKED SOUTHEAST FROM BETHANY TO NORTH HAVEN CT. 

THE TORNADO FIRST TOUCHED DOWN IN A FORESTED AREA TO THE 
SOUTHEAST OF JUDD HILL RD IN BETHANY CT. THE TORNADO TRACKED 
SOUTHEAST OVER PRIMARILY FORESTED AREAS FROM AMITY RD, TO MUNSON 
RD TOWARDS LITCHFIELD TPKE, CREATING A PATH OF DAMAGE ABOUT 75 
YARDS WIDE, WITH HARDWOOD TREE DAMAGE CONSISTENT WITH WIND SPEEDS 
OF 80 TO 90 MPH. 

THE PATH OF DAMAGE WIDENED TO AROUND 300 YARDS AS THE TORNADO 
TRACKED SOUTHEAST TOWARDS LAKE BETHANY. STRUCTURAL DAMAGE, 
INCLUDING SIGNIFICANT ROOF DAMAGE TO SEVERAL HOMES, AND SNAPPED 
HARDWOOD TREES INDICATED WIND SPEEDS OF AROUND 100 MPH IN THIS 
AREA.

THE TORNADO PATH CONTINUED SOUTHEAST FOR ANOTHER 4 MILES TO NEAR 
THE TOWN CENTER OF HAMDEN CT, WITH TREE AND STRUCTURAL DAMAGE 
INDICATIVE OF WIND SPEEDS OF 70 TO 80 MPH. THE INTENSITY PICKED UP
SIGNIFICANTLY AS THE TORNADO APPROACHED THE CENTER OF HAMDEN, AS 
EVIDENCED BY EXTENSIVE DAMAGE TO NUMEROUS BUILDINGS, INCLUDING THE
FLAT ROOF OF A 2 STORY BUILDING ACROSS FROM HAMDEN TOWN HALL 
BEING TORN APART. WIND SPEEDS ARE ESTIMATED TO BE AROUND 100 MPH 
BASED ON THE DAMAGE TO THESE BUILDINGS, BENT METAL FENCING AROUND
TOWN HALL, AND UPROOTED AND SNAPPED TREES.

THE TORNADO REACHED MAXIMUM STRENGTH AND WIDTH FROM THIS POINT ON
AS IT CONTINUED SOUTHEAST ACROSS WILBUR CROSS PARKWAY, INTERSTATE
91, AND DOWN TO THE INTERSECTION OF ARROWDALE AND THOMPSON ST IN 
NORTH HAVEN, CT. TREMENDOUS HARDWOOD TREE DAMAGE AND STRUCTURAL 
DAMAGE WAS INDICATIVE OF WIND SPEEDS OF 110 MPH AND AN EXPANDED 
WIDTH OF 500 YARDS. IT IS A THIS POINT THAT THE TORNADO APPEARS TO
HAVE DISSIPATED WITH ITS DESTRUCTIVE STRAIGHT LINE WINDS FANNING 
OUT TO THE COAST.

Amazing. That's a big tornado for these parts. Even more amazing no one was hurt! There's your silver lining.

[Ginx snewx]

19 minutes ago, Hoth said:

Amazing. That's a big tornado for these parts. Even more amazing no one was hurt! There's your silver lining.

Someone needs to get that whole video from the East Haven High School turf field as it definitely shows the Tornado