Tornadoes kill 3 in Michigan...

By: Dr. Jeff Masters , 2:10 PM GMT on October 19, 2007

Share this Blog
2
+

More tornadoes hit the U.S. on Thursday and early Friday morning, causing damage and injuries in Michigan, Indiana, Kentucky, and Florida. A 29-year old man was killed in Kalkasaka County, Michigan, when a tornado destroyed his home. Two other people were killed in Williamston, Michigan, after a tornado destroyed their lakefront home. In Nappanee, Indiana, five people were injured and 20 homes destroyed by a tornado at 10:30 pm. At least eight people were injured in western Kentucky from a series of tornadoes that raked the area, and a tornado hit downtown Pensacola, Florida, flipping cars and damaging the town's main shopping mall. A tornado that hit near Paris, Missouri, killing two people just after midnight on Thursday, was rated as an EF-2 storm with top winds of 135 mph.

The storm system that spawned this week's severe weather has moved over the Eastern U.S., and there is a chance of severe weather today from Florida northwards to New England, according to the latest severe weather outlook from the Storm Prediction Center. Only isloated tornadoes are likely today, as the atmosphere is not nearly as unstable as it was Wednesday and Thursday.

"Medicane" (Medepression?) hits Spain
A tropical storm-like system swept over the island of Majorca in the Mediterranean on Wednesday, triggering flooding that killed two people. The storm then made landfall on the Mediterranean coast of Spain yesterday morning near the city of Murcia. The satellite presentation of the storm at landfall (Figure 1) showed well-formed spiral bands and a cloud-free center. Murcia, Spain reported sustained winds of 30 mph, gusting to 45 mph, at 14 GMT Thursday. A personal weather station in Santa Pola recorded sustained winds of 40 mph, gusting to 45 mph, and 0.68 inches of rain during passage of the storm. We have a number of other personal weather stations in the region, but none reported higher winds, or a pressure lower than 1013 mb. Radar from the Spanish Instituto Nacional de Meteorologia (Figure 2) showed some well-organized banding. The UKMET model did not indicate the storm had a warm core, so this was likely not a true tropical depression. Sea surface temperatures were about 23° C (about 1° C warmer than normal) under the storm, which is quite a bit colder than the 26.5° C usually associated with tropical storm formation. The satellite presentation suggests that the storm was probably generating a shallow warm core near the surface, and was getting some of its energy from release of latent heat--the same energy source that powers tropical cyclones. Yesterday's "Medepression" was probably a hybrid tropical/extratropical storm, and was predominantly non-tropical.


Figure 1. Satellite image from NOAA-17 polar orbiting satellite at 10:37 GMT 10/18/07. Image credit: U.S. Navy.


Figure 2. Radar image at 6:20 GMT for the Mediterranean coast of Spain. Image credit: Spanish Instituto Nacional de Meteorologia (INM).

Warm-cored hybrid storms have been reported in the Mediterranean Sea before, and there is a large body of scientific literature published on the subject (see below). These storms can become quite severe and cause considerable damage. However, there is no system in place to name these storms, and the National Hurricane Center is not responsible for issuing warnings in the Mediterranean Sea. There are quite a few "Medicanes" in past years that would have earned names as subtropical storms had NHC been responsible for warnings in the Mediterranean Sea. There is concern that global warming may raise sea surface temperatures enough in the Mediterannean later this century to allow full-fledged hurricanes to form and threaten the densely populated cities that dot the coast.

Some of the scientific literature discussing hybrid storms in the Mediterrean Sea:

Emmanuel, K., 2005, "Genesis and maintenance of Mediterranean hurricanes", Adv. Geosci., 2, 217-220.

Lagouvardos K., V. Kotroni, S. Nickovic, D. Jovic, and G. Kallos, 1999: "Observations and model simulations of a winter sub-synoptic vortex over the Central Mediterranean", Meteorol. Appl., 6, 371-383.

Mayengon, R., 1984, "Warm core cyclones in the Mediterranean", Mariners Weather Log, 28: 6?9.

Pytharoulis, I., G.C. Craig and S. P. Ballard, 2000, "The hurricane-like Mediterranean cyclone of January 1995", Meteorol. Appl., 7, 261-279.

Rasmussen, E. A., and Turner J., 2003: Polar Lows, Cambridge Press. 214-219

Rasmussen, E. & Zick, C., 1987, "A subsynoptic vortex over the Mediterranean with some resemblance to polar lows", Tellus, 39A: 408-425.

