Dr. Jeff Masters' WunderBlog |
|
| Posted by: Dr. Jeff Masters, 4:02 PM GMT en Marzo 14, 2012 | +32 |
| Permalink | A A A |
|
|
Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.
|
Tropical Blogs
Tropical Weather Stickers®
Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 — Blog Index
That's easy for you to say.
It snowed a bit here last night and I've been pushing wood into the stove all day today.
Winter came early here in October, went away for December, but now it's back. Got lucky day before yesterday, forecast was for a foot of new. But the storm strangely went south....
I can't scroll past them until they play through or whatever.
Simpletons sadly though, gather more attention than those with a level head and actual knowledge of the subject.
If it weren't for the media, December 21st would pass as any other day.
Tropical Cyclone Advice #6
TROPICAL CYCLONE LUA, CATEGORY TWO (16U)
3:00 PM WST March 15 2012
===========================
At 2:00 PM WST, Tropical Cyclone Lua, Category Two (970 hPa) located at 15.7S 113.4E or 670 km north northwest of Karratha 750 km northwest of Port Hedland has 10 minute sustained winds of 60 knots with gusts of 85 knots. The cyclone is reported as moving east southeast at 2 knots.
Storm Force Winds
=================
80 NM from the center in northeast quadrant
40 NM from the center in southeast quadrant
40 NM from the center in southwest quadrant
80 NM from the center in northwest quadrant
Gale Force Winds
=============
180 NM from the center in northeast quadrant
120 NM from the center in southeast quadrant
120 NM from the center in southwest quadrant
180 NM from the center in northwest quadrant
Dvorak Intensity: T4.0/4.0/D1.0/24 HRS
Lua has moved slowly over the last few hours but should accelerate to the southeast during Friday and early morning Saturday, towards the east Pilbara coast. Lua is expected to intensify into a severe tropical cyclone tonight and remain severe through to landfall.
Gales are not expected in coastal areas today or overnight, but gales are expected to develop during Friday or early Saturday between Mardie and Bidyadanga as the cyclone approaches the coast . Very destructive winds with wind gusts in excess of 170 kilometres per hour are expected to develop in coastal areas near the centre of the cyclone during Saturday. Gales are expected to extend to coastal areas between Cape Leveque and Bidayadanga during Saturday and then to inland eastern Pilbara areas later on Saturday.
Heavy rainfall is expected in coastal areas of the east Pilbara and west Kimberley during Thursday and Friday.
Tropical Cyclone Watches/Warnings
=================================
A Cyclone WARNING has been declared for coastal areas from Bidyadanga to Mardie, including Port Hedland, Karratha and Dampier.
A Cyclone WATCH is current for coastal areas from Cape Leveque to Bidyadanga including Broome, and the eastern inland Pilbara including Newman and Telfer.
Forecast and Intensity
===============
12 HRS: 16.1S 114.6E - 70 knots (CAT 3)
24 HRS: 17.0S 116.5E - 80 knots (CAT 3)
48 HRS: 20.4S 120.0E - 80 knots (CAT 3)
72 HRS: 26.7S 120.2E - 30 knots (Tropical Low)
Additional Information
=======================
Position is based on visible imagery and some recent microwave passes.
Dvorak analysis Visible imagery yielded curved band wrap of around 0.8-0.9 giving a DT of 3.5. MET is 4.0 based on a trend of D, PAT is 4.0 and FT is set to 4.0. Final intensity estimate is set to 60 knots 10-min mean, with ASCAT showing some 50 knot winds to the north of the system.
The current moderate easterly shear is expected to reduce in the next 24 hours and become very favorable for development together with strong upper divergence as an upper trough approaches. This will be followed by unfavorable shear as upper northwesterlies increase over the system but this may not occur in time to weaken the cyclone prior to landfall on Saturday.
Movement has been very slow in the last few hours as the steering influence of the upper ridge to the southwest is balanced by the vigorous northwesterly monsoonal flow. By tonight the system should begin to move to the southeast and a faster southeasterly track is forecast for Friday as the ridge weakens and the monsoonal flow dominates. There is very good general agreement across model guidance for this scenario with a coastal crossing on Saturday, although the timing of this varies somewhat.
The next tropical cyclone bulletin on Tropical Cyclone Lua from the Perth Tropical Cyclone Warning Center will be issued at 10:30 AM UTC..
On rare occasions with previous computers, which have tended to be around 3to4 hardware and 2to3 OperatingSystem generations removed from the latest.
