MSU Storm Chase Class

Monday, July 20, 2009

Flash Flood Watch Tonight


Flash flood watch posted for a portion of the Ozarks tonight.

Ted Keller
Senior Meteorologist
KOLR/KSFX-TV
Storm chasing and more at:
Ceaseless Wind

Velocity (Doppler) Example


Pictured is a mesocyclone with a tight circulation as revealed by looking at velocity data. Doppler radar "sees" if detected particles carried by the wind has any compontent along the beam itself. Greens are used for particles moving toward the radar while reds are away.

Therefore, a "couplet" as shown here implies strong cyclonic (counterclockwise) circulation. The radar beam comes in from Wichita from the WSW in this image.

FYI, the green triangle is a a software-driven symbol indicating a possible tornado. This is derived by looking at the entire volume of the storm for rotation. The tightest, most persistent and deepest areas of spin will be tagged in this fashion. This software is used extensively "behind the scenes" at KOLR and KSFX.


Ted Keller
Senior Meteorologist
KOLR/KSFX-TV
Storm chasing and more at:
Ceaseless Wind

Unsummer 2004!

The summer of 2004 was a cool one. Summer is officially defined as June, July and August and the temperatures for all three of those months were below normal that year:

  • June 2004 -1.5
  • July 2004 -4.0
  • August 2004 -5.1

Anytime an average temperature is plus/minus 4.0 or more from the normal it is significant.

In addition, we broke four record lows that summer, three of which were in the forties, very chilly!

Records set in 2004:

  • June 23rd, 49
  • July 27th, 52
  • August 13th, 47
  • August 15th, 49

Heavy Rainfall Possible

The Ozarks finds itself in a flow of winds out of the northwest with imbedded weather systems producing areas of showers and storms. The map above is the Monday-Tuesday forecast of rainfall accumulation forecast by the HPC.


Flash flooding could occur locally but the area slated for the heavy rain is experiencing some of the driest weather over the past 30 days according to the Missouri Climate Center.



The rain should slide in this evening and overnight tonight and last through the first half of Tuesday. Temperatures will remain cool for the season through mid-week.