* Demand soars; Czech bonds seen safe bet among CEE peers
* Investors anticipate tighter local supply to yr-end
* TABLE with auction results [
](Updates with top-up, analyst, CEE context)
By Jason Hovet
PRAGUE, Aug 18 (Reuters) - Investors bid for more than twice the amount on offer at a Czech 15-year bond auction on Wednesday, sending yields to a lifetime low as markets braced for an expected reduction in the supply of longer-dated local debt.
Backed by budget-cutting pledges from a new centre-right government, Czech bond yields have hit fresh lows at the long end of the curve in the past two months and are among the best performers in central Europe.
Demand for the 2024 bond <CZ1002547=>, which the finance ministry debuted in May 2009, rose from the previous auction.
It sold 8.3 billion crowns ($431 million) worth, keeping an extra 2 billion on its books as the bid/cover ratio reached 2.36, up from 1.59 at the last sale in June. The average yield fell to 3.867 percent from 4.582.
"There are two factors that squeezed the market... Plans to move the duration of debt down, and probably the market expects a eurobond auction of a bigger size," a Prague dealer said.
Finance Minister Miroslav Kalousek told Reuters in July he wanted to issue more shorter-dated bonds to cut financing costs.
On Tuesday he said he would make a decision on remaining 2010 bond issues by the end of August and reiterated plans for a eurobond, easing pressure on local issuance. [
]The ministry had delayed an issue of up to 2 billion euros in April, when the Greek debt crisis rattled markets.
"This eurobond issue should be announced pretty soon. Conditions on the market are good... so why wait longer," said Miroslav Plojhar, a JP Morgan economist.
TIME IS NOW
The Czechs have issued 123.1 billion crowns in state bonds this year en route to record borrowing of 280 billion crowns.
The yield on the benchmark 2024 bond has fallen more than 60 basis points on the secondary market since June, and was quoted down 7 basis points on the day at 3.846/762 percent at 1316 GMT.
The spread with equivalent German Bunds <DE113492=>, seen as a safe haven, has narrowed to 124 basis points from 164 basis points in that time, even as German yields hit record lows.
Czech bonds have been the region's top performers in the past few months after the new government laid out fiscal tightening plans that have been welcomed by ratings agencies.
Standard & Poor's raised its outlook for Czech debt to positive on the back of the plans this month.
But with the Czech yields being the lowest in central Europe, analysts say Polish or Hungarian debt looked more attractive in the current flight to bonds by investors worried about a stuttering recovery.
Hungarian bond auctions have been sold out in the past month despite a government standoff with international lenders.
Polish bond yields have dropped 15 basis points since Friday on forecasts of a later interest rate hike than thought before.
(Additional reporting by Jana Mlcochova; Editing by Susan Fenton, John Stonestreet)