Category 4 Tropical Cyclone Ita Hits Queensland, Australia

By: Dr. Jeff Masters , 3:36 PM GMT on April 11, 2014

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Category 4 Tropical Cyclone Ita powered ashore along Australia’s Queensland coast near 9 pm local time (10 UTC) on Friday with sustained winds rated at 145 mph by the Joint Typhoon Warning Center. Satellite loops show that Ita has weakened considerably since landfall, with the cloud tops in the eyewall clouds warming. Radar loops from Cairns, Australia show torrential rains from Ita are affecting a large stretch of Queensland as the storm track parallel to the coast, just inland. Cape Flattery caught the eyewall, and had sustained winds of 70 mph (10-minute average), gusting to 99 mph. Cooktown recorded sustained winds of 48 mph, gusting to 71 mph. Fortunately, Ita appeared to be undergoing an eyewall replacement cycle at landfall, and was probably weaker than a Category 4 storm when it came ashore. Ita hit a portion of the coast that is relatively lightly populated, and damage should be nowhere near the $3.6 billion price tag of the last Category 4 cyclone to hit Queensland, Tropical Cyclone Yasi of February 2, 2011.


Figure 1. Visible satellite image of Tropical Cyclone Ita taken at 04 UTC April 11, 2014. At the time, Ita was a Category 4 storm with 145 mph sustained winds. Image credit: NASA.

Jeff Masters

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1084. allancalderini
5:11 AM GMT on April 14, 2014
Quoting 991. Dakster:


That is called a Putita.
Until now I saw your comment and you had me laughing out loud at 11:10pm
Member Since: October 15, 2011 Posts: 0 Comments: 4301
1083. Patrap
7:31 PM GMT on April 13, 2014
The Algae is towards the end here Grothar.

Member Since: July 3, 2005 Posts: 423 Comments: 128228
1082. beell
7:27 PM GMT on April 13, 2014
Quoting 1074. Sfloridacat5:
Pretty neat dry line setup showing up on radar.



Dryline to the south in TX. Cold front is the sharper boundary in OK. Intersection between Enid and OKC at the present time. ay see a warning or two near the cold front/dryline.
Member Since: September 11, 2007 Posts: 142 Comments: 16591
1081. LargoFl
7:18 PM GMT on April 13, 2014
Member Since: August 6, 2011 Posts: 4 Comments: 38407
1080. Patrap
7:18 PM GMT on April 13, 2014
I got that Algae video with a Twist uploading Grothar, from yesterday.
Member Since: July 3, 2005 Posts: 423 Comments: 128228
1079. LargoFl
7:17 PM GMT on April 13, 2014
storms may grow strong Monday......
Member Since: August 6, 2011 Posts: 4 Comments: 38407
1078. LargoFl
7:15 PM GMT on April 13, 2014
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
150 PM CDT SUN APR 13 2014

ALZ011>015-017>050-141900-
MARION-LAMAR-FAYETTE-WINSTON-WALKER-BLOUNT-ETOWAH -CALHOUN-CHEROKEE-
CLEBURNE-PICKENS-TUSCALOOSA-JEFFERSON-SHELBY-ST. CLAIR-TALLADEGA-
CLAY-RANDOLPH-SUMTER-GREENE-HALE-PERRY-BIBB-CHILT ON-COOSA-TALLAPOOSA-
CHAMBERS-MARENGO-DALLAS-AUTAUGA-LOWNDES-ELMORE-MO NTGOMERY-MACON-
BULLOCK-LEE-RUSSELL-PIKE-BARBOUR-
150 PM CDT SUN APR 13 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

FLOODING WILL CONTINUE ON A FEW SOUTH CENTRAL ALABAMA RIVERS.
PLEASE REFER TO THE LATEST RIVER FLOOD STATEMENTS FOR SPECIFIC
STAGE DETAILS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE MONDAY AFTERNOON INTO
MONDAY NIGHT FOR ALL OF CENTRAL ALABAMA. THESE STORMS WILL BE
CAPABLE OF PRODUCING LOCALIZED FLOODING...DAMAGING WINDS...
AND LARGE HAIL. AN ISOLATED BRIEF TORNADO CANNOT BE RULED OUT.

