Dr. Jeff Masters' WunderBlog

Tornado, hail, and torrential rains hammer Hawaii
Posted by: Dr. Jeff Masters, 5:50 PM GMT on March 10, 2012 +38
A waterspout made landfall on the Hawaiian island of Oahu Friday morning on the east shore town, becoming a rare Hawaiian tornado as it moved through the towns of Lanikai and Kailua. The twister, rated an EF-0 with winds of 60 - 70 mph, tore holes in roofs and downed trees along a 1 1/2 mile long, 20-yard wide path of damage. No injuries were reported. The same storm also brought golf ball sized hail raining down for about 45 minutes on Oahu. The islands have seen intense rains over the past week, thanks to a 1040 mb blocking high pressure system near 40°N, to the NNW of the island that forced a companion cutoff low near 25°N 165°W to stay put, bringing a series of heavy storms to the islands. Rainfall amounts over the past week have exceeded three feet in some locations. The resulting flooding forced the governor on Wednesday to declare two islands, Oahu and Kauai, disaster areas. The latest forecasts for Kauai and Oahu call for sporadic rains to continue over the weekend, followed by a drying trend during the coming week.


Video 1. On March 5, 2012, flooding rains of 3" per hour caused this creek to overflow the Loop Road on Kauai and wash away a pickup truck that tried to cross. The occupants evacuated safely.

Here are some select rainfall amounts over the past week, from the National Weather Service:

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
1155 AM HST FRI MAR 9 2012

...TORRENTIAL RAINS SLAM HAWAII IN THE PAST WEEK...

A SLOW MOVING FRONT BROUGHT HEAVY RAIN TO MOST ISLANDS THE PAST WEEK...AS IT INTERACTED WITH SEVERAL DISTURBANCES ALOFT. THE FOLLOWING REPRESENTS 7-DAY RAINFALL TOTALS...FROM 11 AM FRIDAY MARCH
2 THROUGH 11 AM FRIDAY MARCH 9.

KAUAI
HANALEI 45.97
WAINIHA POWER HOUSE 43.84
KAPAHI 32.66
MOUNT WAIALEALE RAINGAGE 31.32
LIHUE AIRPORT 13.59

OAHU
OAHU FOREST NWR 39.65
MOANALUA - USGS - USGS 36.42
PUNALUU STREAM - USGS 31.46
WILSON TUNNEL 25.05
LULUKU 22.25
PACIFIC TSUNAMI WARNING CENTER 20.47
HONOLULU AIRPORT 4.54

MOLOKAI
MOLOKAI AIRPORT 2.74

MAUI
PUU KUKUI - USGS 16.70
KAHULUI AIRPORT 2.34

HAWAII
HILO AIRPORT 5.97


Video 2. Damage from the March 9, 2012 tornado on Oahu.

Hawaii's tornado history
Tornadoes are rare in Hawaii. According to the Tornado History Project, only 39 tornadoes have hit the state since 1950, an average of one tornado every 1.5 years. The strongest tornadoes to hit the state occurred in 1982, when a series of three F-2 twisters struck Oahu in February and March. Those months are the most frequent months for tornadoes, with 44% of the total. No one has ever been killed in a Hawaiian tornado, but six people have been injured.

Jeff Masters
Hawaii Hail (IslandStyle15)
Rare Hawaii hailstorm to be remembered
Hawaii Hail
Not A good day in Paradise (xJrhouckx)
Hawaii has had ping pong ball size hail and major flooding this week.
Not A good day in Paradise
Uwe ka lani, ola ka honua (Uwekalani)
When the heavens weep, the earth lives. Notice the color of the center falls. Taken from below the Pali Lookout. Many drivers pulled into the overlook to admire these amazing waterfalls.
Uwe ka lani, ola ka honua
Categories: Tornado Flood
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Reader Comments
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351. Skyepony (Mod) 5:49 AM GMT on March 12, 2012    
Barefoot~ NHC renamed TD10 because it tangled with a shortwave or something as it regenerated. This is another argument to calling it homegrown.

It's a term you would use to describe a storm that formed in the Western North Atlantic, kinda closer to land. Usually either a cut off low or a Tropical wave interacting with a cutoff low, shortwave or other bit of energy. Usually something not 100% African wave.

