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WxChallenge 2013-14


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55/39/17/0.07"

 

Had 40, then 38, then 39 for the low. The warm front will be right on GRR's doorstep by 6z...if it doesn't quite get there the low will be something like 37, if it passes by 6z (less likely) it could well be something like 42 or 43. The high will be late tomorrow evening...I can't believe the consensus high is only 50. There could be a nice mid-level dry slot that keeps rainfall amounts low tomorrow...but wasn't confident enough to go the 0.00" route as radar is indicating there may still be some showers around at 6z tonight...with another chance for a few showers tomorrow evening as the cold front approaches.

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Assuming precip gets to 0.31"+ by 6z (which it should, considering it was at 0.29" at 1z and still raining) and temps don't rise above 41F by 6z (it'll be close but I hope they don't because 39 is my day 2 low forecast) I'll be inside the top 100 and above the national consensus. I thought I was screwed earlier today when the colder low didn't work and the precip underperformed early on, nice to actually see things break well for me (even though I misjudged the low) for once.

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Another solid batch of precip moving in...I had .55 today ...they are probably up to about .35 or so...still some work to do.

 

 

Evidently they saw 0.00" last hour so 0.31" so far...around 0.40" seems reasonable. I had 0.40" at first but then jumped down to 0.33" last second...still was a decent call on precip overall...we'll see if it can get any closer to your 0.55".

 

For tomorrow's high I can see 53 or 54 (I have 55) but I can't believe so many went 50 or lower...there's a slim chance that happens...every model is 50+ and I'd certainly take the over with a deepening low to the west and strong WAA most of the day, especially in the evening.

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Evidently they saw 0.00" last hour so 0.31" so far...around 0.40" seems reasonable. I had 0.40" at first but then jumped down to 0.33" last second...still was a decent call on precip overall...we'll see if it can get any closer to your 0.55".

 

For tomorrow's high I can see 53 or 54 (I have 55) but I can't believe so many went 50 or lower...there's a slim chance that happens...every model is 50+ and I'd certainly take the over with a deepening low to the west and strong WAA most of the day, especially in the evening.

Agreed.

 

I'm a little surprised with the 0.00" last hour, but oh well, a few more hours to go yet. I think best case for me is like .44", but we'll see. I agree that it will likely be around .40" for today. 

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Currently dead last at UML for forecasters who haven't missed a forecast.......wtf?

Maybe as the temps, winds and possibly precip come up towards your forecast later you'll come out of the basement? Right now someone who really low balled temps or winds may be showing as doing well today but that won't hold.
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I was 67th after yesterday, by far my best day 1 out of any city. That was a quick little dousing and I hope they don't get too much more rain. If the high and wind cooperate (the RAP shows 925mb winds cranking up to 40-45 knots later out of the south, so I'd really hope we could add 4 degrees to the high and see 15-20 knot sustained winds, I have 17 knots) I would creep into at least the top 20. This is going to be the closest city to me in the whole tournament so I really need to nail it in GRR.

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53/26/21/0

 

Front should be just passing if not a bit through GRR by 6z tonight so we should lose a couple of degrees off of the mid-50's high we'll see later this evening. Went 0" precip for a number of reasons. There are some meager showers along the front right now that aren't producing any measurable rain...don't see a big reason to expect things to intensify much as they approach GRR, and even if they do there's a chance the front is through by 6z. The lake effect setup doesn't support any measurable precip/snow in GRR either. It takes until later in the day for 850mb temps to become cold enough for lake effect processes, and at this point the winds will be shifting to a more unfavorable W to WNW direction...I'm not an expert but I believe GRR does well in SW or WSW flow events. In addition, the airmass will be really dry and lake induced equilibrium levels will be nothing impressive.
 

With winds remaining up and off the lake through tomorrow evening didn't go too cold on the low. Winds may become more NW later tomorrow night and may begin to slacken enough for some radiational cooling to occur, but banked on that happening after 6z. Went decently high on winds as models show about 30 knots at the top of the shallow mixed layer in a CAA regime.

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Tomorrow night's low is tricky with the arctic air settling in. Despite this, we should still have a nice fetch off the lake, which should help to modify and moisten the airmass somewhat. If they do manage to get stuck under a band, they could hold up in the upper 20's before 6z. 

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54/25/25/0

 

I think this is strongly wind-direction dependent. If the wind direction has indeed switched to WSW or SW by 06z, the lake will probably allow it to cool to 50F or so. But if it's more SSWerly still, which is what I'm counting on, it could be even higher than my 54F.

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