Dr. Jeff Masters' WunderBlog

Tornado hits France; unprecedented April heat in Europe
Posted by: Dr. Jeff Masters, 12:44 PM GMT on May 01, 2012 +39
A rare EF-1 tornado with 73 - 112 mph winds (117 - 180 kph) hit Toulouse, France on Sunday, causing minor damage that included collapsed walls, uprooted trees, and cars moved out of place. The tornado touched down 15 - 20 km south of Toulouse in Southwest France at 7:10 pm local time, and baseball-sized hail (4 cm) also hit the region. According to the European Severe Weather Database (ESWD), this was the first tornado in France in 2012. French tornadoes are rare; there were just three tornadoes in the country in 2011. The European Severe Weather Database (ESWD) (as summarized by Wikipedia) lists 15 tornadoes for all of Europe so far in 2012. Most of the twisters (nine) were in Turkey. For comparison, an average of 495 tornadoes touched down in the U.S. during the period January - April over the years 2009 - 2011. A key reason for the lack of tornadoes in Europe is that the atmosphere is usually not unstable enough. Tornadoes require warm, moist, low-density air near the surface, and cold, dry, high-density air aloft to provide a lot of instability. The Baltic Sea and North Sea to the north of Europe moderate cold air flowing south from the pole, reducing the amount of instability over Europe.


Video 1. A rare French tornado kicks up dust near Toulouse, France on April 29, 2012.

Unprecedented April heat hits Central and Eastern Europe
A European heat wave of unparalleled intensity for so early in the year smashed all-time April heat records over much of Central and Eastern Europe on Saturday and Sunday. According to wunderground's weather historian Christopher C. Burt, and weather records researcher Maximiliano Herrera, new national April heat records were set in Belarus, Germany, Austria, Lithuania, Moldova, and Poland, and hundreds of stations in Germany, Austria, France, Italy, Hungary, Moldova, Romania, Poland, Belarus, Ukraine, Lithuania, Latvia, Czech Republic, Slovakia, and Russia recorded their hottest April temperatures on record. Moscow hit 28.6°C (84°F) on Sunday, the hottest April reading in the city since record keeping began 130 years ago. The culprit for the heat wave and French tornado is a large low pressure system off the coast of France whose counter-clockwise flow has been pumping hot air from the Sahara Desert northwards into Europe. The low is expected to continue to bring unusually hot weather to most of Central and Eastern Europe for the remainder of the week.

New all-time April national heat records set over the past few days:

Poland: 31.7°C (89.18°F) at Tomaszow on 4/29
Germany: 32.2°C (90.0°F) at Munich on 4/28
Austria: 31.8°C (89.2°F) at Ranshoten on 4/28
Belarus: 30.4°C ( 86.7°F) at Zitovici on 4/29
Moldova 32.5°C
Lithuania

Jeff Masters
Categories: Tornado Heat
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201. GeoffreyWPB 11:58 PM GMT on May 01, 2012    
Quoting HurricaneTracker01:
WISH-TV reports tornado touchdown near Jamestown in the Indiana cell


Link
Member Since: September 10, 2007 Posts: 0 Comments: 9127
202. Ameister12 12:02 AM GMT on May 02, 2012    
Getting hit by a second round of storms. Flooding might be an issue with the lake near my house starting to over flow. A third round is getting started the my west near Indianapolis.
Member Since: August 9, 2009 Posts: 9 Comments: 3518
203. Articuno 12:05 AM GMT on May 02, 2012    
Quoting Ameister12:
Getting hit by a second round of storms. Flooding might be an issue with the lake near my house starting to over flow. A third round is starting to get started near Indianapolis.

Where ya live?
Anyways hope the thick of the storms (round 3) aren't at least tornadic when they come by your area.
Member Since: October 22, 2011 Posts: 0 Comments: 1926
204. evilpenguinshan 12:11 AM GMT on May 02, 2012    
thats a nasty couplet just south of the TVS on radar - from spotter cams it doesnt look to be on the ground, but the rain is thick and it's hard to tell...look out princeton!