(I've always gotten my browsing computers for free as they've become too slow for professional use. Even then I don't switch until after the old one blows up or its OS loses support.)
With my latest(old-but-free)computer, occasionally they've kept the CPU at max and fans at max, but no freeze so far... which may change when I take a look at the previous page
Then again, WU occasionally gets screwed up by its advertisers. You may be experiencing ad-farm freeze, in which your computer keeps trying to contact an advertiser's server even though their server keeps ignoring your computers request.
Australia's climate warming at alarming rate, report warns
15.03.2012 06:04:50 | The Telegraph (UK)
Australia's climate is warming at an alarming rate and oceans around the continent have been rising by as much as a centimetre a year, according to a new government report.
The snapshot, produced by the national science and weather agencies, found climate changes have been occurring at an increasingly rapid pace. It predicts fiercer storms, increased drought and more intensive periods of rainfall over the coming decades. According to the report, based on observations and peer-reviewed research by government scientists, Australia has recorded its 13 hottest years on record since 1997 – and average day and night-time temperatures are now almost a degree higher than they were a century ago. Sea-surface temperatures increased by about 0.8C since 1910 and hit a record high in 2010. Each decade in Australia has been warmer than the previous decade since the 1950s. The report, by the Bureau of Meteorology and the Commonwealth Scientific and Industrial Research Organisation [CSIRO], says the changes appear to have been mostly caused by human-induced carbon emissions and are not due to nature alone. Following a dip in carbon emissions during the financial crisis, carbon dioxide levels in the atmosphere reached 390 parts per million last year, the highest level in 800,000 years.
"It is very likely (at least 90 per cent likelihood) that most of the observed global warming since the mid-20th century is due to increases in greenhouse gases from human activities," the report says. "Human activities also have influenced ocean warming, sea-level rise, and temperature extremes. It is very unlikely (less than ten per cent likelihood) that 20th century warming can be explained by natural variability alone." Australia has been particularly hard-hit by global warming, with sea levels and ocean temperatures around the continent rising faster than world averages. In the past 18 months, Australia has endured two La Ninas – leading to the nation recording its wettest two-year period since instrumental records began in the 1880s. The rainfall led to flooding in Queensland last year that killed dozens of people and caused damage to farms, houses and business of about $AUS30 billion.
Heavy rainfall over the recent summer has caused further bouts of heavy flooding across vast swathes of territory in New South Wales, Victoria and Queensland. This led to the highest two-year average rainfall on record. Despite the recent cooler, rain-inducing La Nina weather pattern, increasing greenhouse gas concentrations are expected to lead to hotter weather in the coming decades. The report says average temperatures could rise by up to 5C by 2070. "Global changes of this magnitude happen very rarely," said Karl Braganza, the head of climate monitoring at the Bureau of Meteorology. "They happen when asteroids strike, they happen when there's planetary volcanic activity. They are happening now because we are digging up fossil fuels and basically burning them all. And we are doing that very, very rapidly." The snapshot comes months before Australia's controversial tax on carbon emissions by heavy polluters comes into effect on July 1. The scheme will impose a tax of $AUS23 per ton on emissions and will be the world's biggest carbon reduction scheme outside Europe.
Those homes in the security video films from the blog yesterday showed what happens to well-built homes when hit by enough wind. They just shredded away. One roof lifted off in a single unit so it must have been a well-built roof. Unless homes are "bunker style" reinforced concrete they are at risk. I have a fascination with severe weather because it's so awesome but at the same time I don't want it anywhere near people. Nature of course does what it does where it wants and we can only stand by. If I lived in the plains or a high-risk area I would have a super-strong safe room. People walked out of one in the Oklahoma City tornado to find their closet-sized safe room was the only thing left standing for blocks. And they were totally o.k.
If you use Firefox and use addon flashblock, then YOU control when those animations are run. Also it will no repeat over and over.
SEVERE THUNDERSTORM WARNING
NCC039-TNC123-151245-
/O.NEW.KMRX.SV.W.0048.120315T1207Z-120315T1245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
807 AM EDT THU MAR 15 2012
THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CHEROKEE COUNTY IN SOUTHWEST NORTH CAROLINA...
MONROE COUNTY IN EAST TENNESSEE...
* UNTIL 845 AM EDT
* AT 801 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 12
MILES SOUTHEAST OF MADISONVILLE...AND MOVING EAST AT 25 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
MURPHY...VIOLET...HIAWASSE DAM...UNAKA...CITICO AND MARBLE.
