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Wisconsin Climate Watch
State Bulletin
LATE AUTUMN
REPORT: VARIABILITY WITH A WARM ENDING
Prof. Emeritus John Young, Wisconsin State
Climatology Office Director
Dr. Edward Hopkins, Climatologist
9 November 2009
The persistent
North American jet stream pattern that produced a chilly summer in
Wisconsin became variable in the autumn. It started with a major
shift to a warm September, followed by a cool October, and now is
developing warm ending for November. So, while October felt like
November, the reverse may be true for November.
The very dry
conditions of late summer and September were slightly relieved by
above-normal rains in late September and October. However, the
year-long persistent rainfall deficit in northwestern Wisconsin
continues to sustain a state of moderate
drought there. The
northwest division of the state has been below normal for
several years, and deficits there have been particularly dramatic
during 2009, until October. The
U.S. Drought Monitor may be consulted for maps and animations
for recent years.
Long-range outlooks indicate a
probability of above normal temperatures for much of the remainder
of November. Rainfall for the next weeks to months will tend to be
more normal, probably not enough to provide a definite end to the
northwestern Wisconsin deficit. These
outlooks take into account computer projections of weather patterns,
the tropical cycle called Madden-Julian Oscillation (MJO), the
developing weak El Niño
conditions in the Pacific, and recent climate trends. Details may be
found at the
NOAA Climate Prediction Center site.
ast 24 Hours - Courtesy of NWS
Sullivan
- Southern Wisconsin
- Statewide
Last 7 Days (Statewide Maps) - updated by 10:30am Central Time
Last 30 Days (Statewide Maps) - updated by 10:30am Central Time
Last 90 Days (Statewide Maps) - updated by 10:30am Central Time
Monthly 2009 Statewide Maps -
Courtesy of Midwestern Regional Climate Center
- Precipitation (inches) - and departures from 1971-2000 Normals
- Mean Temperature (F) - and departures from 1971-2000 Normals
- Snowfall (inches) - and departures from 1971-2000 Normals
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Actual | A | A | A | A | A | A |
A | A | A | A |
A |
A |
| Departure | D | D | D | D | D | D |
D | D | D | D |
D |
D |
- See
archive of statewide monthly precipitation, temperature and
snowfall maps for previous years (2001-2008)
Last 12 Months Averages
The data for these products come from the U.S. Cooperative Network, augmented by observations from NWS and FAA sites. These cooperative sites are operated by volunteer observers using approved instruments and observing techniques. Their efforts that provide sufficient data to generate these products are greatly appreciated.
- Statewide Monthly Averages for Last 12 Months
- Divisional Monthly Averages for Last 12 Months
- Temperature (and departure from 1971-2000 normals)
- Precipitation (and departure from 1971-2000 normals)
- Divisional and Statewide Precipitation Data for Wisconsin
updated daily (Courtesy of Oklahoma Climatological Survey)
- See
archive of statewide data for previous years (2001-2008)
Outside Wisconsin
Forecasts & Outlooks
- Short-term Wisconsin predictions - NWS Sullivan
- Long-term National Outlooks (beyond one week) (from Climate Prediction Center)
- County-level agricultural forecasts are available for all Wisconsin Counties courtesy of the University of Kentucky
Agricultural Weather Center
- Local 3-month temperature outlook from National Weather
Service:
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Southeastern and South central (Beloit, Dodgeville, Fond du Lac, Kenosha, Madison, Milwaukee, Montello, Oconomowoc, Port Washington, Wisconsin Dells
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West central, Central, and Southwest Wisconsin (La Crosse, Lancaster 4WSW, Mather 3W, Medford, Viroqua 2S)
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Northeast and East central Wisconsin (Appleton, Green Bay, Laona, Oshkosh, Rhinelander, Shawano, Sturgeon Bay, Two Rivers, Wausau, Wisconsin Rapids)
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West central and Northwest Wisconsin (Eau Claire, Rice Lake)
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Northwest and North central Wisconsin (Danbury, Duluth/Superior, Gurney, Park Falls)
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Upper Peninsula of Michigan
(Ironwood, Iron Mountain, Stephenson, Stambaugh)
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Northern Illinois (Rockford, Marengo)
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Northeast Iowa and Northwest Illinois
(Dubuque, Freeport)
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