Member Since: March 20, 2012 Posts: 0 Comments: 357
205. Articuno 12:16 AM GMT on May 02, 2012    
Wow check out this photo!

Took in Bartlesville, OK
Credit to Mbryan777 for the photo but just WOW.
Member Since: October 22, 2011 Posts: 0 Comments: 1926
206. Ameister12 12:18 AM GMT on May 02, 2012    
Quoting Articuno:

Where ya live?
Anyways hope the storms aren't at least as tornadic when they come by your area.

Here's a map I made with my location. A few miles NE of Cincinnati.
Member Since: August 9, 2009 Posts: 9 Comments: 3518
208. islander101010 12:25 AM GMT on May 02, 2012    
still some spin in the northern gulf
Member Since: September 11, 2010 Posts: 0 Comments: 2968
209. Ameister12 12:25 AM GMT on May 02, 2012    
Quoting EugeneTillman:

Nice depiction. Good work.

Thanks. =)
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210. ILwthrfan 12:55 AM GMT on May 02, 2012    
Should start to see this MCV start to accelerate into a bow segment.  Will be interesting to see if it rides the front all the way down to the east southeast.

Member Since: February 2, 2010 Posts: 0 Comments: 1033
211. txjac 12:56 AM GMT on May 02, 2012    
Quoting Articuno:
Wow check out this photo!

Took in Bartlesville, OK
Credit to Mbryan777 for the photo but just WOW.


Wow, that's beautiful
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212. MAweatherboy1 1:11 AM GMT on May 02, 2012    
Storm south of Point Pleasant, WV badly needs a tornado warning
Member Since: February 11, 2012 Posts: 67 Comments: 6373
213. weatherh98 1:13 AM GMT on May 02, 2012    
Quoting ILwthrfan:
Should start to see this MCV start to accelerate into a bow segment.  Will be interesting to see if it rides the front all the way down to the east southeast.



Mcv?
Member Since: June 17, 2011 Posts: 11 Comments: 6091
214. LargoFl 1:15 AM GMT on May 02, 2012    
Member Since: August 6, 2011 Posts: 0 Comments: 22426
215. TropicalAnalystwx13 1:15 AM GMT on May 02, 2012    
Quoting weatherh98:


Mcv?

Mesoscale Convective Vortex: A low pressure area within a MCS (Mesoscale Convective System). Usually associated with damaging wind/hail outbreaks. Additionally, if these systems move over tropical waters, they can sometimes form into a tropical cyclone.

Not sure if this could be considered one or not..
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216. charlottefl 1:16 AM GMT on May 02, 2012    
Quoting MAweatherboy1:
Storm south of Point Pleasant, WV badly needs a tornado warning


Oh Definitely, good call.



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217. charlottefl 1:18 AM GMT on May 02, 2012    
TVS just popped up on that cell in WV..
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218. weatherh98 1:25 AM GMT on May 02, 2012    
Quoting TropicalAnalystwx13:

Mesoscale Convective Vortex: A low pressure area within a MCS (Mesoscale Convective System). Usually associated with damaging wind/hail outbreaks. Additionally, if these systems move over tropical waters, they can sometimes form into a tropical cyclone.

Not sure if this could be considered one or not..


Thanks
Member Since: June 17, 2011 Posts: 11 Comments: 6091
219. Skyepony (Mod) 1:53 AM GMT on May 02, 2012    
That trough that was over SFL to Cuba last weekend has twisted up a bit in the gulf. Though still depicted as a trough on the surface map it looks to be firing from the surface, like a Low. Pretty sloppy. Click pic to animate. Rainbow really shows how the MVC over TX touched the convection off.