A COLD FRONT WILL MOVE THROUGH CENTRAL ALABAMA EARLY TUESDAY.
WINDS OF 10 AND 20 MPH WITH HIGHER GUSTS WILL OCCUR BOTH AHEAD AND
BEHIND THE FRONT.

TEMPERATURES ON WEDNESDAY MORNING MAY DROP NEAR FREEZING FOR
AREAS GENERALLY ALONG AND NORTH OF THE INTERSTATE 20 CORRIDOR. THIS
WOULD LIKELY ONLY BE FOR A FEW HOURS...BUT PRECAUTIONS MAY BECOME
NEEDED.

FLOODING WILL CONTINUE ON A FEW CENTRAL ALABAMA RIVERS...PERHAPS
UNTIL THURSDAY...ESPECIALLY ON THE LOWER TOMBIGBEE...LOWER BLACK
WARRIOR...AND LOWER CAHABA. ADDITIONAL RAINFALL ON MONDAY AND
TUESDAY COULD PROLONG AREAS OF RIVER FLOODING. PLEASE REFER TO THE
LATEST RIVER FLOOD STATEMENTS FOR SPECIFIC DETAILS.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT MAY BE NEEDED
MONDAY.

$$
Member Since: August 6, 2011 Posts: 4 Comments: 38407
1077. LargoFl
7:14 PM GMT on April 13, 2014
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE JACKSON MS
931 AM CDT SUN APR 13 2014

..PERIODS OF POTENT STORMS AND HEAVY RAINFALL EXPECTED LATE TONIGHT
INTO MONDAY EVENING...
Member Since: August 6, 2011 Posts: 4 Comments: 38407
1076. sar2401
7:13 PM GMT on April 13, 2014
Quoting Sfloridacat5:
Oklahoma City has SSW winds of 30 mph gusting to 50 mph. Looks like dry air is trying to move into Central Oklahoma.

Looking to see where the dry line is setting up.


It's very windy in SE Alabama as well. We are getting 25 mph gusts directly from the south. I assume it's pressure gradient winds from the low in Oklahoma. It's 83 with a dewpoint of 59. I'm getting a little concerned about tomorrow. We should get two waves, the first in the early morning. It looks like that will be all elevated stuff with nothing severe. The second wave, if we get any clearing, could be the issue, as the air destabilizes and the main line should be arriving in the early evening, which is typically when we get severe storms. I see the SPC has backed off some, as our 30% red circle is now gone, but the 5% zone has expanded east and north. It looks like the SPC has a little less confidence in how severe the storms will get here, which is fine by me.

We do have a bigger issue with flooding if these storms drop the forecaster 2-3 inches. They've had the gates open at Ft. Gaines dam trying to drop the level of Lake Eufaula before the storms get here, but it's having a hard time making progress against the upstream inflows. If we get more than the 3 inches, or it all falls in a short period of time, we'll have some more flooding problems, just like last week.
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1075. TylerStanfield
7:12 PM GMT on April 13, 2014
Quoting 1069. Climate175:
Is the ITCZ rising north?

Not quite yet. It's still hanging back, and hasn't moved much.

It should begin to gain latitude as we near May, but because of how far south it is currently, my best guess is that our first tropical wave won't exit Africa and disconnect from the ITCZ until mid May.
Member Since: June 2, 2013 Posts: 8 Comments: 1285
1074. Sfloridacat5
7:12 PM GMT on April 13, 2014
Pretty neat dry line setup showing up on radar.
Member Since: September 16, 2007 Posts: 0 Comments: 6789
1073. Climate175
7:11 PM GMT on April 13, 2014
Quoting 1057. TylerStanfield:

It's not precisely a tropical wave, it's associated with the monsoonal trough over western Africa.