Reale, O., and R. Atlas, 2001, "Tropical Cyclone-Like Vortices in the Extratropics: Observational Evidence and Synoptic Analysis", Weather and Forecasting, 16, No. 1, pp. 7-34.

Reale, O. ,1998, "Dynamics and classification of two sub-synoptic scale "Hurricane-like" vortices over the Mediterranean Sea", Annales Geophysicae Part II: Hydrology, Oceans & Atmosphere (Supplement II to Volume 16), EGS, C634.

How to search for strongest winds from a storm
A good way to search for the strongest winds from a storm in our personal weather station data is to load a google map for the region of interest:

http://www.wunderground.com/stationmaps/gmap.asp? zip=00000&wmo=08360

Then, click on the station plot for stations of interest. The history page will then pop up, allowing one to see plots and tabular data for today beginning at midnight local time for the station. Airport weather data and conditions from U.S. buoys are also available on the same google map. Use the search box at upper right to change the location the map is centered on.

Tropical update
The tropical Atlantic is quiet today. The GFS model is predicting formation of a tropical cyclone on Tuesday about 800 miles east of the Lesser Antilles Islands. None of the other models are going along with this forecast. If there are no major developments to report this weekend, I may not update this blog until Monday.

Jeff Masters

Pensacola Tornado (Mslider31)
Looking west down Cervantes from Barcelona.
Pensacola Tornado
Storm Clouds (pwaleska)
Storms rumbled throughout MI as October thought it was April. Great clouds, moving fast!
Storm Clouds
Beautiful Storm (Kristina)
Taken while chasing in Oklahoma around the OKC area
Beautiful Storm

Reader Comments

Comments will take a few seconds to appear.

Post Your Comments

Please sign in to post comments.

or Join

Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.

Display: 0, 50, 100, 200 Sort: Newest First - Order Posted

Viewing: 1174 - 1124

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25Blog Index

1173. cchsweatherman
11:40 AM GMT on October 22, 2007
Seems like all the computer models hint of tropical development around the Lesser Antilles in 5 to 6 days. The CMC looks to be on crack right now showing a cold front sparking off two strong tropical systems in the Western Caribbean. But, the models do agree with its projected development of a tropical system around the Northern Lesser Antilles. Comments on this?

I will have a full update on my website today including the first cold front of the season for South Florida later this week.
Member Since: Posts: Comments:
1172. TampaSpin
7:28 AM EDT on October 22, 2007
There is a possible spinner just off shore SE of Pensicola
Member Since: September 2, 2007 Posts: 179 Comments: 20448
1170. Thundercloud01221991
11:17 AM GMT on October 22, 2007
I am here
Member Since: Posts: Comments:
1168. TampaSpin
7:13 AM EDT on October 22, 2007
morning everyone.
Member Since: September 2, 2007 Posts: 179 Comments: 20448
1167. weatherg8r
11:07 AM GMT on October 22, 2007
Good morning....if anyone is lurking?
Member Since: Posts: Comments:
1166. underthunder
5:00 AM CST on October 22, 2007
lol....never mind....Intellicast answered for me....
Member Since: Posts: Comments:
1165. underthunder
4:47 AM CST on October 22, 2007
morning ya'll...was gone all weekend...was wondering if anyone could catch me up on what the "blob" south of Mobile was all about...thanks
Member Since: Posts: Comments:
1164. Weather456
6:36 AM AST on October 22, 2007
Snow In Eastern Colorado



Other Images centered on Boulder, Colorado

Member Since: Posts: Comments:
1163. Weather456
6:08 AM AST on October 22, 2007
Good Morning

From Last Night

Bow echoes, when they occur, usually occur with a grouping of multicell storms that are arranged into a squall line. The upper tropospheric winds steer storms. These winds help determine the speed and direction that the storms move. The upper tropospheric winds will not always be constant along a squall line. In the regions these winds are stronger that portion of the squall line will surge forward. Also, in regions these winds are drier that portion of the squall line will surge forward because evaporational cooling creates negative buoyancy that will further accelerate a downdraft toward the surface. Since the downdraft from a squall line approaches the earth's surface at an angle, the faster the downdraft winds the faster the storms may migrate forward.

Member Since: Posts: Comments:
1162. moonlightcowboy
6:33 AM GMT on October 22, 2007
State of Disaster in Nicaragua after intense rains

MANAGUA.— The president of Nicaragua, Daniel Ortega, on Friday, decreed the whole country in a state of disaster. This is a result of the serious damage caused by the meteorological phenomena which have affected the country for the last 47 days.

