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Rain rain go away, etc…

September 04, 2012 @ 15:47 By: gordon Category: Weather

So, I just took a look at the Franktown radar and saw this:

My immediate response was: eww!

The aviation forecast is equally impressive:

TAF CYOW 041738Z 0418/0518 18005KT P6SM -SHRA BKN025 OVC040 TEMPO 0418/0420 2SM TSRA BR BKN008 OVC020CB
FM042000 18005KT P6SM -SHRA SCT015 OVC030 TEMPO 0420/0501 3SM -SHRA BR BKN015 OVC030 PROB30 0420/0501 2SM TSRA BR BKN008
OVC020CB
FM050100 05005KT 6SM BR FEW005 OVC070 PROB30 0501/0508 2SM BR BKN005
FM050800 35005KT P6SM FEW020 SCT100 TEMPO 0508/0513 BKN020
FM051700 VRB03KT P6SM BKN040
RMK NXT FCST BY 042100Z=

My rule of thumb concerning TAFs is the longer they are, the more the weather is going to suck.

In this case, the suck factor is fairly high because there’s rain and mist with periods of thunderstorms between now and about 9pm this evening. I’ve circled the likely culprits for the thunderstorms and put a little arrow indicating the rough direction that line was moving as it came in the radar’s coverage area. The interesting thing you can see if you watch the loop is that the big green mass is moving northeast while the line of thunderstorms is moving southeastish. It looks like they’re converging on Ottawa, so things could be a bit exciting this evening.

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