August 17, 2005 -- Chase Pictures

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18:47:42 -- 5 miles southeast of Preston, KS (Looking West-northwest)
Contrast-enhanced view of a spin-up underneath a wall-cloud. There were several gustnadoes seen on the periphery of the RFD (or on the RFD gust front), but this one was more intense than any of the gustnadoes, and was located immediately beneath the wall-cloud. Tough call, but given its location and brief intensity, we were at 75%/25% tornado/gustnado probability. Regardless, F0 in the middle of a field that lasted only for about 5seconds is insignificant.

Contrast-enhanced view of a spin-up underneath a wall-cloud. There were several gustnadoes seen on the periphery of the RFD (or on the RFD gust front), but this one was more intense than any of the gustnadoes, and was located immediately beneath the wall-cloud. Tough call, but given its location and brief intensity, we were at 75%/25% tornado/gustnado probability. Regardless, F0 in the middle of a field that lasted only for about 5seconds is insignificant.


File: Picture 032a.jpg
File size: 98KB
Image Serial Number: 114-1460
Camera Model: Canon EOS 20D
Camera serial number: 0720401497
Firmware: Firmware 1.1.0
Owner: Jeff Snyder
Date/Time: 2005:08:17 18:47:42
Shutter speed: 1/500 sec
Aperture: 5
Exposure mode: Av
Flash: Off
Metering mode: Center-weighted average
Drive mode: Single frame shooting
ISO: 100
Lens: 28 to 75mm
Focal length: 75mm
AF mode: One-shot AF
Image size: 1000 x 749
Rotation: none
Image quality: Fine
White balance: Auto
Color space: sRGB
Saturation: High2
Sharpness: High2
Contrast: High2
Picture Effect: Normal
Sharpness level: 0
Tone: Normal
Custom Functions:
CFn 8: ISO expansion: On
User comments:
"Contrast-enhanced view of a spin-up underneath a wall-cloud. There were several gustnadoes seen on the periphery of the RFD (or on the RFD gust front), but this one was more intense than any of the gustnadoes, and was located immediately beneath the wall-cloud. Tough call, but given its location and brief intensity, we were at 75%/25% tornado/gustnado probability. Regardless, F0 in the middle of a field that lasted only for about 5seconds is insignificant."