Member Since: August 10, 2005 Posts: 144 Comments: 29358
220. Patrap 1:58 AM GMT on May 02, 2012    
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221. washingtonian115 2:03 AM GMT on May 02, 2012    
That server stuff is coming for meh.I hope it breaks up over the mountains before it gets to us here in D.C.Maybe WV will be the sacrifice....
Member Since: August 14, 2010 Posts: 5 Comments: 10665
222. Skyepony (Mod) 2:06 AM GMT on May 02, 2012    
Fresh ASCAT of the Low that caused the heatwave in central & eastern Europe. Looks like it moved away & weakened a good bit from earlier today.
Member Since: August 10, 2005 Posts: 144 Comments: 29358
224. presslord 2:14 AM GMT on May 02, 2012    
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225. washingtonian115 2:18 AM GMT on May 02, 2012    
Quoting presslord:
Sue Palka Gary McGrady...
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226. Skyepony (Mod) 2:19 AM GMT on May 02, 2012    
Closest buoy out there to the spin in the gulf. Other close ones..

Member Since: August 10, 2005 Posts: 144 Comments: 29358
227. WxGeekVA 2:24 AM GMT on May 02, 2012    
Quoting washingtonian115:
Sue Palka Gary McGrady...


Doug Hill was way better...sad to see he's being phased out over at ABC7...
Member Since: September 3, 2011 Posts: 13 Comments: 3323
228. wxmod 2:25 AM GMT on May 02, 2012    
MODIS Satellite photo today shows Pacific coast from Santa Cruz to Point Reyes. Smog in the photo is from China. If you can see smog from a satellite, it's bad.

Member Since: October 4, 2011 Posts: 0 Comments: 1234
230. washingtonian115 2:29 AM GMT on May 02, 2012    
Quoting WxGeekVA:


Doug Hill was way better...sad to see he's being phased out over at ABC7...
Well Sue isn't that bad and I look forward to her forecast every night.Tucker Barnes in the Morning isn't the best but at least he still makes for a decent forecast.
Member Since: August 14, 2010 Posts: 5 Comments: 10665
231. PedleyCA 2:30 AM GMT on May 02, 2012    
Quoting Skyepony:
That trough that was over SFL to Cuba last weekend has twisted up a bit in the gulf. Though still depicted as a trough on the surface map it looks to be firing from the surface, like a Low. Pretty sloppy. Click pic to animate. Rainbow really shows how the MVC over TX touched the convection off.



Did you mean MCV?
Member Since: February 29, 2012 Posts: 0 Comments: 2156
232. Tropicsweatherpr 2:41 AM GMT on May 02, 2012    
Here comes the rain for Puerto Rico that may last until the weekend.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
1016 PM AST TUE MAY 1 2012

.UPDATE...SHOWERS AND A FEW THUNDERSTORMS ARE MOVING IN FROM THE
SOUTHEAST INTO THE LOCAL CARIBBEAN WATERS. THERE IS ABUNDANT
MOISTURE TO THE SOUTHEAST OF THE LOCAL AREA AND IT IS APPROACHING
THE AREA. THESE SCATTERED SHOWERS ARE EXPECTED TO CONTINUE TO MOVE
CLOSER TO OUR LOCAL AREA OVERNIGHT...INCREASING CLOUDINESS AND
SHOWER ACTIVITY OVER THE USVI AND EASTERN PUERTO RICO. COMPUTER
MODELS INSIST IN DEEP MOISTURE MOVING IN FROM WEDNESDAY UNTIL AT
LEAST FRIDAY...THURSDAY BEING THE DAY WITH THE MORE WIDESPREAD
SHOWERS. THE 02/00Z SOUNDING INDICATED A CONSIDERABLE INCREASE IN
MOISTURE AND INSTABILITY AT THE LOCAL AREA. IN ADDITION...FORECAST
SOUNDINGS CONTINUE TO INDICATE AN INCREASE IN MOISTURE AND INSTABILITY
OVER THE AREA WITH PRECIPITABLE WATER VALUES REACHING OVER 2.2
INCHES ON THURSDAY...CURRENTLY HOWEVER...BLENDED SATELLITE TPW
IMAGERY IS SHOWING PRECIPITABLE WATER VALUES OF OVER 2.4 INCHES TO
THE SOUTHEAST OF THE LOCAL AREA. AT THIS TIME WE EXPECT NUMEROUS
SHOWERS ON WEDNESDAY THROUGH FRIDAY WITH MOST OF THE ACTIVITY OVER
THE USVI AND THE INTERIOR AND NORTHERN PORTIONS OF PUERTO RICO.
Member Since: April 29, 2009 Posts: 64 Comments: 8232
233. Skyepony (Mod) 2:55 AM GMT on May 02, 2012    
Quoting PedleyCA:


Did you mean MCV?


