Dr. Jeff Masters' WunderBlog

Violent tornado rakes Tennessee
Posted by: Dr. Jeff Masters, 1:44 PM GMT on April 03, 2006 +0
Tornadoes and severe thunderstorms ripped through Missouri, Arkansas, Illinois, Ohio, Tennessee, and surrounding states Sunday, killing at least 23 people. Hardest hit was northwest Tennessee, where tornadoes claimed at least 12 lives in Dyer County. Damage reports indicated that many houses in the tornado's path were completely destroyed leaving only the foundation, making it likely that the Dyer County tornado will be ranked as a violent F4 tornado (207-260 mph winds) on the Fujita scale. This would be the second F4 tornado of the year--an F4 tornado struck Monroe City, MO on March 13, as part of an 84-tornado assault on the Midwest that also featured 11 strong F3 tornadoes. There is a slight possibility that last night's Dyer County tornado was an F5--the most violent type of tornado, capable of incredible damage--but we won't know until the National Weather Service has a chance to get out today in daylight and perform a damage survey. The U.S. has not had an F5 tornado since the infamous Moore, Oklahoma tornado of 1999, which had the highest winds ever recorded in a tornado, 301 mph. The U.S. has already equalled last year total of F4 tornadoes (one), and this Spring's severe weather season is shaping up to be far more deadly and destructive than last year's unusually quiet one.


Figure 1. Damage reports for the 24 hours ending at 9am EST April 3 show the wide scope of yesterday's severe weather.

The threat for severe weather continues today. The "Moderate Risk" area in the latest outlook by the Storm Predisction Center covers a region unused to seeing tornadoes--coastal areas of North Carolina, Virginia, and Maryland. A strong cold front will push across the region this afternoon, creating a squall line with embedded supercells likely to produce tornadoes, damaging straight-line thunderstorm winds, and hail golf ball size and larger. The severe weather episode will end tonight as the cold front pushes off the coast and more tranquil weather returns to the U.S.

Tomorrow: An update on the severe weather outbreak, plus a look at Dr. Bill Gray's new forecast for the hurricane season of 2006.

Jeff Masters
Severe WX in Tennessee (HENSCOLASC)
Here are some of the unusual cloud formations while riding in the mountains of E. Tennessee
Severe WX in Tennessee
Severe Weather (Nalapoo22)
I just shot this 3 minutes ago from my Front Porch!
Severe Weather
Categories: Tornado
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101. HurricaneMyles 11:07 PM GMT on April 03, 2006    
That lone supercell in N. Carolina looks really nasty, too. Appears to have the highest cloud tops of em all.
Member Since: January 12, 2006 Posts: 5 Comments: 827
102. aquak9 11:08 PM GMT on April 03, 2006    
good job,levi....wish we could get closer up (visual or radar) to baltimore...
Member Since: August 13, 2005 Posts: 163 Comments: 24996
103. Levi32 11:18 PM GMT on April 03, 2006    
Yeah I wish so too aquak.
Member Since: November 24, 2005 Posts: 586 Comments: 25441
104. Levi32 11:19 PM GMT on April 03, 2006    
Storms moving into D.C. Baltimore is next...

Member Since: November 24, 2005 Posts: 586 Comments: 25441
105. michalp 12:39 AM GMT on April 04, 2006    
those sst anomolies mentioned earlier, right of the coast of florida in the gulf they are way in the blue. I want to go for a swim, and sometimes warmer is better.
106. ForecasterColby 1:14 AM GMT on April 04, 2006    
Yeah, but the cold areas this year match last year's - the Sargasso Sea, coast of Florida, and extreme east atl.
107. Skyepony (Mod) 1:44 AM GMT on April 04, 2006    
Yeah the SST anomily from last year matches this year pretty well, save the Gulf is hotter. If the gif isn't animated hit refresh, it stops once it goes through a few times. The start is March 20, 2005. Ending on March 19, 2006. Can get a decient comparasion as it starts over again. It really shows the birth of La Nina.