Charley for example..TD just east of the islands. All Tropical wave straight from Africa. I wouldn't call it homegrown either. They are mostly born in SW or W Caribbean, GOM, Bahamas or along the east coast.
Member Since: August 10, 2005 Posts: 144 Comments: 29283
352. Neapolitan 9:26 AM GMT on March 12, 2012    
These maps from HAMweather show high and low temperature anomalies forecast for the next five days across the continental U.S. Note that by next weekend, there are anomalies nearing 40 degrees above normal in Wisconsin, which equates to highs around 70 and lows near 55. In mid-March:

DAY 1
WarmWarm

DAY 2
WarmWarm

DAY 3
WarmWarm

DAY 4
WarmWarm

DAY 5
WarmWarm
Member Since: November 8, 2009 Posts: 4 Comments: 11148
353. MahFL 10:30 AM GMT on March 12, 2012    
Quoting Skyepony:
I-75 in Sumter County FL reopens after 11 wrecks with 27 cars due to heavy rain.

People are being urged to slow down & drive cautiously in the rain.


Like thats ever going to happen !
Member Since: June 9, 2004 Posts: 0 Comments: 2421
354. trunkmonkey 10:30 AM GMT on March 12, 2012    
Quoting Skyepony:


I disagree. With a drought in West Africa we should see dust choked Tropical Waves that will take longer to develop. We should see more waves make it across the Atlantic before they shake the dust out & form. This was key in like 2005. Should add to the homegrown advantage.



2005 HOLY CRAP! I know what that means!
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356. WxGeekVA 11:47 AM GMT on March 12, 2012    
On the right you will see AOI WU-002.
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357. WxGeekVA 11:53 AM GMT on March 12, 2012    
Looks like some strong storms possible tomorrow afternoon according to the NWS:

.SHORT TERM /TUESDAY THROUGH WEDNESDAY/...
REMNANTS OF MON NGT PCPN SHUD MOVE S/E OF CWA TUE MRNG...BUT WITH
CONVERGENCE ASSOCIATED SECONDARY SFC TROF/CDFNT MOVG THRU DURG THE
DAY...ADDITIONAL SHRA MAY DVLP. DECENT SHRTWV TROF PASSES N OF CWA
TUE...BRINGING COOLER AIR ALOFT SWD OVR MID-ATLC. THUS...ESPECIALLY
DURING PEAK DIURNAL HEATING /SFC TEMPS IN 70S/...LAPSE RATES WILL BE
STEEP. ISOLATED STRONG TSTM CANT BE RULED OUT
...AS CAPE MAY NEAR
1000 J/KG. BEST CHC IS BLUE RIDGE E...WHERE FRONT WILL BE MOVG THRU MID-AFTN
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358. TaylorSelseth 11:55 AM GMT on March 12, 2012    
Rather bizarre weather. the LOW this morning in Fargo is 45F, the normal HIGH is 33F.
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359. biff4ugo 12:02 PM GMT on March 12, 2012    
I don't know why the solar image Patrap posted did not capture the CME, but it is big, bright, and fast. Glad it is not headed this way.
Member Since: December 28, 2006 Posts: 107 Comments: 1176
361. TropicalAnalystwx13 12:24 PM GMT on March 12, 2012    
Quoting emguy:


Actually, Hurricane Charley was not a home grown system. His origins were of a true Cape Verde nature. He was a tropical wave that came off Africa and passed through the Carribean with little circumstance. Thunderstorms became much better organized while approaching the Leewards, but advisories did not begin until the wave passed through the islands. At the time of passage through the islands, it was noted by NHC that there was a sharp 4MB pressure drop and on further analysis, advisories were initialized.

Other notes about Charley would include his ability to find a favorable environment despite a very rapid forward motion through both the Carribean and the Gulf. Second, Charley was a storm that remained small in size, but more interestingly, remained small and intense while nested in a completely dry air environment. In fact, when Charley first developed, he was totally surrounded by a deep layer of African Dust. It is thought this may have contibuted to the small size of the Hurricane.

For such a fast forward speed, and a surrounding dry air environment, this hurricane found a small nest and took it along for the ride. Also of note...the eye of Charley contracted further while moving through Charlotte Harbor. It is possible that the eye iteslf was less than 2 miles wide (maybe 1.5 miles wide) at final landfall in Punta Gorda.

