Tropical Storm Andrea hits Florida

By: Dr. Jeff Masters , 11:19 PM GMT on June 06, 2013

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Tropical Storm Andrea made landfall near 5:40 pm EDT in the Big Bend region of Florida as a tropical storm with 65 mph winds. Andrea had a busy day Thursday in Florida, dumping heavy rains, spawning ten tornadoes, and bringing a storm surge of up to 4.5' to the coast. While the Hurricane Hunters did measure sustained winds of 65 mph over the ocean shortly before landfall, very few land stations recorded sustained winds in excess of tropical storm force, 39 mph. Here are some of the higher winds measured at coastal stations:

A personal weather station at Bald Point State Park near Apalachicola had sustained winds of 46 mph at 10 am EDT.
Cedar Key had sustained winds of 40 mph, gusting to 50 mph, at 3:43 pm EDT.
Punta Gorda had sustained winds of 37, gusting to 58, at 1:04 pm EDT.
St. Petersburg topped out at 34 mph, gusting to 48 mph, at 10:23 am EDT.

Two sets of tornadic rain bands moved through West Florida on Thursday, one between 2 am and 5 am, and the other between 10 am and 3 pm, spawning a total of five suspected tornadoes. The first band produced two EF-0 tornadoes: one with 75 mph winds that hit Myakka City, damaging 3 homes and 10 other buildings, and one with 80 mph winds that cut throughout the heart of Sun City, causing minor damage. NWS damage surveys will be occurring Friday in Fort Myers, Venice, Clearwater, and Gulfport to check out the damage swaths of the other three suspected tornadoes.

The Florida East Coast was hit by five suspected tornadoes. Only one caused an injury, a tornado that hit The Acreage in Palm Beach County at 6:45 am EDT. Two other tornadoes were reported in Broward and Palm Beach Counties, and two more were reported in coastal areas near the Georgia border.

Here are the highest storm surge values as of 7:00 pm EDT:

3.2' at Tampa (at McKay Bay Entrance)
2.5' at Clearwater Beach (near St. Petersburg)
4.5' at Cedar Key


Figure 1. MODIS satellite image of Tropical Storm Andrea at 1pm EDT Thursday, June 6, 2013. At the time, Andrea had top winds of 60 mph and was 5.7 hours away from landfall in Florida's Big Bend. Image credit: NASA.


Video 1. NASA animation of Andrea satellite images. More cool NASA images of Andrea are here.

The Atlantic hurricane season is getting longer
Andrea's formation in June continues a pattern of an unusually large number of early-season Atlantic named storms we've seen in recent years. Climatologically, June is the second quietest month of the Atlantic hurricane season, behind November. During the period 1870 - 2012, we averaged one named storm every two years in June, and 0.7 named storms per year during May and June. In the nineteen years since the current active hurricane period began in 1995, there have been fifteen June named storms (if we include 2013's Tropical Storm Andrea.) June activity has nearly doubled since 1995, and May activity has more than doubled (there were seventeen May storms in the 75-year period 1870 - 1994, compared to 6 in the 19-year period 1995 - 2013.) Some of this difference can be attributed to observation gaps, due to the lack of satellite data before 1966. However, even during the satellite era, we have seen an increase in both early season (May - June) and late season (November - December) Atlantic tropical storms. Dr. Jim Kossin of the University of Wisconsin looked at the reasons for this in a 2008 paper titled, "Is the North Atlantic hurricane season getting longer?" He concluded that there is a "apparent tendency toward more common early- and late-season storms that correlates with warming Sea Surface Temperature but the uncertainty in these relationships is high." He found that hurricane season for both the period 1950-2007 and 1980-2007 got longer by 5 to 10 days per decade (see my blog post on the paper.)


Figure 2. MODIS satellite image of 92L taken on June 6, 2013. Image credit: NASA.

Invest 92L in the Central Atlantic headed towards the Lesser Antilles
Satellite images show that a large and unusually well-organized tropical wave for so early in the season has developed in the Central Atlantic, midway between Africa and the Lesser Antilles Islands. The wave has a modest degree of spin and heavy thunderstorms. NHC designated this system 92L Thursday afternoon. High wind shear of 20 - 25 knots is ripping up the thunderstorms in 92L as they form, though, and wind shear is predicted to increase to 30 - 40 knots Thursday night through Monday, making development unlikely. The wave will likely bring heavy rain showers and gusty winds to the northern Lesser Antilles Islands beginning on Sunday night.

Jeff Masters

Street Flooding from Andrea (VarietyWorkshopRkstr)
Tropical Storm Andrea dumps rains in Treasure Island/St. Pete Beach, Fla., leaves street flooding behind.
Street Flooding from Andrea
Tropical Storm Andrea churns things up at Clearwater Beach, Fla.
Surf's Up!

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84hrs GFS....



