02 July 27, 2002 - ObserverXtra
02 July 27, 2002 - ObserverXtra
02 July 27, 2002 - ObserverXtra
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
What makes<br />
a storm a<br />
tornado?<br />
The storm that swept<br />
through the<br />
township on <strong>July</strong> 21<br />
had many residents<br />
thinking a tornado had<br />
touched down in St. Jacobs<br />
and Conestogo, something<br />
that Environment Canada<br />
has not confirmed.<br />
The wind and rain,<br />
described by some residents<br />
as a “white sheet” that<br />
enveloped trees and bushes<br />
and uprooted many of them<br />
in the process was actually<br />
what senior climatologist<br />
David Phillips calls a<br />
‘severe thunderstorm.’<br />
Determining what the<br />
disturbance was is largely<br />
based on eye witness<br />
accounts and the<br />
examination of data after<br />
the fact, when specific<br />
criteria are used to determine<br />
which label is most<br />
appropriate. For a severe<br />
thunderstorm, explained<br />
Phillips, three main criteria<br />
are used.<br />
“One, winds have to be<br />
about 90 km/h, gusts that<br />
would produce some very<br />
damaging kinds of<br />
situations. You get hail<br />
that was maybe golf ball<br />
size, maybe an inch-and-ahalf<br />
or greater. Or you<br />
could have very heavy<br />
rain, say 50 mm in less<br />
than three hours,” said<br />
Phillips. “All of those<br />
would be severe criteria,<br />
which would prompt an<br />
issuing of a severe<br />
thunderstorm warning.<br />
Implied in that is the<br />
possibility that tornados<br />
could be embedded. We<br />
would not issue a tornado<br />
warning unless we<br />
actually saw it.<br />
“Now all of that is to say<br />
that in a severe<br />
thunderstorm—and there<br />
were severe thunderstorm<br />
warnings in the St. Jacobs,<br />
Guelph, and Kitchener-Waterloo-Cambridge<br />
area—<br />
you can get events. You can<br />
get happenings within severe<br />
thunderstorms that<br />
can give you the damage of<br />
a tornado, but not the twisting<br />
of the tornado. In other<br />
words, the downburst<br />
winds, the cold air coming<br />
straight down from the<br />
upper air, inside that<br />
[downburst] you can have<br />
both air rising and both air<br />
falling, and as the air<br />
descends – and there were<br />
some very significant<br />
temperature changes that<br />
took place because the cold<br />
air is very heavy, very<br />
dense, very thick – and<br />
when it gets moving down,<br />
it can move with a<br />
tremendous force that can<br />
uproot trees… They can<br />
certainly give you the same<br />
damage that a weak tornado<br />
could deliver,” he added.<br />
Phillips was careful to say<br />
that regardless of what the<br />
storm was called it does<br />
nothing to diminish the<br />
overall damage, and that<br />
making the differentiation<br />
often relies on examining<br />
the patterns in which the<br />
damage was caused.<br />
Tornados tend to produce<br />
erratic patterns of damage,<br />
whereas the up to 100 km/<br />
hr blasts of wind seen in a<br />
severe thunderstorm would<br />
cause a more regular<br />
pattern of damage. Only<br />
after the storm can this<br />
distinction be made as it has<br />
been in Woolwich in<br />
observations of the<br />
orientation of fallen trees –<br />
mostly towards the west –<br />
and in looking at flattened<br />
crops, which were all bent<br />
in the same direction<br />
regardless of the field’s<br />
location in the storm’s path.<br />
To further complicate<br />
the matter Phillips said<br />
there were several reports<br />
of funnel clouds in the<br />
area, which he described<br />
as “a twisting, rotating<br />