We don't really see "Tropical Waves" exit Africa until May.
Does the monsoonal trough or ITCZ determine the waves, or is it the same thing?
Member Since: September 24, 2013 Posts: 7 Comments: 4072
1072. wunderkidcayman
7:11 PM GMT on April 13, 2014
New blog
Member Since: June 13, 2009 Posts: 2 Comments: 11948
1071. WunderAlertBot (Admin)
7:11 PM GMT on April 13, 2014
JeffMasters has created a new entry.
1070. Dakster
7:11 PM GMT on April 13, 2014
Quoting 1054. whitewabit:


Think they will wait till the Beta goes live for everyone .. which could be sometime this coming week .. but have no advanced knowledge ..


Thanks WhiteWabit.

I get the feeling it is almost there.
Member Since: March 10, 2006 Posts: 0 Comments: 10248
1069. Climate175
7:10 PM GMT on April 13, 2014
Quoting 1057. TylerStanfield:

It's not precisely a tropical wave, it's associated with the monsoonal trough over western Africa.

We don't really see "Tropical Waves" exit Africa until May.
Is the ITCZ rising north?
Member Since: September 24, 2013 Posts: 7 Comments: 4072
1068. Grothar
7:10 PM GMT on April 13, 2014
I'm off. See you guys later.
Member Since: July 17, 2009 Posts: 71 Comments: 26117
1067. LargoFl
7:09 PM GMT on April 13, 2014
MZ001-140300-
SYNOPSIS FOR THE GULF OF MEXICO
1054 AM EDT SUN APR 13 2014

.SYNOPSIS...A RIDGE EXTENDING ACROSS THE N GULF WILL MAINTAIN
MODERATE TO LOCALLY FRESH SE RETURN FLOW THROUGH MON. AN UNSEASONABLY
STRONG COLD FRONT WILL MOVE INTO NW WATERS MON NIGHT WITH STRONG
GALES EXPECTED BEHIND IT OVER THE WESTERN GULF. THE FRONT WILL
STRETCH FROM TAMPA BAY TO THE FAR EASTERN BAY OF CAMPECHE TUE
NIGHT THEN DISSIPATE FROM FORT MYERS FLORIDA TO NORTHERN YUCATAN
PENINSULA WED NIGHT. HIGH PRES WELL TO THE N WILL DRIVE MOSTLY
MODERATE E-SE FLOW ACROSS THE GULF THU AND THU NIGHT.

$$

Member Since: August 6, 2011 Posts: 4 Comments: 38407
1066. pablosyn
7:08 PM GMT on April 13, 2014
Quoting 1040. sar2401:

Yes, very odd, especially in the southern hemisphere autumn. What do the local meteorologists have to say about this?


They said that by chance we were in an ideal condition for the formation of them. The most favorable period here in southern Brazil, as well as in the U.S., is the months of spring and summer. But sometimes we have isolated events of tornadoes in winter. We were with the same meteorological conditions when tornadoes hit our area in winter ... on one side there was heat, humidity and other side was dry and cold weather, and in the midst of it all there was strong wind shear that also brought moisture and heat the Amazon region. Not to mention of course the cold front enhanced by this massive hurricane on the coast. I interpreted this explanation as an "accident" had this small outbreak of tornadoes ... I could give an example of Hurricane Catarina that hit us 10 years ago, was something quite rare and had good conditions in the atmosphere to form it .. . guess it's the same situation for 3 tornadoes hit our area this weekend.
Member Since: October 29, 2012 Posts: 0 Comments: 232
1065. ChillinInTheKeys
7:08 PM GMT on April 13, 2014
Quoting 997. sar2401:

Holy cow! I'm in a National Geographic video and didn't even know it. It shows the huge mudslide we had in Rio Nido in February, 1998. At 2:01, I'm the deputy on the lower left getting the bag of belongings handed to him. My mustache was still black back then. :-) I don't remember any film crews there but I guess there must have been.

The hillside was still moving, and we were getting residents in for 10 minutes each so they could get their most valuable personal items. The geologists had installed slippage monitors, and there were a couple of National Guardsmen on the top of the hill that were supposed to be checking the gauges. If the slide started to move, they were supposed to set off a siren. Our only instructions were, if the siren went off, was to RUN! Thankfully, I didn't have to find out if I could outrun a landslide that day.