90% of tropical cyclones develop from tropical waves that move off the coast of Africa. That does not make them a Cape Verde system.

The official definition of a Cape Verde tropical cyclone is one that develops near the Cape Verde Islands, or within 800 miles (if I remember correctly). Taking a look at Charley's path, it developed outside of that.



I guess you could not consider it a Cape-Verde type nor a homegrown type.
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362. JRRP 12:26 PM GMT on March 12, 2012    
this season will be interesting

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363. JRRP 12:27 PM GMT on March 12, 2012    
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365. StormTracker2K 12:45 PM GMT on March 12, 2012    
Picked up 1.06" since last Friday here near Orlando with Melbourne picking 2.24" yesterday. We had an unexpected rainy weekend here in E C FL.
Member Since: October 26, 2011 Posts: 0 Comments: 2651
366. WDEmobmet 12:49 PM GMT on March 12, 2012    
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1259 AM CDT MON MAR 12 2012

VALID 121200Z - 131200Z


...MID SOUTH/CENTRAL GULF COAST REGION...
DESPITE WEAK/UNFOCUSED ASCENT...DAYTIME HEATING OF A MOIST BOUNDARY
LAYER WILL CONTRIBUTE TO THE DEVELOPMENT OF 1000 TO 1500 J/KG
MIXED-LAYER CAPE...SUPPORTING SUBSEQUENT INITIATION OF SCATTERED TO
ISOLATED AFTERNOON SHOWERS AND THUNDERSTORMS. GIVEN THE DEGREE OF
CAPE AND DEEP-LAYER SHEAR 30 TO 40 KT EXPECTED...A FEW
STRONGER/ORGANIZED STORMS COULD EVOLVE...CAPABLE OF PRODUCING GUSTY
WINDS AND HAIL.

LACK OF A LOW-LEVEL FOCUS AND THUS THE EXPECTATION OF LIMITED STORM
COVERAGE PRECLUDES UPGRADE TO SLIGHT RISK ATTM. SHOULD POTENTIAL
FOR MORE WIDESPREAD STORMS BECOME EVIDENT...UPGRADE MAY BE NEEDED IN
SUBSEQUENT OUTLOOKS.
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367. washingtonian115 12:51 PM GMT on March 12, 2012    
It will be in it's 70's to near 80' all week.Yes!.
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368. StormTracker2K 12:51 PM GMT on March 12, 2012    
Post# 362 looks scary!
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369. GeorgiaStormz 12:53 PM GMT on March 12, 2012    

From the forecast for my area in N GA:


Wednesday: Mostly sunny, with a high near 80. Calm wind becoming west around 5 mph.

Wednesday Night: Partly cloudy, with a low around 52.

Thursday: Mostly sunny, with a high near 82.

Thursday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52.

Friday: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.


Here come the bugs and the pollen. My house is already beseiged by hundreds of bees around our bushes. Those disappering honeybees seem to be back. Im a goner
Member Since: February 11, 2012 Posts: 0 Comments: 7154
370. StormTracker2K 12:54 PM GMT on March 12, 2012    
Quoting washingtonian115:
It will be in it's 70's to near 80' all week.Yes!.


Unreal! We could be in full summer mode come May.
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371. nigel20 1:01 PM GMT on March 12, 2012    
Quoting JRRP:

Good morning guys....looking as if we will have neutral condition through out the hurricane season
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372. washingtonian115 1:04 PM GMT on March 12, 2012    
Quoting StormTracker2K:


Unreal! We could be in full summer mode come May.
Yep.Looking forward to it.The pool will more than likley open up early.The kids are going to enjoy this!.
Member Since: August 14, 2010 Posts: 5 Comments: 10627
373. washingtonian115 1:06 PM GMT on March 12, 2012    
Quoting nigel20:

Good morning guys....looking as if we will have neutral condition through out the hurricane season
Neu-neutral?.That only spells trouble...hopefully hurricane season is good to us.
Member Since: August 14, 2010 Posts: 5 Comments: 10627
374. nigel20 1:07 PM GMT on March 12, 2012    
Why do you guys think the azores high was/is that big and strong through out this winter? It is also the cause of the drought in southern UK, spain and other parts of europe
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375. GeorgiaStormz 1:08 PM GMT on March 12, 2012    
Quoting washingtonian115:
Yep.Looking forward to it.The pool will more than likley open up early.The kids are going to enjoy this!.


maybe, but your ridge of warmth may come crashing down into a week:
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376. nigel20 1:11 PM GMT on March 12, 2012    
Quoting washingtonian115:
Neu-neutral?.That only spells trouble...hopefully hurricane season is good to us.

