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October 16th-19th Storm.


SpartyOn

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You can't. No "one" model did best. Not to mention many aspects need to be considered...and it isn't even close to done yet. Track, intensity, rainfall totals, winds, etc all need to be considered. Already down to 986 per HPC. On pure deepening the RGEM will likely lead the way with its 980-981 it has suggested the last two days. NAM early on was down sub-980 then backed off. GFS was consistently 990+, but it was more consistent on placement of heavy qpf. Really can't pick a model "winner" here, especially not yet.

fair enough.

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RQB, OEB, IRS, JYM and AMN are reporting IP. MOP, HYX, RNP and BAX are reporting -SN.

Chance of any frozen precip actually being seen at those sites... 0.1%

Thanks Joe. After seeing the BAX METAR, I looked and scratched my head...45 degrees and light snow in the thumb of MI.

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Nice to see you guys off to the east getting some action tonight. Been awhile since we've had a decent storm wrap up in the Lakes.

We were grazed by a few showers earlier that totaled 0.02". Winds have been considerably less impressive than what the NAM had been advertising for this area over the last few days. I think the highest gusts have stayed at or below 25mph.

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0720 PM NON-TSTM WND GST 1 E KENOSHA 42.58N 87.80W

10/19/2011 M61 MPH LMZ646 WI C-MAN STATION

720 PM DATA-WIND SPEED 49 MPH WITH GUSTS TO 61 MPH.

SENSOR IS 63 FEET HIGH IN THE AIR.

***Note that is a pretty high wind sensor***

It's important to keep in mind (as is pointed out in this LSR) that the anemometer heights of the marine stations vary considerably and most are not actually 10m (33ft) winds (official surface wind height). Here are the peak gusts at the marine sites through around 6 am CDT, along with the height of the anemometer...

Kenosha 53 kt 61.0 mph 19.5 m 64.4 ft

Waukegan Harbor 51.1 kt 58.8 mph 9 m 29.7 ft

Harrison Crib 54 kt 62.1 mph 25.9 m 85.5 ft

Calumet Harbor 45.1kt 51.9 mph 9.1 m 30 ft

Burns Harbor 48 kt 55.2 mph 10.1 m 33.3 ft

Michigan City IN 54 kt 62.1 mph 21.3 m 70.3 ft

South Haven MI 51 kt 58.7 mph 16.8 m 55.4 ft

Saint Joseph Buoy 40.8 46.9 mph 2.5 m 8.3 ft

Mid Lake South Buoy 44.7 kt 51.4 mph 5 m 16.5 ft

A couple things to keep in mind. First, the higher the anemometer is above the official 10m height, the less the wind will be affected by friction and therefore the greater the speed will be. The height of the anemometer plays a MUCH big role in stable conditions obviously than now when the marine boundary layer is well mixed. Also, it's worth noting, that the mid-lake buoy anemometer height is now lower than how high waves are being reported (19.0 ft), so not only is the wind speed somewhat unrepresentative because the height is half the standard height of an anemometer, but now the waves are so high they are likely blocking the wind somewhat as well.

By the way, here's a cool site where you can see all the ship obs around the lakes:

http://www.glerl.noaa.gov/marobs/php/data.php?sta=3

Notice they are all "hiding" right now in bays and harbors and areas that are more protected from the wind!

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Looking around at some of the major sites this morning, it appears TOL has the lowest pressure reading that I've found thus far.

20 06:52 S 5 4.00 Fog/Mist OVC004 47 46 29.06 984.3

20 05:52 S 5 7.00 Overcast OVC004 47 46 29.05 983.9

20 04:52 S 9 5.00 Fog/Mist OVC004 48 47 29.05 983.7

20 03:52 W 6 10.00 Overcast OVC006 49 48 29.04 983.6

20 02:52 NW 8 8.00 Overcast OVC006 49 47 29.05 983.8

20 01:52 N 14 2.00 Fog/Mist OVC006 48 47 49 48 29.06 984.1

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Pretty boring event here on all fronts, just a lot of light rain with 30 mph winds. My place probably gusted to 40 tops and i'm a few hundred feet from the water. The lack of heavier showers probably prevented some of the better gusts from mixing down. Really makes you appreciate just how insane the winds with the GHD storm were.....sooo much more intense that it's an insult to compare the two.

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Pretty boring event here on all fronts, just a lot of light rain with 30 mph winds. My place probably gusted to 40 tops and i'm a few hundred feet from the water. The lack of heavier showers probably prevented some of the better gusts from mixing down. Really makes you appreciate just how insane the winds with the GHD storm were.....sooo much more intense that it's an insult to compare the two.

Rain with stratus clouds probably would not have helped the winds. MKX said as much in one of their discussions. The onset of a rain squall might, but overall I don't think rain aids winds as much as people discuss. I've heard both sides: that it helps and that it hinders.

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Here are some rainfall totals from Environment Canada. Pretty sharp gradient within the Greater Toronto Area, where the western parts (eg. Pearson Airport/YYZ) got more rain.

AWCN11 CWTO 201403 CCA

Corrected weather summary for all of Southern Ontario and the

National Capital Region issued by Environment Canada

At 10:02 AM EDT Thursday 20 October 2011.

-------------------------------------------------------------

==weather event discussion==

***corrected amount for Hamilton airport***

A low pressure system gave significant rainfall to much of southern

and Southwestern Ontario Wednesday through this morning. Below are

some unofficial storm total rainfall amounts as of 8 AM today.

-------------------------------------------------------------

Location rainfall amount (mm)

Hamilton mountain 78.1

Hamilton airport 68.4

Windsor 55.0

Harrow 54.0

Wiarton 51.8

Waterloo university 51.8

Toronto Pearson 48.4

Waterloo-Wellington 45.6

Barrie 44.0

Elora 43.5

Hanover 39.6

Goderich 35.3

Toronto Island 35.1

Mount Forest 34.7

Markham 31.4

Coldwater 31.0

Toronto downtown 29.9

Toronto Downsview 29.6

This weather summary contains preliminary information

And may not constitute an official or final report.

END/OSPC

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Here are some rainfall totals from Environment Canada. Pretty sharp gradient within the Greater Toronto Area, where the western parts (eg. Pearson Airport/YYZ) got more rain.

AWCN11 CWTO 201403 CCA

Corrected weather summary for all of Southern Ontario and the

National Capital Region issued by Environment Canada

At 10:02 AM EDT Thursday 20 October 2011.

-------------------------------------------------------------

==weather event discussion==

***corrected amount for Hamilton airport***

A low pressure system gave significant rainfall to much of southern

and Southwestern Ontario Wednesday through this morning. Below are

some unofficial storm total rainfall amounts as of 8 AM today.

-------------------------------------------------------------

Location rainfall amount (mm)

Hamilton mountain 78.1

Hamilton airport 68.4

Windsor 55.0

Harrow 54.0

Wiarton 51.8

Waterloo university 51.8

Toronto Pearson 48.4

Waterloo-Wellington 45.6

Barrie 44.0

Elora 43.5

Hanover 39.6

Goderich 35.3

Toronto Island 35.1

Mount Forest 34.7

Markham 31.4

Coldwater 31.0

Toronto downtown 29.9

Toronto Downsview 29.6

This weather summary contains preliminary information

And may not constitute an official or final report.

END/OSPC

I can verify that Pearson number. I had a total of 1.73" (43.8mm) here, assuming we don't get a bit more from the backwash. A modest overperformer. I was with stebo's thinking with the general 1-1.5" number.

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