I got to meet the famous AlGore also. He was the VP then, and decided he wanted to visit the area and console the residents. It took two days, working with the Secret Service, to plan for the visit, while we had to shut down all the other work we were doing to help people get their stuff, with another rain storm on the way. The whole area was a mass of mud, and I guess no one told the VP that he needed to dress different than a day in DC. He had a real nice pair shoes on when he stepped out of the limo. We scrounged up a pair of mud boots so he could complete his tour. He seemed like a nice guy to me. He took about 45 minutes to meet with the residents, and came over to the command post and shook our hands, thanking us for our work. I'm sure it was a good photo op for him, but our FEMA requests did get handled a lot quicker after his visit.


You still have 14 minutes 58 seconds of fame to go!!! ;)
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1064. Patrap
7:07 PM GMT on April 13, 2014
Mesoscale Discussion 0335
%u2013 Concerning: HEAVY SNOW
%u2013 Is
Member Since: July 3, 2005 Posts: 423 Comments: 128228
1063. wunderkidcayman
7:07 PM GMT on April 13, 2014
Quoting 1057. TylerStanfield:

It's not precisely a tropical wave, it's associated with the monsoonal trough over western Africa.

We don't really see "Tropical Waves" exit Africa until May.

Actually we do see them in April but usually within the last 2 weeks of April
Member Since: June 13, 2009 Posts: 2 Comments: 11948
1062. LargoFl
7:07 PM GMT on April 13, 2014
Quoting 1060. Grothar:


Hey, you've all had your share the past few weeks. We haven't gotten a drop. Steal some from St. Pete. :)
LOL GRO..my rain comes tuesday they say..we'll see,doesnt look as strong this time around unless something changes..
Member Since: August 6, 2011 Posts: 4 Comments: 38407
1061. LargoFl
7:05 PM GMT on April 13, 2014
wont be long before the 90's arrive again,so far seabreeze is keeping it out of my area..
Member Since: August 6, 2011 Posts: 4 Comments: 38407
1060. Grothar
7:05 PM GMT on April 13, 2014
Quoting 1050. LargoFl:
warm and sunny by me all day long..send a shower or two up here GRO lol..


Hey, you've all had your share the past few weeks. We haven't gotten a drop. Steal some from St. Pete. :)
Member Since: July 17, 2009 Posts: 71 Comments: 26117
1059. wunderkidcayman
7:05 PM GMT on April 13, 2014
Quoting 1046. Climate175:
That wave is about to leave Africa.

Really good looking maybe first official trop wave of the year
Member Since: June 13, 2009 Posts: 2 Comments: 11948
1058. Sfloridacat5
7:04 PM GMT on April 13, 2014
saw tornado watch already posted - delete
Member Since: September 16, 2007 Posts: 0 Comments: 6789
1057. TylerStanfield
7:04 PM GMT on April 13, 2014
Quoting 1046. Climate175:
That wave is about to leave Africa.

It's not precisely a tropical wave, it's associated with the monsoonal trough over western Africa.

We don't really see "Tropical Waves" exit Africa until May.
Member Since: June 2, 2013 Posts: 8 Comments: 1285
1056. Patrap
7:04 PM GMT on April 13, 2014
College of DuPage Meteorology
Severe Weather and Flash Flood Warnings
Note: This page will reload every 2 minutes. Warnings are listed with the most recent first.
Click on the station ID to bring up list of recent severe weather statements.
SVR T-STORM WARNING WICHITA KS - KICT 134 PM CDT SUN APR 13 2014
SVR T-STORM WARNING TOPEKA KS - KTOP 124 PM CDT SUN APR 13 2014
SVR T-STORM WARNING WICHITA KS - KICT 122 PM CDT SUN APR 13 2014
SVR T-STORM WARNING WICHITA KS - KICT 1258 PM CDT SUN APR 13 2014
SVR T-STORM WARNING TOPEKA KS - KTOP 1236 PM CDT SUN APR 13 2014
SVR T-STORM WARNING TOPEKA KS - KTOP 1211 PM CDT SUN APR 13 2014
Member Since: July 3, 2005 Posts: 423 Comments: 128228
1055. Grothar
7:04 PM GMT on April 13, 2014
Quoting 1045. Jedkins01:


Good old south Florida... The dry season is just a couple week from being over down there, you might be seeing early signs of it end already.

