The Oklahoma Cold Front of November 10, 1995
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1. Describe the weather conditions across Oklahoma at noon on November 10, 1995.   
Air Temperature     Dew Point   Rainfall   Solar Radiation   Answer

2. Look at the Norman soundings at 6:00 a.m. and 6:00 p.m. What happens at the surface between 6:00 a.m. and 6:00 p.m.?   OUN 6 AM   OUN 6 PM   Answer

3. Look at the radar base reflectivity images between 3:45 (2145 UTC) and 4:30 p.m (2230 UTC). Classify the echoes as convective, stratiform, and non-precipitating.   
Radar Loop   Answer

4. Match the echoes described in question 3 to Mesonet temperature, dew point, and solar radiation plots at 4:30 p.m.   
Air Temperature     Dew Point   Solar Radiation   Answer

5. Examine the reflectivity feature that moves from Grady, McClain, and Cleveland counties at 4:00 p.m. to Pontotoc and Murray counties at 5:30 p.m. What happens to this feature? Does it strengthen, weaken, dissipate, or does something else happen to it?   

Radar Image  4:00 p.m.   5:30 p.m.   Answer

6. Look at the radar echoes between 6:00 and 6:30 p.m., the Dodge City sounding at 6:00 p.m., and Mesonet data between 6:00 and 6:30 p.m. What type of precipitation do you think is falling in the following groups of counties:

  • Oklahoma and Cleveland?
  • Blaine, Kingfisher, Southern Garfield?
  • Kay, Grant, and Northern Garfield?

    Is there a difference in the appearence and texture of the radar echoes in these groups of counties?

    Radar Images  6:00 p.m.   6:07 p.m.   6:13 p.m.   6:19 p.m.   6:24 p.m.   6:30 p.m.
    Dodge City Soundings   6 PM
    Mesonet Data   6:00 - 6:30 p.m.

  • 7. Look at the radar echoes at 9:30 p.m. (0332 UTC) What type of precipitation is falling in the Oklahoma City and Tulsa areas? Compare the precipitation that is likely falling in Lincoln county with the precipitation that is falling in Pittsburg and Atoka counties.   
    Radar Image   Answer

    8. What happens to the Norman sounding between 6:00 p.m. on November 10, and 6:00 a.m. on November 11? What about Fort Worth?
      OUN 6 PM   OUN 6 AM
      FWD 6 PM   FWD 6 AM   Answer

    9. Look at the Mesonet temperature plots between 3:00 p.m. and 10:45 p.m. Describe a change in shape of the isotherms. What do you think might be responsible for this change? Hint: Looking at a particular isotherm, like 32°F, might be helpful.   

    Air Temperature 3:30 p.m.   5:45 p.m.   10:45 p.m.   Answer

    Additional Mesonet Loops

      Air Temperature     Dew Point
      Rainfall                   Solar Radiation
      Wind Gusts             Station Plot

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