Good morning, Washington. Flickr user Pianoman75 spotted this double rainbow when he was leaving his house in Arlington this morning, which seemed a fitting end to such a beautiful and sunny weekend. Of course, it’s all sunshine and rainbows until someone starts threatening rolling taxicab strikes in the District. Yes, today is the first Monday of the planned one-day-a-week taxi strikes, which are set to progress through the next weekday each week (so next week’s will be on Tuesday, the week after that, Wednesday, etc.) until April 6, when time and distance meters have been mandated to be in use inside all D.C. cabs. The rolling strikes are planned to be in place between 7 a.m. and 7 p.m., and while some cab drivers DCist spoke to over the weekend said they planned to participate, we’re not exactly convinced that it will be impossible to hail a cab in the city today — and we’ll need your help to measure how successful the strikes are. Let us know whether you had trouble finding a cab today in the comments.

Area Evacuation Guide Not Sufficient: The Post reports on the failings of a new evacuation guide for the metro region, which was paid for with federal grant money but suffers from a lack of cooperation between regional jurisdictions. D.C., Maryland, Virginia and county officials apparently just couldn’t get it together to agree on a regional evacuation plan that would work for everyone. We guess it’s lucky there’s no major targets for attacks anywhere near here.

CFO Warns of Financial Slowdown in 2009: The Examiner reports on warnings from D.C.’s embattled Chief Financial Officer, Natwar Gandhi, about the District’s financial health in the near future. Gandhi is telling the mayor and the D.C. Council that the housing and credit crises that have thus far not affected the District in the same way as they have the surrounding areas will likely hit the city next year, and is asking them to plan their budgets accordingly. Mayor Fenty’s 2009 spending bill has yet to be finalized or come before the Council, but early reports indicate it will be just under 10 percent higher than 2008’s budget.

Briefly Noted: U.S. Park Police rebuked for weak security at D.C. monuments … Baltimore County teen charged with murdering his family while they slept … Repair work closes Potomac Freeway ramp … A fire engine struck a pedestrian on 14th St. NW Saturday night.

This Day in DCist: In 2005 we came across a rather funny attempt at mocking homophobia through license plates in Virginia, and then wondered why Virginia schools were hosting “ex-gay” speakers in public schools.

Photo by Pianoman75