I'm hoping for a good season as well
Member Since: November 6, 2010 Posts: 2 Comments: 4516
377. washingtonian115 1:13 PM GMT on March 12, 2012    
Quoting GeorgiaStormz:


maybe, but your ridge of warmth may come crashing down into a week:
Some shots of cold air are possible still.May could very well end up cold.Such as years like 05,06,08,10,and 11.But the last few days of May and the rest off the summer(besides 09) were very hot.
Member Since: August 14, 2010 Posts: 5 Comments: 10627
378. TropicalAnalystwx13 1:19 PM GMT on March 12, 2012    
Quoting GeorgiaStormz:


maybe, but your ridge of warmth may come crashing down into a week:

That's in 372 hours and the model has shown no consistency. Ignore that.
Member Since: July 6, 2010 Posts: 89 Comments: 25275
379. CybrTeddy 1:22 PM GMT on March 12, 2012    
Quoting JRRP:
this season will be interesting



Indeed. It's starting to appear less likely that this year will be a significant El Nino year, rather a warm neutral one.
Member Since: July 8, 2005 Posts: 253 Comments: 20230
380. TropicalAnalystwx13 1:24 PM GMT on March 12, 2012    
Quoting CybrTeddy:


Indeed. It's starting to appear less likely that this year will be a significant El Nino year, rather a warm neutral one.

I don't like anybody should have thought it would end up a significant El Nino year to begin with. These changes are not rapid, just gradual.
Member Since: July 6, 2010 Posts: 89 Comments: 25275
381. TropicalAnalystwx13 1:25 PM GMT on March 12, 2012    
Quoting WDEmobmet:
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1259 AM CDT MON MAR 12 2012

VALID 121200Z - 131200Z


...MID SOUTH/CENTRAL GULF COAST REGION...
DESPITE WEAK/UNFOCUSED ASCENT...DAYTIME HEATING OF A MOIST BOUNDARY
LAYER WILL CONTRIBUTE TO THE DEVELOPMENT OF 1000 TO 1500 J/KG
MIXED-LAYER CAPE...SUPPORTING SUBSEQUENT INITIATION OF SCATTERED TO
ISOLATED AFTERNOON SHOWERS AND THUNDERSTORMS. GIVEN THE DEGREE OF
CAPE AND DEEP-LAYER SHEAR 30 TO 40 KT EXPECTED...A FEW
STRONGER/ORGANIZED STORMS COULD EVOLVE...CAPABLE OF PRODUCING GUSTY
WINDS AND HAIL.

LACK OF A LOW-LEVEL FOCUS AND THUS THE EXPECTATION OF LIMITED STORM
COVERAGE PRECLUDES UPGRADE TO SLIGHT RISK ATTM. SHOULD POTENTIAL
FOR MORE WIDESPREAD STORMS BECOME EVIDENT...UPGRADE MAY BE NEEDED IN
SUBSEQUENT OUTLOOKS.


Member Since: July 6, 2010 Posts: 89 Comments: 25275
382. washingtonian115 1:31 PM GMT on March 12, 2012    
I never predicted a strong El nino.Maybe a weak one? yes.But a strong one?.No.As others have already said we have a cold PDO that's just not going to really allow it.
Member Since: August 14, 2010 Posts: 5 Comments: 10627
383. Neapolitan 1:33 PM GMT on March 12, 2012    
From HAMWeather, look at some of these forecast anomalies for this Friday. These aren't actual temperatures, but departures from normal. Note the large area of >20 and even >30 departures--some of them close to 40 degrees above normal.

Warm
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384. nigel20 1:34 PM GMT on March 12, 2012    
Quoting washingtonian115:
I never predicted a strong El nino.Maybe a weak one? yes.But a strong one?.No.As others have already said we have a cold PDO that's just not going to really allow it.

Agreed
Member Since: November 6, 2010 Posts: 2 Comments: 4516
385. RitaEvac 1:36 PM GMT on March 12, 2012    
Quoting Neapolitan:
From HAMWeather, look at some of these forecast anomalies for this Friday. These aren't actual temperatures, but departures from normal. Note the large area of >20 and even >30 departures--some of them close to 40 degrees above normal.

