Good morning NBC Action Weather Bloggers,
Note: You have until Friday to vote for the top 10 Jr. Meteorologists. We will be showing the top 10 on our 5 PM newscasts during May, and announcing the winner later in the month! There is one Jr. meteorologist from Paola, one from Tonganoxie, and quite a few from around Kansas City. So, vote for your favorite one as time is running out. We have had over 4,000 votes thus far!
A FLOOD WATCH will go into effect later today and tonight. The ground is saturated and it won't take much to produce flooding. Look below at the surface map from earlier this morning:

There is a weak warm front, way down to the south over Texas. A very humid air mass, the most humid of this spring season, is moving northward. A series of weak upper level disturbances can be seen on the next map below, the 500 mb flow valid this afternoon:

Each one of these disturbances will be capable of producing thunderstorms. There is really no capping layer above us, so a few thunderstorms could form as early as later this morning with the first disturbance. By Thursday morning, all of the disturbances try to organize into one main upper level storm that is passing by at 7 AM tomorrow. How this organizes, combines with the northward lifting warm front, and is affected by a low level jet developing overnight will decide how much rain we end up receiving.

The rainfall forecast, below, is valid for this afternoon through tomorrow morning. Notice the two higher rainfall amounts forecast, and the one very low amount not that far away. There is no guarantee that you will get more than one inch of rain. But, with the ground so saturated, this is why the National Weather Service has issued a flood watch for the Kansas City metro area and surrounding communities.

We will be tracking these developments on our newscasts today and tonight. We have brand new computers in the NBC Action News Forecast Center, and we will be working hard to put a great weather presentation together for you, so watch and let us know what you think of the graphics.
Have a great day! We will try to blog later today as we gather new data. There is another storm/cold front approaching early Friday, and this could bring another round of thunderstorms. And, another one is due in on Sunday. It is becoming easier for the atmosphere to produce rain, and the higher lower level moisture values, combined with a still strong upper level flow, will continue the threat of above average precipitation through May into June before the jet stream retreats northward by the first day of summer. The wettest month of the year is mid May to mid June. It could really be wet this year, and we will blog about this threat and trend in the coming days.
Gary