severe wx

Slide1: 

Severe Weather

Satellite and Doppler radar imagery over Eastern Colorado and Western Kansas on 31 May 1996, 11:30 AM-2:30 PM CST: 

Satellite and Doppler radar imagery over Eastern Colorado and Western Kansas on 31 May 1996, 11:30 AM-2:30 PM CST GOES visible imagery WSR-88D reflectivity imagery

Overshooting tops and cloud top temperature: 

Overshooting tops and cloud top temperature

Different visible enhancements 1 - none, 2 - linear min to max3 - dual stretch min to max using temperature threshold: 

Different visible enhancements 1 - none, 2 - linear min to max 3 - dual stretch min to max using temperature threshold

Comparison of visible enhancementstop - none versus linearbottom - linear versus dual with temperature threshold: 

Comparison of visible enhancements top - none versus linear bottom - linear versus dual with temperature threshold

Different visible enhancements 4a - none, 4b - linear min to max, 4c - dual stretch min to max using temperature threshold : 

Different visible enhancements 4a - none, 4b - linear min to max, 4c - dual stretch min to max using temperature threshold

First one minute interval imagers: 

First one minute interval imagers

One minute interval visible imagery: 

One minute interval visible imagery

Role of Mesoscale Convective System in Jarrell tornadic storm development: 

Role of Mesoscale Convective System in Jarrell tornadic storm development

Genesis of Jarrell tornadic storm system: 

Genesis of Jarrell tornadic storm system

Jarrell tornadic storm system: 

Jarrell tornadic storm system

Jarrell tornadic storm system – GOES instability development: 

Jarrell tornadic storm system – GOES instability development

Near tornado time: 

Near tornado time

GOES & AVHRR anvil structure: 

GOES & AVHRR anvil structure

Vorticity - On the local scale: 

Vorticity - On the local scale Convergence on preexisting vorticity Tilting of vorticity from one plane to another Advection from one place to another Differential heating Friction

Minn. tornado, instability evolution: 

Minn. tornado, instability evolution

Minn. Tornado loops: 

Minn. Tornado loops 1 – Visible imagery ..\..\AVI\severe-stm\mntvis.avi 2 – Visible relative motion ..\..\AVI\severe-stm\mntrel.avi 3 – IR relative motion

Slide30: 

GOES Visible Loop at 1 minute Intervals July 24, 2000 severe weather outbreak across South Dakota and Nebraska produces hail, tornadoes, flash flooding and damaging winds One minute interval visible imagery shows storm evolution over 45 minute period. Circle is 100 nmi in diameter. Instability loop ..\..\AVI\severe-stm\stable.avi

With satellite remote sensing, there are four basic questions that need to be addressed: 

With satellite remote sensing, there are four basic questions that need to be addressed They all deal with resolution: temporal (how often) spatial (what size) spectral (what wavelengths and their width) radiometric (signal-to-noise)

Case Study –5 May 2002: 

Case Study –5 May 2002

250 mb : 

250 mb

Slide34: 

Surface and Stability Loop for 15Z on May 5, 2002 to 02Z on May 6

VISITView Case Study: 

VISITView Case Study

19Z CAPE: 

19Z CAPE

19Z 0-6 km Shear: 

19Z 0-6 km Shear

19Z V. Shear & CAPE: 

19Z V. Shear & CAPE

19Z CAPE & 0-3 km Shear: 

19Z CAPE & 0-3 km Shear

22Z CAPE: 

22Z CAPE

22Z V. Shear & CAPE: 

22Z V. Shear & CAPE

19Z CAPE: 

19Z CAPE

22Z CAPE: 

22Z CAPE

19Z V. Shear & CAPE: 

19Z V. Shear & CAPE

22Z V. Shear & CAPE: 

22Z V. Shear & CAPE