LAT...LON 3519 8430 3521 8430 3525 8437 3546 8432
3545 8398 3541 8401 3537 8400 3535 8403
3524 8400 3522 8395 3526 8384 3526 8379
3499 8401
TIME...MOT...LOC 1206Z 274DEG 21KT 3537 8422
$$
The general problem with earthquake prediction is that earthquakes happen so frequently (including strong ones) that you need a significant amount of evidence that your method is indeed predicting quakes and it isn't happening by random chance. For example, on average a magnitude 6 earthquake is happening roughly every two or three days, and monster quakes greater than magnitude 8 happen on average once or twice a year.
So when someone says there will be a major quake this year (or any year), they will most likely be correct. When someone says there will be a strong quake tomorrow (> 6M), again there is a good chance they will be correct.
If you can predict the day and location of these types of quakes and show statistically significant skill in doing so (both present day and historically), then there are a lot of geophysicists who would want to talk to you.
ZCZC SPCSWOD48 ALL
ACUS48 KWNS 150834
SPC AC 150834
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0334 AM CDT THU MAR 15 2012
VALID 181200Z - 231200Z
...DISCUSSION...
ECMWF/GFS CONTINUE TO SUGGEST A PROGRESSIVE...ALBEIT
SLOW-MOVING...UPPER TROUGH WILL TRANSLATE ACROSS THE WRN U.S. INTO
THE PLAINS DURING THE MEDIUM RANGE PERIOD. LEADING EDGE OF STRONGER
FLOW ALOFT SHOULD SPREAD ACROSS THE LEE TROUGH/DRY LINE FROM WRN NEB
INTO WEST TX BY SUNDAY EVENING. ANY STORMS THAT DEVELOP ALONG THIS
BOUNDARY COULD POTENTIALLY ORGANIZE AS 500MB FLOW INCREASES IN
EXCESS OF 50-70KT. BY DAY5 STRONGER FORCING WILL SPREAD DOWNSTREAM
AND THE GREATEST SEVERE THREAT IS EXPECTED TO EXTEND FROM THE KS/OK
BORDER...SWWD INTO THE HILL COUNTRY OF TX. BEYOND DAY5 THERE IS
CONSIDERABLE UNCERTAINTY REGARDING THE SPEED/MOVEMENT OF THE UPPER
TROUGH...AS WELL AS CONVECTIVE MODE.
..DARROW.. 03/15/2012
Not much severe wording, but well see...
We've discussed this already on the blog. It's a coronal hole. There's nothing mysterious or magical about it. They happen quite regularly. Link
Active week ahead everybody! Spring is here!
Yep, it's just an oversized DeathStar dipping its refueling siphon into the Sun.
March 1rst
March 15th
Apparently, so has the Caribbean...
The Gulf has become even warmer, though.
I can't believe this guy's voice did not break down from laughing while filming this....LOL
--Traverse City, Michigan, reached 81 degrees yesterday. This was the first 80-degree day winter day there ever. The previous record for earliest 80-degree day there was March 27.
--Grand Rapids, MI, reached 80 yesterday, the earliest-ever 80-degree day there.
It'll be very interesting to see what the rest of the week brings...
I've only had that happen when browsing the blog through the iPhone app's browser. Completely freezes up on the animations.
(edit: I don't mean the direct link to the Dr.'s blog in the app, that link is mobile formatted and doesn't show comments. It happens when I follow a twitter link to a blog post while inside the app's browser. I've previously used this shortcut to read and post comments but it froze too much. Now I use Safari and go to the full site. Blog and comments work fine. No freezing.)
...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF AR/MO EAST TO
THE TN/OH VALLEYS AND ERN GREAT LAKES...
...SYNOPSIS...
RELATIVELY WEAK SWLY MID LEVEL FLOW EXISTS OVER MUCH OF THE U.S.
THIS MORNING WITH STRONGER WINDS ALOFT CONFINED TO THE NORTHWEST/NRN
PLAINS AND NRN NEW ENGLAND. ELSEWHERE...A BROAD BELT OF 10-30KT
500MB FLOW EXTENDS FROM THE SOUTHWEST TO THE OH VALLEY ATOP SLIGHTLY
STRONGER LOW LEVEL SWLY FLOW ON THE WRN FLANK OF ANTICYCLONE
ANCHORED OVER THE SOUTHEAST AND ADJACENT ATLANTIC. MOST PRONOUNCED
HEIGHT FALLS THIS PERIOD WILL OCCUR IN ASSOCIATION WITH A PACIFIC
TROUGH SPREADING INLAND ACROSS WA/ORE. A LOW AMPLITUDE SHORT WAVE
TROUGH EMBEDDED WITHIN THE WEAK FLOW ACROSS THE PLAINS...IN TANDEM
WITH A SOMEWHAT STRONGER IMPULSE OVER CANADA...WILL RESULT IN WEAK
HEIGHT FALLS SPREADING EAST FROM SRN PLAINS TO THE OH VALLEY/GREAT
LAKES THROUGH TONIGHT.
