Mortgage markets worsened last week as the U.S. economy showed additional signs of strength; and global demand for mortgage bonds slipped.

Conforming mortgage rates rose in California and around the country for the fifth straight week. It’s a streak that’s been marked by volatile pricing that’s rendered rate shopping difficult.

Last week, lenders published as many as 5 rate sheets per day where, by comparison, over the past 12 months, lenders have averaged closer to 2 rate sheets per day.

This week, with a bevy of data set for release and a Federal Open Market Committee meeting, expect volatility to remain high. Wall Street remains undecided on the future of the U.S. economy and there will be plenty on information on which to trade:

• Tuesday : Producer Price Index, Retail Sales
• Wednesday : Consumer Price Index, Housing Market Index
• Thursday : Housing Starts, Initial and Continuing Jobless Claims

Despite the high impact of this week’s economic releases, though, it will be Tuesday’s FOMC meeting that sets the tone for the mortgage bond market and, consequently, for mortgage rates in Orange County.

The Fed’s last meeting in early-November provided the spark to the recent rise in mortgage rates. In the group’s post-meeting press release, it acknowledged growth while committing $600 billion to bond markets. The move triggered a massive bond sell-off that has since pushed conforming mortgage rates to a 5-month high.

The Fed adjourns at 2:15 PM ET Tuesday afternoon.

If you’re still floating a mortgage rate or have otherwise yet to lock, consider executing a rate lock agreement early in the week. Once the Federal Open Market Committee adjourns, mortgage rates could spike again. And, although rates are up since November, they remain historically low.

Mortgage markets improved last week on weaker-than-expected jobless figures, ongoing troubles in Europe, and a tame reading on domestic inflation.

As a result, conforming mortgage rates for California fell last week, drawing loads of new refinance applications.

For a brief moment Thursday afternoon, mortgage bond prices pierced a key support level, dropping rates in Orange County to their best levels of the year. 

It didn’t last long, however. By Friday morning, pricing was worsening on profit-taking and in preparation for this week — a week that promises to be heavy on both data and rhetoric.

To mortgage markets, this can be a dangerous combination.

The biggest news of the week is the Federal Reserve’s 2-day meeting, scheduled for Tuesday and Wednesday in Washington D.C. 

The Fed is expected to hold the Fed Funds Rate in its target range near 0.000-0.250 percent. It won’t be what the Fed does at its meeting that will matter to rates, though. It will be what the Fed says — about jobs, about growth, about inflation — in its post-meeting press release.

Remarks that reflect well upon the economy should lead mortgage rates higher. Remarks viewed as negative should lead mortgage rates down.

There’s key data due for release next week, too:

• Tuesday : Existing Home Sales and Home Price Index
• Wednesday : New Home Sales
• Thursday : Continuing Jobless Claims
• Friday : GDP and Consumer Sentiment

Mortgage rates remained relatively tame last week.  This week, volatility should return.

If you’re shopping for a mortgage, rates remain very low but could reverse quickly. Your biggest risk is tied to the Fed’s adjournment Wednesday afternoon.