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View Full Version : Nov.12.03 - MDT for SRN ON


Derecho
11-03-2010, 11:04 AM
Now this is something! Did anything happen on this day in southern Ontario?

November 12, 2003:

http://www.spc.noaa.gov/products/outlook/archive/2003/day1otlk_20031112_1630_prt.gif

http://www.spc.noaa.gov/products/outlook/archive/2003/day1probotlk_20031112_1630_torn_prt.gif

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1029 AM CST WED NOV 12 2003

...THERE IS A MDT RISK OF SVR TSTMS OVER PORTIONS OF THE OH VALLEY
AND GREAT LAKES...

...THERE IS A SLGT RISK OF SVR TSTMS OVER THE OH VALLEY...GREAT
LAKES AND PORTIONS OF NERN U.S....

DEGREE OF FORCING ALONG AND JUST AHEAD OF THE FRONT
SUGGEST STORMS SHOULD EVOLVE INTO LINES OR LINE SEGMENTS WITH
EMBEDDED SUPERCELL AND BOW/LEWP STRUCTURES. PRIMARY THREAT SHOULD BE
DAMAGING WIND. A CONDITIONAL THREAT FOR ISOLATED TORNADOES
EXISTS...ESPECIALLY IF DISCRETE STORMS CAN DEVELOP.

READ MORE: http://www.spc.noaa.gov/products/outlook/archive/2003/day1otlk_20031112_1630.html
STORM REPORTS: http://www.spc.noaa.gov/climo/reports/031112_rpts.html

DarkSky
11-03-2010, 02:20 PM
Wow that's going back longer than I can recall. If anything happened there would be at least SOMETHING mentioned of it on here.

obwan
11-03-2010, 04:39 PM
heres what darksky posted for 2003, including the nov 12 episode. I recall Niagara Falls getting golf ball to tennis ball sized hail once can't rmember if that was the time or not. http://www.ontariostorms.com/2003/

i found this (12-13 November 2003, Southwestern Ontario: An intense storm system starts with a line of severe thunderstorms and damaging winds the evening of the 12th. By morning, the howling, polar winds gusting in excess of 110 km/h (68 mph) drives snowsqualls over the region, damaging buildings and trees and cutting power to thousands) here. http://www.islandnet.com/~see/weather/almanac/diarynov.htm

tnis from EC, Witches of November Storm http://www.ec.gc.ca/meteo-weather/default.asp?lang=En&n=C11F81B4-1


During one storm in November 2003, the water level at Buffalo rose by 7 feet (2.1 m) with waves of 10–15 feet (3-4.5 m) for a rise of 22 feet (6.7 m).[8] Meanwhile, at the western end of the lake, Toledo experienced a similar drop in water level
http://www.glerl.noaa.gov/seagrant/glwlphotos/Seiche/1113Storm/November2003.html


As a side note i found this

Great Waterspout Outbreak - 2003. A meteorological oddity of sorts! Waterspouts are tornadoes over water. According to Environment Canada meteorologist Wade Szilagyi, a record waterspout outbreak occurred in late September-early October over the Great Lakes. It was the largest outbreak that has ever been recorded - an unbelievable 66+ waterspouts. The outbreak was attributed to a cold air mass, and associated major upper trough, which remained entrenched over the Great Lakes for a period of a week. Above-normal lake temperatures also contributed to this unusual event.

Derecho
11-03-2010, 07:35 PM
heres what darksky posted for 2003, including the nov 12 episode. I recall Niagara Falls getting golf ball to tennis ball sized hail once can't rmember if that was the time or not. http://www.ontariostorms.com/2003/

i found this (12-13 November 2003, Southwestern Ontario: An intense storm system starts with a line of severe thunderstorms and damaging winds the evening of the 12th. By morning, the howling, polar winds gusting in excess of 110 km/h (68 mph) drives snowsqualls over the region, damaging buildings and trees and cutting power to thousands) here. http://www.islandnet.com/~see/weather/almanac/diarynov.htm

This from EC, Witches of November Storm http://www.ec.gc.ca/meteo-weather/default.asp?lang=En&n=C11F81B4-1






^^^ The 'Witches of November Storm'! That's it!

I remember that, I had no idea we were under a moderate risk of tornadoes that day. Looks like a similar set up to last Tuesday. Strong low develops in the Midwest, serial derecho forms with intense winds behind the system.

That morning, or probably the morning after the day of the MDT, I was getting ready for school(I was in grade 9 in 2003) when the transformer station behind the house blew up from the wind in a spectacular explosion. Instead of a 'boom!' it made a 'zzzzing!' noise- for what it's worth.

The winds were incredible, and though there was no power at home, I was still dropped off at school by my father.

I was at my locker before first period when the lights went out. A group of us ended up huddling in the music room beneath the emergency light, when teachers went around the building on bullhorns instructing everyone to head to the gym. Once in the gym, they closed the school and we all had to walk home.

My neighbourhood was still under construction in 2003, our house was the first built in August 2003. When I made it to the end of the street, a row of townhouses under construction had collapsed in the wind. Also, there was building debris everywhere, it looked like a hurricane was in progress. If I'm not mistaken, winds gusted over 100kmh multiple times in Waterloo that day.

I don't remember any thunderstorms that day or the day before, or even if it rained at all.

davefootball123
11-03-2010, 09:43 PM
I was look at the past storm events index and it looks like we had a pretty nice squall line roll through, that is pretty late in the year eh :p