...OZARKS TO OH/TN VALLEYS AND ERN GREAT LAKES...
ANOMALOUSLY HIGH PW/MOISTURE AND MEAGER MID LEVEL FLOW/SHEAR WILL
CONTINUE TO SUPPORT AN ATYPICAL SETUP FOR MID-MARCH TSTM DEVELOPMENT
ACROSS AREAS FROM THE OZARKS ACROSS THE MID/LOWER MS VALLEY TO THE
MIDWEST THROUGH TODAY. ONGOING STORMS FROM SRN IND TO OH/KY/WV AND
ERN TN ARE IN RESPONSE TO MASS CONVERGENCE AND ISENTROPIC LIFT ON
THE ERN EDGE OF EXTENSIVE CNTRL U.S. EML PLUME. RECENT TRENDS AND
UPWIND PROPAGATION VECTORS SUGGEST THE MCS ROOTED ABOVE THE BOUNDARY
LAYER IN OH/WV MAY PRODUCE LOCALLY HEAVY RAIN THIS MORNING. DESPITE
THE LACK OF STRONGER VERTICAL SHEAR OVER THE AREA BASED ON MORNING
SOUNDINGS AND OBJECTIVE ANALYSIS DATA SOME HAIL POTENTIAL WILL
PERSIST DUE TO STEEP LAPSE RATES AND LOW FREEZING LEVELS.
THE AFOREMENTIONED WEAK CIRCULATION/DISTURBANCE SPREADING EAST
ACROSS THE SRN PLAINS THIS MORNING WILL BE ACCOMPANIED BY 10-30KT
MID LEVEL FLOW PER LATEST PROFILER AND VWP OBSERVATIONS. LIFT
ASSOCIATED WITH THIS IMPULSE WILL SPREAD EAST TOWARD THE MIDWEST AND
MS VALLEY ATOP THE BROAD LOW LEVEL WARM/MOIST CONVEYOR BELT. POCKETS
OF GREATER DIURNAL HEATING WILL CONTRIBUTE TO AREAS OF STRONG
DESTABILIZATION OVER THE CNTRL AND SRN U.S. THIS AFTERNOON. MODEL
GUIDANCE SUGGESTS THAT WEAKER INHIBITION EAST OF THE GREAT PLAINS
SHOULD BE OVERCOME/ELIMINATED THROUGH A COMBINATION OF BACKGROUND
ASCENT AND BOUNDARY LAYER DIABATIC HEATING/MIXING. MULTICELLULAR
TSTM DEVELOPMENT IS EXPECTED IN THIS REGIME AND DESPITE LACK OF
STRONGER DEEP-LAYER SHEAR THE THREAT FOR SCATTERED TO NUMEROUS HAIL
AND GUSTY WIND EVENTS SEEMS POSSIBLE INTO THIS EVENING. IF GREATER
STORM-SCALE ORGANIZATION CAN DEVELOP/EVOLVE THROUGH THE DAY IT MAY
BE POSSIBLE TO PROVIDE A MORE DETAILED/FOCUSED TSTM WIND THREAT AREA
BUT HAIL APPEARS TO BE THE PREDOMINANT SEVERE THREAT AT THIS TIME.
WEAK FRONT WILL AID LIFT AMIDST INCREASINGLY UNSTABLE AIRMASS ACROSS
LOWER MI AND OH LATER TODAY TO SUPPORT A FEW CLUSTERS/LINES OF
STORMS ALSO CAPABLE OF PRODUCING HAIL AND GUSTY WINDS.
..CARBIN/SMITH/GUYER.. 03/15/2012
Days 4 and 5 are looking a bit interesting...SPC rarely notes things this far out unless they are pretty confident.
"I thought neutrinos were some sorta Louisiana rodent"..
....PATRAP......I heard dat..
..they nasty, but hey with nuff Dark Roux and nuff garlic, viola!
Was almost in a High risk.
The night before was when a tornado hit Atlanta.
Viewing: 351 - 387
Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 — Blog Index