Warm


Thank GOD there's no such things as normal.
Member Since: July 14, 2008 Posts: 1 Comments: 8894
386. nigel20 1:38 PM GMT on March 12, 2012    
Quoting Neapolitan:
From HAMWeather, look at some of these forecast anomalies for this Friday. These aren't actual temperatures, but departures from normal. Note the large area of >20 and even >30 departures--some of them close to 40 degrees above normal.

Warm

These temp anomalies are unbelievable for this time of the year
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387. SPLbeater 1:40 PM GMT on March 12, 2012    
morning all. wont be here long, got to go get started on the work outside dad assigned to me. But i shall be lurking....lol
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388. washingtonian115 1:41 PM GMT on March 12, 2012    
Quoting nigel20:

Agreed
This is exacally why the Colorado team didn't predict what the season was going to be like back in December.People were uncertain what was going to happen over in the pacific.Now the models are flipping back and forth.
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389. Neapolitan 1:42 PM GMT on March 12, 2012    
Quoting RitaEvac:


Thank GOD there's no such things as normal.
"Normal" in this context--the meteorological one--means the specific average over the standard 30-year base period, which is currently 1981-2010. IOW, this Friday's temperatures in Wisconsin are forecast to be 39 degrees above the 1981-2010 mean average for that area.

Yikes...
Member Since: November 8, 2009 Posts: 4 Comments: 11148
390. nigel20 1:51 PM GMT on March 12, 2012    
Quoting washingtonian115:
This is exacally why the Colorado team didn't predict what the season was going to be like back in December.People were uncertain what was going to happen over in the pacific.Now the models are flipping back and forth.

Yeah, it's a waiting game
Member Since: November 6, 2010 Posts: 2 Comments: 4516
391. washingtonian115 2:08 PM GMT on March 12, 2012    
Quoting nigel20:

Yeah, it's a waiting game
I think we'll all know what the pattern is going to be like in late May early June.
Member Since: August 14, 2010 Posts: 5 Comments: 10627
392. CybrTeddy 2:12 PM GMT on March 12, 2012    
Quoting TropicalAnalystwx13:

I don't like anybody should have thought it would end up a significant El Nino year to begin with. These changes are rapid, just gradual.


I think it's about time for me to crank out my March hurricane season predictions.
Member Since: July 8, 2005 Posts: 253 Comments: 20230
393. nigel20 2:12 PM GMT on March 12, 2012    
Quoting washingtonian115:
I think we'll all know what the pattern is going to be like in late May early June.

Agreed
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394. WxGeekVA 2:18 PM GMT on March 12, 2012    
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395. SPLbeater 2:18 PM GMT on March 12, 2012    
ok well....i was going, to do some work on the front yard, but my dad has the key to tha building, and i dont. and the building is locked:/
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396. nigel20 2:20 PM GMT on March 12, 2012    
Later guys
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397. Minnemike 2:21 PM GMT on March 12, 2012    
Quoting Neapolitan:
From HAMWeather, look at some of these forecast anomalies for this Friday. These aren't actual temperatures, but departures from normal. Note the large area of >20 and even >30 departures--some of them close to 40 degrees above normal.

Warm
those anomalies would pass as actual temps in a normal daily high for this date... in fact, the Mpls 34F anomaly seems higher than an expected average temp for this date! (or close to)
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398. SPLbeater 2:28 PM GMT on March 12, 2012    
koji is gone...Peak intensity of 70kts
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399. CybrTeddy 2:38 PM GMT on March 12, 2012    
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401. hurricanehunter27 2:43 PM GMT on March 12, 2012    
Quoting GeorgiaStormz:

From the forecast for my area in N GA:


Wednesday: Mostly sunny, with a high near 80. Calm wind becoming west around 5 mph.

Wednesday Night: Partly cloudy, with a low around 52.

Thursday: Mostly sunny, with a high near 82.

Thursday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52.

Friday: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.


Here come the bugs and the pollen. My house is already beseiged by hundreds of bees around our bushes. Those disappering honeybees seem to be back. Im a goner
Yah noticing that also! cant believe we already have 80's in the forecast. Who knows we could get in the 90's if all of this craziness continues.
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About JeffMasters
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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