Credit~ NOAA-CIRES

At least someone corrected my error from last night~ Thanks Jeff... That's the second time I said East when I ment West while blogging latenight.
Member Since: August 10, 2005 Posts: 144 Comments: 29240
108. DAVIDKRZW 1:49 AM GMT on April 04, 2006    
hey : JeffMasters where are you at? and how bad was your sever weather was?
109. Skyepony (Mod) 1:54 AM GMT on April 04, 2006    
Weekly ENSO update

Credit~NOAA/CPC/NCEP
interesting~ the hot grows cooler, while the cold grows warmer...
Member Since: August 10, 2005 Posts: 144 Comments: 29240
110. HurricaneMyles 1:57 AM GMT on April 04, 2006    
I noticed that the cold waters off the east coast are quite similar but that the caribbean and gulf temps are kinda reversed. Last year at this time the gulf was normal and the caribbean was warm, now we have a warm gulf and a normal caribbean. I wonder if climatology has predictions for things like that?
Member Since: January 12, 2006 Posts: 5 Comments: 827
111. Skyepony (Mod) 2:16 AM GMT on April 04, 2006    
Doesn't look like todays damage will be near anything like yesterdays Link. No tornado reports, 102 hail reports~ nothing over golf ball size & 52 wind reports. As far as wind damage~ 2 homes lost a roof, the rest is tree damage. No injurys reported:)
Member Since: August 10, 2005 Posts: 144 Comments: 29240
112. Skyepony (Mod) 2:37 AM GMT on April 04, 2006    
Hawaii Residents See Sun After More Than 40 Days Of Rain
hightlights~

Nearly 92 inches of rain were recorded during March at Mount Waialeale, which is considered the rainiest spot on the planet. The previous record was about 90 inches in April 1971, according to the National Weather Service. & none too soon.

Kahala Mall closed and was evacuated shortly before 1 p.m. Friday because of ankle-deep water in the shopping center. Water also cascaded down stairways into the mall's warehouse, one floor down from the ground level. Store clerks barely had time to move their merchandise to higher ground.

Roundtop Drive, which already had been the scene of several mudslides, saw several major slides Friday. Cars were buried under one slide, which also undermined the roadway, KITV reported.
Member Since: August 10, 2005 Posts: 144 Comments: 29240
114. lightning10 3:33 AM GMT on April 04, 2006    
wow thoes pictures of the dammage are just so sad. I have a fealing that thoes will be upgraded to F-5 tornadows after the NWS takes there survay of the dammage.
Member Since: November 24, 2005 Posts: 41 Comments: 629
115. Oldmanwinter 3:53 AM GMT on April 04, 2006    
Does anyone remember the Super outbreak of tornadoes that occured EXACTLY 32 years ago? I thought about this when those tornadoes hit this time.
Member Since: March 14, 2006 Posts: 0 Comments: 9
118. Skyepony (Mod) 5:02 AM GMT on April 04, 2006    
Not the 1st time accuweather & NOAA had a difference of opinion. My source was off too, though atleast only 1.71 shy.
RAIN SINCE MARCH RECORD RECORD FOR
FEB 19 RAIN MARCH ANY MONTH/YR
KAUAI...
MOUNT WAIALEALE 130.40 93.71** 81.95(1951) 90.07 APR71
Member Since: August 10, 2005 Posts: 144 Comments: 29240
119. Skyepony (Mod) 5:09 AM GMT on April 04, 2006    
That didn't copy & paste so well...here's the link
MOUNT WAIALEALE

RAIN SINCE FEB 19 130.40
MARCH RAIN 93.71
RECORD MARCH 81.95(1951)
RECORD FOR ANY MONTH/YR 90.07 APR71
Member Since: August 10, 2005 Posts: 144 Comments: 29240
121. BrianClark 1:23 PM GMT on April 04, 2006    
Dr. Gray's team has posted the April 4th update :) It doesn't seem as if there has been much change, if any, to the inital December forecast. Still looks like an active one.

April 4th Update

Have a great day guys!
122. Skyepony (Mod) 6:31 PM GMT on April 04, 2006    
copied from your link~ Mount Waialeale has racked up 116.25" in the past 30 days.

The tourism hasn't stopped in Hawaii. That's Disney (Parent owner of accuweather chasing customers to Fl). Notice too, accuweather predicted it wouldn't let up this week & finally has.
Member Since: August 10, 2005 Posts: 144 Comments: 29240

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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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