cloud that doesn’t touch<br />
the ground. There’s often<br />
no damage from them.”<br />
If a tornado had hit the<br />
area it wouldn’t be that<br />
uncommon though added<br />
Phillips, who said that in<br />
any typical year there are<br />
about 25 tornadoes in<br />
southwestern Ontario,<br />
still only 10 per cent of the<br />
total number of storms<br />
classified as severe<br />
thunderstorms.<br />
As further evidence<br />
Phillips said of<br />
approximately 100,000<br />
severe thunderstorms in<br />
North America only 1,000<br />
make it to tornado status –<br />
both scientifically and<br />
symbolically.<br />
“It almost becomes more<br />
of a status symbol to be hit<br />
by a tornado and people<br />
will get so irate with<br />
Environment Canada and<br />
say ‘what do you mean it<br />
wasn’t a tornado? I mean<br />
it was, I saw it,’” said<br />
Phillips. “When you have<br />
that air flying, always out<br />
of the top layer of clouds<br />
right down to the ground,<br />
when the air hits the<br />
ground and then it also<br />
squirts along – and you’ve<br />
got the motion of the storm<br />
too – it can be a pretty<br />
violent wind that can be<br />
well over 100 km/h.”<br />
Regardless of<br />
terminology however this<br />
was one storm that will<br />
keep the folks in Woolwich<br />
talking for some time.<br />
ELMIRA<br />
PRESIDENT’S CHOICE<br />
JULY <strong>27</strong>, 20<strong>02</strong> • NEWS • WOOLWICH OBSERVER 5<br />
WE CARRY A FULL LINE OF PRESIDENT’S CHOICE & NO NAME PRODUCTS<br />
INSTORE SPECIALS IN EFFECT<br />
JULY <strong>27</strong> - AUGUST 2, 20<strong>02</strong><br />
SELB LB LBY’S LB Y’S F FFRESHMAR<br />
F MAR MART MAR T M MMEA<br />
M EA EAT EA T S SSPECIAL<br />
S IAL IALS IAL<br />
Springer’s Whole<br />
Smoked Leg Hams<br />
Springer’s Smoked Butt or<br />
Shank Leg Hams<br />
Selby’s Smoked, Sliced<br />
Side Bacon<br />
Fresh<br />
Chicken Leg Quarters<br />
LASAGNA OR<br />
SPLENDIDO MEAT LASAGNA<br />
ALL SUMMER LONG - NO NAME<br />
ICE POPS OR<br />
SPACE POPS<br />
EVERYDAY PRICE - NEILSON<br />
HOME OF THE LARGEST FULL SERVICE MEAT COUNTER IN TOWN<br />
YOGURT<br />
(REGULAR OR FAT FREE)<br />
$1.49<br />
$1.49<br />
$1.69<br />
$1.69<br />
$2.99<br />
$2.99<br />
89¢<br />
89¢<br />
LB.<br />
LB.<br />
LB.<br />
0.99 0.99ea. 0.99<br />
$ 10.99 0.99<br />
(5LB TRAY - FROZEN)<br />
3.99<br />
$ 3.99<br />
3.99ea.<br />
(30’s - FROZEN)<br />
49<br />
49<br />
3.28kg<br />
3.73kg<br />
6.59kg<br />
49 ¢ ea.<br />
(125G)<br />
Fresh<br />
Chicken Drum Sticks<br />
Fresh Boneless<br />
Leg of Pork Roast<br />
----- DELI SPECIALS -----<br />
Springer’s Sliced<br />
Cooked Ham<br />
Selby’s Sliced Smoked or Cooked<br />
Turkey Breast<br />
EVERYDAY PRICE - PRESIDENT’S CHOICE<br />
ASSORTED VARIETY<br />
WOOD FIRED PIZZAS<br />
ALL SUMMER LONG - NO NAME<br />
LEMONADE<br />
(REG. OR PINK)<br />
EVERYDAY PRICE<br />
PRESIDENT’S CHOICE<br />
ORANGE JUICE<br />
$1.1 $1.19 $1.1<br />
$2.49<br />
$2.49<br />
$1.7 $1.79 $1.7<br />
$7 $7.49 $7 .49<br />
HUGO RODRIGUES<br />
SWUNG OVER The storm even took some of the fun out of summer… from left Candace Bustard, Madison Cashubec,<br />
Camellia Bustard, Eilish Cashubec, Taylor Connolly and Jordan Brueckman stand by their toppled swingset.<br />
HOWARD<br />
Selby’s Butcher<br />
4.99 4.99ea. 4.99<br />
$ 4.99<br />
2/ 2/79 2/<br />
¢<br />
(341ML - FROZEN)<br />
120 ORIOLE PKWY, ELMIRA 669-2333 STORE HOURS: Monday - Saturday 8am-9pm, Sundays 10am-5pm<br />
(558G)<br />
2.99<br />
$ 2.99<br />
2.62kg<br />
5.49kg<br />
3.95kg<br />
LB. 1.96kg<br />
LB. 16.51kg<br />
Count on our every day guaranteed low prices! Great grocery savings for your family!<br />
LB.<br />
LB.<br />
LB.<br />
ea.<br />
(ASSORTED VARIETY - 1.89L)