Kevin's 2008-2009 Winter Forecast
By
Chief Meteorologist Kevin Lighty
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December 2008Avg. Temperature: 23° (7° below avg.)Precipitation: 0.5" (1" below avg.) Dec. 1-4: Rain to snow, then sunny, cold Dec. 5-9: Snow, then sunny, record cold Dec. 10-16: Snow, then sunny, record cold Dec. 17-19: Sunny, mild Dec. 20-23: Flurries, cold Dec. 24-31: Sunny, mild |
January 2009Avg. Temperature: 33° (7° above avg.)Precipitation: 1" (avg.) Jan. 1-6: Snow, cold Jan. 7-15: Sunny, turning warm Jan. 16-21: Rain to snow, then sunny, cold Jan. 22-28: Rain, then sunny, mild Jan. 29-31: Rain and snow showers, turning colder |
Now moving on to the My Forecast.
First thing is first, when making seasonal forecasts a good indicator of long range weather patterns is checking out ocean sea surface temperatures in the Pacific. This is where the terms La Nina and El Nino get brought up every few years. Last year we were in a La Nina, a few years back an El Nino. Well this year we are in what is called a neutral pattern, which is neither La Nina or El Nino. This makes it particularly difficult because that means the winter can be variable over the course of the season and there is no one distinct feature dominating the weather pattern to be the telling sign of what to expect. Instead wild swings in temperature and precipi
Here is a look at ENSO numbers over last 60 years.
Here are just those ENSO neutral autumns that saw near neutral/weak La Niña conditions through winter: 2001, 1996, 1981, 1980, 1960 
Next is a look at teleconnection patterns.
The term "teleconnection pattern" refers to a recurring and persistent, large-scale pattern of pressure and circulation anomalies that spans vast geographical areas. Teleconnection patterns are also referred to as preferred modes of low-frequency (or long time scale) variability. Teleconnection patterns reflect large-scale changes in the atmospheric wave and jet stream patterns, and influence temperature, rainfall, storm tracks, and jet stream location/ intensity over vast areas.
Some of these different patterns are referred to as the NAO AO and PNA. The NAO is the north Atlantic oscillation which as of lately has been negative and looks to stay negative for several more weeks which corresponds to very cold air for the Great Lakes and Midwest.
Previous years NAO

Recently and 14 day forecast of NAO
Now I won't continue to bore you with the other indicies but I will mention that many are trending toward a very cold December.
Other things like arctic sea ice is of interest as more of a snow and ice pack means colder air to come rushing down from the north.
Next the solar cycle and currently we are in a period of very low solar activity and hardly any sun spots at all as we are in the part of the 11 year cycle where not much is happening.
Here is a look at the likely storm tracks for the upcoming winter season. Now not every track will be like this but more times than not we will see the jet stream positon setup as so especially early on in the winter season. This track is conducive for above average precip. for our region.

So my breakdown for the upcoming Winter will be below average temperatures for our region and even colder temperatures in the upper great lakes region where temps will stay very cold. December looks to be well below normal for us with some slight moderations as we head into January where we could see a mid-winter thaw sometime late in the month. February will remind us that we are still in winter and another cold period will play out through the middle of the month. March continues to hang out with the cooler than normal readings before we head into another active severe weather season.

With looking at precipitation I feel we will continue to see above average amounts through our region and through parts of the Midwest. With current storm tracks and with what looks to be an open Gulf storm systems will continue to plauge our area with many clipper like systems moving through and then a few big storms including some ice storms which I feel are likely late Dec. into January. I also think that a white christmas is not out of the question at all.

Here is just a little side note info for you to ponder on.
*Least Snowiest Seasons Report - Springfield, MO*
2005-2006 1.7
1931-1932 2.8
1922-1923 4.4
1935-1936 4.6
1991-1992 4.7
1949-1950 4.8
1982-1983 5.6
1971-1972 6.1
1910-1911 6.1
2004-2005 6.3
*Snowiest Seasons Report - Springfield, MO*
1911-1912 54.5
1969-1970 43.6
1917-1918 39.3
2002-2003 38.6
1959-1960 33.6
1918-1919 33.2
1974-1975 32.9
1939-1940 32.1
1983-1984 31.6
1913-1914 30.0
Finally here are some dates to remember over the upcoming Winter.
Dec. 12: Full Cold Moon, also the Geminid Meteor Shower-all night. The Full Moon will obscure some of the dimmer meteor. Dec. 18-19 The Moon and Saturn appear close together. Dec 21.: Solstice Dec. 22: Moon reaches its Southernmost declination. Dec. 27: New Moon Jan. 4: Quandrandids Meteor shower (very light), Earth's closest point to the Sun. Jan. 10: Full Wolf Moon. Moon also at perigee (Closest to Earth) Feb. 2: The groundhog will see his shadow Feb. 9: Full Snow Moon Feb. 27: Venus at its brightest and appears very close to the Moon March 8: Daylight Saving Time begins, Saturn at opposition March 10: Full Worm Moon March 20: First Day of Spring-Vernal Equinox
Well there you have it. Below average temps, Above averge precipitation.
December: Much colder than average, with a series of storms through the end of the month. Ice storm possible mid to late december.
January: Starts out colder than normal but an early January thaw with warmer than average temperatures but that won't last long. Again some shots of decent ice/snow events during mid parts of this month.
February: Back down to our cooler than average temperatures and staying active with a continuing trend of above average precip.
March: Winter holding onto the grips of the Ozarks but springtime air trying to battle back in to start our severe weather season out early this year.
Feel free to make your own predictions and comment below on your thoughts and opinions. Again thanks for coming by to check out the KSPR weather blog, I am glad to be a part of this growing community of such loyal weather fans and KSPR viewers and readers. Don't forgot to join us throughout the winter in the KSPR weather chatroom and check out the 24/7 On Demand weather LIVE stream constantly on for your convenience. Have a great Winter!!!!
Chief Meteorologist Kevin Lighty
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