I did.. lol, & just after the excellent definition & all posted there.

Quoting kipperedherring:
Very suspicious! I think only Eugene Tillman can properly analyze this.


Our you can refer to Nowcoast. Turn on the wind feature & zoom on in..just missing the west wind.
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234. aspectre 2:55 AM GMT on May 02, 2012    
Scene from Swan Walk
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235. sunlinepr 2:55 AM GMT on May 02, 2012    
Coalition requests UN intervention to stabilize Spent Fuel Pool No. 4 at Fukushima — Endorsed by nuclear experts


Link

Urgent Request to UN Secretary General Ban Ki-moon
Source: Green Action Japan
Date: May 1, 2012

To: UN Secretary General Ban Ki-moon

An Urgent Request on UN Intervention to Stabilize the Fukushima Unit 4 Spent Nuclear Fuel

Recently, former diplomats and experts both in Japan and abroad stressed the extremely risky condition of the Fukushima Daiichi Unit 4 spent nuclear fuel pool and this is being widely reported by world media. Robert Alvarez, Senior Scholar at the Institute for Policy Studies (IPS), who is one of the best-known experts on spent nuclear fuel, stated that in Unit 4 there is spent nuclear fuel which contains Cesium-137 (Cs-137) that is equivalent to 10 times the amount that was released at the time of the Chernobyl nuclear accident. Thus, if an earthquake or other event were to cause this pool to drain, this could result in a catastrophic radiological fire involving nearly 10 times the amount of Cs-137 released by the Chernobyl accident.

Nearly all of the 10,893 spent fuel assemblies at the Fukushima Daiichi plant sit in pools vulnerable to future earthquakes, with roughly 85 times more long-lived radioactivity than released at Chernobyl.

Nuclear experts from the US and Japan such as Arnie Gundersen, Robert Alvarez, Hiroaki Koide, Masashi Goto, and Mitsuhei Murata, a former Japanese ambassador to Switzerland, and, Akio Matsumura, a former UN diplomat, have continually warned against the high risk of the Fukushima Unit 4 spent nuclear fuel pool.

US Senator Roy Wyden, after his visit to the Fukushima Daiichi nuclear power plant on 6 April, 2012, issued a press release on 16 April, pointing out the catastrophic risk of Fukushima Daiichi Unit 4, calling for urgent US government intervention. Senator Wyden also sent a letter to Ichiro Fujisaki, Japan’s Ambassador to the United States, requesting Japan to accept international assistance to tackle the crisis.

We Japanese civil organizations express our deepest concern that our government does not inform its citizens about the extent of risk of the Fukushima Daiichi Unit 4 spent nuclear fuel pool. Given the fact that collapse of this pool could potentially lead to catastrophic consequences with worldwide implications, what the Japanese government should be doing as a responsible member of the international community is to avoid any further disaster by mobilizing all the wisdom and the means available in order to stabilize this spent nuclear fuel. It is clearly evident that Fukushima Daiichi Unit 4 spent nuclear fuel pool is no longer a Japanese issue but an international issue with potentially serious consequences. Therefore, it is imperative for the Japanese government and the international community to work together on this crisis before it becomes too late. We are appealing to the United Nations to help Japan and the planet in order to prevent the irreversible consequences of a catastrophe that could affect generations to come. We herewith make our urgent request to you as follows:

1. The United Nations should organize a Nuclear Security Summit to take up the crucial problem of the Fukushima Daiichi Unit 4 spent nuclear fuel pool.