Dissipates, then 168 hrs..... another low...

Member Since: Posts: Comments:
Quoting winter123:
Classic comma shape. Andrea is likely already subtropical.


Becoming baroclinc as expected.
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Quoting spathy:


Funny, when I quote that, 392...

Nothingness

an empty box
an empty brain
an empty walk
down lovers lane

sometimes an airplane nose
sometimes a human
each in its own way needs
an attitude adjustment

Good night
Sleep tight
Pedley's gone to Rubidoux
To fly a PA 12
Member Since: Posts: Comments:
Quoting spathy:
sar24
Thats a cool pic of Death Valley.
Do you live near there?

Change of subject would be nice and I will work around quoting.


Does this work?

390. sar2401 4:10 AM GMT
"Never mind. If you can figure out how to make things bold and in big letters, you can figure out how to quo"

End quote.
Spathy response:

Its quite arduous but does it relay the separation clearly enough ?

This is an actual question for anyone.
I see my quotes and how they appear. I understand the confusion.
What form would make it easier for those reading to comprehend the separation?

I know this is off topic and trivial to most but possibly others are having the same problem.




I was confused by what you were posting at first but after awhile I figured out you were having difficulties with the quoting feature. In the past, I have seen people reference the post number instead of actually quoting it. People would have to scroll up to see what post you are talking about but it might be a way around the issue you are having.
Member Since: September 7, 2007 Posts: 0 Comments: 253

Find more about Weather in Rydalmere, New South Wales, Australia
My Weather Forecast

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Center appears to be due west of Fernadinda Beach, approaching the FL/GA Border
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Quoting BaltimoreBrian:


I think so too. See how the winds turn.


Agreed
Member Since: Posts: Comments:
Andrea will get her feet wet again as she darts NE ahead of the trough but won't be a TS anymore. Transition has to be happening now unless that shallow convection near the center can blow up again.
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Quoting spathy:



Never mind. If you can figure out how to make things bold and in big letters, you can figure out how to quote...or not.
Member Since: October 2, 2004 Posts: 0 Comments: 16068
Quoting FIUStormChaser:


Looks like she's going into the Atlantic near Brunsiwick, GA.... Anyone else think age will make it off shore?



I think so too. We'll see how the winds turn at the obs sites.
Member Since: August 9, 2011 Posts: 26 Comments: 8630
388. JRRP
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Andrea was fun to follow. Like how she appeared quickly and now has vanished quickly; without copious amounts of rain or widespread destruction. More than the average amount of twisters for a TS though, that's what I'll remember most about Andrea.
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Quoting MTWX:
May or may not get her toes wet again (not.. in my opinion)

Looks to be crossing into SE Georgia now...

Link


Looks like she's going into the Atlantic near Brunsiwick, GA.... Anyone else think age will make it off shore?

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All the talk about quoting lead me to experiment. It was ugly. Apologies.
Member Since: August 9, 2011 Posts: 26 Comments: 8630
Reminds me of Irene...anemic center with little rain on the coast and heavy rain well inland

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There's a bunch of convection popping up to the NW of 92L's center, despite being right in the crosshairs of 50 knot shear. It's certainly being blown about, but it also isn't dying.

It'll be interesting to see what it looks like in the morning. Once the rest of it has all entered that jet of shear, it's improbable it will live for long. But that's what's fun about this - improbable isn't impossible.
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Andrea starting to look like subtropical
Member Since: March 12, 2013 Posts: 27 Comments: 53003
Good Night Peeps, Stay Safe - Stay Warm - Stay Dry - Keep Radios Handy...
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Quoting TylerStanfield:
Sorry. Last Blog Link Didnt work. Here you go

Check it out if you're Interested. Goodnight.

Nice blog, Tyler. I'm not complaining, but figures 1 and 3 don't show up for me. :-)
Member Since: October 2, 2004 Posts: 0 Comments: 16068
Classic comma shape. Andrea is likely already subtropical.
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Quoting ncstorm:


you have been COMPLAINING all day..aint it time for you to go to bed..it has to be exhausting..

Complaining? I thought I was trying to be helpful. My days are rarely exhausting, being a retired bum, but it sounds like you've had rough day.
Member Since: October 2, 2004 Posts: 0 Comments: 16068
Quoting sar2401:

It's hard to talk about anything substantive if I can't tell who's writing. Use the URL http://classic.wunderground.com. It's the old site and will work with any kind of computer. Unless you just want to be rebellious, how hard is it to go to the end of a text block and hit enter?


you have been COMPLAINING all day..aint it time for you to go to bed..it has to be exhausting..
Member Since: August 19, 2006 Posts: 13 Comments: 15666
Quoting spathy:



It's hard to talk about anything substantive if I can't tell who's writing. Use the URL http://classic.wunderground.com. It's the old site and will work with any kind of computer. Unless you just want to be rebellious, how hard is it to go to the end of a text block and hit enter?