I would imagine you guys are going to have a terrible bug season down there, as you didn't have much of a winter, I'd say you guys experienced almost a Yucatan of Mexico or Cuba winter. Most of the cold events hear got stopped by high pressure to your southeast before reaching you.


We didn't really have any winter. We were all looking forward to a little cold spell, but never really got it. Very warm and humid, too. A good cold spell usually kills the fleas and ticks a little, so we'll see.
Member Since: July 17, 2009 Posts: 71 Comments: 26117
1054. whitewabit (Mod)
7:04 PM GMT on April 13, 2014
Quoting 1041. Dakster:

Is the new logo unveiled tomorrow?


Think they will wait till the Beta goes live for everyone .. which could be sometime this coming week .. but have no advanced knowledge ..
Member Since: August 17, 2005 Posts: 362 Comments: 31358
1053. PalmBeachWeather
7:03 PM GMT on April 13, 2014
A very heavy 30% chance of rain happening right now...
Member Since: October 3, 2008 Posts: 0 Comments: 5858
1052. Michfan
7:02 PM GMT on April 13, 2014
Quoting 1045. Jedkins01:


Good old south Florida... The dry season is just a couple week from being over down there, you might be seeing early signs of it end already.

I would imagine you guys are going to have a terrible bug season down there, as you didn't have much of a winter, I'd say you guys experienced almost a Yucatan of Mexico or Cuba winter. Most of the cold events hear got stopped by high pressure to your southeast before reaching you.


Yeah we already have gnats all over the place. Not looking forward to the mosquitoes this year.
Member Since: September 7, 2007 Posts: 0 Comments: 1731
1051. Patrap
7:02 PM GMT on April 13, 2014

SEL4

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 74
NWS STORM PREDICTION CENTER NORMAN OK
200 PM CDT SUN APR 13 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF
CENTRAL AND EASTERN OKLAHOMA
NORTH TEXAS

* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 200 PM UNTIL
800 PM CDT.

* PRIMARY THREATS INCLUDE...
A COUPLE TORNADOES POSSIBLE
SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
TO 2.5 INCHES IN DIAMETER POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHWEST OF
BARTLESVILLE OKLAHOMA TO 60 MILES WEST SOUTHWEST OF SHERMAN
TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 73...

DISCUSSION...THUNDERSTORMS ARE BEGINNING TO FORM ALONG THE COLD
FRONT IN NORTH CENTRAL OK...AND WILL SOON FORM ALONG THE DRYLINE
SOUTHWARD INTO NORTH TX. STRONG INSTABILITY WILL PROMOTE SUPERCELL
STRUCTURES WITH DRYLINE STORMS...CAPABLE OF VERY LARGE HAIL AND
DAMAGING WINDS. THE TORNADO THREAT APPEARS GREATEST LATE THIS
AFTERNOON AND EVENING OVER SOUTHEAST OK...WHERE STRONGEST LOW LEVEL
SHEAR AND BOUNDARY LAYER MOISTURE WILL BE PRESENT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26030.


...HART
Member Since: July 3, 2005 Posts: 423 Comments: 128228
1050. LargoFl
7:02 PM GMT on April 13, 2014
Quoting 1031. Grothar:


Yes. But those usually come in waves. This has been a steady, heavy rain since early this morning, yet I don't see much on radar. Very odd.
warm and sunny by me all day long..send a shower or two up here GRO lol..
Member Since: August 6, 2011 Posts: 4 Comments: 38407
1049. Climate175
7:01 PM GMT on April 13, 2014
There was a wave that left Africa yesterday that had a great spin.
Member Since: September 24, 2013 Posts: 7 Comments: 4072
1048. Climate175
7:00 PM GMT on April 13, 2014
Quoting 1041. Dakster:
Is the new logo unveiled tomorrow?
Possibly.
Member Since: September 24, 2013 Posts: 7 Comments: 4072
1047. hydrus
7:00 PM GMT on April 13, 2014
Quoting 1033. wunderkidcayman:

