BRATISLAVA, Oct 17 (Reuters) - Slovak consumer prices posted an unexpected fall in September from August, according to EU-norm data, slashing the annual inflation rate to 4.5 percent, data showed on Tuesday. SLOVAK EU-NORM INFLATION Sept/06 Aug/06 Sept/05 pct change mo/mo -0.2 -0.1 +0.3 pct change yr/yr +4.5 +5.0 +2.3 - Analysts surveyed by Reuters had expected EU-norm inflation to be flat month-on-month, and 4.7 percent year-on-year in September. - Food and non-alcoholic beverages, which have a strong weighting in the consumer price basket, fell by 0.1 percent month-on-month, after a 1.5 percent drop in August. - Housing, water, electricity, gas and other fuels, which pushed inflation up early this year, rose 0.1 percent on month in September, after a 0.1 percent growth in August. - Annual price growth in the housing category, which has the strongest weighting in the consumer basket, was 13.0 percent. - Transport prices fell by 1.9 percent month-on-month, after being flat in August. MARKET REACTION: - The crown showed no immediate reaction to the inflation data. It traded flat from Monday's close at 36.830 to the euro shortly after the inflation data release. BACKGROUND: - The central bank follows inflation calculated by the EU methodology as a part of Slovakia's plan to adopt the euro in 2009. - Financial markets follow local-standards inflation more closely because it is released earlier and shows only minor differences from EU-norm data. Prices under the local methodology fell by 0.3 percent on the month and rose by 4.6 percent year-on-year in September. - The central bank expects annual EU-norm inflation at 3.7 percent in December, above the year-end target of 2.5 percent. - Slovakia wants to meet all criteria for euro adoption in 2008. The central bank predicts inflation will fall to 2.8 percent at the end of 2007. - The central bank raised the key two-week repo rate by 25 basis points to 4.75 percent in September. - Analysts say more policy tightening will be needed this year to knock inflation down enough to meet euro entry criteria. LINKS: - For further details on September inflation and other past data, Reuters 3000 Xtra users can click on the Slovak Statistics Office's website: http://wwww.statistics.sk/webdata/english/index2_a.htm - For LIVE Slovak economic data releases, click on......<ECONSK> - Schedule of upcoming indicator releases............<SK/ECON09> - Summary of short-term economic data forecasts......<SK/ECON04> - Stories on Slovak currency moves........................[SKK/] - Slovak speed money guide ................................<SKK> - Slovak benchmark state bond prices .................<0#SKBMK=> - Slovak forward money market rates ....................<SKKFRA> ((Reporting by Martin Santa, Reuters Messaging: martin.santa.reuters.com@reuters.net; +421 2 5341 8402)) Keywords: ECONOMY SLOVAKIA INFLATION