Happy Wednesday bloggers,
Rain is still trying to move into the south side late this morning. It will be a struggle today to get the rain north of I-70. Southern Kansas and southern Missouri will likely get way too much rain as the upper low spins up across Oklahoma towards the Arkansas/Missouri border by sometime tonight. I should have used the LRC to pin this storm down, but there were some distractions and good reasons that I made this mistake. It is May, and Gulf of Mexico air was fueling thunderstorms well out ahead of this storm system, but now that the main storm is beginning to form a comma head of rain, the LRC should have been used to forecast the rainfall pattern for later today and tonight. Look below at late January and now, the comparison:

The map on the right is the 18 hour forecast for 1 AM tonight. And, on the left the actual data from January 31st. This is about 98 days apart, and if you have been following this years LRC, then you know we are in roughly a 50 day cycle, which this is just about right on. Feature #1 on each map is the upper low sliding across eastern Oklahoma and into the Missouri/Arkansas line. Feature #2 is the big upper circulation in Canada. Feature #3 is the next wave of energy coming into the Pacific northwest. There is no denying that these features are all related. And, amazingly, we are getting strikingly similar mistakes in the forecast, statements in the blog, and weather on the ground. On January 31st, a foot of snow fell across southern Kansas and spread across southern Missouri. The northern edge of the comma got as close as Warrensburg, Sedalia, and Clinton where heavy snow fell for hours during the afternoon that day. What is happening today? Very heavy rain is developing over southern Kansas and will spread across Missouri. We will be on the northern edge of the comma head, which may yet get up to I-70, or a bit north by tonight. Fascinating! I should have known.
And, what happened next in February? A deep/cold vortex formed over Canada dropping into the central and eastern United States and a big ridge formed over the Pacific northwest. This is exactly what is being forecast by the models and trending in that direction. This is just more strong evidence showing that not only does the LRC exist, but we are still in the same pattern that set up in the fall.
As we move through the day, it will still be interesting to see if the comma head forms a bit farther north, as it is May. We will keep tracking these developments today. And, we are working on our summer forecast which will be on NBC Action News sometime next week.
Have a great day!
Gary