Hmm that's my birthday April 27th
Greetings WKC..How old will you be.?
Member Since: September 27, 2007 Posts: 1 Comments: 21173
1046. Climate175
6:59 PM GMT on April 13, 2014
That wave is about to leave Africa.
Member Since: September 24, 2013 Posts: 7 Comments: 4072
1045. Jedkins01
6:58 PM GMT on April 13, 2014
Quoting 1024. Grothar:


Our gauge just recorded over 2 inches of rain since this morning and still raining heavily


Good old south Florida... The dry season is just a couple week from being over down there, you might be seeing early signs of it end already.

I would imagine you guys are going to have a terrible bug season down there, as you didn't have much of a winter, I'd say you guys experienced almost a Yucatan of Mexico or Cuba winter. Most of the cold events hear got stopped by high pressure to your southeast before reaching you.
Member Since: August 21, 2008 Posts: 0 Comments: 7434
1044. hydrus
6:58 PM GMT on April 13, 2014
Member Since: September 27, 2007 Posts: 1 Comments: 21173
1043. wunderkidcayman
6:58 PM GMT on April 13, 2014
Quoting 1037. Climate175:
When do you think things will get going in the Caribbean and Gulf as convection wise, it's is as quiet as a mouse.

I think very soon maybe 5 10 15 days time
Member Since: June 13, 2009 Posts: 2 Comments: 11948
1042. TylerStanfield
6:58 PM GMT on April 13, 2014
Quoting 1038. Grothar:


Yep, there it is.


Hmm. Easterly flow.

;)
Member Since: June 2, 2013 Posts: 8 Comments: 1285
1041. Dakster
6:57 PM GMT on April 13, 2014
Is the new logo unveiled tomorrow?
Member Since: March 10, 2006 Posts: 0 Comments: 10248
1040. sar2401
6:55 PM GMT on April 13, 2014
Quoting pablosyn:


yeah, thank you. Yesterday the winds reached almost 65 mph here in Porto Alegre, Rio Grande do Sul, Brazil. Today the winds reached until now between 35-40 mph. And now is very cold...Now it's 03:43 P.M. and we have 19ºC with feels like 13ºC because of wind. We must point out the small wave of tornadoes (which for us is a very high number of tornadoes for a short period of time) that hit here and RS tornado that struck Paraguay. The month of April here in Southern Brazil is the month with the lowest incidence of severe weather in the year ... April tornadoes are very rare, even more than we are dealing with 3 tornadoes.

Yes, very odd, especially in the southern hemisphere autumn. What do the local meteorologists have to say about this?
Member Since: October 2, 2004 Posts: 0 Comments: 14958
1039. Climate175
6:52 PM GMT on April 13, 2014
Quoting 1030. Gearsts:
Dry and stable everywhere?
Hmm, i hope not.
Member Since: September 24, 2013 Posts: 7 Comments: 4072
1038. Grothar
6:52 PM GMT on April 13, 2014
Quoting 1026. sar2401:

I've been looking at your area on radar, and it seems like the storms keep forming right offshore and then moving over you. It's a tiny feature. I don't know a thing about south Florida weather. Is that some kind of sea breeze front, or what? It seems like south Florida can get rain basically out of almost anything hanging around.


Yep, there it is.

Member Since: July 17, 2009 Posts: 71 Comments: 26117
1037. Climate175
6:52 PM GMT on April 13, 2014
Quoting 1033. wunderkidcayman:

Hmm that's my birthday April 27th
When do you think things will get going in the Caribbean and Gulf as convection wise, it's is as quiet as a mouse.
Member Since: September 24, 2013 Posts: 7 Comments: 4072
1036. sar2401
6:51 PM GMT on April 13, 2014
Quoting Grothar:


Yes. But those usually come in waves. This has been a steady, heavy rain since early this morning, yet I don't see much on radar. Very odd.