2. The United Nations should establish an independent assessment team on Fukushima Daiichi Unit 4 and coordinate international assistance in order to stabilize the unit’s spent nuclear fuel and prevent radiological consequences with potentially catastrophic consequences.
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236. PedleyCA 3:02 AM GMT on May 02, 2012    
Well, Good Night All. To you in the Northern U.S. Watch your backs and Stay Safe. Good Rest to All, later..................
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237. sunlinepr 3:04 AM GMT on May 02, 2012    
Getting active the ITCZ over SA and EPac....

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238. sunlinepr 3:06 AM GMT on May 02, 2012    
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239. sunlinepr 3:07 AM GMT on May 02, 2012    
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240. RTSplayer 3:19 AM GMT on May 02, 2012    
235:

I don't even want to contemplate the human consequences of what happens if that pool actually goes.

The entire nation of Japan will have to be evacuated and abandoned, if that's even physically possible.

And that's just for starters.

No telling what happens for the east coast of China, or Alaska and western U.S. and Canada.
Member Since: January 25, 2012 Posts: 27 Comments: 875
241. BahaHurican 3:26 AM GMT on May 02, 2012    
Some friends of mine from Guyana tell me that ITCZ activity at this time of year leads to several weeks of constantly rainy weather similar to what we experienced this past weekend in the Bahamas, Cuba and S Florida.

Because it is so far south, Guyana is well outside the hurricane belt and very much in the ITCZ. I'd suppose a TC landfall there would be on the order of a 1 in 500 year event. But when T-waves "run into South America", it's typically Surinam, Guyana and later Venezuela that they hit - and, I suppose, drench.
Member Since: October 25, 2005 Posts: 19 Comments: 17673
242. sunlinepr 3:32 AM GMT on May 02, 2012    
Venus to Appear in Once-In-A-Lifetime Event

ScienceDaily (May 1, 2012) — On 5 and 6 June this year, millions of people around the world will be able to see Venus pass across the face of the Sun in what will be a once-in-a-lifetime experience.

It will take Venus about six hours to complete its transit, appearing as a small black dot on the Sun's surface, in an event that will not happen again until 2117.....

Link


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243. snotly 3:49 AM GMT on May 02, 2012    
Looks like a tornado on this one

West of Lincoln, NE

Link
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244. JRRP 3:51 AM GMT on May 02, 2012    
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245. wxmod 3:59 AM GMT on May 02, 2012    
Quoting JRRP:




There's a big dust storm that will probably suppress buildup of this activity, in case you are expecting a hurricane.
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246. JRRP 4:02 AM GMT on May 02, 2012    
Quoting wxmod:




There's a big dust storm that will probably suppress buildup of this activity, in case you are expecting a hurricane.

really ????
oooooo....!
Member Since: August 16, 2007 Posts: 0 Comments: 4315
247. KoritheMan 4:05 AM GMT on May 02, 2012    
Quoting wxmod:




There's a big dust storm that will probably suppress buildup of this activity, in case you are expecting a hurricane.


I doubt that's our first tropical wave. But if it is, it might become Aletta later on in the Pacific. Just maybe.

/end offseason boredom rant
Member Since: March 7, 2007 Posts: 410 Comments: 15463
248. Some1Has2BtheRookie 4:07 AM GMT on May 02, 2012    
Quoting snotly:
Looks like a tornado on this one

West of Lincoln, NE

Link


That looks like it is headed to Freemont.
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249. KEEPEROFTHEGATE (Mod) 4:09 AM GMT on May 02, 2012    
Quoting kipperedherring:
Very suspicious! I think only Eugene Tillman can properly analyze this.
oh i am sure i will get right on that
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250. KEEPEROFTHEGATE (Mod) 4:15 AM GMT on May 02, 2012    
dust of africa

bright pink regions is dust

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251. 1900hurricane 4:15 AM GMT on May 02, 2012    
After having a very wet start to the year, things have really dried out here lately.

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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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