Ortega signed the document after listening to an itemized report of the affectations that began in there on September 4, when Hurricane Felix devastated the north end of the Atlantic Coast.

At the meeting was a delegation from the Government of Venezuela, headed by the Foreign Minister, Nicolas Maduro.

The Venezuelan mission arrived in Nicaragua Friday morning to evaluate the magnitude of the damage, and to determine the best possible way to help those affected.

47 days after the emergency began, the official figures for the whole of Nicaragua are 109 dead, 133 people missing, 216,000 victims of the damage, more than 22,000 houses affected, and 3,000 kilometers of roadways destroyed.
Member Since: Posts: Comments:
1161. Babsjohnson
6:27 AM GMT on October 22, 2007
Jeff, are you related to Squeeky Fromme?
Member Since: Posts: Comments:
1160. moonlightcowboy
6:21 AM GMT on October 22, 2007
1159. KEEPEROFTHEGATE (Mod)
4:15 AM GMT on October 22, 2007
someting real big gonna pop i got a feeling dont like the way vapour comin off gulf that mid level over tex/oka may go deep cutoff 36 hrs out
Member Since: Posts: Comments:
1158. beell
4:12 AM GMT on October 22, 2007
Thanks for the space-Heading to Square Lake (bed).
Nighty-Nite All
Member Since: Posts: Comments:
1157. beell
4:03 AM GMT on October 22, 2007
You can kinda picture some training of precip setting up based on the movement of t-storms in OK and the High centered out in the Atl and this chart. It's supposed to move off to the east a bit. Storms can only progress east as fast as the front. So the keep forming and moving over the same place. A bit of a squeeze
Member Since: Posts: Comments:
1156. KEEPEROFTHEGATE (Mod)
3:56 AM GMT on October 22, 2007
test
Member Since: Posts: Comments:
1155. cajngranny
10:52 PM CDT on October 21, 2007
Tampa - LOL games were good, weather was great today, people were doing other things, I guess. Nice of the tropics to slow down right now. of course, have to still check that GOMEX every so often.
Member Since: Posts: Comments:
1154. TampaSpin
11:52 PM EDT on October 21, 2007
got 5 radars open over the Nothern GOM area.
Member Since: September 2, 2007 Posts: 179 Comments: 20448
1153. TampaSpin
11:50 PM EDT on October 21, 2007
Blog still dragging.
Member Since: September 2, 2007 Posts: 179 Comments: 20448
1151. KEEPEROFTHEGATE (Mod)
3:12 AM GMT on October 22, 2007
back side starting the draw off rtn flow from gom over backbone of texas into oka.plains sysyem is under rapid developement phase severe wx possible
Member Since: Posts: Comments:
1150. tiggeriffic
3:12 AM GMT on October 22, 2007
blog lagging too much, admin needs to fix the glitch, i'm out for the night, too much time between posts and have to get up early for work, nite all! BOING!
Member Since: Posts: Comments:
1149. catastropheadjuster
3:09 AM GMT on October 22, 2007
Where is everyone?
Member Since: Posts: Comments:
1148. catastropheadjuster
2:49 AM GMT on October 22, 2007
SL: Hey, How bad do you think it might get here in Mobile,AL? I am waiting for the news to come on. Where up under flash flood warning right know. I am just wondering been working 14 hour shifts at the Laundre matt all week and havent been able to get on. I have to get up at 4 in the morning. But thanks if ya have time to answer.
Sheri
Member Since: Posts: Comments:
1147. pottery2
10:46 PM AST on October 21, 2007
.and just so I can say I am talking weather, " it rained and it rained and it rained, Pooh had never seen so much rain .."

Good night all....
Member Since: Posts: Comments:
1146. tiggeriffic
2:51 AM GMT on October 22, 2007
TY very much...blog lagging is enuf to drive a sane man crazy...
Member Since: Posts: Comments:
1145. pottery2
10:41 PM AST on October 21, 2007
Good one ! And Tigger is one of my most favourite characters, along with Eyore.
Member Since: Posts: Comments:
1144. tiggeriffic
2:38 AM GMT on October 22, 2007
Caption is don't let life get you upside down...if it does, be like tigger and bounce back!
Member Since: Posts: Comments:
1143. SouthernLady
9:40 PM CDT on October 21, 2007
It's stuck in a 'time warp'...LOL

