Wisconsin Weather Update for October 26, 2010.

By: HaleStorm , 12:19 PM GMT on October 26, 2010

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Good Tuesday morning!

Wisconsin Forecast Synopsis
Meteorologists across the Midwest
have been in a tizzy over the last few days over a ridiculously-strong
low pressure system which has developed and is making its way across
Minnesota this morning. Lots of wind and rain can be expected with this
system, and conditions outside will be remarkably similar to what you
might experience in a tropical storm. There was even a Tornado Watch
issued for southern Wisconsin overnight, one of which is still in
effect until 11am in southeastern Wisconsin, and there are also several
other Tornado Watch boxes in effect south of Wisconsin this morning.
The rain should end by this evening with just isolated showers possible
tomorrow, but the tropical storm-force winds will remain through
tomorrow, bringing colder Canadian air into our region. But more
importantly, you can say goodbye to all of those leaves you never got
around to raking!


It could be worse, however. Parts of North Dakota are under a Blizzard Warning tonight!


Important Weather Statement: (Source: National Weather Service)

Fox Cities:

... High Wind Warning remains in effect from 7 am Tuesday to 7 PM CDT Wednesday...

* Two rounds of damaging wind gusts are possible during the

warning period. The first will be during the middle to late

morning Tuesday... and the second will occur during the day


* South to southwest winds gusting as high as 55 to 60 mph are

likely during the first round Tuesday morning. Similar gusts

are expected again during the day Wednesday... but with a more

westerly wind. Winds between those two periods will still be

quite strong... and in the 30 to 40 mph range.

* Winds as strong as forecast can lead to downed trees. Trees

falling on power lines can cause power outages. Driving...

especially high profile vehicles... will be hazardous. Loose

outdoor objects also will be blown around by these strong


Precautionary/preparedness actions...

A High Wind Warning means a hazardous high wind event is expected

or occurring. Sustained wind speeds of at least 40 mph or gusts

near 60 mph or more can lead to property damage. Tree branches

and power lines can come down in winds these strong. High profile

vehicles will be difficult to drive in these conditions.


Southern Wisconsin:
Tornado Watch 720 in effect until 11 am CDT this morning...

... High Wind Warning remains in effect until 7 PM CDT Wednesday...

* Timing... gusty south winds early this morning will switch to the

southwest and become strong mid to late morning. A lull in the

winds is expected tonight... before the winds become strong and

westerly on Wednesday.

* Winds... south winds will increase to 20 to 30 mph late

tonight... and turn to the southwest at 25 to 40 mph by late

morning. Gusts of 50 to 60 mph are expected. A lull in the wind

speeds are expected tonight... with west winds of 25 to 40 mph

on Wednesday. Gusts of 50 to 60 mph are expected once again on


* Impacts... wind speeds at this level will blow down tree

branches and possibly smaller and weaker trees. Power lines

could be brought down by the strong winds or by the falling

trees and tree branches. Outdoor furniture... trash cans and

other loose objects will be blown around. Damage may occur to

outdoor displays. High profile vehicles will be buffeted by

the strong winds... especially on north to south roads.

Precautionary/preparedness actions...

A High Wind Warning means a hazardous high wind event is expected

or occurring. Sustained wind speeds of at least 40 mph or gusts

of 58 mph or more can lead to property damage.


Today’s Forecast Grade: F

Wisconsin Forecast:

Today: Cloudy, windy and wet. Showers and thunderstorms likely
with tropical storm-force winds at times during the day. Hold onto your
hats... and everything else for that matter.  Morning high temperature
of around 63 with temps falling through the 50s during the day. Chance
of rain, as you may have guessed, is 100%.

Raw Model Data: (combined numerical output range from three different NOAA
weather models)

Appleton: Highs 57-62. Chance of precip 88-100%.

Madison: Highs 57-58. Chance of precip 72-86%.

Waukesha: Highs 57-64. Chance of precip 78-84%.


Tonight: Maybe a lingering shower, otherwise cloudy and windy overnight. Lows near 40. Chance of rain 20%.

Wednesday: Cloudy, windy and colder with a rain shower possible.
Tropical storm-force winds again possible during the day. Highs in the
upper 40s east-central, near or just above 50 south. Chance of rain 40%.

Thursday: Morning clouds and winds, but both will be decreasing
late in the day. Temperatures will be lacking as well with highs only
in the low to mid- 40s expected.

This Weekend’s Outlook:

Conditions: Looks to be a partly cloudy and calm weekend with near or slightly below-normal temperatures.

High Temperatures: Probably around the upper 40s to lower 50s east-central, and low to mid- 50s south. Give or take a few degrees, of course.

Other City Forecasts:

(Today and Tomorrow)

Minneapolis/St. Paul, Minnesota:

High Wind Warning in effect from 7 am this morning to 7 PM CDT Wednesday...
Conditions: Windy. Rain today changing to a rain/snow mix tonight and tomorrow. No snow accumulation expected.

High Temperatures: Lower 50s today, only near 40 tomorrow.



Anna, Illinois: 

Wind Advisory in effect until 3 PM CDT this afternoon...
Tornado Watch 721 in effect until noon CDT today...
Conditions: Thunderstorms and windy today. Sunny tomorrow.

High Temperatures: Upper 60s today, mid- 70s tomorrow.



League City and Pearland, Texas:

Conditions: Partly cloudy; breezy today.

High Temperatures: Upper 80s.





Hilton Head Island, South Carolina:

Conditions: Mostly cloudy. Isolated storms tonight and tomorrow.

High Temperatures: Lower 80s.



Charlotte, North Carolina:

Conditions: Isolated storms today with a better chance of rain tonight and tomorrow.

High Temperatures: Lower 80s.



Las Vegas, Nevada:

Conditions: Mostly sunny.

High Temperatures: Just above 70.



Davenport, Florida:

Conditions: Partly cloudy.

High Temperatures: Near 90.



Weather in the News:

Richard weakens to a tropical depression

At least 27 dead, 15 missing in Myanmar in wake of cyclone


Damaging Winds Expected Tuesday and Wednesday

An intense storm system that will be capable of producing damaging
winds across much of Wisconsin will begin to affect the area Tuesday
morning.  Wind gusts over 50 mph are likely across parts of central and
eastern Wisconsin by mid or late Tuesday morning.   In addition to the
general high wind threat Tuesday morning, thunderstorms and showers
ahead of the main system could produce even locally higher gusts.

Winds will decrease a bit Tuesday night before a second round of high
winds develops Wednesday.  The high winds on Tuesday and Wednesday
could easily knock down trees and powerlines.  Make sure you secure
outdoor objects so that they do not blow around.

This storm storm system has some similarities to the November 1998
windstorm that caused considerable damage across central and southern
Wisconsin from 50 to 70+ mph winds.


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About HaleStorm

Atmospheric and Oceanic Sciences degree from UW-Madison: 1998. Former broadcast Meteorologist for NewsRadio 1310 WIBA in Madison. NWS Storm Spotter.

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Appleton, WI
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Humidity: 43%
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