Vacuum - Edward Vielmetti in Ann Arbor, Michigan 48104

compact weather forecast in RSS?

I'm looking for a weather forecast in RSS which packs as much information into the subject line as possible.

By point of comparison, here are a few examples of things that could be better. The weather underground's feed looks like this:
Current Conditions - 49.8F / 9.9C | Partly Cloudy - 6:50 AM EDT Apr. 23
Today as of Apr. 23 3:45 AM EDT
which is OK for current information (albeit wordy) but useless for the forecast.

I'd like something between
48104: Today: Mostly cloudy through mid morning...then becoming partly sunny. An isolated light shower during the morning...then a chance of showers and thunderstorms through 6 PM. Highs 72 to 76. Light and variable winds...becoming north 5 to 15 mph. Chance of rain 30 percent.
and
48104: Isolated Thunderstorms. High: 76 Low: 46
all to fit in the 140 character Twitter format.

The More It Snows by A.A. Milne

The more it snows ~~
tiddely pom,
The more it goes ~~
tiddely pom,
The more it goes ~~
tiddely pom
On snowing ~~

And nobody knows~~
tiddely pom ,
How cold my toes ~~
tiddely pom,
Are growing.

more snow poetry: Snow Poetry from Inspiring Teachers Publishing; Ralph Waldo Emerson, The Snow-Storm from Poem of the Week; and of course there's lots more.