Looking forward to the rain and some cooler temps!!!
Member Since: Posts: Comments:
1142. pottery2
10:35 PM AST on October 21, 2007
Good to see you, even though you appear to me to be up-sided down. I have no problem with that of course,but it surely means that you see things from a different perspective. I must try it out myself.
Do you recommend it ?
Member Since: Posts: Comments:
1141. tiggeriffic
2:35 AM GMT on October 22, 2007
blog still lagging tonight...what up?
Member Since: Posts: Comments:
1140. tiggeriffic
2:33 AM GMT on October 22, 2007
Tired but here...been a long day, lol
Member Since: Posts: Comments:
1139. pottery2
10:26 PM AST on October 21, 2007
BOING yourself, Tigger. How are you this evening.
Member Since: Posts: Comments:
1138. thelmores
2:29 AM GMT on October 22, 2007
mobile blob startin to take shape..... but the shear, and close proximity to land should limit..... but a stormy nite for the Mobile area.....




Member Since: Posts: Comments:
1137. tiggeriffic
2:24 AM GMT on October 22, 2007
BOING! Evening all!
Member Since: Posts: Comments:
1136. pottery2
10:07 PM AST on October 21, 2007
Yeah, Baha. Peculiar. Sept rainfall at my home was 73 mm. Down from a 9 yr. average ( my measurements go back 9 yrs ) of 214.4 mm. So 30 % is what we got in Sept..
The Government has announced that the construction of 4 more Desal plants will go ahead. Not a bad idea, since the sea around here is low in salinity . However, we are 2 weeks from elections, and we take that type of announcement with a heap of doubt.
Member Since: Posts: Comments:
1135. ShenValleyFlyFish
9:59 PM EDT on October 21, 2007
1126. beell 9:04 PM EDT on October 21, 2007
That dog looks vicious gcd!

Don't matter what it looks like question round these parts is will it hunt?
Member Since: September 9, 2007 Posts: 36 Comments: 4687
1134. BahaHurican
9:56 PM EDT on October 21, 2007
Hey pottery,

I noticed that persistent pattern over that area of the SE Car / Antilles. I was wondering if that was normal for this time of year.

Here we have been having "abnormal" rain patterns also. Usually we get rain during the last week of August and first week of Sept. Everybody here says "it always rains the first day of school" and regardless of what your first day is, it's normally true. Not this year. Bone dry. Normally by now the weather has cleared out, unless there's a storm travelling. This year it's rained heavily for at least an hour four days a week. VERY unusual for late Sept and early/mid October.

Even WHERE on New Providence it rains has changed. Normal rain patterns have the NE and central part of the island receiving the bulk of the rain, with the SW in a sort of "rain shadow" caused by the hills running down the middle. This year we've been getting gully-washing, soaking downpours on the SW side of the island while, on the other side of the central range of hills - you got it - Bone dry.

I don't remember experiencing another year when patterns were this anomalous at this time of year.
Member Since: Posts: Comments:
1133. icmoore
9:49 PM EDT on October 21, 2007
Thanks Beell and pottery2 just checked in and found your answers! Rain and clearing out sounds good me. Have a great night.
Member Since: July 18, 2005 Posts: 9 Comments: 4147
1132. pottery2
9:11 PM AST on October 21, 2007
True, Beell. Thanks.
Member Since: Posts: Comments:
1130. beell
12:58 AM GMT on October 22, 2007
She looks like a 4-legged vampire bat!
just joshin' Boston's are sweet usually.
Member Since: Posts: Comments:
1129. pottery2
9:05 PM AST on October 21, 2007
Looks so Ryang. There is a nice flare-up going on now though.
Member Since: Posts: Comments:
1127. ryang
9:04 PM AST on October 21, 2007
Hey Pottery!

It might Pottery, there's no dry air, but south-westerly shear is blowing the convection of to the North-east.
Member Since: Posts: Comments:
1126. beell
1:03 AM GMT on October 22, 2007
That dog looks vicious gcd!
Member Since: Posts: Comments:
1124. beell
12:57 AM GMT on October 22, 2007
OK pot, steering weak to the wnw at 5knots per GFS 850mb. Shear is out of the West so convection is displaced from the wave to the E. Supposed to meander around then slip off to the NE between a High to the NW centered over the NW Atl and a High to the SE by next week.
I guess I could call this weakness between the ridges a trof and save a lot of breath.
See it also discussed in the TWD from Baja
Member Since: Posts: Comments:

Viewing: 1174 - 1124

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25Blog Index

Top of Page

About

Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

JeffMasters's Recent Photos

Lake Effort Snow Shower Over Windsor, Ontario
Sunset on Dunham Lake
Pictured Rocks Sunset
Sunset on Lake Huron