I've been watching it on the nation mosaic (Link) and it looks like it's being fed by some feature directly east of you in the Bahama Channel. Don't know what it is, but it's been pretty steady all morning and doesn't seem to want to quit.
Member Since: October 2, 2004 Posts: 0 Comments: 14958
1035. TylerStanfield
6:50 PM GMT on April 13, 2014
Well folks, the time is almost here for us to say hello to the new look of Weather Underground.


I may pick up a trace of rain for this line, though it looks like my best chance for measurable rainfall will likely be tomorrow with scattered thunderstorms.
Member Since: June 2, 2013 Posts: 8 Comments: 1285
1034. Jedkins01
6:50 PM GMT on April 13, 2014
Quoting 1005. Sfloridacat5:
Lived many years in Central Oklahoma and 17 years in the Fort Myers area.
The main difference in T storms I've noticed:

Oklahoma
Gust front straight winds way more intense (114 mph straight winds at the local airport with one severe storm). It was common to get 60-80 mph straight winds with supercell T storms.
Hail - hail is way more common with central plains severe T storms. We would get at least a couple real bad hail storms each year.
Tornadoes - EF4-EF5 tornados can happen on any given year. The neighborhood I used to lived in has had several EF4-EF5 tornadoes go right through it(I graduated from Moore High School a suburb of OKC).

Florida
Rainfall - storms tend to develop right over your location and sit with very little movement. It's not uncommon to see 3"-5" of rain in one afternoon.
Lightning - lightning is extreme. Florida T storms contain incredible amount of lightning (very dangerous).
Pine trees behind the house have been hit several times.
Hail - very rare to see hail (it occasionally does happen, but its rare compared to central plains supercells)
Tornadoes - actually very common, but they are usually EF0 - EF2, with most being in the EF0 range in my area.

Central Fl. is know for having stronger tornadoes than down in my area.


Good assessment in differences, we definitely don't see nearly as much hail in Florida, just too much warm air with height, Oklahoma can have winter-like cold air in the upper levels move over the top of 90 degree temps with 60 to 70 degree dewpoints, that leads to massive hail, the extreme downburst winds, and strong tornadoes, providing you also have deep layer shear.

Part of the reason for seeing such strong wind gusts from thunderstorms in that region is due to the colder air aloft that can be present, but more importantly its the deep layer shear.

In Florida, we only get rotating supercells when there is less heat and instability early in the year. In summer when instability is high, we don't see much shear. Shear allows thunderstorms to maintain their updrafts which in turn leads to more violent downdrafts, larger hail, and stronger and longer tracked tornadoes, providing there is high instability, give or take.

In Florida, we often get extremely high instability during the summer, and this combined with sea breezes can lead to very strong updrafts, which leads to explosive thunderstorm growth and thus the insane lightning. However, the lack of shear means that severe weather is short lived, as the strong downdrafts that occur cutoff the energy source, killing the thunderstorm. This lack of shear limits the potential for thunderstorms in Florida to produce larger hail, 80 mph winds, and strong tornadoes. Although it does happen on the occasion that we do see wind shear during the summer.
Sometimes it can feel like we have really long live thunderstorms during the summer, but most of time, the individual cells are really short lived, but when they die they lead to near cells nearby which can cause a thunderstorm event to last for a few hours, even though each cell is short lived.

Occasionally an upper low traverses Florida during the summer, which can enhance severe weather threat including tornadoes that are stronger. Again this is more rare though.


Part of what also helps with the strong wind events in the southern plains is a lack of trees. The lack of friction always the downbursts to push outward and farther as they encounter less friction.

That 114 mph wind though is more rare and isolated that you experienced, consider yourself pretty lucky
( you might say unlucky, depending on your opinion lol), as it wasp probably a very strong derecho, which due happen from time to time, but usually 75 to 85 mph is more likely in the stronger supercells.

Similar to that 80 to 90 mph event I experienced from a sea breeze cell, I was lucky as that is unusual for a popup sea breeze storm, but it does happen ever one in a while.
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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.

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