Posted on 10/25/2010 5:05:09 PM PDT by FromLori
The National Weather Service has upgraded the high wind watch to a high wind warning which runs from 7 a.m. Tuesday-7 p.m. Wednesday. It appears we could establish a new record for the lowest October barometric pressure in this storm. Models put Chicago's barometric pressure at 29.05" Tuesday morning. If true, this would break the old October record low of 29.11" set Oct. 19, 1937, Oct. 19, 1947 and Oct. 24, 1959.
The storm's minimum central pressure of 960 millibars (28.35") Tuesday in northern Minnesota is below the 980-millibar reading in the Edmund Fitzgerald storm on Lake Superior in Nov. 1975. It's the equivalent of a Category 3 hurricane.
The curl visible off the West Coast on this CIMSS UW-Madison satellite time lapse in riding an extraordinary 220 mph speed maximum in the jet stream will become the storm expected to explode as it rides across the Dakotas and Minnesota Tuesday.
Wind gusts could reach mid-60s
Frank Wachowski of the National Weather Service reports Chicago's strongest October wind was 70 mph recorded Oct 28, 1892. Model wind profiles put sustained winds 2,000 feet above local terrain here at 63 mph by Tuesday afternoon. Subsidence in the region of the storm under which Chicago will be positioned after the passage of a squall line early in the day (6-9 a.m.) threatens to bring these winds down to the surface as damaging non-thunderstorm wind gusts.
Check out this animation of the spin-up of Tuesday's mega-low in the nation's mid-section. This is a time-lapse of the National Weather Service's high resolution GFS model. It puts the storm's minimum pressure at 957.5 millibars which translates to 28.28".
So that means no one will be smelting tomorrow night...
;o)
They usually feather and/or brake but certainly not freewheel.
Our weatherman here said this storm was literally sucking winds up from the gulf.
I’m expecting more than one phone call from Mom tomorrow.....
I believe you are correct. Freewheeling in 60+ mph winds would probably be a disaster. I'd want to see pictures, of course.
What the NWS in Northern Indiana is saying-—
...ELEVATED SEVERE WEATHER THREAT ON TUESDAY...
A NEAR HISTORICALLY DEEP LOW PRESSURE SYSTEM WILL PUSH INTO THE UPPER MIDWEST ON TUESDAY SUPPORTING A LINE OF THUNDERSTORMS INTO THE REGION.
THIS LINE OF THUNDERSTORMS WILL HAVE AN INCREASED POTENTIAL TO PRODUCE WIDESPREAD DAMAGING WINDS...WITH WIND SPEEDS IN EXCESS OF 70 MPH POSSIBLE.
FAVORABLE ATMOSPHERIC PROFILES WILL ALSO SUPPORT AN INCREASED TORNADO THREAT.
THE LINE OF THUNDERSTORMS IS EXPECTED INTO WESTERN INDIANA AROUND MID MORNING...AND WILL MOVE VERY QUICKLY TO THE EAST AT SPEEDS OF 60 TO 70 MPH...ENTERING OHIO BY EARLY AFTERNOON.
PERSONS ARE ADVISED TO STAY ALERT TO WEATHER CONDITIONS ON TUESDAY...AND BE PREPARED FOR ANY SEVERE WEATHER WATCHES OR WARNINGS.
Let’s all meet up here tomorrow and trade war stories.....
Before they put fences around some near here I once stood directly under the path of the blades coming around in a 25 or 30 knot wind. Quite impressive, although I would never be stupid enough to do that again. Blade tips would have been moving around 150 mph. If any ice has formed on the blades you are nearly certain to get hit by a 150 mph ice clod. It was warm when I did that, but get the shudders when I think about it.
It certainly is. Strange to have vicious winds out of nowhere blow things down, then stop, only to start up 30 minutes or so later and knock something else down.
“At least I won’t have to rake the leaves.”
Yea,but Wednesday you get to rake the neighbor’s leaves in your yard.
The advantage of living on a lake is that the lake collects leaves coming from that direction.
I wouldn’t want to ride out 21 ft waves in anything on Superior!
Deal! Get plenty of beer on ice!
The weather system is coming right at Ohio too.I wonder how bad Lake Erie will get,it’s shallow and really goes nuts in a storm.
They were talking about 15-17 foot waves on the big lake yesterday. Forecast now calls for sustained winds of about 30 MPH with stronger gusts but if the waves are even half that high it will really be something to see.
The only consolation for me is that it is occurring in Minnesota and Wisconsin, and not in Ohio. :)
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