climate factors that affect our weather patterns

here are some factors that influence Kentucky weather they update every day and are quite useful in long range forecasts.

 http://www.cpc.ncep.noaa.gov/products/precip/CWlink/pna/nao.sprd2.gif

http://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/ao.sprd2.gif

http://www.cpc.ncep.noaa.gov/products/precip/CWlink/pna/pna.sprd2.gif

NAO when it’s negative we have a cold stormy pattern when positive we usually have warmer weather.

PNA when it’s positive a trough forms in the east when negative the trough is over the west.

AO when it’s negative colder than normal positive warmer than normal.

sea surface temps in the Pacific ocean

http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/enso_update/sstanim.shtml

blue is colder than normal , red is warmer than normal

colder than normal temps are associated with la-nina while warmer than normal temps are associated with el-nino.

we see different weather patterns with el-nino and la-nina. el-nino generally leads to cooler and dryer than average seasonal conditions while la-nina is warmer and wetter. here some maps to show more detailed seasonal variations.

http://www.cpc.ncep.noaa.gov/products/precip/CWlink/ENSO/enso.anal.shtml

more telconnection links 

epo (negative favors a cold pattern)

http://raleighwx.easternuswx.com/models/00zEPOcomparison.html

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