Edit: As you can also see, none of your reply to me shows up when I quote back, since the computer thinks it's all part of a reply two posts back. That makes it impossible for anyone to figue out, for example, why I'm writing you about quoting.
Member Since: October 2, 2004 Posts: 0 Comments: 16068
Sorry. Last Blog Link Didnt work. Here you go

Check it out if you're Interested. Goodnight.
Member Since: June 2, 2013 Posts: 8 Comments: 1347
Quoting CaicosRetiredSailor:
Spurs 88-83 Heat - 1:34 remaining, 4th quarter
LeBron James makes a layup and Danny Green gets called for a foul on Dwyane Wade in the act of making a three, giving Wade three shots on the free throw line.


Yankees 6, Indians 4...heartbreaking, as usual. Oh, wait, you're talking about some other kind of sport...in June? What have we come to? :)
Member Since: October 2, 2004 Posts: 0 Comments: 16068
370. Mikla
Quoting sar2401:

Nice job. One of the better hook echos I've seen. Was it confirmed on the ground? If so, what was the rating?

You know what?... that is a good question. I saw some press that there was a confirmed spout, but now that I think of it, maybe it was a different one. So I should probably say "Unconfirmed" in my post above.
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369. MTWX
May or may not get her toes wet again (not.. in my opinion)

Looks to be crossing into SE Georgia now...

Link
Member Since: July 20, 2009 Posts: 23 Comments: 1393
Quoting Mikla:
Someone asked about the radar image for the Waterspout in the FL Keys last night. I made a quick flash where you can see the Velocity Couplet and the associated Hook Echo... here

You can right click on the image to use the controls (e.g., Back/Forward/Rewind/etc).

Nice job. One of the better hook echos I've seen. Was it confirmed on the ground? If so, what was the rating?
Member Since: October 2, 2004 Posts: 0 Comments: 16068
Spurs 88-83 Heat - 1:34 remaining, 4th quarter
LeBron James makes a layup and Danny Green gets called for a foul on Dwyane Wade in the act of making a three, giving Wade three shots on the free throw line.

Member Since: Posts: Comments:
Quoting beell:


If it last for more than 4 hours, see a meteorologist...

LOL. Never talk like that to an old man. :-)
Member Since: October 2, 2004 Posts: 0 Comments: 16068
Quoting beell:


Most of us are well aware of the reliability of models 10 days out.

You said the GFS did not show anything and asked for a link. I posted a graphic showing something.

:-)

Understood. It just didn't show what the OP was saying it showed. :-)
Member Since: October 2, 2004 Posts: 0 Comments: 16068
My New Blog I Posted Earlier

Goodnight Everyone!
Member Since: June 2, 2013 Posts: 8 Comments: 1347
361. beell
Quoting sar2401:

So, is it that area naked of clouds or what? I see the circulation but I'm having a hard visualizing the center.


If it lasts for more than 4 hours, see a meteorologist...
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Quoting TylerStanfield:

Just to the west of Hillard...

So, is it that area naked of clouds or what? I see the circulation but I'm having a hard visualizing the center.
Member Since: October 2, 2004 Posts: 0 Comments: 16068
Quoting spathy:



spathy, I'm going to assume you really don't understand how to quote properly.

After hitting "quote", you'll be in the reply box. Go all the way to the end of any inserted text, hit enter, and start typing.

It's really hard to tell who's writing what if you don't use the quote feature correctly.
Member Since: October 2, 2004 Posts: 0 Comments: 16068
Quoting BaltimoreBrian:
The center seems to be near Hilliard.


Just to the west of Hillard...
Member Since: June 2, 2013 Posts: 8 Comments: 1347
No is gone imo it was ts but was overlook because of Andrea if Andrea hadn`t occur the NHC would have been more intersted in this system.
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356. Mikla
Someone asked about the radar image for the unconfirmed Waterspout in the FL Keys last night. I made a quick flash where you can see the Velocity Couplet and the associated Hook Echo... here

You can right click on the image to use the controls (e.g., Back/Forward/Rewind/etc).
Member Since: Posts: Comments:
355. JRRP
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Quoting Tazmanian:
92L is a fighter so far

Unless shear decrease it will be gone in the next 24 hours.
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353. beell
Quoting sar2401:

A GFS model out 12 days that shows a 1008 low in the Gulf off Mexico means we have a TS headed into Texas and Louisiana? At some point, these models really do get off into la-la land somewhere.


Most of us are well aware of the reliability of models 10 days out.

You said the GFS did not show anything and asked for a link. I posted a graphic showing something.

:-)
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92L is a fighter so far

Member Since: May 21, 2006 Posts: 5091 Comments: 115239
Interesting ridge setup....



marked in red.
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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.